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Comparing deliantra/server/common/los.C (file contents):
Revision 1.46 by root, Tue Dec 23 00:39:48 2008 UTC vs.
Revision 1.51 by root, Wed Dec 24 01:37:23 2008 UTC

… …
19 * along with this program. If not, see <http://www.gnu.org/licenses/>. 19 * along with this program. If not, see <http://www.gnu.org/licenses/>.
20 * 20 *
21 * The authors can be reached via e-mail to <support@deliantra.net> 21 * The authors can be reached via e-mail to <support@deliantra.net>
22 */ 22 */
23 23
24/* Nov 95 - inserted USE_LIGHTING code stuff in here - b.t. */
25
26#include <global.h> 24#include <global.h>
27#include <cmath> 25#include <cmath>
28 26
29static void expand_lighted_sight (object *op); 27#define SEE_IN_DARK_RADIUS 3
30 28
29// los flags
31enum { 30enum {
32 LOS_XI = 0x01, 31 FLG_XI = 0x01, // we have an x-parent
33 LOS_YI = 0x02, 32 FLG_YI = 0x02, // we have an y-parent
33 FLG_BLOCKED = 0x04, // this space blocks the view
34 FLG_QUEUED = 0x80 // already queued in queue, or border
34}; 35};
35 36
36struct los_info 37struct los_info
37{ 38{
39 uint8 flags; // FLG_xxx
40 uint8 culled; // culled from "tree"
41 uint8 visible;
42 uint8 pad0;
43
38 sint8 xo, yo; // obscure angle 44 sint8 xo, yo; // obscure angle
39 sint8 xe, ye; // angle deviation 45 sint8 xe, ye; // angle deviation
40 uint8 culled; // culled from "tree"
41 uint8 queued; // already queued
42 uint8 visible;
43 uint8 flags; // LOS_XI/YI
44}; 46};
45 47
46// temporary storage for the los algorithm, 48// temporary storage for the los algorithm,
47// one los_info for each lightable map space 49// one los_info for each lightable map space
48static los_info los[MAP_CLIENT_X][MAP_CLIENT_Y]; 50static los_info los[MAP_CLIENT_X][MAP_CLIENT_Y];
… …
75enqueue (sint8 dx, sint8 dy, uint8 flags = 0) 77enqueue (sint8 dx, sint8 dy, uint8 flags = 0)
76{ 78{
77 sint8 x = LOS_X0 + dx; 79 sint8 x = LOS_X0 + dx;
78 sint8 y = LOS_Y0 + dy; 80 sint8 y = LOS_Y0 + dy;
79 81
80 if (x < 0 || x >= MAP_CLIENT_X) return;
81 if (y < 0 || y >= MAP_CLIENT_Y) return;
82
83 los_info &l = los[x][y]; 82 los_info &l = los[x][y];
84 83
85 l.flags |= flags; 84 l.flags |= flags;
86 85
87 if (l.queued) 86 if (l.flags & FLG_QUEUED)
88 return; 87 return;
89 88
90 l.queued = 1; 89 l.flags |= FLG_QUEUED;
91 90
92 queue[q1].x = dx; 91 queue[q1].x = dx;
93 queue[q1].y = dy; 92 queue[q1].y = dy;
94 93
95 q1 = (q1 + 1) & (QUEUE_LENGTH - 1); 94 q1 = (q1 + 1) & (QUEUE_LENGTH - 1);
… …
99// this is a variant of a spiral los algorithm taken from 98// this is a variant of a spiral los algorithm taken from
100// http://www.geocities.com/temerra/los_rays.html 99// http://www.geocities.com/temerra/los_rays.html
101// which has been simplified and changed considerably, but 100// which has been simplified and changed considerably, but
102// still is basically the same algorithm. 101// still is basically the same algorithm.
