src/warning.c

   1
   2 #include "angband.h"
   3 #include "util.h"
   4
   5 #include "artifact.h"
   6 #include "player-move.h"
   7 #include "feature.h"
   8 #include "floor/floor.h"
   9 #include "warning.h"
  10 #include "player-status.h"
  11 #include "monster.h"
  12 #include "monster-spell.h"
  13 #include "spell/spells-type.h"
  14 #include "object-flavor.h"
  15 #include "dungeon/dungeon.h"
  16 #include "player/mimic-info-table.h"
  17 #include "player-class.h"
  18 #include "melee.h"
  19
  20 /*!
  21  * @brief 警告を放つアイテムを選択する /
  22  * Choose one of items that have warning flag
  23  * Calculate spell damages
  24  * @return 警告を行う
  25  */
  26 object_type *choose_warning_item(player_type *creature_ptr)
  27 {
  28         int choices[INVEN_TOTAL - INVEN_RARM];
  29
  30         /* Paranoia -- Player has no warning ability */
  31         if (!creature_ptr->warning) return NULL;
  32
  33         /* Search Inventory */
  34         int number = 0;
  35         for (int i = INVEN_RARM; i < INVEN_TOTAL; i++)
  36         {
  37                 BIT_FLAGS flgs[TR_FLAG_SIZE];
  38                 object_type *o_ptr = &creature_ptr->inventory_list[i];
  39
  40                 object_flags(o_ptr, flgs);
  41                 if (have_flag(flgs, TR_WARNING))
  42                 {
  43                         choices[number] = i;
  44                         number++;
  45                 }
  46         }
  47
  48         /* Choice one of them */
  49         return number ? &creature_ptr->inventory_list[choices[randint0(number)]] : NULL;
  50 }
  51
  52 /*!
  53  * @brief 警告基準を定めるために魔法の効果属性に基づいて最大魔法ダメージを計算する /
  54  * Calculate spell damages
  55  * @param m_ptr 魔法を行使するモンスターの構造体参照ポインタ
  56  * @param typ 効果属性のID
  57  * @param dam 基本ダメージ
  58  * @param max 算出した最大ダメージを返すポインタ
  59  * @return なし
  60  */
  61 static void spell_damcalc(player_type *target_ptr, monster_type *m_ptr, EFFECT_ID typ, HIT_POINT dam, int *max)
  62 {
  63         monster_race *r_ptr = &r_info[m_ptr->r_idx];
  64         int rlev = r_ptr->level;
  65         bool ignore_wraith_form = FALSE;
  66
  67         /* Vulnerability, resistance and immunity */
  68         switch (typ)
  69         {
  70         case GF_ELEC:
  71                 if (target_ptr->immune_elec)
  72                 {
  73                         dam = 0;
  74                         ignore_wraith_form = TRUE;
  75                         break;
  76                 }
  77
  78                 if (target_ptr->muta3 & MUT3_VULN_ELEM) dam *= 2;
  79                 if (target_ptr->special_defense & KATA_KOUKIJIN) dam += dam / 3;
  80                 if (PRACE_IS_(target_ptr, RACE_ANDROID)) dam += dam / 3;
  81                 if (target_ptr->resist_elec) dam = (dam + 2) / 3;
  82                 if (is_oppose_elec(target_ptr)) dam = (dam + 2) / 3;
  83                 break;
  84
  85         case GF_POIS:
  86                 if (target_ptr->resist_pois) dam = (dam + 2) / 3;
  87                 if (is_oppose_pois(target_ptr)) dam = (dam + 2) / 3;
  88                 break;
  89
  90         case GF_ACID:
  91                 if (target_ptr->immune_acid)
  92                 {
  93                         dam = 0;
  94                         ignore_wraith_form = TRUE;
  95                         break;
  96                 }
  97
  98                 if (target_ptr->muta3 & MUT3_VULN_ELEM) dam *= 2;
  99                 if (target_ptr->special_defense & KATA_KOUKIJIN) dam += dam / 3;
 100                 if (target_ptr->resist_acid) dam = (dam + 2) / 3;
 101                 if (is_oppose_acid(target_ptr)) dam = (dam + 2) / 3;
