3 * @brief モンスター魔法の実装(対モンスター処理) / Monster spells (attack monster)
6 * Copyright (c) 1997 Ben Harrison, James E. Wilson, Robert A. Koeneke\n
7 * This software may be copied and distributed for educational, research,\n
8 * and not for profit purposes provided that this copyright and statement\n
9 * are included in all such copies. Other copyrights may also apply.\n
10 * 2014 Deskull rearranged comment for Doxygen.\n
16 #include "realm-hex.h"
17 #include "player-move.h"
19 #include "monster-status.h"
20 #include "monster-spell.h"
23 * @brief モンスターが敵対モンスターにビームを当てること可能かを判定する /
24 * Determine if a beam spell will hit the target.
29 * @param m_ptr 使用するモンスターの構造体参照ポインタ
30 * @return ビームが到達可能ならばTRUEを返す
32 static bool direct_beam(POSITION y1, POSITION x1, POSITION y2, POSITION x2, monster_type *m_ptr)
41 bool is_friend = is_pet(m_ptr);
43 /* Check the projection path */
44 grid_n = project_path(grid_g, MAX_RANGE, y1, x1, y2, x2, PROJECT_THRU);
46 /* No grid is ever projectable from itself */
47 if (!grid_n) return (FALSE);
49 for (i = 0; i < grid_n; i++)
51 y = GRID_Y(grid_g[i]);
52 x = GRID_X(grid_g[i]);
54 if (y == y2 && x == x2)
56 else if (is_friend && current_floor_ptr->grid_array[y][x].m_idx > 0 &&
57 !are_enemies(m_ptr, ¤t_floor_ptr->m_list[current_floor_ptr->grid_array[y][x].m_idx]))
59 /* Friends don't shoot friends */
63 if (is_friend && player_bold(y, x))
72 * @brief モンスターが敵対モンスターに直接ブレスを当てることが可能かを判定する /
73 * Determine if a breath will hit the target.
80 * @param is_friend TRUEならば、プレイヤーを巻き込む時にブレスの判定をFALSEにする。
81 * @return ブレスを直接当てられるならばTRUEを返す
83 static bool breath_direct(POSITION y1, POSITION x1, POSITION y2, POSITION x2, POSITION rad, EFFECT_ID typ, bool is_friend)
85 /* Must be the same as projectable() */
97 POSITION gx[1024], gy[1024];
99 POSITION gm_rad = rad;
112 case GF_DISINTEGRATE:
120 /* Check the projection path */
121 grid_n = project_path(grid_g, MAX_RANGE, y1, x1, y2, x2, flg);
123 /* Project along the path */
124 for (i = 0; i < grid_n; ++i)
126 int ny = GRID_Y(grid_g[i]);
127 int nx = GRID_X(grid_g[i]);
129 if (flg & PROJECT_DISI)
131 /* Hack -- Balls explode before reaching walls */
132 if (cave_stop_disintegration(ny, nx)) break;
134 else if (flg & PROJECT_LOS)
136 /* Hack -- Balls explode before reaching walls */
137 if (!cave_los_bold(ny, nx)) break;
141 /* Hack -- Balls explode before reaching walls */
142 if (!cave_have_flag_bold(ny, nx, FF_PROJECT)) break;
145 /* Save the "blast epicenter" */
154 if (flg & PROJECT_DISI)
156 if (in_disintegration_range(y1, x1, y2, x2) && (distance(y1, x1, y2, x2) <= rad)) hit2 = TRUE;
157 if (in_disintegration_range(y1, x1, p_ptr->y, p_ptr->x) && (distance(y1, x1, p_ptr->y, p_ptr->x) <= rad)) hityou = TRUE;
