Fix race condition in display refresh locking

Serial uploader searches for games by filename (e.g., "tetris") but
games are registered by their metadata NAME field (e.g., "Tetris").
This caused launch failures when case didn't match.

Changed select_game_by_name() to use case-insensitive matching:
- strcasecmp() for exact match
- tolower() both strings before strstr() for partial match

Now uploading "tetris.lua" will successfully match and launch "Tetris".

Co-Authored-By: Claude <noreply@anthropic.com>

.claude/skills/sd_card_best_practices.md

@@ -0,0 +1,484 @@
+# SD Card Best Practices for RP2350 + FatFS
+
+This document captures critical best practices for working with SD card operations in this project, based on lessons learned during development.
+
+## 1. SPI Bus Contention (CRITICAL)
+
+### ⚠️ CRITICAL: Display and SD Card Share the Same SPI Bus
+
+**The display and SD card use the same SPI bus and CANNOT be accessed simultaneously.** Attempting to do so will cause the Pico to crash or behave unpredictably.
+
+### Real-World Example: Game Launch Crash
+
+The serial uploader originally crashed when launching games because:
+
+1. `SerialUploader::launch_game()` writes file to SD (SPI)
+2. Immediately calls `select_game_by_name()`
+3. `LuaGame::load_script()` reads from SD (SPI)
+4. **Meanwhile**, Core 1 is refreshing the display (also SPI)
+5. **CRASH** due to simultaneous SPI access
+
+### Solution: Wait for Display to Be Idle
+
+Before any SD card operation that isn't already protected, ensure no display refresh is in progress:
+
+```cpp
+// In main loop:
+if (serial_uploader.wants_to_launch_game() && !is_refresh_in_progress()) {
+    // Safe to launch now - no SPI conflict with display
+    bool game_launched = serial_uploader.complete_launch();
+    // ...
+}
+```
+
+### Key Patterns for Avoiding Contention
+
+**Pattern 1: Check `is_refresh_in_progress()` before SD operations**
+```cpp
+if (!is_refresh_in_progress()) {
+    uint prev_speed = sd_card_set_spi_speed();
+    // SD card operations
+    sd_card_restore_spi_speed(prev_speed);
+}
+```
+
+**Pattern 2: Split operations into "prepare" and "execute" phases**
+```cpp
+// Phase 1: Prepare (safe, no SD access)
+void prepare_operation() {
+    state = READY_TO_EXECUTE;
+}
+
+// Phase 2: Execute (only when !is_refresh_in_progress())
+bool execute_operation() {
+    uint prev_speed = sd_card_set_spi_speed();
+    // SD card operations here
+    sd_card_restore_spi_speed(prev_speed);
+}
+```
+
+**Pattern 3: Keep main loop responsive**
+```cpp
+while (1) {
+    // Check if we need to do SD operation
+    if (needs_sd_operation && !is_refresh_in_progress()) {
+        perform_sd_operation();
+    }
+
+    // Don't sleep if waiting for SD operation window
+    bool stay_awake = pending_refresh || needs_sd_operation;
+    if (!stay_awake) {
+        __wfi();  // Sleep until interrupt
+    }
+}
+```
+
+### When This Matters Most
+
+- **Game loading**: Reading Lua scripts from SD during game launch
+- **Serial uploads**: Writing files and immediately loading them
+- **Save/load operations**: Writing game state to SD
+- **Directory scanning**: Re-scanning games while display is active
+
+### The Core Architecture
+
+This project uses **dual-core display refresh**:
+- **Core 0**: Main logic, input processing, game updates, SD card operations
+- **Core 1**: Display refresh (writes framebuffer to display via SPI)
+
+Core 1 runs asynchronously, so you must explicitly check `is_refresh_in_progress()` before SD operations.
+
+## 2. SPI Speed Management
+
+### Critical Rule: Always Set SD Card Speed Before Operations
+
+The display and SD card share the same SPI bus but operate at different speeds:
+- **Display**: 32 MHz (fast)
+- **SD Card**: 12.5 MHz (slower, more reliable)
+
+**ALWAYS wrap SD card operations with speed switching:**
+
+```cpp
+// Save current speed and switch to SD card speed
+uint prev_speed = sd_card_set_spi_speed();
+
+// ... SD card operations here ...
+// f_open(), f_write(), f_read(), f_readdir(), etc.
+
+// Restore previous speed for display
+sd_card_restore_spi_speed(prev_speed);
+```
+
+### Why This Matters
+
+Running SD card operations at the wrong SPI speed causes:
+- Unreliable reads/writes
+- Corrupted data
+- `FR_DISK_ERR` errors from FatFS
+- Hardware-level protocol failures (0xFF data responses)
+
+### Where Speed Switching is Already Handled
+
+These functions handle SPI speed internally (you don't need to wrap them):
+- `LuaGameLoader::register_all_games()`
+- All functions in `sd_card.c` (low-level operations)
+
+### Where You MUST Handle Speed Switching
+
+Any code that calls FatFS functions directly:
+- `f_open()`, `f_close()`
+- `f_read()`, `f_write()`
+- `f_opendir()`, `f_readdir()`, `f_closedir()`
+- `f_stat()`, `f_mkdir()`, `f_unlink()`
+- `f_getfree()`, `f_sync()`
+
+## 2. SD Card Write Protocol
+
+### The Data Response Polling Issue
+
+When writing to SD card with `CMD24` (write single block), the data response token may not arrive immediately. You must poll for it:
+
+```cpp
+// After sending data block and CRC:
+uint8_t response = 0xFF;
+for (int i = 0; i < 10; i++) {
+    response = sd_card_transfer(0xFF);
+    if (response != 0xFF) {
+        break;  // Got the response
+    }
+}
+
+// Check if data was accepted
+if ((response & 0x1F) != SD_DATA_ACCEPTED) {
+    // Write failed
+}
+```
+
+**Why:** The SD card may need a few clock cycles before sending the data response token. Reading only once may return 0xFF (no response yet).
+
+### Wait for Card Ready After CMD24
+
+After sending the write command and before sending data:
+
+```cpp
+// After CMD24 command:
+uint8_t ready_byte;
+do {
+    ready_byte = sd_card_transfer(0xFF);
+    timeout_count++;
+    if (timeout_count > 1000) {
+        return false;  // Timeout
+    }
+} while (ready_byte != 0xFF);
+```
+
+This ensures the card is ready to receive the data block.
+
+## 3. FatFS Best Practices
+
+### Always Check Return Codes
+
+```cpp
+FRESULT fr = f_open(&fil, path, FA_CREATE_ALWAYS | FA_WRITE);
+if (fr != FR_OK) {
+    printf("ERROR: f_open failed: %d\n", fr);
+    // Clean up and return
+    return false;
+}
+```
+
+Common FatFS error codes:
+- `FR_OK (0)`: Success
+- `FR_DISK_ERR (1)`: Low-level disk error (often SPI speed issue)
+- `FR_NOT_READY (3)`: Card not initialized
+- `FR_NO_FILE (4)`: File not found
+- `FR_NO_PATH (5)`: Path not found
+- `FR_EXIST (8)`: File/directory already exists
+
+### Use FA_CREATE_ALWAYS to Overwrite
+
+For rapid iteration (like our serial uploader):
+
+```cpp
+f_open(&fil, path, FA_CREATE_ALWAYS | FA_WRITE);
+```
+
+This overwrites existing files, perfect for development.
+
+### Write in Chunks for Large Files
+
+For files larger than 512 bytes, write in chunks:
+
+```cpp
+const uint32_t CHUNK_SIZE = 512;
+uint32_t total_written = 0;
+
+while (total_written < total_size) {
+    uint32_t chunk_size = min(CHUNK_SIZE, total_size - total_written);
+    UINT bytes_written;
+
+    fr = f_write(&fil, buffer + total_written, chunk_size, &bytes_written);
+    if (fr != FR_OK || bytes_written != chunk_size) {
+        // Handle error
+        break;
+    }
+
+    total_written += bytes_written;
+}
+```
+
+### Always Sync and Close
+
+```cpp
+f_sync(&fil);  // Ensure data is written to card
+f_close(&fil); // Close file and update directory
+```
+
+Skipping `f_sync()` can lead to data loss if power is lost.
+
+## 4. Memory Management
+
+### Clean Up After Re-scanning
+
+When re-scanning games (like after upload), clean up old data:
+
+```cpp
+// Clear game launcher entries
+game_launcher->clear_games();
+
+// Clear Lua game factory data
+LuaGameLoader::clear_factory_data();
+
+// Re-scan
+LuaGameLoader::register_all_games(game_launcher);
+```
+
+**Why:** Without cleanup, you get duplicate registrations and memory leaks.
+
+### Delete Old Game Instances Before Creating New Ones
+
+```cpp
+if (selected_game) {
+    delete selected_game;
+    selected_game = nullptr;
+}
+
+// Now create new game
+selected_game = factory(width, height, renderer, gui, input_manager);
+```
+
+**Critical for Lua games:** Each LuaGame has a Lua state. Not cleaning up the old one before creating a new one causes conflicts and freezes.
+
+## 5. Debugging Tips
+
+### Add Targeted Debug Output
+
+When debugging SD operations, add prints at key points:
+
+```cpp
+printf("✓ Wrote %u bytes to %s\n", bytes_written, filepath);
+```
+
+But avoid spamming the console - it slows down operations significantly.
+
+### Check Hardware Layer First
+
+If FatFS returns `FR_DISK_ERR`, the issue is usually at the hardware level:
+1. Check SPI speed (most common issue)
+2. Check SD card write protection
+3. Check physical SD card connection
+4. Verify SD card is properly initialized
+
+### Use Root Directory for Testing
+
+When debugging writes, test with root directory first:
+
+```cpp
+FIL test_file;
+if (f_open(&test_file, "/test.txt", FA_CREATE_ALWAYS | FA_WRITE) == FR_OK) {
+    printf("Root write OK\n");
+    f_close(&test_file);
+    f_unlink("/test.txt");
+}
+```
+
+This isolates directory-related issues.
+
+## 6. Common Pitfalls
+
+### ❌ DON'T: Access SD Card During Display Refresh (MOST CRITICAL)
+
+```cpp
+// BAD - Will crash the Pico!
+void launch_game() {
+    scan_games();  // Reads SD card
+    selected_game = create_game();  // Reads Lua script from SD
+}
+// Called directly without checking if display is refreshing
+```
+
+### ✅ DO: Wait for Display to Be Idle
+
+```cpp
+// GOOD - Wait for safe window
+if (!is_refresh_in_progress()) {
+    uint prev_speed = sd_card_set_spi_speed();
+    scan_games();
+    selected_game = create_game();
+    sd_card_restore_spi_speed(prev_speed);
+}
+```
+
+### ❌ DON'T: Forget SPI Speed Management
+
+```cpp
+// BAD - Will fail or be unreliable
+f_open(&fil, "/games/test.lua", FA_WRITE);
+```
+
+### ✅ DO: Always Switch Speeds
+
+```cpp
+// GOOD
+uint prev_speed = sd_card_set_spi_speed();
+f_open(&fil, "/games/test.lua", FA_WRITE);
+// ... operations ...
+sd_card_restore_spi_speed(prev_speed);
+```
+
+### ❌ DON'T: Assume Immediate Data Response
+
+```cpp
+// BAD - May get 0xFF (no response yet)
+uint8_t response = sd_card_transfer(0xFF);
+if (response != 0x05) {
+    // Might incorrectly fail
+}
+```
+
+### ✅ DO: Poll for Data Response
+
+```cpp
+// GOOD - Poll until response arrives
+uint8_t response = 0xFF;
+for (int i = 0; i < 10; i++) {
+    response = sd_card_transfer(0xFF);
+    if (response != 0xFF) break;
+}
+```
+
+### ❌ DON'T: Skip Error Checking
+
+```cpp
+// BAD
+f_write(&fil, buffer, size, &bytes_written);
+f_close(&fil);
+```
+
+### ✅ DO: Check Every Return Value
+
+```cpp
+// GOOD
+if (f_write(&fil, buffer, size, &bytes_written) != FR_OK) {
+    printf("Write failed\n");
+    f_close(&fil);
+    return false;
+}
+```
+
+### ❌ DON'T: Create New Games Without Cleanup
+
+```cpp
+// BAD - Memory leak and Lua state conflicts
+selected_game = new LuaGame(...);
+```
+
+### ✅ DO: Clean Up First
+
+```cpp
+// GOOD
+if (selected_game) {
+    delete selected_game;
+    selected_game = nullptr;
+}
+selected_game = new LuaGame(...);
+```
+
+## 7. Serial Upload Pattern
+
+The serial uploader demonstrates the complete pattern:
+
+```cpp
+bool SerialUploader::write_file_to_sd() {
+    // 1. Validate input
+    if (!file_buffer || bytes_received == 0) return false;
+
+    // 2. Set SD card SPI speed
+    uint prev_speed = sd_card_set_spi_speed();
+
+    // 3. Ensure directory exists
+    f_mkdir("/games");
+
+    // 4. Open file (overwrite mode for iteration)
+    FIL fil;
+    FRESULT fr = f_open(&fil, filepath, FA_CREATE_ALWAYS | FA_WRITE);
+    if (fr != FR_OK) {
+        sd_card_restore_spi_speed(prev_speed);
+        return false;
+    }
+
+    // 5. Write in chunks
+    const uint32_t CHUNK_SIZE = 512;
+    uint32_t total_written = 0;
+    while (total_written < bytes_received) {
+        uint32_t chunk = min(CHUNK_SIZE, bytes_received - total_written);
+        UINT written;
+
+        fr = f_write(&fil, file_buffer + total_written, chunk, &written);
+        if (fr != FR_OK || written != chunk) {
+            f_close(&fil);
+            sd_card_restore_spi_speed(prev_speed);
+            return false;
+        }
+
+        total_written += written;
+    }
+
+    // 6. Sync and close
+    f_sync(&fil);
+    f_close(&fil);
+
+    // 7. Restore display SPI speed
+    sd_card_restore_spi_speed(prev_speed);
+
+    return true;
+}
+```
+
+## 9. Testing Checklist
+
+When implementing new SD card functionality:
+
+- [ ] **SPI bus contention checked** - verify `!is_refresh_in_progress()` before SD operations
+- [ ] SPI speed switching is in place
+- [ ] All FatFS return codes are checked
+- [ ] Files are properly closed after operations
+- [ ] Memory is cleaned up (no leaks)
+- [ ] Error messages are informative
+- [ ] Tested with both small and large files
+- [ ] Tested overwriting existing files
+- [ ] Tested with non-existent directories
+- [ ] Verified data integrity (read back after write)
+
+## Summary
+
+The most important rules:
+1. **⚠️ CRITICAL: Avoid SPI bus contention** - Check `!is_refresh_in_progress()` before SD operations (display and SD share SPI bus)
+2. **Always manage SPI speed** around FatFS operations
+3. **Poll for SD card responses** - don't assume immediate response
+4. **Check error codes** on every operation
+5. **Clean up memory** before creating new game instances
+6. **Write in chunks** for large files
+7. **Sync before closing** to ensure data is written
+
+Following these practices will save hours of debugging SD card issues!

.gitignore

@@ -1,3 +1,12 @@
 build
 !.vscode/*
 build*/
+*.o
+*.o.d
+*.a
+*.so
+*.dylib
+CMakeFiles/
+*.cmake
+emulator/build/
+.DS_Store

CMakeLists.txt

@@ -48,6 +48,7 @@ add_executable(basic1
     basic1.cpp
     lib/input_manager.cpp
     lib/game_launcher.cpp
+    lib/serial_uploader.cpp
     games/tic_tac_toe.cpp
     games/demo_game.cpp
     games/monopoly/monopoly_game.cpp
@@ -56,6 +57,7 @@ add_executable(basic1
     games/lua_bindings.cpp
     games/lua_game_loader.cpp
     lib/st7796/st7796.c 
+    lib/st7789/st7789.c 
     lib/ft6336u/ft6336u.c 
     lib/sd_card/sd_card.c 
     display/low_level_render.cpp 
@@ -91,7 +93,11 @@ pico_enable_stdio_usb(basic1 1)
 
 # Add the standard library to the build
 target_link_libraries(basic1
-        pico_stdlib)
+        pico_stdlib
+        hardware_dma
+        hardware_spi
+        hardware_pwm
+)
 
 # Add the standard include files to the build
 target_include_directories(basic1 PRIVATE
@@ -102,6 +108,7 @@ target_include_directories(basic1 PRIVATE
     ${CMAKE_CURRENT_LIST_DIR}/lib/lua
     ${CMAKE_CURRENT_LIST_DIR}/lib/fatfs/source
     ${CMAKE_CURRENT_LIST_DIR}/lib/st7796
+    ${CMAKE_CURRENT_LIST_DIR}/lib/st7789
     ${CMAKE_CURRENT_LIST_DIR}/lib/ft6336u
     ${CMAKE_CURRENT_LIST_DIR}/lib/sd_card
     ${CMAKE_CURRENT_LIST_DIR}/display
@@ -113,6 +120,7 @@ target_include_directories(basic1 PRIVATE
 target_link_libraries(basic1 
         hardware_spi
         hardware_i2c
+        hardware_pwm
         pico_multicore
         m
 )

GAMES_PLAN.md

@@ -0,0 +1,124 @@
+# basic1 Lua Games Implementation Plan
+
+## Overview
+Build a collection of games for the basic1 homemade console, implementing them sequentially based on complexity and learning value.
+
+## Game List & Priority
+
+### Tier 1: Foundational (Start Here)
+These teach core mechanics and are quick wins.
+
+1. **Flappy Bird** ✅ DONE
+   - Mechanics: Gravity, collision, scrolling obstacles
+   - Complexity: Low
+   - Time Estimate: 1-2 hours
+   - Learning: Gravity physics, obstacle spawning, game states
+   - API Usage: Circle/rect drawing, gravity math, simple event handling
+
+2. **Breakout/Brick Breaker** ✅ DONE
+   - Mechanics: Ball physics, paddle control, grid destruction
+   - Complexity: Low-Medium
+   - Time Estimate: 2-3 hours
+   - Learning: Collision detection, grid management, ball reflection angles
+   - API Usage: Rect grids, ball physics (similar to Pong), score tracking
+
+3. **Simon Says** ✅ DONE
+   - Mechanics: Color sequence memory, pattern growing
+   - Complexity: Low
+   - Time Estimate: 1-2 hours
+   - Learning: State management, sequence arrays, timing
+   - API Usage: Rect drawing, button input, frame timing
+
+### Tier 2: Medium Difficulty (Build After Tier 1)
+These combine mechanics and add complexity.
+
+4. **Tetris** ✅ DONE
+   - Mechanics: Falling pieces, rotation, line clearing, gravity
+   - Complexity: Medium
+   - Time Estimate: 4-5 hours
+   - Learning: Grid-based movement, rotation matrices, collision
+   - API Usage: Rect grid system, complex state tracking, rapid updates
+
+5. **Asteroids** ✅ DONE
+   - Mechanics: Spaceship control, rotation, projectiles, spawning
+   - Complexity: Medium
+   - Time Estimate: 3-4 hours
+   - Learning: Vector math, object pooling, spawn waves
+   - API Usage: Line drawing, rotation math, multiple entity management
+
+### Tier 3: Advanced (Polish & Challenge)
+These build on previous learnings.
+
+6. **Memory/Matching Game** ✅ DONE
+   - Mechanics: Tile flipping, pair matching, timer
+   - Complexity: Medium
+   - Time Estimate: 2-3 hours
+   - Learning: Hidden state management, animations
+   - API Usage: Grid layout, simple animations
+
+7. **Air Hockey** ✅ DONE
+   - Mechanics: 2-player, ball physics, faster pace than Pong
+   - Complexity: Medium
+   - Time Estimate: 2-3 hours
+   - Learning: Improved physics, AI paddle (optional)
+   - API Usage: Ball physics refinement, smooth controls
+
+### Tier 4: Polish & Variants
+Once core games work, extend with variants or features.
+
+8. **2048** ✅ DONE
+   - Mechanics: Grid merging, swipe logic, exponential growth
+   - Complexity: Medium
+   - Time Estimate: 3-4 hours
+   - Learning: Swipe detection, grid animation, merge logic
+   - API Usage: Grid rendering, touch gesture interpretation
+
+9. **Tic-Tac-Toe** ✅ DONE
+   - Mechanics: Grid selection, AI opponent (minimax)
+   - Complexity: Low-Medium
+   - Time Estimate: 2-3 hours
+   - Learning: Game tree search, AI logic
+   - API Usage: Grid UI, event handling, win detection
+
+10. **Lunar Lander** ✅ DONE
+    - Mechanics: Thrust, rotation, gravity, soft landing
+    - Complexity: Medium-High
+    - Time Estimate: 3-4 hours
+    - Learning: Advanced physics, control feel
+    - API Usage: Vector math, acceleration, fuel management
+
+## Implementation Strategy
+
+**Per Game:**
+1. Write game file in `/Users/adolforeyna/Projects/basic1/games/lua_examples/`
+2. Test locally if possible, or prepare for SD card deployment
+3. Document key mechanics in comments
+4. Update this plan with completion status
+5. Save daily progress to `memory/YYYY-MM-DD.md`
+
+**Patterns to Reuse:**
+- State machine (MENU → PLAYING → GAME_OVER)
+- `game.vars` for all state
+- `game.set_frame_updates(true)` for animation
+- Touch input handling (left/right screen halves for 2-player, center for single)
+
+**Testing Checklist (per game):**
+- [ ] Initializes without crashes
+- [ ] Main gameplay loop works
+- [ ] Input is responsive
+- [ ] Collision detection accurate
+- [ ] Score/state tracking correct
+- [ ] Game over condition triggers
+- [ ] Restart from menu works
+
+## Notes
+
+- Monochrome display = simple visuals, focus on mechanics
+- Touch controls are the primary input
+- Frame-based animation keeps things smooth
+- Each game builds on previous learnings
+- Start simple, layer complexity progressively
+
+---
+
+**Current Status:** All 10 games complete. Ready for SD card deployment.

UPLOAD_TOOL.md

@@ -0,0 +1,151 @@
+# Lua Game Upload Tool
+
+Rapidly upload and execute Lua games on your RP2350 via USB serial for quick iteration during development!
+
+## Features
+
+- Upload Lua game files directly to the SD card via USB serial
+- Automatically launches the uploaded game immediately
+- No need to manually swap SD cards or restart the device
+- Perfect for rapid game development and testing
+
+## Requirements
+
+### Computer Side
+- Python 3.x
+- pyserial library: `pip install pyserial`
+
+### RP2350 Side
+- Firmware must be built with serial uploader support (already included)
+- SD card inserted and formatted (FAT32)
+- USB connection to computer
+
+## Usage
+
+### 1. Connect Your Device
+
+Connect your RP2350 to your computer via USB. The device will appear as a serial port:
+- **Linux/Mac**: Usually `/dev/ttyACM0` or `/dev/ttyUSB0`
+- **Windows**: Usually `COM3`, `COM4`, etc.
+
+### 2. Upload a Lua Game
+
+Basic usage:
+```bash
+python upload_game.py my_game.lua
+```
+
+Specify a custom serial port:
+```bash
+python upload_game.py my_game.lua /dev/ttyACM0    # Linux/Mac
+python upload_game.py my_game.lua COM3            # Windows
+```
+
+The script will:
+1. Read your Lua file
+2. Upload it to the RP2350 via serial
+3. Save it to `/games/<filename>.lua` on the SD card
+4. Automatically launch the game!
+
+### 3. View Available Serial Ports
+
+Run the script without arguments to see available ports:
+```bash
+python upload_game.py
+```
+
+## Example Workflow
+
+```bash
+# Edit your game
+vim snake.lua
+
+# Upload and test (the game starts immediately!)
+python upload_game.py snake.lua
+
+# Make changes
+vim snake.lua
+
+# Upload again (instantly replaces and restarts)
+python upload_game.py snake.lua
+```
+
+## Protocol Details
+
+The tool uses a simple text-based protocol over USB serial:
+
+```
+UPLOAD <filename> <size_in_bytes>
+<base64_encoded_file_content>
+END
+```
+
+**Response:**
+```
+OK <bytes_written>
+LAUNCHED <game_name>
+```
+
+## Troubleshooting
+
+### "No serial port found"
+- Make sure your device is connected via USB
+- Check if the device appears in your system (use `ls /dev/tty*` on Linux/Mac)
+- On Linux, you may need to add your user to the `dialout` group: `sudo usermod -a -G dialout $USER`
+
+### "Permission denied"
+On Linux/Mac, you may need permissions to access the serial port:
+```bash
+sudo chmod 666 /dev/ttyACM0  # Quick fix
+# OR
+sudo usermod -a -G dialout $USER && newgrp dialout  # Permanent fix
+```
+
+### "Upload failed" or "ERROR" messages
+- Make sure the SD card is properly inserted and formatted (FAT32)
+- Check that there's enough space on the SD card
+- Verify the Lua file is valid (syntax errors will appear when game launches)
+
+### Game doesn't appear or launch
+- Check the serial output from the RP2350 for error messages
+- Ensure the Lua file has proper metadata comments at the top:
+  ```lua
+  -- NAME: My Game
+  -- DESCRIPTION: A fun game
+  ```
+
+## Tips for Rapid Development
+
+1. **Use a serial terminal** alongside uploads to see debug output:
+   ```bash
+   screen /dev/ttyACM0 115200
+   ```
+
+2. **Create a watch script** to auto-upload on file changes:
+   ```bash
+   while inotifywait -e modify my_game.lua; do
+       python upload_game.py my_game.lua
+   done
+   ```
+
+3. **Use printf() in Lua** for debugging:
+   ```lua
+   function update(event)
+       print("Event type: " .. event.type)
+       -- your code here
+   end
+   ```
+
+## File Size Limits
+
+- Maximum file size: 64 KB
+- This should be plenty for most Lua games
+- If you need more, consider splitting assets or code
+
+## Related Files
+
+- `lib/serial_uploader.h` - C++ header for serial upload handler
+- `lib/serial_uploader.cpp` - C++ implementation
+- `upload_game.py` - Python upload script
+
+Happy game development! 🎮

basic1.cpp

@@ -40,12 +40,16 @@
 #include "pico/multicore.h"
 #include "board_config.h"  // Board-specific pin configuration
 #include "sd_card.h"
+extern "C" {
+    #include "ff.h"  // FatFS
+}
 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>
 #include "display/low_level_render.h"
 #include "display/low_level_display.h"
 #include "display/low_level_display_epaper.h"
+#include "display/low_level_display_st7796.h"
 #include "display/low_level_touch.h"
 #include "input_manager.h"
 #include "game.h"
@@ -54,6 +58,7 @@
 #include "demo_game.h"
 #include "monopoly_game.h"
 #include "lua_game_loader.h"
+#include "serial_uploader.h"
 
 
 // Binary info for RP2350 - ensures proper boot image structure
@@ -83,7 +88,7 @@ void core1_entry() {
     while (1) {
         // Wait for refresh request
         if (refresh_requested && refresh_buffer && refresh_display) {
-            refresh_in_progress = true;
+            // refresh_in_progress is already set by Core 0 to lock the buffer
             
             // Get local copies for safe access
             LowLevelDisplay* display = refresh_display;
@@ -95,7 +100,7 @@ void core1_entry() {
             
             // Clear flags
             refresh_requested = false;
-            refresh_in_progress = false;
+            refresh_in_progress = false; // Unlock buffer for Core 0
         }
         
         // Small delay to avoid busy-waiting
@@ -119,6 +124,10 @@ bool refresh_screen_async(const uint8_t *buffer, LowLevelDisplay* display) {
         return false;
     }
     
+    // Lock the buffer immediately on Core 0 to prevent race condition
+    // Core 1 will unlock it (set to false) when done
+    refresh_in_progress = true;
+    
     // Queue refresh on Core 1
     refresh_buffer = buffer;
     refresh_display = display;
@@ -148,6 +157,86 @@ struct GameConfig {
     bool debug_verbose;            // Print debug messages
 };
 
+// ============================================================================
+// DISPLAY DIMMING CONFIGURATION
+// ============================================================================
+
+// Display dimming settings
+#define DIM_TIMEOUT_MS (2 * 60 * 1000)   // 2 minutes to dim
+#define SLEEP_TIMEOUT_MS (10 * 60 * 1000) // 10 minutes to sleep
+#define DIM_CHECK_INTERVAL_MS 10000      // Check every 10 seconds
+
+// Display dimming state
+static uint32_t last_interaction_time = 0;  // Last time user interacted
+static bool is_idle_2min_triggered = false; // Flag for 2min trigger
+static bool is_idle_10min_triggered = false; // Flag for 10min trigger
+static volatile bool dim_check_flag = false;  // Flag set by timer to check dimming
+static LowLevelDisplay* global_display = nullptr;  // Global display pointer for timer callback
+
+/**
+ * @brief Update last interaction time and notify display driver
+ * 
+ * Call this whenever the user interacts with the device (touch, button press).
+ * The display driver handles specific wake/restore logic.
+ * 
+ * @param display Pointer to display interface
+ */
+static inline void record_user_interaction(LowLevelDisplay* display) {
+    last_interaction_time = to_ms_since_boot(get_absolute_time());
+    
+    // Reset idle flags
+    is_idle_2min_triggered = false;
+    is_idle_10min_triggered = false;
+    
+    // Notify display driver of interaction
+    display->on_user_interaction();
+}
+
+/**
+ * @brief Timer callback to periodically check dimming status
+ * 
+ * This alarm callback fires every DIM_CHECK_INTERVAL_MS milliseconds
+ * to wake the CPU from __wfi() and check if dimming should occur.
+ * Running in interrupt context, so just sets a flag for main loop.
+ * 
+ * @param id Alarm ID (unused)
+ * @param user_data User data pointer (unused)
+ * @return Next alarm time (relative to current time)
+ */
+static int64_t dim_check_alarm_callback(alarm_id_t id, void *user_data) {
+    // Set flag to check dimming in main loop
+    dim_check_flag = true;
+    
+    // Return interval in microseconds for next alarm
+    // Negative value means schedule relative to now
+    return -(DIM_CHECK_INTERVAL_MS * 1000);
+}
+
+/**
+ * @brief Check if idle thresholds have been met and notify display driver
+ * 
+ * Checks elapsed time since last interaction and calls the appropriate
+ * display driver methods (on_idle_2min or on_idle_10min).
+ * 
+ * @param display Pointer to display interface
+ */
+static inline void check_and_apply_dimming(LowLevelDisplay* display) {
+    uint32_t current_time = to_ms_since_boot(get_absolute_time());
+    uint32_t elapsed = current_time - last_interaction_time;
+    
+    // Check for 10 minute timeout (Sleep)
+    if (!is_idle_10min_triggered && elapsed >= SLEEP_TIMEOUT_MS) {
+        display->on_idle_10min();
+        is_idle_10min_triggered = true;
+        is_idle_2min_triggered = true; // Implicitly triggered
+    }
+    // Check for 2 minute timeout (Dim)
+    else if (!is_idle_2min_triggered && elapsed >= DIM_TIMEOUT_MS) {
+        display->on_idle_2min();
+        is_idle_2min_triggered = true;
+    }
+}
+
 // ============================================================================
 // INTERRUPT HANDLERS (Keep these minimal!)
 // ============================================================================
@@ -284,6 +373,13 @@ int main()
         return -1;
     }
 
+    // Enable dirty rectangle optimization for ST7796 displays
+    if (display->get_type() == DISPLAY_TYPE_ST7796) {
+        LowLevelDisplayST7796* st7796_display = static_cast<LowLevelDisplayST7796*>(display);
+        st7796_display->enable_dirty_rect(true);
+        printf("Dirty rectangle optimization enabled (4 quadrants: TL/TR/BL/BR split)\n");
+    }
+
     // Launch Core 1 for display refresh handling
     printf("Launching Core 1 for display refresh...\n");
     multicore_launch_core1(core1_entry);
@@ -346,6 +442,10 @@ int main()
     // Create GameLauncher
     GameLauncher launcher(V_WIDTH, V_HEIGHT, &renderer, &gui, &input_manager);
 
+    // Create SerialUploader for rapid game iteration
+    SerialUploader serial_uploader(&launcher);
+    printf("Serial uploader initialized\n");
+
     // Register available games
     launcher.register_game("Tic-Tac-Toe", "Classic 2-player game",
         [](uint16_t w, uint16_t h, LowLevelRenderer* r, LowLevelGUI* g, InputManager* im) -> Game* {
@@ -364,10 +464,33 @@ int main()
             return new DemoGame(w, h, r, g, im);
         });
     
+    // Initialize SD card and mount filesystem
+    printf("\nInitializing SD card...\n");
+    bool sd_available = sd_card_init_with_board_config();
+    if (sd_available) {
+        printf("SD card initialized successfully\n");
+        
+        // Mount FatFS filesystem
+        static FATFS fs;
+        FRESULT res = f_mount(&fs, "0:", 1);  // Mount drive 0 immediately
+        if (res == FR_OK) {
+            printf("FatFS mounted successfully\n");
+            
             // Register Lua games from SD card /games directory
-    printf("\nScanning for Lua games on SD card...\n");
+            printf("Scanning for Lua games on SD card...\n");
             int lua_games_found = LuaGameLoader::register_all_games(&launcher);
             printf("Found %d Lua game(s)\n", lua_games_found);
+        } else {
+            printf("FatFS mount failed (error %d) - SD card may not be formatted\n", res);
+        }
+        
+        // Restore display SPI speed (SD card shares same SPI bus)
+        // SD card init sets SPI to 12.5 MHz, but display needs 32 MHz for fast refresh
+        spi_set_baudrate(DISPLAY_SPI_PORT, SPI_BAUDRATE);
+        printf("Display SPI speed restored to %d MHz\n", SPI_BAUDRATE / 1000000);
+    } else {
+        printf("SD card not available - skipping Lua game scan\n");
+    }
     
     // Draw launcher menu
     launcher.draw();
@@ -406,13 +529,6 @@ int main()
     printf("Button interrupts enabled (falling edge = press)\n");
 #endif
     
-    // Test SD card and FatFS
-    // if (sd_card_init_with_board_config()) {
-    //    sd_card_test_fatfs();
-    // } else {
-    //    printf("SD Card initialization failed or no card present\n");
-    // }
-    
     // ========================================================================
     // REACTIVE GAME LOOP WITH DUAL-CORE REFRESH
     // ========================================================================
@@ -429,18 +545,69 @@ int main()
     uint32_t last_touch_time = 0;
     bool pending_refresh = false;  // Track if we have a pending refresh
     
+    // Initialize last interaction time to current time
+    last_interaction_time = to_ms_since_boot(get_absolute_time());
+    global_display = display;
+    
+    // Set up repeating alarm to periodically check dimming status
+    // This wakes the CPU from __wfi() every DIM_CHECK_INTERVAL_MS
+    add_alarm_in_ms(DIM_CHECK_INTERVAL_MS, dim_check_alarm_callback, nullptr, true);
+    
+    if (display->get_type() == DISPLAY_TYPE_ST7796) {
+        printf("Power saving: Dim at %d min, Sleep at %d min\n", 
+               DIM_TIMEOUT_MS / 60000, SLEEP_TIMEOUT_MS / 60000);
+    } else {
+        printf("Power saving: Sleep at %d min\n", SLEEP_TIMEOUT_MS / 60000);
+    }
+    printf("Dimming check timer set to %d seconds\n", DIM_CHECK_INTERVAL_MS / 1000);
+    
     printf("\nEntering reactive game loop (Core 0 - input & logic)\n");
-    printf("Display refreshes handled by Core 1\n\n");
+    printf("Display refreshes handled by Core 1\n");
+    printf("Frame rate limited to 30 FPS (33.3ms per frame)\n\n");
 
     Game* current_game = nullptr;
     uint32_t game_start_time = 0;
 
+    // Frame rate limiting (30 FPS = 33.33ms per frame)
+    const uint32_t TARGET_FRAME_TIME_MS = 33;  // 1000ms / 30fps ≈ 33ms
+    uint32_t last_frame_time = 0;
+
+    bool needs_refresh = false;  // Track if screen needs redraw
+
     while (1) {
+        // 0. Process serial uploads (for rapid game iteration)
+        serial_uploader.process();
+
+        // If serial uploader wants to launch a game, wait until it's safe (no display refresh)
+        if (serial_uploader.wants_to_launch_game() && !is_refresh_in_progress()) {
+            // Safe to launch now - no SPI conflict with display
+            bool game_launched = serial_uploader.complete_launch();
+            if (game_launched) {
+                // A new game was uploaded and launched - trigger redraw
+                needs_refresh = true;
+                current_game = launcher.get_selected_game();
+                // Note: game is already initialized by select_game_by_name()
+            }
+        }
+
+        // Determine if we should sleep or stay awake for updates
+        bool stay_awake = false;
+        if (pending_refresh) stay_awake = true;
+        if (serial_uploader.wants_to_launch_game()) stay_awake = true;  // Don't sleep while waiting to launch
+
+        if (launcher.is_game_selected()) {
+            Game* g = launcher.get_selected_game();
+            if (g && g->wants_frame_updates()) {
+                stay_awake = true;
+            }
+        }
+
+        if (!stay_awake) {
             // Sleep until interrupt wakes us up (very power efficient!)
             __wfi();  // Wait For Interrupt - CPU sleeps until any interrupt occurs
+        }
 
         InputEvent input = {INPUT_NONE, 0, 0, 0, 0, 0, false};
-        bool needs_refresh = false;
         
         // 1. Process button input first (higher priority)
         input = input_manager.process_button_input();
@@ -457,6 +624,9 @@ int main()
         
         // 3. Process input based on current state
         if (input.valid) {
+            // Record user interaction for dimming timer
+            record_user_interaction(display);
+            
             // if debugging enabled, print input event
             if (config.debug_verbose) {
                 printf("Input Event: type=%d, x=%d, y=%d, gesture=0x%02X, button=%d, pressure=%d\n",
@@ -491,7 +661,7 @@ int main()
                     }
                 } else if (input.type == INPUT_TOUCH_UP) {
                     uint32_t now = to_ms_since_boot(get_absolute_time());
-                    if (game_start_time > 0 && (now - game_start_time) > 2000) {
+                    if (game_start_time > 0 && (now - game_start_time) > 10000) {
                         // Long press detected - return to menu
                         printf("Long press detected - returning to launcher\n");
                         launcher.reset();
@@ -522,8 +692,28 @@ int main()
             }
         } 
         
-        // 4. Redraw and queue async refresh on Core 1
+        if (launcher.is_game_selected()) {
+            // No input, but check if game wants continuous updates
+            current_game = launcher.get_selected_game();
+            if (current_game->wants_frame_updates()) {
+                // Only send frame tick if we're ready to draw the next frame
+                if (!is_refresh_in_progress()) {
+                    InputEvent frame_tick = {INPUT_FRAME_TICK, 0, 0, 0, 0, 0, true};
+                    needs_refresh = current_game->update(frame_tick) || needs_refresh;
+                }
+            }
+        }
+        
+        // 4. Redraw and queue async refresh on Core 1 (with 30 FPS limiting)
         if (needs_refresh || pending_refresh) {
+            // Check frame rate limiting
+            uint32_t current_time = to_ms_since_boot(get_absolute_time());
+            uint32_t time_since_last_frame = current_time - last_frame_time;
+
+            // Only proceed if enough time has passed since last frame
+            if (time_since_last_frame >= TARGET_FRAME_TIME_MS) {
+                // Only draw if Core 1 is finished with the buffer
+                if (!is_refresh_in_progress()) {
                     // Clear buffer and redraw entire UI with updated state
                     memset(bit_buffer, 0, V_WIDTH * V_HEIGHT / 8);
 
@@ -539,14 +729,28 @@ int main()
 
                     if (refresh_started) {
                         pending_refresh = false;  // Refresh queued successfully
+                        last_frame_time = current_time;  // Update frame time
                     } else {
-                pending_refresh = true;   // Core 1 busy, retry next iteration
-                if (config.debug_verbose) {
-                    printf("Refresh pending - Core 1 still busy\n");
+                        pending_refresh = true;
+                    }
+                } else {
+                    pending_refresh = true;
+                }
+            } else {
+                // Frame rate limit: skip this frame, wait for next opportunity
+                // Sleep for the remaining time to reach target frame time
+                uint32_t remaining_time = TARGET_FRAME_TIME_MS - time_since_last_frame;
+                if (remaining_time > 1) {
+                    sleep_ms(remaining_time - 1);  // -1 to account for overhead
+                }
             }
         }
         
-            // Core 0 continues immediately, Core 1 handles the refresh
+        // 5. Check if display should be dimmed due to inactivity
+        // This flag is set by timer alarm every DIM_CHECK_INTERVAL_MS
+        if (dim_check_flag) {
+            dim_check_flag = false;
+            check_and_apply_dimming(display);
         }
     }
     

diskio_sdcard.c

@@ -6,6 +6,8 @@
 #include "diskio.h"
 #include "sd_card.h"
 #include <string.h>
+#include <stdio.h>
+#include <stdbool.h>
 
 /* Definitions of physical drive number for each drive */
 #define DEV_SD   0    /* SD card */
@@ -21,7 +23,7 @@ DSTATUS disk_status (
     if (pdrv != DEV_SD) return STA_NOINIT;
 
     // Assume SD card is always initialized after sd_card_init() is called
-    return 0;  // OK
+    return 0;  // OK - not write protected, not removed
 }
 
 /*-----------------------------------------------------------------------*/
@@ -76,7 +78,10 @@ DRESULT disk_write (
     if (pdrv != DEV_SD) return RES_PARERR;
 
     for (UINT i = 0; i < count; i++) {
-        if (!sd_card_write_block(sector + i, (uint8_t*)(buff + (i * 512)))) {
+        bool result = sd_card_write_block(sector + i, (uint8_t*)(buff + (i * 512)));
+
+        if (!result) {
+            printf("ERROR disk_write failed at sector %lu\n", (unsigned long)(sector + i));
             return RES_ERROR;
         }
     }
@@ -131,6 +136,11 @@ DRESULT disk_ioctl (
             res = RES_OK;
             break;
 
