6 #include "floor-events.h"
9 #include "monster-status.h"
11 #include "object-hook.h"
12 #include "player-move.h"
14 #include "player-effects.h"
15 #include "objectkind.h"
16 #include "object-ego.h"
18 #include "view-mainwindow.h"
20 static bool mon_invis;
21 static POSITION mon_fy, mon_fx;
23 void day_break(floor_type *floor_ptr)
26 msg_print(_("夜が明けた。", "The sun has risen."));
28 if (!p_ptr->wild_mode)
30 /* Hack -- Scan the town */
31 for (y = 0; y < floor_ptr->height; y++)
33 for (x = 0; x < floor_ptr->width; x++)
35 grid_type *g_ptr = &floor_ptr->grid_array[y][x];
38 g_ptr->info |= (CAVE_GLOW);
40 /* Hack -- Memorize lit grids if allowed */
41 if (view_perma_grids) g_ptr->info |= (CAVE_MARK);
48 p_ptr->update |= (PU_MONSTERS | PU_MON_LITE);
49 p_ptr->redraw |= (PR_MAP);
50 p_ptr->window |= (PW_OVERHEAD | PW_DUNGEON);
52 if (p_ptr->special_defense & NINJA_S_STEALTH)
54 if (floor_ptr->grid_array[p_ptr->y][p_ptr->x].info & CAVE_GLOW) set_superstealth(p_ptr, FALSE);
59 void night_falls(floor_type *floor_ptr)
62 msg_print(_("日が沈んだ。", "The sun has fallen."));
64 if (!p_ptr->wild_mode)
66 /* Hack -- Scan the town */
67 for (y = 0; y < floor_ptr->height; y++)
69 for (x = 0; x < floor_ptr->width; x++)
71 grid_type *g_ptr = &floor_ptr->grid_array[y][x];
73 /* Feature code (applying "mimic" field) */
74 feature_type *f_ptr = &f_info[get_feat_mimic(g_ptr)];
76 if (!is_mirror_grid(g_ptr) && !have_flag(f_ptr->flags, FF_QUEST_ENTER) &&
77 !have_flag(f_ptr->flags, FF_ENTRANCE))
80 g_ptr->info &= ~(CAVE_GLOW);
82 if (!have_flag(f_ptr->flags, FF_REMEMBER))
84 /* Forget the normal floor grid */
85 g_ptr->info &= ~(CAVE_MARK);
92 glow_deep_lava_and_bldg(floor_ptr);
96 p_ptr->update |= (PU_MONSTERS | PU_MON_LITE);
97 p_ptr->redraw |= (PR_MAP);
98 p_ptr->window |= (PW_OVERHEAD | PW_DUNGEON);
100 if (p_ptr->special_defense & NINJA_S_STEALTH)
102 if (floor_ptr->grid_array[p_ptr->y][p_ptr->x].info & CAVE_GLOW) set_superstealth(p_ptr, FALSE);
108 * @brief 現在フロアに残っている敵モンスターの数を返す /
109 * @return 現在の敵モンスターの数
111 MONSTER_NUMBER count_all_hostile_monsters(floor_type *floor_ptr)
114 MONSTER_NUMBER number_mon = 0;
116 for (x = 0; x < floor_ptr->width; ++x)
118 for (y = 0; y < floor_ptr->height; ++y)
120 MONSTER_IDX m_idx = floor_ptr->grid_array[y][x].m_idx;
122 if (m_idx > 0 && is_hostile(&floor_ptr->m_list[m_idx]))
135 * ダンジョンの雰囲気を計算するための非線形基準値 / Dungeon rating is no longer linear
137 #define RATING_BOOST(delta) (delta * delta + 50 * delta)
140 * @brief ダンジョンの雰囲気を算出する。
141 * / Examine all monsters and unidentified objects, and get the feeling of current dungeon floor
142 * @return 算出されたダンジョンの雰囲気ランク
144 byte get_dungeon_feeling(floor_type *floor_ptr)
150 /* Hack -- no feeling in the town */
151 if (!floor_ptr->dun_level) return 0;
153 /* Examine each monster */
154 for (i = 1; i < floor_ptr->m_max; i++)
156 monster_type *m_ptr = &floor_ptr->m_list[i];
159 if (!monster_is_valid(m_ptr)) continue;
161 if (is_pet(m_ptr)) continue;
163 r_ptr = &r_info[m_ptr->r_idx];
165 if (r_ptr->flags1 & (RF1_UNIQUE))
167 /* Nearly out-of-depth unique monsters */
168 if (r_ptr->level + 10 > floor_ptr->dun_level)
170 /* Boost rating by twice delta-depth */
171 delta += (r_ptr->level + 10 - floor_ptr->dun_level) * 2 * base;
176 /* Out-of-depth monsters */
177 if (r_ptr->level > floor_ptr->dun_level)
179 /* Boost rating by delta-depth */
180 delta += (r_ptr->level - floor_ptr->dun_level) * base;
184 /* Unusually crowded monsters get a little bit of rating boost */
185 if (r_ptr->flags1 & RF1_FRIENDS)
187 if (5 <= get_monster_crowd_number(i)) delta += 1;
191 if (2 <= get_monster_crowd_number(i)) delta += 1;
195 rating += RATING_BOOST(delta);
198 /* Examine each unidentified object */
199 for (i = 1; i < floor_ptr->o_max; i++)
201 object_type *o_ptr = &floor_ptr->o_list[i];
202 object_kind *k_ptr = &k_info[o_ptr->k_idx];
205 if (!OBJECT_IS_VALID(o_ptr)) continue;
207 /* Skip known objects */
208 if (object_is_known(o_ptr))
211 if (o_ptr->marked & OM_TOUCHED) continue;
214 /* Skip pseudo-known objects */
215 if (o_ptr->ident & IDENT_SENSE) continue;
218 if (object_is_ego(o_ptr))
220 ego_item_type *e_ptr = &e_info[o_ptr->name2];
222 delta += e_ptr->rating * base;
226 if (object_is_artifact(o_ptr))
228 PRICE cost = object_value_real(o_ptr);
231 if (cost > 10000L) delta += 10 * base;
232 if (cost > 50000L) delta += 10 * base;
233 if (cost > 100000L) delta += 10 * base;
235 /* Special feeling */
236 if (!preserve_mode) return 1;
239 if (o_ptr->tval == TV_DRAG_ARMOR) delta += 30 * base;
240 if (o_ptr->tval == TV_SHIELD && o_ptr->sval == SV_DRAGON_SHIELD) delta += 5 * base;
241 if (o_ptr->tval == TV_GLOVES && o_ptr->sval == SV_SET_OF_DRAGON_GLOVES) delta += 5 * base;
242 if (o_ptr->tval == TV_BOOTS && o_ptr->sval == SV_PAIR_OF_DRAGON_GREAVE) delta += 5 * base;
243 if (o_ptr->tval == TV_HELM && o_ptr->sval == SV_DRAGON_HELM) delta += 5 * base;
244 if (o_ptr->tval == TV_RING && o_ptr->sval == SV_RING_SPEED && !object_is_cursed(o_ptr)) delta += 25 * base;
245 if (o_ptr->tval == TV_RING && o_ptr->sval == SV_RING_LORDLY && !object_is_cursed(o_ptr)) delta += 15 * base;
246 if (o_ptr->tval == TV_AMULET && o_ptr->sval == SV_AMULET_THE_MAGI && !object_is_cursed(o_ptr)) delta += 15 * base;
