1 | /* |
1 | /* |
2 | * This file is part of Deliantra, the Roguelike Realtime MMORPG. |
2 | * This file is part of Deliantra, the Roguelike Realtime MMORPG. |
3 | * |
3 | * |
4 | * Copyright (©) 2005,2006,2007,2008,2009,2010 Marc Alexander Lehmann / Robin Redeker / the Deliantra team |
4 | * Copyright (©) 2005,2006,2007,2008,2009,2010,2011 Marc Alexander Lehmann / Robin Redeker / the Deliantra team |
5 | * Copyright (©) 2001 Mark Wedel & Crossfire Development Team |
5 | * Copyright (©) 2001 Mark Wedel & Crossfire Development Team |
6 | * Copyright (©) 1992 Frank Tore Johansen |
6 | * Copyright (©) 1992 Frank Tore Johansen |
7 | * |
7 | * |
8 | * Deliantra is free software: you can redistribute it and/or modify it under |
8 | * Deliantra is free software: you can redistribute it and/or modify it under |
9 | * the terms of the Affero GNU General Public License as published by the |
9 | * the terms of the Affero GNU General Public License as published by the |
… | |
… | |
71 | 9, 10, 13, 14, 17, 18, 21, 22, |
71 | 9, 10, 13, 14, 17, 18, 21, 22, |
72 | 25, 26, 27, 30, 31, 32, 33, 36, 37, 39, 39, 42, 43, 44, 45, 48, |
72 | 25, 26, 27, 30, 31, 32, 33, 36, 37, 39, 39, 42, 43, 44, 45, 48, |
73 | 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49 |
73 | 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49 |
74 | }; |
74 | }; |
75 | |
75 | |
|
|
76 | const char *wall_suffix[16] = { |
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|
77 | "0", |
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|
78 | "1_3", |
|
|
79 | "1_4", |
|
|
80 | "2_1_2", |
|
|
81 | "1_2", |
|
|
82 | "2_2_4", |
|
|
83 | "2_2_1", |
|
|
84 | "3_1", |
|
|
85 | "1_1", |
|
|
86 | "2_2_3", |
|
|
87 | "2_2_2", |
|
|
88 | "3_3", |
|
|
89 | "2_1_1", |
|
|
90 | "3_4", |
|
|
91 | "3_2", |
|
|
92 | "4" |
|
|
93 | }; |
|
|
94 | |
76 | static void |
95 | static void |
77 | write_uuid (uval64 skip, bool sync) |
96 | write_uuid (uval64 skip, bool sync) |
78 | { |
97 | { |
79 | CALL_BEGIN (2); |
98 | CALL_BEGIN (2); |
80 | CALL_ARG_SV (newSVval64 (skip)); |
99 | CALL_ARG_SV (newSVval64 (skip)); |
… | |
… | |
255 | */ |
274 | */ |
256 | bool object::can_merge_slow (object *ob1, object *ob2) |
275 | bool object::can_merge_slow (object *ob1, object *ob2) |
257 | { |
276 | { |
258 | /* A couple quick sanity checks */ |
277 | /* A couple quick sanity checks */ |
259 | if (ob1 == ob2 |
278 | if (ob1 == ob2 |
260 | || ob1->type != ob2->type |
279 | || ob1->type != ob2->type |
261 | || ob1->value != ob2->value |
280 | || ob1->value != ob2->value |
262 | || ob1->name != ob2->name |
281 | || ob1->name != ob2->name |
|
|
282 | || ob1->custom_name != ob2->custom_name |
263 | || fabs (ob1->speed - ob2->speed) >= MIN_ACTIVE_SPEED) |
283 | || fabs (ob1->speed - ob2->speed) >= MIN_ACTIVE_SPEED) |
264 | return 0; |
284 | return 0; |
265 | |
285 | |
266 | /* Do not merge objects if nrof would overflow, assume nrof |
286 | /* Do not merge objects if nrof would overflow, assume nrof |