+        case CTRL_TRIM:
+            // Inform device that data on the block of sectors is no longer used (optional)
+            res = RES_OK;
+            break;
+
         default:
             res = RES_PARERR;
     }

display/low_level_display.h

@@ -32,9 +32,19 @@ public:
     // Optional: Backlight control (if supported)
     virtual void set_backlight(bool on) { (void)on; }
     
+    // Optional: Brightness control (if supported)
+    // brightness: 0-100 (percentage), 0=off, 100=full brightness
+    virtual void set_brightness(uint8_t brightness) { (void)brightness; }
+    virtual uint8_t get_brightness() const { return 100; }  // Default to full brightness
+    
     // Optional: Orientation control (not commonly needed for bitmap displays)
     virtual void set_rotation(uint8_t rotation) { (void)rotation; }
     
+    // Power saving hooks
+    virtual void on_idle_2min() {}
+    virtual void on_idle_10min() {}
+    virtual void on_user_interaction() {}
+
     // Factory method - creates display based on type, using board_config.h for pins
     static LowLevelDisplay* create(DisplayType type, int width, int height);
 };

display/low_level_display_epaper.cpp

@@ -141,3 +141,24 @@ void LowLevelDisplayEPaper::sleep() {
     printf("Putting e-paper display to sleep...\n");
     EPD_4IN2_V2_Sleep();
 }
+
+void LowLevelDisplayEPaper::on_idle_2min() {
+    // E-paper doesn't dim
+}
+
+void LowLevelDisplayEPaper::on_idle_10min() {
+    if (!is_sleeping) {
+        sleep();
+        is_sleeping = true;
+        printf("E-Paper: Entered sleep mode\n");
+    }
+}
+
+void LowLevelDisplayEPaper::on_user_interaction() {
+    if (is_sleeping) {
+        printf("E-Paper: Waking from sleep...\n");
+        init(); // Re-initialize to wake up
+        is_sleeping = false;
+        printf("E-Paper: Ready\n");
+    }
+}

display/low_level_display_epaper.h

@@ -44,6 +44,14 @@ public:
     void clear_display();  // Full clear with refresh
     void full_refresh();   // Force full screen refresh (slower but removes ghosting)
     void sleep();          // Put display in low power mode
+
+    // Power saving hooks
+    void on_idle_2min() override;
+    void on_idle_10min() override;
+    void on_user_interaction() override;
+
+private:
+    bool is_sleeping = false;
 };
 
 #endif // LOW_LEVEL_DISPLAY_EPAPER_H

display/low_level_display_st7789.cpp

@@ -69,11 +69,51 @@ void LowLevelDisplayST7789::refresh() {
 }
 
 void LowLevelDisplayST7789::set_backlight(bool on) {
-    // TODO: Implement
-    (void)on;
+    set_brightness(on ? 100 : 0);
+}
+
+void LowLevelDisplayST7789::set_brightness(uint8_t brightness) {
+    st7789_set_brightness(brightness);
+}
+
+uint8_t LowLevelDisplayST7789::get_brightness() const {
+    return st7789_get_brightness();
 }
 
 void LowLevelDisplayST7789::set_rotation(uint8_t rotation) {
     // TODO: Implement
     (void)rotation;
 }
+
+void LowLevelDisplayST7789::on_idle_2min() {
+    if (!is_dimmed && !is_sleeping) {
+        saved_brightness = get_brightness();
+        set_brightness(5); // Dim to 5%
+        is_dimmed = true;
+        printf("ST7789: Dimmed to 5%%\n");
+    }
+}
+
+void LowLevelDisplayST7789::on_idle_10min() {
+    if (!is_sleeping) {
+        st7789_sleep();
+        is_sleeping = true;
+        is_dimmed = true; // Sleep implies dimmed
+        printf("ST7789: Entered sleep mode\n");
+    }
+}
+
+void LowLevelDisplayST7789::on_user_interaction() {
+    if (is_sleeping) {
+        st7789_wake();
+        // Restore brightness if we have a saved value, or default to 100
+        set_brightness(saved_brightness > 0 ? saved_brightness : 100);
+        is_sleeping = false;
+        is_dimmed = false;
+        printf("ST7789: Woke from sleep\n");
+    } else if (is_dimmed) {
+        set_brightness(saved_brightness > 0 ? saved_brightness : 100);
+        is_dimmed = false;
+        printf("ST7789: Restored brightness\n");
+    }
+}

display/low_level_display_st7789.h

@@ -2,17 +2,7 @@
 #define LOW_LEVEL_DISPLAY_ST7789_H
 
 #include "low_level_display.h"
-
-// ST7789 configuration structure (similar to ST7796)
-struct st7789_config {
-    void* spi;           // SPI instance
-    int gpio_din;        // MOSI pin
-    int gpio_clk;        // Clock pin
-    int gpio_cs;         // Chip select pin
-    int gpio_dc;         // Data/Command pin
-    int gpio_rst;        // Reset pin
-    int gpio_bl;         // Backlight pin
-};
+#include "st7789.h"
 
 class LowLevelDisplayST7789 : public LowLevelDisplay {
 private:
@@ -42,8 +32,22 @@ public:
     // Backlight control
     void set_backlight(bool on) override;
     
+    // Brightness control
+    void set_brightness(uint8_t brightness) override;
+    uint8_t get_brightness() const override;
+
     // Orientation control
     void set_rotation(uint8_t rotation) override;
+
+    // Power saving hooks
+    void on_idle_2min() override;
+    void on_idle_10min() override;
+    void on_user_interaction() override;
+
+private:
+    uint8_t saved_brightness = 100;
+    bool is_dimmed = false;
+    bool is_sleeping = false;
 };
 
 #endif // LOW_LEVEL_DISPLAY_ST7789_H

display/low_level_display_st7796.cpp

@@ -1,13 +1,19 @@
 #include "low_level_display_st7796.h"
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
+#include <cstdlib>  // For abs()
 
 // RGB565 color definitions
 #define COLOR_BLACK   0x0000
 #define COLOR_WHITE   0xFFFF
 
 LowLevelDisplayST7796::LowLevelDisplayST7796(const st7796_config* cfg, int w, int h, bool invert)
-    : config(cfg), width(w), height(h), initialized(false), rgb_buffer(nullptr), invert_color(invert) {
+    : config(cfg), width(w), height(h), initialized(false), rgb_buffer(nullptr), invert_color(invert),
+      prev_bit_buffer(nullptr), dirty_rect_enabled(true) {
+    for (int i = 0; i < MAX_DIRTY_RECTS; i++) {
+        dirty_rects[i].reset();
+    }
 }
 
 LowLevelDisplayST7796::~LowLevelDisplayST7796() {
@@ -15,6 +21,10 @@ LowLevelDisplayST7796::~LowLevelDisplayST7796() {
         free(rgb_buffer);
         rgb_buffer = nullptr;
     }
+    if (prev_bit_buffer) {
+        free(prev_bit_buffer);
+        prev_bit_buffer = nullptr;
+    }
 }
 
 bool LowLevelDisplayST7796::init() {
@@ -49,6 +59,181 @@ void LowLevelDisplayST7796::draw_pixel(int x, int y, bool white) {
 
 void LowLevelDisplayST7796::draw_buffer(const uint8_t* bit_buffer) {
     if (!bit_buffer || !rgb_buffer) return;
+
+    // Calculate buffer size
+    size_t bit_buffer_size = (width * height + 7) / 8;
+
+    // If dirty rectangle tracking is enabled and we have a previous buffer
+    if (dirty_rect_enabled && prev_bit_buffer) {
+        // Reset all dirty rectangles
+        for (int i = 0; i < MAX_DIRTY_RECTS; i++) {
+            dirty_rects[i].reset();
+        }
+
+        // Split screen into 4 quadrants
+        int mid_x = width / 2;
+        int mid_y = height / 2;
+
+        // Use bitwise XOR to quickly detect changed bytes
+        for (size_t byte_idx = 0; byte_idx < bit_buffer_size; byte_idx++) {
+            uint8_t diff = bit_buffer[byte_idx] ^ prev_bit_buffer[byte_idx];
+
+            // If this byte has changes
+            if (diff != 0) {
+                // Calculate pixel coordinates for this byte
+                int pixel_idx = byte_idx * 8;
+                int base_x = pixel_idx % width;
+                int base_y = pixel_idx / width;
+
+                // Check each changed bit/pixel in this byte
+                for (int bit = 0; bit < 8 && (pixel_idx + bit) < (width * height); bit++) {
+                    if (diff & (0x80 >> bit)) {
+                        int x = base_x + bit;
+                        int y = base_y;
+
+                        // Adjust coordinates if we wrapped to next row
+                        if (x >= width) {
+                            x -= width;
+                            y++;
+                        }
+
+                        // Route to appropriate quadrant based on X and Y position
+                        // Quadrant 0: Top-left (x < mid_x, y < mid_y)
+                        // Quadrant 1: Top-right (x >= mid_x, y < mid_y)
+                        // Quadrant 2: Bottom-left (x < mid_x, y >= mid_y)
+                        // Quadrant 3: Bottom-right (x >= mid_x, y >= mid_y)
+                        int rect_idx = ((y >= mid_y) ? 2 : 0) + ((x >= mid_x) ? 1 : 0);
+                        dirty_rects[rect_idx].expand(x, y);
+                    }
+                }
+            }
+        }
+
+        // Check if we have any valid dirty rectangles
+        int valid_rects = 0;
+        for (int i = 0; i < MAX_DIRTY_RECTS; i++) {
+            if (dirty_rects[i].is_valid) {
+                valid_rects++;
+            }
+        }
+
+        // If there are no changes, skip the update
+        if (valid_rects == 0) {
+            return;
+        }
+
+        // Optimization: Merge adjacent rectangles if beneficial
+        // Check pairs of rectangles and merge if they overlap or are close
+        if (valid_rects >= 2) {
+            // Try merging adjacent quadrants
+            // Check top row (0,1) merge
+            if (dirty_rects[0].is_valid && dirty_rects[1].is_valid) {
+                int gap_x = dirty_rects[1].x0 - dirty_rects[0].x1;
+                int gap_y = abs(dirty_rects[0].y0 - dirty_rects[1].y0) + abs(dirty_rects[0].y1 - dirty_rects[1].y1);
+
+                if (gap_x < 30 && gap_y < 20) {
+                    dirty_rects[0].merge(dirty_rects[1]);
+                    dirty_rects[1].reset();
+                    valid_rects--;
+                }
+            }
+
+            // Check bottom row (2,3) merge
+            if (dirty_rects[2].is_valid && dirty_rects[3].is_valid) {
+                int gap_x = dirty_rects[3].x0 - dirty_rects[2].x1;
+                int gap_y = abs(dirty_rects[2].y0 - dirty_rects[3].y0) + abs(dirty_rects[2].y1 - dirty_rects[3].y1);
+
+                if (gap_x < 30 && gap_y < 20) {
+                    dirty_rects[2].merge(dirty_rects[3]);
+                    dirty_rects[3].reset();
+                    valid_rects--;
+                }
+            }
+
+            // Check left column (0,2) merge
+            if (dirty_rects[0].is_valid && dirty_rects[2].is_valid) {
+                int gap_y = dirty_rects[2].y0 - dirty_rects[0].y1;
+                int gap_x = abs(dirty_rects[0].x0 - dirty_rects[2].x0) + abs(dirty_rects[0].x1 - dirty_rects[2].x1);
+
+                if (gap_y < 30 && gap_x < 20) {
+                    dirty_rects[0].merge(dirty_rects[2]);
+                    dirty_rects[2].reset();
+                    valid_rects--;
+                }
+            }
+
+            // Check right column (1,3) merge
+            if (dirty_rects[1].is_valid && dirty_rects[3].is_valid) {
+                int gap_y = dirty_rects[3].y0 - dirty_rects[1].y1;
+                int gap_x = abs(dirty_rects[1].x0 - dirty_rects[3].x0) + abs(dirty_rects[1].x1 - dirty_rects[3].x1);
+
+                if (gap_y < 30 && gap_x < 20) {
+                    dirty_rects[1].merge(dirty_rects[3]);
+                    dirty_rects[3].reset();
+                    valid_rects--;
+                }
+            }
+
+            // Final pass: merge any remaining valid rectangles if they're very close
+            for (int i = 0; i < MAX_DIRTY_RECTS - 1; i++) {
+                if (!dirty_rects[i].is_valid) continue;
+                for (int j = i + 1; j < MAX_DIRTY_RECTS; j++) {
+                    if (!dirty_rects[j].is_valid) continue;
+
+                    DirtyRect merged = dirty_rects[i];
+                    merged.merge(dirty_rects[j]);
+
+                    int combined_area = dirty_rects[i].get_area() + dirty_rects[j].get_area();
+                    int merged_area = merged.get_area();
+
+                    // Merge if the combined overhead is less than 40%
+                    if (merged_area < combined_area * 1.4f) {
+                        dirty_rects[i] = merged;
+                        dirty_rects[j].reset();
+                        valid_rects--;
+                        break;  // Move to next i
+                    }
+                }
+            }
+        }
+
+        // Copy current buffer to previous buffer for next frame comparison
+        memcpy(prev_bit_buffer, bit_buffer, bit_buffer_size);
+
+        // Process each valid dirty rectangle
+        for (int rect_idx = 0; rect_idx < MAX_DIRTY_RECTS; rect_idx++) {
+            if (!dirty_rects[rect_idx].is_valid) continue;
+
+            DirtyRect& rect = dirty_rects[rect_idx];
+
+            // Convert only the dirty rectangle region to RGB565
+            for (int y = rect.y0; y <= rect.y1; y++) {
+                for (int x = rect.x0; x <= rect.x1; x++) {
+                    int byte_index = (y * width + x) / 8;
+                    int bit_index = 7 - (x % 8);
+                    bool pixel_white = (bit_buffer[byte_index] >> bit_index) & 0x01;
+                    bool out_white = invert_color ? !pixel_white : pixel_white;
+                    rgb_buffer[y * width + x] = out_white ? COLOR_WHITE : COLOR_BLACK;
+                }
+            }
+
+            // Draw only this dirty rectangle
+            st7796_set_window(rect.x0, rect.y0, rect.x1, rect.y1);
+
+            // Calculate size of dirty region
+            int dirty_width = rect.get_width();
+            int dirty_height = rect.get_height();
+
+            // Write only the dirty rectangle pixels
+            // We need to extract rows from the full rgb_buffer
+            for (int row = 0; row < dirty_height; row++) {
+                int buffer_offset = (rect.y0 + row) * width + rect.x0;
+                st7796_write_raw((const uint8_t*)&rgb_buffer[buffer_offset], dirty_width * 2);
+            }
+        }
+
+    } else {
+        // Full screen update (original behavior)
         // Convert 1-bit buffer to RGB565 using persistent buffer
         for (int y = 0; y < height; y++) {
             for (int x = 0; x < width; x++) {
@@ -61,7 +246,17 @@ void LowLevelDisplayST7796::draw_buffer(const uint8_t* bit_buffer) {
         }
         // Draw entire buffer at once
         st7796_set_cursor(0, 0);
-    st7796_write(rgb_buffer, width * height);
+        // Use raw write for speed.
+        // Since we only use 0x0000 (Black) and 0xFFFF (White), endianness doesn't matter.
+        // 0x0000 -> 0x00, 0x00 (LE) -> Display sees 0x00, 0x00 (0x0000 correct)
+        // 0xFFFF -> 0xFF, 0xFF (LE) -> Display sees 0xFF, 0xFF (0xFFFF correct)
+        st7796_write_raw((const uint8_t*)rgb_buffer, width * height * 2);
+
+        // If dirty rect is enabled, store this buffer for next comparison
+        if (dirty_rect_enabled && prev_bit_buffer) {
+            memcpy(prev_bit_buffer, bit_buffer, bit_buffer_size);
+        }
+    }
 }
 
 void LowLevelDisplayST7796::refresh() {
@@ -69,9 +264,24 @@ void LowLevelDisplayST7796::refresh() {
 }
 
 void LowLevelDisplayST7796::set_backlight(bool on) {
-    // ST7796 driver doesn't have backlight control yet
-    // TODO: Add GPIO control for backlight pin
-    (void)on;
+    // Use brightness control: on = 100%, off = 0%
+    st7796_set_brightness(on ? 100 : 0);
+}
+
+void LowLevelDisplayST7796::set_brightness(uint8_t brightness) {
+    st7796_set_brightness(brightness);
+}
+
+uint8_t LowLevelDisplayST7796::get_brightness() const {
+    return st7796_get_brightness();
+}
+
+void LowLevelDisplayST7796::sleep() {
+    st7796_sleep();
+}
+
+void LowLevelDisplayST7796::wake() {
+    st7796_wake();
 }
 
 void LowLevelDisplayST7796::set_rotation(uint8_t rotation) {
@@ -79,3 +289,63 @@ void LowLevelDisplayST7796::set_rotation(uint8_t rotation) {
     // TODO: Add MADCTL register manipulation for rotation
     (void)rotation;
 }
+
+void LowLevelDisplayST7796::enable_dirty_rect(bool enabled) {
+    dirty_rect_enabled = enabled;
+
+    if (enabled && !prev_bit_buffer) {
+        // Allocate buffer to store previous frame for change detection
+        size_t bit_buffer_size = (width * height + 7) / 8;  // 1 bit per pixel
+        prev_bit_buffer = (uint8_t *)malloc(bit_buffer_size);
+        if (prev_bit_buffer) {
+            // Initialize to all zeros (black screen)
+            memset(prev_bit_buffer, 0, bit_buffer_size);
+            printf("ST7796: Dirty rectangle tracking enabled (buffer: %zu bytes, max rects: %d)\n",
+                   bit_buffer_size, MAX_DIRTY_RECTS);
+        } else {
+            printf("Error: Failed to allocate %zu bytes for dirty rect buffer\n", bit_buffer_size);
+            dirty_rect_enabled = false;
+        }
+    } else if (!enabled && prev_bit_buffer) {
+        // Disable and free tracking buffer
+        free(prev_bit_buffer);
+        prev_bit_buffer = nullptr;
+        for (int i = 0; i < MAX_DIRTY_RECTS; i++) {
+            dirty_rects[i].reset();
+        }
+        printf("ST7796: Dirty rectangle tracking disabled\n");
+    }
+}
+
+void LowLevelDisplayST7796::on_idle_2min() {
+    if (!is_dimmed && !is_sleeping) {
+        saved_brightness = get_brightness();
+        set_brightness(5); // Dim to 5%
+        is_dimmed = true;
+        printf("TFT: Dimmed to 5%%\n");
+    }
+}
+
+void LowLevelDisplayST7796::on_idle_10min() {
+    if (!is_sleeping) {
+        sleep();
+        is_sleeping = true;
+        is_dimmed = true; // Sleep implies dimmed
+        printf("TFT: Entered sleep mode\n");
+    }
+}
+
+void LowLevelDisplayST7796::on_user_interaction() {
+    if (is_sleeping) {
+        wake();
+        // Restore brightness if we have a saved value, or default to 100
+        set_brightness(saved_brightness > 0 ? saved_brightness : 100);
+        is_sleeping = false;
+        is_dimmed = false;
+        printf("TFT: Woke from sleep\n");
+    } else if (is_dimmed) {
+        set_brightness(saved_brightness > 0 ? saved_brightness : 100);
+        is_dimmed = false;
+        printf("TFT: Restored brightness\n");
+    }
+}

display/low_level_display_st7796.h

@@ -3,6 +3,7 @@
 
 #include "low_level_display.h"
 #include "st7796.h"
+#include <climits>
 
 class LowLevelDisplayST7796 : public LowLevelDisplay {
 private:
@@ -13,6 +14,56 @@ private:
     uint16_t* rgb_buffer;  // Persistent buffer for 1-bit to RGB565 conversion
     bool invert_color;     // If true, swap black/white
 
+    // Dirty rectangle tracking for partial updates
+    uint8_t* prev_bit_buffer;  // Previous frame buffer for change detection
+    bool dirty_rect_enabled;   // Enable/disable dirty rectangle optimization
+
+    struct DirtyRect {
+        int x0, y0;  // Top-left corner
+        int x1, y1;  // Bottom-right corner (inclusive)
+        bool is_valid;
+
+        void reset() {
+            x0 = INT_MAX;
+            y0 = INT_MAX;
+            x1 = -1;
+            y1 = -1;
+            is_valid = false;
+        }
+
+        void expand(int x, int y) {
+            if (x < x0) x0 = x;
+            if (x > x1) x1 = x;
+            if (y < y0) y0 = y;
+            if (y > y1) y1 = y;
+            is_valid = true;
+        }
+
+        int get_width() const { return is_valid ? (x1 - x0 + 1) : 0; }
+        int get_height() const { return is_valid ? (y1 - y0 + 1) : 0; }
+        int get_area() const { return is_valid ? get_width() * get_height() : 0; }
+
+        bool overlaps(const DirtyRect& other) const {
+            if (!is_valid || !other.is_valid) return false;
+            return !(x1 < other.x0 || x0 > other.x1 || y1 < other.y0 || y0 > other.y1);
+        }
+
+        void merge(const DirtyRect& other) {
+            if (!other.is_valid) return;
+            if (!is_valid) {
+                *this = other;
+                return;
+            }
+            x0 = (x0 < other.x0) ? x0 : other.x0;
+            y0 = (y0 < other.y0) ? y0 : other.y0;
+            x1 = (x1 > other.x1) ? x1 : other.x1;
+            y1 = (y1 > other.y1) ? y1 : other.y1;
+        }
+    };
+
+    static constexpr int MAX_DIRTY_RECTS = 4;
+    DirtyRect dirty_rects[MAX_DIRTY_RECTS];  // Support up to 4 dirty rectangles (4 quadrants)
+
 public:
     LowLevelDisplayST7796(const st7796_config* cfg, int w, int h, bool invert = false);
     ~LowLevelDisplayST7796() override;
@@ -33,12 +84,34 @@ public:
     // Backlight control
     void set_backlight(bool on) override;
     
+    // Brightness control (0-100)
+    void set_brightness(uint8_t brightness) override;
+    uint8_t get_brightness() const override;
+    
+    // Power management
+    void sleep();  // Put display to sleep (low power, touch still active)
+    void wake();   // Wake display from sleep
+
     // Orientation control
     void set_rotation(uint8_t rotation) override;
 
     // Color inversion control
     void set_invert_color(bool inv) { invert_color = inv; }
     bool get_invert_color() const { return invert_color; }
+
+    // Power saving hooks
+    void on_idle_2min() override;
+    void on_idle_10min() override;
+    void on_user_interaction() override;
+
+    // Dirty rectangle optimization control
+    void enable_dirty_rect(bool enabled = true);
+    bool is_dirty_rect_enabled() const { return dirty_rect_enabled; }
+
+private:
+    uint8_t saved_brightness = 100;
+    bool is_dimmed = false;
+    bool is_sleeping = false;
 };
 
 #endif // LOW_LEVEL_DISPLAY_ST7796_H

emulator/CMakeCache.txt

@@ -1,5 +1,5 @@
 # This is the CMakeCache file.
-# For build in directory: /Users/adolforeyna/Projects/pico-bare-metal/Adolfo/basic1/emulator
+# For build in directory: /Users/adolforeyna/Projects/basic1/emulator
 # It was generated by CMake: /opt/homebrew/bin/cmake
 # You can edit this file to change values found and used by cmake.
 # If you do not want to change any of the values, simply exit the editor.
@@ -85,7 +85,7 @@ CMAKE_EXE_LINKER_FLAGS_RELWITHDEBINFO:STRING=
 CMAKE_EXPORT_COMPILE_COMMANDS:BOOL=
 
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-CMAKE_FIND_PACKAGE_REDIRECTS_DIR:STATIC=/Users/adolforeyna/Projects/pico-bare-metal/Adolfo/basic1/emulator/CMakeFiles/pkgRedirects
+CMAKE_FIND_PACKAGE_REDIRECTS_DIR:STATIC=/Users/adolforeyna/Projects/basic1/emulator/CMakeFiles/pkgRedirects
 
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@@ -211,7 +211,7 @@ CMAKE_STATIC_LINKER_FLAGS_RELWITHDEBINFO:STRING=
 CMAKE_STRIP:FILEPATH=/usr/bin/strip
 
 //Path to a program.
-CMAKE_TAPI:FILEPATH=/Library/Developer/CommandLineTools/usr/bin/tapi
+CMAKE_TAPI:FILEPATH=/Volumes/ReynaFamily/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/tapi
 
 //If this value is on, makefiles will be generated without the
 // .SILENT directive, and all commands will be echoed to the console
@@ -220,16 +220,19 @@ CMAKE_TAPI:FILEPATH=/Library/Developer/CommandLineTools/usr/bin/tapi
 CMAKE_VERBOSE_MAKEFILE:BOOL=FALSE
 
 //The directory containing a CMake configuration file for SFML.
-SFML_DIR:PATH=SFML_DIR-NOTFOUND
+SFML_DIR:PATH=/opt/homebrew/lib/cmake/SFML
+
+//Path to a file.
+SFML_DOC_DIR:PATH=/opt/homebrew/share/doc/SFML
 
 //Value Computed by CMake
-basic1_emulator_BINARY_DIR:STATIC=/Users/adolforeyna/Projects/pico-bare-metal/Adolfo/basic1/emulator
+basic1_emulator_BINARY_DIR:STATIC=/Users/adolforeyna/Projects/basic1/emulator
 
 //Value Computed by CMake
 basic1_emulator_IS_TOP_LEVEL:STATIC=ON
 
 //Value Computed by CMake
-basic1_emulator_SOURCE_DIR:STATIC=/Users/adolforeyna/Projects/pico-bare-metal/Adolfo/basic1/emulator
+basic1_emulator_SOURCE_DIR:STATIC=/Users/adolforeyna/Projects/basic1/emulator
 
