Ken Van Hoeylandt
1955cda81b
* Use single tactility.py and symbolic links * Fix for MistifyDemo name * Made snake a bit easier * Update tactility.py 3.4.0 * Bump Snake version * Bump version code
110 lines
3.0 KiB
C
110 lines
3.0 KiB
C
/**
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* @file SnakeHelpers.h
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* @brief Data structures and constants for the Snake game
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*/
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#ifndef SNAKE_HELPERS_H
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#define SNAKE_HELPERS_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*********************
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* INCLUDES
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*********************/
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#include "lvgl.h"
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#include <stdbool.h>
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#include <stdint.h>
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/*********************
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* DEFINES
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*********************/
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// Cell sizes in pixels (larger = easier, smaller = harder)
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#define SNAKE_CELL_LARGE 16 // Easy - bigger cells, fewer cells fit
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#define SNAKE_CELL_MEDIUM 12 // Medium
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#define SNAKE_CELL_SMALL 8 // Hard - smaller cells, more cells fit
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// Game timing
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#define SNAKE_GAME_SPEED_MS 300 // Initial timer interval in milliseconds
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#define SNAKE_MIN_SPEED_MS 60 // Minimum (fastest) timer interval
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#define SNAKE_SPEED_DECREASE_MS 5 // Speed increase per food eaten (ms reduction)
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// Visual settings
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#define SNAKE_INITIAL_LENGTH 3
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#define SNAKE_CELL_RADIUS 2
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// Colors
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#define SNAKE_HEAD_COLOR lv_color_hex(0x4CAF50) // Green
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#define SNAKE_BODY_COLOR lv_color_hex(0x81C784) // Light green
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#define SNAKE_FOOD_COLOR lv_color_hex(0xF44336) // Red
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#define SNAKE_BG_COLOR lv_color_hex(0x212121) // Dark background
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#define SNAKE_GRID_COLOR lv_color_hex(0x424242) // Grid lines
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/**********************
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* TYPEDEFS
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**********************/
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/**
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* @brief Snake movement direction
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*/
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typedef enum {
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SNAKE_DIR_UP = 0,
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SNAKE_DIR_DOWN,
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SNAKE_DIR_LEFT,
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SNAKE_DIR_RIGHT
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} snake_direction_t;
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/**
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* @brief Snake body segment (doubly-linked list node)
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*/
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typedef struct snake_segment {
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int16_t x; // Grid x position
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int16_t y; // Grid y position
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lv_obj_t* obj; // LVGL object for this segment
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struct snake_segment* prior; // Previous segment (towards tail)
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struct snake_segment* next; // Next segment (towards head)
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} snake_segment_t;
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/**
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* @brief Complete game state
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*/
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typedef struct {
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// Snake data
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snake_segment_t* head; // Snake head (linked list)
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// UI elements
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lv_obj_t* widget; // Parent widget (for events)
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lv_obj_t* container; // Main game container
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lv_obj_t* food; // Food object
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lv_timer_t* timer; // Game timer
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// Game state
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snake_direction_t direction; // Current movement direction
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snake_direction_t next_direction;// Buffered direction (prevents 180° reversal)
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// Grid settings (supports non-square)
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uint16_t grid_width; // Grid width in cells
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uint16_t grid_height; // Grid height in cells
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uint16_t cell_size; // Pixel size per cell
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// Score tracking
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uint16_t score;
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uint16_t length;
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// Food position
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int16_t food_x;
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int16_t food_y;
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// State flags
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bool game_over;
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bool paused;
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bool wall_collision_enabled; // If true, hitting walls = game over
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} snake_game_t;
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#ifdef __cplusplus
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} /*extern "C"*/
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#endif
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#endif /*SNAKE_HELPERS_H*/
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