 102                 break;
 103
 104         case GF_COLD:
 105         case GF_ICE:
 106                 if (target_ptr->immune_cold)
 107                 {
 108                         dam = 0;
 109                         ignore_wraith_form = TRUE;
 110                         break;
 111                 }
 112
 113                 if (target_ptr->muta3 & MUT3_VULN_ELEM) dam *= 2;
 114                 if (target_ptr->special_defense & KATA_KOUKIJIN) dam += dam / 3;
 115                 if (target_ptr->resist_cold) dam = (dam + 2) / 3;
 116                 if (is_oppose_cold(target_ptr)) dam = (dam + 2) / 3;
 117                 break;
 118
 119         case GF_FIRE:
 120                 if (target_ptr->immune_fire)
 121                 {
 122                         dam = 0;
 123                         ignore_wraith_form = TRUE;
 124                         break;
 125                 }
 126
 127                 if (target_ptr->muta3 & MUT3_VULN_ELEM) dam *= 2;
 128                 if (PRACE_IS_(target_ptr, RACE_ENT)) dam += dam / 3;
 129                 if (target_ptr->special_defense & KATA_KOUKIJIN) dam += dam / 3;
 130                 if (target_ptr->resist_fire) dam = (dam + 2) / 3;
 131                 if (is_oppose_fire(target_ptr)) dam = (dam + 2) / 3;
 132                 break;
 133
 134         case GF_PSY_SPEAR:
 135                 ignore_wraith_form = TRUE;
 136                 break;
 137
 138         case GF_ARROW:
 139                 if (!target_ptr->blind &&
 140                         ((target_ptr->inventory_list[INVEN_RARM].k_idx && (target_ptr->inventory_list[INVEN_RARM].name1 == ART_ZANTETSU)) ||
 141                         (target_ptr->inventory_list[INVEN_LARM].k_idx && (target_ptr->inventory_list[INVEN_LARM].name1 == ART_ZANTETSU))))
 142                 {
 143                         dam = 0;
 144                         ignore_wraith_form = TRUE;
 145                 }
 146
 147                 break;
 148
 149         case GF_LITE:
 150                 if (target_ptr->resist_lite) dam /= 2; /* Worst case of 4 / (d4 + 7) */
 151                 if (PRACE_IS_(target_ptr, RACE_VAMPIRE) || (target_ptr->mimic_form == MIMIC_VAMPIRE)) dam *= 2;
 152                 else if (PRACE_IS_(target_ptr, RACE_S_FAIRY)) dam = dam * 4 / 3;
 153
 154                 if (target_ptr->wraith_form) dam *= 2;
 155                 break;
 156
 157         case GF_DARK:
 158                 if (PRACE_IS_(target_ptr, RACE_VAMPIRE) || (target_ptr->mimic_form == MIMIC_VAMPIRE) || target_ptr->wraith_form)
 159                 {
 160                         dam = 0;
 161                         ignore_wraith_form = TRUE;
 162                 }
 163                 else if (target_ptr->resist_dark) dam /= 2; /* Worst case of 4 / (d4 + 7) */
 164                 break;
 165
 166         case GF_SHARDS:
 167                 if (target_ptr->resist_shard) dam = dam * 3 / 4; /* Worst case of 6 / (d4 + 7) */
 168                 break;
 169
 170         case GF_SOUND:
 171                 if (target_ptr->resist_sound) dam = dam * 5 / 8; /* Worst case of 5 / (d4 + 7) */
 172                 break;
 173
 174         case GF_CONFUSION:
 175                 if (target_ptr->resist_conf) dam = dam * 5 / 8; /* Worst case of 5 / (d4 + 7) */
 176                 break;
 177
 178         case GF_CHAOS:
 179                 if (target_ptr->resist_chaos) dam = dam * 3 / 4; /* Worst case of 6 / (d4 + 7) */
 180                 break;
 181
 182         case GF_NETHER:
 183                 if (PRACE_IS_(target_ptr, RACE_SPECTRE))
 184                 {
 185                         dam = 0;
