/*! \file gamestate.h
 *  \brief Gamestate management.
 */
/*
 * Copyright (c) Sebastian Krzyszkowiak <dos@dosowisko.net>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
 */
#ifndef LIBSUPERDERPY_GAMESTATE_H
#define LIBSUPERDERPY_GAMESTATE_H

#include <allegro5/allegro.h>

struct Game;

struct Gamestate_API {
		void (*Gamestate_Draw)(struct Game *game, void* data);
		void (*Gamestate_Logic)(struct Game *game, void* data);

		void* (*Gamestate_Load)(struct Game *game, void (*progress)(struct Game *game));
		void (*Gamestate_Start)(struct Game *game, void* data);
		void (*Gamestate_Pause)(struct Game *game, void* data);
		void (*Gamestate_Resume)(struct Game *game, void* data);
		void (*Gamestate_Stop)(struct Game *game, void* data);
		void (*Gamestate_Unload)(struct Game *game, void* data);

		void (*Gamestate_ProcessEvent)(struct Game *game, void* data, ALLEGRO_EVENT *ev);
		void (*Gamestate_Reload)(struct Game *game, void* data);

		int *Gamestate_ProgressCount;
};

struct Gamestate {
		char* name;
		void* handle;
		bool loaded, pending_load, pending_unload;
		bool started, pending_start, pending_stop;
		bool frozen;
		bool showLoading;
		bool paused;
		struct Gamestate *next;
		void* data;
		struct Gamestate_API *api;
};

void LoadGamestate(struct Game *game, const char* name);
void UnloadGamestate(struct Game *game, const char* name);
void RegisterGamestate(struct Game *game, const char* name, struct Gamestate_API *api);
void StartGamestate(struct Game *game, const char* name);
void StopGamestate(struct Game *game, const char* name);
void PauseGamestate(struct Game *game, const char* name);
void ResumeGamestate(struct Game *game, const char* name);
void PauseAllGamestates(struct Game *game);
void ResumeAllGamestates(struct Game *game);
void UnloadAllGamestates(struct Game *game);
void SwitchGamestate(struct Game *game, const char* current, const char* n);
void SwitchCurrentGamestate(struct Game *game, const char* n);
void ChangeGamestate(struct Game *game, const char* current, const char* n);
void ChangeCurrentGamestate(struct Game *game, const char* n);
void StopCurrentGamestate(struct Game *game);
void PauseCurrentGamestate(struct Game *game);
void UnloadCurrentGamestate(struct Game *game);

#endif