248 /* Out-of-depth objects */
249 if (!object_is_cursed(o_ptr) && !object_is_broken(o_ptr) && k_ptr->level > floor_ptr->dun_level)
251 /* Rating increase */
252 delta += (k_ptr->level - floor_ptr->dun_level) * base;
255 rating += RATING_BOOST(delta);
259 if (rating > RATING_BOOST(1000)) return 2;
260 if (rating > RATING_BOOST(800)) return 3;
261 if (rating > RATING_BOOST(600)) return 4;
262 if (rating > RATING_BOOST(400)) return 5;
263 if (rating > RATING_BOOST(300)) return 6;
264 if (rating > RATING_BOOST(200)) return 7;
265 if (rating > RATING_BOOST(100)) return 8;
266 if (rating > RATING_BOOST(0)) return 9;
272 * @brief ダンジョンの雰囲気を更新し、変化があった場合メッセージを表示する
273 * / Update dungeon feeling, and announce it if changed
276 void update_dungeon_feeling(player_type *subject_ptr, floor_type *floor_ptr)
282 /* No feeling on the surface */
283 if (!floor_ptr->dun_level) return;
285 /* No feeling in the arena */
286 if (subject_ptr->phase_out) return;
288 /* Extract delay time */
289 delay = MAX(10, 150 - subject_ptr->skill_fos) * (150 - floor_ptr->dun_level) * TURNS_PER_TICK / 100;
291 /* Not yet felt anything */
292 if (current_world_ptr->game_turn < subject_ptr->feeling_turn + delay && !cheat_xtra) return;
294 /* Extract quest number (if any) */
295 quest_num = quest_number(floor_ptr->dun_level);
297 /* No feeling in a quest */
299 (is_fixed_quest_idx(quest_num) &&
300 !((quest_num == QUEST_OBERON) || (quest_num == QUEST_SERPENT) ||
301 !(quest[quest_num].flags & QUEST_FLAG_PRESET)))) return;
304 /* Get new dungeon feeling */
305 new_feeling = get_dungeon_feeling(floor_ptr);
307 /* Remember last time updated */
308 subject_ptr->feeling_turn = current_world_ptr->game_turn;
311 if (subject_ptr->feeling == new_feeling) return;
313 /* Dungeon feeling is changed */
314 subject_ptr->feeling = new_feeling;
316 /* Announce feeling */
317 do_cmd_feeling(subject_ptr);
319 select_floor_music(subject_ptr);
321 /* Update the level indicator */
322 subject_ptr->redraw |= (PR_DEPTH);
324 if (disturb_minor) disturb(subject_ptr, FALSE, FALSE);
329 * Glow deep lava and building entrances in the floor
331 void glow_deep_lava_and_bldg(floor_type *floor_ptr)
333 POSITION y, x, yy, xx;
337 /* Not in the darkness dungeon */
338 if (d_info[p_ptr->dungeon_idx].flags1 & DF1_DARKNESS) return;
340 for (y = 0; y < floor_ptr->height; y++)
342 for (x = 0; x < floor_ptr->width; x++)
344 g_ptr = &floor_ptr->grid_array[y][x];
346 /* Feature code (applying "mimic" field) */
348 if (have_flag(f_info[get_feat_mimic(g_ptr)].flags, FF_GLOW))
350 for (i = 0; i < 9; i++)
354 if (!in_bounds2(floor_ptr, yy, xx)) continue;
355 floor_ptr->grid_array[yy][xx].info |= CAVE_GLOW;
361 /* Update the view and lite */
362 p_ptr->update |= (PU_VIEW | PU_LITE | PU_MON_LITE);
364 p_ptr->redraw |= (PR_MAP);
368 * Actually erase the entire "lite" array, redrawing every grid
370 void forget_lite(floor_type *floor_ptr)
376 if (!floor_ptr->lite_n) return;
379 for (i = 0; i < floor_ptr->lite_n; i++)
381 y = floor_ptr->lite_y[i];
382 x = floor_ptr->lite_x[i];
384 /* Forget "LITE" flag */
385 floor_ptr->grid_array[y][x].info &= ~(CAVE_LITE);
387 /* lite_spot(y, x); Perhaps don't need? */
391 floor_ptr->lite_n = 0;
397 * Update the set of grids "illuminated" by the player's lite.
399 * This routine needs to use the results of "update_view()"
401 * Note that "blindness" does NOT affect "torch lite". Be careful!
403 * We optimize most lites (all non-artifact lites) by using "obvious"
404 * facts about the results of "small" lite radius, and we attempt to
405 * list the "nearby" grids before the more "distant" ones in the
406 * array of torch-lit grids.
408 * We assume that "radius zero" lite is in fact no lite at all.
410 * Torch Lantern Artifacts
420 void update_lite(player_type *subject_ptr, floor_type *floor_ptr)
423 POSITION x, y, min_x, max_x, min_y, max_y;
424 POSITION p = subject_ptr->cur_lite;
427 /*** Special case ***/
430 /* Hack -- Player has no lite */
433 /* Forget the old lite */
434 /* forget_lite(); Perhaps don't need? */
436 /* Add it to later visual update */
437 cave_redraw_later(floor_ptr, &floor_ptr->grid_array[subject_ptr->y][subject_ptr->x], subject_ptr->y, subject_ptr->x);
441 /*** Save the old "lite" grids for later ***/
444 for (i = 0; i < floor_ptr->lite_n; i++)
446 y = floor_ptr->lite_y[i];
447 x = floor_ptr->lite_x[i];
449 /* Mark the grid as not "lite" */
450 floor_ptr->grid_array[y][x].info &= ~(CAVE_LITE);
452 /* Mark the grid as "seen" */
453 floor_ptr->grid_array[y][x].info |= (CAVE_TEMP);
455 /* Add it to the "seen" set */
456 tmp_pos.y[tmp_pos.n] = y;
457 tmp_pos.x[tmp_pos.n] = x;
462 floor_ptr->lite_n = 0;
465 /*** Collect the new "lite" grids ***/
467 /* Radius 1 -- torch radius */
471 cave_lite_hack(floor_ptr, subject_ptr->y, subject_ptr->x);
474 cave_lite_hack(floor_ptr, subject_ptr->y + 1, subject_ptr->x);
475 cave_lite_hack(floor_ptr, subject_ptr->y - 1, subject_ptr->x);
476 cave_lite_hack(floor_ptr, subject_ptr->y, subject_ptr->x + 1);
477 cave_lite_hack(floor_ptr, subject_ptr->y, subject_ptr->x - 1);
480 cave_lite_hack(floor_ptr, subject_ptr->y + 1, subject_ptr->x + 1);