159 else if (flg & PROJECT_LOS)
161 if (los(y1, x1, y2, x2) && (distance(y1, x1, y2, x2) <= rad)) hit2 = TRUE;
162 if (los(y1, x1, p_ptr->y, p_ptr->x) && (distance(y1, x1, p_ptr->y, p_ptr->x) <= rad)) hityou = TRUE;
166 if (projectable(y1, x1, y2, x2) && (distance(y1, x1, y2, x2) <= rad)) hit2 = TRUE;
167 if (projectable(y1, x1, p_ptr->y, p_ptr->x) && (distance(y1, x1, p_ptr->y, p_ptr->x) <= rad)) hityou = TRUE;
172 breath_shape(grid_g, grid_n, &grids, gx, gy, gm, &gm_rad, rad, y1, x1, y, x, typ);
174 for (i = 0; i < grids; i++)
176 /* Extract the location */
180 if ((y == y2) && (x == x2)) hit2 = TRUE;
181 if (player_bold(y, x)) hityou = TRUE;
185 if (!hit2) return FALSE;
186 if (is_friend && hityou) return FALSE;
192 * @brief モンスターが特殊能力の目標地点を決める処理 /
193 * Get the actual center point of ball spells (rad > 1) (originally from TOband)
196 * @param ty 目標Y座標を返す参照ポインタ
197 * @param tx 目標X座標を返す参照ポインタ
198 * @param flg 判定のフラグ配列
201 void get_project_point(POSITION sy, POSITION sx, POSITION *ty, POSITION *tx, BIT_FLAGS flg)
206 path_n = project_path(path_g, MAX_RANGE, sy, sx, *ty, *tx, flg);
211 /* Project along the path */
212 for (i = 0; i < path_n; i++)
214 sy = GRID_Y(path_g[i]);
215 sx = GRID_X(path_g[i]);
217 /* Hack -- Balls explode before reaching walls */
218 if (!cave_have_flag_bold(sy, sx, FF_PROJECT)) break;
226 * @brief モンスターが敵モンスターに魔力消去を使うかどうかを返す /
227 * Check should monster cast dispel spell at other monster.
228 * @param m_idx 術者のモンスターID
229 * @param t_idx 目標のモンスターID
230 * @return 魔力消去を使うべきならばTRUEを変えす。
232 static bool dispel_check_monster(MONSTER_IDX m_idx, MONSTER_IDX t_idx)
234 monster_type *t_ptr = ¤t_floor_ptr->m_list[t_idx];
236 if (MON_INVULNER(t_ptr)) return TRUE;
238 if (t_ptr->mspeed < 135)
240 if (MON_FAST(t_ptr)) return TRUE;
244 if (t_idx == p_ptr->riding)
246 if (dispel_check(m_idx)) return TRUE;
249 /* No need to cast dispel spell */
254 * @brief モンスターが敵モンスターに特殊能力を使う処理のメインルーチン /
255 * Monster tries to 'cast a spell' (or breath, etc) at another monster.
256 * @param m_idx 術者のモンスターID
257 * @return 実際に特殊能力を使った場合TRUEを返す
259 * The player is only disturbed if able to be affected by the spell.
261 bool monst_spell_monst(MONSTER_IDX m_idx)
263 POSITION y = 0, x = 0;
265 MONSTER_IDX target_idx = 0;
271 byte spell[96], num = 0;
273 GAME_TEXT m_name[160];
274 GAME_TEXT t_name[160];
280 monster_type *m_ptr = ¤t_floor_ptr->m_list[m_idx];
281 monster_type *t_ptr = NULL;
283 monster_race *r_ptr = &r_info[m_ptr->r_idx];
287 bool see_m = is_seen(m_ptr);
288 bool maneable = player_has_los_bold(m_ptr->fy, m_ptr->fx);
289 bool pet = is_pet(m_ptr);