 186                         ignore_wraith_form = TRUE;
 187                 }
 188                 else if (target_ptr->resist_neth) dam = dam * 3 / 4; /* Worst case of 6 / (d4 + 7) */
 189                 break;
 190
 191         case GF_DISENCHANT:
 192                 if (target_ptr->resist_disen) dam = dam * 3 / 4; /* Worst case of 6 / (d4 + 7) */
 193                 break;
 194
 195         case GF_NEXUS:
 196                 if (target_ptr->resist_nexus) dam = dam * 3 / 4; /* Worst case of 6 / (d4 + 7) */
 197                 break;
 198
 199         case GF_TIME:
 200                 if (target_ptr->resist_time) dam /= 2; /* Worst case of 4 / (d4 + 7) */
 201                 break;
 202
 203         case GF_GRAVITY:
 204                 if (target_ptr->levitation) dam = (dam * 2) / 3;
 205                 break;
 206
 207         case GF_ROCKET:
 208                 if (target_ptr->resist_shard) dam /= 2;
 209                 break;
 210
 211         case GF_NUKE:
 212                 if (target_ptr->resist_pois) dam = (2 * dam + 2) / 5;
 213                 if (is_oppose_pois(target_ptr)) dam = (2 * dam + 2) / 5;
 214                 break;
 215
 216         case GF_DEATH_RAY:
 217                 if (target_ptr->mimic_form)
 218                 {
 219                         if (mimic_info[target_ptr->mimic_form].MIMIC_FLAGS & MIMIC_IS_NONLIVING)
 220                         {
 221                                 dam = 0;
 222                                 ignore_wraith_form = TRUE;
 223                         }
 224
 225                         break;
 226                 }
 227
 228                 switch (target_ptr->prace)
 229                 {
 230                 case RACE_GOLEM:
 231                 case RACE_SKELETON:
 232                 case RACE_ZOMBIE:
 233                 case RACE_VAMPIRE:
 234                 case RACE_DEMON:
 235                 case RACE_SPECTRE:
 236                         dam = 0;
 237                         ignore_wraith_form = TRUE;
 238                         break;
 239                 }
 240
 241                 break;
 242
 243         case GF_HOLY_FIRE:
 244                 if (target_ptr->align > 10) dam /= 2;
 245                 else if (target_ptr->align < -10) dam *= 2;
 246                 break;
 247
 248         case GF_HELL_FIRE:
 249                 if (target_ptr->align > 10) dam *= 2;
 250                 break;
 251
 252         case GF_MIND_BLAST:
 253         case GF_BRAIN_SMASH:
 254                 if (100 + rlev / 2 <= MAX(5, target_ptr->skill_sav))
 255                 {
 256                         dam = 0;
 257                         ignore_wraith_form = TRUE;
 258                 }
 259
 260                 break;
 261
 262         case GF_CAUSE_1:
 263         case GF_CAUSE_2:
 264         case GF_CAUSE_3:
 265         case GF_HAND_DOOM:
 266                 if (100 + rlev / 2 <= target_ptr->skill_sav)
 267                 {
 268                         dam = 0;
 269                         ignore_wraith_form = TRUE;
 270                 }
 271
 272                 break;
 273
 274         case GF_CAUSE_4:
 275                 if ((100 + rlev / 2 <= target_ptr->skill_sav) && (m_ptr->r_idx != MON_KENSHIROU))
 276                 {
 277                         dam = 0;
 278                         ignore_wraith_form = TRUE;
 279                 }
 280
 281                 break;
 282         }
 283
 284         if (target_ptr->wraith_form && !ignore_wraith_form)
 285         {
 286                 dam /= 2;
 287                 if (!dam) dam = 1;
 288         }
 289
 290         if (dam > *max) *max = dam;
 291 }
 292
 293 /*!