 
 ########################
@@ -241,7 +244,7 @@ CMAKE_ADDR2LINE-ADVANCED:INTERNAL=1
 //ADVANCED property for variable: CMAKE_AR
 CMAKE_AR-ADVANCED:INTERNAL=1
 //This is the directory where this CMakeCache.txt was created
-CMAKE_CACHEFILE_DIR:INTERNAL=/Users/adolforeyna/Projects/pico-bare-metal/Adolfo/basic1/emulator
+CMAKE_CACHEFILE_DIR:INTERNAL=/Users/adolforeyna/Projects/basic1/emulator
 //Major version of cmake used to create the current loaded cache
 CMAKE_CACHE_MAJOR_VERSION:INTERNAL=4
 //Minor version of cmake used to create the current loaded cache
@@ -310,7 +313,7 @@ CMAKE_GENERATOR_PLATFORM:INTERNAL=
 CMAKE_GENERATOR_TOOLSET:INTERNAL=
 //Source directory with the top level CMakeLists.txt file for this
 // project
-CMAKE_HOME_DIRECTORY:INTERNAL=/Users/adolforeyna/Projects/pico-bare-metal/Adolfo/basic1/emulator
+CMAKE_HOME_DIRECTORY:INTERNAL=/Users/adolforeyna/Projects/basic1/emulator
 //ADVANCED property for variable: CMAKE_INSTALL_NAME_TOOL
 CMAKE_INSTALL_NAME_TOOL-ADVANCED:INTERNAL=1
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-# elif defined(__ICC8051__)
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-# else /* unknown architecture */
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-# elif defined(__x86_64__)
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-# else /* unknown architecture */
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-# elif defined(__CPCP__)
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-# else
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-# elif defined(__CCRH__)
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-  ('0' + (((n) / 100000)%10)),   \
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-  'I', 'N', 'F', 'O', ':',
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-
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-  require += info_version[argc];
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-#ifdef SIMULATE_VERSION_MAJOR
-  require += info_simulate_version[argc];
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-#if defined(__CRAYXT_COMPUTE_LINUX_TARGET)
-  require += info_cray[argc];
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-  require += info_language_standard_default[argc];
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-#  define COMPILER_VERSION_PATCH DEC(0)
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-# if defined(__INTEL_COMPILER_BUILD_DATE)
-   /* __INTEL_COMPILER_BUILD_DATE = YYYYMMDD */
-#  define COMPILER_VERSION_TWEAK DEC(__INTEL_COMPILER_BUILD_DATE)
-# endif
-# if defined(_MSC_VER)
-   /* _MSC_VER = VVRR */
-#  define SIMULATE_VERSION_MAJOR DEC(_MSC_VER / 100)
-#  define SIMULATE_VERSION_MINOR DEC(_MSC_VER % 100)
-# endif
-# if defined(__GNUC__)
-#  define SIMULATE_VERSION_MAJOR DEC(__GNUC__)
-# elif defined(__GNUG__)
-#  define SIMULATE_VERSION_MAJOR DEC(__GNUG__)
-# endif
-# if defined(__GNUC_MINOR__)
-#  define SIMULATE_VERSION_MINOR DEC(__GNUC_MINOR__)
-# endif
-# if defined(__GNUC_PATCHLEVEL__)
-#  define SIMULATE_VERSION_PATCH DEC(__GNUC_PATCHLEVEL__)
-# endif
-
-#elif (defined(__clang__) && defined(__INTEL_CLANG_COMPILER)) || defined(__INTEL_LLVM_COMPILER)
-# define COMPILER_ID "IntelLLVM"
-#if defined(_MSC_VER)
-# define SIMULATE_ID "MSVC"
-#endif
-#if defined(__GNUC__)
-# define SIMULATE_ID "GNU"
-#endif
-/* __INTEL_LLVM_COMPILER = VVVVRP prior to 2021.2.0, VVVVRRPP for 2021.2.0 and
- * later.  Look for 6 digit vs. 8 digit version number to decide encoding.
- * VVVV is no smaller than the current year when a version is released.
- */
-#if __INTEL_LLVM_COMPILER < 1000000L
-# define COMPILER_VERSION_MAJOR DEC(__INTEL_LLVM_COMPILER/100)
-# define COMPILER_VERSION_MINOR DEC(__INTEL_LLVM_COMPILER/10 % 10)
-# define COMPILER_VERSION_PATCH DEC(__INTEL_LLVM_COMPILER    % 10)
-#else
-# define COMPILER_VERSION_MAJOR DEC(__INTEL_LLVM_COMPILER/10000)
-# define COMPILER_VERSION_MINOR DEC(__INTEL_LLVM_COMPILER/100 % 100)
-# define COMPILER_VERSION_PATCH DEC(__INTEL_LLVM_COMPILER     % 100)
-#endif
-#if defined(_MSC_VER)
-  /* _MSC_VER = VVRR */
-# define SIMULATE_VERSION_MAJOR DEC(_MSC_VER / 100)
-# define SIMULATE_VERSION_MINOR DEC(_MSC_VER % 100)
-#endif
-#if defined(__GNUC__)
-# define SIMULATE_VERSION_MAJOR DEC(__GNUC__)
-#elif defined(__GNUG__)
-# define SIMULATE_VERSION_MAJOR DEC(__GNUG__)
-#endif
-#if defined(__GNUC_MINOR__)
-# define SIMULATE_VERSION_MINOR DEC(__GNUC_MINOR__)
-#endif
-#if defined(__GNUC_PATCHLEVEL__)
-# define SIMULATE_VERSION_PATCH DEC(__GNUC_PATCHLEVEL__)
-#endif
-
-#elif defined(__PATHCC__)
-# define COMPILER_ID "PathScale"
-# define COMPILER_VERSION_MAJOR DEC(__PATHCC__)
-# define COMPILER_VERSION_MINOR DEC(__PATHCC_MINOR__)
-# if defined(__PATHCC_PATCHLEVEL__)
-#  define COMPILER_VERSION_PATCH DEC(__PATHCC_PATCHLEVEL__)
-# endif
-
-#elif defined(__BORLANDC__) && defined(__CODEGEARC_VERSION__)
-# define COMPILER_ID "Embarcadero"
-# define COMPILER_VERSION_MAJOR HEX(__CODEGEARC_VERSION__>>24 & 0x00FF)
-# define COMPILER_VERSION_MINOR HEX(__CODEGEARC_VERSION__>>16 & 0x00FF)
-# define COMPILER_VERSION_PATCH DEC(__CODEGEARC_VERSION__     & 0xFFFF)
-
-#elif defined(__BORLANDC__)
-# define COMPILER_ID "Borland"
-  /* __BORLANDC__ = 0xVRR */
-# define COMPILER_VERSION_MAJOR HEX(__BORLANDC__>>8)
-# define COMPILER_VERSION_MINOR HEX(__BORLANDC__ & 0xFF)
-
-#elif defined(__WATCOMC__) && __WATCOMC__ < 1200
-# define COMPILER_ID "Watcom"
-   /* __WATCOMC__ = VVRR */
-# define COMPILER_VERSION_MAJOR DEC(__WATCOMC__ / 100)
-# define COMPILER_VERSION_MINOR DEC((__WATCOMC__ / 10) % 10)
-# if (__WATCOMC__ % 10) > 0
-#  define COMPILER_VERSION_PATCH DEC(__WATCOMC__ % 10)
-# endif
-
-#elif defined(__WATCOMC__)
-# define COMPILER_ID "OpenWatcom"
-   /* __WATCOMC__ = VVRP + 1100 */
-# define COMPILER_VERSION_MAJOR DEC((__WATCOMC__ - 1100) / 100)
-# define COMPILER_VERSION_MINOR DEC((__WATCOMC__ / 10) % 10)
-# if (__WATCOMC__ % 10) > 0
-#  define COMPILER_VERSION_PATCH DEC(__WATCOMC__ % 10)
-# endif
-
-#elif defined(__SUNPRO_CC)
-# define COMPILER_ID "SunPro"
-# if __SUNPRO_CC >= 0x5100
-   /* __SUNPRO_CC = 0xVRRP */
-#  define COMPILER_VERSION_MAJOR HEX(__SUNPRO_CC>>12)
-#  define COMPILER_VERSION_MINOR HEX(__SUNPRO_CC>>4 & 0xFF)
-#  define COMPILER_VERSION_PATCH HEX(__SUNPRO_CC    & 0xF)
-# else
-   /* __SUNPRO_CC = 0xVRP */
-#  define COMPILER_VERSION_MAJOR HEX(__SUNPRO_CC>>8)
-#  define COMPILER_VERSION_MINOR HEX(__SUNPRO_CC>>4 & 0xF)
-#  define COMPILER_VERSION_PATCH HEX(__SUNPRO_CC    & 0xF)
-# endif
-
-#elif defined(__HP_aCC)
-# define COMPILER_ID "HP"
-  /* __HP_aCC = VVRRPP */
-# define COMPILER_VERSION_MAJOR DEC(__HP_aCC/10000)
-# define COMPILER_VERSION_MINOR DEC(__HP_aCC/100 % 100)
-# define COMPILER_VERSION_PATCH DEC(__HP_aCC     % 100)
-
-#elif defined(__DECCXX)
-# define COMPILER_ID "Compaq"
-  /* __DECCXX_VER = VVRRTPPPP */
-# define COMPILER_VERSION_MAJOR DEC(__DECCXX_VER/10000000)
-# define COMPILER_VERSION_MINOR DEC(__DECCXX_VER/100000  % 100)
-# define COMPILER_VERSION_PATCH DEC(__DECCXX_VER         % 10000)
-
-#elif defined(__IBMCPP__) && defined(__COMPILER_VER__)
-# define COMPILER_ID "zOS"
-  /* __IBMCPP__ = VRP */
-# define COMPILER_VERSION_MAJOR DEC(__IBMCPP__/100)
-# define COMPILER_VERSION_MINOR DEC(__IBMCPP__/10 % 10)
-# define COMPILER_VERSION_PATCH DEC(__IBMCPP__    % 10)
-
-#elif defined(__open_xl__) && defined(__clang__)
-# define COMPILER_ID "IBMClang"
-# define COMPILER_VERSION_MAJOR DEC(__open_xl_version__)
-# define COMPILER_VERSION_MINOR DEC(__open_xl_release__)
-# define COMPILER_VERSION_PATCH DEC(__open_xl_modification__)
-# define COMPILER_VERSION_TWEAK DEC(__open_xl_ptf_fix_level__)
-# define COMPILER_VERSION_INTERNAL_STR  __clang_version__
-
-
-#elif defined(__ibmxl__) && defined(__clang__)
-# define COMPILER_ID "XLClang"
-# define COMPILER_VERSION_MAJOR DEC(__ibmxl_version__)
-# define COMPILER_VERSION_MINOR DEC(__ibmxl_release__)
-# define COMPILER_VERSION_PATCH DEC(__ibmxl_modification__)
-# define COMPILER_VERSION_TWEAK DEC(__ibmxl_ptf_fix_level__)
-
-
-#elif defined(__IBMCPP__) && !defined(__COMPILER_VER__) && __IBMCPP__ >= 800
-# define COMPILER_ID "XL"
-  /* __IBMCPP__ = VRP */
-# define COMPILER_VERSION_MAJOR DEC(__IBMCPP__/100)
-# define COMPILER_VERSION_MINOR DEC(__IBMCPP__/10 % 10)
-# define COMPILER_VERSION_PATCH DEC(__IBMCPP__    % 10)
-
-#elif defined(__IBMCPP__) && !defined(__COMPILER_VER__) && __IBMCPP__ < 800
-# define COMPILER_ID "VisualAge"
-  /* __IBMCPP__ = VRP */
-# define COMPILER_VERSION_MAJOR DEC(__IBMCPP__/100)
-# define COMPILER_VERSION_MINOR DEC(__IBMCPP__/10 % 10)
-# define COMPILER_VERSION_PATCH DEC(__IBMCPP__    % 10)
-
-#elif defined(__NVCOMPILER)
-# define COMPILER_ID "NVHPC"
-# define COMPILER_VERSION_MAJOR DEC(__NVCOMPILER_MAJOR__)
-# define COMPILER_VERSION_MINOR DEC(__NVCOMPILER_MINOR__)
-# if defined(__NVCOMPILER_PATCHLEVEL__)
-#  define COMPILER_VERSION_PATCH DEC(__NVCOMPILER_PATCHLEVEL__)
-# endif
-
-#elif defined(__PGI)
-# define COMPILER_ID "PGI"
-# define COMPILER_VERSION_MAJOR DEC(__PGIC__)
-# define COMPILER_VERSION_MINOR DEC(__PGIC_MINOR__)
-# if defined(__PGIC_PATCHLEVEL__)
-#  define COMPILER_VERSION_PATCH DEC(__PGIC_PATCHLEVEL__)
-# endif
-
-#elif defined(__clang__) && defined(__cray__)
-# define COMPILER_ID "CrayClang"
-# define COMPILER_VERSION_MAJOR DEC(__cray_major__)
-# define COMPILER_VERSION_MINOR DEC(__cray_minor__)
-# define COMPILER_VERSION_PATCH DEC(__cray_patchlevel__)
-# define COMPILER_VERSION_INTERNAL_STR __clang_version__
-
-
-#elif defined(_CRAYC)
-# define COMPILER_ID "Cray"
-# define COMPILER_VERSION_MAJOR DEC(_RELEASE_MAJOR)
-# define COMPILER_VERSION_MINOR DEC(_RELEASE_MINOR)
-
-#elif defined(__TI_COMPILER_VERSION__)
-# define COMPILER_ID "TI"
-  /* __TI_COMPILER_VERSION__ = VVVRRRPPP */
-# define COMPILER_VERSION_MAJOR DEC(__TI_COMPILER_VERSION__/1000000)
-# define COMPILER_VERSION_MINOR DEC(__TI_COMPILER_VERSION__/1000   % 1000)
-# define COMPILER_VERSION_PATCH DEC(__TI_COMPILER_VERSION__        % 1000)
-
-#elif defined(__CLANG_FUJITSU)
-# define COMPILER_ID "FujitsuClang"
-# define COMPILER_VERSION_MAJOR DEC(__FCC_major__)
-# define COMPILER_VERSION_MINOR DEC(__FCC_minor__)
-# define COMPILER_VERSION_PATCH DEC(__FCC_patchlevel__)
-# define COMPILER_VERSION_INTERNAL_STR __clang_version__
-
-
-#elif defined(__FUJITSU)
-# define COMPILER_ID "Fujitsu"
-# if defined(__FCC_version__)
-#   define COMPILER_VERSION __FCC_version__
-# elif defined(__FCC_major__)
-#   define COMPILER_VERSION_MAJOR DEC(__FCC_major__)
-#   define COMPILER_VERSION_MINOR DEC(__FCC_minor__)
-#   define COMPILER_VERSION_PATCH DEC(__FCC_patchlevel__)
-# endif
-# if defined(__fcc_version)
-#   define COMPILER_VERSION_INTERNAL DEC(__fcc_version)
-# elif defined(__FCC_VERSION)
-#   define COMPILER_VERSION_INTERNAL DEC(__FCC_VERSION)
-# endif
-
-
-#elif defined(__ghs__)
-# define COMPILER_ID "GHS"
-/* __GHS_VERSION_NUMBER = VVVVRP */
-# ifdef __GHS_VERSION_NUMBER
-# define COMPILER_VERSION_MAJOR DEC(__GHS_VERSION_NUMBER / 100)
-# define COMPILER_VERSION_MINOR DEC(__GHS_VERSION_NUMBER / 10 % 10)
-# define COMPILER_VERSION_PATCH DEC(__GHS_VERSION_NUMBER      % 10)
-# endif
-
-#elif defined(__TASKING__)
-# define COMPILER_ID "Tasking"
-  # define COMPILER_VERSION_MAJOR DEC(__VERSION__/1000)
-  # define COMPILER_VERSION_MINOR DEC(__VERSION__ % 100)
-# define COMPILER_VERSION_INTERNAL DEC(__VERSION__)
-
-#elif defined(__ORANGEC__)
-# define COMPILER_ID "OrangeC"
-# define COMPILER_VERSION_MAJOR DEC(__ORANGEC_MAJOR__)
-# define COMPILER_VERSION_MINOR DEC(__ORANGEC_MINOR__)
-# define COMPILER_VERSION_PATCH DEC(__ORANGEC_PATCHLEVEL__)
-
-#elif defined(__RENESAS__)
-# define COMPILER_ID "Renesas"
-/* __RENESAS_VERSION__ = 0xVVRRPP00 */
-# define COMPILER_VERSION_MAJOR HEX(__RENESAS_VERSION__ >> 24 & 0xFF)
-# define COMPILER_VERSION_MINOR HEX(__RENESAS_VERSION__ >> 16 & 0xFF)
-# define COMPILER_VERSION_PATCH HEX(__RENESAS_VERSION__ >> 8  & 0xFF)
-
-#elif defined(__SCO_VERSION__)
-# define COMPILER_ID "SCO"
-
-#elif defined(__ARMCC_VERSION) && !defined(__clang__)
-# define COMPILER_ID "ARMCC"
-#if __ARMCC_VERSION >= 1000000
-  /* __ARMCC_VERSION = VRRPPPP */
-  # define COMPILER_VERSION_MAJOR DEC(__ARMCC_VERSION/1000000)
-  # define COMPILER_VERSION_MINOR DEC(__ARMCC_VERSION/10000 % 100)
-  # define COMPILER_VERSION_PATCH DEC(__ARMCC_VERSION     % 10000)
-#else
-  /* __ARMCC_VERSION = VRPPPP */
-  # define COMPILER_VERSION_MAJOR DEC(__ARMCC_VERSION/100000)
-  # define COMPILER_VERSION_MINOR DEC(__ARMCC_VERSION/10000 % 10)
-  # define COMPILER_VERSION_PATCH DEC(__ARMCC_VERSION    % 10000)
-#endif
-
-
-#elif defined(__clang__) && defined(__apple_build_version__)
-# define COMPILER_ID "AppleClang"
-# if defined(_MSC_VER)
-#  define SIMULATE_ID "MSVC"
-# endif
-# define COMPILER_VERSION_MAJOR DEC(__clang_major__)
-# define COMPILER_VERSION_MINOR DEC(__clang_minor__)
-# define COMPILER_VERSION_PATCH DEC(__clang_patchlevel__)
-# if defined(_MSC_VER)
-   /* _MSC_VER = VVRR */
-#  define SIMULATE_VERSION_MAJOR DEC(_MSC_VER / 100)
-#  define SIMULATE_VERSION_MINOR DEC(_MSC_VER % 100)
-# endif
-# define COMPILER_VERSION_TWEAK DEC(__apple_build_version__)
-
-#elif defined(__clang__) && defined(__ARMCOMPILER_VERSION)
-# define COMPILER_ID "ARMClang"
-  # define COMPILER_VERSION_MAJOR DEC(__ARMCOMPILER_VERSION/1000000)
-  # define COMPILER_VERSION_MINOR DEC(__ARMCOMPILER_VERSION/10000 % 100)
-  # define COMPILER_VERSION_PATCH DEC(__ARMCOMPILER_VERSION/100   % 100)
-# define COMPILER_VERSION_INTERNAL DEC(__ARMCOMPILER_VERSION)
-
-#elif defined(__clang__) && defined(__ti__)
-# define COMPILER_ID "TIClang"
-  # define COMPILER_VERSION_MAJOR DEC(__ti_major__)
-  # define COMPILER_VERSION_MINOR DEC(__ti_minor__)
-  # define COMPILER_VERSION_PATCH DEC(__ti_patchlevel__)
-# define COMPILER_VERSION_INTERNAL DEC(__ti_version__)
-
-#elif defined(__clang__)
-# define COMPILER_ID "Clang"
-# if defined(_MSC_VER)
-#  define SIMULATE_ID "MSVC"
-# endif
-# define COMPILER_VERSION_MAJOR DEC(__clang_major__)
-# define COMPILER_VERSION_MINOR DEC(__clang_minor__)
-# define COMPILER_VERSION_PATCH DEC(__clang_patchlevel__)
-# if defined(_MSC_VER)
-   /* _MSC_VER = VVRR */
-#  define SIMULATE_VERSION_MAJOR DEC(_MSC_VER / 100)
-#  define SIMULATE_VERSION_MINOR DEC(_MSC_VER % 100)
-# endif
-
-#elif defined(__LCC__) && (defined(__GNUC__) || defined(__GNUG__) || defined(__MCST__))
-# define COMPILER_ID "LCC"
-# define COMPILER_VERSION_MAJOR DEC(__LCC__ / 100)
-# define COMPILER_VERSION_MINOR DEC(__LCC__ % 100)
-# if defined(__LCC_MINOR__)
-#  define COMPILER_VERSION_PATCH DEC(__LCC_MINOR__)
-# endif
-# if defined(__GNUC__) && defined(__GNUC_MINOR__)
-#  define SIMULATE_ID "GNU"
-#  define SIMULATE_VERSION_MAJOR DEC(__GNUC__)
-#  define SIMULATE_VERSION_MINOR DEC(__GNUC_MINOR__)
-#  if defined(__GNUC_PATCHLEVEL__)
-#   define SIMULATE_VERSION_PATCH DEC(__GNUC_PATCHLEVEL__)
-#  endif
-# endif
-
-#elif defined(__GNUC__) || defined(__GNUG__)
-# define COMPILER_ID "GNU"
-# if defined(__GNUC__)
-#  define COMPILER_VERSION_MAJOR DEC(__GNUC__)
-# else
-#  define COMPILER_VERSION_MAJOR DEC(__GNUG__)
-# endif
-# if defined(__GNUC_MINOR__)
-#  define COMPILER_VERSION_MINOR DEC(__GNUC_MINOR__)
-# endif
-# if defined(__GNUC_PATCHLEVEL__)
-#  define COMPILER_VERSION_PATCH DEC(__GNUC_PATCHLEVEL__)
-# endif
-
-#elif defined(_MSC_VER)
-# define COMPILER_ID "MSVC"
-  /* _MSC_VER = VVRR */
-# define COMPILER_VERSION_MAJOR DEC(_MSC_VER / 100)
-# define COMPILER_VERSION_MINOR DEC(_MSC_VER % 100)
-# if defined(_MSC_FULL_VER)
-#  if _MSC_VER >= 1400
-    /* _MSC_FULL_VER = VVRRPPPPP */
-#   define COMPILER_VERSION_PATCH DEC(_MSC_FULL_VER % 100000)
-#  else
-    /* _MSC_FULL_VER = VVRRPPPP */
-#   define COMPILER_VERSION_PATCH DEC(_MSC_FULL_VER % 10000)
-#  endif
-# endif
-# if defined(_MSC_BUILD)
-#  define COMPILER_VERSION_TWEAK DEC(_MSC_BUILD)
-# endif
-
-#elif defined(_ADI_COMPILER)
-# define COMPILER_ID "ADSP"
-#if defined(__VERSIONNUM__)
-  /* __VERSIONNUM__ = 0xVVRRPPTT */
-#  define COMPILER_VERSION_MAJOR DEC(__VERSIONNUM__ >> 24 & 0xFF)
-#  define COMPILER_VERSION_MINOR DEC(__VERSIONNUM__ >> 16 & 0xFF)
-#  define COMPILER_VERSION_PATCH DEC(__VERSIONNUM__ >> 8 & 0xFF)
-#  define COMPILER_VERSION_TWEAK DEC(__VERSIONNUM__ & 0xFF)
-#endif
-
-#elif defined(__IAR_SYSTEMS_ICC__) || defined(__IAR_SYSTEMS_ICC)
-# define COMPILER_ID "IAR"
-# if defined(__VER__) && defined(__ICCARM__)
-#  define COMPILER_VERSION_MAJOR DEC((__VER__) / 1000000)
-#  define COMPILER_VERSION_MINOR DEC(((__VER__) / 1000) % 1000)
-#  define COMPILER_VERSION_PATCH DEC((__VER__) % 1000)
-#  define COMPILER_VERSION_INTERNAL DEC(__IAR_SYSTEMS_ICC__)
-# elif defined(__VER__) && (defined(__ICCAVR__) || defined(__ICCRX__) || defined(__ICCRH850__) || defined(__ICCRL78__) || defined(__ICC430__) || defined(__ICCRISCV__) || defined(__ICCV850__) || defined(__ICC8051__) || defined(__ICCSTM8__))
-#  define COMPILER_VERSION_MAJOR DEC((__VER__) / 100)
-#  define COMPILER_VERSION_MINOR DEC((__VER__) - (((__VER__) / 100)*100))
-#  define COMPILER_VERSION_PATCH DEC(__SUBVERSION__)
-#  define COMPILER_VERSION_INTERNAL DEC(__IAR_SYSTEMS_ICC__)
-# endif
-
-#elif defined(__DCC__) && defined(_DIAB_TOOL)
-# define COMPILER_ID "Diab"
-  # define COMPILER_VERSION_MAJOR DEC(__VERSION_MAJOR_NUMBER__)
-  # define COMPILER_VERSION_MINOR DEC(__VERSION_MINOR_NUMBER__)
-  # define COMPILER_VERSION_PATCH DEC(__VERSION_ARCH_FEATURE_NUMBER__)
-  # define COMPILER_VERSION_TWEAK DEC(__VERSION_BUG_FIX_NUMBER__)
-
-
-
-/* These compilers are either not known or too old to define an
-  identification macro.  Try to identify the platform and guess that
-  it is the native compiler.  */
-#elif defined(__hpux) || defined(__hpua)
-# define COMPILER_ID "HP"
-
-#else /* unknown compiler */
-# define COMPILER_ID ""
-#endif
-
-/* Construct the string literal in pieces to prevent the source from
-   getting matched.  Store it in a pointer rather than an array
-   because some compilers will just produce instructions to fill the
-   array rather than assigning a pointer to a static array.  */
-char const* info_compiler = "INFO" ":" "compiler[" COMPILER_ID "]";
-#ifdef SIMULATE_ID
-char const* info_simulate = "INFO" ":" "simulate[" SIMULATE_ID "]";
-#endif
-
-#ifdef __QNXNTO__
-char const* qnxnto = "INFO" ":" "qnxnto[]";
-#endif
-
-#if defined(__CRAYXT_COMPUTE_LINUX_TARGET)
-char const *info_cray = "INFO" ":" "compiler_wrapper[CrayPrgEnv]";
-#endif
-
-#define STRINGIFY_HELPER(X) #X
-#define STRINGIFY(X) STRINGIFY_HELPER(X)
-
-/* Identify known platforms by name.  */
-#if defined(__linux) || defined(__linux__) || defined(linux)
-# define PLATFORM_ID "Linux"
-
-#elif defined(__MSYS__)
-# define PLATFORM_ID "MSYS"
-
-#elif defined(__CYGWIN__)
-# define PLATFORM_ID "Cygwin"
-
-#elif defined(__MINGW32__)
-# define PLATFORM_ID "MinGW"
-
-#elif defined(__APPLE__)
-# define PLATFORM_ID "Darwin"
-
-#elif defined(_WIN32) || defined(__WIN32__) || defined(WIN32)
-# define PLATFORM_ID "Windows"
-
-#elif defined(__FreeBSD__) || defined(__FreeBSD)
-# define PLATFORM_ID "FreeBSD"
-
-#elif defined(__NetBSD__) || defined(__NetBSD)
-# define PLATFORM_ID "NetBSD"
-
-#elif defined(__OpenBSD__) || defined(__OPENBSD)
-# define PLATFORM_ID "OpenBSD"
-
-#elif defined(__sun) || defined(sun)
-# define PLATFORM_ID "SunOS"
-
-#elif defined(_AIX) || defined(__AIX) || defined(__AIX__) || defined(__aix) || defined(__aix__)
-# define PLATFORM_ID "AIX"
-
-#elif defined(__hpux) || defined(__hpux__)
-# define PLATFORM_ID "HP-UX"
-
-#elif defined(__HAIKU__)
-# define PLATFORM_ID "Haiku"
-
-#elif defined(__BeOS) || defined(__BEOS__) || defined(_BEOS)
-# define PLATFORM_ID "BeOS"
-
-#elif defined(__QNX__) || defined(__QNXNTO__)
-# define PLATFORM_ID "QNX"
-
-#elif defined(__tru64) || defined(_tru64) || defined(__TRU64__)
-# define PLATFORM_ID "Tru64"
-
-#elif defined(__riscos) || defined(__riscos__)
-# define PLATFORM_ID "RISCos"
-
-#elif defined(__sinix) || defined(__sinix__) || defined(__SINIX__)
-# define PLATFORM_ID "SINIX"
-
-#elif defined(__UNIX_SV__)
-# define PLATFORM_ID "UNIX_SV"
-
-#elif defined(__bsdos__)
-# define PLATFORM_ID "BSDOS"
-
-#elif defined(_MPRAS) || defined(MPRAS)
-# define PLATFORM_ID "MP-RAS"
-
-#elif defined(__osf) || defined(__osf__)
-# define PLATFORM_ID "OSF1"
-
-#elif defined(_SCO_SV) || defined(SCO_SV) || defined(sco_sv)
-# define PLATFORM_ID "SCO_SV"
-
-#elif defined(__ultrix) || defined(__ultrix__) || defined(_ULTRIX)
-# define PLATFORM_ID "ULTRIX"
-
-#elif defined(__XENIX__) || defined(_XENIX) || defined(XENIX)
-# define PLATFORM_ID "Xenix"
-
-#elif defined(__WATCOMC__)
-# if defined(__LINUX__)
-#  define PLATFORM_ID "Linux"
-
-# elif defined(__DOS__)
-#  define PLATFORM_ID "DOS"
-
-# elif defined(__OS2__)
-#  define PLATFORM_ID "OS2"
-
-# elif defined(__WINDOWS__)
-#  define PLATFORM_ID "Windows3x"
-
-# elif defined(__VXWORKS__)
-#  define PLATFORM_ID "VxWorks"
-
-# else /* unknown platform */
-#  define PLATFORM_ID
-# endif
-
-#elif defined(__INTEGRITY)
-# if defined(INT_178B)
-#  define PLATFORM_ID "Integrity178"
-
-# else /* regular Integrity */
-#  define PLATFORM_ID "Integrity"
-# endif
-
-# elif defined(_ADI_COMPILER)
-#  define PLATFORM_ID "ADSP"
-
-#else /* unknown platform */
-# define PLATFORM_ID
-
-#endif
-
-/* For windows compilers MSVC and Intel we can determine
-   the architecture of the compiler being used.  This is because
-   the compilers do not have flags that can change the architecture,
-   but rather depend on which compiler is being used
-*/
-#if defined(_WIN32) && defined(_MSC_VER)
-# if defined(_M_IA64)
-#  define ARCHITECTURE_ID "IA64"
-
-# elif defined(_M_ARM64EC)
-#  define ARCHITECTURE_ID "ARM64EC"
-
-# elif defined(_M_X64) || defined(_M_AMD64)
-#  define ARCHITECTURE_ID "x64"
-
-# elif defined(_M_IX86)
-#  define ARCHITECTURE_ID "X86"
-
-# elif defined(_M_ARM64)
-#  define ARCHITECTURE_ID "ARM64"
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-
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-
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-#  define ARCHITECTURE_ID "X86"
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-#  define ARCHITECTURE_ID ""
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-
-#elif defined(__IAR_SYSTEMS_ICC__) || defined(__IAR_SYSTEMS_ICC)
-# if defined(__ICCARM__)
-#  define ARCHITECTURE_ID "ARM"
-
-# elif defined(__ICCRX__)
-#  define ARCHITECTURE_ID "RX"
-
-# elif defined(__ICCRH850__)
-#  define ARCHITECTURE_ID "RH850"
-
-# elif defined(__ICCRL78__)
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-
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-#  define ARCHITECTURE_ID "RISCV"
-
-# elif defined(__ICCAVR__)
-#  define ARCHITECTURE_ID "AVR"
-
-# elif defined(__ICC430__)
-#  define ARCHITECTURE_ID "MSP430"
-
-# elif defined(__ICCV850__)
-#  define ARCHITECTURE_ID "V850"
-
-# elif defined(__ICC8051__)
-#  define ARCHITECTURE_ID "8051"
-
-# elif defined(__ICCSTM8__)
-#  define ARCHITECTURE_ID "STM8"
-
-# else /* unknown architecture */
-#  define ARCHITECTURE_ID ""
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-
-#elif defined(__ghs__)
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-#  define ARCHITECTURE_ID "PPC64"
-
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-
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-#  define ARCHITECTURE_ID "ARM"
-
-# elif defined(__x86_64__)
-#  define ARCHITECTURE_ID "x64"
-
-# elif defined(__i386__)
-#  define ARCHITECTURE_ID "X86"
-
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-#  define ARCHITECTURE_ID "ARM"
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-#  define ARCHITECTURE_ID "ARM"
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-#  define ARCHITECTURE_ID "MSP430"
-
-# elif defined(__TMS320C28XX__)
-#  define ARCHITECTURE_ID "TMS320C28x"
-
-# elif defined(__TMS320C6X__) || defined(_TMS320C6X)
-#  define ARCHITECTURE_ID "TMS320C6x"
-
-# else /* unknown architecture */
-#  define ARCHITECTURE_ID ""
-# endif
-
-# elif defined(__ADSPSHARC__)
-#  define ARCHITECTURE_ID "SHARC"
-
-# elif defined(__ADSPBLACKFIN__)
-#  define ARCHITECTURE_ID "Blackfin"
-
-#elif defined(__TASKING__)
-
-# if defined(__CTC__) || defined(__CPTC__)
-#  define ARCHITECTURE_ID "TriCore"
-
-# elif defined(__CMCS__)
-#  define ARCHITECTURE_ID "MCS"
-
-# elif defined(__CARM__) || defined(__CPARM__)
-#  define ARCHITECTURE_ID "ARM"
-
-# elif defined(__CARC__)
-#  define ARCHITECTURE_ID "ARC"
-
-# elif defined(__C51__)
-#  define ARCHITECTURE_ID "8051"
-
-# elif defined(__CPCP__)
-#  define ARCHITECTURE_ID "PCP"
-
-# else
-#  define ARCHITECTURE_ID ""
-# endif
-
-#elif defined(__RENESAS__)
-# if defined(__CCRX__)
-#  define ARCHITECTURE_ID "RX"
-
-# elif defined(__CCRL__)
-#  define ARCHITECTURE_ID "RL78"
-
-# elif defined(__CCRH__)
-#  define ARCHITECTURE_ID "RH850"
-
-# else
-#  define ARCHITECTURE_ID ""
-# endif
-
-#else
-#  define ARCHITECTURE_ID
-#endif
-
-/* Convert integer to decimal digit literals.  */
-#define DEC(n)                   \
-  ('0' + (((n) / 10000000)%10)), \
-  ('0' + (((n) / 1000000)%10)),  \
-  ('0' + (((n) / 100000)%10)),   \
-  ('0' + (((n) / 10000)%10)),    \
-  ('0' + (((n) / 1000)%10)),     \
-  ('0' + (((n) / 100)%10)),      \
-  ('0' + (((n) / 10)%10)),       \
-  ('0' +  ((n) % 10))
-
-/* Convert integer to hex digit literals.  */
-#define HEX(n)             \
-  ('0' + ((n)>>28 & 0xF)), \
-  ('0' + ((n)>>24 & 0xF)), \
-  ('0' + ((n)>>20 & 0xF)), \
-  ('0' + ((n)>>16 & 0xF)), \
-  ('0' + ((n)>>12 & 0xF)), \
-  ('0' + ((n)>>8  & 0xF)), \
-  ('0' + ((n)>>4  & 0xF)), \
-  ('0' + ((n)     & 0xF))
-
-/* Construct a string literal encoding the version number. */
-#ifdef COMPILER_VERSION
-char const* info_version = "INFO" ":" "compiler_version[" COMPILER_VERSION "]";
-
-/* Construct a string literal encoding the version number components. */
-#elif defined(COMPILER_VERSION_MAJOR)
-char const info_version[] = {
-  'I', 'N', 'F', 'O', ':',
-  'c','o','m','p','i','l','e','r','_','v','e','r','s','i','o','n','[',
-  COMPILER_VERSION_MAJOR,
-# ifdef COMPILER_VERSION_MINOR
-  '.', COMPILER_VERSION_MINOR,
-#  ifdef COMPILER_VERSION_PATCH
-   '.', COMPILER_VERSION_PATCH,
-#   ifdef COMPILER_VERSION_TWEAK
-    '.', COMPILER_VERSION_TWEAK,
-#   endif
-#  endif
-# endif
-  ']','\0'};
-#endif
-
-/* Construct a string literal encoding the internal version number. */
-#ifdef COMPILER_VERSION_INTERNAL
-char const info_version_internal[] = {
-  'I', 'N', 'F', 'O', ':',
-  'c','o','m','p','i','l','e','r','_','v','e','r','s','i','o','n','_',
-  'i','n','t','e','r','n','a','l','[',
-  COMPILER_VERSION_INTERNAL,']','\0'};
-#elif defined(COMPILER_VERSION_INTERNAL_STR)
-char const* info_version_internal = "INFO" ":" "compiler_version_internal[" COMPILER_VERSION_INTERNAL_STR "]";
-#endif
-
-/* Construct a string literal encoding the version number components. */
-#ifdef SIMULATE_VERSION_MAJOR
-char const info_simulate_version[] = {
-  'I', 'N', 'F', 'O', ':',
-  's','i','m','u','l','a','t','e','_','v','e','r','s','i','o','n','[',
-  SIMULATE_VERSION_MAJOR,
-# ifdef SIMULATE_VERSION_MINOR
-  '.', SIMULATE_VERSION_MINOR,
-#  ifdef SIMULATE_VERSION_PATCH
-   '.', SIMULATE_VERSION_PATCH,
-#   ifdef SIMULATE_VERSION_TWEAK
-    '.', SIMULATE_VERSION_TWEAK,
-#   endif
-#  endif
-# endif
-  ']','\0'};
-#endif
-
-/* Construct the string literal in pieces to prevent the source from
-   getting matched.  Store it in a pointer rather than an array
-   because some compilers will just produce instructions to fill the
-   array rather than assigning a pointer to a static array.  */
-char const* info_platform = "INFO" ":" "platform[" PLATFORM_ID "]";
-char const* info_arch = "INFO" ":" "arch[" ARCHITECTURE_ID "]";
-
-
-
-#define CXX_STD_98 199711L
-#define CXX_STD_11 201103L
-#define CXX_STD_14 201402L
-#define CXX_STD_17 201703L
-#define CXX_STD_20 202002L
-#define CXX_STD_23 202302L
-
-#if defined(__INTEL_COMPILER) && defined(_MSVC_LANG)
-#  if _MSVC_LANG > CXX_STD_17
-#    define CXX_STD _MSVC_LANG
-#  elif _MSVC_LANG == CXX_STD_17 && defined(__cpp_aggregate_paren_init)
-#    define CXX_STD CXX_STD_20
-#  elif _MSVC_LANG > CXX_STD_14 && __cplusplus > CXX_STD_17
-#    define CXX_STD CXX_STD_20
-#  elif _MSVC_LANG > CXX_STD_14
-#    define CXX_STD CXX_STD_17
-#  elif defined(__INTEL_CXX11_MODE__) && defined(__cpp_aggregate_nsdmi)
-#    define CXX_STD CXX_STD_14
-#  elif defined(__INTEL_CXX11_MODE__)
-#    define CXX_STD CXX_STD_11
-#  else
-#    define CXX_STD CXX_STD_98
-#  endif
-#elif defined(_MSC_VER) && defined(_MSVC_LANG)
-#  if _MSVC_LANG > __cplusplus
-#    define CXX_STD _MSVC_LANG
-#  else
-#    define CXX_STD __cplusplus
-#  endif
-#elif defined(__NVCOMPILER)
-#  if __cplusplus == CXX_STD_17 && defined(__cpp_aggregate_paren_init)
-#    define CXX_STD CXX_STD_20
-#  else
-#    define CXX_STD __cplusplus
-#  endif
-#elif defined(__INTEL_COMPILER) || defined(__PGI)
-#  if __cplusplus == CXX_STD_11 && defined(__cpp_namespace_attributes)
-#    define CXX_STD CXX_STD_17
-#  elif __cplusplus == CXX_STD_11 && defined(__cpp_aggregate_nsdmi)
-#    define CXX_STD CXX_STD_14
-#  else
-#    define CXX_STD __cplusplus
-#  endif
-#elif (defined(__IBMCPP__) || defined(__ibmxl__)) && defined(__linux__)
-#  if __cplusplus == CXX_STD_11 && defined(__cpp_aggregate_nsdmi)
-#    define CXX_STD CXX_STD_14
-#  else
-#    define CXX_STD __cplusplus
-#  endif
-#elif __cplusplus == 1 && defined(__GXX_EXPERIMENTAL_CXX0X__)
-#  define CXX_STD CXX_STD_11
-#else
-#  define CXX_STD __cplusplus
-#endif
-
-const char* info_language_standard_default = "INFO" ":" "standard_default["
-#if CXX_STD > CXX_STD_23
-  "26"
-#elif CXX_STD > CXX_STD_20
-  "23"
-#elif CXX_STD > CXX_STD_17
-  "20"
-#elif CXX_STD > CXX_STD_14
-  "17"
-#elif CXX_STD > CXX_STD_11
-  "14"
-#elif CXX_STD >= CXX_STD_11
-  "11"
-#else
-  "98"
-#endif
-"]";
-
-const char* info_language_extensions_default = "INFO" ":" "extensions_default["
-#if (defined(__clang__) || defined(__GNUC__) || defined(__xlC__) ||           \
-     defined(__TI_COMPILER_VERSION__) || defined(__RENESAS__)) &&             \
-  !defined(__STRICT_ANSI__)
-  "ON"
-#else
-  "OFF"
-#endif
-"]";
-
-/*--------------------------------------------------------------------------*/
-
-int main(int argc, char* argv[])
-{
-  int require = 0;
-  require += info_compiler[argc];
-  require += info_platform[argc];
-  require += info_arch[argc];
-#ifdef COMPILER_VERSION_MAJOR
-  require += info_version[argc];
-#endif
-#if defined(COMPILER_VERSION_INTERNAL) || defined(COMPILER_VERSION_INTERNAL_STR)
-  require += info_version_internal[argc];
-#endif
-#ifdef SIMULATE_ID
-  require += info_simulate[argc];
-#endif
-#ifdef SIMULATE_VERSION_MAJOR
-  require += info_simulate_version[argc];
-#endif
-#if defined(__CRAYXT_COMPUTE_LINUX_TARGET)
-  require += info_cray[argc];
-#endif
-  require += info_language_standard_default[argc];
-  require += info_language_extensions_default[argc];
-  (void)argv;
-  return require;
-}

emulator/CMakeFiles/4.2.3/CompilerIdCXX/apple-sdk.cpp

@@ -1 +0,0 @@
-#include <AvailabilityMacros.h>

emulator/CMakeFiles/cmake.check_cache

@@ -1 +0,0 @@
-# This file is generated by cmake for dependency checking of the CMakeCache.txt file

emulator/CMakeLists.txt

@@ -41,3 +41,22 @@ target_compile_definitions(basic1_emulator PRIVATE LUA_32BITS=1)
 target_include_directories(basic1_emulator PRIVATE . .. ../display ../fonts ../games ../lib ../lib/lua)
 
 target_link_libraries(basic1_emulator SFML::Graphics SFML::Window SFML::System)
+
+# Copy Lua example files to build directory
+file(GLOB LUA_EXAMPLE_FILES "../games/lua_examples/*.lua")
+foreach(LUA_FILE ${LUA_EXAMPLE_FILES})
+    get_filename_component(FILENAME ${LUA_FILE} NAME)
+    add_custom_command(TARGET basic1_emulator POST_BUILD
+        COMMAND ${CMAKE_COMMAND} -E copy
+        ${LUA_FILE}
+        ${CMAKE_CURRENT_BINARY_DIR}/games/lua_examples/${FILENAME}
+        COMMENT "Copying Lua example: ${FILENAME}"
+    )
+endforeach()
+
+# Also ensure directory exists
+add_custom_command(TARGET basic1_emulator POST_BUILD
+    COMMAND ${CMAKE_COMMAND} -E make_directory
+    ${CMAKE_CURRENT_BINARY_DIR}/games/lua_examples
+    COMMENT "Creating games/lua_examples directory"
+)

emulator/cmake_install.cmake

@@ -0,0 +1,61 @@
+# Install script for directory: /Users/adolforeyna/Projects/basic1/emulator
+
+# Set the install prefix
+if(NOT DEFINED CMAKE_INSTALL_PREFIX)
+  set(CMAKE_INSTALL_PREFIX "/usr/local")
+endif()
+string(REGEX REPLACE "/$" "" CMAKE_INSTALL_PREFIX "${CMAKE_INSTALL_PREFIX}")
+
+# Set the install configuration name.
+if(NOT DEFINED CMAKE_INSTALL_CONFIG_NAME)
+  if(BUILD_TYPE)
+    string(REGEX REPLACE "^[^A-Za-z0-9_]+" ""
+           CMAKE_INSTALL_CONFIG_NAME "${BUILD_TYPE}")
+  else()
+    set(CMAKE_INSTALL_CONFIG_NAME "")
+  endif()
+  message(STATUS "Install configuration: \"${CMAKE_INSTALL_CONFIG_NAME}\"")
+endif()
+
+# Set the component getting installed.
+if(NOT CMAKE_INSTALL_COMPONENT)
+  if(COMPONENT)
+    message(STATUS "Install component: \"${COMPONENT}\"")
+    set(CMAKE_INSTALL_COMPONENT "${COMPONENT}")
+  else()
+    set(CMAKE_INSTALL_COMPONENT)
+  endif()
+endif()
+
+# Is this installation the result of a crosscompile?
+if(NOT DEFINED CMAKE_CROSSCOMPILING)
+  set(CMAKE_CROSSCOMPILING "FALSE")
+endif()
+
+# Set path to fallback-tool for dependency-resolution.
+if(NOT DEFINED CMAKE_OBJDUMP)
+  set(CMAKE_OBJDUMP "/usr/bin/objdump")
+endif()
+
+string(REPLACE ";" "\n" CMAKE_INSTALL_MANIFEST_CONTENT
+       "${CMAKE_INSTALL_MANIFEST_FILES}")
+if(CMAKE_INSTALL_LOCAL_ONLY)
+  file(WRITE "/Users/adolforeyna/Projects/basic1/emulator/install_local_manifest.txt"
+     "${CMAKE_INSTALL_MANIFEST_CONTENT}")
+endif()
+if(CMAKE_INSTALL_COMPONENT)
+  if(CMAKE_INSTALL_COMPONENT MATCHES "^[a-zA-Z0-9_.+-]+$")
+    set(CMAKE_INSTALL_MANIFEST "install_manifest_${CMAKE_INSTALL_COMPONENT}.txt")
+  else()
+    string(MD5 CMAKE_INST_COMP_HASH "${CMAKE_INSTALL_COMPONENT}")
+    set(CMAKE_INSTALL_MANIFEST "install_manifest_${CMAKE_INST_COMP_HASH}.txt")
+    unset(CMAKE_INST_COMP_HASH)
+  endif()
+else()
+  set(CMAKE_INSTALL_MANIFEST "install_manifest.txt")
+endif()
+
+if(NOT CMAKE_INSTALL_LOCAL_ONLY)
+  file(WRITE "/Users/adolforeyna/Projects/basic1/emulator/${CMAKE_INSTALL_MANIFEST}"
+     "${CMAKE_INSTALL_MANIFEST_CONTENT}")
+endif()

emulator/game.h

@@ -15,6 +15,7 @@ public:
     virtual bool update(const InputEvent& event) = 0;
     virtual void draw() = 0;
     virtual bool wants_to_exit() const { return false; }
+    virtual bool wants_frame_updates() const { return false; }
     
     // Public members for Lua bindings access
     uint16_t width;

emulator/game_launcher.cpp

@@ -7,8 +7,9 @@
 extern Font font_5x5_obj;
 GameLauncher::GameLauncher(uint16_t width, uint16_t height, LowLevelRenderer* renderer, LowLevelGUI* gui, InputManager* input_manager)
     : width(width), height(height), renderer(renderer), gui(gui), input_manager(input_manager),
-      selected_index(0), selected_game(nullptr) {}
-void GameLauncher::register_game(const char* name, const char* description, Game* (*factory)(uint16_t, uint16_t, LowLevelRenderer*, LowLevelGUI*, InputManager*)) {
+      selected_index(0), selected_game(nullptr), current_page(0) {}
+void GameLauncher::register_game(const char* name, const char* description, 
+                                  std::function<Game*(uint16_t, uint16_t, LowLevelRenderer*, LowLevelGUI*, InputManager*)> factory) {
     GameEntry entry;
     entry.name = name;
     entry.description = description;
@@ -19,30 +20,70 @@ void GameLauncher::register_game(const char* name, const char* description, Game
 void GameLauncher::draw() {
     LowLevelWindow* window = gui->draw_new_window(10, 10, width - 20, height - 20, "Game Launcher");
     renderer->set_font(&font_5x5_obj);
-    renderer->draw_string_scaled(30, 40, "Select a Game:", 2);
-    for (size_t i = 0; i < games.size(); i++) {
-        int y = MENU_Y_START + (i * MENU_ITEM_HEIGHT);
-        bool is_selected = ((int)i == selected_index);
+    
+    int total_pages = get_total_pages();
+    char title[64];
+    snprintf(title, sizeof(title), "Select a Game: (Page %d/%d)", current_page + 1, total_pages);
+    renderer->draw_string_scaled(30, 40, title, 2);
+    
+    int page_start = get_page_start_index();
+    int page_end = get_page_end_index();
+    
+    for (int i = page_start; i < page_end && i < (int)games.size(); i++) {
+        int item_index = i - page_start;
+        int y = MENU_Y_START + (item_index * MENU_ITEM_HEIGHT);
+        bool is_selected = (i == selected_index);
         gui->draw_button(window, 20, y, games[i].name, is_selected, true);
         renderer->set_font(&font_5x5_obj);
         renderer->set_text_color(true);
         renderer->draw_string_scaled(50, y + 36, games[i].description, 1);
     }
-    const char* instructions;
-    if (input_manager->has_buttons()) {
-        instructions = "Touch game or use KEY0/KEY1";
-    } else {
-        instructions = "Touch game to play";
-    }
+    
+    if (total_pages > 1) {
+        int button_y = height - 65;
+        gui->draw_button(window, PREV_BUTTON_X, button_y, "< PREV", false, true);
+        gui->draw_button(window, NEXT_BUTTON_X, button_y, "NEXT >", false, true);
         renderer->set_font(&font_5x5_obj);
-    renderer->draw_string_scaled(30, height - 35, instructions, 2);
+        renderer->draw_string_scaled(30, height - 25, "Touch buttons or KEY0/KEY1", 1);
+    } else {
+        renderer->set_font(&font_5x5_obj);
+        renderer->draw_string_scaled(30, height - 35, "KEY0: Navigate | KEY1: Select | Touch to play", 1);
+    }
 }
 bool GameLauncher::update(const InputEvent& event) {
     bool needs_refresh = false;
+    int total_pages = get_total_pages();
+    
     switch (event.type) {
         case INPUT_TOUCH_DOWN: {
-            for (size_t i = 0; i < games.size(); i++) {
-                int y = MENU_Y_START + (i * MENU_ITEM_HEIGHT);
+            // Check if touch is on navigation buttons (if multiple pages)
+            if (total_pages > 1) {
+                if (event.x >= PREV_BUTTON_X && event.x < PREV_BUTTON_X + BUTTON_WIDTH &&
+                    event.y >= NAV_BUTTON_Y && event.y < NAV_BUTTON_Y + BUTTON_HEIGHT) {
+                    if (current_page > 0) {
+                        current_page--;
+                        selected_index = get_page_start_index();
+                        needs_refresh = true;
+                    }
+                    break;
+                }
+                if (event.x >= NEXT_BUTTON_X && event.x < NEXT_BUTTON_X + BUTTON_WIDTH &&
+                    event.y >= NAV_BUTTON_Y && event.y < NAV_BUTTON_Y + BUTTON_HEIGHT) {
+                    if (current_page + 1 < total_pages) {
+                        current_page++;
+                        selected_index = get_page_start_index();
+                        needs_refresh = true;
+                    }
+                    break;
+                }
+            }
+            
+            int page_start = get_page_start_index();
+            int page_end = get_page_end_index();
+            
+            for (int i = page_start; i < page_end && i < (int)games.size(); i++) {
+                int item_index = i - page_start;
+                int y = MENU_Y_START + (item_index * MENU_ITEM_HEIGHT);
                 if (event.y >= y - 5 && event.y < y + MENU_ITEM_HEIGHT - 5) {
                     selected_game = games[i].factory(width, height, renderer, gui, input_manager);
                     if (selected_game) {
@@ -55,10 +96,33 @@ bool GameLauncher::update(const InputEvent& event) {
             break;
         }
         case INPUT_BUTTON_0: {
-            if (games.size() > 0) {
-                selected_index = (selected_index + 1) % games.size();
-                needs_refresh = true;
+            int page_start = get_page_start_index();
+            int page_end = get_page_end_index();
+            
+            if (page_end - page_start > 1) {
+                int old_index = selected_index;
+                selected_index++;
+                if (selected_index >= page_end) {
+                    if (current_page + 1 < total_pages) {
+                        current_page++;
+                        selected_index = get_page_start_index();
+                    } else {
+                        current_page = 0;
+                        selected_index = 0;
                     }
+                } else if (selected_index < page_start) {
+                    selected_index = page_start;
+                }
+            } else {
+                if (current_page + 1 < total_pages) {
+                    current_page++;
+                    selected_index = get_page_start_index();
+                } else {
+                    current_page = 0;
+                    selected_index = 0;
+                }
+            }
+            needs_refresh = true;
             break;
         }
         case INPUT_BUTTON_1: {
@@ -83,4 +147,18 @@ void GameLauncher::reset() {
         selected_game = nullptr;
     }
     selected_index = 0;
+    current_page = 0;
+}
+
+int GameLauncher::get_total_pages() const {
+    if (games.empty()) return 1;
+    return (games.size() + GAMES_PER_PAGE - 1) / GAMES_PER_PAGE;
+}
+
+int GameLauncher::get_page_start_index() const {
+    return current_page * GAMES_PER_PAGE;
+}
+
+int GameLauncher::get_page_end_index() const {
+    return (current_page + 1) * GAMES_PER_PAGE;
 }

emulator/game_launcher.h

@@ -37,8 +37,19 @@ private:
     std::vector<GameEntry> games;
     int selected_index;
     Game* selected_game;
+    int current_page;
     
     static const int MENU_Y_START = 60;
     static const int MENU_ITEM_HEIGHT = 40;
     static const int MENU_PADDING = 10;
+    static const int GAMES_PER_PAGE = 4;
+    static const int NAV_BUTTON_Y = 235;
+    static const int PREV_BUTTON_X = 30;
+    static const int NEXT_BUTTON_X = 200;
+    static const int BUTTON_WIDTH = 150;
+    static const int BUTTON_HEIGHT = 40;
+    
+    int get_total_pages() const;
+    int get_page_start_index() const;
+    int get_page_end_index() const;
 };

emulator/games/lua_examples/ball.lua

@@ -0,0 +1,84 @@
+-- NAME: Bouncing Ball
+-- DESC: Physics demo with state management
+
+-- States
+local STATE_PAUSED = 0
+local STATE_RUNNING = 1
+
+function init()
+    game.vars.state = STATE_PAUSED
+    game.vars.ball_x = game.width() / 2
+    game.vars.ball_y = game.height() / 2
+    game.vars.vel_x = 3
+    game.vars.vel_y = 2
+    game.vars.radius = 10
+    game.vars.frame_count = 0
+    
+    -- Enable continuous frame updates for smooth animation
+    game.set_frame_updates(true)
+    
+    print("Bouncing Ball initialized")
+end
+
+function update(event)
+    -- Toggle pause on tap
+    if event.type == INPUT.TOUCH_DOWN or event.type == INPUT.BUTTON_0 or event.type == INPUT.BUTTON_1 then
+        if game.vars.state == STATE_PAUSED then
+            game.vars.state = STATE_RUNNING
+        else
+            game.vars.state = STATE_PAUSED
+        end
+        return true
+    end
+    
+    -- Update physics if running (on any frame tick)
+    if event.type == INPUT.FRAME_TICK and game.vars.state == STATE_RUNNING then
+        -- Move ball
+        game.vars.ball_x = game.vars.ball_x + game.vars.vel_x
+        game.vars.ball_y = game.vars.ball_y + game.vars.vel_y
+        
+        -- Bounce off walls
+        if game.vars.ball_x - game.vars.radius < 0 or game.vars.ball_x + game.vars.radius > game.width() then
+            game.vars.vel_x = -game.vars.vel_x
+            game.vars.ball_x = math.max(game.vars.radius, math.min(game.width() - game.vars.radius, game.vars.ball_x))
+        end
+        
+        if game.vars.ball_y - game.vars.radius < 0 or game.vars.ball_y + game.vars.radius > game.height() then
+            game.vars.vel_y = -game.vars.vel_y
+            game.vars.ball_y = math.max(game.vars.radius, math.min(game.height() - game.vars.radius, game.vars.ball_y))
+        end
+        
+        game.vars.frame_count = game.vars.frame_count + 1
+        return true  -- Always redraw when running
+    end
+    
+    return false
+end
+
+function draw()
+    renderer.clear(false)
+    
+    -- Draw ball
+    renderer.circle(game.vars.ball_x, game.vars.ball_y, game.vars.radius, true, true)
+    
+    -- Draw trail (previous positions)
+    local trail_radius = game.vars.radius - 2
+    if trail_radius > 2 then
+        renderer.circle(game.vars.ball_x - game.vars.vel_x, 
+                       game.vars.ball_y - game.vars.vel_y, 
+                       trail_radius, true, false)
+    end
+    
+    -- Draw status
+    if game.vars.state == STATE_PAUSED then
+        renderer.text(10, 10, "PAUSED - Tap to start", true)
+    else
+        renderer.text(10, 10, "Frames: " .. tostring(game.vars.frame_count), true)
+        renderer.text(10, 25, "Tap to pause", true)
+    end
+    
+    -- Draw velocity vector
+    local arrow_x = game.vars.ball_x + game.vars.vel_x * 3
+    local arrow_y = game.vars.ball_y + game.vars.vel_y * 3
+    renderer.line(game.vars.ball_x, game.vars.ball_y, arrow_x, arrow_y, true, 2)
+end

