1 /* Atomix -- a little puzzle game about atoms and molecules. 2 * Copyright (C) 1999 Jens Finke 3 * Copyright (C) 2005 Guilherme de S. Pastore 4 * 5 * This program is free software; you can redistribute it and/or modify 6 * it under the terms of the GNU General Public License as published by 7 * the Free Software Foundation; either version 2 of the License, or 8 * (at your option) any later version. 9 * 10 * This program is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 * GNU General Public License for more details. 14 * 15 * You should have received a copy of the GNU General Public License 16 * along with this program; if not, write to the Free Software 17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. 18 */ 19 20 #ifndef _ATOMIX_UNDO_H_ 21 #define _ATOMIX_UNDO_H_ 22 23 typedef struct 24 { 25 gpointer item; 26 gint src_row; 27 gint src_col; 28 gint dest_row; 29 gint dest_col; 30 } UndoMove; 31 32 gboolean undo_exists (void); 33 34 void undo_push_move (gpointer item, 35 gint src_row, gint src_col, 36 gint dest_row, gint dest_col); 37 38 UndoMove *undo_pop_move (void); 39 40 void undo_clear (void); 41 42 #endif /* _ATOMIX_UNDO_H_ */ 43