src/combat/shoot.c

   1 #include "combat/shoot.h"
   2 #include "art-definition/art-bow-types.h"
   3 #include "mind/mind-sniper.h"
   4 #include "core/stuff-handler.h"
   5 #include "effect/effect-characteristics.h"
   6 #include "effect/spells-effect-util.h"
   7 #include "floor/floor-object.h"
   8 #include "game-option/special-options.h"
   9 #include "grid/grid.h"
  10 #include "inventory/inventory-object.h"
  11 #include "io/targeting.h"
  12 #include "main/sound-definitions-table.h"
  13 #include "main/sound-of-music.h"
  14 #include "mind/snipe-types.h"
  15 #include "monster-race/race-flags-resistance.h"
  16 #include "monster-race/race-flags1.h"
  17 #include "monster-race/race-flags2.h"
  18 #include "monster-race/race-flags3.h"
  19 #include "monster-race/race-flags7.h"
  20 #include "monster-race/race-indice-types.h"
  21 #include "monster/monster-describer.h"
  22 #include "monster-floor/monster-death.h"
  23 #include "monster/monster-status.h"
  24 #include "monster/monster-info.h"
  25 #include "monster-floor/monster-move.h"
  26 #include "monster/monster-update.h"
  27 #include "mspell/monster-spell.h"
  28 #include "object-enchant/artifact.h"
  29 #include "object-enchant/tr-types.h"
  30 #include "object/object-broken.h"
  31 #include "object/object-flags.h"
  32 #include "object/object-flavor.h"
  33 #include "object/object-generator.h"
  34 #include "object/object-hook.h"
  35 #include "object/object-kind.h"
  36 #include "object/object-mark-types.h"
  37 #include "object/object-info.h"
  38 #include "player/avatar.h"
  39 #include "player/player-class.h"
  40 #include "player/player-personalities-types.h"
  41 #include "player/player-skill.h"
  42 #include "player/player-status.h"
  43 #include "spell/process-effect.h"
  44 #include "spell/spell-types.h"
  45 #include "sv-definition/sv-bow-types.h"
  46 #include "view/display-main-window.h"
  47 #include "view/display-messages.h"
  48 #include "world/world-object.h"
  49
  50 /*!
  51  * @brief 矢弾を射撃した際のスレイ倍率をかけた結果を返す /
  52  * Determines the odds of an object breaking when thrown at a monster
  53  * @param o_ptr 矢弾のオブジェクト構造体参照ポインタ
  54  * @param tdam 計算途中のダメージ量
  55  * @param m_ptr 目標モンスターの構造体参照ポインタ
  56  * @return スレイ倍率をかけたダメージ量
  57  */
  58 static MULTIPLY calc_shot_damage_with_slay(player_type *sniper_ptr, object_type *o_ptr, HIT_POINT tdam, monster_type *m_ptr, SPELL_IDX snipe_type)
  59 {
  60         MULTIPLY mult = 10;
  61
  62         monster_race *r_ptr = &r_info[m_ptr->r_idx];
  63
  64         BIT_FLAGS flgs[TR_FLAG_SIZE];
  65         object_flags(o_ptr, flgs);
  66
  67         /* Some "weapons" and "ammo" do extra damage */
  68         switch (o_ptr->tval)
  69         {
  70         case TV_SHOT:
  71         case TV_ARROW:
  72         case TV_BOLT:
  73         {
  74                 if ((have_flag(flgs, TR_SLAY_ANIMAL)) && (r_ptr->flags3 & RF3_ANIMAL))
  75                 {
  76                         if (is_original_ap_and_seen(sniper_ptr, m_ptr))
  77                         {
  78                                 r_ptr->r_flags3 |= RF3_ANIMAL;
  79                         }
  80                         if (mult < 17) mult = 17;
  81                 }
  82
  83                 if ((have_flag(flgs, TR_KILL_ANIMAL)) && (r_ptr->flags3 & RF3_ANIMAL))
  84                 {
  85                         if (is_original_ap_and_seen(sniper_ptr, m_ptr))
  86                         {
  87                                 r_ptr->r_flags3 |= RF3_ANIMAL;
  88                         }
  89                         if (mult < 27) mult = 27;
  90                 }
  91
  92                 if ((have_flag(flgs, TR_SLAY_EVIL)) && (r_ptr->flags3 & RF3_EVIL))
  93                 {
  94                         if (is_original_ap_and_seen(sniper_ptr, m_ptr))
  95                         {
  96                                 r_ptr->r_flags3 |= RF3_EVIL;
  97                         }
  98                         if (mult < 15) mult = 15;