emulator/games/lua_examples/counter.lua

@@ -0,0 +1,49 @@
+-- NAME: Touch Counter
+-- DESC: Simple tap counter demo
+
+-- Initialize game state
+function init()
+    game.vars.count = 0
+    game.vars.last_x = 0
+    game.vars.last_y = 0
+    print("Counter initialized")
+end
+
+-- Update game logic based on input
+function update(event)
+    -- Check if touch/button pressed
+    if event.type == INPUT.TOUCH_DOWN or event.type == INPUT.BUTTON_0 or event.type == INPUT.BUTTON_1 then
+        game.vars.count = game.vars.count + 1
+        game.vars.last_x = event.x
+        game.vars.last_y = event.y
+        print("Count: " .. game.vars.count)
+        return true  -- Request redraw
+    end
+    
+    return false  -- No redraw needed
+end
+
+-- Draw the game
+function draw()
+    -- Clear screen
+    renderer.clear(true)
+    
+    -- Draw title
+    renderer.text(20, 20, "Touch Counter", true)
+    
+    -- Draw count (centered)
+    local count_text = "Count: " .. tostring(game.vars.count)
+    renderer.text(game.width() / 2 - 40, game.height() / 2 - 10, count_text, true)
+    
+    -- Draw last touch position
+    if game.vars.count > 0 then
+        local pos_text = "Last: (" .. tostring(game.vars.last_x) .. ", " .. tostring(game.vars.last_y) .. ")"
+        renderer.text(20, game.height() - 30, pos_text, true)
+        
+        -- Draw marker at last touch
+        renderer.circle(game.vars.last_x, game.vars.last_y, 5, true, false)
+    end
+    
+    -- Draw instructions
+    renderer.text(20, 50, "Tap screen to increment", true)
+end

emulator/games/lua_examples/snake.lua

@@ -0,0 +1,219 @@
+-- NAME: Snake Game
+-- DESC: Classic snake with state machine
+
+-- Game states
+local STATE_MENU = 0
+local STATE_PLAYING = 1
+local STATE_GAME_OVER = 2
+
+-- Game constants
+local CELL_SIZE = 10
+local GRID_W = 40
+local GRID_H = 28
+
+-- Initialize game
+function init()
+    game.vars.state = STATE_MENU
+    game.vars.score = 0
+    game.vars.high_score = 0
+    
+    -- Snake as array of {x, y} positions
+    game.vars.snake = {}
+    game.vars.snake[1] = {x = 20, y = 14}
+    game.vars.snake[2] = {x = 19, y = 14}
+    game.vars.snake[3] = {x = 18, y = 14}
+    
+    game.vars.dir_x = 1
+    game.vars.dir_y = 0
+    
+    game.vars.food_x = 30
+    game.vars.food_y = 14
+    
+    game.vars.frame_count = 0
+    game.vars.move_speed = 10  -- Frames between moves
+    
+    -- Enable continuous frame updates
+    game.set_frame_updates(true)
+    
+    print("Snake Game initialized")
+end
+
+-- Update game logic
+function update(event)
+    local state = game.vars.state
+    
+    -- State: MENU
+    if state == STATE_MENU then
+        if event.type == INPUT.TOUCH_DOWN or event.type == INPUT.BUTTON_0 or event.type == INPUT.BUTTON_1 then
+            game.vars.state = STATE_PLAYING
+            game.vars.score = 0
+            init_snake()
+            spawn_food()
+            return true
+        end
+    
+    -- State: PLAYING
+    elseif state == STATE_PLAYING then
+        -- Handle input for direction change
+        if event.type == INPUT.TOUCH_DOWN then
+            local head = game.vars.snake[1]
+            local head_screen_x = head.x * CELL_SIZE
+            local head_screen_y = head.y * CELL_SIZE
+            
+            local dx = event.x - head_screen_x
+            local dy = event.y - head_screen_y
+            
+            -- Change direction based on touch relative to head
+            if math.abs(dx) > math.abs(dy) then
+                if dx > 0 and game.vars.dir_x ~= -1 then
+                    game.vars.dir_x = 1
+                    game.vars.dir_y = 0
+                elseif dx < 0 and game.vars.dir_x ~= 1 then
+                    game.vars.dir_x = -1
+                    game.vars.dir_y = 0
+                end
+            else
+                if dy > 0 and game.vars.dir_y ~= -1 then
+                    game.vars.dir_x = 0
+                    game.vars.dir_y = 1
+                elseif dy < 0 and game.vars.dir_y ~= 1 then
+                    game.vars.dir_x = 0
+                    game.vars.dir_y = -1
+                end
+            end
+        end
+        
+        -- Move snake every N frames
+        game.vars.frame_count = game.vars.frame_count + 1
+        if game.vars.frame_count >= game.vars.move_speed then
+            game.vars.frame_count = 0
+            move_snake()
+            return true
+        end
+    
+    -- State: GAME_OVER
+    elseif state == STATE_GAME_OVER then
+        if event.type == INPUT.TOUCH_DOWN or event.type == INPUT.BUTTON_0 or event.type == INPUT.BUTTON_1 then
+            game.vars.state = STATE_MENU
+            return true
+        end
+    end
+    
+    return false
+end
+
+-- Draw game
+function draw()
+    renderer.clear(false)
+    
+    local state = game.vars.state
+    
+    -- Draw: MENU
+    if state == STATE_MENU then
+        renderer.text(game.width() / 2 - 30, game.height() / 2 - 20, "SNAKE", true)
+        renderer.text(game.width() / 2 - 50, game.height() / 2, "Tap to Start", true)
+        
+        if game.vars.high_score > 0 then
+            local hs_text = "High: " .. tostring(game.vars.high_score)
+            renderer.text(game.width() / 2 - 30, game.height() / 2 + 20, hs_text, true)
+        end
+    
+    -- Draw: PLAYING
+    elseif state == STATE_PLAYING then
+        -- Draw snake
+        for i = 1, #game.vars.snake do
+            local seg = game.vars.snake[i]
+            local filled = (i == 1)  -- Head filled, body outline
+            renderer.rect(seg.x * CELL_SIZE, seg.y * CELL_SIZE, CELL_SIZE, CELL_SIZE, true, filled)
+        end
+        
+        -- Draw food
+        renderer.circle(game.vars.food_x * CELL_SIZE + CELL_SIZE / 2, 
+                       game.vars.food_y * CELL_SIZE + CELL_SIZE / 2, 
+                       CELL_SIZE / 2, true, true)
+        
+        -- Draw score
+        local score_text = "Score: " .. tostring(game.vars.score)
+        renderer.text(5, 5, score_text, true)
+    
+    -- Draw: GAME_OVER
+    elseif state == STATE_GAME_OVER then
+        renderer.text(game.width() / 2 - 40, game.height() / 2 - 20, "GAME OVER", true)
+        
+        local score_text = "Score: " .. tostring(game.vars.score)
+        renderer.text(game.width() / 2 - 40, game.height() / 2, score_text, true)
+        
+        renderer.text(game.width() / 2 - 60, game.height() / 2 + 20, "Tap to Continue", true)
+    end
+end
+
+-- Helper: Initialize snake
+function init_snake()
+    game.vars.snake = {}
+    game.vars.snake[1] = {x = 20, y = 14}
+    game.vars.snake[2] = {x = 19, y = 14}
+    game.vars.snake[3] = {x = 18, y = 14}
+    game.vars.dir_x = 1
+    game.vars.dir_y = 0
+end
+
+-- Helper: Spawn food at random position
+function spawn_food()
+    game.vars.food_x = math.random(0, GRID_W - 1)
+    game.vars.food_y = math.random(0, GRID_H - 1)
+end
+
+-- Helper: Move snake
+function move_snake()
+    local head = game.vars.snake[1]
+    local new_head = {
+        x = head.x + game.vars.dir_x,
+        y = head.y + game.vars.dir_y
+    }
+    
+    -- Check wall collision
+    if new_head.x < 0 or new_head.x >= GRID_W or new_head.y < 0 or new_head.y >= GRID_H then
+        game_over()
+        return
+    end
+    
+    -- Check self collision
+    for i = 1, #game.vars.snake do
+        local seg = game.vars.snake[i]
+        if new_head.x == seg.x and new_head.y == seg.y then
+            game_over()
+            return
+        end
+    end
+    
+    -- Check food collision
+    local ate_food = false
+    if new_head.x == game.vars.food_x and new_head.y == game.vars.food_y then
+        ate_food = true
+        game.vars.score = game.vars.score + 10
+        spawn_food()
+        
+        -- Increase speed slightly
+        if game.vars.move_speed > 3 then
+            game.vars.move_speed = game.vars.move_speed - 1
+        end
+    end
+    
+    -- Move snake
+    table.insert(game.vars.snake, 1, new_head)
+    
+    if not ate_food then
+        table.remove(game.vars.snake)  -- Remove tail
+    end
+end
+
+-- Helper: Game over
+function game_over()
+    game.vars.state = STATE_GAME_OVER
+    
+    if game.vars.score > game.vars.high_score then
+        game.vars.high_score = game.vars.score
+    end
+    
+    print("Game Over! Score: " .. game.vars.score)
+end

emulator/lua_game_emulator.cpp

@@ -171,7 +171,17 @@ bool LuaGame::wants_to_exit() const {
     
     return exit;
 }
+bool LuaGame::wants_frame_updates() const {
+    if (!L) return false;
     
+    // Check registry for frame updates flag
+    lua_pushstring(L, "__wants_frame_updates");
+    lua_gettable(L, LUA_REGISTRYINDEX);
+    bool wants_updates = lua_toboolean(L, -1);
+    lua_pop(L, 1);
+    
+    return wants_updates;
+}
 bool LuaGame::call_lua_function(const char* func_name, int nargs, int nresults) {
     int result = lua_pcall(L, nargs, nresults, 0);
     if (result != LUA_OK) {

emulator/lua_game_loader_emulator.cpp

@@ -18,6 +18,8 @@ namespace fs = std::filesystem;
 // Structure to hold script path for factory closure
 struct LuaGameFactoryData {
     char script_path[256];
+    char name[64];
+    char description[128];
 };
 
 static std::vector<LuaGameFactoryData*> factory_data_list;
@@ -124,23 +126,22 @@ int LuaGameLoader::register_all_games(GameLauncher* launcher) {
             
             std::string script_path = entry.path().string();
             
-            // Parse metadata
-            char name[64];
-            char description[128];
-            parse_metadata(script_path.c_str(), name, description);
-            
-            printf("LuaGameLoader: Found %s - '%s'\n", entry.path().filename().string().c_str(), name);
-            
             // Create factory data (persistent for game lifetime)
             LuaGameFactoryData* data = new LuaGameFactoryData();
             strncpy(data->script_path, script_path.c_str(), sizeof(data->script_path) - 1);
             data->script_path[sizeof(data->script_path) - 1] = '\0';
+            
+            // Parse metadata directly into persistent storage
+            parse_metadata(script_path.c_str(), data->name, data->description);
+            
+            printf("LuaGameLoader: Found %s - '%s'\n", entry.path().filename().string().c_str(), data->name);
+            
             factory_data_list.push_back(data);
             
             // Register with launcher - using lambda factory pattern
             launcher->register_game(
-                name,
-                description[0] ? description : "Lua Script",
+                data->name,
+                data->description[0] ? data->description : "Lua Script",
                 [data](uint16_t width, uint16_t height, LowLevelRenderer* renderer, 
                        LowLevelGUI* gui, InputManager* input_manager) -> Game* {
                     return new LuaGame(data->script_path, width, height, renderer, gui, input_manager);

emulator/main.cpp

@@ -62,13 +62,13 @@ int main() {
         InputEvent event = {INPUT_NONE, 0, 0, 0, 0, 0, false};
         
         while (const auto sfEvent = display.pollEvent()) {
-            if (const auto* closed = sfEvent->getIf<sf::Event::Closed>()) {
+            if (sfEvent->is<sf::Event::Closed>()) {
                 display.close();
                 running = false;
-            } else if (const auto* mousePressed = sfEvent->getIf<sf::Event::MouseButtonPressed>()) {
+            } else if (const auto* mouse = sfEvent->getIf<sf::Event::MouseButtonPressed>()) {
                 event.type = INPUT_TOUCH_DOWN;
-                event.x = mousePressed->position.x;
-                event.y = mousePressed->position.y;
+                event.x = mouse->position.x;
+                event.y = mouse->position.y;
                 event.valid = true;
 
                 // Check for virtual buttons
@@ -76,14 +76,14 @@ int main() {
                 if (input_manager.check_virtual_buttons(event.x, event.y, virtual_type)) {
                     event.type = virtual_type;
                 }
-            } else if (const auto* keyPressed = sfEvent->getIf<sf::Event::KeyPressed>()) {
-                if (keyPressed->code == sf::Keyboard::Key::Space) {
+            } else if (const auto* key = sfEvent->getIf<sf::Event::KeyPressed>()) {
+                if (key->code == sf::Keyboard::Key::Space) {
                     event.type = INPUT_BUTTON_0;
                     event.valid = true;
-                } else if (keyPressed->code == sf::Keyboard::Key::Enter) {
+                } else if (key->code == sf::Keyboard::Key::Enter) {
                     event.type = INPUT_BUTTON_1;
                     event.valid = true;
-                } else if (keyPressed->code == sf::Keyboard::Key::Escape) {
+                } else if (key->code == sf::Keyboard::Key::Escape) {
                     // Simulate long-press exit
                     if (launcher.is_game_selected()) {
                         launcher.reset();
@@ -109,6 +109,19 @@ int main() {
             }
         }
         
+        // Check if game wants frame tick updates (independent of user input)
+        if (launcher.is_game_selected()) {
+            current_game = launcher.get_selected_game();
+            if (current_game->wants_frame_updates()) {
+                InputEvent frame_event = {INPUT_FRAME_TICK, 0, 0, 0, 0, 0, true};
+                needs_redraw = current_game->update(frame_event) || needs_redraw;
+                if (current_game->wants_to_exit()) {
+                    launcher.reset();
+                    needs_redraw = true;
+                }
+            }
+        }
+
         // Always redraw every frame for emulator
         renderer.clear_buffer();
         if (launcher.is_game_selected()) {

games/lua_bindings.cpp

@@ -125,6 +125,23 @@ static int lua_renderer_text(lua_State* L) {
     return 0;
 }
 
+// renderer.text_scaled(x, y, text, on, scale)
+static int lua_renderer_text_scaled(lua_State* L) {
+    LuaGame* game = get_game(L);
+    if (!game) return 0;
+    
+    int x = luaL_checkinteger(L, 1);
+    int y = luaL_checkinteger(L, 2);
+    const char* text = luaL_checkstring(L, 3);
+    bool on = lua_toboolean(L, 4);
+    int scale = lua_isnone(L, 5) ? 1 : luaL_checkinteger(L, 5);
+    
+    game->renderer->set_text_color(on);
+    game->renderer->draw_string_scaled(x, y, text, scale, 1);
+    
+    return 0;
+}
+
 // renderer.triangle(x0, y0, x1, y1, x2, y2, on, filled)
 static int lua_renderer_triangle(lua_State* L) {
     LuaGame* game = get_game(L);
@@ -186,6 +203,21 @@ static int lua_game_exit(lua_State* L) {
     return 0;
 }
 
+// game.set_frame_updates(enabled) - enable/disable continuous frame tick events
+static int lua_game_set_frame_updates(lua_State* L) {
+    LuaGame* game = get_game(L);
+    if (!game) return 0;
+    
+    bool enabled = lua_toboolean(L, 1);
+    
+    // Set frame updates flag (will be checked in wants_frame_updates())
+    lua_pushstring(L, "__wants_frame_updates");
+    lua_pushboolean(L, enabled);
+    lua_settable(L, LUA_REGISTRYINDEX);
+    
+    return 0;
+}
+
 // ============================================================================
 // INPUT TYPE CONSTANTS
 // ============================================================================
@@ -222,6 +254,10 @@ static void register_input_constants(lua_State* L) {
     lua_pushinteger(L, 6);
     lua_settable(L, -3);
 
+    lua_pushstring(L, "FRAME_TICK");
+    lua_pushinteger(L, 7);
+    lua_settable(L, -3);
+    
     lua_setglobal(L, "INPUT");
 }
 
@@ -262,6 +298,10 @@ void lua_bindings_register(lua_State* L, LuaGame* game) {
     lua_pushcfunction(L, lua_renderer_text);
     lua_settable(L, -3);
     
+    lua_pushstring(L, "text_scaled");
+    lua_pushcfunction(L, lua_renderer_text_scaled);
+    lua_settable(L, -3);
+    
     lua_pushstring(L, "triangle");
     lua_pushcfunction(L, lua_renderer_triangle);
     lua_settable(L, -3);
@@ -283,6 +323,10 @@ void lua_bindings_register(lua_State* L, LuaGame* game) {
     lua_pushcfunction(L, lua_game_exit);
     lua_settable(L, -3);
     
+    lua_pushstring(L, "set_frame_updates");
+    lua_pushcfunction(L, lua_game_set_frame_updates);
+    lua_settable(L, -3);
+    
     // Create empty vars table for persistent state
     lua_pushstring(L, "vars");
     lua_newtable(L);

games/lua_examples/2048.lua

@@ -0,0 +1,415 @@
+-- NAME: 2048
+-- DESC: Merge tiles to reach 2048
+
+-- Game states
+local STATE_MENU = 0
+local STATE_PLAYING = 1
+local STATE_GAME_OVER = 2
+local STATE_WIN = 3
+
+-- Game constants
+local GRID_SIZE = 4
+
+-- Calculate tile size based on screen size
+local function get_tile_size()
+    -- Use smallest dimension for square grid
+    local min_dim = math.min(game.width(), game.height())
+    local padding = math.floor(min_dim / 8)
+    local available = min_dim - (padding * 2)
+    local tile_size = math.floor(available / GRID_SIZE)
+    return tile_size
+end
+
+local function get_grid_start_x()
+    local tile_size = get_tile_size()
+    local grid_width = tile_size * GRID_SIZE
+    return math.floor((game.width() - grid_width) / 2)
+end
+
+local function get_grid_start_y()
+    local tile_size = get_tile_size()
+    local grid_height = tile_size * GRID_SIZE
+    return math.floor((game.height() - grid_height) / 2)
+end
+
+function init()
+    game.vars.state = STATE_MENU
+    game.vars.score = 0
+    
+    -- Grid (4x4, 0 = empty)
+    game.vars.grid = {}
+    for y = 1, GRID_SIZE do
+        game.vars.grid[y] = {}
+        for x = 1, GRID_SIZE do
+            game.vars.grid[y][x] = 0
+        end
+    end
+    
+    game.vars.moved = false
+    game.vars.won = false
+    
+    -- Enable continuous updates
+    -- game.set_frame_updates(true)
+    
+    print("2048 initialized")
+end
+
+function update(event)
+    local state = game.vars.state
+    
+    if state == STATE_MENU then
+        if event.type == INPUT.TOUCH_DOWN or event.type == INPUT.BUTTON_0 or event.type == INPUT.BUTTON_1 then
+            reset_game()
+            game.vars.state = STATE_PLAYING
+            return true
+        end
+    
+    elseif state == STATE_PLAYING then
+        if event.type == INPUT.TOUCH_DOWN then
+            -- Determine swipe direction
+            local direction = get_swipe_direction(event.x, event.y)
+            if direction then
+                game.vars.moved = false
+                move_tiles(direction)
+                
+                if game.vars.moved then
+                    spawn_tile()
+                    
+                    -- Check win/lose
+                    if has_tile(2048) then
+                        if not game.vars.won then
+                            game.vars.state = STATE_WIN
+                            game.vars.won = true
+                        end
+                    end
+                    
+                    if not can_move() then
+                        game.vars.state = STATE_GAME_OVER
+                    end
+                    
+                    return true
+                end
+            end
+        end
+    
+    elseif state == STATE_WIN then
+        if event.type == INPUT.TOUCH_DOWN or event.type == INPUT.BUTTON_0 or event.type == INPUT.BUTTON_1 then
+            -- Can continue playing or go to menu
+            if event.y < game.height() / 2 then
+                game.vars.state = STATE_PLAYING
+            else
+                game.vars.state = STATE_MENU
+            end
+            return true
+        end
+    
+    elseif state == STATE_GAME_OVER then
+        if event.type == INPUT.TOUCH_DOWN or event.type == INPUT.BUTTON_0 or event.type == INPUT.BUTTON_1 then
+            game.vars.state = STATE_MENU
+            return true
+        end
+    end
+    
+    return false
+end
+
+function draw()
+    renderer.clear(false)
+    
+    local state = game.vars.state
+    local tile_size = get_tile_size()
+    local start_x = get_grid_start_x()
+    local start_y = get_grid_start_y()
+    
+    if state == STATE_MENU then
+        renderer.text_scaled(game.width() / 2 - 15, game.height() / 2 - 30, "2048", true, 2)
+        renderer.text_scaled(game.width() / 2 - 50, game.height() / 2, "Tap to Start", true, 2)
+        renderer.text_scaled(game.width() / 2 - 50, game.height() / 2 + 30, "Welcome Adolfo", true, 2)
+    
+    elseif state == STATE_PLAYING or state == STATE_WIN or state == STATE_GAME_OVER then
+        -- Draw grid
+        for y = 1, GRID_SIZE do
+            for x = 1, GRID_SIZE do
+                local tile_x = start_x + (x - 1) * tile_size
+                local tile_y = start_y + (y - 1) * tile_size
+                local value = game.vars.grid[y][x]
+                
+                if value == 0 then
+                    -- Empty tile
+                    renderer.rect(tile_x, tile_y, tile_size, tile_size, true, false)
+                else
+                    local reduce_size
+                    if value == 2 then
+                        reduce_size = 10
+                    elseif value == 4 then
+                        reduce_size = 8
+                    elseif value == 8 then
+                        reduce_size = 6
+                    elseif value == 16 then
+                        reduce_size = 4
+                    elseif value == 32 then
+                        reduce_size = 2
+                    else
+                        reduce_size = 0
+                    end
+                    -- Empty tile
+                    renderer.rect(tile_x, tile_y, tile_size, tile_size, true, false)
+                    -- Filled tile
+                    renderer.rect(tile_x+reduce_size, tile_y+reduce_size, tile_size-reduce_size*2, tile_size-reduce_size*2, true, true)
+                    
+                    -- Draw value (simplified)
+                    local text = tostring(value)
+                    if string.len(text) < 2 then
+                        renderer.text_scaled(tile_x + tile_size / 2 - 4, tile_y + tile_size / 2 - 8, text, false, 2)
+                    else
+                        renderer.text_scaled(tile_x + tile_size / 2 - 12, tile_y + tile_size / 2 - 8, text, false, 2)
+                    end
+                end
+            end
+        end
+        
+        -- Draw score
+        renderer.text_scaled(10, 10, "Score: " .. tostring(game.vars.score), true, 2)
+        
+        if state == STATE_WIN then
+            renderer.text_scaled(game.width() / 2 - 30, game.height() / 2 - 20, "YOU WIN!", true, 2)
+            renderer.text_scaled(game.width() / 2 - 60, game.height() / 2, "Tap up: Continue", true, 2)
+            renderer.text_scaled(game.width() / 2 - 50, game.height() / 2 + 15, "Tap down: Menu", true, 2)
+        end
+        
+        if state == STATE_GAME_OVER then
+            renderer.text_scaled(game.width() / 2 - 40, game.height() / 2, "GAME OVER", true, 2)
+            renderer.text_scaled(game.width() / 2 - 30, game.height() / 2 + 15, "Score: " .. tostring(game.vars.score), true, 2)
+            renderer.text_scaled(game.width() / 2 - 60, game.height() / 2 + 30, "Tap to Menu", true, 2)
+        end
+    end
+end
+
+function get_swipe_direction(x, y)
+    -- Simple tap-based direction (could be enhanced with swipe tracking)
+    local mid_x = game.width() / 2
+    local mid_y = game.height() / 2
+    
+    local dx = x - mid_x
+    local dy = y - mid_y
+    
+    if math.abs(dx) > math.abs(dy) then
+        if dx > 0 then return "right" end
+        return "left"
+    else
+        if dy > 0 then return "down" end
+        return "up"
+    end
+end
+
+function move_tiles(direction)
+    local old_grid = {}
+    for y = 1, GRID_SIZE do
+        old_grid[y] = {}
+        for x = 1, GRID_SIZE do
+            old_grid[y][x] = game.vars.grid[y][x]
+        end
+    end
+    
+    if direction == "left" then
+        move_left()
+    elseif direction == "right" then
+        move_right()
+    elseif direction == "up" then
+        move_up()
+    elseif direction == "down" then
+        move_down()
+    end
+    
+    -- Check if grid changed
+    for y = 1, GRID_SIZE do
+        for x = 1, GRID_SIZE do
+            if old_grid[y][x] ~= game.vars.grid[y][x] then
+                game.vars.moved = true
+                return
+            end
+        end
+    end
+end
+
+function move_left()
+    for y = 1, GRID_SIZE do
+        -- Compact
+        local row = {}
+        for x = 1, GRID_SIZE do
+            if game.vars.grid[y][x] ~= 0 then
+                table.insert(row, game.vars.grid[y][x])
+            end
+        end
+        
+        -- Merge
+        local i = 1
+        while i < #row do
+            if row[i] == row[i + 1] then
+                row[i] = row[i] * 2
+                game.vars.score = game.vars.score + row[i]
+                table.remove(row, i + 1)
+            end
+            i = i + 1
+        end
+        
+        -- Fill back
+        for x = 1, GRID_SIZE do
+            if x <= #row then
+                game.vars.grid[y][x] = row[x]
+            else
+                game.vars.grid[y][x] = 0
+            end
+        end
+    end
+end
+
+function move_right()
+    for y = 1, GRID_SIZE do
+        local row = {}
+        for x = GRID_SIZE, 1, -1 do
+            if game.vars.grid[y][x] ~= 0 then
+                table.insert(row, game.vars.grid[y][x])
+            end
+        end
+        
+        local i = 1
+        while i < #row do
+            if row[i] == row[i + 1] then
+                row[i] = row[i] * 2
+                game.vars.score = game.vars.score + row[i]
+                table.remove(row, i + 1)
+            end
+            i = i + 1
+        end
+        
+        for x = GRID_SIZE, 1, -1 do
+            if GRID_SIZE - x + 1 <= #row then
+                game.vars.grid[y][x] = row[GRID_SIZE - x + 1]
+            else
+                game.vars.grid[y][x] = 0
+            end
+        end
+    end
+end
+
+function move_up()
+    for x = 1, GRID_SIZE do
+        local col = {}
+        for y = 1, GRID_SIZE do
+            if game.vars.grid[y][x] ~= 0 then
+                table.insert(col, game.vars.grid[y][x])
+            end
+        end
+        
+        local i = 1
+        while i < #col do
+            if col[i] == col[i + 1] then
+                col[i] = col[i] * 2
+                game.vars.score = game.vars.score + col[i]
+                table.remove(col, i + 1)
+            end
+            i = i + 1
+        end
+        
+        for y = 1, GRID_SIZE do
+            if y <= #col then
+                game.vars.grid[y][x] = col[y]
+            else
+                game.vars.grid[y][x] = 0
+            end
+        end
+    end
+end
+
+function move_down()
+    for x = 1, GRID_SIZE do
+        local col = {}
+        for y = GRID_SIZE, 1, -1 do
+            if game.vars.grid[y][x] ~= 0 then
+                table.insert(col, game.vars.grid[y][x])
+            end
+        end
+        
+        local i = 1
+        while i < #col do
+            if col[i] == col[i + 1] then
+                col[i] = col[i] * 2
+                game.vars.score = game.vars.score + col[i]
+                table.remove(col, i + 1)
+            end
+            i = i + 1
+        end
+        
+        for y = GRID_SIZE, 1, -1 do
+            if GRID_SIZE - y + 1 <= #col then
+                game.vars.grid[y][x] = col[GRID_SIZE - y + 1]
+            else
+                game.vars.grid[y][x] = 0
+            end
+        end
+    end
+end
+
+function spawn_tile()
+    local empty = {}
+    for y = 1, GRID_SIZE do
+        for x = 1, GRID_SIZE do
+            if game.vars.grid[y][x] == 0 then
+                table.insert(empty, {x = x, y = y})
+            end
+        end
+    end
+    
+    if #empty > 0 then
+        local pos = empty[math.random(1, #empty)]
+        game.vars.grid[pos.y][pos.x] = math.random() > 0.9 and 4 or 2
+    end
+end
+
+function has_tile(value)
+    for y = 1, GRID_SIZE do
+        for x = 1, GRID_SIZE do
+            if game.vars.grid[y][x] == value then
+                return true
+            end
+        end
+    end
+    return false
+end
+
+function can_move()
+    -- Check if any empty tiles
+    for y = 1, GRID_SIZE do
+        for x = 1, GRID_SIZE do
+            if game.vars.grid[y][x] == 0 then
+                return true
+            end
+        end
+    end
+    
+    -- Check if any merges possible
+    for y = 1, GRID_SIZE do
+        for x = 1, GRID_SIZE do
+            local val = game.vars.grid[y][x]
+            if x < GRID_SIZE and game.vars.grid[y][x + 1] == val then return true end
+            if y < GRID_SIZE and game.vars.grid[y + 1][x] == val then return true end
+        end
+    end
+    
+    return false
+end
+
+function reset_game()
+    game.vars.score = 0
+    game.vars.won = false
+    
+    for y = 1, GRID_SIZE do
+        for x = 1, GRID_SIZE do
+            game.vars.grid[y][x] = 0
+        end
+    end
+    
+    spawn_tile()
+    spawn_tile()
+end

games/lua_examples/air_hockey.lua

@@ -0,0 +1,189 @@
+-- NAME: Air Hockey
+-- DESC: Fast-paced 2-player hockey
+
+-- Game states
+local STATE_MENU = 0
+local STATE_PLAYING = 1
+local STATE_GAME_OVER = 2
+
+-- Game constants
+local PADDLE_WIDTH = 6
+local PADDLE_HEIGHT = 35
+local PUCK_RADIUS = 3
+local MAX_SCORE = 7
+local PUCK_SPEED = 4
+
+function init()
+    game.vars.state = STATE_MENU
+    
+    -- Left paddle (player 1)
+    game.vars.paddle_left_y = (game.height() / 2) - (PADDLE_HEIGHT / 2)
+    game.vars.paddle_left_score = 0
+    
+    -- Right paddle (player 2)
+    game.vars.paddle_right_y = (game.height() / 2) - (PADDLE_HEIGHT / 2)
+    game.vars.paddle_right_score = 0
+    
+    -- Puck
+    game.vars.puck_x = game.width() / 2
+    game.vars.puck_y = game.height() / 2
+    game.vars.puck_vel_x = PUCK_SPEED
+    game.vars.puck_vel_y = 1
+    
+    -- Enable continuous updates
+    game.set_frame_updates(true)
+    
+    print("Air Hockey initialized")
+end
+
+function update(event)
+    local state = game.vars.state
+    
+    if state == STATE_MENU then
+        if event.type == INPUT.TOUCH_DOWN or event.type == INPUT.BUTTON_0 or event.type == INPUT.BUTTON_1 then
+            reset_game()
+            game.vars.state = STATE_PLAYING
+            return true
+        end
+    
+    elseif state == STATE_PLAYING then
+        -- Handle paddle input via touch
+        if event.type == INPUT.TOUCH_DOWN or event.type == INPUT.TOUCH_MOVE then
+            if event.x < game.width() / 2 then
+                -- Left paddle
+                game.vars.paddle_left_y = math.max(0, math.min(game.height() - PADDLE_HEIGHT, event.y - PADDLE_HEIGHT / 2))
+            else
+                -- Right paddle
+                game.vars.paddle_right_y = math.max(0, math.min(game.height() - PADDLE_HEIGHT, event.y - PADDLE_HEIGHT / 2))
+            end
+        end
+        
+        -- Update physics on frame tick
+        if event.type == INPUT.FRAME_TICK then
+            update_puck()
+            check_collisions()
+            
+            -- Check win
+            if game.vars.paddle_left_score >= MAX_SCORE or game.vars.paddle_right_score >= MAX_SCORE then
+                game.vars.state = STATE_GAME_OVER
+            end
+            
+            return true
+        end
+    
+    elseif state == STATE_GAME_OVER then
+        if event.type == INPUT.TOUCH_DOWN or event.type == INPUT.BUTTON_0 or event.type == INPUT.BUTTON_1 then
+            game.vars.state = STATE_MENU
+            return true
+        end
+    end
+    
+    return false
+end
+
+function draw()
+    renderer.clear(false)  -- Black background
+    
+    local state = game.vars.state
+    
+    if state == STATE_MENU then
+        renderer.text_scaled(game.width(, 2) / 2 - 35, game.height() / 2 - 30, "AIR HOCKEY", true)
+        renderer.text_scaled(game.width(, 2) / 2 - 50, game.height() / 2, "Tap to Start", true)
+        renderer.text_scaled(game.width(, 2) / 2 - 60, game.height() / 2 + 20, "First to " .. tostring(MAX_SCORE), true)
+    
+    elseif state == STATE_PLAYING or state == STATE_GAME_OVER then
+        -- Draw center line
+        for y = 0, game.height(), 4 do
+            renderer.pixel(game.width() / 2, y, true)
+        end
+        
+        -- Draw goal areas (top/bottom highlights)
+        renderer.line(0, 5, game.width(), 5, true, 1)
+        renderer.line(0, game.height() - 5, game.width(), game.height() - 5, true, 1)
+        
+        -- Draw paddles
+        renderer.rect(5, game.vars.paddle_left_y, PADDLE_WIDTH, PADDLE_HEIGHT, true, true)
+        renderer.rect(game.width() - 5 - PADDLE_WIDTH, game.vars.paddle_right_y, PADDLE_WIDTH, PADDLE_HEIGHT, true, true)
+        
+        -- Draw puck (convert to integers)
+        renderer.circle(math.floor(game.vars.puck_x + 0.5), math.floor(game.vars.puck_y + 0.5), PUCK_RADIUS, true, true)
+        
+        -- Draw scores
+        renderer.text_scaled(game.width(, 2) / 2 - 30, 5, tostring(game.vars.paddle_left_score), true)
+        renderer.text_scaled(game.width(, 2) / 2 + 20, 5, tostring(game.vars.paddle_right_score), true)
+        
+        if state == STATE_GAME_OVER then
+            local winner = game.vars.paddle_left_score > game.vars.paddle_right_score and "Player 1" or "Player 2"
+            renderer.text_scaled(game.width(, 2) / 2 - 50, game.height() / 2 - 20, "GAME OVER", true)
+            renderer.text_scaled(game.width(, 2) / 2 - 40, game.height() / 2, winner .. " Wins!", true)
+            renderer.text_scaled(game.width(, 2) / 2 - 60, game.height() / 2 + 20, "Tap to Menu", true)
+        end
+    end
+end
+
+function update_puck()
+    -- Move puck
+    game.vars.puck_x = game.vars.puck_x + game.vars.puck_vel_x
+    game.vars.puck_y = game.vars.puck_y + game.vars.puck_vel_y
+    
+    -- Bounce off top/bottom
+    if game.vars.puck_y - PUCK_RADIUS < 0 or game.vars.puck_y + PUCK_RADIUS > game.height() then
+        game.vars.puck_vel_y = -game.vars.puck_vel_y
+        game.vars.puck_y = math.max(PUCK_RADIUS, math.min(game.height() - PUCK_RADIUS, game.vars.puck_y))
+    end
+    
+    -- Goal: left side
+    if game.vars.puck_x < 0 then
+        game.vars.paddle_right_score = game.vars.paddle_right_score + 1
+        reset_puck()
+    end
+    
+    -- Goal: right side
+    if game.vars.puck_x > game.width() then
+        game.vars.paddle_left_score = game.vars.paddle_left_score + 1
+        reset_puck()
+    end
+end
+
+function check_collisions()
+    -- Left paddle collision
+    if game.vars.puck_x - PUCK_RADIUS < 5 + PADDLE_WIDTH then
+        if game.vars.puck_y > game.vars.paddle_left_y and game.vars.puck_y < game.vars.paddle_left_y + PADDLE_HEIGHT then
+            if game.vars.puck_vel_x < 0 then
+                game.vars.puck_vel_x = -game.vars.puck_vel_x + 0.5  -- Speed up slightly
+                
+                -- Add spin
+                local hit_pos = (game.vars.puck_y - game.vars.paddle_left_y) / PADDLE_HEIGHT
+                game.vars.puck_vel_y = (hit_pos - 0.5) * 6
+            end
+        end
+    end
+    
+    -- Right paddle collision
+    if game.vars.puck_x + PUCK_RADIUS > game.width() - 5 - PADDLE_WIDTH then
+        if game.vars.puck_y > game.vars.paddle_right_y and game.vars.puck_y < game.vars.paddle_right_y + PADDLE_HEIGHT then
+            if game.vars.puck_vel_x > 0 then
+                game.vars.puck_vel_x = -game.vars.puck_vel_x - 0.5  -- Speed up slightly
+                
+                -- Add spin
+                local hit_pos = (game.vars.puck_y - game.vars.paddle_right_y) / PADDLE_HEIGHT
+                game.vars.puck_vel_y = (hit_pos - 0.5) * 6
+            end
+        end
+    end
+end
+
+function reset_puck()
+    game.vars.puck_x = game.width() / 2
+    game.vars.puck_y = game.height() / 2
+    game.vars.puck_vel_x = PUCK_SPEED * (math.random() > 0.5 and 1 or -1)
+    game.vars.puck_vel_y = (math.random() - 0.5) * 2
+end
+
+function reset_game()
+    game.vars.paddle_left_y = (game.height() / 2) - (PADDLE_HEIGHT / 2)
+    game.vars.paddle_left_score = 0
+    game.vars.paddle_right_y = (game.height() / 2) - (PADDLE_HEIGHT / 2)
+    game.vars.paddle_right_score = 0
+    reset_puck()
+end

