first there was tetris, now we have sokoban

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@1020 a1c6a512-1295-4272-9138-f99709370657

2 files changed, 615 insertions, 0 deletions

diff --git a/apps/recorder/sokoban.c b/apps/recorder/sokoban.c
new file mode 100644
index 0000000..159516e
--- /dev/null
+++ b/apps/recorder/sokoban.c
@@ -0,0 +1,586 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id: sokoban.c,v 0.01 2002/06/15 
+ *
+ * Copyright (C) 2002 Eric Linenberg
+ *
+ * All files in this archive are subject to the GNU General Public License.
+ * See the file COPYING in the source tree root for full license agreement.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+#include "config.h"
+
+#ifdef HAVE_LCD_BITMAP
+
+#include "sokoban.h"
+#include "lcd.h"
+#include "button.h"
+#include "kernel.h"
+
+#ifdef SIMULATOR
+#include <stdio.h>
+#endif
+#include <string.h>
+
+#define SOKOBAN_TITLE   "Sokoban"
+#define SOKOBAN_TITLE_FONT  2
+#define NUM_LEVELS  4
+
+int board[16][20];
+int current_level=0;
+int moves=0;
+int row=0;
+int col=0;
+int boxes_to_go=0;
+int current_spot=1;
+
+/* 320 boxes per level */
+int levels[320*NUM_LEVELS] = {
+/* level 01 */
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,2,2,2,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,2,3,2,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,2,1,2,2,2,2,0,0,0,0,0,0,
+0,0,0,0,0,0,2,2,2,4,1,4,3,2,0,0,0,0,0,0,
+0,0,0,0,0,0,2,3,1,4,5,2,2,2,0,0,0,0,0,0,
+0,0,0,0,0,0,2,2,2,2,4,2,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,2,3,2,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,2,2,2,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+/* level 02 */
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,2,2,2,2,2,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,2,1,1,1,2,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,2,5,4,4,2,0,2,2,2,0,0,0,0,0,0,
+0,0,0,0,0,2,1,4,1,2,0,2,3,2,0,0,0,0,0,0,
+0,0,0,0,0,2,2,2,1,2,2,2,3,2,0,0,0,0,0,0,
+0,0,0,0,0,0,2,2,1,1,1,1,3,2,0,0,0,0,0,0,
+0,0,0,0,0,0,2,1,1,1,2,1,1,2,0,0,0,0,0,0,
+0,0,0,0,0,0,2,1,1,1,2,2,2,2,0,0,0,0,0,0,
+0,0,0,0,0,0,2,2,2,2,2,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+/* level 03 */
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,2,2,2,2,2,2,2,0,0,0,0,0,0,0,
+0,0,0,0,0,0,2,1,1,1,1,1,2,2,2,0,0,0,0,0,
+0,0,0,0,0,2,2,4,2,2,2,1,1,1,2,0,0,0,0,0,
+0,0,0,0,0,2,1,5,1,4,1,1,4,1,2,0,0,0,0,0,
+0,0,0,0,0,2,1,3,3,2,1,4,1,2,2,0,0,0,0,0,
+0,0,0,0,0,2,2,3,3,2,1,1,1,2,0,0,0,0,0,0,
+0,0,0,0,0,0,2,2,2,2,2,2,2,2,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+/* level 04 */
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,2,2,2,2,2,0,0,0,0,0,0,
+0,0,0,0,0,0,2,2,2,2,1,1,3,2,0,0,0,0,0,0,
+0,0,0,0,0,0,2,1,1,1,4,1,1,2,0,0,0,0,0,0,
+0,0,0,0,0,0,2,1,4,4,1,4,3,2,0,0,0,0,0,0,
+0,0,0,0,0,0,2,2,5,2,2,3,3,2,0,0,0,0,0,0,
+0,0,0,0,0,0,0,2,2,2,2,2,2,2,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
+/* level 40 
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,2,2,2,2,2,2,2,2,0,0,0,0,0,0,0,
+0,0,0,0,0,2,1,1,1,1,1,1,2,0,0,0,0,0,0,0,
+0,0,0,0,0,2,1,5,1,4,2,1,2,0,0,0,0,0,0,0,
+0,0,0,0,0,2,2,1,2,1,1,1,2,0,0,0,0,0,0,0,
+0,0,0,0,0,2,1,4,2,3,2,1,2,0,0,0,0,0,0,0,
+0,0,0,0,0,2,1,1,3,4,3,4,2,0,0,0,0,0,0,0,
+0,0,0,0,0,2,2,1,2,3,2,1,2,0,0,0,0,0,0,0,
+0,0,0,0,0,0,2,1,2,3,1,1,2,2,0,0,0,0,0,0,
+0,0,0,0,0,2,2,1,4,3,2,1,1,2,0,0,0,0,0,0,
+0,0,0,0,0,2,1,1,2,1,4,1,1,2,0,0,0,0,0,0,
+0,0,0,0,0,2,1,1,1,1,1,2,2,2,0,0,0,0,0,0,
+0,0,0,0,0,2,1,1,2,2,2,2,0,0,0,0,0,0,0,0,
+0,0,0,0,0,2,2,2,2,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 */
+};
+
+
+
+void load_level(int level_to_load) {
+    int a = 0;
+    int b = 0;
+    int c = 0;
+
+    /* load level into board */
+    /* get to the current level in the level array */
+    a = level_to_load*320;
+    
+    for(b=0 ; b<16 ; b++) {
+        for (c=0 ; c<20 ; c++) {
+            board[b][c] = levels[a];
+            a++;
+            if (board[b][c]==5) {