267 | * is always 0 .. 2**31-1 */ |
287 | * is always 0 .. 2**31-1 */ |
… | |
… | |
426 | |
446 | |
427 | return 0; |
447 | return 0; |
428 | } |
448 | } |
429 | |
449 | |
430 | // adjust weight per container type ("of holding") |
450 | // adjust weight per container type ("of holding") |
431 | static sint32 |
451 | static uint32 |
432 | weight_adjust_for (object *op, sint32 weight) |
452 | weight_adjust_for (object *op, uint32 weight) |
433 | { |
453 | { |
434 | return op->type == CONTAINER |
454 | return op->type == CONTAINER |
435 | ? lerp (weight, 0, 100, 0, 100 - op->stats.Str) |
455 | ? weight - weight * op->stats.Str / 100 |
436 | : weight; |
456 | : weight; |
437 | } |
457 | } |
438 | |
458 | |
439 | /* |
459 | /* |
440 | * adjust_weight(object, weight) adds the specified weight to an object, |
460 | * subtracts, then adds, the specified weight to an object, |
441 | * and also updates how much the environment(s) is/are carrying. |
461 | * and also updates how much the environment(s) is/are carrying. |
442 | */ |
462 | */ |
443 | static void |
463 | static void |
444 | adjust_weight (object *op, sint32 weight) |
464 | adjust_weight (object *op, sint32 sub, sint32 add) |
445 | { |
465 | { |
446 | while (op) |
466 | while (op) |
447 | { |
467 | { |
448 | // adjust by actual difference to account for rounding errors |
468 | sint32 ocarrying = op->carrying; |
449 | // i.e. (w2 - w1) / f != w2 / f - w1 / f and the latter is correct |
|
|
450 | weight = weight_adjust_for (op, op->carrying) |
|
|
451 | - weight_adjust_for (op, op->carrying - weight); |
|
|
452 | |
469 | |
453 | if (!weight) |
470 | op->carrying -= weight_adjust_for (op, sub); |
454 | return; |
471 | op->carrying += weight_adjust_for (op, add); |
455 | |
|
|
456 | op->carrying += weight; |
|
|
457 | |
472 | |
458 | if (object *pl = op->visible_to ()) |
473 | if (object *pl = op->visible_to ()) |
459 | if (pl != op) // player is handled lazily |
474 | if (pl != op) // player is handled lazily |
460 | esrv_update_item (UPD_WEIGHT, pl, op); |
475 | esrv_update_item (UPD_WEIGHT, pl, op); |
461 | |
476 | |
|
|
477 | sub = ocarrying; |
|
|
478 | add = op->carrying; |
|
|
479 | |
462 | op = op->env; |
480 | op = op->env; |
463 | } |
481 | } |
464 | } |
482 | } |
465 | |
483 | |
466 | /* |
484 | /* |
… | |
… | |
473 | { |
491 | { |
474 | sint32 sum = 0; |
492 | sint32 sum = 0; |
475 | |
493 | |
476 | for (object *op = inv; op; op = op->below) |
494 | for (object *op = inv; op; op = op->below) |
477 | { |
495 | { |
478 | if (op->inv) |
|
|
479 | op->update_weight (); |
496 | op->update_weight (); |
480 | |
497 | |
481 | sum += op->total_weight (); |
498 | sum += weight_adjust_for (this, op->total_weight ()); |
482 | } |
499 | } |
483 | |
|
|
484 | sum = weight_adjust_for (this, sum); |
|
|
485 | |
500 | |
486 | if (sum != carrying) |
501 | if (sum != carrying) |
487 | { |
502 | { |
|
|
503 | if (carrying != sum && carrying)//D |
