| … | |
… | |
| 14 | int ax, ay, zx, zy; /* coordinates of extrema of the rectangle */ |
14 | int ax, ay, zx, zy; /* coordinates of extrema of the rectangle */ |
| 15 | |
15 | |
| 16 | int rtype; /* circle or rectangular */ |
16 | int rtype; /* circle or rectangular */ |
| 17 | } Room; |
17 | } Room; |
| 18 | |
18 | |
| 19 | static int roguelike_place_room (Room * Rooms, int xsize, int ysize, int nrooms); |
19 | static int roguelike_place_room (Room *rooms, int xsize, int ysize, int nrooms); |
| 20 | static void roguelike_make_rooms (Room * Rooms, char **maze, int options); |
20 | static void roguelike_make_rooms (Room *rooms, char **maze, int options); |
| 21 | static void roguelike_link_rooms (Room * Rooms, char **maze, int xsize, int ysize); |
21 | static void roguelike_link_rooms (Room *rooms, char **maze, int xsize, int ysize); |
| 22 | |
|
|
| 23 | |
22 | |
| 24 | int |
23 | int |
| 25 | surround_check (char **layout, int i, int j, int Xsize, int Ysize) |
24 | surround_check (char **layout, int i, int j, int Xsize, int Ysize) |
| 26 | { |
25 | { |
| 27 | /* 1 = wall to left, |
26 | /* 1 = wall to left, |
| … | |
… | |
| 39 | if ((j < Ysize - 1) && (layout[i][j + 1] != 0 && layout[i][j + 1] != '.')) |
38 | if ((j < Ysize - 1) && (layout[i][j + 1] != 0 && layout[i][j + 1] != '.')) |
| 40 | surround_index += 8; |
39 | surround_index += 8; |
| 41 | return surround_index; |
40 | return surround_index; |
| 42 | } |
41 | } |
| 43 | |
42 | |
| 44 | |
|
|
| 45 | /* actually make the layout: we work by a reduction process: |
43 | /* actually make the layout: we work by a reduction process: |
| 46 | * first we make everything a wall, then we remove areas to make rooms |
44 | * first we make everything a wall, then we remove areas to make rooms |
| 47 | */ |
45 | */ |
| 48 | |
46 | Maze |
| 49 | char ** |
|
|
| 50 | roguelike_layout_gen (int xsize, int ysize, int options) |
47 | roguelike_layout_gen (int xsize, int ysize, int options) |
| 51 | { |
48 | { |
| 52 | int i, j; |
49 | int i, j; |
| 53 | Room *Rooms = 0; |
|
|
| 54 | Room *walk; |
50 | Room *walk; |
| 55 | int nrooms = 0; |
51 | int nrooms = 0; |
| 56 | int tries = 0; |
52 | int tries = 0; |
| 57 | |
53 | |
| 58 | /* allocate that array, write walls everywhere up */ |
54 | Maze maze (xsize, ysize); |
| 59 | char **maze = (char **) malloc (sizeof (char *) * xsize); |
|
|
| 60 | |
55 | |
| 61 | for (i = 0; i < xsize; i++) |
56 | for (i = 0; i < xsize; i++) |
| 62 | { |
|
|
| 63 | maze[i] = (char *) malloc (sizeof (char) * ysize); |
|
|
| 64 | for (j = 0; j < ysize; j++) |
57 | for (j = 0; j < ysize; j++) |
| 65 | maze[i][j] = '#'; |
58 | maze[i][j] = '#'; |
| 66 | } |
|
|
| 67 | |
59 | |
| 68 | /* minimum room size is basically 5x5: if xsize/ysize is |
60 | /* minimum room size is basically 5x5: if xsize/ysize is |
| 69 | less than 3x that then hollow things out, stick in |
61 | less than 3x that then hollow things out, stick in |
| 70 | a stairsup and stairs down, and exit */ |
62 | a stairsup and stairs down, and exit */ |
| 71 | |
63 | |
