| … | |
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| 23 | |
23 | |
| 24 | #include <global.h> |
24 | #include <global.h> |
| 25 | #include <random_map.h> |
25 | #include <random_map.h> |
| 26 | #include <rproto.h> |
26 | #include <rproto.h> |
| 27 | |
27 | |
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28 | void |
| 28 | layout::layout (int w, int h) |
29 | layout::alloc (int w, int h) |
| 29 | : w(w), h(h) |
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| 30 | { |
30 | { |
| 31 | assert (sizeof (cell) == 1); |
31 | assert (sizeof (cell) == 1); |
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32 | |
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33 | this->w = w; |
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34 | this->h = h; |
| 32 | |
35 | |
| 33 | // we store the layout in a single contiguous memory layout |
36 | // we store the layout in a single contiguous memory layout |
| 34 | // first part consists of pointers to each column, followed |
37 | // first part consists of pointers to each column, followed |
| 35 | // by the actual columns (not rows!) |
38 | // by the actual columns (not rows!) |
| 36 | int size = (sizeof (cell *) + sizeof (cell) * h) * w; |
39 | int size = (sizeof (cell *) + sizeof (cell) * h) * w; |
| … | |
… | |
| 41 | |
44 | |
| 42 | for (int x = w; x--; ) |
45 | for (int x = w; x--; ) |
| 43 | data [x] = p + x * h; |
46 | data [x] = p + x * h; |
| 44 | } |
47 | } |
| 45 | |
48 | |
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49 | layout::layout (int w, int h) |
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50 | { |
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51 | alloc (w, h); |
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52 | } |
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53 | |
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54 | layout::layout (layout ©) |
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55 | { |
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56 | alloc (copy.w, copy.h); |
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57 | |
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58 | memcpy (data [0], copy.data [0], sizeof (cell) * h * w); |
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59 | } |
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60 | |
| 46 | layout::~layout () |
61 | layout::~layout () |
| 47 | { |
62 | { |
| 48 | int size = (sizeof (cell *) + sizeof (cell) * h) * w; |
63 | int size = (sizeof (cell *) + sizeof (cell) * h) * w; |
| 49 | |
64 | |
| 50 | sfree ((char *)data, size); |
65 | sfree ((char *)data, size); |
| … | |
… | |
| 56 | memset (data [0], fill, w * h); |
71 | memset (data [0], fill, w * h); |
| 57 | } |
72 | } |
| 58 | |
73 | |
| 59 | void |
74 | void |
| 60 | layout::rect (int x1, int y1, int x2, int y2, char fill) |
75 | layout::rect (int x1, int y1, int x2, int y2, char fill) |
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76 | { |
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77 | --x2; |
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78 | |
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79 | memset (data [x1] + y1, fill, y2 - y1); |
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80 | memset (data [x2] + y1, fill, y2 - y1); |
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81 | |
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82 | while (++x1 < x2) |
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83 | data [x1][y1] = data [x1][y2 - 1] = fill; |
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84 | } |
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85 | |
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86 | void |
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87 | layout::fill_rect (int x1, int y1, int x2, int y2, char fill) |
| 61 | { |
88 | { |
| 62 | for (; x1 < x2; ++x1) |
89 | for (; x1 < x2; ++x1) |
| 63 | memset (data [x1] + y1, fill, y2 - y1); |
90 | memset (data [x1] + y1, fill, y2 - y1); |
| 64 | } |
91 | } |