481 cave_lite_hack(floor_ptr, subject_ptr->y + 1, subject_ptr->x - 1);
482 cave_lite_hack(floor_ptr, subject_ptr->y - 1, subject_ptr->x + 1);
483 cave_lite_hack(floor_ptr, subject_ptr->y - 1, subject_ptr->x - 1);
486 /* Radius 2 -- lantern radius */
489 /* South of the player */
490 if (cave_los_bold(floor_ptr, subject_ptr->y + 1, subject_ptr->x))
492 cave_lite_hack(floor_ptr, subject_ptr->y + 2, subject_ptr->x);
493 cave_lite_hack(floor_ptr, subject_ptr->y + 2, subject_ptr->x + 1);
494 cave_lite_hack(floor_ptr, subject_ptr->y + 2, subject_ptr->x - 1);
497 /* North of the player */
498 if (cave_los_bold(floor_ptr, subject_ptr->y - 1, subject_ptr->x))
500 cave_lite_hack(floor_ptr, subject_ptr->y - 2, subject_ptr->x);
501 cave_lite_hack(floor_ptr, subject_ptr->y - 2, subject_ptr->x + 1);
502 cave_lite_hack(floor_ptr, subject_ptr->y - 2, subject_ptr->x - 1);
505 /* East of the player */
506 if (cave_los_bold(floor_ptr, subject_ptr->y, subject_ptr->x + 1))
508 cave_lite_hack(floor_ptr, subject_ptr->y, subject_ptr->x + 2);
509 cave_lite_hack(floor_ptr, subject_ptr->y + 1, subject_ptr->x + 2);
510 cave_lite_hack(floor_ptr, subject_ptr->y - 1, subject_ptr->x + 2);
513 /* West of the player */
514 if (cave_los_bold(floor_ptr, subject_ptr->y, subject_ptr->x - 1))
516 cave_lite_hack(floor_ptr, subject_ptr->y, subject_ptr->x - 2);
517 cave_lite_hack(floor_ptr, subject_ptr->y + 1, subject_ptr->x - 2);
518 cave_lite_hack(floor_ptr, subject_ptr->y - 1, subject_ptr->x - 2);
522 /* Radius 3+ -- artifact radius */
527 /* Paranoia -- see "LITE_MAX" */
530 /* South-East of the player */
531 if (cave_los_bold(floor_ptr, subject_ptr->y + 1, subject_ptr->x + 1))
533 cave_lite_hack(floor_ptr, subject_ptr->y + 2, subject_ptr->x + 2);
536 /* South-West of the player */
537 if (cave_los_bold(floor_ptr, subject_ptr->y + 1, subject_ptr->x - 1))
539 cave_lite_hack(floor_ptr, subject_ptr->y + 2, subject_ptr->x - 2);
542 /* North-East of the player */
543 if (cave_los_bold(floor_ptr, subject_ptr->y - 1, subject_ptr->x + 1))
545 cave_lite_hack(floor_ptr, subject_ptr->y - 2, subject_ptr->x + 2);
548 /* North-West of the player */
549 if (cave_los_bold(floor_ptr, subject_ptr->y - 1, subject_ptr->x - 1))
551 cave_lite_hack(floor_ptr, subject_ptr->y - 2, subject_ptr->x - 2);
555 min_y = subject_ptr->y - p;
556 if (min_y < 0) min_y = 0;
559 max_y = subject_ptr->y + p;
560 if (max_y > floor_ptr->height - 1) max_y = floor_ptr->height - 1;
563 min_x = subject_ptr->x - p;
564 if (min_x < 0) min_x = 0;
567 max_x = subject_ptr->x + p;
568 if (max_x > floor_ptr->width - 1) max_x = floor_ptr->width - 1;
570 /* Scan the maximal box */
571 for (y = min_y; y <= max_y; y++)
573 for (x = min_x; x <= max_x; x++)
575 int dy = (subject_ptr->y > y) ? (subject_ptr->y - y) : (y - subject_ptr->y);
576 int dx = (subject_ptr->x > x) ? (subject_ptr->x - x) : (x - subject_ptr->x);
578 /* Skip the "central" grids (above) */
579 if ((dy <= 2) && (dx <= 2)) continue;
581 /* Hack -- approximate the distance */
582 d = (dy > dx) ? (dy + (dx >> 1)) : (dx + (dy >> 1));
584 /* Skip distant grids */
587 /* Viewable, nearby, grids get "torch lit" */
588 if (floor_ptr->grid_array[y][x].info & CAVE_VIEW)
590 /* This grid is "torch lit" */
591 cave_lite_hack(floor_ptr, y, x);
598 /*** Complete the algorithm ***/
600 /* Draw the new grids */
601 for (i = 0; i < floor_ptr->lite_n; i++)
603 y = floor_ptr->lite_y[i];
604 x = floor_ptr->lite_x[i];
606 g_ptr = &floor_ptr->grid_array[y][x];
608 /* Update fresh grids */
609 if (g_ptr->info & (CAVE_TEMP)) continue;
611 /* Add it to later visual update */
612 cave_note_and_redraw_later(floor_ptr, g_ptr, y, x);
616 for (i = 0; i < tmp_pos.n; i++)
621 g_ptr = &floor_ptr->grid_array[y][x];
623 /* No longer in the array */
624 g_ptr->info &= ~(CAVE_TEMP);
626 /* Update stale grids */
627 if (g_ptr->info & (CAVE_LITE)) continue;
629 /* Add it to later visual update */
630 cave_redraw_later(floor_ptr, g_ptr, y, x);
636 /* Mega-Hack -- Visual update later */
637 subject_ptr->update |= (PU_DELAY_VIS);
642 * Clear the viewable space
644 void forget_view(floor_type *floor_ptr)
651 if (!floor_ptr->view_n) return;
654 for (i = 0; i < floor_ptr->view_n; i++)
656 POSITION y = floor_ptr->view_y[i];
657 POSITION x = floor_ptr->view_x[i];
658 g_ptr = &floor_ptr->grid_array[y][x];
660 /* Forget that the grid is viewable */
661 g_ptr->info &= ~(CAVE_VIEW);
663 /* if (!panel_contains(y, x)) continue; */
665 /* Update the screen */
666 /* lite_spot(y, x); Perhaps don't need? */
670 floor_ptr->view_n = 0;
676 * Helper function for "update_view()" below
678 * We are checking the "viewability" of grid (y,x) by the player.
680 * This function assumes that (y,x) is legal (i.e. on the map).
682 * Grid (y1,x1) is on the "diagonal" between (p_ptr->y,p_ptr->x) and (y,x)
683 * Grid (y2,x2) is "adjacent", also between (p_ptr->y,p_ptr->x) and (y,x).
685 * Note that we are using the "CAVE_XTRA" field for marking grids as
686 * "easily viewable". This bit is cleared at the end of "update_view()".
688 * This function adds (y,x) to the "viewable set" if necessary.
690 * This function now returns "TRUE" if vision is "blocked" by grid (y,x).