103static void 102static void
104do_los (object *op) 103calculate_los (player *pl)
105{ 104{
106 player *pl = op->contr; 105 {
106 // we keep one line for ourselves, for the border flag
107 // so the client area is actually MAP_CLIENT_(X|Y) - 2
108 int half_x = min (LOS_X0 - 1, pl->ns->mapx / 2);
109 int half_y = min (LOS_Y0 - 1, pl->ns->mapy / 2);
107 110
108 int max_radius = max (pl->ns->mapx, pl->ns->mapy) / 2; 111 // create borders, the corners are not touched
112 for (int dx = -half_x; dx <= half_x; ++dx)
113 los [dx + LOS_X0][LOS_Y0 - (half_y + 1)].flags =
114 los [dx + LOS_X0][LOS_Y0 + (half_y + 1)].flags = FLG_QUEUED;
109 115
110 memset (los, 0, sizeof (los)); 116 for (int dy = -half_y; dy <= half_y; ++dy)
117 los [LOS_X0 - (half_x + 1)][dy + LOS_Y0].flags =
118 los [LOS_X0 + (half_x + 1)][dy + LOS_Y0].flags = FLG_QUEUED;
119
120 // now reset the los area and also add blocked flags
121 // which supposedly is faster than doing it inside the
122 // spiral path algorithm below, except when very little
123 // area is visible, in which case it is slower, evening
124 // out los calculation times between large and small los maps.
125 // apply_lights also iterates over this area, maybe these
126 // two passes could be combined somehow.
127 rectangular_mapspace_iterate_begin (pl->observe, -half_x, half_x, -half_y, half_y)
128 los_info &l = los [LOS_X0 + dx][LOS_Y0 + dy];
129 l.flags = m && m->at (nx, ny).flags () & P_BLOCKSVIEW ? FLG_BLOCKED : 0;
130 rectangular_mapspace_iterate_end
131 }
111 132
112 q1 = 0; q2 = 0; // initialise queue, not strictly required 133 q1 = 0; q2 = 0; // initialise queue, not strictly required
113 enqueue (0, 0); // enqueue center 134 enqueue (0, 0); // enqueue center
114 135
115 // treat the origin specially 136 // treat the origin specially
… …
128 q2 = (q2 + 1) & (QUEUE_LENGTH - 1); 149 q2 = (q2 + 1) & (QUEUE_LENGTH - 1);
129 150
130 sint8 x = LOS_X0 + dx; 151 sint8 x = LOS_X0 + dx;
131 sint8 y = LOS_Y0 + dy; 152 sint8 y = LOS_Y0 + dy;
132 153
133 //int distance = idistance (dx, dy); if (distance > max_radius) continue;//D
134 int distance = 0;//D
135
136 los_info &l = los[x][y]; 154 los_info &l = los[x][y];
137 155
138 if (expect_true (l.flags & (LOS_XI | LOS_YI))) 156 if (expect_true (l.flags & (FLG_XI | FLG_YI)))
139 { 157 {
140 l.culled = 1; 158 l.culled = 1;
159 l.xo = l.yo = l.xe = l.ye = 0;
141 160
142 // check contributing spaces, first horizontal 161 // check contributing spaces, first horizontal
143 if (expect_true (l.flags & LOS_XI)) 162 if (expect_true (l.flags & FLG_XI))
144 { 163 {
145 los_info *xi = &los[x - sign (dx)][y]; 164 los_info *xi = &los[x - sign (dx)][y];
146 165
147 // don't cull unless obscured 166 // don't cull unless obscured
148 l.culled &= !xi->visible; 167 l.culled &= !xi->visible;
… …
173 } 192 }
174 } 193 }
175 } 194 }
176 195
177 // check contributing spaces, last vertical, identical structure 196 // check contributing spaces, last vertical, identical structure
178 if (expect_true (l.flags & LOS_YI)) 197 if (expect_true (l.flags & FLG_YI))
179 { 198 {
180 los_info *yi = &los[x][y - sign (dy)]; 199 los_info *yi = &los[x][y - sign (dy)];
181 200
182 // don't cull unless obscured 201 // don't cull unless obscured
183 l.culled &= !yi->visible; 202 l.culled &= !yi->visible;
… …
207 l.xo = yi->xo; 226 l.xo = yi->xo;
208 } 227 }
209 } 228 }
210 } 229 }
211 230
212 // check whether this space blocks the view 231 if (l.flags & FLG_BLOCKED)
213 maptile *m = op->map;
214 sint16 nx = op->x + dx;
215 sint16 ny = op->y + dy;
216
217 if (expect_true (!xy_normalise (m, nx, ny))
218 || expect_false (m->at (nx, ny).flags () & P_BLOCKSVIEW))
219 { 232 {
220 l.xo = l.xe = abs (dx); 233 l.xo = l.xe = abs (dx);
221 l.yo = l.ye = abs (dy); 234 l.yo = l.ye = abs (dy);
222 235
223 // we obscure dependents, but might be visible 236 // we obscure dependents, but might be visible
224 // copy the los from the square towards the player, 237 // copy the los from the square towards the player,
225 // so outward diagonal corners are lit. 238 // so outward diagonal corners are lit.
