| version 1.5 | | version 1.6 |
|---|
| | |
| /* | | /* |
| * static char *rcsid_map_c = | | * static char *rcsid_map_c = |
| * "$Id: square_spiral.c,v 1.5 2001/10/07 06:45:40 mwedel Exp $"; | | * "$Id: square_spiral.c,v 1.6 2002/09/06 04:44:46 mwedel Exp $"; |
| */ | | */ |
| | | |
| /* | | /* |
| | |
| maze[tx-1][ty]='D';/* make a doorway out of this layer */ | | maze[tx-1][ty]='D';/* make a doorway out of this layer */ |
| | | |
| /* walk left until we find the top-left corner */ | | /* walk left until we find the top-left corner */ |
| while(maze[tx-1][ty]) tx--; | | while((tx>0) && maze[tx-1][ty]) tx--; |
| | | |
| make_wall(maze,tx-1,ty,0); /* make a horizontal wall with a door */ | | make_wall(maze,tx-1,ty,0); /* make a horizontal wall with a door */ |
| | | |
| /* walk down until we find the bottom-left corner */ | | /* walk down until we find the bottom-left corner */ |
| while(maze[tx][ty+1]) ty++; | | while(((ty+1) < ysize) && maze[tx][ty+1] ) ty++; |
| | | |
| make_wall(maze,tx,ty+1,1); /* make a vertical wall with a door */ | | make_wall(maze,tx,ty+1,1); /* make a vertical wall with a door */ |
| | | |
| /* walk rightuntil we find the bottom-right corner */ | | /* walk rightuntil we find the bottom-right corner */ |
| while(maze[tx+1][ty]) tx++; | | while(((tx + 1) < xsize) && maze[tx+1][ty]) tx++; |
| | | |
| make_wall(maze,tx+1,ty,0); /* make a horizontal wall with a door */ | | make_wall(maze,tx+1,ty,0); /* make a horizontal wall with a door */ |
| tx++; /* set up for next layer. */ | | tx++; /* set up for next layer. */ |