692 static bool update_view_aux(floor_type *floor_ptr, POSITION y, POSITION x, POSITION y1, POSITION x1, POSITION y2, POSITION x2)
694 bool f1, f2, v1, v2, z1, z2, wall;
701 /* Access the grids */
702 g1_c_ptr = &floor_ptr->grid_array[y1][x1];
703 g2_c_ptr = &floor_ptr->grid_array[y2][x2];
706 /* Check for walls */
707 f1 = (cave_los_grid(g1_c_ptr));
708 f2 = (cave_los_grid(g2_c_ptr));
710 /* Totally blocked by physical walls */
711 if (!f1 && !f2) return (TRUE);
714 /* Check for visibility */
715 v1 = (f1 && (g1_c_ptr->info & (CAVE_VIEW)));
716 v2 = (f2 && (g2_c_ptr->info & (CAVE_VIEW)));
718 /* Totally blocked by "unviewable neighbors" */
719 if (!v1 && !v2) return (TRUE);
721 g_ptr = &floor_ptr->grid_array[y][x];
724 /* Check for walls */
725 wall = (!cave_los_grid(g_ptr));
728 /* Check the "ease" of visibility */
729 z1 = (v1 && (g1_c_ptr->info & (CAVE_XTRA)));
730 z2 = (v2 && (g2_c_ptr->info & (CAVE_XTRA)));
732 /* Hack -- "easy" plus "easy" yields "easy" */
735 g_ptr->info |= (CAVE_XTRA);
737 cave_view_hack(floor_ptr, g_ptr, y, x);
742 /* Hack -- primary "easy" yields "viewed" */
745 cave_view_hack(floor_ptr, g_ptr, y, x);
750 /* Hack -- "view" plus "view" yields "view" */
753 /* g_ptr->info |= (CAVE_XTRA); */
755 cave_view_hack(floor_ptr, g_ptr, y, x);
761 /* Mega-Hack -- the "los()" function works poorly on walls */
764 cave_view_hack(floor_ptr, g_ptr, y, x);
770 /* Hack -- check line of sight */
771 if (los(floor_ptr, p_ptr->y, p_ptr->x, y, x))
773 cave_view_hack(floor_ptr, g_ptr, y, x);
779 /* Assume no line of sight. */
785 * Calculate the viewable space
787 * 1: Process the player
788 * 1a: The player is always (easily) viewable
789 * 2: Process the diagonals
790 * 2a: The diagonals are (easily) viewable up to the first wall
791 * 2b: But never go more than 2/3 of the "full" distance
792 * 3: Process the main axes
793 * 3a: The main axes are (easily) viewable up to the first wall
794 * 3b: But never go more than the "full" distance
795 * 4: Process sequential "strips" in each of the eight octants
796 * 4a: Each strip runs along the previous strip
797 * 4b: The main axes are "previous" to the first strip
798 * 4c: Process both "sides" of each "direction" of each strip
799 * 4c1: Each side aborts as soon as possible
800 * 4c2: Each side tells the next strip how far it has to check
802 * Note that the octant processing involves some pretty interesting
803 * observations involving when a grid might possibly be viewable from
804 * a given grid, and on the order in which the strips are processed.
806 * Note the use of the mathematical facts shown below, which derive
807 * from the fact that (1 < sqrt(2) < 1.5), and that the length of the
808 * hypotenuse of a right triangle is primarily determined by the length
809 * of the longest side, when one side is small, and is strictly less
810 * than one-and-a-half times as long as the longest side when both of
811 * the sides are large.
813 * if (manhatten(dy,dx) < R) then (hypot(dy,dx) < R)
814 * if (manhatten(dy,dx) > R*3/2) then (hypot(dy,dx) > R)
816 * hypot(dy,dx) is approximated by (dx+dy+MAX(dx,dy)) / 2
818 * These observations are important because the calculation of the actual
819 * value of "hypot(dx,dy)" is extremely expensive, involving square roots,
820 * while for small values (up to about 20 or so), the approximations above
821 * are correct to within an error of at most one grid or so.
823 * Observe the use of "full" and "over" in the code below, and the use of
824 * the specialized calculation involving "limit", all of which derive from
825 * the observations given above. Basically, we note that the "circle" of
826 * view is completely contained in an "octagon" whose bounds are easy to
827 * determine, and that only a few steps are needed to derive the actual
828 * bounds of the circle given the bounds of the octagon.
830 * Note that by skipping all the grids in the corners of the octagon, we
831 * place an upper limit on the number of grids in the field of view, given
832 * that "full" is never more than 20. Of the 1681 grids in the "square" of
833 * view, only about 1475 of these are in the "octagon" of view, and even
834 * fewer are in the "circle" of view, so 1500 or 1536 is more than enough
835 * entries to completely contain the actual field of view.
837 * Note also the care taken to prevent "running off the map". The use of
838 * explicit checks on the "validity" of the "diagonal", and the fact that
839 * the loops are never allowed to "leave" the map, lets "update_view_aux()"
840 * use the optimized "cave_los_bold()" macro, and to avoid the overhead
841 * of multiple checks on the validity of grids.
843 * Note the "optimizations" involving the "se","sw","ne","nw","es","en",
844 * "ws","wn" variables. They work like this: While travelling down the
845 * south-bound strip just to the east of the main south axis, as soon as
846 * we get to a grid which does not "transmit" viewing, if all of the strips
847 * preceding us (in this case, just the main axis) had terminated at or before
848 * the same point, then we can stop, and reset the "max distance" to ourself.
849 * So, each strip (named by major axis plus offset, thus "se" in this case)
850 * maintains a "blockage" variable, initialized during the main axis step,
851 * and checks it whenever a blockage is observed. After processing each
852 * strip as far as the previous strip told us to process, the next strip is
853 * told not to go farther than the current strip's farthest viewable grid,
854 * unless open space is still available. This uses the "k" variable.
856 * Note the use of "inline" macros for efficiency. The "cave_los_grid()"
857 * macro is a replacement for "cave_los_bold()" which takes a pointer to
858 * a grid instead of its location. The "cave_view_hack()" macro is a
859 * chunk of code which adds the given location to the "view" array if it
860 * is not already there, using both the actual location and a pointer to
861 * the grid. See above.
863 * By the way, the purpose of this code is to reduce the dependancy on the
864 * "los()" function which is slow, and, in some cases, not very accurate.
866 * It is very possible that I am the only person who fully understands this
867 * function, and for that I am truly sorry, but efficiency was very important
868 * and the "simple" version of this function was just not fast enough. I am
869 * more than willing to replace this function with a simpler one, if it is
870 * equally efficient, and especially willing if the new function happens to
871 * derive "reverse-line-of-sight" at the same time, since currently monsters
872 * just use an optimized hack of "you see me, so I see you", and then use the
873 * actual "projectable()" function to check spell attacks.