291 bool in_no_magic_dungeon = (d_info[p_ptr->dungeon_idx].flags1 & DF1_NO_MAGIC) && current_floor_ptr->dun_level
292 && (!p_ptr->inside_quest || is_fixed_quest_idx(p_ptr->inside_quest));
294 bool can_use_lite_area = FALSE;
297 /* Cannot cast spells when confused */
298 if (MON_CONFUSED(m_ptr)) return (FALSE);
300 /* Extract the racial spell flags */
302 f5 = r_ptr->a_ability_flags1;
303 f6 = r_ptr->a_ability_flags2;
305 /* Target is given for pet? */
306 if (pet_t_m_idx && pet)
308 target_idx = pet_t_m_idx;
309 t_ptr = ¤t_floor_ptr->m_list[target_idx];
311 /* Cancel if not projectable (for now) */
312 if ((m_idx == target_idx) || !projectable(m_ptr->fy, m_ptr->fx, t_ptr->fy, t_ptr->fx))
318 /* Is there counter attack target? */
319 if (!target_idx && m_ptr->target_y)
321 target_idx = current_floor_ptr->grid_array[m_ptr->target_y][m_ptr->target_x].m_idx;
325 t_ptr = ¤t_floor_ptr->m_list[target_idx];
327 /* Cancel if neither enemy nor a given target */
328 if ((m_idx == target_idx) ||
329 ((target_idx != pet_t_m_idx) && !are_enemies(m_ptr, t_ptr)))
334 /* Allow only summoning etc.. if not projectable */
335 else if (!projectable(m_ptr->fy, m_ptr->fx, t_ptr->fy, t_ptr->fx))
337 f4 &= (RF4_INDIRECT_MASK);
338 f5 &= (RF5_INDIRECT_MASK);
339 f6 &= (RF6_INDIRECT_MASK);
344 /* Look for enemies normally */
347 bool success = FALSE;
349 if (p_ptr->inside_battle)
351 start = randint1(m_max-1) + m_max;
352 if (randint0(2)) plus = -1;
354 else start = m_max + 1;
356 /* Scan thru all monsters */
357 for (i = start; ((i < start + m_max) && (i > start - m_max)); i += plus)
359 MONSTER_IDX dummy = (i % m_max);
360 if (!dummy) continue;
363 t_ptr = ¤t_floor_ptr->m_list[target_idx];
365 if (!monster_is_valid(t_ptr)) continue;
367 /* Monster must be 'an enemy' */
368 if ((m_idx == target_idx) || !are_enemies(m_ptr, t_ptr)) continue;
370 /* Monster must be projectable */
371 if (!projectable(m_ptr->fy, m_ptr->fx, t_ptr->fy, t_ptr->fx)) continue;
379 if (!success) return FALSE;
383 /* OK -- we've got a target */
387 /* Forget old counter attack target */
390 /* Remove unimplemented spells */
391 f6 &= ~(RF6_WORLD | RF6_TRAPS | RF6_FORGET);
393 if (f4 & RF4_BR_LITE)
395 if (!los(m_ptr->fy, m_ptr->fx, t_ptr->fy, t_ptr->fx))
396 f4 &= ~(RF4_BR_LITE);
399 /* Remove unimplemented special moves */
400 if (f6 & RF6_SPECIAL)
402 if ((m_ptr->r_idx != MON_ROLENTO) && (r_ptr->d_char != 'B'))
403 f6 &= ~(RF6_SPECIAL);
406 if (f6 & RF6_DARKNESS)
408 bool vs_ninja = (p_ptr->pclass == CLASS_NINJA) && !is_hostile(t_ptr);
411 !(r_ptr->flags3 & (RF3_UNDEAD | RF3_HURT_LITE)) &&
412 !(r_ptr->flags7 & RF7_DARK_MASK))
413 can_use_lite_area = TRUE;
415 if (!(r_ptr->flags2 & RF2_STUPID))