| 72 | if (xsize < 11 || ysize < 11) |
64 | if (xsize < 11 || ysize < 11) |
| 73 | { |
65 | { |
| 74 | for (i = 1; i < xsize - 1; i++) |
66 | for (i = 1; i < xsize - 1; i++) |
| 75 | for (j = 1; j < ysize - 1; j++) |
67 | for (j = 1; j < ysize - 1; j++) |
| 76 | maze[i][j] = 0; |
68 | maze[i][j] = 0; |
|
|
69 | |
| 77 | maze[(xsize - 1) / 2][(ysize - 1) / 2] = '>'; |
70 | maze[(xsize - 1) / 2][(ysize - 1) / 2 ] = '>'; |
| 78 | maze[(xsize - 1) / 2][(ysize - 1) / 2 + 1] = '<'; |
71 | maze[(xsize - 1) / 2][(ysize - 1) / 2 + 1] = '<'; |
|
|
72 | |
| 79 | return maze; |
73 | return maze; |
| 80 | } |
74 | } |
| 81 | |
75 | |
| 82 | /* decide on the number of rooms */ |
76 | /* decide on the number of rooms */ |
| 83 | nrooms = RANDOM () % 10 + 6; |
77 | nrooms = rndm (10) + 6; |
| 84 | Rooms = (Room *) calloc (nrooms + 1, sizeof (Room)); |
78 | Room *rooms = salloc0<Room> (nrooms + 1); |
| 85 | |
79 | |
| 86 | /* actually place the rooms */ |
80 | /* actually place the rooms */ |
| 87 | i = 0; |
81 | i = 0; |
| 88 | while (tries < 450 && i < nrooms) |
82 | while (tries < 450 && i < nrooms) |
| 89 | { |
83 | { |
| 90 | /* try to place the room */ |
84 | /* try to place the room */ |
| 91 | if (!roguelike_place_room (Rooms, xsize, ysize, nrooms)) |
85 | if (!roguelike_place_room (rooms, xsize, ysize, nrooms)) |
| 92 | tries++; |
86 | tries++; |
| 93 | else |
87 | else |
| 94 | i++; |
88 | i++; |
| 95 | } |
89 | } |
| 96 | |
90 | |
| 97 | if (i == 0) |
91 | if (i == 0) |
| 98 | { /* no can do! */ |
92 | { /* no can do! */ |
| 99 | for (i = 1; i < xsize - 1; i++) |
93 | for (i = 1; i < xsize - 1; i++) |
| 100 | for (j = 1; j < ysize - 1; j++) |
94 | for (j = 1; j < ysize - 1; j++) |
| 101 | maze[i][j] = 0; |
95 | maze[i][j] = 0; |
|
|
96 | |
| 102 | maze[(xsize - 1) / 2][(ysize - 1) / 2] = '>'; |
97 | maze [(xsize - 1) / 2][(ysize - 1) / 2 ] = '>'; |
| 103 | maze[(xsize - 1) / 2][(ysize - 1) / 2 + 1] = '<'; |
98 | maze [(xsize - 1) / 2][(ysize - 1) / 2 + 1] = '<'; |
| 104 | free (Rooms); |
99 | |
|
|
100 | sfree (rooms, nrooms + 1); |
| 105 | return maze; |
101 | return maze; |
| 106 | } |
102 | } |
| 107 | |
103 | |
| 108 | |
104 | |
| 109 | /* erase the areas occupied by the rooms */ |
105 | /* erase the areas occupied by the rooms */ |
| 110 | roguelike_make_rooms (Rooms, maze, options); |
106 | roguelike_make_rooms (rooms, maze, options); |
| 111 | |
107 | |
| 112 | roguelike_link_rooms (Rooms, maze, xsize, ysize); |
108 | roguelike_link_rooms (rooms, maze, xsize, ysize); |
| 113 | |
109 | |
| 114 | /* put in the stairs */ |
110 | /* put in the stairs */ |
| 115 | |
111 | |
| 116 | maze[Rooms->x][Rooms->y] = '<'; |
112 | maze[rooms->x][rooms->y] = '<'; |
|
|
113 | |
| 117 | /* get the last one */ |
114 | /* get the last one */ |
| 118 | for (walk = Rooms; walk->x != 0; walk++); |
115 | for (walk = rooms; walk->x != 0; walk++) |
|
|
116 | ; |
|
|
117 | |
| 119 | /* back up one */ |
118 | /* back up one */ |
| 120 | walk--; |
119 | walk--; |
|
|
120 | |
| 121 | if (walk == Rooms) |
121 | if (walk == rooms) |
| 122 | { |
122 | { |