+                row = b;
+                col = c;
+            }
+            if (board[b][c]==3)
+                boxes_to_go++;        
+        }
+    }
+    return;
+}
+
+void update_screen(void) {
+    int b = 0;
+    int c = 0;
+    char s[25];
+
+    /* load the board to the screen */
+    for(b=0 ; b<16 ; b++) {
+        for (c=0 ; c<20 ; c++) {
+   
+            /* this is a black space */
+            if (board[b][c]==0) {
+                lcd_drawrect (c*4, b*4, c*4+3, b*4+3);
+                lcd_drawrect (c*4+1, b*4+1, c*4+2, b*4+2);
+            }    
+            /* this is a wall */
+            if (board[b][c]==2) {
+                lcd_drawpixel (c*4, b*4);
+                lcd_drawpixel (c*4+2, b*4);
+                lcd_drawpixel (c*4+1, b*4+1);
+                lcd_drawpixel (c*4+3, b*4+1);
+                lcd_drawpixel (c*4,   b*4+2);
+                lcd_drawpixel (c*4+2, b*4+2);
+                lcd_drawpixel (c*4+1, b*4+3);
+                lcd_drawpixel (c*4+3, b*4+3);
+            }    
+            /* this is a box */
+            if (board[b][c]==4) {
+                lcd_drawrect (c*4, b*4, c*4+3, b*4+3);
+            }    
+            /* this is a home location */
+            if (board[b][c]==3) {
+                lcd_drawrect (c*4+1, b*4+1, c*4+2, b*4+2);
+            }  
+            /* this is you */
+            if (board[b][c]==5) {
+                lcd_drawline (c*4+1, b*4, c*4+2, b*4);
+                lcd_drawline (c*4, b*4+1, c*4+3, b*4+1);
+                lcd_drawline (c*4+1, b*4+2, c*4+2, b*4+2);
+                lcd_drawpixel (c*4, b*4+3);
+                lcd_drawpixel (c*4+3, b*4+3);
+            }
+            /* this is a box on a home spot */ 
+            if (board[b][c]==7) {
+                lcd_drawrect (c*4, b*4, c*4+3, b*4+3);
+                lcd_drawrect (c*4+1, b*4+1, c*4+2, b*4+2);                
+            }       
+        }
+    }
+    
+
+    snprintf (s, sizeof(s), "%d", current_level+1);
+    lcd_putsxy (86, 20, s, 0);
+    snprintf (s, sizeof(s), "%d", moves);
+    lcd_putsxy (86, 52, s, 0);
+
+    lcd_drawrect (80,0,111,31);
+    lcd_drawrect (80,32,111,63);
+    lcd_putsxy (81, 10, "Level", 0);
+    lcd_putsxy (81, 42, "Moves", 0);
+    /* print out the screen */
+    lcd_update();
+}
+
+
+
+void sokoban_loop(void) {
+    int ii = 0;
+    int b = 0;
+    moves = 0;
+    current_level = 0;
+    load_level(current_level);
+    update_screen();
+
+    while(1) {
+        b = button_get(false);
+
+        if ( b & BUTTON_OFF ) {
+            /* get out of here */
+            return; 
+        }
+
+
+        if ( b & BUTTON_F1 ) {
+            /* get out of here */
+            boxes_to_go=0; 
+        }
+
+        if ( b & BUTTON_LEFT ) {
+            /* if it is a blank spot */
+            if (board[row][col-1]==1) {
+                 board[row][col-1]=5;
+                 board[row][col]=current_spot;
+                 current_spot=1;
+                 col--;
+                 moves++;
+            }
+            /* if it is a home spot */
+            else if (board[row][col-1]==3) {
+                 board[row][col-1]=5;
+                 board[row][col]=current_spot;
+                 current_spot=3;
+                 col--;
+                 moves++;
+            }
+            else if (board[row][col-1]==4) {
+                 /* if there is a wall then do not move the box */
+                 if(board[row][col-2]==2) {
+                     /* do nothing */
+                 }
+                 /* if we are going from blank to blank */
+                 else if(board[row][col-2]==1) {
+                     board[row][col-2]=board[row][col-1];
+                     board[row][col-1]=board[row][col];
+                     board[row][col]=current_spot;
+                     current_spot=1;
+                     col--;
+                     moves++;