 294 * @brief 警告基準を定めるために魔法の効果属性に基づいて最大魔法ダメージを計算する。 /
 295 * Calculate spell damages
 296 * @param spell_num RF4ならRF4_SPELL_STARTのように32区切りのベースとなる数値
 297 * @param typ 効果属性のID
 298 * @param m_idx 魔法を行使するモンスターのID
 299 * @param max 算出した最大ダメージを返すポインタ
 300 * @return なし
 301 */
 302 void spell_damcalc_by_spellnum(player_type *creature_ptr, int spell_num, EFFECT_ID typ, MONSTER_IDX m_idx, int *max)
 303 {
 304         monster_type *m_ptr = &creature_ptr->current_floor_ptr->m_list[m_idx];
 305         HIT_POINT dam = monspell_damage(creature_ptr, spell_num, m_idx, DAM_MAX);
 306         spell_damcalc(creature_ptr, m_ptr, typ, dam, max);
 307 }
 308
 309 /*!
 310  * @brief 警告基準を定めるためにモンスターの打撃最大ダメージを算出する /
 311  * Calculate blow damages
 312  * @param m_ptr 打撃を行使するモンスターの構造体参照ポインタ
 313  * @param blow_ptr モンスターの打撃能力の構造体参照ポインタ
 314  * @return 算出された最大ダメージを返す。
 315  */
 316 static int blow_damcalc(monster_type *m_ptr, player_type *target_ptr, monster_blow *blow_ptr)
 317 {
 318         int dam = blow_ptr->d_dice * blow_ptr->d_side;
 319         int dummy_max = 0;
 320
 321         if (blow_ptr->method == RBM_EXPLODE)
 322         {
 323                 dam = (dam + 1) / 2;
 324                 spell_damcalc(target_ptr, m_ptr, mbe_info[blow_ptr->effect].explode_type, dam, &dummy_max);
 325                 dam = dummy_max;
 326                 return dam;
 327         }
 328
 329         ARMOUR_CLASS ac = target_ptr->ac + target_ptr->to_a;
 330         bool check_wraith_form = TRUE;
 331         switch (blow_ptr->effect)
 332         {
 333         case RBE_SUPERHURT:
 334         {
 335                 int tmp_dam = dam - (dam * ((ac < 150) ? ac : 150) / 250);
 336                 dam = MAX(dam, tmp_dam * 2);
 337                 break;
 338         }
 339
 340         case RBE_HURT:
 341         case RBE_SHATTER:
 342                 dam -= (dam * ((ac < 150) ? ac : 150) / 250);
 343                 break;
 344
 345         case RBE_ACID:
 346                 spell_damcalc(target_ptr, m_ptr, GF_ACID, dam, &dummy_max);
 347                 dam = dummy_max;
 348                 check_wraith_form = FALSE;
 349                 break;
 350
 351         case RBE_ELEC:
 352                 spell_damcalc(target_ptr, m_ptr, GF_ELEC, dam, &dummy_max);
 353                 dam = dummy_max;
 354                 check_wraith_form = FALSE;
 355                 break;
 356
 357         case RBE_FIRE:
 358                 spell_damcalc(target_ptr, m_ptr, GF_FIRE, dam, &dummy_max);
 359                 dam = dummy_max;
 360                 check_wraith_form = FALSE;
 361                 break;
 362
 363         case RBE_COLD:
 364                 spell_damcalc(target_ptr, m_ptr, GF_COLD, dam, &dummy_max);
 365                 dam = dummy_max;
 366                 check_wraith_form = FALSE;
 367                 break;
 368
 369         case RBE_DR_MANA:
 370                 dam = 0;
 371                 check_wraith_form = FALSE;
 372                 break;
 373         }
 374
 375         if (check_wraith_form && target_ptr->wraith_form)
 376         {
 377                 dam /= 2;
 378                 if (!dam) dam = 1;
 379         }
 380
 381         return dam;
 382 }
 383
 384
 385 /*!
