| … | |
… | |
| 32 | int wall_chance; |
32 | int wall_chance; |
| 33 | |
33 | |
| 34 | /* the outsize interface routine: accepts sizes, returns a char |
34 | /* the outsize interface routine: accepts sizes, returns a char |
| 35 | ** maze. option is a flag for either a sparse or a full maze. Sparse |
35 | ** maze. option is a flag for either a sparse or a full maze. Sparse |
| 36 | mazes have sizable rooms. option = 1, full, 0, sparse.*/ |
36 | mazes have sizable rooms. option = 1, full, 0, sparse.*/ |
| 37 | |
37 | void |
| 38 | Maze |
38 | maze_gen (Layout maze, int option) |
| 39 | maze_gen (int xsize, int ysize, int option) |
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| 40 | { |
39 | { |
| 41 | int i, j; |
40 | maze->clear (); |
| 42 | |
41 | maze->border (); |
| 43 | Maze maze (xsize, ysize); |
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| 44 | |
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| 45 | /* write the outer walls */ |
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| 46 | for (i = 0; i < xsize; i++) maze[i][0] = maze[i][ysize - 1] = '#'; |
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| 47 | for (j = 0; j < ysize; j++) maze[0][j] = maze[xsize - 1][j] = '#'; |
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| 48 | |
42 | |
| 49 | /* find how many free wall spots there are */ |
43 | /* find how many free wall spots there are */ |
| 50 | wall_free_size = 2 * (xsize - 4) + 2 * (ysize - 4); |
44 | wall_free_size = 2 * (maze->w - 4) + 2 * (maze->h - 4); |
| 51 | |
45 | |
| 52 | make_wall_free_list (xsize, ysize); |
46 | make_wall_free_list (maze->w, maze->h); |
| 53 | |
47 | |
| 54 | /* return the empty maze */ |
48 | /* return the empty maze */ |
| 55 | if (wall_free_size <= 0) |
49 | if (wall_free_size <= 0) |
| 56 | return maze; |
50 | return; |
| 57 | |
51 | |
| 58 | /* recursively generate the walls of the maze */ |
52 | /* recursively generate the walls of the maze */ |
| 59 | /* first pop a random starting point */ |
53 | /* first pop a random starting point */ |
| 60 | while (wall_free_size > 0) |
54 | while (wall_free_size > 0) |
| 61 | { |
55 | { |
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56 | int i, j; |
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57 | |
| 62 | pop_wall_point (&i, &j); |
58 | pop_wall_point (&i, &j); |
| 63 | |
59 | |
| 64 | if (option) |
60 | if (option) |
| 65 | fill_maze_full (maze, i, j, xsize, ysize); |
61 | fill_maze_full (maze, i, j, maze->w, maze->h); |
| 66 | else |
62 | else |
| 67 | fill_maze_sparse (maze, i, j, xsize, ysize); |
63 | fill_maze_sparse (maze, i, j, maze->w, maze->h); |
| 68 | } |
64 | } |
| 69 | |
65 | |
| 70 | /* clean up our intermediate data structures. */ |
66 | /* clean up our intermediate data structures. */ |
| 71 | |
67 | |
| 72 | free (wall_x_list); |
68 | free (wall_x_list); |
| 73 | free (wall_y_list); |
69 | free (wall_y_list); |
| 74 | |
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| 75 | return maze; |
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| 76 | } |
70 | } |
| 77 | |
71 | |
| 78 | /* the free wall points are those outer points which aren't corners or |
72 | /* the free wall points are those outer points which aren't corners or |
| 79 | near corners, and don't have a maze wall growing out of them already. */ |
73 | near corners, and don't have a maze wall growing out of them already. */ |
| 80 | void |
74 | void |
| … | |
… | |
| 115 | |
109 | |
| 116 | /* randomly returns one of the elements from the wall point list */ |
110 | /* randomly returns one of the elements from the wall point list */ |
| 117 | void |
111 | void |
| 118 | pop_wall_point (int *x, int *y) |
112 | pop_wall_point (int *x, int *y) |
| 119 | { |
113 | { |
| 120 | int index = rndm (wall_free_size); |
114 | int index = rmg_rndm (wall_free_size); |
| 121 | |
115 | |
| 122 | *x = wall_x_list[index]; |
116 | *x = wall_x_list[index]; |
| 123 | *y = wall_y_list[index]; |
117 | *y = wall_y_list[index]; |
| 124 | /* write the last array point here */ |
118 | /* write the last array point here */ |
| 125 | wall_x_list[index] = wall_x_list[wall_free_size - 1]; |
119 | wall_x_list[index] = wall_x_list[wall_free_size - 1]; |
| … | |
… | |
| 150 | dirlist[count] = 1; |
144 | dirlist[count] = 1; |
| 151 | count++; |
145 | count++; |
| 152 | } |
146 | } |
| 153 | } |
147 | } |
| 154 | |
