| … | |
… | |
| 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, |
| … | |
… | |
| 30 | 8 = wall below */ |
29 | 8 = wall below */ |
| 31 | int surround_index = 0; |
30 | int surround_index = 0; |
| 32 | |
31 | |
| 33 | if ((i > 0) && (layout[i - 1][j] != 0 && layout[i - 1][j] != '.')) |
32 | if ((i > 0) && (layout[i - 1][j] != 0 && layout[i - 1][j] != '.')) |
| 34 | surround_index += 1; |
33 | surround_index += 1; |
|
|
34 | |
| 35 | if ((i < Xsize - 1) && (layout[i + 1][j] != 0 && layout[i + 1][j] != '.')) |
35 | if ((i < Xsize - 1) && (layout[i + 1][j] != 0 && layout[i + 1][j] != '.')) |
| 36 | surround_index += 2; |
36 | surround_index += 2; |
|
|
37 | |
| 37 | if ((j > 0) && (layout[i][j - 1] != 0 && layout[i][j - 1] != '.')) |
38 | if ((j > 0) && (layout[i][j - 1] != 0 && layout[i][j - 1] != '.')) |
| 38 | surround_index += 4; |
39 | surround_index += 4; |
|
|
40 | |
| 39 | if ((j < Ysize - 1) && (layout[i][j + 1] != 0 && layout[i][j + 1] != '.')) |
41 | if ((j < Ysize - 1) && (layout[i][j + 1] != 0 && layout[i][j + 1] != '.')) |
| 40 | surround_index += 8; |
42 | surround_index += 8; |
|
|
43 | |
| 41 | return surround_index; |
44 | return surround_index; |
| 42 | } |
45 | } |
| 43 | |
|
|
| 44 | |
46 | |
| 45 | /* actually make the layout: we work by a reduction process: |
47 | /* actually make the layout: we work by a reduction process: |
| 46 | * first we make everything a wall, then we remove areas to make rooms |
48 | * first we make everything a wall, then we remove areas to make rooms |
| 47 | */ |
49 | */ |
| 48 | |
50 | void |
| 49 | char ** |
51 | roguelike_layout_gen (Layout maze, int options) |
| 50 | roguelike_layout_gen (int xsize, int ysize, int options) |
|
|
| 51 | { |
52 | { |
| 52 | int i, j; |
53 | int i, j; |
| 53 | Room *Rooms = 0; |
|
|
| 54 | Room *walk; |
54 | Room *walk; |
| 55 | int nrooms = 0; |
55 | int nrooms = 0; |
| 56 | int tries = 0; |
56 | int tries = 0; |
| 57 | |
57 | |
| 58 | /* allocate that array, write walls everywhere up */ |
58 | int xsize = maze->w; |
| 59 | char **maze = (char **) malloc (sizeof (char *) * xsize); |
59 | int ysize = maze->h; |
| 60 | |
|
|
| 61 | for (i = 0; i < xsize; i++) |
|
|
| 62 | { |
|
|
| 63 | maze[i] = (char *) malloc (sizeof (char) * ysize); |
|
|
| 64 | for (j = 0; j < ysize; j++) |
|
|
| 65 | maze[i][j] = '#'; |
|
|
| 66 | } |
|
|
| 67 | |
60 | |
| 68 | /* minimum room size is basically 5x5: if xsize/ysize is |
61 | /* minimum room size is basically 5x5: if xsize/ysize is |
| 69 | less than 3x that then hollow things out, stick in |
62 | less than 3x that then hollow things out, stick in |
| 70 | a stairsup and stairs down, and exit */ |
63 | a stairsup and stairs down, and exit */ |
| 71 | |
|
|
| 72 | if (xsize < 11 || ysize < 11) |
64 | if (xsize < 11 || ysize < 11) |
| 73 | { |
65 | { |
| 74 | for (i = 1; i < xsize - 1; i++) |
66 | maze->clear (); |