417 if (d_info[p_ptr->dungeon_idx].flags1 & DF1_DARKNESS) f6 &= ~(RF6_DARKNESS);
418 else if (vs_ninja && !can_use_lite_area) f6 &= ~(RF6_DARKNESS);
422 if (in_no_magic_dungeon && !(r_ptr->flags2 & RF2_STUPID))
424 f4 &= (RF4_NOMAGIC_MASK);
425 f5 &= (RF5_NOMAGIC_MASK);
426 f6 &= (RF6_NOMAGIC_MASK);
429 if (p_ptr->inside_arena || p_ptr->inside_battle)
431 f4 &= ~(RF4_SUMMON_MASK);
432 f5 &= ~(RF5_SUMMON_MASK);
433 f6 &= ~(RF6_SUMMON_MASK | RF6_TELE_LEVEL);
435 if (m_ptr->r_idx == MON_ROLENTO) f6 &= ~(RF6_SPECIAL);
438 if (p_ptr->inside_battle && !one_in_(3))
443 if (m_idx == p_ptr->riding)
445 f4 &= ~(RF4_RIDING_MASK);
446 f5 &= ~(RF5_RIDING_MASK);
447 f6 &= ~(RF6_RIDING_MASK);
453 f6 &= ~(RF6_DARKNESS | RF6_TRAPS);
455 if (!(p_ptr->pet_extra_flags & PF_TELEPORT))
457 f6 &= ~(RF6_BLINK | RF6_TPORT | RF6_TELE_TO | RF6_TELE_AWAY | RF6_TELE_LEVEL);
460 if (!(p_ptr->pet_extra_flags & PF_ATTACK_SPELL))
462 f4 &= ~(RF4_ATTACK_MASK);
463 f5 &= ~(RF5_ATTACK_MASK);
464 f6 &= ~(RF6_ATTACK_MASK);
467 if (!(p_ptr->pet_extra_flags & PF_SUMMON_SPELL))
469 f4 &= ~(RF4_SUMMON_MASK);
470 f5 &= ~(RF5_SUMMON_MASK);
471 f6 &= ~(RF6_SUMMON_MASK);
474 /* Prevent collateral damage */
475 if (!(p_ptr->pet_extra_flags & PF_BALL_SPELL) && (m_idx != p_ptr->riding))
477 if ((f4 & (RF4_BALL_MASK & ~(RF4_ROCKET))) ||
478 (f5 & RF5_BALL_MASK) ||
479 (f6 & RF6_BALL_MASK))
484 get_project_point(m_ptr->fy, m_ptr->fx, &real_y, &real_x, 0L);
486 if (projectable(real_y, real_x, p_ptr->y, p_ptr->x))
488 int dist = distance(real_y, real_x, p_ptr->y, p_ptr->x);
492 f4 &= ~(RF4_BALL_MASK & ~(RF4_ROCKET));
493 f5 &= ~(RF5_BALL_MASK);
494 f6 &= ~(RF6_BALL_MASK);
498 f4 &= ~(RF4_BIG_BALL_MASK);
499 f5 &= ~(RF5_BIG_BALL_MASK);
500 f6 &= ~(RF6_BIG_BALL_MASK);
503 else if (f5 & RF5_BA_LITE)
505 if ((distance(real_y, real_x, p_ptr->y, p_ptr->x) <= 4) && los(real_y, real_x, p_ptr->y, p_ptr->x))
506 f5 &= ~(RF5_BA_LITE);
515 get_project_point(m_ptr->fy, m_ptr->fx, &real_y, &real_x, PROJECT_STOP);
516 if (projectable(real_y, real_x, p_ptr->y, p_ptr->x) && (distance(real_y, real_x, p_ptr->y, p_ptr->x) <= 2))
520 if (((f4 & RF4_BEAM_MASK) || (f5 & RF5_BEAM_MASK) || (f6 & RF6_BEAM_MASK)) &&
521 !direct_beam(m_ptr->fy, m_ptr->fx, t_ptr->fy, t_ptr->fx, m_ptr))
523 f4 &= ~(RF4_BEAM_MASK);
524 f5 &= ~(RF5_BEAM_MASK);
525 f6 &= ~(RF6_BEAM_MASK);
528 if ((f4 & RF4_BREATH_MASK) || (f5 & RF5_BREATH_MASK) || (f6 & RF6_BREATH_MASK))
530 /* Expected breath radius */
531 POSITION rad = (r_ptr->flags2 & RF2_POWERFUL) ? 3 : 2;
533 if (!breath_direct(m_ptr->fy, m_ptr->fx, t_ptr->fy, t_ptr->fx, rad, 0, TRUE))
535 f4 &= ~(RF4_BREATH_MASK);
536 f5 &= ~(RF5_BREATH_MASK);
