izanagi-2022/src/packages/game/IZ_app.h

#ifndef IZ_APP_H
#define IZ_APP_H

#include <SDL.h>
#include <libwebsockets.h>
#include "input/IZ_input.h"
#include "output/IZ_video.h"
#include "memory/IZ_pool.h"
#include "net/svc/IZ_wsclient.h"

typedef enum {
	IZ_APP_RUN_RESULT_OK,
	IZ_APP_RUN_SDL_INIT_ERROR,
	IZ_APP_RUN_VIDEO_INIT_ERROR,
	IZ_APP_RUN_INPUT_INIT_ERROR,
	IZ_APP_RUN_POOL_INIT_ERROR,
	IZ_APP_RUN_NETWORKING_ERROR,
} IZ_AppRunResult;

typedef struct {
	IZ_InputState input_state;
	IZ_VideoState video_state;
	IZ_Pool pool;

	IZ_WSClientState client;
	SDL_Thread* client_thread;
	u64 ticks;
} IZ_App;

typedef struct {
	u8 player_index: 3;
	u8 player_state: 5;
	u16 action_set;
} IZ_AppPlayerActionSyncMessage;

typedef struct {
	u8 player_index: 3;
	f32 x;
	f32 y;
	f32 right;
	f32 up;
} IZ_AppPlayerState;

typedef enum {
	IZ_MESSAGE_KIND_ACTION_SYNC = 0,
	IZ_MESSAGE_KIND_STATE_SYNC = 1,
} IZ_MessageKind;

typedef struct {
	u8 message_kind; // player
	u64 client_elapsed_time; // for synchronization
} IZ_AppMessageHeader;

typedef struct {
	u8 player_actions_count;
	IZ_AppPlayerActionSyncMessage player_actions[];
} IZ_AppPlayerActionSection;

typedef struct {
	IZ_AppMessageHeader header;
	IZ_AppPlayerActionSection player_actions;
} IZ_AppActionSyncMessage;

typedef struct {
	IZ_AppMessageHeader header;
	IZ_AppPlayerState player_state[IZ_PLAYERS];
	IZ_AppPlayerActionSection player_actions;
} IZ_AppStateSyncMessage;

IZ_ProcedureResult IZ_AppRun(IZ_App*, u8, const char**);

#endif