| 75 | for (j = 1; j < ysize - 1; j++) |
67 | maze->border (); |
| 76 | maze[i][j] = 0; |
68 | |
| 77 | maze[(xsize - 1) / 2][(ysize - 1) / 2] = '>'; |
69 | maze[(xsize - 1) / 2][(ysize - 1) / 2 ] = '>'; |
| 78 | maze[(xsize - 1) / 2][(ysize - 1) / 2 + 1] = '<'; |
70 | maze[(xsize - 1) / 2][(ysize - 1) / 2 + 1] = '<'; |
|
|
71 | |
| 79 | return maze; |
72 | return; |
| 80 | } |
73 | } |
|
|
74 | |
|
|
75 | maze->clear ('#'); |
| 81 | |
76 | |
| 82 | /* decide on the number of rooms */ |
77 | /* decide on the number of rooms */ |
| 83 | nrooms = RANDOM () % 10 + 6; |
78 | nrooms = rndm (10) + 6; |
| 84 | Rooms = (Room *) calloc (nrooms + 1, sizeof (Room)); |
79 | Room *rooms = salloc0<Room> (nrooms + 1); |
| 85 | |
80 | |
| 86 | /* actually place the rooms */ |
81 | /* actually place the rooms */ |
| 87 | i = 0; |
82 | i = 0; |
| 88 | while (tries < 450 && i < nrooms) |
83 | while (tries < 450 && i < nrooms) |
| 89 | { |
84 | { |
| 90 | /* try to place the room */ |
85 | /* try to place the room */ |
| 91 | if (!roguelike_place_room (Rooms, xsize, ysize, nrooms)) |
86 | if (!roguelike_place_room (rooms, xsize, ysize, nrooms)) |
| 92 | tries++; |
87 | tries++; |
| 93 | else |
88 | else |
| 94 | i++; |
89 | i++; |
| 95 | } |
90 | } |
| 96 | |
91 | |
| 97 | if (i == 0) |
92 | if (i == 0) /* no can do! */ |
| 98 | { /* no can do! */ |
93 | { |
| 99 | for (i = 1; i < xsize - 1; i++) |
94 | maze->clear (); |
| 100 | for (j = 1; j < ysize - 1; j++) |
95 | maze->border (); |
| 101 | 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; |
| 106 | } |
102 | } |
| 107 | |
|
|
| 108 | |
103 | |
| 109 | /* erase the areas occupied by the rooms */ |
104 | /* erase the areas occupied by the rooms */ |
| 110 | roguelike_make_rooms (Rooms, maze, options); |
105 | roguelike_make_rooms (rooms, maze, options); |
| 111 | |
106 | |
| 112 | roguelike_link_rooms (Rooms, maze, xsize, ysize); |
107 | roguelike_link_rooms (rooms, maze, xsize, ysize); |
| 113 | |
108 | |
| 114 | /* put in the stairs */ |
109 | /* put in the stairs */ |
| 115 | |
110 | |
| 116 | maze[Rooms->x][Rooms->y] = '<'; |
111 | maze[rooms->x][rooms->y] = '<'; |
|
|
112 | |
| 117 | /* get the last one */ |
113 | /* get the last one */ |
| 118 | for (walk = Rooms; walk->x != 0; walk++); |
114 | for (walk = rooms; walk->x != 0; walk++) |
|
|
115 | ; |
|
|
116 | |
| 119 | /* back up one */ |
117 | /* back up one */ |
| 120 | walk--; |
118 | walk--; |
|
|
119 | |
| 121 | if (walk == Rooms) |
120 | if (walk == rooms) |
| 122 | { |
121 | { |
| 123 | /* In this case, there is only a single room. We don't want to |
122 | /* 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 |
123 | * clobber are up exit (above) with a down exit, so put the |
| 125 | * other exit one space up/down, depending which is a space |
124 | * other exit one space up/down, depending which is a space |
| 126 | * and not a wall. |
125 | * and not a wall. |