|
|
504 | LOG (llevDebug, "updating carrying got %ld, expected %ld (%s)\n", |
|
|
505 | (long long)sum, (long long)carrying, debug_desc ()); |
|
|
506 | |
488 | carrying = sum; |
507 | carrying = sum; |
489 | |
508 | |
490 | if (object *pl = visible_to ()) |
509 | if (object *pl = visible_to ()) |
491 | if (pl != this) // player is handled lazily |
510 | if (pl != this) // player is handled lazily |
492 | esrv_update_item (UPD_WEIGHT, pl, this); |
511 | esrv_update_item (UPD_WEIGHT, pl, this); |
… | |
… | |
649 | object::instantiate () |
668 | object::instantiate () |
650 | { |
669 | { |
651 | if (!uuid.seq) // HACK |
670 | if (!uuid.seq) // HACK |
652 | uuid = UUID::gen (); |
671 | uuid = UUID::gen (); |
653 | |
672 | |
654 | // TODO: unclean state changes, should nt be done in copy_to AND instantiate |
673 | // TODO: unclean state changes, should not be done in copy_to AND instantiate |
655 | if (flag [FLAG_RANDOM_SPEED] && speed) |
674 | if (flag [FLAG_RANDOM_SPEED] && speed) |
656 | speed_left = - speed - rndm (); // TODO animation |
675 | speed_left = - speed - rndm (); // TODO animation |
657 | else |
676 | else |
658 | speed_left = -1.; |
677 | speed_left = -1.; |
659 | |
678 | |
… | |
… | |
1031 | } |
1050 | } |
1032 | |
1051 | |
1033 | static struct freed_map : maptile |
1052 | static struct freed_map : maptile |
1034 | { |
1053 | { |
1035 | freed_map () |
1054 | freed_map () |
|
|
1055 | : maptile (3, 3) |
1036 | { |
1056 | { |
1037 | path = "<freed objects map>"; |
1057 | path = "<freed objects map>"; |
1038 | name = "/internal/freed_objects_map"; |
1058 | name = "/internal/freed_objects_map"; |
1039 | width = 3; |
|
|
1040 | height = 3; |
|
|
1041 | no_drop = 1; |
1059 | no_drop = 1; |
1042 | no_reset = 1; |
1060 | no_reset = 1; |
1043 | |
1061 | |
1044 | alloc (); |
|
|
1045 | in_memory = MAP_ACTIVE; |
1062 | in_memory = MAP_ACTIVE; |
1046 | } |
1063 | } |
1047 | |
1064 | |
1048 | ~freed_map () |
1065 | ~freed_map () |
1049 | { |
1066 | { |
… | |
… | |
1142 | flag [FLAG_REMOVED] = false; // hack around the issue of visible_to checking flag_removed |
1159 | flag [FLAG_REMOVED] = false; // hack around the issue of visible_to checking flag_removed |
1143 | if (object *pl = visible_to ()) |
1160 | if (object *pl = visible_to ()) |
1144 | esrv_del_item (pl->contr, count); |
1161 | esrv_del_item (pl->contr, count); |
1145 | flag [FLAG_REMOVED] = true; // hack around the issue of visible_to checking flag_removed |
1162 | flag [FLAG_REMOVED] = true; // hack around the issue of visible_to checking flag_removed |
1146 | |
1163 | |
1147 | adjust_weight (env, -total_weight ()); |
1164 | adjust_weight (env, total_weight (), 0); |
1148 | |
1165 | |
1149 | object *pl = in_player (); |
1166 | object *pl = in_player (); |
1150 | |
1167 | |
1151 | /* we set up values so that it could be inserted into |
1168 | /* we set up values so that it could be inserted into |
1152 | * the map, but we don't actually do that - it is up |