875 void update_view(player_type *subject_ptr, floor_type *floor_ptr)
880 int se, sw, ne, nw, es, en, ws, wn;
884 POSITION y_max = floor_ptr->height - 1;
885 POSITION x_max = floor_ptr->width - 1;
892 if (view_reduce_view && !floor_ptr->dun_level)
894 /* Full radius (10) */
895 full = MAX_SIGHT / 2;
897 /* Octagon factor (15) */
898 over = MAX_SIGHT * 3 / 4;
904 /* Full radius (20) */
907 /* Octagon factor (30) */
908 over = MAX_SIGHT * 3 / 2;
912 /*** Step 0 -- Begin ***/
914 /* Save the old "view" grids for later */
915 for (n = 0; n < floor_ptr->view_n; n++)
917 y = floor_ptr->view_y[n];
918 x = floor_ptr->view_x[n];
919 g_ptr = &floor_ptr->grid_array[y][x];
921 /* Mark the grid as not in "view" */
922 g_ptr->info &= ~(CAVE_VIEW);
924 /* Mark the grid as "seen" */
925 g_ptr->info |= (CAVE_TEMP);
927 /* Add it to the "seen" set */
928 tmp_pos.y[tmp_pos.n] = y;
929 tmp_pos.x[tmp_pos.n] = x;
933 /* Start over with the "view" array */
934 floor_ptr->view_n = 0;
936 /*** Step 1 -- adjacent grids ***/
938 /* Now start on the player */
941 g_ptr = &floor_ptr->grid_array[y][x];
943 /* Assume the player grid is easily viewable */
944 g_ptr->info |= (CAVE_XTRA);
946 /* Assume the player grid is viewable */
947 cave_view_hack(floor_ptr, g_ptr, y, x);
950 /*** Step 2 -- Major Diagonals ***/
955 /* Scan south-east */
956 for (d = 1; d <= z; d++)
958 g_ptr = &floor_ptr->grid_array[y + d][x + d];
959 g_ptr->info |= (CAVE_XTRA);
960 cave_view_hack(floor_ptr, g_ptr, y + d, x + d);
961 if (!cave_los_grid(g_ptr)) break;
964 /* Scan south-west */
965 for (d = 1; d <= z; d++)
967 g_ptr = &floor_ptr->grid_array[y + d][x - d];
968 g_ptr->info |= (CAVE_XTRA);
969 cave_view_hack(floor_ptr, g_ptr, y + d, x - d);
970 if (!cave_los_grid(g_ptr)) break;
973 /* Scan north-east */
974 for (d = 1; d <= z; d++)
976 g_ptr = &floor_ptr->grid_array[y - d][x + d];
977 g_ptr->info |= (CAVE_XTRA);
978 cave_view_hack(floor_ptr, g_ptr, y - d, x + d);
979 if (!cave_los_grid(g_ptr)) break;
982 /* Scan north-west */
983 for (d = 1; d <= z; d++)
985 g_ptr = &floor_ptr->grid_array[y - d][x - d];
986 g_ptr->info |= (CAVE_XTRA);
987 cave_view_hack(floor_ptr, g_ptr, y - d, x - d);
988 if (!cave_los_grid(g_ptr)) break;
991 /*** Step 3 -- major axes ***/
994 for (d = 1; d <= full; d++)
996 g_ptr = &floor_ptr->grid_array[y + d][x];
997 g_ptr->info |= (CAVE_XTRA);
998 cave_view_hack(floor_ptr, g_ptr, y + d, x);
999 if (!cave_los_grid(g_ptr)) break;
1002 /* Initialize the "south strips" */
1006 for (d = 1; d <= full; d++)
1008 g_ptr = &floor_ptr->grid_array[y - d][x];
1009 g_ptr->info |= (CAVE_XTRA);
1010 cave_view_hack(floor_ptr, g_ptr, y - d, x);
1011 if (!cave_los_grid(g_ptr)) break;
1014 /* Initialize the "north strips" */
1018 for (d = 1; d <= full; d++)
1020 g_ptr = &floor_ptr->grid_array[y][x + d];
1021 g_ptr->info |= (CAVE_XTRA);
1022 cave_view_hack(floor_ptr, g_ptr, y, x + d);
1023 if (!cave_los_grid(g_ptr)) break;
1026 /* Initialize the "east strips" */
1030 for (d = 1; d <= full; d++)
1032 g_ptr = &floor_ptr->grid_array[y][x - d];
1033 g_ptr->info |= (CAVE_XTRA);
1034 cave_view_hack(floor_ptr, g_ptr, y, x - d);
1035 if (!cave_los_grid(g_ptr)) break;
1038 /* Initialize the "west strips" */
1042 /*** Step 4 -- Divide each "octant" into "strips" ***/
1044 /* Now check each "diagonal" (in parallel) */
1045 for (n = 1; n <= over / 2; n++)
1047 POSITION ypn, ymn, xpn, xmn;
1049 /* Acquire the "bounds" of the maximal circle */
1051 if (z > full - n) z = full - n;
1052 while ((z + n + (n >> 1)) > full) z--;
1055 /* Access the four diagonal grids */
1065 /* Maximum distance */
1066 m = MIN(z, y_max - ypn);
1069 if ((xpn <= x_max) && (n < se))
1072 for (k = n, d = 1; d <= m; d++)
1074 /* Check grid "d" in strip "n", notice "blockage" */
1075 if (update_view_aux(subject_ptr->current_floor_ptr, ypn + d, xpn, ypn + d - 1, xpn - 1, ypn + d - 1, xpn))
1077 if (n + d >= se) break;
1080 /* Track most distant "non-blockage" */
1087 /* Limit the next strip */
1092 if ((xmn >= 0) && (n < sw))
1095 for (k = n, d = 1; d <= m; d++)
1097 /* Check grid "d" in strip "n", notice "blockage" */
1098 if (update_view_aux(subject_ptr->current_floor_ptr, ypn + d, xmn, ypn + d - 1, xmn + 1, ypn + d - 1, xmn))
1100 if (n + d >= sw) break;
1103 /* Track most distant "non-blockage" */
1110 /* Limit the next strip */
1119 /* Maximum distance */
1123 if ((xpn <= x_max) && (n < ne))
1126 for (k = n, d = 1; d <= m; d++)
1128 /* Check grid "d" in strip "n", notice "blockage" */
1129 if (update_view_aux(subject_ptr->current_floor_ptr, ymn - d, xpn, ymn - d + 1, xpn - 1, ymn - d + 1, xpn))
1131 if (n + d >= ne) break;
1134 /* Track most distant "non-blockage" */
1141 /* Limit the next strip */
1146 if ((xmn >= 0) && (n < nw))
1149 for (k = n, d = 1; d <= m; d++)
1151 /* Check grid "d" in strip "n", notice "blockage" */
1152 if (update_view_aux(subject_ptr->current_floor_ptr, ymn - d, xmn, ymn - d + 1, xmn + 1, ymn - d + 1, xmn))
1154 if (n + d >= nw) break;
1157 /* Track most distant "non-blockage" */
1164 /* Limit the next strip */
1173 /* Maximum distance */
1174 m = MIN(z, x_max - xpn);
1177 if ((ypn <= x_max) && (n < es))
1180 for (k = n, d = 1; d <= m; d++)
1182 /* Check grid "d" in strip "n", notice "blockage" */
1183 if (update_view_aux(subject_ptr->current_floor_ptr, ypn, xpn + d, ypn - 1, xpn + d - 1, ypn, xpn + d - 1))
1185 if (n + d >= es) break;
1188 /* Track most distant "non-blockage" */
1195 /* Limit the next strip */
1200 if ((ymn >= 0) && (n < en))
1203 for (k = n, d = 1; d <= m; d++)
1205 /* Check grid "d" in strip "n", notice "blockage" */
1206 if (update_view_aux(subject_ptr->current_floor_ptr, ymn, xpn + d, ymn + 1, xpn + d - 1, ymn, xpn + d - 1))
1208 if (n + d >= en) break;
1211 /* Track most distant "non-blockage" */
1218 /* Limit the next strip */
1227 /* Maximum distance */
1231 if ((ypn <= y_max) && (n < ws))
1234 for (k = n, d = 1; d <= m; d++)