226 pl->los[x][y] = los[x - sign0 (dx)][y - sign0 (dy)].visible ? 0 : LOS_BLOCKED; 239 pl->los[x][y] = los[x - sign0 (dx)][y - sign0 (dy)].visible ? 0 : LOS_BLOCKED;
240
227 l.visible = false; 241 l.visible = false;
228 } 242 }
229 else 243 else
230 { 244 {
231 // we are not blocked, so calculate visibility, by checking 245 // we are not blocked, so calculate visibility, by checking
232 // whether we are inside or outside the shadow 246 // whether we are inside or outside the shadow
233 l.visible = (l.xe <= 0 || l.xe > l.xo) 247 l.visible = (l.xe <= 0 || l.xe > l.xo)
234 && (l.ye <= 0 || l.ye > l.yo); 248 && (l.ye <= 0 || l.ye > l.yo);
235 249
236 pl->los[x][y] = l.culled ? LOS_BLOCKED 250 pl->los[x][y] = l.culled ? LOS_BLOCKED
237 : l.visible ? max (0, 2 - max_radius + distance) 251 : l.visible ? 0
238 : 3; 252 : 3;
239 } 253 }
240 254
241 } 255 }
242 256
243 // Expands by the unit length in each component's current direction. 257 // Expands by the unit length in each component's current direction.
244 // If a component has no direction, then it is expanded in both of its 258 // If a component has no direction, then it is expanded in both of its
245 // positive and negative directions. 259 // positive and negative directions.
246 if (!l.culled) 260 if (!l.culled)
247 { 261 {
248 if (dx >= 0) enqueue (dx + 1, dy, LOS_XI); 262 if (dx >= 0) enqueue (dx + 1, dy, FLG_XI);
249 if (dx <= 0) enqueue (dx - 1, dy, LOS_XI); 263 if (dx <= 0) enqueue (dx - 1, dy, FLG_XI);
250 if (dy >= 0) enqueue (dx, dy + 1, LOS_YI); 264 if (dy >= 0) enqueue (dx, dy + 1, FLG_YI);
251 if (dy <= 0) enqueue (dx, dy - 1, LOS_YI); 265 if (dy <= 0) enqueue (dx, dy - 1, FLG_YI);
252 } 266 }
253 } 267 }
254} 268}
255 269
256/* returns true if op carries one or more lights 270/* returns true if op carries one or more lights
… …
268 return 0; 282 return 0;
269} 283}
270 284
271/* radius, distance => lightness adjust */ 285/* radius, distance => lightness adjust */
272static sint8 light_atten[MAX_LIGHT_RADIUS * 2 + 1][MAX_LIGHT_RADIUS * 3 / 2 + 1]; 286static sint8 light_atten[MAX_LIGHT_RADIUS * 2 + 1][MAX_LIGHT_RADIUS * 3 / 2 + 1];
273static sint8 vision_atten[MAX_DARKNESS + 1][MAX_DARKNESS * 3 / 2 + 1]; 287static sint8 vision_atten[MAX_DARKNESS + SEE_IN_DARK_RADIUS + 1][(MAX_DARKNESS + SEE_IN_DARK_RADIUS) * 3 / 2 + 1];
274 288
275static struct los_init 289static struct los_init
276{ 290{
277 los_init () 291 los_init ()
278 { 292 {
293 assert (("QUEUE_LENGTH, MAP_CLIENT_X and MAP_CLIENT_Y *must* be powers of two",
294 !(QUEUE_LENGTH & (QUEUE_LENGTH - 1))));
295
279 /* for lights */ 296 /* for lights */
280 for (int radius = -MAX_LIGHT_RADIUS; radius <= MAX_LIGHT_RADIUS; ++radius) 297 for (int radius = -MAX_LIGHT_RADIUS; radius <= MAX_LIGHT_RADIUS; ++radius)