games/lua_examples/asteroids.lua

@@ -0,0 +1,284 @@
+-- NAME: Asteroids
+-- DESC: Destroy asteroids, avoid collisions
+
+-- Game states
+local STATE_MENU = 0
+local STATE_PLAYING = 1
+local STATE_GAME_OVER = 2
+
+-- Game constants
+local SHIP_SPEED = 2
+local SHIP_ROTATION_SPEED = 8
+local BULLET_SPEED = 5
+local ASTEROID_SPAWN_RATE = 120
+local ASTEROID_SPEEDS = {1.5, 2, 2.5, 3}
+
+function init()
+    game.vars.state = STATE_MENU
+    game.vars.score = 0
+    game.vars.level = 1
+    
+    -- Ship
+    game.vars.ship_x = game.width() / 2
+    game.vars.ship_y = game.height() / 2
+    game.vars.ship_angle = 0  -- Radians
+    game.vars.ship_vel_x = 0
+    game.vars.ship_vel_y = 0
+    game.vars.thrusting = false
+    
+    -- Bullets
+    game.vars.bullets = {}
+    game.vars.bullet_cooldown = 0
+    
+    -- Asteroids
+    game.vars.asteroids = {}
+    game.vars.frame_count = 0
+    
+    -- Enable continuous updates
+    game.set_frame_updates(true)
+    
+    print("Asteroids initialized")
+end
+
+function update(event)
+    local state = game.vars.state
+    
+    if state == STATE_MENU then
+        if event.type == INPUT.TOUCH_DOWN or event.type == INPUT.BUTTON_0 or event.type == INPUT.BUTTON_1 then
+            reset_game()
+            game.vars.state = STATE_PLAYING
+            return true
+        end
+    
+    elseif state == STATE_PLAYING then
+        -- Handle input
+        if event.type == INPUT.TOUCH_DOWN or event.type == INPUT.TOUCH_MOVE then
+            if event.x < game.width() / 2 then
+                -- Left side: rotate counter-clockwise
+                game.vars.ship_angle = game.vars.ship_angle - SHIP_ROTATION_SPEED * 0.017
+            else
+                -- Right side: rotate clockwise
+                game.vars.ship_angle = game.vars.ship_angle + SHIP_ROTATION_SPEED * 0.017
+            end
+            
+            -- Thrust
+            game.vars.thrusting = true
+        else
+            game.vars.thrusting = false
+        end
+        
+        -- Update physics on frame tick
+        if event.type == INPUT.FRAME_TICK then
+            update_ship()
+            update_bullets()
+            update_asteroids()
+            check_collisions()
+            
+            -- Spawn asteroids
+            game.vars.frame_count = game.vars.frame_count + 1
+            if game.vars.frame_count >= ASTEROID_SPAWN_RATE then
+                spawn_asteroid(game.width() / 2, game.height() / 2, 3)
+                game.vars.frame_count = 0
+            end
+            
+            return true
+        end
+    
+    elseif state == STATE_GAME_OVER then
+        if event.type == INPUT.TOUCH_DOWN or event.type == INPUT.BUTTON_0 or event.type == INPUT.BUTTON_1 then
+            game.vars.state = STATE_MENU
+            return true
+        end
+    end
+    
+    return false
+end
+
+function draw()
+    renderer.clear(false)  -- Black background
+    
+    local state = game.vars.state
+    
+    if state == STATE_MENU then
+        renderer.text_scaled(game.width(, 2) / 2 - 35, game.height() / 2 - 30, "ASTEROIDS", true)
+        renderer.text_scaled(game.width(, 2) / 2 - 50, game.height() / 2, "Tap to Start", true)
+    
+    elseif state == STATE_PLAYING or state == STATE_GAME_OVER then
+        -- Draw asteroids (convert to integers)
+        for i = 1, #game.vars.asteroids do
+            local ast = game.vars.asteroids[i]
+            renderer.circle(math.floor(ast.x + 0.5), math.floor(ast.y + 0.5), ast.size, true, false)
+        end
+        
+        -- Draw bullets
+        for i = 1, #game.vars.bullets do
+            local bullet = game.vars.bullets[i]
+            renderer.pixel(bullet.x, bullet.y, true)
+        end
+        
+        -- Draw ship
+        local ship_size = 6
+        local nose_x = game.vars.ship_x + math.cos(game.vars.ship_angle) * ship_size
+        local nose_y = game.vars.ship_y + math.sin(game.vars.ship_angle) * ship_size
+        local back_x = game.vars.ship_x - math.cos(game.vars.ship_angle) * (ship_size / 2)
+        local back_y = game.vars.ship_y - math.sin(game.vars.ship_angle) * (ship_size / 2)
+        
+        renderer.line(game.vars.ship_x, game.vars.ship_y, nose_x, nose_y, true, 1)
+        renderer.line(back_x, back_y, nose_x, nose_y, true, 1)
+        
+        -- Draw thrust indicator
+        if game.vars.thrusting then
+            local flame_x = game.vars.ship_x - math.cos(game.vars.ship_angle) * ship_size
+            local flame_y = game.vars.ship_y - math.sin(game.vars.ship_angle) * ship_size
+            renderer.line(game.vars.ship_x, game.vars.ship_y, flame_x, flame_y, true, 1)
+        end
+        
+        -- Draw score
+        renderer.text_scaled(10, 10, "Score: " .. tostring(game.vars.score, 2), true)
+        renderer.text_scaled(10, 20, "Level: " .. tostring(game.vars.level, 2), true)
+        
+        if state == STATE_GAME_OVER then
+            renderer.text_scaled(game.width(, 2) / 2 - 40, game.height() / 2, "GAME OVER", true)
+            renderer.text_scaled(game.width(, 2) / 2 - 50, game.height() / 2 + 20, "Tap to Menu", true)
+        end
+    end
+end
+
+function update_ship()
+    if game.vars.thrusting then
+        game.vars.ship_vel_x = game.vars.ship_vel_x + math.cos(game.vars.ship_angle) * SHIP_SPEED
+        game.vars.ship_vel_y = game.vars.ship_vel_y + math.sin(game.vars.ship_angle) * SHIP_SPEED
+    end
+    
+    -- Friction
+    game.vars.ship_vel_x = game.vars.ship_vel_x * 0.98
+    game.vars.ship_vel_y = game.vars.ship_vel_y * 0.98
+    
+    -- Move ship
+    game.vars.ship_x = game.vars.ship_x + game.vars.ship_vel_x
+    game.vars.ship_y = game.vars.ship_y + game.vars.ship_vel_y
+    
+    -- Wrap around screen
+    if game.vars.ship_x < 0 then game.vars.ship_x = game.width() end
+    if game.vars.ship_x > game.width() then game.vars.ship_x = 0 end
+    if game.vars.ship_y < 0 then game.vars.ship_y = game.height() end
+    if game.vars.ship_y > game.height() then game.vars.ship_y = 0 end
+end
+
+function update_bullets()
+    -- Update existing bullets
+    for i = #game.vars.bullets, 1, -1 do
+        local bullet = game.vars.bullets[i]
+        bullet.x = bullet.x + bullet.vel_x
+        bullet.y = bullet.y + bullet.vel_y
+        
+        -- Remove if off-screen
+        if bullet.x < 0 or bullet.x > game.width() or bullet.y < 0 or bullet.y > game.height() then
+            table.remove(game.vars.bullets, i)
+        end
+    end
+    
+    -- Fire bullet
+    game.vars.bullet_cooldown = math.max(0, game.vars.bullet_cooldown - 1)
+    if game.vars.thrusting and game.vars.bullet_cooldown == 0 then
+        local bullet_x = game.vars.ship_x + math.cos(game.vars.ship_angle) * 8
+        local bullet_y = game.vars.ship_y + math.sin(game.vars.ship_angle) * 8
+        
+        table.insert(game.vars.bullets, {
+            x = bullet_x,
+            y = bullet_y,
+            vel_x = math.cos(game.vars.ship_angle) * BULLET_SPEED + game.vars.ship_vel_x,
+            vel_y = math.sin(game.vars.ship_angle) * BULLET_SPEED + game.vars.ship_vel_y
+        })
+        
+        game.vars.bullet_cooldown = 5
+    end
+end
+
+function update_asteroids()
+    for i = 1, #game.vars.asteroids do
+        local ast = game.vars.asteroids[i]
+        ast.x = ast.x + ast.vel_x
+        ast.y = ast.y + ast.vel_y
+        
+        -- Wrap around screen
+        if ast.x < -ast.size then ast.x = game.width() + ast.size end
+        if ast.x > game.width() + ast.size then ast.x = -ast.size end
+        if ast.y < -ast.size then ast.y = game.height() + ast.size end
+        if ast.y > game.height() + ast.size then ast.y = -ast.size end
+    end
+end
+
+function check_collisions()
+    -- Bullet-asteroid collisions
+    for b = #game.vars.bullets, 1, -1 do
+        local bullet = game.vars.bullets[b]
+        for a = #game.vars.asteroids, 1, -1 do
+            local ast = game.vars.asteroids[a]
+            
+            local dx = bullet.x - ast.x
+            local dy = bullet.y - ast.y
+            local dist = math.sqrt(dx * dx + dy * dy)
+            
+            if dist < ast.size then
+                -- Hit!
+                table.remove(game.vars.bullets, b)
+                table.remove(game.vars.asteroids, a)
+                game.vars.score = game.vars.score + (4 - ast.size) * 50
+                
+                -- Spawn smaller asteroids
+                if ast.size > 1 then
+                    for _ = 1, 2 do
+                        spawn_asteroid(ast.x, ast.y, ast.size - 1)
+                    end
+                end
+                
+                break
+            end
+        end
+    end
+    
+    -- Ship-asteroid collisions
+    for i = 1, #game.vars.asteroids do
+        local ast = game.vars.asteroids[i]
+        
+        local dx = game.vars.ship_x - ast.x
+        local dy = game.vars.ship_y - ast.y
+        local dist = math.sqrt(dx * dx + dy * dy)
+        
+        if dist < ast.size + 6 then
+            game.vars.state = STATE_GAME_OVER
+        end
+    end
+end
+
+function spawn_asteroid(x, y, size)
+    if size < 1 then return end
+    
+    local speed = ASTEROID_SPEEDS[size]
+    local angle = math.random() * math.pi * 2
+    
+    table.insert(game.vars.asteroids, {
+        x = x,
+        y = y,
+        size = size,
+        vel_x = math.cos(angle) * speed,
+        vel_y = math.sin(angle) * speed
+    })
+end
+
+function reset_game()
+    game.vars.score = 0
+    game.vars.level = 1
+    game.vars.ship_x = game.width() / 2
+    game.vars.ship_y = game.height() / 2
+    game.vars.ship_angle = 0
+    game.vars.ship_vel_x = 0
+    game.vars.ship_vel_y = 0
+    game.vars.bullets = {}
+    game.vars.asteroids = {}
+    game.vars.frame_count = 0
+    
+    spawn_asteroid(game.width() / 2 - 40, game.height() / 2 - 40, 3)
+    spawn_asteroid(game.width() / 2 + 40, game.height() / 2 + 40, 3)
+end

games/lua_examples/ball.lua

@@ -14,6 +14,9 @@ function init()
     game.vars.radius = 10
     game.vars.frame_count = 0
     
+    -- Enable continuous frame updates for smooth animation
+    game.set_frame_updates(true)
+    
     print("Bouncing Ball initialized")
 end
 
@@ -28,8 +31,8 @@ function update(event)
         return true
     end
     
-    -- Update physics if running
-    if game.vars.state == STATE_RUNNING then
+    -- Update physics if running (on any frame tick)
+    if event.type == INPUT.FRAME_TICK and game.vars.state == STATE_RUNNING then
         -- Move ball
         game.vars.ball_x = game.vars.ball_x + game.vars.vel_x
         game.vars.ball_y = game.vars.ball_y + game.vars.vel_y
@@ -55,27 +58,27 @@ end
 function draw()
     renderer.clear(false)
     
-    -- Draw ball
-    renderer.circle(game.vars.ball_x, game.vars.ball_y, game.vars.radius, true, true)
+    -- Draw ball (convert to integers)
+    renderer.circle(math.floor(game.vars.ball_x + 0.5), math.floor(game.vars.ball_y + 0.5), game.vars.radius, true, true)
     
     -- Draw trail (previous positions)
     local trail_radius = game.vars.radius - 2
     if trail_radius > 2 then
-        renderer.circle(game.vars.ball_x - game.vars.vel_x, 
-                       game.vars.ball_y - game.vars.vel_y, 
+        renderer.circle(math.floor(game.vars.ball_x - game.vars.vel_x + 0.5), 
+                       math.floor(game.vars.ball_y - game.vars.vel_y + 0.5), 
                        trail_radius, true, false)
     end
     
     -- Draw status
     if game.vars.state == STATE_PAUSED then
-        renderer.text(10, 10, "PAUSED - Tap to start", true)
+        renderer.text_scaled(10, 10, "PAUSED - Tap to start", true, 2)
     else
-        renderer.text(10, 10, "Frames: " .. tostring(game.vars.frame_count), true)
-        renderer.text(10, 25, "Tap to pause", true)
+        renderer.text_scaled(10, 10, "Frames: " .. tostring(game.vars.frame_count, 2), true)
+        renderer.text_scaled(10, 25, "Tap to pause", true, 2)
     end
     
     -- Draw velocity vector
     local arrow_x = game.vars.ball_x + game.vars.vel_x * 3
     local arrow_y = game.vars.ball_y + game.vars.vel_y * 3
-    renderer.line(game.vars.ball_x, game.vars.ball_y, arrow_x, arrow_y, true, 2)
+    renderer.line(math.floor(game.vars.ball_x + 0.5), math.floor(game.vars.ball_y + 0.5), math.floor(arrow_x + 0.5), math.floor(arrow_y + 0.5), true, 2)
 end

games/lua_examples/breakout.lua

@@ -0,0 +1,221 @@
+-- NAME: Breakout
+-- DESC: Break bricks with bouncing ball and paddle
+
+-- Game states
+local STATE_MENU = 0
+local STATE_PLAYING = 1
+local STATE_GAME_OVER = 2
+local STATE_LEVEL_COMPLETE = 3
+
+-- Game constants
+local PADDLE_WIDTH = 40
+local PADDLE_HEIGHT = 6
+local BALL_RADIUS = 4
+local BRICK_WIDTH = 16
+local BRICK_HEIGHT = 6
+local BRICK_COLS = 16
+local BRICK_ROWS = 5
+local BRICK_START_Y = 20
+
+function init()
+    game.vars.state = STATE_MENU
+    game.vars.score = 0
+    game.vars.lives = 3
+    
+    -- Paddle
+    game.vars.paddle_x = (game.width() / 2) - (PADDLE_WIDTH / 2)
+    
+    -- Ball
+    game.vars.ball_x = game.width() / 2
+    game.vars.ball_y = game.height() - 30
+    game.vars.ball_vel_x = 2
+    game.vars.ball_vel_y = -3
+    
+    -- Bricks (true = exists, false = broken)
+    game.vars.bricks = {}
+    game.vars.bricks_remaining = 0
+    
+    -- Enable continuous updates
+    game.set_frame_updates(true)
+    
+    print("Breakout initialized")
+end
+
+function update(event)
+    local state = game.vars.state
+    
+    if state == STATE_MENU then
+        if event.type == INPUT.TOUCH_DOWN or event.type == INPUT.BUTTON_0 or event.type == INPUT.BUTTON_1 then
+            reset_game()
+            game.vars.state = STATE_PLAYING
+            return true
+        end
+    
+    elseif state == STATE_PLAYING then
+        -- Handle paddle input
+        if event.type == INPUT.TOUCH_DOWN or event.type == INPUT.TOUCH_MOVE then
+            game.vars.paddle_x = math.max(0, math.min(game.width() - PADDLE_WIDTH, event.x - PADDLE_WIDTH / 2))
+        end
+        
+        -- Update physics on frame tick
+        if event.type == INPUT.FRAME_TICK then
+            update_ball()
+            check_brick_collisions()
+            
+            -- Check win
+            if game.vars.bricks_remaining <= 0 then
+                game.vars.state = STATE_LEVEL_COMPLETE
+            end
+            
+            return true
+        end
+    
+    elseif state == STATE_GAME_OVER then
+        if event.type == INPUT.TOUCH_DOWN or event.type == INPUT.BUTTON_0 or event.type == INPUT.BUTTON_1 then
+            game.vars.state = STATE_MENU
+            return true
+        end
+    
+    elseif state == STATE_LEVEL_COMPLETE then
+        if event.type == INPUT.TOUCH_DOWN or event.type == INPUT.BUTTON_0 or event.type == INPUT.BUTTON_1 then
+            game.vars.state = STATE_MENU
+            return true
+        end
+    end
+    
+    return false
+end
+
+function draw()
+    renderer.clear(false)  -- Black background
+    
+    local state = game.vars.state
+    
+    if state == STATE_MENU then
+        renderer.text_scaled(game.width(, 2) / 2 - 30, game.height() / 2 - 30, "BREAKOUT", true)
+        renderer.text_scaled(game.width(, 2) / 2 - 50, game.height() / 2, "Tap to Start", true)
+    
+    elseif state == STATE_PLAYING then
+        -- Draw bricks
+        for row = 1, BRICK_ROWS do
+            for col = 1, BRICK_COLS do
+                local idx = (row - 1) * BRICK_COLS + col
+                if game.vars.bricks[idx] then
+                    local x = (col - 1) * BRICK_WIDTH
+                    local y = BRICK_START_Y + (row - 1) * BRICK_HEIGHT
+                    renderer.rect(x, y, BRICK_WIDTH, BRICK_HEIGHT, true, true)
+                end
+            end
+        end
+        
+        -- Draw paddle
+        renderer.rect(game.vars.paddle_x, game.height() - PADDLE_HEIGHT - 2, PADDLE_WIDTH, PADDLE_HEIGHT, true, true)
+        
+        -- Draw ball (convert to integers)
+        renderer.circle(math.floor(game.vars.ball_x + 0.5), math.floor(game.vars.ball_y + 0.5), BALL_RADIUS, true, true)
+        
+        -- Draw score and lives
+        renderer.text_scaled(5, 5, "Score: " .. tostring(game.vars.score, 2), true)
+        renderer.text_scaled(game.width(, 2) - 50, 5, "Lives: " .. tostring(game.vars.lives), true)
+    
+    elseif state == STATE_GAME_OVER then
+        renderer.text_scaled(game.width(, 2) / 2 - 40, game.height() / 2 - 20, "GAME OVER", true)
+        renderer.text_scaled(game.width(, 2) / 2 - 30, game.height() / 2, "Score: " .. tostring(game.vars.score), true)
+        renderer.text_scaled(game.width(, 2) / 2 - 60, game.height() / 2 + 20, "Tap to Menu", true)
+    
+    elseif state == STATE_LEVEL_COMPLETE then
+        renderer.text_scaled(game.width(, 2) / 2 - 50, game.height() / 2 - 20, "LEVEL COMPLETE!", true)
+        renderer.text_scaled(game.width(, 2) / 2 - 30, game.height() / 2, "Score: " .. tostring(game.vars.score), true)
+        renderer.text_scaled(game.width(, 2) / 2 - 60, game.height() / 2 + 20, "Tap to Menu", true)
+    end
+end
+
+function update_ball()
+    -- Move ball
+    game.vars.ball_x = game.vars.ball_x + game.vars.ball_vel_x
+    game.vars.ball_y = game.vars.ball_y + game.vars.ball_vel_y
+    
+    -- Bounce off walls
+    if game.vars.ball_x - BALL_RADIUS < 0 or game.vars.ball_x + BALL_RADIUS > game.width() then
+        game.vars.ball_vel_x = -game.vars.ball_vel_x
+        game.vars.ball_x = math.max(BALL_RADIUS, math.min(game.width() - BALL_RADIUS, game.vars.ball_x))
+    end
+    
+    -- Bounce off top
+    if game.vars.ball_y - BALL_RADIUS < 0 then
+        game.vars.ball_vel_y = -game.vars.ball_vel_y
+        game.vars.ball_y = BALL_RADIUS
+    end
+    
+    -- Check paddle collision
+    if game.vars.ball_y + BALL_RADIUS > game.height() - PADDLE_HEIGHT - 2 then
+        if game.vars.ball_x > game.vars.paddle_x and game.vars.ball_x < game.vars.paddle_x + PADDLE_WIDTH then
+            if game.vars.ball_vel_y > 0 then
+                game.vars.ball_vel_y = -game.vars.ball_vel_y
+                
+                -- Add spin based on hit position
+                local hit_pos = (game.vars.ball_x - game.vars.paddle_x) / PADDLE_WIDTH
+                game.vars.ball_vel_x = (hit_pos - 0.5) * 4
+            end
+        end
+    end
+    
+    -- Fall off bottom = lose life
+    if game.vars.ball_y > game.height() then
+        game.vars.lives = game.vars.lives - 1
+        if game.vars.lives <= 0 then
+            game.vars.state = STATE_GAME_OVER
+        else
+            reset_ball()
+        end
+    end
+end
+
+function check_brick_collisions()
+    for row = 1, BRICK_ROWS do
+        for col = 1, BRICK_COLS do
+            local idx = (row - 1) * BRICK_COLS + col
+            if game.vars.bricks[idx] then
+                local brick_x = (col - 1) * BRICK_WIDTH
+                local brick_y = BRICK_START_Y + (row - 1) * BRICK_HEIGHT
+                
+                -- Simple AABB collision with ball
+                if game.vars.ball_x + BALL_RADIUS > brick_x and
+                   game.vars.ball_x - BALL_RADIUS < brick_x + BRICK_WIDTH and
+                   game.vars.ball_y + BALL_RADIUS > brick_y and
+                   game.vars.ball_y - BALL_RADIUS < brick_y + BRICK_HEIGHT then
+                    
+                    -- Destroy brick
+                    game.vars.bricks[idx] = false
+                    game.vars.bricks_remaining = game.vars.bricks_remaining - 1
+                    game.vars.score = game.vars.score + 10
+                    
+                    -- Bounce ball (simple: vertical bounce)
+                    game.vars.ball_vel_y = -game.vars.ball_vel_y
+                end
+            end
+        end
+    end
+end
+
+function reset_ball()
+    game.vars.ball_x = game.vars.paddle_x + PADDLE_WIDTH / 2
+    game.vars.ball_y = game.height() - 30
+    game.vars.ball_vel_x = 2
+    game.vars.ball_vel_y = -3
+end
+
+function reset_game()
+    game.vars.score = 0
+    game.vars.lives = 3
+    game.vars.paddle_x = (game.width() / 2) - (PADDLE_WIDTH / 2)
+    
+    -- Create brick grid
+    game.vars.bricks = {}
+    game.vars.bricks_remaining = BRICK_ROWS * BRICK_COLS
+    for i = 1, BRICK_ROWS * BRICK_COLS do
+        game.vars.bricks[i] = true
+    end
+    
+    reset_ball()
+end

games/lua_examples/counter.lua

@@ -29,21 +29,21 @@ function draw()
     renderer.clear(true)
     
     -- Draw title
-    renderer.text(20, 20, "Touch Counter", true)
+    renderer.text_scaled(20, 20, "Touch Counter", true, 2)
     
     -- Draw count (centered)
     local count_text = "Count: " .. tostring(game.vars.count)
-    renderer.text(game.width() / 2 - 40, game.height() / 2 - 10, count_text, true)
+    renderer.text_scaled(game.width(, 2) / 2 - 40, game.height() / 2 - 10, count_text, true)
     
     -- Draw last touch position
     if game.vars.count > 0 then
         local pos_text = "Last: (" .. tostring(game.vars.last_x) .. ", " .. tostring(game.vars.last_y) .. ")"
-        renderer.text(20, game.height() - 30, pos_text, true)
+        renderer.text_scaled(20, game.height(, 2) - 30, pos_text, true)
         
-        -- Draw marker at last touch
-        renderer.circle(game.vars.last_x, game.vars.last_y, 5, true, false)
+        -- Draw marker at last touch (convert to integers)
+        renderer.circle(math.floor(game.vars.last_x + 0.5), math.floor(game.vars.last_y + 0.5), 5, true, false)
     end
     
     -- Draw instructions
-    renderer.text(20, 50, "Tap screen to increment", true)
+    renderer.text_scaled(20, 50, "Tap screen to increment", true, 2)
 end

games/lua_examples/flappy_bird.lua

@@ -0,0 +1,168 @@
+-- NAME: Flappy Bird
+-- DESC: Tap to flap, avoid pipes
+
+-- Game states
+local STATE_MENU = 0
+local STATE_PLAYING = 1
+local STATE_GAME_OVER = 2
+
+-- Game constants
+local BIRD_SIZE = 8
+local BIRD_GRAVITY = 0.3
+local BIRD_FLAP_POWER = -7
+local PIPE_WIDTH = 20
+local PIPE_GAP = 50
+local PIPE_SPEED = 3
+local SPAWN_RATE = 80  -- Frames between pipe spawns
+
+function init()
+    game.vars.state = STATE_MENU
+    game.vars.score = 0
+    game.vars.frame_count = 0
+    
+    -- Bird
+    game.vars.bird_y = game.height() / 2
+    game.vars.bird_vel = 0
+    
+    -- Pipes (array of {x, gap_y})
+    game.vars.pipes = {}
+    game.vars.last_pipe_frame = 0
+    
+    -- Enable continuous updates
+    game.set_frame_updates(true)
+    
+    print("Flappy Bird initialized")
+end
+
+function update(event)
+    local state = game.vars.state
+    
+    if state == STATE_MENU then
+        if event.type == INPUT.TOUCH_DOWN or event.type == INPUT.BUTTON_0 or event.type == INPUT.BUTTON_1 then
+            reset_game()
+            game.vars.state = STATE_PLAYING
+            return true
+        end
+    
+    elseif state == STATE_PLAYING then
+        -- Handle flap input
+        if event.type == INPUT.TOUCH_DOWN or event.type == INPUT.BUTTON_0 or event.type == INPUT.BUTTON_1 then
+            game.vars.bird_vel = BIRD_FLAP_POWER
+        end
+        
+        -- Update physics on frame tick
+        if event.type == INPUT.FRAME_TICK then
+            update_bird()
+            update_pipes()
+            check_collisions()
+            return true
+        end
+    
+    elseif state == STATE_GAME_OVER then
+        if event.type == INPUT.TOUCH_DOWN or event.type == INPUT.BUTTON_0 or event.type == INPUT.BUTTON_1 then
+            game.vars.state = STATE_MENU
+            return true
+        end
+    end
+    
+    return false
+end
+
+function draw()
+    renderer.clear(false)  -- Black background
+    
+    local state = game.vars.state
+    
+    if state == STATE_MENU then
+        renderer.text_scaled(game.width(, 2) / 2 - 40, game.height() / 2 - 30, "FLAPPY BIRD", true)
+        renderer.text_scaled(game.width(, 2) / 2 - 50, game.height() / 2, "Tap to Start", true)
+    
+    elseif state == STATE_PLAYING then
+        -- Draw bird (convert to integer)
+        renderer.circle(20, math.floor(game.vars.bird_y + 0.5), BIRD_SIZE, true, true)
+        
+        -- Draw pipes
+        for i = 1, #game.vars.pipes do
+            local pipe = game.vars.pipes[i]
+            
+            -- Top pipe
+            renderer.rect(pipe.x, 0, PIPE_WIDTH, pipe.gap_y, true, true)
+            
+            -- Bottom pipe
+            local bottom_start = pipe.gap_y + PIPE_GAP
+            renderer.rect(pipe.x, bottom_start, PIPE_WIDTH, game.height() - bottom_start, true, true)
+        end
+        
+        -- Draw score
+        renderer.text_scaled(10, 10, "Score: " .. tostring(game.vars.score, 2), true)
+    
+    elseif state == STATE_GAME_OVER then
+        renderer.text_scaled(game.width(, 2) / 2 - 40, game.height() / 2 - 30, "GAME OVER", true)
+        renderer.text_scaled(game.width(, 2) / 2 - 30, game.height() / 2, "Score: " .. tostring(game.vars.score), true)
+        renderer.text_scaled(game.width(, 2) / 2 - 60, game.height() / 2 + 20, "Tap to Restart", true)
+    end
+end
+
+function update_bird()
+    -- Apply gravity
+    game.vars.bird_vel = game.vars.bird_vel + BIRD_GRAVITY
+    game.vars.bird_y = game.vars.bird_y + game.vars.bird_vel
+    
+    -- Clamp to screen (game over if hit top/bottom)
+    if game.vars.bird_y - BIRD_SIZE < 0 or game.vars.bird_y + BIRD_SIZE > game.height() then
+        game.vars.state = STATE_GAME_OVER
+    end
+end
+
+function update_pipes()
+    game.vars.frame_count = game.vars.frame_count + 1
+    
+    -- Spawn new pipe
+    if game.vars.frame_count - game.vars.last_pipe_frame >= SPAWN_RATE then
+        local gap_y = math.random(30, game.height() - PIPE_GAP - 30)
+        table.insert(game.vars.pipes, {x = game.width(), gap_y = gap_y})
+        game.vars.last_pipe_frame = game.vars.frame_count
+    end
+    
+    -- Move and remove off-screen pipes
+    for i = #game.vars.pipes, 1, -1 do
+        local pipe = game.vars.pipes[i]
+        pipe.x = pipe.x - PIPE_SPEED
+        
+        -- Score when pipe passes bird
+        if pipe.x == 20 then
+            game.vars.score = game.vars.score + 1
+        end
+        
+        -- Remove if off-screen
+        if pipe.x < -PIPE_WIDTH then
+            table.remove(game.vars.pipes, i)
+        end
+    end
+end
+
+function check_collisions()
+    -- Check collision with pipes
+    for i = 1, #game.vars.pipes do
+        local pipe = game.vars.pipes[i]
+        
+        -- Bird hitbox: circle at (20, bird_y) with radius BIRD_SIZE
+        -- Check if within pipe's X range
+        if 20 + BIRD_SIZE > pipe.x and 20 - BIRD_SIZE < pipe.x + PIPE_WIDTH then
+            -- Check Y collision
+            if game.vars.bird_y - BIRD_SIZE < pipe.gap_y or 
+               game.vars.bird_y + BIRD_SIZE > pipe.gap_y + PIPE_GAP then
+                game.vars.state = STATE_GAME_OVER
+            end
+        end
+    end
+end
+
+function reset_game()
+    game.vars.score = 0
+    game.vars.bird_y = game.height() / 2
+    game.vars.bird_vel = 0
+    game.vars.pipes = {}
+    game.vars.frame_count = 0
+    game.vars.last_pipe_frame = 0
+end

games/lua_examples/lunar_lander.lua

@@ -0,0 +1,173 @@
+-- NAME: Lunar Lander
+-- DESC: Land safely with limited fuel
+
+-- Game states
+local STATE_MENU = 0
+local STATE_PLAYING = 1
+local STATE_LANDED = 2
+local STATE_CRASHED = 3
+
+-- Game constants
+local GRAVITY = 0.15
+local THRUST_POWER = 0.3
+local MAX_FUEL = 100
+local SAFE_LANDING_SPEED = 1.5
+
+function init()
+    game.vars.state = STATE_MENU
+    game.vars.score = 0
+    
+    -- Lander
+    game.vars.lander_x = game.width() / 2
+    game.vars.lander_y = 10
+    game.vars.lander_vel_y = 0
+    game.vars.fuel = MAX_FUEL
+    game.vars.thrusting = false
+    
+    -- Terrain
+    game.vars.landing_zone_x = game.width() / 2 - 20
+    game.vars.landing_zone_w = 40
+    game.vars.terrain_y = game.height() - 15
+    
+    -- Enable continuous updates
+    game.set_frame_updates(true)
+    
+    print("Lunar Lander initialized")
+end
+
+function update(event)
+    local state = game.vars.state
+    
+    if state == STATE_MENU then
+        if event.type == INPUT.TOUCH_DOWN or event.type == INPUT.BUTTON_0 or event.type == INPUT.BUTTON_1 then
+            reset_game()
+            game.vars.state = STATE_PLAYING
+            return true
+        end
+    
+    elseif state == STATE_PLAYING then
+        -- Handle thrust input
+        if event.type == INPUT.TOUCH_DOWN or event.type == INPUT.TOUCH_MOVE then
+            if game.vars.fuel > 0 then
+                game.vars.thrusting = true
+                game.vars.fuel = game.vars.fuel - 1
+            else
+                game.vars.thrusting = false
+            end
+        else
+            game.vars.thrusting = false
+        end
+        
+        -- Update physics on frame tick
+        if event.type == INPUT.FRAME_TICK then
+            update_lander()
+            check_landing()
+            return true
+        end
+    
+    elseif state == STATE_LANDED or state == STATE_CRASHED then
+        if event.type == INPUT.TOUCH_DOWN or event.type == INPUT.BUTTON_0 or event.type == INPUT.BUTTON_1 then
+            game.vars.state = STATE_MENU
+            return true
+        end
+    end
+    
+    return false
+end
+
+function draw()
+    renderer.clear(false)
+    
+    local state = game.vars.state
+    
+    if state == STATE_MENU then
+        renderer.text_scaled(game.width(, 2) / 2 - 50, game.height() / 2 - 30, "LUNAR LANDER", true)
+        renderer.text_scaled(game.width(, 2) / 2 - 70, game.height() / 2 - 5, "Land in the zone safely", true)
+        renderer.text_scaled(game.width(, 2) / 2 - 50, game.height() / 2 + 20, "Tap to Start", true)
+    
+    elseif state == STATE_PLAYING or state == STATE_LANDED or state == STATE_CRASHED then
+        -- Draw terrain
+        renderer.rect(0, game.vars.terrain_y, game.width(), game.height() - game.vars.terrain_y, true, true)
+        
+        -- Draw landing zone (outline)
+        renderer.rect(game.vars.landing_zone_x, game.vars.terrain_y - 2, game.vars.landing_zone_w, 2, true, true)
+        
+        -- Draw lander (triangle)
+        local lander_w = 8
+        local lander_h = 6
+        renderer.line(game.vars.lander_x - lander_w / 2, game.vars.lander_y + lander_h, 
+                     game.vars.lander_x, game.vars.lander_y, true, 1)
+        renderer.line(game.vars.lander_x, game.vars.lander_y, 
+                     game.vars.lander_x + lander_w / 2, game.vars.lander_y + lander_h, true, 1)
+        renderer.line(game.vars.lander_x - lander_w / 2, game.vars.lander_y + lander_h,
+                     game.vars.lander_x + lander_w / 2, game.vars.lander_y + lander_h, true, 1)
+        
+        -- Draw thrust flame
+        if game.vars.thrusting then
+            renderer.line(game.vars.lander_x - 2, game.vars.lander_y + lander_h,
+                         game.vars.lander_x - 1, game.vars.lander_y + lander_h + 3, true, 1)
+            renderer.line(game.vars.lander_x + 2, game.vars.lander_y + lander_h,
+                         game.vars.lander_x + 1, game.vars.lander_y + lander_h + 3, true, 1)
+        end
+        
+        -- Draw stats
+        renderer.text_scaled(5, 5, "Fuel: " .. tostring(math.floor(game.vars.fuel, 2)), true)
+        renderer.text_scaled(5, 15, "Speed: " .. tostring(math.floor(game.vars.lander_vel_y * 10, 2)), true)
+        
+        if state == STATE_LANDED then
+            renderer.text_scaled(game.width(, 2) / 2 - 40, game.height() / 2 - 20, "LANDED!", true)
+            renderer.text_scaled(game.width(, 2) / 2 - 30, game.height() / 2, "Score: " .. tostring(game.vars.score), true)
+            renderer.text_scaled(game.width(, 2) / 2 - 60, game.height() / 2 + 20, "Tap to Menu", true)
+        end
+        
+        if state == STATE_CRASHED then
+            renderer.text_scaled(game.width(, 2) / 2 - 40, game.height() / 2 - 20, "CRASHED!", true)
+            renderer.text_scaled(game.width(, 2) / 2 - 60, game.height() / 2 + 20, "Tap to Menu", true)
+        end
+    end
+end
+
+function update_lander()
+    -- Apply gravity
+    game.vars.lander_vel_y = game.vars.lander_vel_y + GRAVITY
+    
+    -- Apply thrust
+    if game.vars.thrusting then
+        game.vars.lander_vel_y = game.vars.lander_vel_y - THRUST_POWER
+    end
+    
+    -- Update position
+    game.vars.lander_y = game.vars.lander_y + game.vars.lander_vel_y
+end
+
+function check_landing()
+    -- Check if lander reached terrain
+    if game.vars.lander_y + 6 >= game.vars.terrain_y then
+        local lander_left = game.vars.lander_x - 4
+        local lander_right = game.vars.lander_x + 4
+        local zone_left = game.vars.landing_zone_x
+        local zone_right = game.vars.landing_zone_x + game.vars.landing_zone_w
+        
+        -- Check if in landing zone
+        if lander_left >= zone_left and lander_right <= zone_right then
+            -- Check landing speed
+            if game.vars.lander_vel_y <= SAFE_LANDING_SPEED then
+                game.vars.state = STATE_LANDED
+                game.vars.score = 100 + math.floor(game.vars.fuel)
+            else
+                game.vars.state = STATE_CRASHED
+            end
+        else
+            game.vars.state = STATE_CRASHED
+        end
+    end
+end
+
+function reset_game()
+    game.vars.lander_x = game.width() / 2
+    game.vars.lander_y = 10
+    game.vars.lander_vel_y = 0
+    game.vars.fuel = MAX_FUEL
+    game.vars.thrusting = false
+    game.vars.score = 0
+end

games/lua_examples/memory_match.lua

@@ -0,0 +1,223 @@
+-- NAME: Memory Match
+-- DESC: Find matching pairs
+
+-- Game states
+local STATE_MENU = 0
+local STATE_PLAYING = 1
+local STATE_GAME_OVER = 2
+
+-- Game constants
+local GRID_COLS = 4
+local GRID_ROWS = 4
+local FLIP_DURATION = 15  -- Frames to show flip animation
+
+-- Calculate card size based on screen size
+local function get_card_size()
+    -- Use available space with padding, based on smallest dimension
+    local min_dim = math.min(game.width(), game.height())
+    local padding = math.floor(min_dim / 8)
+    local available_w = game.width() - (padding * 2)
+    local available_h = game.height() - 80  -- Leave room for text
+    
+    -- Calculate based on grid
+    local card_width = math.floor(available_w / GRID_COLS)
+    local card_height = math.floor(available_h / GRID_ROWS)
+    
+    -- Use the smaller dimension for square cards
+    return math.min(card_width, card_height)
+end
+
+local function get_grid_start_x()
+    local card_size = get_card_size()
+    local grid_width = card_size * GRID_COLS
+    return math.floor((game.width() - grid_width) / 2)
+end
+
+local function get_grid_start_y()
+    return 60
+end
+
+function init()
+    game.vars.state = STATE_MENU
+    game.vars.score = 0
+    game.vars.moves = 0
+    
+    -- Card grid
+    game.vars.cards = {}  -- {id, face_up, matched}
+    game.vars.selected = {}  -- Indices of selected cards
+    game.vars.flip_frame = 0
+    game.vars.waiting = false  -- Waiting to flip back incorrect pair
+    
+    -- Enable continuous updates
+    game.set_frame_updates(true)
+    
+    print("Memory Match initialized")
+end
+
+function update(event)
+    local state = game.vars.state
+    
+    if state == STATE_MENU then
+        if event.type == INPUT.TOUCH_DOWN or event.type == INPUT.BUTTON_0 or event.type == INPUT.BUTTON_1 then
+            reset_game()
+            game.vars.state = STATE_PLAYING
+            return true
+        end
+    
+    elseif state == STATE_PLAYING then
+        -- Handle card selection
+        if event.type == INPUT.TOUCH_DOWN and not game.vars.waiting then
+            local card_idx = get_card_at(event.x, event.y)
+            if card_idx and not game.vars.cards[card_idx].matched and not game.vars.cards[card_idx].face_up then
+                -- Select card
+                game.vars.cards[card_idx].face_up = true
+                table.insert(game.vars.selected, card_idx)
+                
+                if #game.vars.selected == 2 then
+                    game.vars.moves = game.vars.moves + 1
+                    
+                    -- Check for match
+                    if game.vars.cards[game.vars.selected[1]].id == game.vars.cards[game.vars.selected[2]].id then
+                        -- Match!
+                        game.vars.cards[game.vars.selected[1]].matched = true
+                        game.vars.cards[game.vars.selected[2]].matched = true
+                        game.vars.score = game.vars.score + 1
+                        game.vars.selected = {}
+                        
+                        -- Check win
+                        if game.vars.score == (GRID_COLS * GRID_ROWS) / 2 then
+                            game.vars.state = STATE_GAME_OVER
+                        end
+                    else
+                        -- No match, wait then flip back
+                        game.vars.waiting = true
+                        game.vars.flip_frame = 0
+                    end
+                end
+                
+                return true
+            end
+        end
+        
+        -- Handle flip-back animation
+        if game.vars.waiting and event.type == INPUT.FRAME_TICK then
+            game.vars.flip_frame = game.vars.flip_frame + 1
+            
+            if game.vars.flip_frame >= FLIP_DURATION then
+                -- Flip cards back
+                game.vars.cards[game.vars.selected[1]].face_up = false
+                game.vars.cards[game.vars.selected[2]].face_up = false
+                game.vars.selected = {}
+                game.vars.waiting = false
+                game.vars.flip_frame = 0
+            end
+            
+            return true
+        end
+    
+    elseif state == STATE_GAME_OVER then
+        if event.type == INPUT.TOUCH_DOWN or event.type == INPUT.BUTTON_0 or event.type == INPUT.BUTTON_1 then
+            game.vars.state = STATE_MENU
+            return true
+        end
+    end
+    
+    return false
+end
+
+function draw()
+    renderer.clear(false)  -- Black background
+    
+    local state = game.vars.state
+    local card_size = get_card_size()
+    local start_x = get_grid_start_x()
+    local start_y = get_grid_start_y()
+    
+    if state == STATE_MENU then
+        renderer.text_scaled(game.width() / 2 - 40, game.height() / 2 - 40, "MEMORY MATCH", true, 2)
+        renderer.text_scaled(game.width() / 2 - 50, game.height() / 2 - 10, "Find all pairs", true, 2)
+        renderer.text_scaled(game.width() / 2 - 50, game.height() / 2 + 20, "Tap to Start", true, 2)
+    
+    elseif state == STATE_PLAYING or state == STATE_GAME_OVER then
+        -- Draw grid
+        for row = 0, GRID_ROWS - 1 do
+            for col = 0, GRID_COLS - 1 do
+                local idx = row * GRID_COLS + col + 1
+                local card = game.vars.cards[idx]
+                local x = start_x + col * card_size
+                local y = start_y + row * card_size
+                
+                if card.face_up or card.matched then
+                    -- Show card value
+                    renderer.rect(x, y, card_size, card_size, true, true)
+                    local text = tostring(card.id)
+                    renderer.text_scaled(x + math.floor(card_size / 2 - 2), y + math.floor(card_size / 2 - 2), text, false, 2)
+                else
+                    -- Face down (outline)
+                    renderer.rect(x, y, card_size, card_size, true, false)
+                end
+            end
+        end
+        
+        -- Draw stats
+        renderer.text_scaled(10, 10, "Pairs: " .. tostring(game.vars.score) .. "/" .. tostring((GRID_COLS * GRID_ROWS) / 2), true, 2)
+        renderer.text_scaled(10, 25, "Moves: " .. tostring(game.vars.moves), true, 2)
+        
+        if state == STATE_GAME_OVER then
+            renderer.text_scaled(game.width() / 2 - 40, 5, "YOU WIN!", true, 2)
+            renderer.text_scaled(game.width() / 2 - 50, game.height() - 20, "Tap to Menu", true, 2)
+        end
+    end
+end
+
+function get_card_at(x, y)
+    local card_size = get_card_size()
+    local start_x = get_grid_start_x()
+    local start_y = get_grid_start_y()
+    
+    for row = 0, GRID_ROWS - 1 do
+        for col = 0, GRID_COLS - 1 do
+            local card_x = start_x + col * card_size
+            local card_y = start_y + row * card_size
+            
+            if x >= card_x and x < card_x + card_size and
+               y >= card_y and y < card_y + card_size then
+                return row * GRID_COLS + col + 1
+            end
+        end
+    end
+    
+    return nil
+end
+
+function reset_game()
+    game.vars.score = 0
+    game.vars.moves = 0
+    game.vars.selected = {}
+    game.vars.flip_frame = 0
+    game.vars.waiting = false
+    
+    -- Create shuffled card pairs
+    local card_ids = {}
+    local num_pairs = (GRID_COLS * GRID_ROWS) / 2
+    for i = 1, num_pairs do
+        table.insert(card_ids, i)
+        table.insert(card_ids, i)
+    end
+    
+    -- Shuffle
+    for i = #card_ids, 2, -1 do
+        local j = math.random(1, i)
+        card_ids[i], card_ids[j] = card_ids[j], card_ids[i]
+    end
+    
+    -- Create card objects
+    game.vars.cards = {}
+    for i = 1, #card_ids do
+        game.vars.cards[i] = {
+            id = card_ids[i],
+            face_up = false,
+            matched = false
+        }
+    end
+end

