/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * 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 3 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, see <http://www.gnu.org/licenses/>.
 *
 */

#ifndef GLK_ALAN3_STATE
#define GLK_ALAN3_STATE

/* Header file for instruction state and undo handling in Alan interpreter */

#include "glk/alan3/types.h"

namespace Glk {
namespace Alan3 {

/* DATA */
struct game_state;
typedef struct game_state GameState;

/* FUNCTIONS */
extern bool anySavedState(void);
extern void initStateStack(void);
extern void rememberGameState(void);
extern void forgetGameState(void);
extern void rememberCommands(void);
extern void recallGameState(void);
extern char *recreatePlayerCommand(void);
extern void terminateStateStack(void);
extern void deallocateGameState(GameState *gameState);

} // End of namespace Alan3
} // End of namespace Glk

#endif