281 for (int distance = 0; distance <= MAX_LIGHT_RADIUS * 3 / 2; ++distance) 298 for (int distance = 0; distance <= MAX_LIGHT_RADIUS * 3 / 2; ++distance)
282 { 299 {
283 // max intensity 300 // max intensity
… …
290 ? min (3, intensity) 307 ? min (3, intensity)
291 : LOS_MAX - intensity; 308 : LOS_MAX - intensity;
292 } 309 }
293 310
294 /* for general vision */ 311 /* for general vision */
295 for (int radius = 0; radius <= MAX_DARKNESS; ++radius) 312 for (int radius = 0; radius <= MAX_DARKNESS + SEE_IN_DARK_RADIUS; ++radius)
296 for (int distance = 0; distance <= MAX_DARKNESS * 3 / 2; ++distance) 313 for (int distance = 0; distance <= (MAX_DARKNESS + SEE_IN_DARK_RADIUS) * 3 / 2; ++distance)
297 {
298 vision_atten [radius][distance] = distance <= radius ? 3 : 4; 314 vision_atten [radius][distance] = distance <= radius ? 3 : 4;
299 }
300 } 315 }
301} los_init; 316} los_init;
302 317
303sint8 318sint8
304los_brighten (sint8 b, sint8 l) 319los_brighten (sint8 b, sint8 l)
… …
312 return max (b, l); 327 return max (b, l);
313} 328}
314 329
315template<sint8 change_it (sint8, sint8)> 330template<sint8 change_it (sint8, sint8)>
316static void 331static void
317apply_light (object *op, int dx, int dy, int light, const sint8 *atten_table) 332apply_light (player *pl, int dx, int dy, int light, const sint8 *atten_table)
318{ 333{
319 // min or max the circular area around basex, basey 334 // min or max the circular area around basex, basey
320 player *pl = op->contr;
321
322 dx += LOS_X0; 335 dx += LOS_X0;
323 dy += LOS_Y0; 336 dy += LOS_Y0;
324 337
325 int hx = op->contr->ns->mapx / 2; 338 int hx = pl->ns->mapx / 2;
326 int hy = op->contr->ns->mapy / 2; 339 int hy = pl->ns->mapy / 2;
327 340
328 int ax0 = max (LOS_X0 - hx, dx - light); 341 int ax0 = max (LOS_X0 - hx, dx - light);
329 int ay0 = max (LOS_Y0 - hy, dy - light); 342 int ay0 = max (LOS_Y0 - hy, dy - light);
330 int ax1 = min (dx + light, LOS_X0 + hx); 343 int ax1 = min (dx + light, LOS_X0 + hx);
331 int ay1 = min (dy + light, LOS_Y0 + hy); 344 int ay1 = min (dy + light, LOS_Y0 + hy);
… …
338 351
339/* add light, by finding all (non-null) nearby light sources, then 352/* add light, by finding all (non-null) nearby light sources, then
340 * mark those squares specially. 353 * mark those squares specially.
341 */ 354 */
342static void 355static void
343apply_lights (object *op) 356apply_lights (player *pl)
344{ 357{
345 int darklevel, mflags, light, x1, y1; 358 object *op = pl->observe;
346 maptile *m = op->map; 359 int darklevel = op->map->darklevel ();
347 sint16 nx, ny;
348 360
349 darklevel = m->darkness;
350
351 /* If the player can see in the dark, lower the darklevel for him */
352 if (QUERY_FLAG (op, FLAG_SEE_IN_DARK))
353 darklevel -= LOS_MAX / 2;
354
355 /* Do a sanity check. If not valid, some code below may do odd
356 * things.