| 65 | |
92 | |
| 66 | void layout::border (char fill) |
93 | void layout::border (char fill) |
| 67 | { |
94 | { |
| 68 | for (int i = 0; i < w; i++) data [i][0] = data [i][h - 1] = fill; |
95 | rect (0, 0, w, h, fill); |
| 69 | for (int j = 0; j < h; j++) data [0][j] = data [w - 1][j] = fill; |
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| 70 | } |
96 | } |
| 71 | |
97 | |
| 72 | void |
98 | void |
| 73 | layout::fill_rand (int percent) |
99 | layout::fill_rand (int percent) |
| 74 | { |
100 | { |
| … | |
… | |
| 156 | ///////////////////////////////////////////////////////////////////////////// |
182 | ///////////////////////////////////////////////////////////////////////////// |
| 157 | // isolation remover - ensures single connected area |
183 | // isolation remover - ensures single connected area |
| 158 | |
184 | |
| 159 | typedef fixed_stack<point> pointlist; |
185 | typedef fixed_stack<point> pointlist; |
| 160 | |
186 | |
| 161 | static noinline void |
187 | static void noinline |
| 162 | push_flood_fill (layout &dist, pointlist &seeds, int x, int y) |
188 | push_flood_fill (layout &dist, pointlist &seeds, int x, int y) |
| 163 | { |
189 | { |
| 164 | if (dist [x][y]) |
190 | if (dist [x][y]) |
| 165 | return; |
191 | return; |
| 166 | |
192 | |
| … | |
… | |
| 177 | ++y; |
203 | ++y; |
| 178 | } |
204 | } |
| 179 | |
205 | |
| 180 | while (--y >= y0) |
206 | while (--y >= y0) |
| 181 | { |
207 | { |
| 182 | if (x > 0) push_flood_fill (dist, seeds, x - 1, y); |
208 | if (x > 0 && !dist [x - 1][y]) push_flood_fill (dist, seeds, x - 1, y); |
| 183 | if (x < dist.w - 1) push_flood_fill (dist, seeds, x + 1, y); |
209 | if (x < dist.w - 1 && !dist [x + 1][y]) push_flood_fill (dist, seeds, x + 1, y); |
| 184 | } |
210 | } |
| 185 | } |
211 | } |
| 186 | |
212 | |
| 187 | static inline void |
213 | static inline void |
| 188 | make_tunnel (layout &dist, pointlist &seeds, int x, int y, U8 d) |
214 | make_tunnel (layout &dist, pointlist &seeds, int x, int y, U8 d) |
| 189 | { |
215 | { |
| 190 | for (;;) |
216 | for (;;) |
| 191 | { |
217 | { |
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218 | point neigh[4]; |
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219 | int ncnt = 0; |
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220 | |
| 192 | if (x > 1 && U8 (dist [x - 1][y]) < d && dist [x - 1][y] > 1) |
221 | if (x > 1 && U8 (dist [x - 1][y]) <= d && dist [x - 1][y] > 1) neigh [ncnt++] = point (x - 1, y); |
| 193 | --x; |
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| 194 | else if (x < dist.w - 2 && U8 (dist [x + 1][y]) < d && dist [x + 1][y] > 1) |
222 | if (x < dist.w - 2 && U8 (dist [x + 1][y]) <= d && dist [x + 1][y] > 1) neigh [ncnt++] = point (x + 1, y); |
| 195 | ++x; |
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| 196 | else if (y > 1 && U8 (dist [x][y - 1]) < d && dist [x][y - 1] > 1) |
223 | if (y > 1 && U8 (dist [x][y - 1]) <= d && dist [x][y - 1] > 1) neigh [ncnt++] = point (x, y - 1); |
| 197 | --y; |
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| 198 | else if (y < dist.h - 2 && U8 (dist [x][y + 1]) < d && dist [x][y + 1] > 1) |
224 | if (y < dist.h - 2 && U8 (dist [x][y + 1]) <= d && dist [x][y + 1] > 1) neigh [ncnt++] = point (x, y + 1); |
| 199 | ++y; |
225 | |
| 200 | else |
226 | printf ("tunnel %d+%d ncnt %d\n", x, y, ncnt);//D |
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227 | |
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228 | if (!ncnt) |
| 201 | break; |
229 | return; |
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230 | |
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231 | point &p = neigh [rmg_rndm (ncnt)]; |
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232 | |
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233 | seeds.push (p); |
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234 | |
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235 | x = p.x; |
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236 | y = p.y; |
| 202 | |
237 | |
