/* This implements the scene
 * ie it will insert the scene-specific data and systems
 * based on the function called
 * */
#ifndef __SCENE_IMPL_H
#define __SCENE_IMPL_H
#include "engine.h"
#include "gui.h"

#define CONTAINER_OF(ptr, type, member) ({         \
    const typeof( ((type *)0)->member ) *__mptr = (ptr); \
    (type *)( (char *)__mptr - offsetof(type,member) );})

typedef enum TileType {
    EMPTY_TILE = 0,
    SOLID_TILE,
    ONEWAY_TILE,
    LADDER,
    SPIKES,
} TileType_t;

#define MAX_TILE_SPRITES 32

typedef struct CoinCounter
{
    uint16_t current;
    uint16_t total;
}CoinCounter_t;

typedef struct LevelCamera {
    Camera2D cam;
    Vector2 target_pos;
    float base_y;
    //Vector2 prev_pos;
    Vector2 current_vel;
    float mass;
    float c; // damping factor
    float k; // spring constant
}LevelCamera_t;

typedef struct LevelSceneData {
    TileGrid_t tilemap;
    RenderTexture2D game_viewport;
    Rectangle game_rec;
    //Camera2D cam;
    LevelCamera_t camera;
    Sprite_t* tile_sprites[MAX_TILE_SPRITES];
    LevelPack_t* level_pack;
    unsigned int current_level;
    CoinCounter_t coins;
}LevelSceneData_t;

typedef struct LevelScene {
    Scene_t scene;
    LevelSceneData_t data;
}LevelScene_t;

void init_game_scene(LevelScene_t* scene);
void free_game_scene(LevelScene_t* scene);
void init_sandbox_scene(LevelScene_t* scene);
void free_sandbox_scene(LevelScene_t* scene);
void init_level_scene_data(LevelSceneData_t* data, uint32_t max_tiles, Tile_t* tiles, Rectangle view_zone);
//void init_level_scene_data(LevelSceneData_t* data, uint32_t max_tiles, Tile_t* tiles);
void term_level_scene_data(LevelSceneData_t* data);
void reload_level_tilemap(LevelScene_t* scene);
void load_next_level_tilemap(LevelScene_t* scene);
void load_prev_level_tilemap(LevelScene_t* scene);
bool load_level_tilemap(LevelScene_t* scene, unsigned int level_num);
void change_a_tile(TileGrid_t* tilemap, unsigned int tile_idx, TileType_t new_type);

typedef enum GuiMode {
    KEYBOARD_MODE,
    MOUSE_MODE
} GuiMode_t;

typedef struct MenuSceneData {
    UIComp_t buttons[4];
    int selected_comp;
    int max_comp;
    GuiMode_t mode;
} MenuSceneData_t;

typedef struct MenuScene {
    Scene_t scene;
    MenuSceneData_t data;
} MenuScene_t;

void init_menu_scene(MenuScene_t* scene);
void free_menu_scene(MenuScene_t* scene);

#endif // __SCENE_IMPL_H