357 */
358 if (darklevel > MAX_DARKNESS)
359 {
360 LOG (llevError, "Map darkness for %s on %s is too high (%d)\n", &op->name, &op->map->path, darklevel);
361 darklevel = MAX_DARKNESS;
362 }
363
364 int half_x = op->contr->ns->mapx / 2; 361 int half_x = pl->ns->mapx / 2;
365 int half_y = op->contr->ns->mapy / 2; 362 int half_y = pl->ns->mapy / 2;
366
367 int min_x = op->x - half_x - MAX_LIGHT_RADIUS;
368 int min_y = op->y - half_y - MAX_LIGHT_RADIUS;
369 int max_x = op->x + half_x + MAX_LIGHT_RADIUS;
370 int max_y = op->y + half_y + MAX_LIGHT_RADIUS;
371 363
372 int pass2 = 0; // negative lights have an extra pass 364 int pass2 = 0; // negative lights have an extra pass
373 365
374 if (darklevel < 1) 366 if (!darklevel)
375 pass2 = 1; 367 pass2 = 1;
376 else 368 else
377 { 369 {
378 /* first, make everything totally dark */ 370 /* first, make everything totally dark */
379 for (int dx = -half_x; dx <= half_x; dx++) 371 for (int dx = -half_x; dx <= half_x; dx++)
380 for (int dy = -half_x; dy <= half_y; dy++) 372 for (int dy = -half_x; dy <= half_y; dy++)
381 if (op->contr->los[dx + LOS_X0][dy + LOS_Y0] != LOS_BLOCKED)
382 op->contr->los[dx + LOS_X0][dy + LOS_Y0] = LOS_MAX; 373 max_it (pl->los[dx + LOS_X0][dy + LOS_Y0], LOS_MAX);
383 374
384 /* 375 /*
385 * Only process the area of interest. 376 * Only process the area of interest.
386 * the basex, basey values represent the position in the op->contr->los 377 * the basex, basey values represent the position in the op->contr->los
387 * array. Its easier to just increment them here (and start with the right 378 * array. Its easier to just increment them here (and start with the right
388 * value) than to recalculate them down below. 379 * value) than to recalculate them down below.
389 */ 380 */
390 for (int x = min_x; x <= max_x; x++) 381 rectangular_mapspace_iterate_begin (pl->observe, -half_x - MAX_LIGHT_RADIUS, half_x + MAX_LIGHT_RADIUS, -half_y - MAX_LIGHT_RADIUS, half_y + MAX_LIGHT_RADIUS)
391 for (int y = min_y; y <= max_y; y++) 382 if (m)
392 { 383 {
393 maptile *m = op->map;
394 sint16 nx = x;
395 sint16 ny = y;
396
397 if (!xy_normalise (m, nx, ny))
398 continue;
399
400 mapspace &ms = m->at (nx, ny); 384 mapspace &ms = m->at (nx, ny);
401 ms.update (); 385 ms.update ();
402 sint8 light = ms.light; 386 sint8 light = ms.light;
403 387
404 if (expect_false (light)) 388 if (expect_false (light))
405 if (light < 0) 389 if (light < 0)
406 pass2 = 1; 390 pass2 = 1;
407 else 391 else
408 apply_light<los_brighten> (op, x - op->x, y - op->y, light, light_atten [light + MAX_LIGHT_RADIUS]); 392 apply_light<los_brighten> (pl, dx, dy, light, light_atten [light + MAX_LIGHT_RADIUS]);
409 } 393 }
394 rectangular_mapspace_iterate_end
410 395
411 /* grant some vision to the player, based on the darklevel */ 396 /* grant some vision to the player, based on the darklevel */
412 { 397 {