| 203 | d = dist [x][y]; |
238 | d = dist [x][y]; |
| 204 | dist [x][y] = 1; |
239 | dist [x][y] = 1; |
| 205 | seeds.push (point (x, y)); |
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| 206 | } |
240 | } |
| 207 | } |
241 | } |
| 208 | |
242 | |
| 209 | static void inline |
243 | static void inline |
| 210 | maybe_push (layout &dist, pointlist &seeds, int x, int y, U8 d) |
244 | maybe_push (layout &dist, pointlist &seeds, int x, int y, U8 d) |
| … | |
… | |
| 217 | return; |
251 | return; |
| 218 | |
252 | |
| 219 | seeds.push (point (x, y)); |
253 | seeds.push (point (x, y)); |
| 220 | } |
254 | } |
| 221 | |
255 | |
| 222 | void |
256 | // isolation remover, works on a "distance" map |
| 223 | layout::isolation_remover (bool dirty) |
257 | // the map must be initialised with 0 == rooms, 255 = walls |
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258 | static void noinline |
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259 | isolation_remover (layout &dist) |
| 224 | { |
260 | { |
| 225 | layout dist (w, h); |
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| 226 | |
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| 227 | // dist contains |
261 | // dist contains |
| 228 | // 0 == invisited rooms |
262 | // 0 == invisited rooms |
| 229 | // 1 == visited rooms |
263 | // 1 == visited rooms |
| 230 | // 2+ shortest distance to random near room |
264 | // 2+ shortest distance to random near room |
| 231 | |
265 | |
| 232 | // phase 1, initialise dist array, find seed |
266 | // phase 1, find seed |
| 233 | int cnt = 0; |
267 | int cnt = 0; |
| 234 | int x, y; |
268 | int x, y; |
| 235 | |
269 | |
| 236 | for (int i = 0; i < w; ++i) |
270 | for (int i = 0; i < dist.w; ++i) |
| 237 | for (int j = 0; j < h; ++j) |
271 | for (int j = 0; j < dist.h; ++j) |
| 238 | { |
272 | if (!dist [i][j] && !rmg_rndm (++cnt)) |
| 239 | if (data [i][j] == '#') |
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| 240 | dist [i][j] = U8 (255); |
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| 241 | else |
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| 242 | { |
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| 243 | dist [i][j] = 0; |
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| 244 | if (!rmg_rndm (++cnt)) |
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| 245 | x = i, y = j; |
273 | x = i, y = j; |
| 246 | } |
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| 247 | } |
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| 248 | |
274 | |
| 249 | if (!cnt) |
275 | if (!cnt) |
| 250 | { |
276 | { |
| 251 | // map is completely massive, this is not good, |
277 | // map is completely massive, this is not good, |
| 252 | // so make it empty instead. |
278 | // so make it empty instead. |
| 253 | clear (); |
279 | dist.fill (1); |
| 254 | border (); |
280 | dist.border (255); |
| 255 | return; |
281 | return; |
| 256 | } |
282 | } |
| 257 | |
283 | |
| 258 | fixed_stack<point> seeds (w * h * 5); |
284 | fixed_stack<point> seeds (dist.w * dist.h * 5); |
| 259 | |
285 | |
| 260 | // found first free space - picking the first one gives |
286 | // found first free space - picking the first one gives |
| 261 | // us a slight bias for tunnels, but usually you won't |
287 | // us a slight bias for tunnels, but usually you won't |
| 262 | // notice that in-game |
288 | // notice that in-game |
| 263 | seeds.push (point (x, y)); |
289 | seeds.push (point (x, y)); |
| … | |
… | |
| 275 | y = p.y; |
301 | y = p.y; |
| 276 | |
302 | |
| 277 | if (!dist [x][y]) |
303 | if (!dist [x][y]) |
| 278 | { |
304 | { |
| 279 | // found new isolated area, make tunnel |
305 | // found new isolated area, make tunnel |
| 280 | if (!dirty) |
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| 281 | push_flood_fill (dist, seeds, x, y); |
306 | push_flood_fill (dist, seeds, x, y); |
| 282 | |
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| 283 | make_tunnel (dist, seeds, x, y, 255); |
307 | make_tunnel (dist, seeds, x, y, 255); |
| 284 | |