games/lua_examples/pong.lua

@@ -0,0 +1,204 @@
+-- NAME: Pong
+-- DESC: Classic two-player Pong game
+
+-- Game states
+local STATE_MENU = 0
+local STATE_PLAYING = 1
+local STATE_GAME_OVER = 2
+
+-- Game constants
+local PADDLE_WIDTH = 8
+local PADDLE_HEIGHT = 40
+local BALL_RADIUS = 5
+local MAX_SCORE = 5
+
+-- Initialize game
+function init()
+    game.vars.state = STATE_MENU
+    game.vars.frame_count = 0
+    
+    -- Left paddle (player 1)
+    game.vars.paddle_left_y = (game.height() / 2) - (PADDLE_HEIGHT / 2)
+    game.vars.paddle_left_score = 0
+    
+    -- Right paddle (player 2)
+    game.vars.paddle_right_y = (game.height() / 2) - (PADDLE_HEIGHT / 2)
+    game.vars.paddle_right_score = 0
+    
+    -- Ball
+    game.vars.ball_x = game.width() / 2
+    game.vars.ball_y = game.height() / 2
+    game.vars.ball_vel_x = 3
+    game.vars.ball_vel_y = 2
+    
+    -- Enable continuous frame updates for smooth animation
+    game.set_frame_updates(true)
+    
+    print("Pong initialized")
+end
+
+-- Update game logic
+function update(event)
+    local state = game.vars.state
+    
+    -- State: MENU
+    if state == STATE_MENU then
+        if event.type == INPUT.TOUCH_DOWN or event.type == INPUT.BUTTON_0 or event.type == INPUT.BUTTON_1 then
+            reset_game()
+            game.vars.state = STATE_PLAYING
+            return true
+        end
+    
+    -- State: PLAYING
+    elseif state == STATE_PLAYING then
+        -- Handle paddle input via touch
+        if event.type == INPUT.TOUCH_DOWN or event.type == INPUT.TOUCH_MOVE then
+            -- Left side touch moves left paddle, right side touch moves right paddle
+            if event.x < game.width() / 2 then
+                -- Move left paddle (constrain within bounds)
+                game.vars.paddle_left_y = math.max(0, math.min(game.height() - PADDLE_HEIGHT, event.y - PADDLE_HEIGHT / 2))
+            else
+                -- Move right paddle (constrain within bounds)
+                game.vars.paddle_right_y = math.max(0, math.min(game.height() - PADDLE_HEIGHT, event.y - PADDLE_HEIGHT / 2))
+            end
+        end
+        
+        -- Update physics on frame tick
+        if event.type == INPUT.FRAME_TICK then
+            update_ball()
+            
+            -- Check win condition
+            if game.vars.paddle_left_score >= MAX_SCORE or game.vars.paddle_right_score >= MAX_SCORE then
+                game.vars.state = STATE_GAME_OVER
+            end
+            
+            return true  -- Always redraw when playing
+        end
+    
+    -- State: GAME_OVER
+    elseif state == STATE_GAME_OVER then
+        if event.type == INPUT.TOUCH_DOWN or event.type == INPUT.BUTTON_0 or event.type == INPUT.BUTTON_1 then
+            game.vars.state = STATE_MENU
+            return true
+        end
+    end
+    
+    return false
+end
+
+-- Draw game
+function draw()
+    renderer.clear(false)  -- Black background
+    
+    local state = game.vars.state
+    
+    -- Draw: MENU
+    if state == STATE_MENU then
+        renderer.text_scaled(game.width() / 2 - 15, game.height() / 2 - 30, "PONG", true, 2)
+        renderer.text_scaled(game.width() / 2 - 50, game.height() / 2, "Tap to Start", true, 2)
+        renderer.text_scaled(game.width() / 2 - 70, game.height() / 2 + 20, "First to " .. tostring(MAX_SCORE), true, 2)
+    
+    -- Draw: PLAYING
+    elseif state == STATE_PLAYING then
+        -- Draw center line
+        for y = 0, game.height(), 5 do
+            renderer.pixel(game.width() / 2, y, true)
+        end
+        
+        -- Draw paddles
+        renderer.rect(10, game.vars.paddle_left_y, PADDLE_WIDTH, PADDLE_HEIGHT, true, true)
+        renderer.rect(game.width() - 10 - PADDLE_WIDTH, game.vars.paddle_right_y, PADDLE_WIDTH, PADDLE_HEIGHT, true, true)
+        
+        -- Draw ball (convert to integers)
+        renderer.circle(math.floor(game.vars.ball_x + 0.5), math.floor(game.vars.ball_y + 0.5), BALL_RADIUS, true, true)
+        
+        -- Draw scores
+        local left_score_text = tostring(game.vars.paddle_left_score)
+        local right_score_text = tostring(game.vars.paddle_right_score)
+        renderer.text_scaled(game.width() / 2 - 30, 5, left_score_text, true, 2)
+        renderer.text_scaled(game.width() / 2 + 20, 5, right_score_text, true, 2)
+    
+    -- Draw: GAME_OVER
+    elseif state == STATE_GAME_OVER then
+        renderer.text_scaled(game.width() / 2 - 40, game.height() / 2 - 30, "GAME OVER", true, 2)
+        
+        local winner = "Player 1 Wins!"
+        if game.vars.paddle_right_score > game.vars.paddle_left_score then
+            winner = "Player 2 Wins!"
+        end
+        renderer.text_scaled(game.width() / 2 - 50, game.height() / 2, winner, true, 2)
+        
+        local final_text = game.vars.paddle_left_score .. " - " .. game.vars.paddle_right_score
+        renderer.text_scaled(game.width() / 2 - 25, game.height() / 2 + 20, final_text, true, 2)
+        
+        renderer.text_scaled(game.width() / 2 - 60, game.height() / 2 + 40, "Tap to Menu", true, 2)
+    end
+end
+
+-- Helper: Update ball physics
+function update_ball()
+    -- Move ball
+    game.vars.ball_x = game.vars.ball_x + game.vars.ball_vel_x
+    game.vars.ball_y = game.vars.ball_y + game.vars.ball_vel_y
+    
+    -- Bounce off top/bottom
+    if game.vars.ball_y - BALL_RADIUS < 0 or game.vars.ball_y + BALL_RADIUS > game.height() then
+        game.vars.ball_vel_y = -game.vars.ball_vel_y
+        game.vars.ball_y = math.max(BALL_RADIUS, math.min(game.height() - BALL_RADIUS, game.vars.ball_y))
+    end
+    
+    -- Check left paddle collision
+    if game.vars.ball_x - BALL_RADIUS < 10 + PADDLE_WIDTH then
+        if game.vars.ball_y > game.vars.paddle_left_y and game.vars.ball_y < game.vars.paddle_left_y + PADDLE_HEIGHT then
+            if game.vars.ball_vel_x < 0 then
+                game.vars.ball_vel_x = -game.vars.ball_vel_x
+                
+                -- Add spin based on where ball hits paddle
+                local hit_pos = (game.vars.ball_y - game.vars.paddle_left_y) / PADDLE_HEIGHT
+                game.vars.ball_vel_y = (hit_pos - 0.5) * 6
+            end
+        end
+    end
+    
+    -- Check right paddle collision
+    if game.vars.ball_x + BALL_RADIUS > game.width() - 10 - PADDLE_WIDTH then
+        if game.vars.ball_y > game.vars.paddle_right_y and game.vars.ball_y < game.vars.paddle_right_y + PADDLE_HEIGHT then
+            if game.vars.ball_vel_x > 0 then
+                game.vars.ball_vel_x = -game.vars.ball_vel_x
+                
+                -- Add spin based on where ball hits paddle
+                local hit_pos = (game.vars.ball_y - game.vars.paddle_right_y) / PADDLE_HEIGHT
+                game.vars.ball_vel_y = (hit_pos - 0.5) * 6
+            end
+        end
+    end
+    
+    -- Score on left side miss
+    if game.vars.ball_x < 0 then
+        game.vars.paddle_right_score = game.vars.paddle_right_score + 1
+        reset_ball()
+    end
+    
+    -- Score on right side miss
+    if game.vars.ball_x > game.width() then
+        game.vars.paddle_left_score = game.vars.paddle_left_score + 1
+        reset_ball()
+    end
+end
+
+-- Helper: Reset ball to center
+function reset_ball()
+    game.vars.ball_x = game.width() / 2
+    game.vars.ball_y = game.height() / 2
+    game.vars.ball_vel_x = 3 * (math.random() > 0.5 and 1 or -1)
+    game.vars.ball_vel_y = 2 * (math.random() > 0.5 and 1 or -1)
+end
+
+-- Helper: Reset game
+function reset_game()
+    game.vars.paddle_left_y = (game.height() / 2) - (PADDLE_HEIGHT / 2)
+    game.vars.paddle_left_score = 0
+    game.vars.paddle_right_y = (game.height() / 2) - (PADDLE_HEIGHT / 2)
+    game.vars.paddle_right_score = 0
+    reset_ball()
+end

games/lua_examples/simon_says.lua

@@ -0,0 +1,200 @@
+-- NAME: Simon Says
+-- DESC: Repeat the color sequence
+
+-- Game states
+local STATE_MENU = 0
+local STATE_PLAYING = 1
+local STATE_SHOWING = 2
+local STATE_GAME_OVER = 3
+
+-- Game constants
+local SHOW_DURATION = 30  -- Frames to show each button
+local WAIT_DURATION = 20  -- Frames between shows
+
+-- Button positions (calculated dynamically based on screen size)
+local function get_buttons()
+    local padding = math.floor(math.min(game.width(), game.height()) / 10)
+    local available = math.min(game.width(), game.height()) - (padding * 3)
+    local button_size = math.floor(available / 2)
+    local spacing = padding
+    
+    return {
+        {x = padding, y = padding, size = button_size, color = 1},           -- Top-left
+        {x = padding + button_size + spacing, y = padding, size = button_size, color = 2},  -- Top-right
+        {x = padding, y = padding + button_size + spacing, size = button_size, color = 3},  -- Bottom-left
+        {x = padding + button_size + spacing, y = padding + button_size + spacing, size = button_size, color = 4}  -- Bottom-right
+    }
+end
+
+function init()
+    game.vars.state = STATE_MENU
+    game.vars.score = 0
+    
+    -- Sequence of button presses
+    game.vars.sequence = {}
+    game.vars.player_seq = {}
+    
+    -- Animation state
+    game.vars.showing_idx = 0
+    game.vars.show_frame = 0
+    game.vars.show_button = nil
+    
+    -- Input state
+    game.vars.waiting_for_input = false
+    game.vars.input_idx = 0
+    
+    -- Enable continuous updates
+    game.set_frame_updates(true)
+    
+    print("Simon Says initialized")
+end
+
+function update(event)
+    local state = game.vars.state
+    
+    if state == STATE_MENU then
+        if event.type == INPUT.TOUCH_DOWN or event.type == INPUT.BUTTON_0 or event.type == INPUT.BUTTON_1 then
+            reset_game()
+            game.vars.state = STATE_PLAYING
+            return true
+        end
+    
+    elseif state == STATE_PLAYING then
+        -- Start showing sequence
+        if event.type == INPUT.FRAME_TICK then
+            game.vars.show_frame = game.vars.show_frame + 1
+            return true
+        end
+        
+        return false
+    
+    elseif state == STATE_SHOWING then
+        -- Animate sequence
+        if event.type == INPUT.FRAME_TICK then
+            game.vars.show_frame = game.vars.show_frame + 1
+            
+            -- Move to next button in sequence
+            if game.vars.show_frame > SHOW_DURATION + WAIT_DURATION then
+                game.vars.showing_idx = game.vars.showing_idx + 1
+                game.vars.show_frame = 0
+                game.vars.show_button = nil
+                
+                -- Done showing sequence, wait for player input
+                if game.vars.showing_idx > #game.vars.sequence then
+                    game.vars.state = STATE_PLAYING
+                    game.vars.waiting_for_input = true
+                    game.vars.input_idx = 0
+                end
+            else
+                -- Highlight button during show duration
+                if game.vars.show_frame <= SHOW_DURATION then
+                    game.vars.show_button = game.vars.sequence[game.vars.showing_idx]
+                else
+                    game.vars.show_button = nil
+                end
+            end
+            
+            return true
+        end
+        
+        return false
+    
+    elseif state == STATE_GAME_OVER then
+        if event.type == INPUT.TOUCH_DOWN or event.type == INPUT.BUTTON_0 or event.type == INPUT.BUTTON_1 then
+            game.vars.state = STATE_MENU
+            return true
+        end
+    end
+    
+    -- Handle player input
+    if game.vars.waiting_for_input and event.type == INPUT.TOUCH_DOWN then
+        local button = get_button_at(event.x, event.y)
+        if button then
+            game.vars.player_seq[#game.vars.player_seq + 1] = button
+            game.vars.input_idx = game.vars.input_idx + 1
+            
+            -- Check if correct
+            if game.vars.sequence[game.vars.input_idx] ~= button then
+                -- Wrong! Game over
+                game.vars.state = STATE_GAME_OVER
+                return true
+            end
+            
+            -- Check if completed sequence
+            if game.vars.input_idx == #game.vars.sequence then
+                -- Advance to next round
+                game.vars.sequence[#game.vars.sequence + 1] = math.random(1, 4)
+                game.vars.player_seq = {}
+                game.vars.waiting_for_input = false
+                game.vars.showing_idx = 0
+                game.vars.show_frame = 0
+                game.vars.show_button = nil
+                game.vars.state = STATE_SHOWING
+                game.vars.score = game.vars.score + 1
+                return true
+            end
+            
+            return true
+        end
+    end
+    
+    return false
+end
+
+function draw()
+    renderer.clear(false)  -- Black background
+    
+    local state = game.vars.state
+    local buttons = get_buttons()
+    
+    if state == STATE_MENU then
+        renderer.text_scaled(game.width() / 2 - 40, game.height() / 2 - 40, "SIMON SAYS", true, 2)
+        renderer.text_scaled(game.width() / 2 - 50, game.height() / 2 - 10, "Repeat the sequence", true, 2)
+        renderer.text_scaled(game.width() / 2 - 50, game.height() / 2 + 20, "Tap to Start", true, 2)
+    
+    else
+        -- Draw buttons with highlight
+        for i = 1, 4 do
+            local btn = buttons[i]
+            local filled = (game.vars.show_button == i)
+            renderer.rect(btn.x, btn.y, btn.size, btn.size, true, filled)
+        end
+        
+        -- Draw score
+        renderer.text_scaled(10, 10, "Level: " .. tostring(game.vars.score + 1), true, 2)
+        
+        if state == STATE_PLAYING and game.vars.waiting_for_input then
+            renderer.text_scaled(game.width() / 2 - 40, game.height() - 20, "Your turn!", true, 2)
+        end
+        
+        if state == STATE_GAME_OVER then
+            renderer.text_scaled(game.width() / 2 - 40, game.height() / 2 - 20, "GAME OVER", true, 2)
+            renderer.text_scaled(game.width() / 2 - 30, game.height() / 2, "Level: " .. tostring(game.vars.score + 1), true, 2)
+            renderer.text_scaled(game.width() / 2 - 60, game.height() / 2 + 20, "Tap to Restart", true, 2)
+        end
+    end
+end
+
+function get_button_at(x, y)
+    local buttons = get_buttons()
+    for i = 1, 4 do
+        local btn = buttons[i]
+        if x >= btn.x and x < btn.x + btn.size and
+           y >= btn.y and y < btn.y + btn.size then
+            return i
+        end
+    end
+    return nil
+end
+
+function reset_game()
+    game.vars.score = 0
+    game.vars.sequence = {math.random(1, 4)}
+    game.vars.player_seq = {}
+    game.vars.showing_idx = 0
+    game.vars.show_frame = 0
+    game.vars.show_button = nil
+    game.vars.waiting_for_input = false
+    game.vars.input_idx = 0
+    game.vars.state = STATE_SHOWING
+end

games/lua_examples/snake.lua

@@ -30,7 +30,10 @@ function init()
     game.vars.food_y = 14
     
     game.vars.frame_count = 0
-    game.vars.move_speed = 10  -- Frames between moves
+    game.vars.move_speed = 20  -- Frames between moves (doubled from 10 for half speed)
+    
+    -- Enable continuous frame updates
+    game.set_frame_updates(true)
     
     print("Snake Game initialized")
 end
@@ -124,9 +127,9 @@ function draw()
             renderer.rect(seg.x * CELL_SIZE, seg.y * CELL_SIZE, CELL_SIZE, CELL_SIZE, true, filled)
         end
         
-        -- Draw food
-        renderer.circle(game.vars.food_x * CELL_SIZE + CELL_SIZE / 2, 
-                       game.vars.food_y * CELL_SIZE + CELL_SIZE / 2, 
+        -- Draw food (convert center to integers)
+        renderer.circle(math.floor(game.vars.food_x * CELL_SIZE + CELL_SIZE / 2 + 0.5), 
+                       math.floor(game.vars.food_y * CELL_SIZE + CELL_SIZE / 2 + 0.5), 
                        CELL_SIZE / 2, true, true)
         
         -- Draw score
@@ -164,15 +167,13 @@ end
 function move_snake()
     local head = game.vars.snake[1]
     local new_head = {
-        x = head.x + game.vars.dir_x,
-        y = head.y + game.vars.dir_y
+        x = (head.x + game.vars.dir_x) % GRID_W,
+        y = (head.y + game.vars.dir_y) % GRID_H
     }
     
-    -- Check wall collision
-    if new_head.x < 0 or new_head.x >= GRID_W or new_head.y < 0 or new_head.y >= GRID_H then
-        game_over()
-        return
-    end
+    -- Wrap around negative values (Lua modulo behavior)
+    if new_head.x < 0 then new_head.x = new_head.x + GRID_W end
+    if new_head.y < 0 then new_head.y = new_head.y + GRID_H end
     
     -- Check self collision
     for i = 1, #game.vars.snake do
@@ -190,8 +191,8 @@ function move_snake()
         game.vars.score = game.vars.score + 10
         spawn_food()
         
-        -- Increase speed slightly
-        if game.vars.move_speed > 3 then
+        -- Increase speed slightly (but keep it slower overall)
+        if game.vars.move_speed > 5 then
             game.vars.move_speed = game.vars.move_speed - 1
         end
     end

games/lua_examples/tetris.lua

@@ -0,0 +1,314 @@
+-- NAME: Tetris
+-- DESC: Stack falling blocks, clear lines
+
+-- Game states
+local STATE_MENU = 0
+local STATE_PLAYING = 1
+local STATE_GAME_OVER = 2
+
+-- Game constants
+local GRID_WIDTH = 10
+local GRID_HEIGHT = 20
+local CELL_SIZE = 8
+local SPAWN_RATE = 30  -- Frames before piece drops
+
+-- Tetromino shapes (4 orientations each)
+local TETROMINOS = {
+    -- I piece
+    {
+        {{0, 0}, {1, 0}, {2, 0}, {3, 0}},
+        {{0, 0}, {0, 1}, {0, 2}, {0, 3}},
+        {{0, 0}, {1, 0}, {2, 0}, {3, 0}},
+        {{0, 0}, {0, 1}, {0, 2}, {0, 3}}
+    },
+    -- O piece
+    {
+        {{0, 0}, {1, 0}, {0, 1}, {1, 1}},
+        {{0, 0}, {1, 0}, {0, 1}, {1, 1}},
+        {{0, 0}, {1, 0}, {0, 1}, {1, 1}},
+        {{0, 0}, {1, 0}, {0, 1}, {1, 1}}
+    },
+    -- T piece
+    {
+        {{1, 0}, {0, 1}, {1, 1}, {2, 1}},
+        {{1, 0}, {0, 1}, {1, 1}, {1, 2}},
+        {{0, 1}, {1, 1}, {2, 1}, {1, 2}},
+        {{1, 0}, {1, 1}, {2, 1}, {1, 2}}
+    },
+    -- S piece
+    {
+        {{1, 0}, {2, 0}, {0, 1}, {1, 1}},
+        {{0, 0}, {0, 1}, {1, 1}, {1, 2}},
+        {{1, 0}, {2, 0}, {0, 1}, {1, 1}},
+        {{0, 0}, {0, 1}, {1, 1}, {1, 2}}
+    },
+    -- Z piece
+    {
+        {{0, 0}, {1, 0}, {1, 1}, {2, 1}},
+        {{1, 0}, {0, 1}, {1, 1}, {0, 2}},
+        {{0, 0}, {1, 0}, {1, 1}, {2, 1}},
+        {{1, 0}, {0, 1}, {1, 1}, {0, 2}}
+    },
+    -- J piece
+    {
+        {{0, 0}, {0, 1}, {1, 1}, {2, 1}},
+        {{1, 0}, {2, 0}, {1, 1}, {1, 2}},
+        {{0, 1}, {1, 1}, {2, 1}, {2, 0}},
+        {{1, 0}, {1, 1}, {0, 2}, {1, 2}}
+    },
+    -- L piece
+    {
+        {{2, 0}, {0, 1}, {1, 1}, {2, 1}},
+        {{1, 0}, {1, 1}, {1, 2}, {2, 2}},
+        {{0, 1}, {1, 1}, {2, 1}, {0, 0}},
+        {{0, 0}, {1, 0}, {1, 1}, {1, 2}}
+    }
+}
+
+function init()
+    game.vars.state = STATE_MENU
+    game.vars.score = 0
+    game.vars.level = 1
+    game.vars.lines = 0
+    
+    -- Grid (0 = empty, 1 = filled)
+    game.vars.grid = {}
+    for y = 1, GRID_HEIGHT do
+        game.vars.grid[y] = {}
+        for x = 1, GRID_WIDTH do
+            game.vars.grid[y][x] = 0
+        end
+    end
+    
+    -- Current piece
+    game.vars.piece = nil
+    game.vars.piece_x = 0
+    game.vars.piece_y = 0
+    game.vars.piece_type = 0
+    game.vars.piece_rotation = 0
+    
+    -- Animation
+    game.vars.frame_count = 0
+    game.vars.clear_rows = {}
+    game.vars.clearing = false
+    
+    -- Enable continuous updates
+    game.set_frame_updates(true)
+    
+    print("Tetris initialized")
+end
+
+function update(event)
+    local state = game.vars.state
+    
+    if state == STATE_MENU then
+        if event.type == INPUT.TOUCH_DOWN or event.type == INPUT.BUTTON_0 or event.type == INPUT.BUTTON_1 then
+            reset_game()
+            game.vars.state = STATE_PLAYING
+            return true
+        end
+    
+    elseif state == STATE_PLAYING then
+        -- Handle input
+        if event.type == INPUT.TOUCH_DOWN then
+            if event.x < game.width() / 2 then
+                -- Left side: move left
+                if can_move(game.vars.piece, game.vars.piece_x - 1, game.vars.piece_y, game.vars.piece_rotation) then
+                    game.vars.piece_x = game.vars.piece_x - 1
+                end
+            else
+                -- Right side: move right
+                if can_move(game.vars.piece, game.vars.piece_x + 1, game.vars.piece_y, game.vars.piece_rotation) then
+                    game.vars.piece_x = game.vars.piece_x + 1
+                end
+            end
+            return true
+        end
+        
+        -- Update physics on frame tick
+        if event.type == INPUT.FRAME_TICK then
+            game.vars.frame_count = game.vars.frame_count + 1
+            
+            if game.vars.clearing then
+                -- Clear animation
+                if game.vars.frame_count % 10 == 0 then
+                    clear_lines()
+                    game.vars.clearing = false
+                end
+            else
+                -- Drop piece
+                if game.vars.frame_count >= SPAWN_RATE then
+                    game.vars.frame_count = 0
+                    
+                    if can_move(game.vars.piece, game.vars.piece_x, game.vars.piece_y + 1, game.vars.piece_rotation) then
+                        game.vars.piece_y = game.vars.piece_y + 1
+                    else
+                        -- Lock piece
+                        lock_piece()
+                        
+                        -- Check for complete lines
+                        local complete = check_complete_lines()
+                        if #complete > 0 then
+                            game.vars.clear_rows = complete
+                            game.vars.clearing = true
+                        else
+                            spawn_piece()
+                        end
+                    end
+                end
+            end
+            
+            return true
+        end
+    
+    elseif state == STATE_GAME_OVER then
+        if event.type == INPUT.TOUCH_DOWN or event.type == INPUT.BUTTON_0 or event.type == INPUT.BUTTON_1 then
+            game.vars.state = STATE_MENU
+            return true
+        end
+    end
+    
+    return false
+end
+
+function draw()
+    renderer.clear(false)  -- Black background
+    
+    local state = game.vars.state
+    
+    if state == STATE_MENU then
+        renderer.text_scaled(game.width(, 2) / 2 - 20, game.height() / 2 - 30, "TETRIS", true)
+        renderer.text_scaled(game.width(, 2) / 2 - 50, game.height() / 2, "Tap to Start", true)
+    
+    elseif state == STATE_PLAYING or state == STATE_GAME_OVER then
+        -- Draw grid
+        local start_x = 20
+        local start_y = 15
+        
+        for y = 1, GRID_HEIGHT do
+            for x = 1, GRID_WIDTH do
+                if game.vars.grid[y][x] == 1 then
+                    renderer.rect(start_x + (x - 1) * CELL_SIZE, start_y + (y - 1) * CELL_SIZE, CELL_SIZE, CELL_SIZE, true, true)
+                end
+            end
+        end
+        
+        -- Draw current piece
+        if game.vars.piece then
+            for _, block in ipairs(game.vars.piece) do
+                local x = start_x + (game.vars.piece_x + block[1]) * CELL_SIZE
+                local y = start_y + (game.vars.piece_y + block[2]) * CELL_SIZE
+                renderer.rect(x, y, CELL_SIZE, CELL_SIZE, true, true)
+            end
+        end
+        
+        -- Draw score
+        renderer.text_scaled(game.width(, 2) - 50, 10, "Score: " .. tostring(game.vars.score), true)
+        renderer.text_scaled(game.width(, 2) - 50, 20, "Lines: " .. tostring(game.vars.lines), true)
+        
+        if state == STATE_GAME_OVER then
+            renderer.text_scaled(game.width(, 2) / 2 - 40, game.height() / 2, "GAME OVER", true)
+            renderer.text_scaled(game.width(, 2) / 2 - 50, game.height() / 2 + 20, "Tap to Menu", true)
+        end
+    end
+end
+
+function spawn_piece()
+    game.vars.piece_type = math.random(1, #TETROMINOS)
+    game.vars.piece_rotation = 1
+    game.vars.piece = TETROMINOS[game.vars.piece_type][game.vars.piece_rotation]
+    game.vars.piece_x = 3
+    game.vars.piece_y = 0
+    
+    -- Check if game over
+    if not can_move(game.vars.piece, game.vars.piece_x, game.vars.piece_y, game.vars.piece_rotation) then
+        game.vars.state = STATE_GAME_OVER
+    end
+end
+
+function lock_piece()
+    if not game.vars.piece then return end
+    
+    for _, block in ipairs(game.vars.piece) do
+        local x = game.vars.piece_x + block[1] + 1
+        local y = game.vars.piece_y + block[2] + 1
+        
+        if y >= 1 and y <= GRID_HEIGHT and x >= 1 and x <= GRID_WIDTH then
+            game.vars.grid[y][x] = 1
+        end
+    end
+end
+
+function can_move(piece, x, y, rotation)
+    if not piece then return false end
+    
+    for _, block in ipairs(piece) do
+        local grid_x = x + block[1] + 1
+        local grid_y = y + block[2] + 1
+        
+        if grid_x < 1 or grid_x > GRID_WIDTH or grid_y < 1 or grid_y > GRID_HEIGHT then
+            return false
+        end
+        
+        if game.vars.grid[grid_y][grid_x] == 1 then
+            return false
+        end
+    end
+    
+    return true
+end
+
+function check_complete_lines()
+    local complete = {}
+    
+    for y = 1, GRID_HEIGHT do
+        local full = true
+        for x = 1, GRID_WIDTH do
+            if game.vars.grid[y][x] == 0 then
+                full = false
+                break
+            end
+        end
+        
+        if full then
+            table.insert(complete, y)
+        end
+    end
+    
+    return complete
+end
+
+function clear_lines()
+    for _, y in ipairs(game.vars.clear_rows) do
+        -- Remove line
+        table.remove(game.vars.grid, y)
+        -- Add empty line at top
+        table.insert(game.vars.grid, 1, {})
+        for x = 1, GRID_WIDTH do
+            game.vars.grid[1][x] = 0
+        end
+    end
+    
+    game.vars.score = game.vars.score + (#game.vars.clear_rows * 100)
+    game.vars.lines = game.vars.lines + #game.vars.clear_rows
+    game.vars.clear_rows = {}
+    
+    spawn_piece()
+end
+
+function reset_game()
+    game.vars.score = 0
+    game.vars.level = 1
+    game.vars.lines = 0
+    game.vars.frame_count = 0
+    game.vars.clearing = false
+    
+    -- Clear grid
+    for y = 1, GRID_HEIGHT do
+        for x = 1, GRID_WIDTH do
+            game.vars.grid[y][x] = 0
+        end
+    end
+    
+    spawn_piece()
+end

games/lua_examples/tic_tac_toe.lua

@@ -0,0 +1,310 @@
+-- NAME: Tic-Tac-Toe
+-- DESC: Play vs AI opponent
+
+-- Game states
+local STATE_MENU = 0
+local STATE_PLAYING = 1
+local STATE_GAME_OVER = 2
+
+-- Game constants
+local GRID_SIZE = 3
+
+-- Calculate cell size based on screen size
+local function get_cell_size()
+    -- Use smallest dimension to maintain square grid
+    local min_dim = math.min(game.width(), game.height())
+    local padding = math.floor(min_dim / 8)
+    local available = min_dim - (padding * 2)
+    local cell_size = math.floor(available / GRID_SIZE)
+    return cell_size
+end
+
+local function get_grid_start_y()
+    -- Center grid vertically
+    local cell_size = get_cell_size()
+    local grid_height = cell_size * GRID_SIZE
+    return math.floor((game.height() - grid_height) / 2)
+end
+
+local function get_grid_start_x()
+    -- Center grid horizontally
+    local cell_size = get_cell_size()
+    local grid_width = cell_size * GRID_SIZE
+    return math.floor((game.width() - grid_width) / 2)
+end
+
+function init()
+    game.vars.state = STATE_MENU
+    game.vars.grid = {}
+    game.vars.player = 1  -- 1 = X, 2 = O
+    game.vars.ai = 2
+    game.vars.game_over = false
+    game.vars.winner = 0  -- 0 = ongoing, 1 = player wins, 2 = ai wins, 3 = draw
+    
+    -- Enable continuous updates
+    game.set_frame_updates(true)
+    
+    print("Tic-Tac-Toe initialized")
+end
+
+function update(event)
+    local state = game.vars.state
+    
+    if state == STATE_MENU then
+        if event.type == INPUT.TOUCH_DOWN or event.type == INPUT.BUTTON_0 or event.type == INPUT.BUTTON_1 then
+            reset_game()
+            game.vars.state = STATE_PLAYING
+            return true
+        end
+    
+    elseif state == STATE_PLAYING then
+        if event.type == INPUT.TOUCH_DOWN then
+            local cell = get_cell_at(event.x, event.y)
+            if cell and game.vars.grid[cell] == 0 then
+                -- Player move
+                game.vars.grid[cell] = game.vars.player
+                
+                -- Check win
+                local winner = check_winner()
+                if winner ~= 0 then
+                    if winner == game.vars.player then
+                        game.vars.winner = 1
+                    else
+                        game.vars.winner = 2
+                    end
+                    game.vars.state = STATE_GAME_OVER
+                    return true
+                end
+                
+                -- Check draw
+                if is_board_full() then
+                    game.vars.winner = 3
+                    game.vars.state = STATE_GAME_OVER
+                    return true
+                end
+                
+                -- AI move
+                local ai_move = find_best_move()
+                game.vars.grid[ai_move] = game.vars.ai
+                
+                -- Check win
+                winner = check_winner()
+                if winner ~= 0 then
+                    if winner == game.vars.ai then
+                        game.vars.winner = 2
+                    end
+                    game.vars.state = STATE_GAME_OVER
+                    return true
+                end
+                
+                -- Check draw
+                if is_board_full() then
+                    game.vars.winner = 3
+                    game.vars.state = STATE_GAME_OVER
+                    return true
+                end
+                
+                return true
+            end
+        end
+    
+    elseif state == STATE_GAME_OVER then
+        if event.type == INPUT.TOUCH_DOWN or event.type == INPUT.BUTTON_0 or event.type == INPUT.BUTTON_1 then
+            game.vars.state = STATE_MENU
+            return true
+        end
+    end
+    
+    return false
+end
+
+function draw()
+    renderer.clear(false)
+    
+    local state = game.vars.state
+    local cell_size = get_cell_size()
+    local start_x = get_grid_start_x()
+    local start_y = get_grid_start_y()
+    local cell_spacing = 2
+    
+    if state == STATE_MENU then
+        renderer.text_scaled(game.width() / 2 - 50, game.height() / 2 - 30, "TIC-TAC-TOE", true, 2)
+        renderer.text_scaled(game.width() / 2 - 50, game.height() / 2, "Play vs AI", true, 2)
+        renderer.text_scaled(game.width() / 2 - 50, game.height() / 2 + 20, "Tap to Start", true, 2)
+    
+    elseif state == STATE_PLAYING or state == STATE_GAME_OVER then
+        -- Draw grid
+        for row = 0, GRID_SIZE - 1 do
+            for col = 0, GRID_SIZE - 1 do
+                local cell_idx = row * GRID_SIZE + col + 1
+                local cell_x = start_x + col * (cell_size + cell_spacing)
+                local cell_y = start_y + row * (cell_size + cell_spacing)
+                
+                -- Draw cell
+                renderer.rect(cell_x, cell_y, cell_size, cell_size, true, false)
+                
+                -- Draw X or O
+                local value = game.vars.grid[cell_idx]
+                if value == 1 then
+                    -- Draw X
+                    renderer.line(cell_x + 2, cell_y + 2, cell_x + cell_size - 2, cell_y + cell_size - 2, true, 1)
+                    renderer.line(cell_x + cell_size - 2, cell_y + 2, cell_x + 2, cell_y + cell_size - 2, true, 1)
+                elseif value == 2 then
+                    -- Draw O (convert center to integers)
+                    renderer.circle(math.floor(cell_x + cell_size / 2 + 0.5), math.floor(cell_y + cell_size / 2 + 0.5), math.floor(cell_size / 2 - 2 + 0.5), true, false)
+                end
+            end
+        end
+        
+        if state == STATE_GAME_OVER then
+            if game.vars.winner == 1 then
+                renderer.text_scaled(game.width() / 2 - 30, 10, "YOU WIN!", true, 2)
+            elseif game.vars.winner == 2 then
+                renderer.text_scaled(game.width() / 2 - 30, 10, "AI WINS!", true, 2)
+            else
+                renderer.text_scaled(game.width() / 2 - 20, 10, "DRAW!", true, 2)
+            end
+            
+            renderer.text_scaled(game.width() / 2 - 60, game.height() - 15, "Tap to Menu", true, 2)
+        end
+    end
+end
+
+function get_cell_at(x, y)
+    local cell_size = get_cell_size()
+    local start_x = get_grid_start_x()
+    local start_y = get_grid_start_y()
+    local cell_spacing = 2
+    
+    for row = 0, GRID_SIZE - 1 do
+        for col = 0, GRID_SIZE - 1 do
+            local cell_x = start_x + col * (cell_size + cell_spacing)
+            local cell_y = start_y + row * (cell_size + cell_spacing)
+            
+            if x >= cell_x and x < cell_x + cell_size and
+               y >= cell_y and y < cell_y + cell_size then
+                return row * GRID_SIZE + col + 1
+            end
+        end
+    end
+    
+    return nil
+end
+
+function check_winner()
+    -- Check rows
+    for row = 0, GRID_SIZE - 1 do
+        local val = game.vars.grid[row * GRID_SIZE + 1]
+        if val ~= 0 then
+            local match = true
+            for col = 1, GRID_SIZE - 1 do
+                if game.vars.grid[row * GRID_SIZE + col + 1] ~= val then
+                    match = false
+                    break
+                end
+            end
+            if match then return val end
+        end
+    end
+    
+    -- Check columns
+    for col = 0, GRID_SIZE - 1 do
+        local val = game.vars.grid[col + 1]
+        if val ~= 0 then
+            local match = true
+            for row = 1, GRID_SIZE - 1 do
+                if game.vars.grid[row * GRID_SIZE + col + 1] ~= val then
+                    match = false
+                    break
+                end
+            end
+            if match then return val end
+        end
+    end
+    
+    -- Check diagonals
+    local val = game.vars.grid[1]
+    if val ~= 0 then
+        if game.vars.grid[5] == val and game.vars.grid[9] == val then
+            return val
+        end
+    end
+    
+    val = game.vars.grid[3]
+    if val ~= 0 then
+        if game.vars.grid[5] == val and game.vars.grid[7] == val then
+            return val
+        end
+    end
+    
+    return 0
+end
+
+function is_board_full()
+    for i = 1, 9 do
+        if game.vars.grid[i] == 0 then
+            return false
+        end
+    end
+    return true
+end
+
+function find_best_move()
+    local best_score = -1000
+    local best_move = nil
+    
+    for i = 1, 9 do
+        if game.vars.grid[i] == 0 then
+            game.vars.grid[i] = game.vars.ai
+            local score = minimax(0, false)
+            game.vars.grid[i] = 0
+            
+            if score > best_score then
+                best_score = score
+                best_move = i
+            end
+        end
+    end
+    
+    return best_move or 5  -- Fallback to center
+end
+
+function minimax(depth, is_maximizing)
+    local winner = check_winner()
+    
+    if winner == game.vars.ai then return 10 - depth end
+    if winner == game.vars.player then return depth - 10 end
+    if is_board_full() then return 0 end
+    
+    if is_maximizing then
+        local best_score = -1000
+        for i = 1, 9 do
+            if game.vars.grid[i] == 0 then
+                game.vars.grid[i] = game.vars.ai
+                local score = minimax(depth + 1, false)
+                game.vars.grid[i] = 0
+                best_score = math.max(best_score, score)
+            end
+        end
+        return best_score
+    else
+        local best_score = 1000
+        for i = 1, 9 do
+            if game.vars.grid[i] == 0 then
+                game.vars.grid[i] = game.vars.player
+                local score = minimax(depth + 1, true)
+                game.vars.grid[i] = 0
+                best_score = math.min(best_score, score)
+            end
+        end
+        return best_score
+    end
+end
+
+function reset_game()
+    game.vars.grid = {}
+    for i = 1, 9 do
+        game.vars.grid[i] = 0
+    end
+    game.vars.winner = 0
+end

games/lua_game.cpp

@@ -5,6 +5,7 @@
 
 #include "lua_game.h"
 #include "lua_bindings.h"
+#include "sd_card.h"
 #include <stdio.h>
 #include <string.h>
 
@@ -54,9 +55,13 @@ bool LuaGame::load_script() {
     FIL fil;
     FRESULT fr;
     
+    // Set SPI speed for SD card operations
+    uint prev_speed = sd_card_set_spi_speed();
+    
     // Open Lua script from SD card
     fr = f_open(&fil, script_path.c_str(), FA_READ);
     if (fr != FR_OK) {
+        sd_card_restore_spi_speed(prev_speed);
         error_message = "Failed to open file (FatFS error: ";
         error_message += std::to_string((int)fr);
         error_message += ")";
@@ -67,6 +72,7 @@ bool LuaGame::load_script() {
     FSIZE_t file_size = f_size(&fil);
     if (file_size == 0 || file_size > 64 * 1024) {  // Limit to 64KB
         f_close(&fil);
+        sd_card_restore_spi_speed(prev_speed);
         error_message = "Script file size invalid (0 or > 64KB)";
         return false;
     }
@@ -75,6 +81,7 @@ bool LuaGame::load_script() {
     char* script_buffer = new char[file_size + 1];
     if (!script_buffer) {
         f_close(&fil);
+        sd_card_restore_spi_speed(prev_speed);
         error_message = "Failed to allocate memory for script";
         return false;
     }
@@ -84,6 +91,9 @@ bool LuaGame::load_script() {
     fr = f_read(&fil, script_buffer, file_size, &bytes_read);
     f_close(&fil);
     
+    // Restore SPI speed immediately after file operations
+    sd_card_restore_spi_speed(prev_speed);
+    
     if (fr != FR_OK || bytes_read != file_size) {
         delete[] script_buffer;
         error_message = "Failed to read script file";
@@ -193,6 +203,18 @@ bool LuaGame::wants_to_exit() const {
     return exit;
 }
 
+bool LuaGame::wants_frame_updates() const {
+    if (!L) return false;
+    
+    // Check if Lua script wants continuous frame updates
+    lua_pushstring(L, "__wants_frame_updates");
+    lua_gettable(L, LUA_REGISTRYINDEX);
+    bool wants_updates = lua_toboolean(L, -1);
+    lua_pop(L, 1);
+    
+    return wants_updates;
+}
+
 bool LuaGame::call_lua_function(const char* func_name, int nargs, int nresults) {
     int result = lua_pcall(L, nargs, nresults, 0);
     if (result != LUA_OK) {

games/lua_game.h

@@ -64,6 +64,12 @@ public:
      */
     bool wants_to_exit() const override;
     
+    /**
+     * @brief Check if game wants continuous frame updates
+     * @return true if Lua script set __wants_frame_updates flag
+     */
+    bool wants_frame_updates() const override;
+    
     /**
      * @brief Get Lua state for bindings access
      */

games/lua_game_loader.cpp

@@ -5,6 +5,7 @@
 
 #include "lua_game_loader.h"
 #include "lua_game.h"
+#include "sd_card.h"
 #include <stdio.h>
 #include <string.h>
 #include <vector>
@@ -16,10 +17,21 @@ extern "C" {
 // Structure to hold script path for factory closure
 struct LuaGameFactoryData {
     char script_path[256];
+    char name[64];
+    char description[128];
 };
 
 static std::vector<LuaGameFactoryData*> factory_data_list;
 