413 int light = clamp (MAX_DARKNESS - darklevel, 0, MAX_DARKNESS); 398 int light = clamp (MAX_DARKNESS - darklevel, 0, MAX_DARKNESS);
414 399
400 /* If the player can see in the dark, lower the darklevel for him */
401 if (op->flag [FLAG_SEE_IN_DARK])
402 light += SEE_IN_DARK_RADIUS;
403
415 apply_light<los_brighten> (op, 0, 0, light, vision_atten [light]); 404 apply_light<los_brighten> (pl, 0, 0, light, vision_atten [light]);
416 } 405 }
417 } 406 }
418 407
419 // possibly do 2nd pass for rare negative glow radii 408 // possibly do 2nd pass for rare negative glow radii
420 // for effect, those are always considered to be stronger than anything else 409 // for effect, those are always considered to be stronger than anything else
421 // but they can't darken a place completely 410 // but they can't darken a place completely
422 if (pass2) 411 if (pass2)
423 for (int x = min_x; x <= max_x; x++) 412 rectangular_mapspace_iterate_begin (pl->observe, -half_x - MAX_LIGHT_RADIUS, half_x + MAX_LIGHT_RADIUS, -half_y - MAX_LIGHT_RADIUS, half_y + MAX_LIGHT_RADIUS)
424 for (int y = min_y; y <= max_y; y++) 413 if (m)
425 { 414 {
426 maptile *m = op->map;
427 sint16 nx = x;
428 sint16 ny = y;
429
430 if (!xy_normalise (m, nx, ny))
431 continue;
432
433 mapspace &ms = m->at (nx, ny); 415 mapspace &ms = m->at (nx, ny);
434 ms.update (); 416 ms.update ();
435 sint8 light = ms.light; 417 sint8 light = ms.light;
436 418
437 if (expect_false (light < 0)) 419 if (expect_false (light < 0))
438 apply_light<los_darken> (op, x - op->x, y - op->y, -light, light_atten [light + MAX_LIGHT_RADIUS]); 420 apply_light<los_darken> (pl, dx, dy, -light, light_atten [light + MAX_LIGHT_RADIUS]);
439 } 421 }
422 rectangular_mapspace_iterate_end
440} 423}
441 424
442/* blinded_sight() - sets all viewable squares to blocked except 425/* blinded_sight() - sets all viewable squares to blocked except
443 * for the one the central one that the player occupies. A little 426 * for the one the central one that the player occupies. A little
444 * odd that you can see yourself (and what your standing on), but 427 * odd that you can see yourself (and what your standing on), but
445 * really need for any reasonable game play. 428 * really need for any reasonable game play.
446 */ 429 */
447static void 430static void
448blinded_sight (object *op) 431blinded_sight (player *pl)
449{ 432{
450 op->contr->los[LOS_X0][LOS_Y0] = 1; 433 pl->los[LOS_X0][LOS_Y0] = 1;
451} 434}
452 435
453/* 436/*
454 * update_los() recalculates the array which specifies what is 437 * update_los() recalculates the array which specifies what is
455 * visible for the given player-object. 438 * visible for the given player-object.
456 */ 439 */
457void 440void
458update_los (object *op) 441player::update_los ()
459{ 442{
460 if (QUERY_FLAG (op, FLAG_REMOVED)) 443 if (ob->flag [FLAG_REMOVED])//D really needed?