| … | |
… | |
| 137 | for (i = 0; i < xsize; i++) |
136 | for (i = 0; i < xsize; i++) |
| 138 | for (j = 0; j < ysize; j++) |
137 | for (j = 0; j < ysize; j++) |
| 139 | { |
138 | { |
| 140 | if (maze[i][j] == '.') |
139 | if (maze[i][j] == '.') |
| 141 | maze[i][j] = 0; |
140 | maze[i][j] = 0; |
|
|
141 | |
| 142 | if (maze[i][j] == 'D') |
142 | if (maze[i][j] == 'D') |
| 143 | { /* remove bad door. */ |
143 | { /* remove bad door. */ |
| 144 | int si = surround_check (maze, i, j, xsize, ysize); |
144 | int si = surround_check (maze, i, j, xsize, ysize); |
| 145 | |
145 | |
| 146 | if (si != 3 && si != 12) |
146 | if (si != 3 && si != 12) |
| … | |
… | |
| 151 | j = 0; |
151 | j = 0; |
| 152 | } |
152 | } |
| 153 | } |
153 | } |
| 154 | } |
154 | } |
| 155 | |
155 | |
| 156 | free (Rooms); |
156 | sfree (rooms, nrooms + 1); |
| 157 | return maze; |
|
|
| 158 | } |
157 | } |
| 159 | |
|
|
| 160 | |
|
|
| 161 | |
158 | |
| 162 | static int |
159 | static int |
| 163 | roguelike_place_room (Room * Rooms, int xsize, int ysize, int nrooms) |
160 | roguelike_place_room (Room *rooms, int xsize, int ysize, int nrooms) |
| 164 | { |
161 | { |
| 165 | |
|
|
| 166 | int tx, ty; /* trial center locations */ |
162 | int tx, ty; /* trial center locations */ |
| 167 | int sx, sy; /* trial sizes */ |
163 | int sx, sy; /* trial sizes */ |
| 168 | int ax, ay; /* min coords of rect */ |
164 | int ax, ay; /* min coords of rect */ |
| 169 | int zx, zy; /* max coords of rect */ |
165 | int zx, zy; /* max coords of rect */ |
| 170 | int x_basesize; |
166 | int x_basesize; |
| 171 | int y_basesize; |
167 | int y_basesize; |
| 172 | Room *walk; |
168 | Room *walk; |
| 173 | |
169 | |
| 174 | /* decide on the base x and y sizes */ |
170 | /* decide on the base x and y sizes */ |
| 175 | |
|
|
| 176 | x_basesize = xsize / isqrt (nrooms); |
171 | x_basesize = xsize / isqrt (nrooms); |
| 177 | y_basesize = ysize / isqrt (nrooms); |
172 | y_basesize = ysize / isqrt (nrooms); |
| 178 | |
173 | |
| 179 | |
174 | tx = rndm (xsize); |
| 180 | tx = RANDOM () % xsize; |
175 | ty = rndm (ysize); |
| 181 | ty = RANDOM () % ysize; |
|
|
| 182 | |
176 | |
| 183 | /* generate a distribution of sizes centered about basesize */ |
177 | /* generate a distribution of sizes centered about basesize */ |
| 184 | sx = (RANDOM () % x_basesize) + (RANDOM () % x_basesize) + (RANDOM () % x_basesize); |
178 | sx = rndm (x_basesize) + rndm (x_basesize) + rndm (x_basesize); |
| 185 | sy = (RANDOM () % y_basesize) + (RANDOM () % y_basesize) + (RANDOM () % y_basesize); |
179 | sy = rndm (y_basesize) + rndm (y_basesize) + rndm (y_basesize); |
| 186 | sy = (int) (sy * .5); /* renormalize */ |
180 | sy = (int) (sy * .5); /* renormalize */ |
| 187 | |
181 | |
| 188 | /* find the corners */ |
182 | /* find the corners */ |
| 189 | ax = tx - sx / 2; |
183 | ax = tx - sx / 2; |
| 190 | zx = tx + sx / 2 + sx % 2; |
