game.h

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#pragma once
 
#include <stddef.h>
#include <stdint.h>
 
#ifdef __cplusplus
extern "C" {
#endif
 
// Increment this when the GameAPI struct layout changes.
// The hot reloader rejects plugins with a mismatched version.
#define GAME_API_VERSION 1
 
typedef struct SD_Application SD_Application;
typedef struct SD_Scene SD_Scene;
typedef struct SD_RuntimeStateManager SD_RuntimeStateManager;
 
typedef struct GameState {
    SD_Scene* shared_scene;
    SD_Scene* another_scene;
    int version;
} GameState;
 
typedef void (*Game_OnLoadFn)(SD_Application* app, GameState* state);
typedef void (*Game_OnUpdateFn)(SD_Application* app, GameState* state, float dt);
typedef void (*Game_OnUnloadFn)(SD_Application* app, GameState* state);
 
typedef struct GameAPI {
    uint32_t api_version;
    size_t struct_size;
    Game_OnLoadFn on_load;
    Game_OnUpdateFn on_update;
    Game_OnUnloadFn on_unload;
} GameAPI;
 
typedef GameAPI (*GetGameAPIFn)();
 
#define GAME_GET_API_NAME "get_game_api"
 
#ifdef __cplusplus
}
#endif