  99                 }
 100
 101                 if ((have_flag(flgs, TR_KILL_EVIL)) && (r_ptr->flags3 & RF3_EVIL))
 102                 {
 103                         if (is_original_ap_and_seen(sniper_ptr, m_ptr))
 104                         {
 105                                 r_ptr->r_flags3 |= RF3_EVIL;
 106                         }
 107                         if (mult < 25) mult = 25;
 108                 }
 109
 110                 if ((have_flag(flgs, TR_SLAY_HUMAN)) && (r_ptr->flags2 & RF2_HUMAN))
 111                 {
 112                         if (is_original_ap_and_seen(sniper_ptr, m_ptr))
 113                         {
 114                                 r_ptr->r_flags2 |= RF2_HUMAN;
 115                         }
 116                         if (mult < 17) mult = 17;
 117                 }
 118
 119                 if ((have_flag(flgs, TR_KILL_HUMAN)) && (r_ptr->flags2 & RF2_HUMAN))
 120                 {
 121                         if (is_original_ap_and_seen(sniper_ptr, m_ptr))
 122                         {
 123                                 r_ptr->r_flags2 |= RF2_HUMAN;
 124                         }
 125                         if (mult < 27) mult = 27;
 126                 }
 127
 128                 if ((have_flag(flgs, TR_SLAY_UNDEAD)) && (r_ptr->flags3 & RF3_UNDEAD))
 129                 {
 130                         if (is_original_ap_and_seen(sniper_ptr, m_ptr))
 131                         {
 132                                 r_ptr->r_flags3 |= RF3_UNDEAD;
 133                         }
 134                         if (mult < 20) mult = 20;
 135                 }
 136
 137                 if ((have_flag(flgs, TR_KILL_UNDEAD)) && (r_ptr->flags3 & RF3_UNDEAD))
 138                 {
 139                         if (is_original_ap_and_seen(sniper_ptr, m_ptr))
 140                         {
 141                                 r_ptr->r_flags3 |= RF3_UNDEAD;
 142                         }
 143                         if (mult < 30) mult = 30;
 144                 }
 145
 146                 if ((have_flag(flgs, TR_SLAY_DEMON)) && (r_ptr->flags3 & RF3_DEMON))
 147                 {
 148                         if (is_original_ap_and_seen(sniper_ptr, m_ptr))
 149                         {
 150                                 r_ptr->r_flags3 |= RF3_DEMON;
 151                         }
 152                         if (mult < 20) mult = 20;
 153                 }
 154
 155                 if ((have_flag(flgs, TR_KILL_DEMON)) && (r_ptr->flags3 & RF3_DEMON))
 156                 {
 157                         if (is_original_ap_and_seen(sniper_ptr, m_ptr))
 158                         {
 159                                 r_ptr->r_flags3 |= RF3_DEMON;
 160                         }
 161                         if (mult < 30) mult = 30;
 162                 }
 163
 164                 if ((have_flag(flgs, TR_SLAY_ORC)) && (r_ptr->flags3 & RF3_ORC))
 165                 {
 166                         if (is_original_ap_and_seen(sniper_ptr, m_ptr))
 167                         {
 168                                 r_ptr->r_flags3 |= RF3_ORC;
 169                         }
 170                         if (mult < 20) mult = 20;
 171                 }
 172
 173                 if ((have_flag(flgs, TR_KILL_ORC)) && (r_ptr->flags3 & RF3_ORC))
 174                 {
 175                         if (is_original_ap_and_seen(sniper_ptr, m_ptr))
 176                         {
 177                                 r_ptr->r_flags3 |= RF3_ORC;
 178                         }
 179                         if (mult < 30) mult = 30;
 180                 }
 181
 182                 if ((have_flag(flgs, TR_SLAY_TROLL)) && (r_ptr->flags3 & RF3_TROLL))
 183                 {
 184                         if (is_original_ap_and_seen(sniper_ptr, m_ptr))
 185                         {
 186                                 r_ptr->r_flags3 |= RF3_TROLL;
 187                         }
 188
 189                         if (mult < 20) mult = 20;