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| 285 | if (dirty) |
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| 286 | push_flood_fill (dist, seeds, x, y); |
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| 287 | } |
308 | } |
| 288 | else |
309 | else |
| 289 | { |
310 | { |
| 290 | // nothing here, continue to expand |
311 | // nothing here, continue to expand |
| 291 | U8 d = U8 (dist [x][y]) + 1; |
312 | U8 d = U8 (dist [x][y]) + 1; |
| 292 | |
313 | |
| 293 | if (x < dist.w - 1) maybe_push (dist, seeds, x + 1, y, d); |
314 | if (x < dist.w - 2) maybe_push (dist, seeds, x + 1, y, d); |
| 294 | if (x > 0) maybe_push (dist, seeds, x - 1, y, d); |
315 | if (x > 1) maybe_push (dist, seeds, x - 1, y, d); |
| 295 | if (y < dist.h - 1) maybe_push (dist, seeds, x, y + 1, d); |
316 | if (y < dist.h - 2) maybe_push (dist, seeds, x, y + 1, d); |
| 296 | if (y > 0) maybe_push (dist, seeds, x, y - 1, d); |
317 | if (y > 1) maybe_push (dist, seeds, x, y - 1, d); |
| 297 | } |
318 | } |
| 298 | } |
319 | } |
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320 | } |
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321 | |
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322 | void |
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323 | layout::isolation_remover () |
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324 | { |
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325 | layout dist (w, h); |
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326 | |
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327 | for (int x = 1; x < w - 1; ++x) |
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328 | for (int y = 1; y < h - 1; ++y) |
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329 | dist [x][y] = data [x][y] == '#' ? U8 (255) : 0; |
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330 | |
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331 | ::isolation_remover (dist); |
| 299 | |
332 | |
| 300 | // now copy the tunnels over |
333 | // now copy the tunnels over |
| 301 | for (int x = 0; x < w; ++x) |
334 | for (int x = 1; x < w - 1; ++x) |
| 302 | for (int y = 0; y < h; ++y) |
335 | for (int y = 1; y < h - 1; ++y) |
| 303 | if (data [x][y] == '#' && dist [x][y] == 1) |
336 | if (data [x][y] == '#' && dist [x][y] == 1) |
| 304 | data [x][y] = 0; |
337 | data [x][y] = 0; |
| 305 | } |
338 | } |
| 306 | |
339 | |
| 307 | ///////////////////////////////////////////////////////////////////////////// |
340 | ///////////////////////////////////////////////////////////////////////////// |
| … | |
… | |
| 312 | { |
345 | { |
| 313 | switch (subtype) |
346 | switch (subtype) |
| 314 | { |
347 | { |
| 315 | // a rough cave |
348 | // a rough cave |
| 316 | case 0: |
349 | case 0: |
| 317 | fill_rand (rmg_rndm (80, 95)); |
350 | fill_rand (rmg_rndm (85, 97)); |
| 318 | break; |
351 | break; |
| 319 | |
352 | |
| 320 | // corridors |
353 | // corridors |
| 321 | case 1: |
354 | case 1: |
| 322 | fill_rand (rmg_rndm (5, 40)); |
355 | fill_rand (rmg_rndm (5, 40)); |
| … | |
… | |
| 865 | { |
898 | { |
| 866 | demo () |
899 | demo () |
| 867 | { |
900 | { |
| 868 | rmg_rndm.seed (time (0)); |
901 | rmg_rndm.seed (time (0)); |
| 869 | |
902 | |
| 870 | for(int i=1;i<10;i) |
903 | for(int i=1;i<100;i++) |
| 871 | { |
904 | { |
| 872 | layout maze (10, 10); |
905 | layout maze (40, 25); |
| 873 | maze.fill_rand (90); |
906 | maze.fill_rand (85); |
| 874 | maze.border (); |
907 | maze.border (); |
| 875 | maze.isolation_remover (); |
908 | maze.isolation_remover (); |
| 876 | maze.doorify (); |
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| 877 | maze.symmetrize (rmg_rndm (2, 4)); |
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| 878 | maze.rotate (rmg_rndm (4)); |
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| 879 | maze.expand2x (); |
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| 880 | maze.print (); |
909 | maze.print (); |
| 881 | } |
910 | } |
| 882 | |
911 | |
| 883 | exit (1); |
912 | exit (1); |
| 884 | } |
913 | } |