1169 | * the map, but we don't actually do that - it is up |
… | |
… | |
1166 | |
1183 | |
1167 | if (pl && pl->is_player ()) |
1184 | if (pl && pl->is_player ()) |
1168 | { |
1185 | { |
1169 | if (expect_false (pl->contr->combat_ob == this)) |
1186 | if (expect_false (pl->contr->combat_ob == this)) |
1170 | { |
1187 | { |
1171 | pl->apply (pl->contr->combat_ob, AP_UNAPPLY); |
1188 | pl->apply (pl->contr->combat_ob, AP_UNAPPLY | AP_IGNORE_CURSE); |
1172 | pl->contr->combat_ob = 0; |
1189 | pl->contr->combat_ob = 0; |
1173 | if (pl->contr->ranged_ob) pl->apply (pl->contr->ranged_ob); |
1190 | if (pl->contr->ranged_ob) pl->apply (pl->contr->ranged_ob); |
1174 | } |
1191 | } |
1175 | |
1192 | |
1176 | if (expect_false (pl->contr->ranged_ob == this)) |
1193 | if (expect_false (pl->contr->ranged_ob == this)) |
1177 | { |
1194 | { |
1178 | pl->apply (pl->contr->ranged_ob, AP_UNAPPLY); |
1195 | pl->apply (pl->contr->ranged_ob, AP_UNAPPLY | AP_IGNORE_CURSE); |
1179 | pl->contr->ranged_ob = 0; |
1196 | pl->contr->ranged_ob = 0; |
1180 | if (pl->contr->combat_ob) pl->apply (pl->contr->combat_ob); |
1197 | if (pl->contr->combat_ob) pl->apply (pl->contr->combat_ob); |
1181 | } |
1198 | } |
1182 | |
1199 | |
1183 | pl->contr->queue_stats_update (); |
1200 | pl->contr->queue_stats_update (); |
… | |
… | |
1570 | */ |
1587 | */ |
1571 | |
1588 | |
1572 | /* if this is not the head or flag has been passed, don't check walk on status */ |
1589 | /* if this is not the head or flag has been passed, don't check walk on status */ |
1573 | if (!(flag & INS_NO_WALK_ON) && op->is_head ()) |
1590 | if (!(flag & INS_NO_WALK_ON) && op->is_head ()) |
1574 | { |
1591 | { |
1575 | if (check_move_on (op, originator)) |
1592 | if (check_move_on (op, originator, flag)) |
1576 | return 0; |
1593 | return 0; |
1577 | |
1594 | |
1578 | /* If we are a multi part object, lets work our way through the check |
1595 | /* If we are a multi part object, let's work our way through the check |
1579 | * walk on's. |
1596 | * walk on's. |
1580 | */ |
1597 | */ |
1581 | for (object *tmp = op->more; tmp; tmp = tmp->more) |
1598 | for (object *tmp = op->more; tmp; tmp = tmp->more) |
1582 | if (check_move_on (tmp, originator)) |
1599 | if (check_move_on (tmp, originator, flag)) |
1583 | return 0; |
1600 | return 0; |
1584 | } |
1601 | } |
1585 | |
1602 | |
1586 | return op; |
1603 | return op; |
1587 | } |
1604 | } |
… | |
… | |
1653 | |
1670 | |
1654 | nr = min (nr, nrof); |
1671 | nr = min (nr, nrof); |
1655 | |
1672 | |
1656 | if (nrof > nr) |
1673 | if (nrof > nr) |
1657 | { |
1674 | { |
|
|
1675 | sint64 oweight = total_weight (); |
|
|
1676 | |
1658 | nrof -= nr; |
1677 | nrof -= nr; |
1659 | adjust_weight (env, -weight * max (1, nr)); // carrying == 0 |
|
|
1660 | |
1678 | |
1661 | if (object *pl = visible_to ()) |
1679 | if (object *pl = visible_to ()) |
1662 | esrv_update_item (UPD_NROF, pl, this); |
1680 | esrv_update_item (UPD_NROF, pl, this); |