 190                 }
 191
 192                 if ((have_flag(flgs, TR_KILL_TROLL)) && (r_ptr->flags3 & RF3_TROLL))
 193                 {
 194                         if (is_original_ap_and_seen(sniper_ptr, m_ptr))
 195                         {
 196                                 r_ptr->r_flags3 |= RF3_TROLL;
 197                         }
 198                         if (mult < 30) mult = 30;
 199                 }
 200
 201                 if ((have_flag(flgs, TR_SLAY_GIANT)) && (r_ptr->flags3 & RF3_GIANT))
 202                 {
 203                         if (is_original_ap_and_seen(sniper_ptr, m_ptr))
 204                         {
 205                                 r_ptr->r_flags3 |= RF3_GIANT;
 206                         }
 207                         if (mult < 20) mult = 20;
 208                 }
 209
 210                 if ((have_flag(flgs, TR_KILL_GIANT)) && (r_ptr->flags3 & RF3_GIANT))
 211                 {
 212                         if (is_original_ap_and_seen(sniper_ptr, m_ptr))
 213                         {
 214                                 r_ptr->r_flags3 |= RF3_GIANT;
 215                         }
 216                         if (mult < 30) mult = 30;
 217                 }
 218
 219                 if ((have_flag(flgs, TR_SLAY_DRAGON)) && (r_ptr->flags3 & RF3_DRAGON))
 220                 {
 221                         if (is_original_ap_and_seen(sniper_ptr, m_ptr))
 222                         {
 223                                 r_ptr->r_flags3 |= RF3_DRAGON;
 224                         }
 225                         if (mult < 20) mult = 20;
 226                 }
 227
 228                 if ((have_flag(flgs, TR_KILL_DRAGON)) && (r_ptr->flags3 & RF3_DRAGON))
 229                 {
 230                         if (is_original_ap_and_seen(sniper_ptr, m_ptr))
 231                         {
 232                                 r_ptr->r_flags3 |= RF3_DRAGON;
 233                         }
 234                         if (mult < 30) mult = 30;
 235                         if ((o_ptr->name1 == ART_BARD_ARROW) && (m_ptr->r_idx == MON_SMAUG) &&
 236                                 (sniper_ptr->inventory_list[INVEN_BOW].name1 == ART_BARD))
 237                                 mult *= 5;
 238                 }
 239
 240                 if (have_flag(flgs, TR_BRAND_ACID))
 241                 {
 242                         /* Notice immunity */
 243                         if (r_ptr->flagsr & RFR_EFF_IM_ACID_MASK)
 244                         {
 245                                 if (is_original_ap_and_seen(sniper_ptr, m_ptr))
 246                                 {
 247                                         r_ptr->r_flagsr |= (r_ptr->flagsr & RFR_EFF_IM_ACID_MASK);
 248                                 }
 249                         }
 250                         else
 251                         {
 252                                 if (mult < 17) mult = 17;
 253                         }
 254                 }
 255
 256                 if (have_flag(flgs, TR_BRAND_ELEC))
 257                 {
 258                         /* Notice immunity */
 259                         if (r_ptr->flagsr & RFR_EFF_IM_ELEC_MASK)
 260                         {
 261                                 if (is_original_ap_and_seen(sniper_ptr, m_ptr))
 262                                 {
 263                                         r_ptr->r_flagsr |= (r_ptr->flagsr & RFR_EFF_IM_ELEC_MASK);
 264                                 }
 265                         }
 266                         else
 267                         {
 268                                 if (mult < 17) mult = 17;
 269                         }
 270                 }
 271
 272                 if (have_flag(flgs, TR_BRAND_FIRE))
 273                 {
 274                         /* Notice immunity */
 275                         if (r_ptr->flagsr & RFR_EFF_IM_FIRE_MASK)
 276                         {