461 return; 444 return;
462 445
463 op->contr->clear_los (); 446 if (ob->flag [FLAG_WIZLOOK])
464 447 clear_los (0);
465 if (QUERY_FLAG (op, FLAG_WIZ) /* ||XRAYS(op) */ )
466 memset (op->contr->los, 0, sizeof (op->contr->los));
467 else if (QUERY_FLAG (op, FLAG_BLIND)) /* player is blind */ 448 else if (observe->flag [FLAG_BLIND]) /* player is blind */
449 {
450 clear_los ();
468 blinded_sight (op); 451 blinded_sight (this);
452 }
469 else 453 else
470 { 454 {
471 do_los (op); 455 clear_los ();
456 calculate_los (this);
472 apply_lights (op); 457 apply_lights (this);
473 } 458 }
474 459
475 if (QUERY_FLAG (op, FLAG_XRAYS)) 460 if (observe->flag [FLAG_XRAYS])
476 for (int dx = -2; dx <= 2; dx++) 461 for (int dx = -2; dx <= 2; dx++)
477 for (int dy = -2; dy <= 2; dy++) 462 for (int dy = -2; dy <= 2; dy++)
478 op->contr->los[dx + LOS_X0][dy + LOS_X0] = 0; 463 min_it (los[dx + LOS_X0][dy + LOS_Y0], 1);
479} 464}
480 465
481/* update all_map_los is like update_all_los below, 466/* update all_map_los is like update_all_los below,
482 * but updates everyone on the map, no matter where they 467 * but updates everyone on the map, no matter where they
483 * are. This generally should not be used, as a per 468 * are. This generally should not be used, as a per
… …
572 pl->do_los = 1; 557 pl->do_los = 1;
573 } 558 }
574 } 559 }
575} 560}
576 561
562static const int season_darkness[5][HOURS_PER_DAY] = {
563 /*0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 1 2 3 4 5 6 7 8 9 10 11 12 13 */
564 { 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 0, 0, 0, 0, 1, 2, 2, 2, 3, 3, 4, 4, 5 },
565 { 5, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1, 2, 2, 3, 3, 4, 4 },
566 { 5, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 2, 2, 3, 4, 4 },
567 { 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 2, 2, 3, 4 },
568 { 5, 5, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 2, 2, 3, 3, 4 }
569};
570
571/*
572 * Tell players the time and compute the darkness level for all maps in the game.
573 * MUST be called exactly once per hour.
574 */
575void
576maptile::adjust_daylight ()
577{
578 timeofday_t tod;
579
580 get_tod (&tod);
581
582 // log the time to log-1 every hour, and to chat every day
583 {
584 char todbuf[512];
585
586 format_tod (todbuf, sizeof (todbuf), &tod);
587
588 for_all_players (pl)
589 pl->ns->send_msg (NDI_GREY, tod.hour == 15 ? CHAT_CHANNEL : LOG_CHANNEL, todbuf);
590 }
591
592 /* If the light level isn't changing, no reason to do all
593 * the work below.
594 */
595 sint8 new_darkness = season_darkness[tod.season][tod.hour];
596
597 if (new_darkness == maptile::outdoor_darkness)
598 return;
599
600 new_draw_info (NDI_GREY | NDI_UNIQUE | NDI_ALL, 1, 0,
601 new_darkness > maptile::outdoor_darkness
602 ? "It becomes darker."
603 : "It becomes brighter.");
604
605 maptile::outdoor_darkness = new_darkness;
606
607 // we simply update the los for all players, which is unnecessarily
608 // costly, but should do for the moment.
609 for_all_players (pl)
610 pl->do_los = 1;
611}
612
577/* 613/*
578 * make_sure_seen: The object is supposed to be visible through walls, thus 614 * make_sure_seen: The object is supposed to be visible through walls, thus
579 * check if any players are nearby, and edit their LOS array. 615 * check if any players are nearby, and edit their LOS array.
580 */ 616 */
581void 617void
… …
583{ 619{
584 for_all_players (pl) 620 for_all_players (pl)
585 if (pl->ob->map == op->map && 621 if (pl->ob->map == op->map &&
586 pl->ob->y - pl->ns->mapy / 2 <= op->y && 622 pl->ob->y - pl->ns->mapy / 2 <= op->y &&
587 pl->ob->y + pl->ns->mapy / 2 >= op->y && pl->ob->x - pl->ns->mapx / 2 <= op->x && pl->ob->x + pl->ns->mapx / 2 >= op->x) 623 pl->ob->y + pl->ns->mapy / 2 >= op->y && pl->ob->x - pl->ns->mapx / 2 <= op->x && pl->ob->x + pl->ns->mapx / 2 >= op->x)
588 pl->los[op->x - pl->ob->x + LOS_X0][op->y - pl->ob->y + LOS_X0] = 0; 624 pl->los[op->x - pl->ob->x + LOS_X0][op->y - pl->ob->y + LOS_Y0] = 0;
589} 625}
590 626
591/* 627/*
592 * make_sure_not_seen: The object which is supposed to be visible through 628 * make_sure_not_seen: The object which is supposed to be visible through
593 * walls has just been removed from the map, so update the los of any 629 * walls has just been removed from the map, so update the los of any

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