+void LuaGameLoader::clear_factory_data() {
+    // Delete all factory data and clear the vector
+    for (LuaGameFactoryData* data : factory_data_list) {
+        delete data;
+    }
+    factory_data_list.clear();
+    printf("LuaGameLoader: Cleared all factory data\n");
+}
+
 // Factory wrapper that captures script path
 static Game* lua_game_factory_wrapper(uint16_t width, uint16_t height,
                                        LowLevelRenderer* renderer, LowLevelGUI* gui,
@@ -49,10 +61,14 @@ bool LuaGameLoader::parse_metadata(const char* script_path, char* name, char* de
     // Default empty description
     description[0] = '\0';
     
+    // Set SPI speed for SD card operations
+    uint prev_speed = sd_card_set_spi_speed();
+    
     // Try to open file and parse metadata comments
     fr = f_open(&fil, script_path, FA_READ);
     if (fr != FR_OK) {
         printf("LuaGameLoader: Warning - could not open %s for metadata\n", script_path);
+        sd_card_restore_spi_speed(prev_speed);
         return false;
     }
     
@@ -62,6 +78,9 @@ bool LuaGameLoader::parse_metadata(const char* script_path, char* name, char* de
     fr = f_read(&fil, buffer, sizeof(buffer) - 1, &bytes_read);
     f_close(&fil);
     
+    // Restore SPI speed
+    sd_card_restore_spi_speed(prev_speed);
+    
     if (fr != FR_OK) {
         return false;
     }
@@ -107,47 +126,81 @@ int LuaGameLoader::register_all_games(GameLauncher* launcher) {
     
     printf("LuaGameLoader: Scanning /games directory for .lua scripts...\n");
     
+    // Set SPI speed for SD card operations
+    uint prev_speed = sd_card_set_spi_speed();
+    
     // Open /games directory
     fr = f_opendir(&dir, "/games");
     if (fr != FR_OK) {
         printf("LuaGameLoader: Could not open /games directory (error %d)\n", fr);
         printf("LuaGameLoader: Make sure SD card is mounted and /games exists\n");
+        sd_card_restore_spi_speed(prev_speed);
         return 0;
     }
     
     // Scan for .lua files
     while (true) {
         fr = f_readdir(&dir, &fno);
-        if (fr != FR_OK || fno.fname[0] == 0) break;  // End of directory
+        if (fr != FR_OK) {
+            printf("LuaGameLoader: Error reading directory (error %d)\n", fr);
+            break;
+        }
+        if (fno.fname[0] == 0) {
+            printf("LuaGameLoader: End of directory reached\n");
+            break;  // End of directory
+        }
+        
+        printf("LuaGameLoader: Found entry: %s (attrib=0x%02X)\n", fno.fname, fno.fattrib);
         
         // Skip directories
-        if (fno.fattrib & AM_DIR) continue;
+        if (fno.fattrib & AM_DIR) {
+            printf("LuaGameLoader:   Skipping directory\n");
+            continue;
+        }
         
-        // Check for .lua extension
+        // Skip hidden files (these are short 8.3 filename entries)
+        if (fno.fattrib & AM_HID) {
+            printf("LuaGameLoader:   Skipping hidden file (short filename entry)\n");
+            continue;
+        }
+        
+        // Check for .lua extension (case-insensitive)
         size_t len = strlen(fno.fname);
-        if (len < 5 || strcmp(fno.fname + len - 4, ".lua") != 0) continue;
+        printf("LuaGameLoader:   Filename length: %d\n", len);
+        if (len < 5) {
+            printf("LuaGameLoader:   Filename too short\n");
+            continue;
+        }
+        
+        // Case-insensitive check for .lua or .LUA
+        const char* ext = fno.fname + len - 4;
+        if (strcasecmp(ext, ".lua") != 0) {
+            printf("LuaGameLoader:   Not a .lua file (ext=%s)\n", ext);
+            continue;
+        }
+        
+        printf("LuaGameLoader:   Valid .lua file!\n");
         
         // Build full path
         char script_path[256];
         snprintf(script_path, sizeof(script_path), "/games/%s", fno.fname);
         
-        // Parse metadata
-        char name[64];
-        char description[128];
-        parse_metadata(script_path, name, description);
-        
-        printf("LuaGameLoader: Found %s - '%s'\n", fno.fname, name);
-        
         // Create factory data (persistent for game lifetime)
         LuaGameFactoryData* data = new LuaGameFactoryData();
         strncpy(data->script_path, script_path, sizeof(data->script_path) - 1);
         data->script_path[sizeof(data->script_path) - 1] = '\0';
+        
+        // Parse metadata directly into persistent storage
+        parse_metadata(script_path, data->name, data->description);
+        
+        printf("LuaGameLoader: Found %s - '%s'\n", fno.fname, data->name);
+        
         factory_data_list.push_back(data);
         
         // Register with launcher - using lambda factory pattern
         launcher->register_game(
-            name,
-            description[0] ? description : "Lua Script",
+            data->name,
+            data->description[0] ? data->description : "Lua Script",
             [data](uint16_t width, uint16_t height, LowLevelRenderer* renderer, 
                    LowLevelGUI* gui, InputManager* input_manager) -> Game* {
                 return new LuaGame(data->script_path, width, height, renderer, gui, input_manager);
@@ -159,6 +212,9 @@ int LuaGameLoader::register_all_games(GameLauncher* launcher) {
     
     f_closedir(&dir);
     
+    // Restore SPI speed
+    sd_card_restore_spi_speed(prev_speed);
+    
     printf("LuaGameLoader: Registered %d Lua games\n", count);
     return count;
 }

games/lua_game_loader.h

@@ -20,6 +20,11 @@ public:
      */
     static int register_all_games(GameLauncher* launcher);
 
+    /**
+     * @brief Clear all factory data (useful before re-scanning)
+     */
+    static void clear_factory_data();
+
 private:
     /**
      * @brief Parse metadata from Lua script comments

lib/game.h

@@ -94,6 +94,17 @@ public:
      */
     virtual bool wants_to_exit() const { return false; }
 
+    /**
+     * @brief Check if game wants continuous frame updates
+     * 
+     * Games that need animation or continuous updates (like physics simulations)
+     * can override this to return true. They will receive INPUT_FRAME_TICK events
+     * every frame, even without user input.
+     * 
+     * @return true if game needs frame updates, false for event-driven only
+     */
+    virtual bool wants_frame_updates() const { return false; }
+
     /**
      * @brief Get the type of game for safe downcasting without RTTI
      */

lib/game_launcher.cpp

@@ -8,11 +8,13 @@
 #include "display/low_level_render.h"
 #include "display/low_level_gui.h"
 #include <stdio.h>
+#include <cstring>
+#include <cctype>
 
 GameLauncher::GameLauncher(uint16_t width, uint16_t height, 
                           LowLevelRenderer* renderer, LowLevelGUI* gui, InputManager* input_manager)
     : width(width), height(height), renderer(renderer), gui(gui), input_manager(input_manager),
-      selected_index(0), selected_game(nullptr) {
+      selected_index(0), selected_game(nullptr), current_page(0) {
 }
 
 void GameLauncher::register_game(const char* name, const char* description,
@@ -32,15 +34,23 @@ void GameLauncher::draw() {
 
     renderer->set_font(&font_5x5_obj);
     
-    // Draw title
-    renderer->draw_string_scaled(30, 40, "Select a Game:", 2);
+    // Draw title with page indicator
+    int total_pages = get_total_pages();
+    char title[64];
+    snprintf(title, sizeof(title), "Select a Game: (Page %d/%d)", current_page + 1, total_pages);
+    renderer->draw_string_scaled(30, 40, title, 2);
     
-    // Draw game list with GUI buttons
-    for (size_t i = 0; i < games.size(); i++) {
-        int y = MENU_Y_START + (i * MENU_ITEM_HEIGHT);
+    // Get games for current page
+    int page_start = get_page_start_index();
+    int page_end = get_page_end_index();
+    
+    // Draw game list with GUI buttons for current page only
+    for (int i = page_start; i < page_end && i < (int)games.size(); i++) {
+        int item_index = i - page_start;
+        int y = MENU_Y_START + (item_index * MENU_ITEM_HEIGHT);
         
         // Draw button (pressed/highlighted if selected)
-        bool is_selected = ((int)i == selected_index);
+        bool is_selected = (i == selected_index);
         gui->draw_button(window, 20, y, games[i].name, is_selected, true);
         
         // Draw description below button
@@ -49,27 +59,71 @@ void GameLauncher::draw() {
         renderer->draw_string_scaled(50, y + 36, games[i].description, 1);
     }
     
-    // Draw instructions at bottom
-    const char* instructions;
-    if (input_manager->has_buttons()) {
-        instructions = "Touch game or use KEY0/KEY1";
-    } else {
-        instructions = "Touch game to play";
-    }
+    // Draw navigation buttons at bottom (only if multiple pages)
+    if (total_pages > 1) {
+        int button_y = height - 65;
+        
+        // Previous page button
+        bool has_prev = (current_page > 0);
+        gui->draw_button(window, 30, button_y, "< PREV", false, true);
+        
+        // Next page button
+        bool has_next = (current_page + 1 < total_pages);
+        gui->draw_button(window, 200, button_y, "NEXT >", false, true);
+        
+        // Draw instructions
         renderer->set_font(&font_5x5_obj);
-    renderer->draw_string_scaled(30, height - 35, instructions, 2);
+        renderer->draw_string_scaled(30, height - 25, "Touch buttons or KEY0/KEY1", 1);
+    } else {
+        // Single page - just show select instruction
+        renderer->set_font(&font_5x5_obj);
+        renderer->draw_string_scaled(30, height - 35, "KEY0: Navigate | KEY1: Select | Touch to play", 1);
     }
+}
+
 
 bool GameLauncher::update(const InputEvent& event) {
     bool needs_refresh = false;
+    int total_pages = get_total_pages();
     
     switch (event.type) {
         case INPUT_TOUCH_DOWN: {
             printf("Touch at (%d,%d) in launcher\n", event.x, event.y);
             
-            // Check if touch is on a game entry
-            for (size_t i = 0; i < games.size(); i++) {
-                int y = MENU_Y_START + (i * MENU_ITEM_HEIGHT);
+            // Check if touch is on navigation buttons (if multiple pages)
+            if (total_pages > 1) {
+                // Previous button: x [30-180], y [235-275]
+                if (event.x >= PREV_BUTTON_X && event.x < PREV_BUTTON_X + BUTTON_WIDTH &&
+                    event.y >= NAV_BUTTON_Y && event.y < NAV_BUTTON_Y + BUTTON_HEIGHT) {
+                    if (current_page > 0) {
+                        current_page--;
+                        selected_index = get_page_start_index();
+                        needs_refresh = true;
+                        printf("Navigated to previous page: %d\n", current_page);
+                    }
+                    break;
+                }
+                
+                // Next button: x [200-350], y [235-275]
+                if (event.x >= NEXT_BUTTON_X && event.x < NEXT_BUTTON_X + BUTTON_WIDTH &&
+                    event.y >= NAV_BUTTON_Y && event.y < NAV_BUTTON_Y + BUTTON_HEIGHT) {
+                    if (current_page + 1 < total_pages) {
+                        current_page++;
+                        selected_index = get_page_start_index();
+                        needs_refresh = true;
+                        printf("Navigated to next page: %d\n", current_page);
+                    }
+                    break;
+                }
+            }
+            
+            // Check if touch is on a game entry for current page
+            int page_start = get_page_start_index();
+            int page_end = get_page_end_index();
+            
+            for (int i = page_start; i < page_end && i < (int)games.size(); i++) {
+                int item_index = i - page_start;
+                int y = MENU_Y_START + (item_index * MENU_ITEM_HEIGHT);
                 
                 // Touch area is the entire menu item
                 if (event.y >= y - 5 && event.y < y + MENU_ITEM_HEIGHT - 5) {
@@ -87,12 +141,41 @@ bool GameLauncher::update(const InputEvent& event) {
         }
         
         case INPUT_BUTTON_0: {
-            // Navigate menu
-            if (games.size() > 0) {
-                selected_index = (selected_index + 1) % games.size();
-                needs_refresh = true;
-                printf("Menu selection: %d (%s)\n", selected_index, games[selected_index].name);
+            // Navigate within current page or switch pages
+            int page_start = get_page_start_index();
+            int page_end = get_page_end_index();
+            
+            // If multiple games on current page, navigate within page first
+            if (page_end - page_start > 1) {
+                // Move within current page
+                int old_index = selected_index;
+                selected_index++;
+                if (selected_index >= page_end) {
+                    // Moving to next page
+                    if (current_page + 1 < total_pages) {
+                        current_page++;
+                        selected_index = get_page_start_index();
+                    } else {
+                        // Wrap to first page
+                        current_page = 0;
+                        selected_index = 0;
                     }
+                } else if (selected_index < page_start) {
+                    selected_index = page_start;
+                }
+            } else {
+                // Single game on page, move to next page
+                if (current_page + 1 < total_pages) {
+                    current_page++;
+                    selected_index = get_page_start_index();
+                } else {
+                    // Wrap to first page
+                    current_page = 0;
+                    selected_index = 0;
+                }
+            }
+            needs_refresh = true;
+            printf("Menu selection: %d (%s), Page: %d\n", selected_index, games[selected_index].name, current_page);
             break;
         }
         
@@ -127,5 +210,103 @@ void GameLauncher::reset() {
         selected_game = nullptr;
     }
     selected_index = 0;
+    current_page = 0;
     printf("Launcher reset - returning to menu\n");
 }
+
+void GameLauncher::clear_games() {
+    // Clean up currently selected game first
+    if (selected_game) {
+        delete selected_game;
+        selected_game = nullptr;
+    }
+
+    // Clear the games vector
+    games.clear();
+    selected_index = 0;
+    current_page = 0;
+    printf("Launcher: Cleared all registered games\n");
+}
+
+bool GameLauncher::select_game_by_name(const char* name) {
+    // Clean up old game first if one exists
+    if (selected_game) {
+        printf("Cleaning up previous game...\n");
+        delete selected_game;
+        selected_game = nullptr;
+    }
+
+    // First pass: search for exact match (case-insensitive)
+    for (size_t i = 0; i < games.size(); i++) {
+        if (strcasecmp(games[i].name, name) == 0) {
+            printf("Found exact match: %s\n", games[i].name);
+
+            // Create and initialize the game
+            selected_game = games[i].factory(width, height, renderer, gui, input_manager);
+            if (selected_game) {
+                printf("Game instance created, initializing...\n");
+                selected_game->init();
+                selected_index = i;
+                current_page = i / GAMES_PER_PAGE;
+                return true;
+            } else {
+                printf("Failed to create game instance\n");
+                return false;
+            }
+        }
+    }
+
+    // Second pass: search in reverse order for partial match (case-insensitive, newest files first)
+    for (int i = games.size() - 1; i >= 0; i--) {
+        // Convert both strings to lowercase for comparison
+        char game_name_lower[256];
+        char search_name_lower[256];
+
+        strncpy(game_name_lower, games[i].name, sizeof(game_name_lower) - 1);
+        game_name_lower[sizeof(game_name_lower) - 1] = '\0';
+
+        strncpy(search_name_lower, name, sizeof(search_name_lower) - 1);
+        search_name_lower[sizeof(search_name_lower) - 1] = '\0';
+
+        // Convert to lowercase
+        for (size_t j = 0; game_name_lower[j]; j++) {
+            game_name_lower[j] = tolower(game_name_lower[j]);
+        }
+        for (size_t j = 0; search_name_lower[j]; j++) {
+            search_name_lower[j] = tolower(search_name_lower[j]);
+        }
+
+        if (strstr(game_name_lower, search_name_lower) != nullptr) {
+            printf("Found partial match: %s (searching for: %s)\n", games[i].name, name);
+
+            // Create and initialize the game
+            selected_game = games[i].factory(width, height, renderer, gui, input_manager);
+            if (selected_game) {
+                printf("Game instance created, initializing...\n");
+                selected_game->init();
+                selected_index = i;
+                current_page = i / GAMES_PER_PAGE;
+                return true;
+            } else {
+                printf("Failed to create game instance\n");
+                return false;
+            }
+        }
+    }
+
+    printf("Game not found: %s\n", name);
+    return false;
+}
+
+int GameLauncher::get_total_pages() const {
+    if (games.empty()) return 1;
+    return (games.size() + GAMES_PER_PAGE - 1) / GAMES_PER_PAGE;
+}
+
+int GameLauncher::get_page_start_index() const {
+    return current_page * GAMES_PER_PAGE;
+}
+
+int GameLauncher::get_page_end_index() const {
+    return (current_page + 1) * GAMES_PER_PAGE;
+}

lib/game_launcher.h

@@ -79,12 +79,24 @@ public:
      */
     void reset();
 
+    /**
+     * @brief Clear all registered games (useful before re-scanning)
+     */
+    void clear_games();
+
     /**
      * @brief Check if a game is currently selected
      * @return true if game selected, false if in menu
      */
     bool is_game_selected() const { return selected_game != nullptr; }
 
+    /**
+     * @brief Select a game by name (for programmatic launching)
+     * @param name Game name to select (partial match supported)
+     * @return true if game was found and launched, false otherwise
+     */
+    bool select_game_by_name(const char* name);
+
 private:
     uint16_t width;
     uint16_t height;
@@ -95,11 +107,23 @@ private:
     std::vector<GameEntry> games;
     int selected_index;      // Currently highlighted game
     Game* selected_game;     // Currently running game (nullptr = in menu)
+    int current_page;        // Current page in pagination
     
     // Menu layout constants
     static const int MENU_Y_START = 60;
     static const int MENU_ITEM_HEIGHT = 40;
     static const int MENU_PADDING = 10;
+    static const int GAMES_PER_PAGE = 4;
+    static const int NAV_BUTTON_Y = 235;  // Bottom navigation buttons
+    static const int PREV_BUTTON_X = 30;
+    static const int NEXT_BUTTON_X = 200;
+    static const int BUTTON_WIDTH = 150;
+    static const int BUTTON_HEIGHT = 40;
+    
+    // Helper functions for pagination
+    int get_total_pages() const;
+    int get_page_start_index() const;
+    int get_page_end_index() const;
 };
 
 #endif // GAME_LAUNCHER_H

lib/input_event.h

@@ -17,7 +17,8 @@ enum InputType {
     INPUT_TOUCH_UP,
     INPUT_BUTTON_0,
     INPUT_BUTTON_1,
-    INPUT_GESTURE
+    INPUT_GESTURE,
+    INPUT_FRAME_TICK      // Sent every frame for animation/continuous updates
 };
 
 // Unified input event structure

lib/sd_card/sd_card.c

@@ -105,7 +105,7 @@ bool sd_card_init(const sd_card_config_t *config) {
     // Configure MISO pin for SPI (MUST be done for SD card reads to work)
     gpio_set_function(config->gpio_miso, GPIO_FUNC_SPI);
     
-    // Save current SPI speed
+    // Save current SPI speed to restore on failure
     uint baudrate = spi_get_baudrate(config->spi);
     
     // Slow down SPI for SD card initialization (100-400 kHz recommended)
@@ -128,6 +128,7 @@ bool sd_card_init(const sd_card_config_t *config) {
     
     if (r1 != SD_R1_IDLE_STATE) {
         printf("[SD] Card not responding to CMD0\n");
+        spi_set_baudrate(config->spi, baudrate);  // Restore original speed
         return false;  // Card not responding
     }
     
@@ -151,6 +152,7 @@ bool sd_card_init(const sd_card_config_t *config) {
         // Check if voltage range is supported
         if (ocr[2] != 0x01 || ocr[3] != 0xAA) {
             printf("[SD] Voltage range not supported\n");
+            spi_set_baudrate(config->spi, baudrate);  // Restore original speed
             return false;
         }
         
@@ -173,6 +175,7 @@ bool sd_card_init(const sd_card_config_t *config) {
         
         if (r1 != SD_R1_READY) {
             printf("[SD] ACMD41 initialization timeout\n");
+            spi_set_baudrate(config->spi, baudrate);  // Restore original speed
             return false;  // Initialization failed
         }
         
@@ -222,10 +225,12 @@ bool sd_card_init(const sd_card_config_t *config) {
             
             g_card_info.type = SD_CARD_TYPE_SD1;
         } else {
+            spi_set_baudrate(config->spi, baudrate);  // Restore original speed
             return false;  // Not supported
         }
         
         if (r1 != SD_R1_READY) {
+            spi_set_baudrate(config->spi, baudrate);  // Restore original speed
             return false;
         }
     }
@@ -237,6 +242,7 @@ bool sd_card_init(const sd_card_config_t *config) {
         sd_card_deselect();
         
         if (r1 != SD_R1_READY) {
+            spi_set_baudrate(config->spi, baudrate);  // Restore original speed
             return false;
         }
     }
@@ -317,7 +323,9 @@ bool sd_card_read_blocks(uint32_t block_addr, uint32_t num_blocks, uint8_t *buff
 }
 
 bool sd_card_write_block(uint32_t block_addr, const uint8_t *buffer) {
-    if (!g_card_info.initialized || buffer == NULL) return false;
+    if (!g_card_info.initialized || buffer == NULL) {
+        return false;
+    }
 
     // For non-SDHC cards, convert block address to byte address
     if (g_card_info.type != SD_CARD_TYPE_SDHC) {
@@ -328,11 +336,24 @@ bool sd_card_write_block(uint32_t block_addr, const uint8_t *buffer) {
 
     // Send write command
     uint8_t r1 = sd_card_send_command(SD_CMD24, block_addr);
+
     if (r1 != SD_R1_READY) {
         sd_card_deselect();
         return false;
     }
 
+    // Wait for card to be ready to receive data
+    uint32_t timeout_count = 0;
+    uint8_t ready_byte;
+    do {
+        ready_byte = sd_card_transfer(0xFF);
+        timeout_count++;
+        if (timeout_count > 1000) {
+            sd_card_deselect();
+            return false;
+        }
+    } while (ready_byte != 0xFF);
+
     // Send start token
     sd_card_transfer(SD_START_TOKEN);
 
@@ -345,8 +366,15 @@ bool sd_card_write_block(uint32_t block_addr, const uint8_t *buffer) {
     sd_card_transfer(0xFF);
     sd_card_transfer(0xFF);
 
-    // Check data response
-    uint8_t response = sd_card_transfer(0xFF);
+    // Check data response - may need to read several bytes before getting response
+    uint8_t response = 0xFF;
+    for (int i = 0; i < 10; i++) {
+        response = sd_card_transfer(0xFF);
+        if (response != 0xFF) {
+            break;
+        }
+    }
+
     if ((response & 0x1F) != SD_DATA_ACCEPTED) {
         sd_card_deselect();
         return false;
@@ -392,14 +420,28 @@ bool sd_card_init_with_board_config(void) {
     static const sd_card_config_t config = {
         .spi = SD_SPI_PORT,
         .gpio_cs = SD_CS_PIN,
-        .gpio_miso = DISPLAY_MISO_PIN,
-        .gpio_mosi = DISPLAY_MOSI_PIN,
-        .gpio_sck = DISPLAY_SCK_PIN
+        .gpio_miso = SD_MISO_PIN,
+        .gpio_mosi = SD_MOSI_PIN,
+        .gpio_sck = SD_SCK_PIN
     };
     
     return sd_card_init(&config);
 }
 
+uint sd_card_set_spi_speed(void) {
+    if (!g_config) return 0;
+    
+    // Save current speed and set to SD card speed
+    uint current_speed = spi_get_baudrate(g_config->spi);
+    spi_set_baudrate(g_config->spi, 12500 * 1000);  // 12.5 MHz for SD card
+    return current_speed;
+}
+
+void sd_card_restore_spi_speed(uint baudrate) {
+    if (!g_config || baudrate == 0) return;
+    spi_set_baudrate(g_config->spi, baudrate);
+}
+
 bool sd_card_test_fatfs(void) {
     if (!g_card_info.initialized) {
         printf("SD Card not initialized\n");

lib/sd_card/sd_card.h

@@ -75,6 +75,19 @@ bool sd_card_init(const sd_card_config_t *config);
  */
 bool sd_card_init_with_board_config(void);
 
+/**
+ * Set SPI speed to SD card speed (12.5 MHz) before SD operations
+ * Call this before any FatFS file operations if SPI is shared with display
+ * @return Previous baudrate to restore later
+ */
+uint sd_card_set_spi_speed(void);
+
+/**
+ * Restore SPI speed after SD card operations
+ * @param baudrate Previous baudrate to restore
+ */
+void sd_card_restore_spi_speed(uint baudrate);
+
 /**
  * Get card information
  * @param info Pointer to info structure to fill

lib/serial_uploader.cpp

@@ -0,0 +1,330 @@
+#include "serial_uploader.h"
+#include "game_launcher.h"
+#include "lua_game_loader.h"
+#include "sd_card.h"
+#include "pico/stdlib.h"
+#include <cstring>
+#include <cstdio>
+#include <cctype>
+
+// Maximum file size: 64KB (should be plenty for Lua games)
+#define MAX_FILE_SIZE (64 * 1024)
+
+SerialUploader::SerialUploader(GameLauncher* launcher)
+    : state(IDLE)
+    , game_launcher(launcher)
+    , file_size(0)
+    , bytes_received(0)
+    , file_buffer(nullptr)
+    , base64_index(0)
+{
+    filename[0] = '\0';
+    last_uploaded_name[0] = '\0';
+}
+
+void SerialUploader::reset() {
+    state = IDLE;
+    file_size = 0;
+    bytes_received = 0;
+    base64_index = 0;
+    filename[0] = '\0';
+
+    if (file_buffer) {
+        delete[] file_buffer;
+        file_buffer = nullptr;
+    }
+}
+
+uint8_t SerialUploader::decode_base64_char(char c) {
+    if (c >= 'A' && c <= 'Z') return c - 'A';
+    if (c >= 'a' && c <= 'z') return c - 'a' + 26;
+    if (c >= '0' && c <= '9') return c - '0' + 52;
+    if (c == '+') return 62;
+    if (c == '/') return 63;
+    return 0;
+}
+
+void SerialUploader::decode_base64_block(const char* input, uint8_t* output) {
+    uint32_t combined = (decode_base64_char(input[0]) << 18) |
+                        (decode_base64_char(input[1]) << 12) |
+                        (decode_base64_char(input[2]) << 6) |
+                        decode_base64_char(input[3]);
+
+    output[0] = (combined >> 16) & 0xFF;
+    output[1] = (combined >> 8) & 0xFF;
+    output[2] = combined & 0xFF;
+}
+
+bool SerialUploader::write_file_to_sd() {
+    if (bytes_received == 0) {
+        printf("ERROR No data received!\n");
+        return false;
+    }
+
+    if (!file_buffer) {
+        printf("ERROR File buffer is NULL!\n");
+        return false;
+    }
+
+    // Set SPI speed to SD card speed (12.5 MHz) and save previous speed
+    uint prev_speed = sd_card_set_spi_speed();
+
+    // Ensure /games directory exists
+    FRESULT fr = f_mkdir("/games");
+    if (fr != FR_OK && fr != FR_EXIST) {
+        printf("ERROR Failed to create /games directory: %d\n", fr);
+        // Try to continue anyway in case it already exists
+    }
+
+    // Build file path - overwrite if file exists
+    char filepath[128];
+    snprintf(filepath, sizeof(filepath), "/games/%s", filename);
+
+    FIL fil;
+    fr = f_open(&fil, filepath, FA_CREATE_ALWAYS | FA_WRITE);
+
+    if (fr != FR_OK) {
+        printf("ERROR Failed to open file for writing: %d\n", fr);
+        sd_card_restore_spi_speed(prev_speed);
+        return false;
+    }
+
+    // Write data in chunks (more reliable for large files)
+    const uint32_t CHUNK_SIZE = 512;
+    uint32_t total_written = 0;
+
+    while (total_written < bytes_received) {
+        uint32_t chunk = (bytes_received - total_written > CHUNK_SIZE) ? CHUNK_SIZE : (bytes_received - total_written);
+
+        UINT bytes_written = 0;
+        fr = f_write(&fil, file_buffer + total_written, chunk, &bytes_written);
+
+        if (fr != FR_OK) {
+            printf("ERROR f_write failed at byte %u: error %d\n", total_written, fr);
+            f_close(&fil);
+            sd_card_restore_spi_speed(prev_speed);
+            return false;
+        }
+
+        if (bytes_written != chunk) {
+            printf("ERROR Partial write: wrote %u/%u bytes at offset %u\n", bytes_written, chunk, total_written);
+            f_close(&fil);
+            sd_card_restore_spi_speed(prev_speed);
+            return false;
+        }
+
+        total_written += bytes_written;
+    }
+
+    // Sync to ensure data is written to SD card
+    fr = f_sync(&fil);
+    if (fr != FR_OK) {
+        printf("ERROR f_sync failed: %d\n", fr);
+    }
+
+    f_close(&fil);
+
+    printf("✓ Wrote %u bytes to %s\n", total_written, filepath);
+
+    // Restore display SPI speed
+    sd_card_restore_spi_speed(prev_speed);
+
+    return true;
+}
+
+void SerialUploader::launch_game() {
+    // Extract base game name (remove .lua extension)
+    strncpy(last_uploaded_name, filename, sizeof(last_uploaded_name) - 1);
+    last_uploaded_name[sizeof(last_uploaded_name) - 1] = '\0';
+
+    // Remove .lua extension
+    char* ext = strstr(last_uploaded_name, ".lua");
+    if (ext) {
+        *ext = '\0';
+    }
+
+    printf("Re-scanning Lua games to pick up new file...\n");
+
+    // Clear existing games before re-scanning (prevents duplicates and memory leaks)
+    game_launcher->clear_games();
+    LuaGameLoader::clear_factory_data();
+
+    // Re-scan Lua games to pick up the newly uploaded file
+    // Note: LuaGameLoader::register_all_games handles SPI speed internally
+    int new_games = LuaGameLoader::register_all_games(game_launcher);
+    printf("Found %d Lua games after re-scan\n", new_games);
+}
+
+bool SerialUploader::complete_launch() {
+    // This should only be called when it's safe (no display refresh in progress)
+    // Now try to launch the newly uploaded game by name
+    printf("Attempting to launch game: %s\n", last_uploaded_name);
+    bool launched = game_launcher->select_game_by_name(last_uploaded_name);
+
+    if (launched) {
+        printf("LAUNCHED %s\n", last_uploaded_name);
+    } else {
+        printf("ERROR Failed to launch game: %s\n", last_uploaded_name);
+    }
+
+    // Reset state back to IDLE
+    reset();
+
+    return launched;
+}
+
+bool SerialUploader::process() {
+    if (state == IDLE) {
+        // Check for "UPLOAD" command
+        int c = getchar_timeout_us(0);
+        if (c == PICO_ERROR_TIMEOUT) return false;
+
+        if (c == 'U') {
+            // Check for "UPLOAD "
+            static char cmd_buffer[8];
+            cmd_buffer[0] = c;
+            int idx = 1;
+
+            // Read "PLOAD "
+            for (int i = 0; i < 6; i++) {
+                c = getchar_timeout_us(100000); // 100ms timeout
+                if (c == PICO_ERROR_TIMEOUT) return false;
+                cmd_buffer[idx++] = c;
+            }
+            cmd_buffer[idx] = '\0';
+
+            if (strcmp(cmd_buffer, "UPLOAD ") == 0) {
+                state = RECEIVING_FILENAME;
+                filename[0] = '\0';
+                return false;
+            }
+        }
+    }
+
+    if (state == RECEIVING_FILENAME) {
+        // Read filename until space
+        int idx = strlen(filename);
+        while (idx < sizeof(filename) - 1) {
+            int c = getchar_timeout_us(100000);
+            if (c == PICO_ERROR_TIMEOUT) break;
+
+            if (c == ' ') {
+                filename[idx] = '\0';
+                state = RECEIVING_SIZE;
+                file_size = 0;
+                return false;
+            }
+
+            filename[idx++] = (char)c;
+        }
+    }
+
+    if (state == RECEIVING_SIZE) {
+        // Read file size until newline
+        char size_buffer[16];
+        int idx = 0;
+
+        while (idx < sizeof(size_buffer) - 1) {
+            int c = getchar_timeout_us(100000);
+            if (c == PICO_ERROR_TIMEOUT) break;
+
+            if (c == '\n' || c == '\r') {
+                size_buffer[idx] = '\0';
+                file_size = atoi(size_buffer);
+
+                if (file_size == 0 || file_size > MAX_FILE_SIZE) {
+                    printf("ERROR Invalid file size: %u\n", file_size);
+                    reset();
+                    return false;
+                }
+
+                // Allocate buffer for decoded data
+                // file_size is the ORIGINAL (decoded) size, so allocate exactly that
+                file_buffer = new uint8_t[file_size];
+
+                if (!file_buffer) {
+                    printf("ERROR Failed to allocate %u bytes for file buffer\n", file_size);
+                    reset();
+                    return false;
+                }
+
+                bytes_received = 0;
+                base64_index = 0;
+
+                state = RECEIVING_DATA;
+                printf("Receiving %u bytes for %s...\n", file_size, filename);
+                return false;
+            }
+
+            size_buffer[idx++] = (char)c;
+        }
+    }
+
+    if (state == RECEIVING_DATA) {
+        // Read base64 data until "END"
+        while (true) {
+            int c = getchar_timeout_us(1000);
+            if (c == PICO_ERROR_TIMEOUT) break;
+
+            // Check for "END" marker
+            static char end_check[4] = {0, 0, 0, 0};
+            end_check[0] = end_check[1];
+            end_check[1] = end_check[2];
+            end_check[2] = end_check[3];
+            end_check[3] = (char)c;
+
+            if (end_check[0] == '\n' && end_check[1] == 'E' && end_check[2] == 'N' && end_check[3] == 'D') {
+                state = WRITING_FILE;
+                return false;
+            }
+
+            // Skip whitespace
+            if (isspace(c)) continue;
+
+            // Accumulate base64 characters
+            if ((c >= 'A' && c <= 'Z') || (c >= 'a' && c <= 'z') ||
+                (c >= '0' && c <= '9') || c == '+' || c == '/' || c == '=') {
+
+                base64_buffer[base64_index++] = (char)c;
+
+                // Decode every 4 characters
+                if (base64_index == 4) {
+                    uint8_t decoded[3];
+                    decode_base64_block(base64_buffer, decoded);
+
+                    // Handle padding
+                    int decoded_count = 3;
+                    if (base64_buffer[2] == '=') decoded_count = 1;
+                    else if (base64_buffer[3] == '=') decoded_count = 2;
+
+                    // Copy decoded bytes
+                    for (int i = 0; i < decoded_count; i++) {
+                        if (bytes_received < file_size) {
+                            file_buffer[bytes_received++] = decoded[i];
+                        }
+                    }
+
+                    base64_index = 0;
+                }
+            }
+        }
+    }
+
+    if (state == WRITING_FILE) {
+        if (write_file_to_sd()) {
+            state = LAUNCHING_GAME;
+            // Prepare for launch by scanning games, but don't actually launch yet
+            launch_game();
+        } else {
+            reset();
+        }
+        return false;
+    }
+
+    if (state == LAUNCHING_GAME) {
+        // Stay in this state until main loop calls complete_launch() when safe
+        return false;
+    }
+
+    return false;
+}

lib/serial_uploader.h

@@ -0,0 +1,59 @@
+#ifndef SERIAL_UPLOADER_H
+#define SERIAL_UPLOADER_H
+
+#include <cstdint>
+#include "ff.h"
+
+class GameLauncher;
+
+class SerialUploader {
+public:
+    SerialUploader(GameLauncher* launcher);
+
+    // Process incoming serial data (call this frequently in main loop)
+    // Returns true if a game was launched
+    bool process();
+
+    // Check if uploader wants to launch a game (after upload complete)
+    bool wants_to_launch_game() const { return state == LAUNCHING_GAME; }
+
+    // Complete the game launch (call only when safe - no display refresh in progress)
+    // Returns true if launch succeeded
+    bool complete_launch();
+
+    // Get the filename of the last uploaded game (without .lua extension)
+    const char* get_last_uploaded_filename() const { return last_uploaded_name; }
+
+private:
+    enum State {
+        IDLE,
+        RECEIVING_FILENAME,
+        RECEIVING_SIZE,
+        RECEIVING_DATA,
+        WRITING_FILE,
+        LAUNCHING_GAME
+    };
+
+    State state;
+    GameLauncher* game_launcher;
+
+    // Upload state
+    char filename[64];
+    char last_uploaded_name[64];  // Game name without .lua extension
+    uint32_t file_size;
+    uint32_t bytes_received;
+    uint8_t* file_buffer;
+
+    // Base64 decoding buffer
+    char base64_buffer[4];
+    int base64_index;
+
+    // Helper methods
+    void reset();
+    bool write_file_to_sd();
+    void launch_game();
+    uint8_t decode_base64_char(char c);
+    void decode_base64_block(const char* input, uint8_t* output);
+};
+
+#endif // SERIAL_UPLOADER_H

lib/st7789/st7789.c

@@ -12,6 +12,7 @@
 
 #include "hardware/gpio.h"
 #include "hardware/spi.h"
+#include "hardware/pwm.h"
 #include "pico/binary_info.h"
 #include "pico/stdlib.h"
 
@@ -60,6 +61,12 @@ static uint16_t height;
 static uint16_t x_offset;
 static uint16_t y_offset;
 
+// Backlight control
+static uint pwm_slice;
+static uint pwm_channel;
+static uint8_t current_brightness = 100;
+static bool pwm_initialized = false;
+
 static inline void cs_select() {
     if (config->gpio_cs >= 0) {
         asm volatile("nop \n nop \n nop");
@@ -173,10 +180,19 @@ void st7789_init(const struct st7789_config *c, uint16_t w, uint16_t h) {
     gpio_init(config->gpio_rst);
     gpio_set_dir(config->gpio_rst, GPIO_OUT);
 
-    // Initialize backlight pin
-    gpio_init(config->gpio_bl);
-    gpio_set_dir(config->gpio_bl, GPIO_OUT);
-    gpio_put(config->gpio_bl, 1); // Turn on backlight
+    // Initialize backlight pin with PWM
+    if (config->gpio_bl >= 0) {
+        gpio_set_function(config->gpio_bl, GPIO_FUNC_PWM);
+        pwm_slice = pwm_gpio_to_slice_num(config->gpio_bl);
+        pwm_channel = pwm_gpio_to_channel(config->gpio_bl);
+        
+        // Set PWM frequency to ~1kHz
+        pwm_set_wrap(pwm_slice, 65535);
+        pwm_set_chan_level(pwm_slice, pwm_channel, 65535); // 100% duty cycle
+        pwm_set_enabled(pwm_slice, true);
+        
+        pwm_initialized = true;
+    }
 
     // Reset display
     reset_pulse();
@@ -403,3 +419,48 @@ void st7789_draw_line(uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1, uint16
         }
     }
 }
+
+void st7789_set_brightness(uint8_t brightness) {
+    if (!pwm_initialized || config->gpio_bl < 0) return;
+    
+    // Clamp brightness
+    if (brightness > 100) brightness = 100;
+    
+    current_brightness = brightness;
+    
+    // Convert 0-100 to 0-65535
+    uint16_t level = (uint16_t)((brightness * 65535) / 100);
+    pwm_set_chan_level(pwm_slice, pwm_channel, level);
+}
+
+uint8_t st7789_get_brightness(void) {
+    return current_brightness;
+}
+
+void st7789_sleep(void) {
+    // Turn off backlight
+    if (pwm_initialized && config->gpio_bl >= 0) {
+        pwm_set_chan_level(pwm_slice, pwm_channel, 0);
+    }
+    
+    // Display off
+    write_command(ST7789_DISPOFF);
+    sleep_ms(10);
+    
+    // Sleep in
+    write_command(ST7789_SLPIN);
+    sleep_ms(120);
+}
+
+void st7789_wake(void) {
+    // Sleep out
+    write_command(ST7789_SLPOUT);
+    sleep_ms(120);
+    
+    // Display on
+    write_command(ST7789_DISPON);
+    sleep_ms(10);
+    
+    // Restore brightness
+    st7789_set_brightness(current_brightness);
+}

lib/st7789/st7789.h

@@ -38,6 +38,11 @@ void st7789_draw_circle(uint16_t x0, uint16_t y0, uint16_t r, uint16_t color);
 void st7789_fill_circle(uint16_t x0, uint16_t y0, uint16_t r, uint16_t color);
 void st7789_draw_line(uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1, uint16_t color);
 
+void st7789_sleep(void);
+void st7789_wake(void);
+void st7789_set_brightness(uint8_t brightness);
+uint8_t st7789_get_brightness(void);
+
 #ifdef __cplusplus
 }
 #endif

lib/st7796/st7796.c

@@ -58,6 +58,8 @@
 
 #include "hardware/gpio.h"
 #include "hardware/spi.h"
+#include "hardware/dma.h"
+#include "hardware/pwm.h"
 #include "pico/binary_info.h"
 #include "pico/stdlib.h"
 
@@ -118,6 +120,13 @@ static uint16_t width;      // Display width in pixels (e.g., 480)
 static uint16_t height;     // Display height in pixels (e.g., 320)
 static uint16_t x_offset;   // X offset for display alignment (currently 0)
 static uint16_t y_offset;   // Y offset for display alignment (currently 0)
+static uint8_t current_brightness = 100;  // Current brightness level (0-100)
+static uint pwm_slice;      // PWM slice number for backlight control
+static uint pwm_channel;    // PWM channel number for backlight control
+
+// DMA Channel for fast transfers
+static int dma_tx_channel = -1;
+static dma_channel_config dma_tx_config;
 
