src/warning.c

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