1236 /* Check grid "d" in strip "n", notice "blockage" */
1237 if (update_view_aux(subject_ptr->current_floor_ptr, ypn, xmn - d, ypn - 1, xmn - d + 1, ypn, xmn - d + 1))
1239 if (n + d >= ws) break;
1242 /* Track most distant "non-blockage" */
1249 /* Limit the next strip */
1254 if ((ymn >= 0) && (n < wn))
1257 for (k = n, d = 1; d <= m; d++)
1259 /* Check grid "d" in strip "n", notice "blockage" */
1260 if (update_view_aux(subject_ptr->current_floor_ptr, ymn, xmn - d, ymn + 1, xmn - d + 1, ymn, xmn - d + 1))
1262 if (n + d >= wn) break;
1265 /* Track most distant "non-blockage" */
1272 /* Limit the next strip */
1279 /*** Step 5 -- Complete the algorithm ***/
1281 /* Update all the new grids */
1282 for (n = 0; n < floor_ptr->view_n; n++)
1284 y = floor_ptr->view_y[n];
1285 x = floor_ptr->view_x[n];
1286 g_ptr = &floor_ptr->grid_array[y][x];
1288 /* Clear the "CAVE_XTRA" flag */
1289 g_ptr->info &= ~(CAVE_XTRA);
1291 /* Update only newly viewed grids */
1292 if (g_ptr->info & (CAVE_TEMP)) continue;
1294 /* Add it to later visual update */
1295 cave_note_and_redraw_later(floor_ptr, g_ptr, y, x);
1298 /* Wipe the old grids, update as needed */
1299 for (n = 0; n < tmp_pos.n; n++)
1303 g_ptr = &floor_ptr->grid_array[y][x];
1305 /* No longer in the array */
1306 g_ptr->info &= ~(CAVE_TEMP);
1308 /* Update only non-viewable grids */
1309 if (g_ptr->info & (CAVE_VIEW)) continue;
1311 /* Add it to later visual update */
1312 cave_redraw_later(floor_ptr, g_ptr, y, x);
1318 /* Mega-Hack -- Visual update later */
1319 subject_ptr->update |= (PU_DELAY_VIS);
1324 * @brief モンスターによる光量状態更新 / Add a square to the changes array
1325 * @param subject_ptr 主観となるクリーチャーの参照ポインタ
1329 static void mon_lite_hack(player_type *subject_ptr, POSITION y, POSITION x)
1335 /* We trust this grid is in bounds */
1336 /* if (!in_bounds2(y, x)) return; */
1338 g_ptr = &subject_ptr->current_floor_ptr->grid_array[y][x];
1340 /* Want a unlit square in view of the player */
1341 if ((g_ptr->info & (CAVE_MNLT | CAVE_VIEW)) != CAVE_VIEW) return;
1343 if (!cave_los_grid(g_ptr))
1345 /* Hack -- Prevent monster lite leakage in walls */
1347 /* Horizontal walls between player and a monster */
1348 if (((y < subject_ptr->y) && (y > mon_fy)) || ((y > subject_ptr->y) && (y < mon_fy)))
1350 dpf = subject_ptr->y - mon_fy;
1352 midpoint = mon_fx + ((subject_ptr->x - mon_fx) * ABS(d)) / ABS(dpf);
1354 /* Only first wall viewed from mid-x is lit */
1357 if (!cave_los_bold(subject_ptr->current_floor_ptr, y, x + 1)) return;
1359 else if (x > midpoint)
1361 if (!cave_los_bold(subject_ptr->current_floor_ptr, y, x - 1)) return;
1364 /* Hack XXX XXX - Is it a wall and monster not in LOS? */
1365 else if (mon_invis) return;
1368 /* Vertical walls between player and a monster */
1369 if (((x < subject_ptr->x) && (x > mon_fx)) || ((x > subject_ptr->x) && (x < mon_fx)))
1371 dpf = subject_ptr->x - mon_fx;
1373 midpoint = mon_fy + ((subject_ptr->y - mon_fy) * ABS(d)) / ABS(dpf);
1375 /* Only first wall viewed from mid-y is lit */
1378 if (!cave_los_bold(subject_ptr->current_floor_ptr, y + 1, x)) return;
1380 else if (y > midpoint)
1382 if (!cave_los_bold(subject_ptr->current_floor_ptr, y - 1, x)) return;
1385 /* Hack XXX XXX - Is it a wall and monster not in LOS? */
1386 else if (mon_invis) return;
1390 /* We trust tmp_pos.n does not exceed TEMP_MAX */
1393 if (!(g_ptr->info & CAVE_MNDK))
1395 /* Save this square */
1396 tmp_pos.x[tmp_pos.n] = x;
1397 tmp_pos.y[tmp_pos.n] = y;
1404 /* No longer dark */
1405 g_ptr->info &= ~(CAVE_MNDK);
1409 g_ptr->info |= CAVE_MNLT;
1414 * Add a square to the changes array
1416 static void mon_dark_hack(player_type *subject_ptr, POSITION y, POSITION x)
1419 int midpoint, dpf, d;
1421 /* We trust this grid is in bounds */
1422 /* if (!in_bounds2(y, x)) return; */
1424 g_ptr = &subject_ptr->current_floor_ptr->grid_array[y][x];
1426 /* Want a unlit and undarkened square in view of the player */
1427 if ((g_ptr->info & (CAVE_LITE | CAVE_MNLT | CAVE_MNDK | CAVE_VIEW)) != CAVE_VIEW) return;
1429 if (!cave_los_grid(g_ptr) && !cave_have_flag_grid(g_ptr, FF_PROJECT))
1431 /* Hack -- Prevent monster dark lite leakage in walls */
1433 /* Horizontal walls between player and a monster */
1434 if (((y < subject_ptr->y) && (y > mon_fy)) || ((y > subject_ptr->y) && (y < mon_fy)))
1436 dpf = subject_ptr->y - mon_fy;
1438 midpoint = mon_fx + ((subject_ptr->x - mon_fx) * ABS(d)) / ABS(dpf);
1440 /* Only first wall viewed from mid-x is lit */
1443 if (!cave_los_bold(subject_ptr->current_floor_ptr, y, x + 1) && !cave_have_flag_bold(subject_ptr->current_floor_ptr, y, x + 1, FF_PROJECT)) return;
1445 else if (x > midpoint)
1447 if (!cave_los_bold(subject_ptr->current_floor_ptr, y, x - 1) && !cave_have_flag_bold(subject_ptr->current_floor_ptr, y, x - 1, FF_PROJECT)) return;
1450 /* Hack XXX XXX - Is it a wall and monster not in LOS? */
1451 else if (mon_invis) return;
1454 /* Vertical walls between player and a monster */
1455 if (((x < subject_ptr->x) && (x > mon_fx)) || ((x > subject_ptr->x) && (x < mon_fx)))
1457 dpf = subject_ptr->x - mon_fx;
1459 midpoint = mon_fy + ((subject_ptr->y - mon_fy) * ABS(d)) / ABS(dpf);
1461 /* Only first wall viewed from mid-y is lit */
1464 if (!cave_los_bold(subject_ptr->current_floor_ptr, y + 1, x) && !cave_have_flag_bold(subject_ptr->current_floor_ptr, y + 1, x, FF_PROJECT)) return;
1466 else if (y > midpoint)
1468 if (!cave_los_bold(subject_ptr->current_floor_ptr, y - 1, x) && !cave_have_flag_bold(subject_ptr->current_floor_ptr, y - 1, x, FF_PROJECT)) return;
1471 /* Hack XXX XXX - Is it a wall and monster not in LOS? */
1472 else if (mon_invis) return;
1476 /* We trust tmp_pos.n does not exceed TEMP_MAX */
1478 /* Save this square */
1479 tmp_pos.x[tmp_pos.n] = x;
1480 tmp_pos.y[tmp_pos.n] = y;
1484 g_ptr->info |= CAVE_MNDK;
1488 * Update squares illuminated or darkened by monsters.