| 123 | /* In this case, there is only a single room. We don't want to |
123 | /* In this case, there is only a single room. We don't want to |
| 124 | * clobber are up exit (above) with a down exit, so put the |
124 | * clobber are up exit (above) with a down exit, so put the |
| 125 | * other exit one space up/down, depending which is a space |
125 | * other exit one space up/down, depending which is a space |
| 126 | * and not a wall. |
126 | * and not a wall. |
| … | |
… | |
| 137 | for (i = 0; i < xsize; i++) |
137 | for (i = 0; i < xsize; i++) |
| 138 | for (j = 0; j < ysize; j++) |
138 | for (j = 0; j < ysize; j++) |
| 139 | { |
139 | { |
| 140 | if (maze[i][j] == '.') |
140 | if (maze[i][j] == '.') |
| 141 | maze[i][j] = 0; |
141 | maze[i][j] = 0; |
|
|
142 | |
| 142 | if (maze[i][j] == 'D') |
143 | if (maze[i][j] == 'D') |
| 143 | { /* remove bad door. */ |
144 | { /* remove bad door. */ |
| 144 | int si = surround_check (maze, i, j, xsize, ysize); |
145 | int si = surround_check (maze, i, j, xsize, ysize); |
| 145 | |
146 | |
| 146 | if (si != 3 && si != 12) |
147 | if (si != 3 && si != 12) |
| … | |
… | |
| 151 | j = 0; |
152 | j = 0; |
| 152 | } |
153 | } |
| 153 | } |
154 | } |
| 154 | } |
155 | } |
| 155 | |
156 | |
| 156 | free (Rooms); |
157 | sfree (rooms, nrooms + 1); |
| 157 | return maze; |
158 | return maze; |
| 158 | } |
159 | } |
| 159 | |
160 | |
| 160 | |
|
|
| 161 | |
|
|
| 162 | static int |
161 | static int |
| 163 | roguelike_place_room (Room * Rooms, int xsize, int ysize, int nrooms) |
162 | roguelike_place_room (Room *rooms, int xsize, int ysize, int nrooms) |
| 164 | { |
163 | { |
| 165 | |
|
|
| 166 | int tx, ty; /* trial center locations */ |
164 | int tx, ty; /* trial center locations */ |
| 167 | int sx, sy; /* trial sizes */ |
165 | int sx, sy; /* trial sizes */ |
| 168 | int ax, ay; /* min coords of rect */ |
166 | int ax, ay; /* min coords of rect */ |
| 169 | int zx, zy; /* max coords of rect */ |
167 | int zx, zy; /* max coords of rect */ |
| 170 | int x_basesize; |
168 | int x_basesize; |
| 171 | int y_basesize; |
169 | int y_basesize; |
| 172 | Room *walk; |
170 | Room *walk; |
| 173 | |
171 | |
| 174 | /* decide on the base x and y sizes */ |
172 | /* decide on the base x and y sizes */ |
| 175 | |
|
|
| 176 | x_basesize = xsize / isqrt (nrooms); |
173 | x_basesize = xsize / isqrt (nrooms); |
| 177 | y_basesize = ysize / isqrt (nrooms); |
174 | y_basesize = ysize / isqrt (nrooms); |
| 178 | |
175 | |
| 179 | |
176 | tx = rndm (xsize); |
| 180 | tx = RANDOM () % xsize; |
177 | ty = rndm (ysize); |
| 181 | ty = RANDOM () % ysize; |
|
|
| 182 | |
178 | |
| 183 | /* generate a distribution of sizes centered about basesize */ |
179 | /* generate a distribution of sizes centered about basesize */ |
| 184 | sx = (RANDOM () % x_basesize) + (RANDOM () % x_basesize) + (RANDOM () % x_basesize); |
180 | sx = rndm (x_basesize) + rndm (x_basesize) + rndm (x_basesize); |
| 185 | sy = (RANDOM () % y_basesize) + (RANDOM () % y_basesize) + (RANDOM () % y_basesize); |