|
|
1681 | |
|
|
1682 | adjust_weight (env, oweight, total_weight ()); |
1663 | |
1683 | |
1664 | return true; |
1684 | return true; |
1665 | } |
1685 | } |
1666 | else |
1686 | else |
1667 | { |
1687 | { |
… | |
… | |
1742 | if (op->nrof) |
1762 | if (op->nrof) |
1743 | for (object *tmp = inv; tmp; tmp = tmp->below) |
1763 | for (object *tmp = inv; tmp; tmp = tmp->below) |
1744 | if (object::can_merge (tmp, op)) |
1764 | if (object::can_merge (tmp, op)) |
1745 | { |
1765 | { |
1746 | /* return the original object and remove inserted object |
1766 | /* return the original object and remove inserted object |
1747 | (client needs the original object) */ |
1767 | (client prefers the original object) */ |
|
|
1768 | |
|
|
1769 | // carring must be 0 for mergable objects |
|
|
1770 | sint64 oweight = tmp->weight * tmp->nrof; |
|
|
1771 | |
1748 | tmp->nrof += op->nrof; |
1772 | tmp->nrof += op->nrof; |
1749 | |
1773 | |
1750 | if (object *pl = tmp->visible_to ()) |
1774 | if (object *pl = tmp->visible_to ()) |
1751 | esrv_update_item (UPD_NROF, pl, tmp); |
1775 | esrv_update_item (UPD_NROF, pl, tmp); |
1752 | |
1776 | |
1753 | adjust_weight (this, op->total_weight ()); |
1777 | adjust_weight (this, oweight, tmp->weight * tmp->nrof); |
1754 | |
1778 | |
1755 | op->destroy (); |
1779 | op->destroy (); |
1756 | op = tmp; |
1780 | op = tmp; |
1757 | goto inserted; |
1781 | goto inserted; |
1758 | } |
1782 | } |
… | |
… | |
1774 | op->flag [FLAG_REMOVED] = 0; |
1798 | op->flag [FLAG_REMOVED] = 0; |
1775 | |
1799 | |
1776 | if (object *pl = op->visible_to ()) |
1800 | if (object *pl = op->visible_to ()) |
1777 | esrv_send_item (pl, op); |
1801 | esrv_send_item (pl, op); |
1778 | |
1802 | |
1779 | adjust_weight (this, op->total_weight ()); |
1803 | adjust_weight (this, 0, op->total_weight ()); |
1780 | |
1804 | |
1781 | inserted: |
1805 | inserted: |
1782 | /* reset the light list and los of the players on the map */ |
1806 | /* reset the light list and los of the players on the map */ |
1783 | if (op->glow_radius && is_on_map ()) |
1807 | if (op->glow_radius && is_on_map ()) |
1784 | { |
1808 | { |
… | |
… | |
1813 | * MSW 2001-07-08: Check all objects on space, not just those below |
1837 | * MSW 2001-07-08: Check all objects on space, not just those below |
1814 | * object being inserted. insert_ob_in_map may not put new objects |
1838 | * object being inserted. insert_ob_in_map may not put new objects |
1815 | * on top. |
1839 | * on top. |
1816 | */ |
1840 | */ |
1817 | int |
1841 | int |
1818 | check_move_on (object *op, object *originator) |
1842 | check_move_on (object *op, object *originator, int flags) |
1819 | { |
1843 | { |
1820 | if (op->flag [FLAG_NO_APPLY]) |
1844 | if (op->flag [FLAG_NO_APPLY]) |
1821 | return 0; |
1845 | return 0; |
1822 | |
1846 | |
1823 | object *tmp; |
1847 | object *tmp; |
… | |
… | |
1882 | |
1906 | |
1883 | /* Basically same logic as above, except now for actual apply. */ |