1490 * Hack - use the CAVE_ROOM flag (renamed to be CAVE_MNLT) to
1491 * denote squares illuminated by monsters.
1493 * The CAVE_TEMP and CAVE_XTRA flag are used to store the state during the
1494 * updating. Only squares in view of the player, whos state
1495 * changes are drawn via lite_spot().
1497 void update_mon_lite(player_type *subject_ptr, floor_type *floor_ptr)
1503 void(*add_mon_lite)(player_type *, POSITION, POSITION);
1508 /* Non-Ninja player in the darkness */
1509 int dis_lim = ((d_info[subject_ptr->dungeon_idx].flags1 & DF1_DARKNESS) && !subject_ptr->see_nocto) ?
1510 (MAX_SIGHT / 2 + 1) : (MAX_SIGHT + 3);
1512 /* Clear all monster lit squares */
1513 for (i = 0; i < floor_ptr->mon_lite_n; i++)
1516 g_ptr = &floor_ptr->grid_array[floor_ptr->mon_lite_y[i]][floor_ptr->mon_lite_x[i]];
1518 /* Set temp or xtra flag */
1519 g_ptr->info |= (g_ptr->info & CAVE_MNLT) ? CAVE_TEMP : CAVE_XTRA;
1521 /* Clear monster illumination flag */
1522 g_ptr->info &= ~(CAVE_MNLT | CAVE_MNDK);
1525 /* Empty temp list of new squares to lite up */
1528 /* If a monster stops time, don't process */
1529 if (!current_world_ptr->timewalk_m_idx)
1531 monster_type *m_ptr;
1532 monster_race *r_ptr;
1534 /* Loop through monsters, adding newly lit squares to changes list */
1535 for (i = 1; i < floor_ptr->m_max; i++)
1537 m_ptr = &floor_ptr->m_list[i];
1538 r_ptr = &r_info[m_ptr->r_idx];
1539 if (!monster_is_valid(m_ptr)) continue;
1541 /* Is it too far away? */
1542 if (m_ptr->cdis > dis_lim) continue;
1544 /* Get lite radius */
1547 /* Note the radii are cumulative */
1548 if (r_ptr->flags7 & (RF7_HAS_LITE_1 | RF7_SELF_LITE_1)) rad++;
1549 if (r_ptr->flags7 & (RF7_HAS_LITE_2 | RF7_SELF_LITE_2)) rad += 2;
1550 if (r_ptr->flags7 & (RF7_HAS_DARK_1 | RF7_SELF_DARK_1)) rad--;
1551 if (r_ptr->flags7 & (RF7_HAS_DARK_2 | RF7_SELF_DARK_2)) rad -= 2;
1553 /* Exit if has no light */
1557 if (!(r_ptr->flags7 & (RF7_SELF_LITE_1 | RF7_SELF_LITE_2)) && (MON_CSLEEP(m_ptr) || (!floor_ptr->dun_level && is_daytime()) || subject_ptr->phase_out)) continue;
1558 if (d_info[subject_ptr->dungeon_idx].flags1 & DF1_DARKNESS) rad = 1;
1559 add_mon_lite = mon_lite_hack;
1564 if (!(r_ptr->flags7 & (RF7_SELF_DARK_1 | RF7_SELF_DARK_2)) && (MON_CSLEEP(m_ptr) || (!floor_ptr->dun_level && !is_daytime()))) continue;
1565 add_mon_lite = mon_dark_hack;
1566 f_flag = FF_PROJECT;
1567 rad = -rad; /* Use absolute value */
1573 /* Is the monster visible? */
1574 mon_invis = !(floor_ptr->grid_array[mon_fy][mon_fx].info & CAVE_VIEW);
1576 /* The square it is on */
1577 add_mon_lite(subject_ptr, mon_fy, mon_fx);
1579 /* Adjacent squares */
1580 add_mon_lite(subject_ptr, mon_fy + 1, mon_fx);
1581 add_mon_lite(subject_ptr, mon_fy - 1, mon_fx);
1582 add_mon_lite(subject_ptr, mon_fy, mon_fx + 1);
1583 add_mon_lite(subject_ptr, mon_fy, mon_fx - 1);
1584 add_mon_lite(subject_ptr, mon_fy + 1, mon_fx + 1);
1585 add_mon_lite(subject_ptr, mon_fy + 1, mon_fx - 1);
1586 add_mon_lite(subject_ptr, mon_fy - 1, mon_fx + 1);
1587 add_mon_lite(subject_ptr, mon_fy - 1, mon_fx - 1);
1592 /* South of the monster */
1593 if (cave_have_flag_bold(subject_ptr->current_floor_ptr, mon_fy + 1, mon_fx, f_flag))
1595 add_mon_lite(subject_ptr, mon_fy + 2, mon_fx + 1);
1596 add_mon_lite(subject_ptr, mon_fy + 2, mon_fx);
1597 add_mon_lite(subject_ptr, mon_fy + 2, mon_fx - 1);
1599 g_ptr = &floor_ptr->grid_array[mon_fy + 2][mon_fx];
1602 if ((rad == 3) && cave_have_flag_grid(g_ptr, f_flag))
1604 add_mon_lite(subject_ptr, mon_fy + 3, mon_fx + 1);
1605 add_mon_lite(subject_ptr, mon_fy + 3, mon_fx);
1606 add_mon_lite(subject_ptr, mon_fy + 3, mon_fx - 1);
1610 /* North of the monster */
1611 if (cave_have_flag_bold(subject_ptr->current_floor_ptr, mon_fy - 1, mon_fx, f_flag))
1613 add_mon_lite(subject_ptr, mon_fy - 2, mon_fx + 1);
1614 add_mon_lite(subject_ptr, mon_fy - 2, mon_fx);
1615 add_mon_lite(subject_ptr, mon_fy - 2, mon_fx - 1);
1617 g_ptr = &floor_ptr->grid_array[mon_fy - 2][mon_fx];
1620 if ((rad == 3) && cave_have_flag_grid(g_ptr, f_flag))
1622 add_mon_lite(subject_ptr, mon_fy - 3, mon_fx + 1);
1623 add_mon_lite(subject_ptr, mon_fy - 3, mon_fx);
1624 add_mon_lite(subject_ptr, mon_fy - 3, mon_fx - 1);
1628 /* East of the monster */
1629 if (cave_have_flag_bold(subject_ptr->current_floor_ptr, mon_fy, mon_fx + 1, f_flag))
1631 add_mon_lite(subject_ptr, mon_fy + 1, mon_fx + 2);
1632 add_mon_lite(subject_ptr, mon_fy, mon_fx + 2);
1633 add_mon_lite(subject_ptr, mon_fy - 1, mon_fx + 2);
1635 g_ptr = &floor_ptr->grid_array[mon_fy][mon_fx + 2];
1638 if ((rad == 3) && cave_have_flag_grid(g_ptr, f_flag))