 277                                 if (is_original_ap_and_seen(sniper_ptr, m_ptr))
 278                                 {
 279                                         r_ptr->r_flagsr |= (r_ptr->flagsr & RFR_EFF_IM_FIRE_MASK);
 280                                 }
 281                         }
 282                         /* Otherwise, take the damage */
 283                         else
 284                         {
 285                                 if (r_ptr->flags3 & RF3_HURT_FIRE)
 286                                 {
 287                                         if (mult < 25) mult = 25;
 288                                         if (is_original_ap_and_seen(sniper_ptr, m_ptr))
 289                                         {
 290                                                 r_ptr->r_flags3 |= RF3_HURT_FIRE;
 291                                         }
 292                                 }
 293                                 else if (mult < 17) mult = 17;
 294                         }
 295                 }
 296
 297                 if (have_flag(flgs, TR_BRAND_COLD))
 298                 {
 299                         /* Notice immunity */
 300                         if (r_ptr->flagsr & RFR_EFF_IM_COLD_MASK)
 301                         {
 302                                 if (is_original_ap_and_seen(sniper_ptr, m_ptr))
 303                                 {
 304                                         r_ptr->r_flagsr |= (r_ptr->flagsr & RFR_EFF_IM_COLD_MASK);
 305                                 }
 306                         }
 307                         /* Otherwise, take the damage */
 308                         else
 309                         {
 310                                 if (r_ptr->flags3 & RF3_HURT_COLD)
 311                                 {
 312                                         if (mult < 25) mult = 25;
 313                                         if (is_original_ap_and_seen(sniper_ptr, m_ptr))
 314                                         {
 315                                                 r_ptr->r_flags3 |= RF3_HURT_COLD;
 316                                         }
 317                                 }
 318                                 else if (mult < 17) mult = 17;
 319                         }
 320                 }
 321
 322                 if (have_flag(flgs, TR_BRAND_POIS))
 323                 {
 324                         /* Notice immunity */
 325                         if (r_ptr->flagsr & RFR_EFF_IM_POIS_MASK)
 326                         {
 327                                 if (is_original_ap_and_seen(sniper_ptr, m_ptr))
 328                                 {
 329                                         r_ptr->r_flagsr |= (r_ptr->flagsr & RFR_EFF_IM_POIS_MASK);
 330                                 }
 331                         }
 332                         /* Otherwise, take the damage */
 333                         else
 334                         {
 335                                 if (mult < 17) mult = 17;
 336                         }
 337                 }
 338
 339                 if ((have_flag(flgs, TR_FORCE_WEAPON)) && (sniper_ptr->csp > (sniper_ptr->msp / 30)))
 340                 {
 341                         sniper_ptr->csp -= (1 + (sniper_ptr->msp / 30));
 342                         sniper_ptr->redraw |= (PR_MANA);
 343                         mult = mult * 5 / 2;
 344                 }
 345                 break;
 346         }
 347         }
 348
 349         /* Sniper */
 350         if (snipe_type) mult = calc_snipe_damage_with_slay(sniper_ptr, mult, m_ptr, snipe_type);
 351
 352         /* Return the total damage */
 353         return (tdam * mult / 10);
 354 }
 355
 356
 357 /*!
 358  * @brief 射撃処理実行 /
 359  * Fire an object from the pack or floor.
 360  * @param item 射撃するオブジェクトの所持ID
 361  * @param j_ptr 射撃武器のオブジェクト参照ポインタ
 362  * @return なし
 363  * @details
 364  * <pre>
 365  * You may only fire items that "match" your missile launcher.