184 | zx = tx + sx / 2 + sx % 2; |
| 191 | |
185 | |
| 192 | ay = ty - sy / 2; |
186 | ay = ty - sy / 2; |
| 193 | zy = ty + sy / 2 + sy % 2; |
187 | zy = ty + sy / 2 + sy % 2; |
| 194 | |
188 | |
| 195 | /* check to see if it's in the map */ |
189 | /* check to see if it's in the map */ |
| 196 | if (zx > xsize - 1 || ax < 1) |
190 | if (zx > xsize - 1 || ax < 1) return 0; |
| 197 | return 0; |
|
|
| 198 | if (zy > ysize - 1 || ay < 1) |
191 | if (zy > ysize - 1 || ay < 1) return 0; |
| 199 | return 0; |
|
|
| 200 | |
192 | |
| 201 | /* no small fish */ |
193 | /* no small fish */ |
| 202 | if (sx < 3 || sy < 3) |
194 | if (sx < 3 || sy < 3) |
| 203 | return 0; |
195 | return 0; |
| 204 | |
196 | |
| 205 | /* check overlap with existing rooms */ |
197 | /* check overlap with existing rooms */ |
| 206 | for (walk = Rooms; walk->x != 0; walk++) |
198 | for (walk = rooms; walk->x != 0; walk++) |
| 207 | { |
199 | { |
| 208 | int dx = abs (tx - walk->x); |
200 | int dx = abs (tx - walk->x); |
| 209 | int dy = abs (ty - walk->y); |
201 | int dy = abs (ty - walk->y); |
| 210 | |
202 | |
| 211 | if ((dx < (walk->sx + sx) / 2 + 2) && (dy < (walk->sy + sy) / 2 + 2)) |
203 | if ((dx < (walk->sx + sx) / 2 + 2) && (dy < (walk->sy + sy) / 2 + 2)) |
| … | |
… | |
| 213 | } |
205 | } |
| 214 | |
206 | |
| 215 | /* if we've got here, presumably the room is OK. */ |
207 | /* if we've got here, presumably the room is OK. */ |
| 216 | |
208 | |
| 217 | /* get a pointer to the first free room */ |
209 | /* get a pointer to the first free room */ |
| 218 | for (walk = Rooms; walk->x != 0; walk++); |
210 | for (walk = rooms; walk->x != 0; walk++) |
|
|
211 | ; |
|
|
212 | |
| 219 | walk->x = tx; |
213 | walk->x = tx; |
| 220 | walk->y = ty; |
214 | walk->y = ty; |
| 221 | walk->sx = sx; |
215 | walk->sx = sx; |
| 222 | walk->sy = sy; |
216 | walk->sy = sy; |
| 223 | walk->ax = ax; |
217 | walk->ax = ax; |
| 224 | walk->ay = ay; |
218 | walk->ay = ay; |
| 225 | walk->zx = zx; |
219 | walk->zx = zx; |
| 226 | walk->zy = zy; |
220 | walk->zy = zy; |
|
|
221 | |
| 227 | return 1; /* success */ |
222 | return 1; /* success */ |
| 228 | |
|
|
| 229 | } |
223 | } |
| 230 | |
|
|
| 231 | |
224 | |
| 232 | /* write all the rooms into the maze */ |
225 | /* write all the rooms into the maze */ |
| 233 | static void |
226 | static void |
| 234 | roguelike_make_rooms (Room * Rooms, char **maze, int options) |
227 | roguelike_make_rooms (Room *rooms, char **maze, int options) |
| 235 | { |
228 | { |
| 236 | int making_circle = 0; |
229 | int making_circle = 0; |
| 237 | int i, j; |
230 | int i, j; |
| 238 | int R; |
231 | int R; |
| 239 | Room *walk; |
232 | Room *walk; |
| 240 | |
233 | |
| 241 | for (walk = Rooms; walk->x != 0; walk++) |
234 | for (walk = rooms; walk->x != 0; walk++) |
| 242 | { |
235 | { |
| 243 | /* first decide what shape to make */ |