1907 | /* Basically same logic as above, except now for actual apply. */ |
1884 | if ((!op->move_type && tmp->move_on & MOVE_WALK) || |
1908 | if ((!op->move_type && tmp->move_on & MOVE_WALK) || |
1885 | ((op->move_type & tmp->move_on) && (op->move_type & ~tmp->move_on & ~tmp->move_block) == 0)) |
1909 | ((op->move_type & tmp->move_on) && (op->move_type & ~tmp->move_on & ~tmp->move_block) == 0)) |
1886 | { |
1910 | { |
|
|
1911 | if ((flags & INS_NO_AUTO_EXIT) |
|
|
1912 | && (tmp->type == EXIT || tmp->type == TELEPORTER |
|
|
1913 | || tmp->type == HOLE || tmp->type == TRAPDOOR)) //TODO: temporary, fix exits instead |
|
|
1914 | continue; |
|
|
1915 | |
1887 | move_apply (tmp, op, originator); |
1916 | move_apply (tmp, op, originator); |
1888 | |
1917 | |
1889 | if (op->destroyed ()) |
1918 | if (op->destroyed ()) |
1890 | return 1; |
1919 | return 1; |
1891 | |
1920 | |
… | |
… | |
2216 | { |
2245 | { |
2217 | return (ob1->x - ob2->x) * (ob1->x - ob2->x) + (ob1->y - ob2->y) * (ob1->y - ob2->y); |
2246 | return (ob1->x - ob2->x) * (ob1->x - ob2->x) + (ob1->y - ob2->y) * (ob1->y - ob2->y); |
2218 | } |
2247 | } |
2219 | |
2248 | |
2220 | /* |
2249 | /* |
2221 | * find_dir_2(delta-x,delta-y) will return a direction in which |
2250 | * find_dir_2(delta-x,delta-y) will return a direction value |
2222 | * an object which has subtracted the x and y coordinates of another |
2251 | * for running into direct [dx, dy]. |
2223 | * object, needs to travel toward it. |
2252 | * (the opposite of crossfire's find_dir_2!) |
2224 | */ |
2253 | */ |
2225 | int |
2254 | int |
2226 | find_dir_2 (int x, int y) |
2255 | find_dir_2 (int x, int y) |
2227 | { |
2256 | { |
|
|
2257 | #if 1 // new algorithm |
|
|
2258 | // this works by putting x, y into 16 sectors, which |
|
|
2259 | // are not equal sized, but are a better approximation |
|
|
2260 | // then the old algorithm, and then using a mapping |
|
|
2261 | // table to map it into a direction value. |
|
|
2262 | // basically, it maps these comparisons to each bit |
|
|
2263 | // bit #3: x < 0 |
|
|
2264 | // bit #2: y < 0 |
|
|
2265 | // bit #1: x > y |
|
|
2266 | // bit #0: x > 2y |
|
|
2267 | |
|
|
2268 | static const uint8 dir[16] = { |
|
|
2269 | 4, 5, 4, 3, |
|
|
2270 | 2, 1, 2, 3, |
|
|
2271 | 6, 5, 6, 7, |
|
|
2272 | 8, 1, 8, 7, |
|
|
2273 | }; |
|
|
2274 | int sector = 0; |
|
|
2275 | |
|
|
2276 | // this is a bit ugly, but more likely to result in branchless code |
|
|
2277 | sector |= x < 0 ? 8 : 0; |
|
|
2278 | x = x < 0 ? -x : x; // abs |
|
|
2279 | |
|
|
2280 | sector |= y < 0 ? 4 : 0; |
|
|
2281 | y = y < 0 ? -y : y; // abs |
|
|
2282 | |
|
|
2283 | if (x > y) |
|
|
2284 | { |
|
|
2285 | sector |= 2; |
|
|
2286 | |
|
|
2287 | if (x > y * 2) |
|
|
2288 | sector |= 1; |
|
|
2289 | } |
|
|
2290 | else |
|
|
2291 | { |
|
|
2292 | if (y > x * 2) |
|
|
2293 | sector |= 1; |
|
|
2294 | else if (!y) |
|
|
2295 | return 0; // x == 0 here |
|
|
2296 | } |
|
|
2297 | |