+                 }
+                 /* if we are going from a blank to home */
+                 else if(board[row][col-2]==3) {
+                     board[row][col-2]=7;
+                     board[row][col-1]=board[row][col];
+                     board[row][col]=current_spot; 
+                     current_spot=1;
+                     col--; 
+                     boxes_to_go--;
+                     moves++;    
+                 }        
+            }
+            else if (board[row][col-1]==7) {
+                 /* if there is a wall then do not move the box */
+                 if(board[row][col-2]==2) {
+                     /* do nothing */
+                 }
+                 /* we are going from a home to a blank */
+                 else if(board[row][col-2]==1) {
+                     board[row][col-2]=4;
+                     board[row][col-1]=board[row][col];
+                     board[row][col]=current_spot;
+                     current_spot=3;
+                     col--;
+                     boxes_to_go++;
+                     moves++;
+                 }
+                 /* if we are going from a home to home */
+                 else if(board[row][col-2]==3) {
+                     board[row][col-2]=7;
+                     board[row][col-1]=board[row][col];
+                     board[row][col]=current_spot; 
+                     current_spot=3;
+                     col--;
+                     moves++;      
+                 }
+            }
+            lcd_clear_display();
+            update_screen();          
+        }
+
+
+        if ( b & BUTTON_RIGHT ) {
+            /* if it is a blank spot */
+            if (board[row][col+1]==1) {
+                 board[row][col+1]=5;
+                 board[row][col]=current_spot;
+                 current_spot=1;
+                 col++;
+                 moves++;
+            }
+            /* if it is a home spot */
+            else if (board[row][col+1]==3) {
+                 board[row][col+1]=5;
+                 board[row][col]=current_spot;
+                 current_spot=3;
+                 col++;
+                 moves++;
+            }
+            else if (board[row][col+1]==4) {
+                 /* if there is a wall then do not move the box */
+                 if(board[row][col+2]==2) {
+                     /* do nothing */
+                 }
+                 /* if we are going from blank to blank */
+                 else if(board[row][col+2]==1) {
+                     board[row][col+2]=board[row][col+1];
+                     board[row][col+1]=board[row][col];
+                     board[row][col]=current_spot;
+                     current_spot=1;
+                     col++;
+                     moves++;
+                 }
+                 /* if we are going from a blank to home */
+                 else if(board[row][col+2]==3) {
+                     board[row][col+2]=7;
+                     board[row][col+1]=board[row][col];
+                     board[row][col]=current_spot; 
+                     current_spot=1;
+                     col++; 
+                     boxes_to_go--;
+                     moves++;    
+                 }        
+            }
+            else if (board[row][col+1]==7) {
+                 /* if there is a wall then do not move the box */
+                 if(board[row][col+2]==2) {
+                     /* do nothing */
+                 }
+                 /* we are going from a home to a blank */
+                 else if(board[row][col+2]==1) {
+                     board[row][col+2]=4;
+                     board[row][col+1]=board[row][col];
+                     board[row][col]=current_spot;
+                     current_spot=3;
+                     col++;
+                     boxes_to_go++;
+                     moves++;
+                 }
+                 /* if we are going from a home to home */