148 | |
| 155 | |
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| 156 | /* look down */ |
149 | /* look down */ |
| 157 | if (yc > 2 && xc > 2 && xc < xsize - 2) /* it is valid to look down */ |
150 | if (yc > 2 && xc > 2 && xc < xsize - 2) /* it is valid to look down */ |
| 158 | { |
151 | { |
| 159 | int cleartest = (int) maze[xc][yc - 1] + (int) maze[xc - 1][yc - 1] + (int) maze[xc + 1][yc - 1]; |
152 | int cleartest = (int) maze[xc][yc - 1] + (int) maze[xc - 1][yc - 1] + (int) maze[xc + 1][yc - 1]; |
| 160 | |
153 | |
| … | |
… | |
| 165 | dirlist[count] = 2; |
158 | dirlist[count] = 2; |
| 166 | count++; |
159 | count++; |
| 167 | } |
160 | } |
| 168 | } |
161 | } |
| 169 | |
162 | |
| 170 | |
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| 171 | /* look right */ |
163 | /* look right */ |
| 172 | if (xc < xsize - 2 && yc > 2 && yc < ysize - 2) /* it is valid to look left */ |
164 | if (xc < xsize - 2 && yc > 2 && yc < ysize - 2) /* it is valid to look left */ |
| 173 | { |
165 | { |
| 174 | int cleartest = (int) maze[xc + 1][yc] + (int) maze[xc + 1][yc - 1] + (int) maze[xc + 1][yc + 1]; |
166 | int cleartest = (int) maze[xc + 1][yc] + (int) maze[xc + 1][yc - 1] + (int) maze[xc + 1][yc + 1]; |
| 175 | |
167 | |
| … | |
… | |
| 180 | dirlist[count] = 3; |
172 | dirlist[count] = 3; |
| 181 | count++; |
173 | count++; |
| 182 | } |
174 | } |
| 183 | } |
175 | } |
| 184 | |
176 | |
| 185 | |
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| 186 | /* look left */ |
177 | /* look left */ |
| 187 | if (xc > 2 && yc > 2 && yc < ysize - 2) /* it is valid to look down */ |
178 | if (xc > 2 && yc > 2 && yc < ysize - 2) /* it is valid to look down */ |
| 188 | { |
179 | { |
| 189 | int cleartest = (int) maze[xc - 1][yc] + (int) maze[xc - 1][yc - 1] + (int) maze[xc - 1][yc + 1]; |
180 | int cleartest = (int) maze[xc - 1][yc] + (int) maze[xc - 1][yc - 1] + (int) maze[xc - 1][yc + 1]; |
| 190 | |
181 | |
| … | |
… | |
| 200 | if (count == 0) |
191 | if (count == 0) |
| 201 | return -1; /* failed to find any clear points */ |
192 | return -1; /* failed to find any clear points */ |
| 202 | |
193 | |
| 203 | /* choose a random direction */ |
194 | /* choose a random direction */ |
| 204 | if (count > 1) |
195 | if (count > 1) |
| 205 | count = rndm (count); |
196 | count = rmg_rndm (count); |
| 206 | else |
197 | else |
| 207 | count = 0; |
198 | count = 0; |
| 208 | |
199 | |
| 209 | switch (dirlist[count]) |
200 | switch (dirlist[count]) |
| 210 | { |
201 | { |
| … | |
… | |
| 239 | return 1; |
230 | return 1; |
| 240 | } |
231 | } |
| 241 | |
232 | |
| 242 | /* recursive routine which will fill every available space in the maze |
233 | /* recursive routine which will fill every available space in the maze |
| 243 | with walls*/ |
234 | with walls*/ |
| 244 | |
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| 245 | void |
235 | void |
| 246 | fill_maze_full (char **maze, int x, int y, int xsize, int ysize) |
236 | fill_maze_full (char **maze, int x, int y, int xsize, int ysize) |
| 247 | { |
237 | { |
| 248 | int xc, yc; |
238 | int xc, yc; |
| 249 | |
239 | |
| 250 | /* write a wall here */ |
240 | /* write a wall here */ |
| 251 | maze[x][y] = '#'; |
241 | maze[x][y] = '#'; |
| 252 | |
242 | |
| 253 | /* decide if we're going to pick from the wall_free_list */ |
243 | /* decide if we're going to pick from the wall_free_list */ |
| 254 | if (rndm (4) && wall_free_size > 0) |
244 | if (rmg_rndm (4) && wall_free_size > 0) |
| 255 | { |
245 | { |
| 256 | pop_wall_point (&xc, &yc); |
246 | pop_wall_point (&xc, &yc); |
| 257 | fill_maze_full (maze, xc, yc, xsize, ysize); |
247 | fill_maze_full (maze, xc, yc, xsize, ysize); |
| 258 | } |
248 | } |
| 259 | |
249 | |
| … | |
… | |
| 273 | |
263 | |
| 274 | /* write a wall here */ |
264 | /* write a wall here */ |
| 275 | maze[x][y] = '#'; |
265 | maze[x][y] = '#'; |
| 276 | |
266 | |
| 277 | /* decide if we're going to pick from the wall_free_list */ |
267 | /* decide if we're going to pick from the wall_free_list */ |
| 278 | if (rndm (4) && wall_free_size > 0) |
268 | if (rmg_rndm (4) && wall_free_size > 0) |
| 279 | { |
269 | { |
| 280 | pop_wall_point (&xc, &yc); |
270 | pop_wall_point (&xc, &yc); |
| 281 | fill_maze_sparse (maze, xc, yc, xsize, ysize); |
271 | fill_maze_sparse (maze, xc, yc, xsize, ysize); |
| 282 | } |
272 | } |
| 283 | |
273 | |