 386  * @brief プレイヤーが特定地点へ移動した場合に警告を発する処理 /
 387  * Examine the grid (xx,yy) and warn the player if there are any danger
 388  * @param xx 危険性を調査するマスのX座標
 389  * @param yy 危険性を調査するマスのY座標
 390  * @return 警告を無視して進むことを選択するかか問題が無ければTRUE、警告に従ったならFALSEを返す。
 391  */
 392 bool process_warning(player_type *creature_ptr, POSITION xx, POSITION yy)
 393 {
 394         POSITION mx, my;
 395         grid_type *g_ptr;
 396         GAME_TEXT o_name[MAX_NLEN];
 397
 398 #define WARNING_AWARE_RANGE 12
 399         int dam_max = 0;
 400         static int old_damage = 0;
 401
 402         for (mx = xx - WARNING_AWARE_RANGE; mx < xx + WARNING_AWARE_RANGE + 1; mx++)
 403         {
 404                 for (my = yy - WARNING_AWARE_RANGE; my < yy + WARNING_AWARE_RANGE + 1; my++)
 405                 {
 406                         int dam_max0 = 0;
 407                         monster_type *m_ptr;
 408                         monster_race *r_ptr;
 409
 410                         if (!in_bounds(creature_ptr->current_floor_ptr, my, mx) || (distance(my, mx, yy, xx) > WARNING_AWARE_RANGE)) continue;
 411
 412                         g_ptr = &creature_ptr->current_floor_ptr->grid_array[my][mx];
 413
 414                         if (!g_ptr->m_idx) continue;
 415
 416                         m_ptr = &creature_ptr->current_floor_ptr->m_list[g_ptr->m_idx];
 417
 418                         if (MON_CSLEEP(m_ptr)) continue;
 419                         if (!is_hostile(m_ptr)) continue;
 420
 421                         r_ptr = &r_info[m_ptr->r_idx];
 422
 423                         /* Monster spells (only powerful ones)*/
 424                         if (projectable(creature_ptr, my, mx, yy, xx))
 425                         {
 426                                 BIT_FLAGS f4 = r_ptr->flags4;
 427                                 BIT_FLAGS f5 = r_ptr->a_ability_flags1;
 428                                 BIT_FLAGS f6 = r_ptr->a_ability_flags2;
 429
 430                                 if (!(d_info[creature_ptr->dungeon_idx].flags1 & DF1_NO_MAGIC))
 431                                 {
 432                                         if (f4 & RF4_BA_CHAO) spell_damcalc_by_spellnum(creature_ptr, MS_BALL_CHAOS, GF_CHAOS, g_ptr->m_idx, &dam_max0);
 433                                         if (f5 & RF5_BA_MANA) spell_damcalc_by_spellnum(creature_ptr, MS_BALL_MANA, GF_MANA, g_ptr->m_idx, &dam_max0);
 434                                         if (f5 & RF5_BA_DARK) spell_damcalc_by_spellnum(creature_ptr, MS_BALL_DARK, GF_DARK, g_ptr->m_idx, &dam_max0);
 435                                         if (f5 & RF5_BA_LITE) spell_damcalc_by_spellnum(creature_ptr, MS_STARBURST, GF_LITE, g_ptr->m_idx, &dam_max0);
 436                                         if (f6 & RF6_HAND_DOOM) spell_damcalc_by_spellnum(creature_ptr, MS_HAND_DOOM, GF_HAND_DOOM, g_ptr->m_idx, &dam_max0);
 437                                         if (f6 & RF6_PSY_SPEAR) spell_damcalc_by_spellnum(creature_ptr, MS_PSY_SPEAR, GF_PSY_SPEAR, g_ptr->m_idx, &dam_max0);
 438                                 }
 439
 440                                 if (f4 & RF4_ROCKET) spell_damcalc_by_spellnum(creature_ptr, MS_ROCKET, GF_ROCKET, g_ptr->m_idx, &dam_max0);
