game_api.hpp

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#pragma once
 
#include <stddef.h>
#include <stdint.h>
 
// ── C API (for dlopen / shared library boundary) ──────────────────────────
 
#ifdef __cplusplus
extern "C" {
#endif
 
#define GAME_API_VERSION 1
 
typedef struct SD_Application SD_Application;
 
typedef void (*Game_OnLoadFn)(SD_Application* app, void* state);
typedef void (*Game_OnUpdateFn)(SD_Application* app, void* state, float dt);
typedef void (*Game_OnUnloadFn)(SD_Application* app, void* state);
typedef void (*Game_OnReloadFn)(SD_Application* app, void* state);
 
typedef struct GameAPI {
  uint32_t        api_version;
  size_t          struct_size;
  Game_OnLoadFn   on_load;
  Game_OnUpdateFn on_update;
  Game_OnUnloadFn on_unload;
  Game_OnReloadFn on_reload;
} GameAPI;
 
typedef GameAPI (*GetGameAPIFn)();
 
#define GAME_GET_API_NAME "get_game_api"
 
#ifdef __cplusplus
} // extern "C"
#endif
 
//~ C++ API (for direct linking)
 
#ifdef __cplusplus
 
#include <SD/Application.hpp>
 
namespace game {
 
struct State {
  sd::Scene* shared_scene  = nullptr;
  sd::Scene* another_scene = nullptr;
  int        version       = 0;
  U32        view_bit      = 1;
};
 
void on_load(sd::Application& app, State& state);
void on_update(sd::Application& app, State& state, float dt);
void on_unload(sd::Application& app, State& state);
void on_reload(sd::Application& app, State& state);
 
} // namespace game
 
#endif // __cplusplus