181 | sy = rndm (y_basesize) + rndm (y_basesize) + rndm (y_basesize); |
| 186 | sy = (int) (sy * .5); /* renormalize */ |
182 | sy = (int) (sy * .5); /* renormalize */ |
| 187 | |
183 | |
| 188 | /* find the corners */ |
184 | /* find the corners */ |
| 189 | ax = tx - sx / 2; |
185 | ax = tx - sx / 2; |
| 190 | zx = tx + sx / 2 + sx % 2; |
186 | zx = tx + sx / 2 + sx % 2; |
| 191 | |
187 | |
| 192 | ay = ty - sy / 2; |
188 | ay = ty - sy / 2; |
| 193 | zy = ty + sy / 2 + sy % 2; |
189 | zy = ty + sy / 2 + sy % 2; |
| 194 | |
190 | |
| 195 | /* check to see if it's in the map */ |
191 | /* check to see if it's in the map */ |
| 196 | if (zx > xsize - 1 || ax < 1) |
192 | if (zx > xsize - 1 || ax < 1) return 0; |
| 197 | return 0; |
|
|
| 198 | if (zy > ysize - 1 || ay < 1) |
193 | if (zy > ysize - 1 || ay < 1) return 0; |
| 199 | return 0; |
|
|
| 200 | |
194 | |
| 201 | /* no small fish */ |
195 | /* no small fish */ |
| 202 | if (sx < 3 || sy < 3) |
196 | if (sx < 3 || sy < 3) |
| 203 | return 0; |
197 | return 0; |
| 204 | |
198 | |
| 205 | /* check overlap with existing rooms */ |
199 | /* check overlap with existing rooms */ |
| 206 | for (walk = Rooms; walk->x != 0; walk++) |
200 | for (walk = rooms; walk->x != 0; walk++) |
| 207 | { |
201 | { |
| 208 | int dx = abs (tx - walk->x); |
202 | int dx = abs (tx - walk->x); |
| 209 | int dy = abs (ty - walk->y); |
203 | int dy = abs (ty - walk->y); |
| 210 | |
204 | |
| 211 | if ((dx < (walk->sx + sx) / 2 + 2) && (dy < (walk->sy + sy) / 2 + 2)) |
205 | if ((dx < (walk->sx + sx) / 2 + 2) && (dy < (walk->sy + sy) / 2 + 2)) |
| … | |
… | |
| 213 | } |
207 | } |
| 214 | |
208 | |
| 215 | /* if we've got here, presumably the room is OK. */ |
209 | /* if we've got here, presumably the room is OK. */ |
| 216 | |
210 | |
| 217 | /* get a pointer to the first free room */ |
211 | /* get a pointer to the first free room */ |
| 218 | for (walk = Rooms; walk->x != 0; walk++); |
212 | for (walk = rooms; walk->x != 0; walk++) |
|
|
213 | ; |
|
|
214 | |
| 219 | walk->x = tx; |
215 | walk->x = tx; |
| 220 | walk->y = ty; |
216 | walk->y = ty; |
| 221 | walk->sx = sx; |
217 | walk->sx = sx; |
| 222 | walk->sy = sy; |
218 | walk->sy = sy; |
| 223 | walk->ax = ax; |
219 | walk->ax = ax; |
| 224 | walk->ay = ay; |
220 | walk->ay = ay; |
| 225 | walk->zx = zx; |
221 | walk->zx = zx; |
| 226 | walk->zy = zy; |
222 | walk->zy = zy; |
|
|
223 | |
| 227 | return 1; /* success */ |
224 | return 1; /* success */ |
| 228 | |
|
|
| 229 | } |
225 | } |
| 230 | |
|
|
| 231 | |
226 | |
| 232 | /* write all the rooms into the maze */ |
227 | /* write all the rooms into the maze */ |
| 233 | static void |
228 | static void |
| 234 | roguelike_make_rooms (Room * Rooms, char **maze, int options) |
229 | roguelike_make_rooms (Room *rooms, char **maze, int options) |
| 235 | { |
230 | { |
| 236 | int making_circle = 0; |
231 | int making_circle = 0; |
| 237 | int i, j; |
232 | int i, j; |
| 238 | int R; |
233 | int R; |
| 239 | Room *walk; |
234 | Room *walk; |
| 240 | |
235 | |
| 241 | for (walk = Rooms; walk->x != 0; walk++) |