1640 add_mon_lite(subject_ptr, mon_fy + 1, mon_fx + 3);
1641 add_mon_lite(subject_ptr, mon_fy, mon_fx + 3);
1642 add_mon_lite(subject_ptr, mon_fy - 1, mon_fx + 3);
1646 /* West of the monster */
1647 if (cave_have_flag_bold(subject_ptr->current_floor_ptr, mon_fy, mon_fx - 1, f_flag))
1649 add_mon_lite(subject_ptr, mon_fy + 1, mon_fx - 2);
1650 add_mon_lite(subject_ptr, mon_fy, mon_fx - 2);
1651 add_mon_lite(subject_ptr, mon_fy - 1, mon_fx - 2);
1653 g_ptr = &floor_ptr->grid_array[mon_fy][mon_fx - 2];
1656 if ((rad == 3) && cave_have_flag_grid(g_ptr, f_flag))
1658 add_mon_lite(subject_ptr, mon_fy + 1, mon_fx - 3);
1659 add_mon_lite(subject_ptr, mon_fy, mon_fx - 3);
1660 add_mon_lite(subject_ptr, mon_fy - 1, mon_fx - 3);
1668 /* South-East of the monster */
1669 if (cave_have_flag_bold(subject_ptr->current_floor_ptr, mon_fy + 1, mon_fx + 1, f_flag))
1671 add_mon_lite(subject_ptr, mon_fy + 2, mon_fx + 2);
1674 /* South-West of the monster */
1675 if (cave_have_flag_bold(subject_ptr->current_floor_ptr, mon_fy + 1, mon_fx - 1, f_flag))
1677 add_mon_lite(subject_ptr, mon_fy + 2, mon_fx - 2);
1680 /* North-East of the monster */
1681 if (cave_have_flag_bold(subject_ptr->current_floor_ptr, mon_fy - 1, mon_fx + 1, f_flag))
1683 add_mon_lite(subject_ptr, mon_fy - 2, mon_fx + 2);
1686 /* North-West of the monster */
1687 if (cave_have_flag_bold(subject_ptr->current_floor_ptr, mon_fy - 1, mon_fx - 1, f_flag))
1689 add_mon_lite(subject_ptr, mon_fy - 2, mon_fx - 2);
1695 /* Save end of list of new squares */
1696 end_temp = tmp_pos.n;
1699 * Look at old set flags to see if there are any changes.
1701 for (i = 0; i < floor_ptr->mon_lite_n; i++)
1703 fx = floor_ptr->mon_lite_x[i];
1704 fy = floor_ptr->mon_lite_y[i];
1706 /* We trust this grid is in bounds */
1709 g_ptr = &floor_ptr->grid_array[fy][fx];
1711 if (g_ptr->info & CAVE_TEMP) /* Pervious lit */
1713 /* It it no longer lit? */
1714 if ((g_ptr->info & (CAVE_VIEW | CAVE_MNLT)) == CAVE_VIEW)
1716 /* It is now unlit */
1717 /* Add it to later visual update */
1718 cave_note_and_redraw_later(floor_ptr, g_ptr, fy, fx);
1721 else /* Pervious darkened */
1723 /* It it no longer darken? */
1724 if ((g_ptr->info & (CAVE_VIEW | CAVE_MNDK)) == CAVE_VIEW)
1726 /* It is now undarken */
1727 /* Add it to later visual update */
1728 cave_note_and_redraw_later(floor_ptr, g_ptr, fy, fx);
1732 /* Add to end of temp array */
1733 tmp_pos.x[tmp_pos.n] = fx;
1734 tmp_pos.y[tmp_pos.n] = fy;
1738 /* Clear the lite array */
1739 floor_ptr->mon_lite_n = 0;
1741 /* Copy the temp array into the lit array lighting the new squares. */
1742 for (i = 0; i < end_temp; i++)
1747 /* We trust this grid is in bounds */
1750 g_ptr = &floor_ptr->grid_array[fy][fx];
1752 if (g_ptr->info & CAVE_MNLT) /* Lit */
1754 /* The is the square newly lit and visible? */
1755 if ((g_ptr->info & (CAVE_VIEW | CAVE_TEMP)) == CAVE_VIEW)
1758 /* Add it to later visual update */
1759 cave_note_and_redraw_later(floor_ptr, g_ptr, fy, fx);
1764 /* The is the square newly darkened and visible? */
1765 if ((g_ptr->info & (CAVE_VIEW | CAVE_XTRA)) == CAVE_VIEW)
1767 /* It is now darkened */
1768 /* Add it to later visual update */
1769 cave_note_and_redraw_later(floor_ptr, g_ptr, fy, fx);
1773 /* Save in the monster lit or darkened array */
1774 floor_ptr->mon_lite_x[floor_ptr->mon_lite_n] = fx;
1775 floor_ptr->mon_lite_y[floor_ptr->mon_lite_n] = fy;
1776 floor_ptr->mon_lite_n++;
1779 /* Clear the temp flag for the old lit or darken grids */
1780 for (i = end_temp; i < tmp_pos.n; i++)
1782 /* We trust this grid is in bounds */
1784 floor_ptr->grid_array[tmp_pos.y[i]][tmp_pos.x[i]].info &= ~(CAVE_TEMP | CAVE_XTRA);
1787 /* Finished with tmp_pos.n */
1790 /* Mega-Hack -- Visual update later */
1791 subject_ptr->update |= (PU_DELAY_VIS);
1793 subject_ptr->monlite = (floor_ptr->grid_array[subject_ptr->y][subject_ptr->x].info & CAVE_MNLT) ? TRUE : FALSE;
1795 if (subject_ptr->special_defense & NINJA_S_STEALTH)
1797 if (subject_ptr->old_monlite != subject_ptr->monlite)
1799 if (subject_ptr->monlite)
1801 msg_print(_("影の覆いが薄れた気がする。", "Your mantle of shadow become thin."));
1805 msg_print(_("影の覆いが濃くなった!", "Your mantle of shadow restored its original darkness."));
1809 subject_ptr->old_monlite = subject_ptr->monlite;
1812 void clear_mon_lite(floor_type *floor_ptr)
1817 /* Clear all monster lit squares */
1818 for (i = 0; i < floor_ptr->mon_lite_n; i++)
1821 g_ptr = &floor_ptr->grid_array[floor_ptr->mon_lite_y[i]][floor_ptr->mon_lite_x[i]];
1823 /* Clear monster illumination flag */
1824 g_ptr->info &= ~(CAVE_MNLT | CAVE_MNDK);
1827 /* Empty the array */
1828 floor_ptr->mon_lite_n = 0;