Initial game launcher

lib/game_launcher.cpp

@@ -0,0 +1,131 @@
+// ============================================================================
+// GAME LAUNCHER IMPLEMENTATION
+// ============================================================================
+// Menu system for selecting and launching games
+
+#include "game_launcher.h"
+#include "display/low_level_render.h"
+#include "display/low_level_gui.h"
+#include <stdio.h>
+
+GameLauncher::GameLauncher(uint16_t width, uint16_t height, 
+                          LowLevelRenderer* renderer, LowLevelGUI* gui)
+    : width(width), height(height), renderer(renderer), gui(gui),
+      selected_index(0), selected_game(nullptr) {
+}
+
+void GameLauncher::register_game(const char* name, const char* description,
+                                 Game* (*factory)(uint16_t, uint16_t, LowLevelRenderer*, LowLevelGUI*)) {
+    GameEntry entry;
+    entry.name = name;
+    entry.description = description;
+    entry.factory = factory;
+    games.push_back(entry);
+    
+    printf("Registered game: %s - %s\n", name, description);
+}
+
+void GameLauncher::draw() {
+    // Draw main window
+    gui->draw_new_window(10, 10, width - 20, height - 20, "Game Launcher");
+    
+    // Draw title
+    renderer->draw_string(30, 30, "Select a Game:", true);
+    
+    // Draw game list
+    for (size_t i = 0; i < games.size(); i++) {
+        int y = MENU_Y_START + (i * MENU_ITEM_HEIGHT);
+        
+        // Highlight selected item
+        if ((int)i == selected_index) {
+            // Draw selection box
+            renderer->draw_rectangle(20, y - 5, width - 40, MENU_ITEM_HEIGHT - 10, true, 2);
+            renderer->draw_string(30, y + 2, ">", true);
+        }
+        
+        // Draw game name
+        renderer->draw_string(45, y + 2, games[i].name, true);
+        
+        // Draw description (smaller, below name)
+        renderer->draw_string(45, y + 15, games[i].description, true);
+    }
+    
+    // Draw instructions at bottom
+    const char* instructions;
+#ifdef BUTTON_KEY0_PIN
+    instructions = "Touch game or use KEY0/KEY1";
+#else
+    instructions = "Touch game to play";
+#endif
+    renderer->draw_string(30, height - 35, instructions, true);
+}
+
+bool GameLauncher::update(const InputEvent& event) {
+    bool needs_refresh = false;
+    
+    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);
+                
+                // Touch area is the entire menu item
+                if (event.y >= y - 5 && event.y < y + MENU_ITEM_HEIGHT - 5) {
+                    // Game selected - create instance
+                    printf("Selected game: %s\n", games[i].name);
+                    selected_game = games[i].factory(width, height, renderer, gui);
+                    if (selected_game) {
+                        selected_game->init();
+                        return true;  // Signal game selected
+                    }
+                    break;
+                }
+            }
+            break;
+        }
+        
+        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);
+            }
+            break;
+        }
+        
+        case INPUT_BUTTON_1: {
+            // Select current game
+            if (selected_index >= 0 && selected_index < (int)games.size()) {
+                printf("Selected game: %s\n", games[selected_index].name);
+                selected_game = games[selected_index].factory(width, height, renderer, gui);
+                if (selected_game) {
+                    selected_game->init();
+                    return true;  // Signal game selected
+                }
+            }
+            break;
+        }
+        
+        default:
+            break;
+    }
+    
+    return needs_refresh;
+}
+
+Game* GameLauncher::get_selected_game() {
+    return selected_game;
+}
+
+void GameLauncher::reset() {
+    // Clean up current game if any
+    if (selected_game) {
+        delete selected_game;
+        selected_game = nullptr;
+    }
+    selected_index = 0;
+    printf("Launcher reset - returning to menu\n");
+}

lib/game_launcher.h

@@ -0,0 +1,102 @@
+// ============================================================================
+// GAME LAUNCHER HEADER
+// ============================================================================
+// Menu system for selecting and launching games
+
+#ifndef GAME_LAUNCHER_H
+#define GAME_LAUNCHER_H
+
+#include <stdint.h>
+#include <vector>
+#include "input_event.h"
+#include "game.h"
+
+// Forward declarations
+class LowLevelRenderer;
+class LowLevelGUI;
+
+/**
+ * @brief Game entry in launcher menu
+ */
+struct GameEntry {
+    const char* name;           // Display name
+    const char* description;    // Short description
+    Game* (*factory)(uint16_t width, uint16_t height, 
+                     LowLevelRenderer* renderer, LowLevelGUI* gui);  // Factory function
+};
+
+/**
+ * @brief Game Launcher - Menu system for game selection
+ * 
+ * Displays a list of available games and allows selection via:
+ * - Touch: Tap on game name
+ * - Buttons: KEY0 to navigate, KEY1 to select
+ * 
+ * Returns the selected game instance for the main loop to run.
+ */
+class GameLauncher {
+public:
+    /**
+     * @brief Construct GameLauncher
+     * @param width Display width in pixels
+     * @param height Display height in pixels
+     * @param renderer Pointer to low-level rendering interface
+     * @param gui Pointer to GUI drawing primitives
+     */
+    GameLauncher(uint16_t width, uint16_t height, LowLevelRenderer* renderer, LowLevelGUI* gui);
+    
+    /**
+     * @brief Register a game in the launcher
+     * @param name Game display name
+     * @param description Short description
+     * @param factory Function pointer to create game instance
+     */
+    void register_game(const char* name, const char* description,
+                      Game* (*factory)(uint16_t, uint16_t, LowLevelRenderer*, LowLevelGUI*));
+    
+    /**
+     * @brief Draw the launcher menu
+     */
+    void draw();
+    
+    /**
+     * @brief Process input event in launcher
+     * @param event Input event from InputManager
+     * @return true if a game was selected (check get_selected_game())
+     */
+    bool update(const InputEvent& event);
+    
+    /**
+     * @brief Get the currently selected game instance
+     * @return Pointer to selected game, or nullptr if none selected
+     */
+    Game* get_selected_game();
+    
+    /**
+     * @brief Reset launcher to show menu again
+     */
+    void reset();
+    
+    /**
+     * @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; }
+
+private:
+    uint16_t width;
+    uint16_t height;
+    LowLevelRenderer* renderer;
+    LowLevelGUI* gui;
+    
+    std::vector<GameEntry> games;
+    int selected_index;      // Currently highlighted game
+    Game* selected_game;     // Currently running game (nullptr = in menu)
+    
+    // Menu layout constants
+    static const int MENU_Y_START = 60;
+    static const int MENU_ITEM_HEIGHT = 40;
+    static const int MENU_PADDING = 10;
+};
+
+#endif // GAME_LAUNCHER_H