|
|
2298 | return dir [sector]; |
|
|
2299 | #else // old algorithm |
2228 | int q; |
2300 | int q; |
2229 | |
2301 | |
2230 | if (y) |
2302 | if (y) |
2231 | q = x * 100 / y; |
2303 | q = 128 * x / y; |
2232 | else if (x) |
2304 | else if (x) |
2233 | q = -300 * x; |
2305 | q = -512 * x; // to make it > 309 |
2234 | else |
2306 | else |
2235 | return 0; |
2307 | return 0; |
2236 | |
2308 | |
2237 | if (y > 0) |
2309 | if (y > 0) |
2238 | { |
2310 | { |
2239 | if (q < -242) |
2311 | if (q < -309) return 7; |
|
|
2312 | if (q < -52) return 6; |
|
|
2313 | if (q < 52) return 5; |
|
|
2314 | if (q < 309) return 4; |
|
|
2315 | |
2240 | return 3; |
2316 | return 3; |
2241 | if (q < -41) |
2317 | } |
2242 | return 2; |
2318 | else |
2243 | if (q < 41) |
2319 | { |
2244 | return 1; |
2320 | if (q < -309) return 3; |
2245 | if (q < 242) |
2321 | if (q < -52) return 2; |
2246 | return 8; |
2322 | if (q < 52) return 1; |
|
|
2323 | if (q < 309) return 8; |
|
|
2324 | |
2247 | return 7; |
2325 | return 7; |
2248 | } |
2326 | } |
2249 | |
2327 | #endif |
2250 | if (q < -242) |
|
|
2251 | return 7; |
|
|
2252 | if (q < -41) |
|
|
2253 | return 6; |
|
|
2254 | if (q < 41) |
|
|
2255 | return 5; |
|
|
2256 | if (q < 242) |
|
|
2257 | return 4; |
|
|
2258 | |
|
|
2259 | return 3; |
|
|
2260 | } |
2328 | } |
2261 | |
2329 | |
2262 | /* |
2330 | /* |
2263 | * dirdiff(dir1, dir2) returns how many 45-degrees differences there is |
2331 | * dirdiff(dir1, dir2) returns how many 45-degrees differences there is |
2264 | * between two directions (which are expected to be absolute (see absdir()) |
2332 | * between two directions (which are expected to be absolute (see absdir()) |
2265 | */ |
2333 | */ |
2266 | int |
2334 | int |
2267 | dirdiff (int dir1, int dir2) |
2335 | dirdiff (int dir1, int dir2) |
2268 | { |
2336 | { |
2269 | int d; |
|
|
2270 | |
|
|
2271 | d = abs (dir1 - dir2); |
2337 | int d = abs (dir1 - dir2); |
2272 | if (d > 4) |
|
|
2273 | d = 8 - d; |
|
|
2274 | |
2338 | |
2275 | return d; |
2339 | return d > 4 ? 8 - d : d; |
2276 | } |
2340 | } |
2277 | |
2341 | |
2278 | /* peterm: |
2342 | /* peterm: |
2279 | * do LOS stuff for ball lightning. Go after the closest VISIBLE monster. |
2343 | * do LOS stuff for ball lightning. Go after the closest VISIBLE monster. |
2280 | * Basically, this is a table of directions, and what directions |
2344 | * Basically, this is a table of directions, and what directions |
… | |
… | |
2753 | return contr->mark; |
2817 | return contr->mark; |
2754 | else |
2818 | else |
2755 | return 0; |
2819 | return 0; |
2756 | } |
2820 | } |
2757 | |
2821 | |
|
|
2822 | // put marked object first in the inventory |
|
|
2823 | // this is used by identify-like spells so players can influence |
|
|
2824 | // the order a bit. |
|
|
2825 | void |
|
|
2826 | object::splay_marked () |
|
|
2827 | { |
|
|
2828 | if (object *marked = mark ()) |
|
|
2829 | splay (marked); |
|
|
2830 | } |
|
|
2831 | |