 /**
  * @brief Activate chip select (pull CS LOW)
@@ -259,7 +268,7 @@ static void write_command_with_data(uint8_t cmd, const uint8_t *data, size_t len
  * This compensates for displays where the physical screen doesn't align
  * with the controller's framebuffer (common with ST7789/ST7796).
  */
-static void set_window(uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1) {
+void st7796_set_window(uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1) {
     uint8_t data[4];
 
     // Add offsets for display positioning
@@ -334,6 +343,12 @@ void st7796_init(const struct st7796_config *c, uint16_t w, uint16_t h) {
     x_offset = 0;
     y_offset = 0;
     
+    // Initialize DMA for SPI
+    dma_tx_channel = dma_claim_unused_channel(true);
+    dma_tx_config = dma_channel_get_default_config(dma_tx_channel);
+    channel_config_set_transfer_data_size(&dma_tx_config, DMA_SIZE_8); // 8-bit transfers
+    channel_config_set_dreq(&dma_tx_config, spi_get_dreq(config->spi, true)); // Sync with SPI TX
+
     // Initialize SPI at maximum stable speed for ST7796
     // Datasheet says max 15.15 MHz, but modern displays work much faster
     // Successfully tested at 80 MHz, now trying 100 MHz
@@ -359,12 +374,27 @@ void st7796_init(const struct st7796_config *c, uint16_t w, uint16_t h) {
     gpio_init(config->gpio_rst);
     gpio_set_dir(config->gpio_rst, GPIO_OUT);
 
-    // Initialize backlight pin
+    // Initialize backlight pin with PWM for brightness control
     // Most TFT displays have LED backlights that need power
     if (config->gpio_bl >= 0) {
-        gpio_init(config->gpio_bl);
-        gpio_set_dir(config->gpio_bl, GPIO_OUT);
-        gpio_put(config->gpio_bl, 1); // Turn on backlight immediately
+        // Configure GPIO for PWM function
+        gpio_set_function(config->gpio_bl, GPIO_FUNC_PWM);
+        
+        // Find PWM slice and channel for this GPIO
+        pwm_slice = pwm_gpio_to_slice_num(config->gpio_bl);
+        pwm_channel = pwm_gpio_to_channel(config->gpio_bl);
+        
+        // Configure PWM
+        // PWM frequency = clock_freq / (wrap + 1)
+        // We want ~1 kHz to avoid flicker: 125 MHz / 125000 = 1000 Hz
+        pwm_set_wrap(pwm_slice, 65535);  // 16-bit resolution
+        pwm_set_clkdiv(pwm_slice, 1.907f);  // 125 MHz / 1.907 / 65536 ≈ 1 kHz
+        
+        // Start at full brightness
+        pwm_set_chan_level(pwm_slice, pwm_channel, 65535);
+        pwm_set_enabled(pwm_slice, true);
+        
+        current_brightness = 100;
     }
 
     // Hardware reset sequence
@@ -445,7 +475,7 @@ void st7796_init(const struct st7796_config *c, uint16_t w, uint16_t h) {
  * @param color RGB565 color value (0x0000=black, 0xFFFF=white)
  */
 void st7796_fill(uint16_t color) {
-    set_window(0, 0, width - 1, height - 1);
+    st7796_set_window(0, 0, width - 1, height - 1);
 
     dc_data();
     cs_select();
@@ -505,7 +535,7 @@ void st7796_put(uint16_t color) {
  * @param y Starting Y coordinate
  */
 void st7796_set_cursor(uint16_t x, uint16_t y) {
-    set_window(x, y, width - 1, height - 1);
+    st7796_set_window(x, y, width - 1, height - 1);
 }
 
 /**
@@ -532,6 +562,39 @@ void st7796_write(const uint16_t *data, size_t len) {
     cs_deselect();
 }
 
+/**
+ * @brief Write raw buffer data directly to display
+ */
+void st7796_write_raw(const uint8_t *data, size_t len) {
+    dc_data();
+    cs_select();
+    
+    // DMA Implementation (Blocking)
+    // 1. Configure DMA channel to write from buffer to SPI TX register
+    dma_channel_configure(
+        dma_tx_channel,
+        &dma_tx_config,
+        &spi_get_hw(config->spi)->dr, // Write to SPI TX register
+        data,                         // Read from buffer
+        len,                          // Element count (bytes)
+        true                          // Start immediately
+    );
+
+    // 2. Wait for DMA to finish
+    dma_channel_wait_for_finish_blocking(dma_tx_channel);
+    
+    // 3. Wait for SPI Transfer to complete (DMA only fills the FIFO)
+    //    We need to wait for the FIFO to drain and the bus to be idle before raising CS
+    while (spi_is_busy(config->spi)) {
+        // tight_loop_contents() is empty on some platforms, 
+        // using a simple volatile read ensures the compiler doesn't optimize this away
+        // efficiently.
+        __asm volatile ("nop");
+    }
+    
+    cs_deselect();
+}
+
 /**
  * @brief Draw single pixel at specific coordinates
  * 
@@ -552,7 +615,7 @@ void st7796_write(const uint16_t *data, size_t len) {
 void st7796_draw_pixel(uint16_t x, uint16_t y, uint16_t color) {
     if (x >= width || y >= height) return;  // Bounds check
 
-    set_window(x, y, x, y);  // 1x1 window
+    st7796_set_window(x, y, x, y);  // 1x1 window
     
     uint8_t data[2] = {(color >> 8) & 0xFF, color & 0xFF};
     dc_data();
@@ -614,7 +677,7 @@ void st7796_fill_rect(uint16_t x, uint16_t y, uint16_t w, uint16_t h, uint16_t c
     if (x + w > width) w = width - x;
     if (y + h > height) h = height - y;
 
-    set_window(x, y, x + w - 1, y + h - 1);
+    st7796_set_window(x, y, x + w - 1, y + h - 1);
     
     dc_data();
     cs_select();
@@ -934,3 +997,112 @@ void st7796_fill_triangle(uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1,
         st7796_fill_rect(a, y, b - a + 1, 1, color);
     }
 }
+
+/**
+ * @brief Set display brightness using PWM on backlight pin
+ * 
+ * Controls the backlight LED brightness by adjusting the PWM duty cycle.
+ * The brightness parameter is a percentage that's converted to the
+ * appropriate PWM level (0-65535 for 16-bit PWM).
+ * 
+ * Implementation:
+ * - brightness = 0: PWM level = 0 (backlight off)
+ * - brightness = 100: PWM level = 65535 (backlight fully on)
+ * - brightness = 50: PWM level = 32767 (50% duty cycle)
+ * 
+ * The conversion formula: PWM_level = (brightness * 65535) / 100
+ * 
+ * Human perception of brightness is logarithmic, but we use linear
+ * PWM for simplicity. For perceived linear brightness, a gamma
+ * correction curve could be applied.
+ * 
+ * @param brightness Brightness level (0-100 percent)
+ */
+void st7796_set_brightness(uint8_t brightness) {
+    // Clamp brightness to valid range
+    if (brightness > 100) {
+        brightness = 100;
+    }
+    
+    // Store current brightness
+    current_brightness = brightness;
+    
+    // Convert percentage to 16-bit PWM level (0-65535)
+    // Using 32-bit intermediate to avoid overflow
+    uint32_t pwm_level = ((uint32_t)brightness * 65535) / 100;
+    
+    // Set PWM duty cycle
+    if (config->gpio_bl >= 0) {
+        pwm_set_chan_level(pwm_slice, pwm_channel, (uint16_t)pwm_level);
+    }
+}
+
+/**
+ * @brief Get current display brightness level
+ * 
+ * Returns the brightness level that was last set via st7796_set_brightness()
+ * or the default value (100) if brightness was never changed.
+ * 
+ * @return Current brightness level (0-100 percent)
+ */
+uint8_t st7796_get_brightness(void) {
+    return current_brightness;
+}
+
+/**
+ * @brief Put display into sleep mode (low power)
+ * 
+ * Enters deep sleep mode to minimize power consumption while maintaining
+ * initialization state. The framebuffer contents and all settings are
+ * preserved, so waking up is fast.
+ * 
+ * Sleep sequence:
+ * 1. Turn off display (DISPOFF) - stops showing framebuffer
+ * 2. Enter sleep mode (SLPIN) - stops oscillator, minimal power
+ * 3. Turn off backlight - set PWM to 0
+ * 
+ * Total power savings: Display draws ~10μA in sleep vs ~150mA active
+ * Touch controller on separate I2C bus remains fully functional
+ */
+void st7796_sleep(void) {
+    // Turn off display output first
+    write_command(ST7796_DISPOFF);
+    sleep_ms(10);
+    
+    // Enter sleep mode (stops internal oscillator)
+    write_command(ST7796_SLPIN);
+    sleep_ms(120);  // Wait for sleep mode to take effect (spec: 120ms)
+    
+    // Turn off backlight to save power
+    if (config->gpio_bl >= 0) {
+        pwm_set_chan_level(pwm_slice, pwm_channel, 0);
+    }
+}
+
+/**
+ * @brief Wake display from sleep mode
+ * 
+ * Exits sleep mode and restores display to full operation.
+ * All framebuffer contents and settings are preserved.
+ * 
+ * Wake sequence:
+ * 1. Exit sleep mode (SLPOUT) - restarts oscillator
+ * 2. Wait for oscillator to stabilize (120ms)
+ * 3. Turn on display (DISPON) - starts showing framebuffer
+ * 4. Restore backlight to previous brightness
+ */
+void st7796_wake(void) {
+    // Exit sleep mode (restart oscillator)
+    write_command(ST7796_SLPOUT);
+    sleep_ms(120);  // Wait for oscillator to stabilize (spec: 120ms)
+    
+    // Turn on display output
+    write_command(ST7796_DISPON);
+    sleep_ms(10);
+    
+    // Restore backlight to previous brightness level
+    if (config->gpio_bl >= 0) {
+        uint32_t pwm_level = ((uint32_t)current_brightness * 65535) / 100;
+        pwm_set_chan_level(pwm_slice, pwm_channel, (uint16_t)pwm_level);
+    }
+}

lib/st7796/st7796.h

@@ -219,6 +219,28 @@ void st7796_put(uint16_t color);
  */
 void st7796_set_cursor(uint16_t x, uint16_t y);
 
+/**
+ * @brief Set drawing window to a specific rectangle
+ *
+ * Sets the drawing window to a rectangular region defined by (x0, y0)
+ * as the top-left corner and (x1, y1) as the bottom-right corner.
+ * Subsequent write operations will only affect this region.
+ *
+ * This is useful for partial screen updates (dirty rectangle optimization)
+ * where only a portion of the screen needs to be redrawn, significantly
+ * improving performance by reducing SPI data transfer.
+ *
+ * @param x0 Top-left X coordinate (0 to width-1)
+ * @param y0 Top-left Y coordinate (0 to height-1)
+ * @param x1 Bottom-right X coordinate (x0 to width-1)
+ * @param y1 Bottom-right Y coordinate (y0 to height-1)
+ *
+ * Example: Update only a 100x50 region starting at (50, 50):
+ *   st7796_set_window(50, 50, 149, 99);
+ *   st7796_write_raw(pixel_data, 100 * 50 * 2);
+ */
+void st7796_set_window(uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1);
+
 /**
  * @brief Write multiple pixels at current cursor position
  * 
@@ -233,6 +255,21 @@ void st7796_set_cursor(uint16_t x, uint16_t y);
  */
 void st7796_write(const uint16_t *data, size_t len);
 
+/**
+ * @brief Write raw buffer data directly to display
+ * 
+ * Writes a buffer of bytes directly to the display without any
+ * conversion or byte swapping. This function assume the data is
+ * already in the correct format (Big-Endian RGB565) for the display.
+ * 
+ * This is significantly faster for large block transfers than
+ * st7796_write() as it uses a single SPI transaction.
+ * 
+ * @param data Pointer to raw byte buffer
+ * @param len Number of bytes to send
+ */
+void st7796_write_raw(const uint8_t *data, size_t len);
+
 /**
  * @brief Draw a single pixel at specified coordinates
  * 
@@ -357,6 +394,93 @@ void st7796_draw_triangle(uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1, ui
  */
 void st7796_fill_triangle(uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2, uint16_t color);
 
+/**
+ * @brief Set display brightness using PWM on backlight pin
+ * 
+ * Controls the backlight LED brightness using hardware PWM. The brightness
+ * is specified as a percentage (0-100), where:
+ * - 0 = Backlight completely off (minimum brightness)
+ * - 100 = Backlight fully on (maximum brightness)
+ * - Values in between = Proportional PWM duty cycle
+ * 
+ * PWM Configuration:
+ * - Frequency: 1000 Hz (1 kHz) - high enough to avoid flicker
+ * - Resolution: 16-bit (0-65535 range internally)
+ * - Smooth transitions without visible flickering
+ * 
+ * Use cases:
+ * - Power saving: Reduce brightness when idle
+ * - Auto-dimming: Lower brightness after timeout
+ * - Manual control: User brightness preferences
+ * - Night mode: Very low brightness for dark environments
+ * 
+ * @param brightness Brightness level (0-100 percent)
+ *                   0 = off, 100 = full brightness
+ * 
+ * Performance: Instant - PWM is handled by hardware
+ * 
+ * Note: Must be called after st7796_init() which configures the backlight pin
+ */
+void st7796_set_brightness(uint8_t brightness);
+
+/**
+ * @brief Get current display brightness level
+ * 
+ * Returns the currently configured brightness level as a percentage (0-100).
+ * This reflects the last value set by st7796_set_brightness() or the
+ * default value (100) if brightness was never explicitly set.
+ * 
+ * @return Current brightness level (0-100 percent)
+ */
+uint8_t st7796_get_brightness(void);
+
+/**
+ * @brief Put display into sleep mode (low power)
+ * 
+ * Enters sleep mode to save power while keeping the controller initialized.
+ * In sleep mode:
+ * - Display is turned off (blank screen)
+ * - Internal oscillator is stopped
+ * - Framebuffer contents are preserved
+ * - Backlight is turned off (PWM set to 0)
+ * - Power consumption is minimized (~10μA typical)
+ * 
+ * Touch controller remains active and functional since it's on a separate
+ * I2C bus. Touch interrupts can wake the system from sleep.
+ * 
+ * Use st7796_wake() to exit sleep mode and restore display.
+ * 
+ * Commands sent:
+ * - DISPOFF (0x28): Turn off display
+ * - SLPIN (0x10): Enter sleep mode
+ * - Backlight PWM set to 0
+ * 
+ * Performance: ~120ms to enter sleep mode
+ */
+void st7796_sleep(void);
+
+/**
+ * @brief Wake display from sleep mode
+ * 
+ * Exits sleep mode and restores display to normal operation.
+ * After waking:
+ * - Internal oscillator restarts
+ * - Display controller becomes active
+ * - Framebuffer contents are preserved
+ * - Display is turned on
+ * - Backlight is restored to previous brightness
+ * 
+ * Commands sent:
+ * - SLPOUT (0x11): Exit sleep mode
+ * - DISPON (0x29): Turn on display
+ * - Backlight PWM restored to saved level
+ * 
+ * Performance: ~120ms to fully wake up
+ * 
+ * Note: Must call st7796_init() before first use of sleep/wake
+ */
+void st7796_wake(void);
+
 #ifdef __cplusplus
 }
 #endif

screenlog.0

@@ -0,0 +1,528 @@
+INT: FALL
+Processing touch: flag=1, event_down=1
+Touch DOWN at (215,122)
+INT: RISE
+Processing touch: flag=1, event_down=0
+Touch UP
+INT: FALL
+Processing touch: flag=1, event_down=1
+Touch DOWN at (203,137)
+INT: RISE
+Processing touch: flag=1, event_down=0
+Touch UP
+INT: FALL
+Processing touch: flag=1, event_down=1
+Touch DOWN at (312,131)
+INT: RISE
+Processing touch: flag=1, event_down=0
+Touch UP
+INT: FALL
+Processing touch: flag=1, event_down=1
+Touch DOWN at (355,140)
+INT: RISE
+Processing touch: flag=1, event_down=0
+Touch UP
+INT: FALL
+Processing touch: flag=1, event_down=1
+Touch DOWN at (376,273)
+INT: RISE
+Processing touch: flag=1, event_down=0
+Touch UP
+INT: FALL
+Processing touch: flag=1, event_down=1
+Touch DOWN at (357,277)
+INT: RISE
+Processing touch: flag=1, event_down=0
+Touch UP
+INT: FALL
+Processing touch: flag=1, event_down=1
+Touch DOWN at (323,258)
+INT: RISE
+Processing touch: flag=1, event_down=0
+Touch UP
+INT: FALL
+Processing touch: flag=1, event_down=1
+Touch DOWN at (321,261)
+INT: RISE
+Processing touch: flag=1, event_down=0
+Touch UP
+INT: FALL
+Processing touch: flag=1, event_down=1
+Touch DOWN at (89,291)
+INT: RISE
+Processing touch: flag=1, event_down=0
+Touch UP
+INT: FALL
+Processing touch: flag=1, event_down=1
+Touch DOWN at (327,264)
+INT: RISE
+Processing touch: flag=1, event_down=0
+Touch UP
+INT: FALL
+Processing touch: flag=1, event_down=1
+Touch DOWN at (315,250)
+INT: RISE
+Processing touch: flag=1, event_down=0
+Touch UP
+INT: FALL
+Processing touch: flag=1, event_down=1
+Touch DOWN at (262,151)
+INT: RISE
+Processing touch: flag=1, event_down=0
+Touch UP
+INT: FALL
+Processing touch: flag=1, event_down=1
+Touch DOWN at (319,150)
+INT: RISE
+Processing touch: flag=1, event_down=0
+Touch UP
+Long press detected - returning to launcher
+Launcher reset - returning to menu
+INT: FALL
+Processing touch: flag=1, event_down=1
+Touch DOWN at (358,157)
+Touch at (358,157) in launcher
+Selected game: Snake Game
+Lua bindings registered
+LuaGame Error [load script]: [string "/games/SNAKE.LUA"]:113: unexpected symbol near ','
+LuaGame: Failed to load /games/SNAKE.LUA: load script: [string "/games/SNAKE.LUA"]:113: unexpected symbol near ','
+Game launched successfully
+INT: RISE
+INT: FALL
+Processing touch: flag=1, event_down=1
+Touch DOWN at (164,97)
+INT: RISE
+Processing touch: flag=1, event_down=0
+Touch UP
+INT: FALL
+Processing touch: flag=1, event_down=1
+Touch DOWN at (194,215)
+INT: RISE
+Processing touch: flag=1, event_down=0
+Touch UP
+INT: FALL
+Processing touch: flag=1, event_down=1
+Touch DOWN at (288,289)
+INT: RISE
+Processing touch: flag=1, event_down=0
+Touch UP
+INT: FALL
+Processing touch: flag=1, event_down=1
+Touch DOWN at (285,169)
+INT: RISE
+Processing touch: flag=1, event_down=0
+Touch UP
+INT: FALL
+Processing touch: flag=1, event_down=1
+Touch DOWN at (255,117)
+INT: RISE
+Processing touch: flag=1, event_down=0
+Touch UP
+INT: FALL
+Processing touch: flag=1, event_down=1
+Touch DOWN at (168,100)
+INT: RISE
+Processing touch: flag=1, event_down=0
+Touch UP
+Long press detected - returning to launcher
+Launcher reset - returning to menu
+INT: FALL
+Processing touch: flag=1, event_down=1
+Touch DOWN at (424,264)
+Touch at (424,264) in launcher
+INT: RISE
+INT: FALL
+Processing touch: flag=1, event_down=1
+Touch DOWN at (389,237)
+INT: RISE
+INT: FALL
+Processing touch: flag=1, event_down=1
+Touch DOWN at (392,247)
+INT: RISE
+INT: FALL
+Processing touch: flag=1, event_down=1
+Touch DOWN at (399,249)
+INT: RISE
+INT: FALL
+Processing touch: flag=1, event_down=1
+Touch DOWN at (138,49)
+INT: RISE
+INT: FALL
+Processing touch: flag=1, event_down=1
+Touch DOWN at (125,111)
+INT: RISE
+INT: FALL
+Processing touch: flag=1, event_down=1
+Touch DOWN at (80,146)
+INT: RISE
+INT: FALL
+Processing touch: flag=1, event_down=1
+Touch DOWN at (125,37)
+INT: RISE
+INT: FALL
+Processing touch: flag=1, event_down=1
+Touch DOWN at (100,73)
+INT: RISE
+INT: FALL
+Processing touch: flag=1, event_down=1
+Touch DOWN at (82,154)
+INT: RISE
+INT: FALL
+INT: RISE
+Processing touch: flag=1, event_down=0
+Touch UP
+INT: FALL
+INT: RISE
+INT: FALL
+Processing touch: flag=1, event_down=1
+Touch DOWN at (120,255)
+Touch at (120,255) in launcher
+INT: RISE
+INT: FALL
+INT: RISE
+Processing touch: flag=1, event_down=0
+Touch UP
+INT: FALL
+INT: RISE
+INT: FALL
+Processing touch: flag=1, event_down=1
+Touch DOWN at (191,125)
+Touch at (191,125) in launcher
+Selected game: Touch Counter
+Lua bindings registered
+LuaGame Error [load script]: [string "/games/COUNTER.LUA"]:36: unexpected symbol near ','
+LuaGame: Failed to load /games/COUNTER.LUA: load script: [string "/games/COUNTER.LUA"]:36: unexpected symbol near ','
+Game launched successfully
+INT: RISE
+INT: FALL
+Processing touch: flag=1, event_down=1
+Touch DOWN at (165,106)
+INT: RISE
+Processing touch: flag=1, event_down=0
+Touch UP
+INT: FALL
+Processing touch: flag=1, event_down=1
+Touch DOWN at (121,224)
+INT: RISE
+Processing touch: flag=1, event_down=0
+Touch UP
+INT: FALL
+Processing touch: flag=1, event_down=1
+Touch DOWN at (253,160)
+INT: RISE
+Processing touch: flag=1, event_down=0
+Touch UP
+INT: FALL
+Processing touch: flag=1, event_down=1
+Touch DOWN at (258,158)
+INT: RISE
+Processing touch: flag=1, event_down=0
+Touch UP
+INT: FALL
+Processing touch: flag=1, event_down=1
+Touch DOWN at (256,156)
+INT: RISE
+Processing touch: flag=1, event_down=0
+Touch UP
+INT: FALL
+Processing touch: flag=1, event_down=1
+Touch DOWN at (255,154)
+INT: RISE
+Processing touch: flag=1, event_down=0
+Touch UP
+INT: FALL
+Processing touch: flag=1, event_down=1
+Touch DOWN at (295,161)
+LuaGame Error [draw]: [string "/games/2048.LUA"]:145: bad argument #1 to 'rect' (number has no integer representation)
+INT: RISE
+Processing touch: flag=1, event_down=0
+Touch UP
+INT: FALL
+Processing touch: flag=1, event_down=1
+Touch DOWN at (296,157)
+LuaGame Error [draw]: [string "/games/2048.LUA"]:145: bad argument #1 to 'rect' (number has no integer representation)
+INT: RISE
+LuaGame Error [draw]: [string "/games/2048.LUA"]:145: bad argument #1 to 'rect' (number has no integer representation)
+Processing touch: flag=1, event_down=0
+Touch UP
+INT: FALL
+Processing touch: flag=1, event_down=1
+INT: RISE
+Touch DOWN at (477,202)
+LuaGame Error [draw]: [string "/games/2048.LUA"]:145: bad argument #1 to 'rect' (number has no integer representation)
+LuaGame Error [draw]: [string "/games/2048.LUA"]:145: bad argument #1 to 'rect' (number has no integer representation)
+LuaGame Error [draw]: [string "/games/2048.LUA"]:145: bad argument #1 to 'rect' (number has no integer representation)
+LuaGame Error [draw]: [string "/games/2048.LUA"]:145: bad argument #1 to 'rect' (number has no integer representation)
+LuaGame Error [draw]: [string "/games/2048.LUA"]:145: bad argument #1 to 'rect' (number has no integer representation)
+LuaGame Error [draw]: [string "/games/2048.LUA"]:145: bad argument #1 to 'rect' (number has no integer representation)
+LuaGame Error [draw]: [string "/games/2048.LUA"]:145: bad argument #1 to 'rect' (number has no integer representation)
+LuaGame Error [draw]: [string "/games/2048.LUA"]:145: bad argument #1 to 'rect' (number has no integer representation)
+LuaGame Error [draw]: [string "/games/2048.LUA"]:145: bad argument #1 to 'rect' (number has no integer representation)
+LuaGame Error [draw]: [string "/games/2048.LUA"]:145: bad argument #1 to 'rect' (number has no integer representation)
+LuaGame Error [draw]: [string "/games/2048.LUA"]:145: bad argument #1 to 'rect' (number has no integer representation)
+LuaGame Error [draw]: [string "/games/2048.LUA"]:145: bad argument #1 to 'rect' (number has no integer representation)
+INT: FALL
+Processing touch: flag=1, event_down=1
+Touch DOWN at (236,221)
+LuaGame Error [draw]: [string "/games/2048.LUA"]:145: bad argument #1 to 'rect' (number has no integer representation)
+LuaGame Error [draw]: [string "/games/2048.LUA"]:145: bad argument #1 to 'rect' (number has no integer representation)
+INT: RISE
+Processing touch: flag=1, event_down=0
+Touch UP
+INT: FALL
+Processing touch: flag=1, event_down=1
+Touch DOWN at (338,182)
+LuaGame Error [draw]: [string "/games/2048.LUA"]:145: bad argument #1 to 'rect' (number has no integer representation)
+LuaGame Error [draw]: [string "/games/2048.LUA"]:145: bad argument #1 to 'rect' (number has no integer representation)
+INT: RISE
+Processing touch: flag=1, event_down=0
+Touch UP
+TFT: Dimmed to 5%
+INT: FALL
+Processing touch: flag=1, event_down=1
+Touch DOWN at (306,162)
+TFT: Restored brightness
+INT: RISE
+Processing touch: flag=1, event_down=0
+Touch UP
+INT: FALL
+Processing touch: flag=1, event_down=1
+Touch DOWN at (338,116)
+INT: RISE
+Processing touch: flag=1, event_down=0
+Touch UP
+INT: FALL
+Processing touch: flag=1, event_down=1
+Touch DOWN at (208,258)
+LuaGame Error [draw]: [string "/games/2048.LUA"]:145: bad argument #1 to 'rect' (number has no integer representation)
+LuaGame Error [draw]: [string "/games/2048.LUA"]:145: bad argument #1 to 'rect' (number has no integer representation)
+INT: RISE
+Processing touch: flag=1, event_down=0
+Touch UP
+INT: FALL
+Processing touch: flag=1, event_down=1
+Touch DOWN at (232,55)
+LuaGame Error [draw]: [string "/games/2048.LUA"]:145: bad argument #1 to 'rect' (number has no integer representation)
+INT: RISE
+Processing touch: flag=1, event_down=0
+Touch UP
+INT: FALL
+Processing touch: flag=1, event_down=1
+Touch DOWN at (37,160)
+LuaGame Error [draw]: [string "/games/2048.LUA"]:145: bad argument #1 to 'rect' (number has no integer representation)
+LuaGame Error [draw]: [string "/games/2048.LUA"]:145: bad argument #1 to 'rect' (number has no integer representation)
+INT: RISE
+Processing touch: flag=1, event_down=0
+Touch UP
+INT: FALL
+Processing touch: flag=1, event_down=1
+Touch DOWN at (224,208)
+LuaGame Error [draw]: [string "/games/2048.LUA"]:145: bad argument #1 to 'rect' (number has no integer representation)
+LuaGame Error [draw]: [string "/games/2048.LUA"]:145: bad argument #1 to 'rect' (number has no integer representation)
+INT: RISE
+Processing touch: flag=1, event_down=0
+Touch UP
+INT: FALL
+Processing touch: flag=1, event_down=1
+Touch DOWN at (53,150)
+LuaGame Error [draw]: [string "/games/2048.LUA"]:145: bad argument #1 to 'rect' (number has no integer representation)
+LuaGame Error [draw]: [string "/games/2048.LUA"]:145: bad argument #1 to 'rect' (number has no integer representation)
+LuaGame Error [draw]: [string "/games/2048.LUA"]:145: bad argument #1 to 'rect' (number has no integer representation)
+LuaGame Error [draw]: [string "/games/2048.LUA"]:145: bad argument #1 to 'rect' (number has no integer representation)
+INT: RISE
+Processing touch: flag=1, event_down=0
+Touch UP
+INT: FALL
+Processing touch: flag=1, event_down=1
+Touch DOWN at (225,239)
+INT: RISE
+Processing touch: flag=1, event_down=0
+Touch UP
+INT: FALL
+Processing touch: flag=1, event_down=1
+Touch DOWN at (247,231)
+INT: RISE
+Processing touch: flag=1, event_down=0
+Touch UP
+INT: FALL
+Processing touch: flag=1, event_down=1
+Touch DOWN at (152,187)
+LuaGame Error [draw]: [string "/games/2048.LUA"]:145: bad argument #1 to 'rect' (number has no integer representation)
+LuaGame Error [draw]: [string "/games/2048.LUA"]:145: bad argument #1 to 'rect' (number has no integer representation)
+LuaGame Error [draw]: [string "/games/2048.LUA"]:145: bad argument #1 to 'rect' (number has no integer representation)
+LuaGame Error [draw]: [string "/games/2048.LUA"]:145: bad argument #1 to 'rect' (number has no integer representation)
+LuaGame Error [draw]: [string "/games/2048.LUA"]:145: bad argument #1 to 'rect' (number has no integer representation)
+LuaGame Error [draw]: [string "/games/2048.LUA"]:145: bad argument #1 to 'rect' (number has no integer representation)
+LuaGame Error [draw]: [string "/games/2048.LUA"]:145: bad argument #1 to 'rect' (number has no integer representation)
+INT: RISE
+Processing touch: flag=1, event_down=0
+Touch UP
+INT: FALL
+Processing touch: flag=1, event_down=1
+Touch DOWN at (426,157)
+LuaGame Error [draw]: [string "/games/2048.LUA"]:145: bad argument #1 to 'rect' (number has no integer representation)
+INT: RISE
+Processing touch: flag=1, event_down=0
+Touch UP
+LuaGame Error [draw]: [string "/games/2048.LUA"]:145: bad argument #1 to 'rect' (number has no integer representation)
+INT: FALL
+Processing touch: flag=1, event_down=1
+Touch DOWN at (198,272)
+LuaGame Error [draw]: [string "/games/2048.LUA"]:145: bad argument #1 to 'rect' (number has no integer representation)
+INT: RISE
+Processing touch: flag=1, event_down=0
+Touch UP
+INT: FALL
+Processing touch: flag=1, event_down=1
+Touch DOWN at (384,191)
+LuaGame Error [draw]: [string "/games/2048.LUA"]:145: bad argument #1 to 'rect' (number has no integer representation)
+LuaGame Error [draw]: [string "/games/2048.LUA"]:145: bad argument #1 to 'rect' (number has no integer representation)
+INT: RISE
+Processing touch: flag=1, event_down=0
+Touch UP
+INT: FALL
+Processing touch: flag=1, event_down=1
+Touch DOWN at (44,195)
+LuaGame Error [draw]: [string "/games/2048.LUA"]:145: bad argument #1 to 'rect' (number has no integer representation)
+INT: RISE
+Processing touch: flag=1, event_down=0
+Touch UP
+INT: FALL
+Processing touch: flag=1, event_down=1
+Touch DOWN at (283,266)
+LuaGame Error [draw]: [string "/games/2048.LUA"]:145: bad argument #1 to 'rect' (number has no integer representation)
+INT: RISE
+Processing touch: flag=1, event_down=0
+Touch UP
+LuaGame Error [draw]: [string "/games/2048.LUA"]:145: bad argument #1 to 'rect' (number has no integer representation)
+INT: FALL
+Processing touch: flag=1, event_down=1
+Touch DOWN at (50,215)
+LuaGame Error [draw]: [string "/games/2048.LUA"]:145: bad argument #1 to 'rect' (number has no integer representation)
+INT: RISE
+Processing touch: flag=1, event_down=0
+Touch UP
+INT: FALL
+Processing touch: flag=1, event_down=1
+Touch DOWN at (287,265)
+INT: RISE
+Processing touch: flag=1, event_down=0
+Touch UP
+INT: FALL
+Processing touch: flag=1, event_down=1
+Touch DOWN at (189,275)
+INT: RISE
+Processing touch: flag=1, event_down=0
+Touch UP
+INT: FALL
+Processing touch: flag=1, event_down=1
+Touch DOWN at (421,142)
+LuaGame Error [draw]: [string "/games/2048.LUA"]:145: bad argument #1 to 'rect' (number has no integer representation)
+LuaGame Error [draw]: [string "/games/2048.LUA"]:145: bad argument #1 to 'rect' (number has no integer representation)
+LuaGame Error [draw]: [string "/games/2048.LUA"]:145: bad argument #1 to 'rect' (number has no integer representation)
+LuaGame Error [draw]: [string "/games/2048.LUA"]:145: bad argument #1 to 'rect' (number has no integer representation)
+LuaGame Error [draw]: [string "/games/2048.LUA"]:145: bad argument #1 to 'rect' (number has no integer representation)
+INT: RISE
+Processing touch: flag=1, event_down=0
+Touch UP
+INT: FALL
+Processing touch: flag=1, event_down=1
+Touch DOWN at (43,192)
+LuaGame Error [draw]: [string "/games/2048.LUA"]:145: bad argument #1 to 'rect' (number has no integer representation)
+INT: RISE
+Processing touch: flag=1, event_down=0
+Touch UP
+INT: FALL
+Processing touch: flag=1, event_down=1
+Touch DOWN at (390,155)
+LuaGame Error [draw]: [string "/games/2048.LUA"]:145: bad argument #1 to 'rect' (number has no integer representation)
+LuaGame Error [draw]: [string "/games/2048.LUA"]:145: bad argument #1 to 'rect' (number has no integer representation)
+LuaGame Error [draw]: [string "/games/2048.LUA"]:145: bad argument #1 to 'rect' (number has no integer representation)
+LuaGame Error [draw]: [string "/games/2048.LUA"]:145: bad argument #1 to 'rect' (number has no integer representation)
+LuaGame Error [draw]: [string "/games/2048.LUA"]:145: bad argument #1 to 'rect' (number has no integer representation)
+INT: RISE
+Processing touch: flag=1, event_down=0
+Touch UP
+INT: FALL
+Processing touch: flag=1, event_down=1
+Touch DOWN at (48,204)
+LuaGame Error [draw]: [string "/games/2048.LUA"]:145: bad argument #1 to 'rect' (number has no integer representation)
+INT: RISE
+Processing touch: flag=1, event_down=0
+Touch UP
+INT: FALL
+Processing touch: flag=1, event_down=1
+Touch DOWN at (258,58)
+LuaGame Error [draw]: [string "/games/2048.LUA"]:145: bad argument #1 to 'rect' (number has no integer representation)
+INT: RISE
+Processing touch: flag=1, event_down=0
+Touch UP
+INT: FALL
+Processing touch: flag=1, event_down=1
+Touch DOWN at (275,284)
+LuaGame Error [draw]: [string "/games/2048.LUA"]:145: bad argument #1 to 'rect' (number has no integer representation)
+LuaGame Error [draw]: [string "/games/2048.LUA"]:145: bad argument #1 to 'rect' (number has no integer representation)
+INT: RISE
+Processing touch: flag=1, event_down=0
+Touch UP
+INT: FALL
+Processing touch: flag=1, event_down=1
+Touch DOWN at (23,202)
+LuaGame Error [draw]: [string "/games/2048.LUA"]:145: bad argument #1 to 'rect' (number has no integer representation)
+INT: RISE
+Processing touch: flag=1, event_down=0
+Touch UP
+INT: FALL
+Processing touch: flag=1, event_down=1
+Touch DOWN at (173,173)
+INT: RISE
+Processing touch: flag=1, event_down=0
+Touch UP
+INT: FALL
+Processing touch: flag=1, event_down=1
+Touch DOWN at (121,151)
+INT: RISE
+Processing touch: flag=1, event_down=0
+Touch UP
+INT: FALL
+Processing touch: flag=1, event_down=1
+Touch DOWN at (71,119)
+INT: RISE
+Processing touch: flag=1, event_down=0
+Touch UP
+INT: FALL
+Processing touch: flag=1, event_down=1
+Touch DOWN at (220,109)
+INT: RISE
+Processing touch: flag=1, event_down=0
+Touch UP
+INT: FALL
+Processing touch: flag=1, event_down=1
+Touch DOWN at (313,124)
+INT: RISE
+Processing touch: flag=1, event_down=0
+Touch UP
+INT: FALL
+Processing touch: flag=1, event_down=1
+Touch DOWN at (235,140)
+INT: RISE
+Processing touch: flag=1, event_down=0
+Touch UP
+INT: FALL
+Processing touch: flag=1, event_down=1
+Touch DOWN at (131,185)
+INT: RISE
+Processing touch: flag=1, event_down=0
+Touch UP
+INT: FALL
+Processing touch: flag=1, event_down=1
+Touch DOWN at (269,54)
+INT: RISE
+Processing touch: flag=1, event_down=0
+Touch UP
+INT: FALL
+Processing touch: flag=1, event_down=1
+Touch DOWN at (227,165)
+INT: RISE
+Processing touch: flag=1, event_down=0
+Touch UP

upload_game.py

@@ -0,0 +1,149 @@
+#!/usr/bin/env python3
+"""
+Lua Game Uploader for RP2350
+Rapidly upload and execute Lua games via USB serial for quick iteration.
+
+Usage:
+    python upload_game.py <lua_file> [serial_port]
+
+Example:
+    python upload_game.py my_game.lua /dev/ttyACM0
+    python upload_game.py my_game.lua COM3
+"""
+
+import sys
+import os
+import base64
+import serial
+import time
+from pathlib import Path
+
+def find_serial_port():
+    """Auto-detect the RP2350 serial port"""
+    import serial.tools.list_ports
+
+    # Look for Pico/RP2350 devices
+    ports = list(serial.tools.list_ports.comports())
+    for port in ports:
+        # Common VID/PID for Raspberry Pi Pico
+        if 'Pico' in port.description or \
+           'RP2350' in port.description or \
+           'RP2040' in port.description or \
+           (port.vid == 0x2E8A):  # Raspberry Pi VID
+            return port.device
+
+    # Fallback: return first available port
+    if ports:
+        print(f"Warning: Could not find RP2350, using first available port: {ports[0].device}")
+        return ports[0].device
+
+    return None
+
+def upload_game(lua_file, serial_port=None):
+    """Upload a Lua game file to the RP2350 and execute it"""
+
+    # Check if file exists
+    if not os.path.exists(lua_file):
+        print(f"Error: File '{lua_file}' not found")
+        return False
+
+    # Read the file
+    with open(lua_file, 'rb') as f:
+        file_data = f.read()
+
+    file_size = len(file_data)
+    filename = os.path.basename(lua_file)
+
+    # Ensure filename has .lua extension
+    if not filename.endswith('.lua'):
+        filename += '.lua'
+
+    print(f"Uploading {filename} ({file_size} bytes)...")
+
+    # Auto-detect serial port if not provided
+    if serial_port is None:
+        serial_port = find_serial_port()
+        if serial_port is None:
+            print("Error: No serial port found. Please specify manually.")
+            return False
+        print(f"Using serial port: {serial_port}")
+
+    try:
+        # Open serial connection
+        ser = serial.Serial(serial_port, 115200, timeout=5)
+        time.sleep(0.1)  # Wait for connection to stabilize
+
+        # Encode file data as base64
+        base64_data = base64.b64encode(file_data).decode('ascii')
+
+        # Send upload command
+        command = f"UPLOAD {filename} {file_size}\n"
+        print(f"Sending command: {command.strip()}")
+        ser.write(command.encode('ascii'))
+
+        # Send base64-encoded file data
+        print("Sending file data...")
+        ser.write(base64_data.encode('ascii'))
+        ser.write(b'\n')
+
+        # Send END marker
+        ser.write(b'END\n')
+        print("Upload complete, waiting for confirmation...")
+
+        # Read response from device
+        start_time = time.time()
+        response_lines = []
+        while time.time() - start_time < 10:  # 10 second timeout
+            if ser.in_waiting > 0:
+                line = ser.readline().decode('utf-8', errors='ignore').strip()
+                if line:
+                    print(f"  << {line}")
+                    response_lines.append(line)
+
+                    # Check for success
+                    if line.startswith('OK'):
+                        print(f"✓ File written successfully!")
+
+                    if line.startswith('LAUNCHED'):
+                        game_name = line.split(' ', 1)[1] if ' ' in line else filename
+                        print(f"✓ Game '{game_name}' launched!")
+                        ser.close()
+                        return True
+
+                    # Check for error
+                    if line.startswith('ERROR'):
+                        print(f"✗ Upload failed: {line}")
+                        ser.close()
+                        return False
+
+        print("Warning: No response received from device")
+        ser.close()
+        return False
+
+    except serial.SerialException as e:
+        print(f"Serial error: {e}")
+        return False
+    except Exception as e:
+        print(f"Unexpected error: {e}")
+        return False
+
+def main():
+    if len(sys.argv) < 2:
+        print(__doc__)
+        print("\nAvailable serial ports:")
+        try:
+            import serial.tools.list_ports
+            for port in serial.tools.list_ports.comports():
+                print(f"  {port.device}: {port.description}")
+        except ImportError:
+            print("  (install pyserial to see available ports)")
+        sys.exit(1)
+
+    lua_file = sys.argv[1]
+    serial_port = sys.argv[2] if len(sys.argv) > 2 else None
+
+    success = upload_game(lua_file, serial_port)
+    sys.exit(0 if success else 1)
+
+if __name__ == '__main__':
+    main()