236 | /* first decide what shape to make */ |
| 244 | switch (options) |
237 | switch (options) |
| 245 | { |
238 | { |
| 246 | case 1: |
239 | case 1: |
| 247 | making_circle = 0; |
240 | making_circle = 0; |
| 248 | break; |
241 | break; |
| 249 | case 2: |
242 | case 2: |
| 250 | making_circle = 1; |
243 | making_circle = 1; |
| 251 | break; |
244 | break; |
| 252 | default: |
245 | default: |
| 253 | making_circle = ((RANDOM () % 3 == 0) ? 1 : 0); |
246 | making_circle = ((rndm (3) == 0) ? 1 : 0); |
| 254 | break; |
247 | break; |
| 255 | } |
248 | } |
| 256 | |
249 | |
| 257 | if (walk->sx < walk->sy) |
250 | if (walk->sx < walk->sy) |
| 258 | R = walk->sx / 2; |
251 | R = walk->sx / 2; |
| 259 | else |
252 | else |
| 260 | R = walk->sy / 2; |
253 | R = walk->sy / 2; |
| 261 | |
254 | |
| 262 | /* enscribe a rectangle */ |
255 | /* enscribe a rectangle */ |
| 263 | for (i = walk->ax; i < walk->zx; i++) |
256 | for (i = walk->ax; i < walk->zx; i++) |
| 264 | for (j = walk->ay; j < walk->zy; j++) |
257 | for (j = walk->ay; j < walk->zy; j++) |
| 265 | { |
|
|
| 266 | if (!making_circle || ((int) (0.5 + hypot (walk->x - i, walk->y - j))) <= R) |
258 | if (!making_circle || ((int) (0.5 + hypot (walk->x - i, walk->y - j))) <= R) |
| 267 | maze[i][j] = '.'; |
259 | maze[i][j] = '.'; |
| 268 | } |
|
|
| 269 | } |
260 | } |
| 270 | } |
261 | } |
| 271 | |
|
|
| 272 | |
|
|
| 273 | |
262 | |
| 274 | static void |
263 | static void |
| 275 | roguelike_link_rooms (Room * Rooms, char **maze, int xsize, int ysize) |
264 | roguelike_link_rooms (Room *rooms, char **maze, int xsize, int ysize) |
| 276 | { |
265 | { |
| 277 | Room *walk; |
266 | Room *walk; |
| 278 | int i, j; |
267 | int i, j; |
| 279 | |
268 | |
| 280 | /* link each room to the previous room */ |
269 | /* link each room to the previous room */ |
| 281 | if (Rooms[1].x == 0) |
270 | if (rooms[1].x == 0) |
| 282 | return; /* only 1 room */ |
271 | return; /* only 1 room */ |
| 283 | |
272 | |
| 284 | for (walk = Rooms + 1; walk->x != 0; walk++) |
273 | for (walk = rooms + 1; walk->x != 0; walk++) |
| 285 | { |
274 | { |
| 286 | int x1 = walk->x; |
275 | int x1 = walk->x; |
| 287 | int y1 = walk->y; |
276 | int y1 = walk->y; |
| 288 | int x2 = (walk - 1)->x; |
277 | int x2 = (walk - 1)->x; |
| 289 | int y2 = (walk - 1)->y; |
278 | int y2 = (walk - 1)->y; |
| 290 | int in_wall = 0; |
279 | int in_wall = 0; |
| 291 | |
280 | |
| 292 | if (RANDOM () % 2) |
281 | if (rndm (2)) |
| 293 | { /* connect in x direction first */ |
282 | { /* connect in x direction first */ |
| 294 | /* horizontal connect */ |
283 | /* horizontal connect */ |
| 295 | /* swap (x1,y1) (x2,y2) if necessary */ |
284 | /* swap (x1,y1) (x2,y2) if necessary */ |
| 296 | |
285 | |
| 297 | if (x2 < x1) |
286 | if (x2 < x1) |
| … | |
… | |
| 398 | |
387 | |
| 399 | } |
388 | } |
| 400 | |
389 | |
| 401 | } |
390 | } |
| 402 | } |
391 | } |
|
|
392 | |