537 f6 &= ~(RF6_BREATH_MASK);
539 else if ((f4 & RF4_BR_LITE) &&
540 !breath_direct(m_ptr->fy, m_ptr->fx, t_ptr->fy, t_ptr->fx, rad, GF_LITE, TRUE))
542 f4 &= ~(RF4_BR_LITE);
544 else if ((f4 & RF4_BR_DISI) &&
545 !breath_direct(m_ptr->fy, m_ptr->fx, t_ptr->fy, t_ptr->fx, rad, GF_DISINTEGRATE, TRUE))
547 f4 &= ~(RF4_BR_DISI);
552 /* Special moves restriction */
553 if (f6 & RF6_SPECIAL)
555 if (m_ptr->r_idx == MON_ROLENTO)
557 if ((p_ptr->pet_extra_flags & (PF_ATTACK_SPELL | PF_SUMMON_SPELL)) != (PF_ATTACK_SPELL | PF_SUMMON_SPELL))
558 f6 &= ~(RF6_SPECIAL);
560 else if (r_ptr->d_char == 'B')
562 if ((p_ptr->pet_extra_flags & (PF_ATTACK_SPELL | PF_TELEPORT)) != (PF_ATTACK_SPELL | PF_TELEPORT))
563 f6 &= ~(RF6_SPECIAL);
565 else f6 &= ~(RF6_SPECIAL);
569 /* Remove some spells if necessary */
571 if (!(r_ptr->flags2 & RF2_STUPID))
573 /* Check for a clean bolt shot */
574 if (((f4 & RF4_BOLT_MASK) ||
575 (f5 & RF5_BOLT_MASK) ||
576 (f6 & RF6_BOLT_MASK)) &&
577 !clean_shot(m_ptr->fy, m_ptr->fx, t_ptr->fy, t_ptr->fx, pet))
579 f4 &= ~(RF4_BOLT_MASK);
580 f5 &= ~(RF5_BOLT_MASK);
581 f6 &= ~(RF6_BOLT_MASK);
584 /* Check for a possible summon */
585 if (((f4 & RF4_SUMMON_MASK) ||
586 (f5 & RF5_SUMMON_MASK) ||
587 (f6 & RF6_SUMMON_MASK)) &&
588 !(summon_possible(t_ptr->fy, t_ptr->fx)))
590 /* Remove summoning spells */
591 f4 &= ~(RF4_SUMMON_MASK);
592 f5 &= ~(RF5_SUMMON_MASK);
593 f6 &= ~(RF6_SUMMON_MASK);
597 if ((f4 & RF4_DISPEL) && !dispel_check_monster(m_idx, target_idx))
599 /* Remove dispel spell */
603 /* Check for a possible raise dead */
604 if ((f6 & RF6_RAISE_DEAD) && !raise_possible(m_ptr))
606 /* Remove raise dead spell */
607 f6 &= ~(RF6_RAISE_DEAD);
610 /* Special moves restriction */
611 if (f6 & RF6_SPECIAL)
613 if ((m_ptr->r_idx == MON_ROLENTO) && !summon_possible(t_ptr->fy, t_ptr->fx))
615 f6 &= ~(RF6_SPECIAL);
620 if (r_ptr->flags2 & RF2_SMART)
622 /* Hack -- allow "desperate" spells */
623 if ((m_ptr->hp < m_ptr->maxhp / 10) &&
624 (randint0(100) < 50))
626 /* Require intelligent spells */
627 f4 &= (RF4_INT_MASK);
628 f5 &= (RF5_INT_MASK);
629 f6 &= (RF6_INT_MASK);
632 /* Hack -- decline "teleport level" in some case */
633 if ((f6 & RF6_TELE_LEVEL) && TELE_LEVEL_IS_INEFF((target_idx == p_ptr->riding) ? 0 : target_idx))
635 f6 &= ~(RF6_TELE_LEVEL);
640 if (!f4 && !f5 && !f6) return FALSE;
642 /* Extract the "inate" spells */
643 for (k = 0; k < 32; k++)
645 if (f4 & (1L << k)) spell[num++] = k + RF4_SPELL_START;
648 /* Extract the "normal" spells */
649 for (k = 0; k < 32; k++)
651 if (f5 & (1L << k)) spell[num++] = k + RF5_SPELL_START;
654 /* Extract the "bizarre" spells */
655 for (k = 0; k < 32; k++)