 441                                 if (f4 & RF4_BR_ACID) spell_damcalc_by_spellnum(creature_ptr, MS_BR_ACID, GF_ACID, g_ptr->m_idx, &dam_max0);
 442                                 if (f4 & RF4_BR_ELEC) spell_damcalc_by_spellnum(creature_ptr, MS_BR_ELEC, GF_ELEC, g_ptr->m_idx, &dam_max0);
 443                                 if (f4 & RF4_BR_FIRE) spell_damcalc_by_spellnum(creature_ptr, MS_BR_FIRE, GF_FIRE, g_ptr->m_idx, &dam_max0);
 444                                 if (f4 & RF4_BR_COLD) spell_damcalc_by_spellnum(creature_ptr, MS_BR_COLD, GF_COLD, g_ptr->m_idx, &dam_max0);
 445                                 if (f4 & RF4_BR_POIS) spell_damcalc_by_spellnum(creature_ptr, MS_BR_POIS, GF_POIS, g_ptr->m_idx, &dam_max0);
 446                                 if (f4 & RF4_BR_NETH) spell_damcalc_by_spellnum(creature_ptr, MS_BR_NETHER, GF_NETHER, g_ptr->m_idx, &dam_max0);
 447                                 if (f4 & RF4_BR_LITE) spell_damcalc_by_spellnum(creature_ptr, MS_BR_LITE, GF_LITE, g_ptr->m_idx, &dam_max0);
 448                                 if (f4 & RF4_BR_DARK) spell_damcalc_by_spellnum(creature_ptr, MS_BR_DARK, GF_DARK, g_ptr->m_idx, &dam_max0);
 449                                 if (f4 & RF4_BR_CONF) spell_damcalc_by_spellnum(creature_ptr, MS_BR_CONF, GF_CONFUSION, g_ptr->m_idx, &dam_max0);
 450                                 if (f4 & RF4_BR_SOUN) spell_damcalc_by_spellnum(creature_ptr, MS_BR_SOUND, GF_SOUND, g_ptr->m_idx, &dam_max0);
 451                                 if (f4 & RF4_BR_CHAO) spell_damcalc_by_spellnum(creature_ptr, MS_BR_CHAOS, GF_CHAOS, g_ptr->m_idx, &dam_max0);
 452                                 if (f4 & RF4_BR_DISE) spell_damcalc_by_spellnum(creature_ptr, MS_BR_DISEN, GF_DISENCHANT, g_ptr->m_idx, &dam_max0);
 453                                 if (f4 & RF4_BR_NEXU) spell_damcalc_by_spellnum(creature_ptr, MS_BR_NEXUS, GF_NEXUS, g_ptr->m_idx, &dam_max0);
 454                                 if (f4 & RF4_BR_TIME) spell_damcalc_by_spellnum(creature_ptr, MS_BR_TIME, GF_TIME, g_ptr->m_idx, &dam_max0);
 455                                 if (f4 & RF4_BR_INER) spell_damcalc_by_spellnum(creature_ptr, MS_BR_INERTIA, GF_INERTIAL, g_ptr->m_idx, &dam_max0);
 456                                 if (f4 & RF4_BR_GRAV) spell_damcalc_by_spellnum(creature_ptr, MS_BR_GRAVITY, GF_GRAVITY, g_ptr->m_idx, &dam_max0);
 457                                 if (f4 & RF4_BR_SHAR) spell_damcalc_by_spellnum(creature_ptr, MS_BR_SHARDS, GF_SHARDS, g_ptr->m_idx, &dam_max0);
 458                                 if (f4 & RF4_BR_PLAS) spell_damcalc_by_spellnum(creature_ptr, MS_BR_PLASMA, GF_PLASMA, g_ptr->m_idx, &dam_max0);
 459                                 if (f4 & RF4_BR_WALL) spell_damcalc_by_spellnum(creature_ptr, MS_BR_FORCE, GF_FORCE, g_ptr->m_idx, &dam_max0);
 460                                 if (f4 & RF4_BR_MANA) spell_damcalc_by_spellnum(creature_ptr, MS_BR_MANA, GF_MANA, g_ptr->m_idx, &dam_max0);
 461                                 if (f4 & RF4_BR_NUKE) spell_damcalc_by_spellnum(creature_ptr, MS_BR_NUKE, GF_NUKE, g_ptr->m_idx, &dam_max0);
 462                                 if (f4 & RF4_BR_DISI) spell_damcalc_by_spellnum(creature_ptr, MS_BR_DISI, GF_DISINTEGRATE, g_ptr->m_idx, &dam_max0);