+                 else if(board[row][col+2]==3) {
+                     board[row][col+2]=7;
+                     board[row][col+1]=board[row][col];
+                     board[row][col]=current_spot; 
+                     current_spot=3;
+                     col++;
+                     moves++;      
+                 }
+            }
+            lcd_clear_display();
+            update_screen();          
+        }
+
+        if ( b & BUTTON_UP ) {
+            /* if it is a blank spot */
+            if (board[row-1][col]==1) {
+                 board[row-1][col]=5;
+                 board[row][col]=current_spot;
+                 current_spot=1;
+                 row--;
+                 moves++;
+            }
+            /* if it is a home spot */
+            else if (board[row-1][col]==3) {
+                 board[row-1][col]=5;
+                 board[row][col]=current_spot;
+                 current_spot=3;
+                 row--;
+                 moves++;
+            }
+            else if (board[row-1][col]==4) {
+                 /* if there is a wall then do not move the box */
+                 if(board[row-2][col]==2) {
+                     /* do nothing */
+                 }
+                 /* if we are going from blank to blank */
+                 else if(board[row-2][col]==1) {
+                     board[row-2][col]=board[row-1][col];
+                     board[row-1][col]=board[row][col];
+                     board[row][col]=current_spot;
+                     current_spot=1;
+                     row--;
+                     moves++;
+                 }
+                 /* if we are going from a blank to home */
+                 else if(board[row-2][col]==3) {
+                     board[row-2][col]=7;
+                     board[row-1][col]=board[row][col];
+                     board[row][col]=current_spot; 
+                     current_spot=1;
+                     row--; 
+                     boxes_to_go--;
+                     moves++;    
+                 }        
+            }
+            else if (board[row-1][col]==7) {
+                 /* if there is a wall then do not move the box */
+                 if(board[row-2][col]==2) {
+                     /* do nothing */
+                 }
+                 /* we are going from a home to a blank */
+                 else if(board[row-2][col]==1) {
+                     board[row-2][col]=4;
+                     board[row-1][col]=board[row][col];
+                     board[row][col]=current_spot;
+                     current_spot=3;
+                     row--;
+                     boxes_to_go++;
+                     moves++;
+                 }
+                 /* if we are going from a home to home */
+                 else if(board[row-2][col]==3) {
+                     board[row-2][col]=7;
+                     board[row-1][col]=board[row][col];
+                     board[row][col]=current_spot; 
+                     current_spot=3;
+                     row--;
+                     moves++;      
+                 }
+            }
+            lcd_clear_display();
+            update_screen();          
+        }
+
+        if ( b & BUTTON_DOWN ) {
+            /* if it is a blank spot */
+            if (board[row+1][col]==1) {
+                 board[row+1][col]=5;
+                 board[row][col]=current_spot;
+                 current_spot=1;
+                 row++;
+                 moves++;
+            }
+            /* if it is a home spot */
+            else if (board[row+1][col]==3) {
+                 board[row+1][col]=5;
+                 board[row][col]=current_spot;
+                 current_spot=3;
+                 row++;
+                 moves++;
+            }
+            else if (board[row+1][col]==4) {
+                 /* if there is a wall then do not move the box */