657 if (f6 & (1L << k)) spell[num++] = k + RF6_SPELL_START;
661 if (!num) return (FALSE);
663 /* Stop if player is dead or gone */
664 if (!p_ptr->playing || p_ptr->is_dead) return (FALSE);
666 /* Handle "leaving" */
667 if (p_ptr->leaving) return (FALSE);
669 /* Get the monster name (or "it") */
670 monster_desc(m_name, m_ptr, 0x00);
673 /* Get the monster possessive ("his"/"her"/"its") */
674 monster_desc(m_poss, m_ptr, MD_PRON_VISIBLE | MD_POSSESSIVE);
677 /* Get the target's name (or "it") */
678 monster_desc(t_name, t_ptr, 0x00);
680 /* Choose a spell to cast */
681 thrown_spell = spell[randint0(num)];
683 if (p_ptr->riding && (m_idx == p_ptr->riding)) disturb(TRUE, TRUE);
685 /* Check for spell failure (inate attacks never fail) */
686 if (!spell_is_inate(thrown_spell) && (in_no_magic_dungeon || (MON_STUNNED(m_ptr) && one_in_(2))))
689 if (see_m) msg_format(_("%^sは呪文を唱えようとしたが失敗した。",
690 "%^s tries to cast a spell, but fails."), m_name);
695 /* Hex: Anti Magic Barrier */
696 if (!spell_is_inate(thrown_spell) && magic_barrier(m_idx))
698 if (see_m) msg_format(_("反魔法バリアが%^sの呪文をかき消した。",
699 "Anti magic barrier cancels the spell which %^s casts."), m_name);
703 can_remember = is_original_ap_and_seen(m_ptr);
705 dam = monspell_to_monster(thrown_spell, y, x, m_idx, target_idx);
706 if (dam < 0) return FALSE;
708 if (m_ptr->ml && maneable && !current_world_ptr->timewalk_m_idx && !p_ptr->blind && (p_ptr->pclass == CLASS_IMITATOR))
710 if (thrown_spell != 167) /* Not RF6_SPECIAL */
712 if (p_ptr->mane_num == MAX_MANE)
715 for (i = 0; i < p_ptr->mane_num - 1; i++)
717 p_ptr->mane_spell[i] = p_ptr->mane_spell[i+1];
718 p_ptr->mane_dam[i] = p_ptr->mane_dam[i+1];
721 p_ptr->mane_spell[p_ptr->mane_num] = thrown_spell - RF4_SPELL_START;
722 p_ptr->mane_dam[p_ptr->mane_num] = dam;
726 p_ptr->redraw |= (PR_IMITATION);
730 /* Remember what the monster did, if we saw it */
734 if (thrown_spell < RF4_SPELL_START + RF4_SPELL_SIZE)
736 r_ptr->r_flags4 |= (1L << (thrown_spell - RF4_SPELL_START));
737 if (r_ptr->r_cast_spell < MAX_UCHAR) r_ptr->r_cast_spell++;
741 else if (thrown_spell < RF5_SPELL_START + RF5_SPELL_SIZE)
743 r_ptr->r_flags5 |= (1L << (thrown_spell - RF5_SPELL_START));
744 if (r_ptr->r_cast_spell < MAX_UCHAR) r_ptr->r_cast_spell++;
748 else if (thrown_spell < RF6_SPELL_START + RF6_SPELL_SIZE)
750 r_ptr->r_flags6 |= (1L << (thrown_spell - RF6_SPELL_START));
751 if (r_ptr->r_cast_spell < MAX_UCHAR) r_ptr->r_cast_spell++;
755 /* Always take note of monsters that kill you */
756 if (p_ptr->is_dead && (r_ptr->r_deaths < MAX_SHORT) && !p_ptr->inside_arena)
758 r_ptr->r_deaths++; /* Ignore appearance difference */
761 /* A spell was cast */