 463                         }
 464
 465                         /* Monster melee attacks */
 466                         if ((r_ptr->flags1 & RF1_NEVER_BLOW) || (d_info[creature_ptr->dungeon_idx].flags1 & DF1_NO_MELEE))
 467                         {
 468                                 dam_max += dam_max0;
 469                                 continue;
 470                         }
 471
 472                         if (!(mx <= xx + 1 && mx >= xx - 1 && my <= yy + 1 && my >= yy - 1))
 473                         {
 474                                 dam_max += dam_max0;
 475                                 continue;
 476                         }
 477
 478                         int dam_melee = 0;
 479                         for (int m = 0; m < 4; m++)
 480                         {
 481                                 /* Skip non-attacks */
 482                                 if (!r_ptr->blow[m].method || (r_ptr->blow[m].method == RBM_SHOOT)) continue;
 483
 484                                 /* Extract the attack info */
 485                                 dam_melee += blow_damcalc(m_ptr, creature_ptr, &r_ptr->blow[m]);
 486                                 if (r_ptr->blow[m].method == RBM_EXPLODE) break;
 487                         }
 488
 489                         if (dam_melee > dam_max0) dam_max0 = dam_melee;
 490                         dam_max += dam_max0;
 491                 }
 492         }
 493
 494         /* Prevent excessive warning */
 495         if (dam_max > old_damage)
 496         {
 497                 old_damage = dam_max * 3 / 2;
 498
 499                 if (dam_max > creature_ptr->chp / 2)
 500                 {
 501                         object_type *o_ptr = choose_warning_item(creature_ptr);
 502
 503                         if (o_ptr)
 504                                 object_desc(creature_ptr, o_name, o_ptr, (OD_OMIT_PREFIX | OD_NAME_ONLY));
 505                         else
 506                                 strcpy(o_name, _("体", "body")); /* Warning ability without item */
 507                         msg_format(_("%sが鋭く震えた！", "Your %s pulsates sharply!"), o_name);
 508
 509                         disturb(creature_ptr, FALSE, TRUE);
 510                         return get_check(_("本当にこのまま進むか？", "Really want to go ahead? "));
 511                 }
 512         }
 513         else old_damage = old_damage / 2;
 514
 515         g_ptr = &creature_ptr->current_floor_ptr->grid_array[yy][xx];
 516         bool is_warning = (!easy_disarm && is_trap(creature_ptr, g_ptr->feat)) || (g_ptr->mimic && is_trap(creature_ptr, g_ptr->feat));
 517         is_warning &= !one_in_(13);
 518         if (!is_warning) return TRUE;
 519
 520         object_type *o_ptr = choose_warning_item(creature_ptr);
 521         if (o_ptr != NULL)
 522                 object_desc(creature_ptr, o_name, o_ptr, (OD_OMIT_PREFIX | OD_NAME_ONLY));
 523         else
 524                 strcpy(o_name, _("体", "body")); /* Warning ability without item */
 525         msg_format(_("%sが鋭く震えた！", "Your %s pulsates sharply!"), o_name);
 526         disturb(creature_ptr, FALSE, TRUE);
 527         return get_check(_("本当にこのまま進むか？", "Really want to go ahead? "));
 528 }