+                 if(board[row+2][col]==2) {
+                     /* do nothing */
+                 }
+                 /* if we are going from blank to blank */
+                 else if(board[row+2][col]==1) {
+                     board[row+2][col]=board[row+1][col];
+                     board[row+1][col]=board[row][col];
+                     board[row][col]=current_spot;
+                     current_spot=1;
+                     row++;
+                     moves++;
+                 }
+                 /* if we are going from a blank to home */
+                 else if(board[row+2][col]==3) {
+                     board[row+2][col]=7;
+                     board[row+1][col]=board[row][col];
+                     board[row][col]=current_spot; 
+                     current_spot=1;
+                     row++; 
+                     boxes_to_go--;
+                     moves++;    
+                 }        
+            }
+            else if (board[row+1][col]==7) {
+                 /* if there is a wall then do not move the box */
+                 if(board[row+2][col]==2) {
+                     /* do nothing */
+                 }
+                 /* we are going from a home to a blank */
+                 else if(board[row+2][col]==1) {
+                     board[row+2][col]=4;
+                     board[row+1][col]=board[row][col];
+                     board[row][col]=current_spot;
+                     current_spot=3;
+                     row++;
+                     boxes_to_go++;
+                     moves++;
+                 }
+                 /* if we are going from a home to home */
+                 else if(board[row+2][col]==3) {
+                     board[row+2][col]=7;
+                     board[row+1][col]=board[row][col];
+                     board[row][col]=current_spot; 
+                     current_spot=3;
+                     row++;
+                     moves++;      
+                 }
+            }
+            lcd_clear_display();
+            update_screen();          
+        }
+
+        if (boxes_to_go==0) {
+            moves=0;
+            current_level++;
+            if (current_level == NUM_LEVELS) {
+                lcd_clear_display();
+                lcd_putsxy(10, 20, "YOU WIN!!", 2);
+
+                lcd_update();
+                for (ii=0 ; ii<20 ; ii++) {
+                    lcd_invertrect(0,0,111,63);
+                    lcd_update();
+                }
+                return;
+            }
+            load_level(current_level);
+            lcd_clear_display();
+            update_screen();
+        }
+    }
+}
+
+
+void sokoban(void)
+{
+    int w, h;
+    int len = strlen(SOKOBAN_TITLE);
+
+    lcd_getfontsize(SOKOBAN_TITLE_FONT, &w, &h);
+
+    /* Get horizontel centering for text */
+    len *= w;
+    if (len%2 != 0)
+        len = ((len+1)/2)+(w/2);
+    else
+        len /= 2;
+
+    if (h%2 != 0)
+        h = (h/2)+1;
+    else
+        h /= 2;
+
+    lcd_clear_display();
+    lcd_putsxy(LCD_WIDTH/2-len, (LCD_HEIGHT/2)-h, SOKOBAN_TITLE, 
+               SOKOBAN_TITLE_FONT);
+    lcd_putsxy( 3,42,  "[Off] to stop", 0);
+    lcd_putsxy( 3,52, "[F1] + level",0);
+
+    lcd_update();
+    sleep(HZ*2);
+    lcd_clear_display();
+    sokoban_loop();
+}
+
+#endif
diff --git a/apps/recorder/sokoban.h b/apps/recorder/sokoban.h
new file mode 100644
index 0000000..8e6c54c
--- /dev/null
+++ b/apps/recorder/sokoban.h
@@ -0,0 +1,29 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2002 Robert E. Hak
+ *
+ * All files in this archive are subject to the GNU General Public License.
+ * See the file COPYING in the source tree root for full license agreement.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+#ifndef __SOKOBAN__
+#define __SOKOBAN__
+
+void load_level(int);
+void update_screen(void);
+void sokoban_loop(void);
+void sokoban(void);
+
+#endif /*__SOKOBAN__ */
+