236 | for (walk = rooms; walk->x != 0; walk++) |
| 242 | { |
237 | { |
| 243 | /* first decide what shape to make */ |
238 | /* first decide what shape to make */ |
| 244 | switch (options) |
239 | switch (options) |
| 245 | { |
240 | { |
| 246 | case 1: |
241 | case 1: |
| 247 | making_circle = 0; |
242 | making_circle = 0; |
| 248 | break; |
243 | break; |
| 249 | case 2: |
244 | case 2: |
| 250 | making_circle = 1; |
245 | making_circle = 1; |
| 251 | break; |
246 | break; |
| 252 | default: |
247 | default: |
| 253 | making_circle = ((RANDOM () % 3 == 0) ? 1 : 0); |
248 | making_circle = ((rndm (3) == 0) ? 1 : 0); |
| 254 | break; |
249 | break; |
| 255 | } |
250 | } |
| 256 | |
251 | |
| 257 | if (walk->sx < walk->sy) |
252 | if (walk->sx < walk->sy) |
| 258 | R = walk->sx / 2; |
253 | R = walk->sx / 2; |
| 259 | else |
254 | else |
| 260 | R = walk->sy / 2; |
255 | R = walk->sy / 2; |
| 261 | |
256 | |
| 262 | /* enscribe a rectangle */ |
257 | /* enscribe a rectangle */ |
| 263 | for (i = walk->ax; i < walk->zx; i++) |
258 | for (i = walk->ax; i < walk->zx; i++) |
| 264 | for (j = walk->ay; j < walk->zy; j++) |
259 | for (j = walk->ay; j < walk->zy; j++) |
| 265 | { |
|
|
| 266 | if (!making_circle || ((int) (0.5 + hypot (walk->x - i, walk->y - j))) <= R) |
260 | if (!making_circle || ((int) (0.5 + hypot (walk->x - i, walk->y - j))) <= R) |
| 267 | maze[i][j] = '.'; |
261 | maze[i][j] = '.'; |
| 268 | } |
|
|
| 269 | } |
262 | } |
| 270 | } |
263 | } |
| 271 | |
|
|
| 272 | |
|
|
| 273 | |
264 | |
| 274 | static void |
265 | static void |
| 275 | roguelike_link_rooms (Room * Rooms, char **maze, int xsize, int ysize) |
266 | roguelike_link_rooms (Room *rooms, char **maze, int xsize, int ysize) |
| 276 | { |
267 | { |
| 277 | Room *walk; |
268 | Room *walk; |
| 278 | int i, j; |
269 | int i, j; |
| 279 | |
270 | |
| 280 | /* link each room to the previous room */ |
271 | /* link each room to the previous room */ |
| 281 | if (Rooms[1].x == 0) |
272 | if (rooms[1].x == 0) |
| 282 | return; /* only 1 room */ |
273 | return; /* only 1 room */ |
| 283 | |
274 | |
| 284 | for (walk = Rooms + 1; walk->x != 0; walk++) |
275 | for (walk = rooms + 1; walk->x != 0; walk++) |
| 285 | { |
276 | { |
| 286 | int x1 = walk->x; |
277 | int x1 = walk->x; |
| 287 | int y1 = walk->y; |
278 | int y1 = walk->y; |
| 288 | int x2 = (walk - 1)->x; |
279 | int x2 = (walk - 1)->x; |
| 289 | int y2 = (walk - 1)->y; |
280 | int y2 = (walk - 1)->y; |
| 290 | int in_wall = 0; |
281 | int in_wall = 0; |
| 291 | |
282 | |
| 292 | if (RANDOM () % 2) |
283 | if (rndm (2)) |
| 293 | { /* connect in x direction first */ |
284 | { /* connect in x direction first */ |
| 294 | /* horizontal connect */ |
285 | /* horizontal connect */ |
| 295 | /* swap (x1,y1) (x2,y2) if necessary */ |
286 | /* swap (x1,y1) (x2,y2) if necessary */ |
| 296 | |
287 | |
| 297 | if (x2 < x1) |
288 | if (x2 < x1) |
| … | |
… | |
| 398 | |
389 | |
| 399 | } |
390 | } |
| 400 | |
391 | |
| 401 | } |
392 | } |
| 402 | } |
393 | } |
|
|
394 | |