 366  * You must use slings + pebbles/shots, bows + arrows, xbows + bolts.
 367  * See "calc_bonuses()" for more calculations and such.
 368  * Note that "firing" a missile is MUCH better than "throwing" it.
 369  * Note: "unseen" monsters are very hard to hit.
 370  * Objects are more likely to break if they "attempt" to hit a monster.
 371  * Rangers (with Bows) and Anyone (with "Extra Shots") get extra shots.
 372  * The "extra shot" code works by decreasing the amount of energy
 373  * required to make each shot, spreading the shots out over time.
 374  * Note that when firing missiles, the launcher multiplier is applied
 375  * after all the bonuses are added in, making multipliers very useful.
 376  * Note that Bows of "Extra Might" get extra range and an extra bonus
 377  * for the damage multiplier.
 378  * Note that Bows of "Extra Shots" give an extra shot.
 379  * </pre>
 380  */
 381 void exe_fire(player_type *shooter_ptr, INVENTORY_IDX item, object_type *j_ptr, SPELL_IDX snipe_type)
 382 {
 383         DIRECTION dir;
 384         int i;
 385         POSITION y, x, ny, nx, ty, tx, prev_y, prev_x;
 386         int tdam_base, tdis, thits, tmul;
 387         int bonus, chance;
 388         int cur_dis, visible;
 389         PERCENTAGE j;
 390
 391         object_type forge;
 392         object_type *q_ptr;
 393
 394         object_type *o_ptr;
 395
 396         bool hit_body = FALSE;
 397
 398         GAME_TEXT o_name[MAX_NLEN];
 399
 400         u16b path_g[512];       /* For calcuration of path length */
 401
 402         int msec = delay_factor * delay_factor * delay_factor;
 403
 404         /* STICK TO */
 405         bool stick_to = FALSE;
 406
 407         /* Access the item (if in the pack) */
 408         if (item >= 0)
 409         {
 410                 o_ptr = &shooter_ptr->inventory_list[item];
 411         }
 412         else
 413         {
 414                 o_ptr = &shooter_ptr->current_floor_ptr->o_list[0 - item];
 415         }
 416
 417         /* Sniper - Cannot shot a single arrow twice */
 418         if ((snipe_type == SP_DOUBLE) && (o_ptr->number < 2)) snipe_type = SP_NONE;
 419
 420         object_desc(shooter_ptr, o_name, o_ptr, OD_OMIT_PREFIX);
 421
 422         /* Use the proper number of shots */
 423         thits = shooter_ptr->num_fire;
 424
 425         /* Use a base distance */
 426         tdis = 10;
 427
 428         /* Base damage from thrown object plus launcher bonus */
 429         tdam_base = damroll(o_ptr->dd, o_ptr->ds) + o_ptr->to_d + j_ptr->to_d;
 430
 431         /* Actually "fire" the object */
 432         bonus = (shooter_ptr->to_h_b + o_ptr->to_h + j_ptr->to_h);
 433         if ((j_ptr->sval == SV_LIGHT_XBOW) || (j_ptr->sval == SV_HEAVY_XBOW))
 434                 chance = (shooter_ptr->skill_thb + (shooter_ptr->weapon_exp[0][j_ptr->sval] / 400 + bonus) * BTH_PLUS_ADJ);
 435         else
 436                 chance = (shooter_ptr->skill_thb + ((shooter_ptr->weapon_exp[0][j_ptr->sval] - (WEAPON_EXP_MASTER / 2)) / 200 + bonus) * BTH_PLUS_ADJ);
 437
 438         shooter_ptr->energy_use = bow_energy(j_ptr->sval);
 439         tmul = bow_tmul(j_ptr->sval);
 440
 441         /* Get extra "power" from "extra might" */
 442         if (shooter_ptr->xtra_might) tmul++;
 443
 444         tmul = tmul * (100 + (int)(adj_str_td[shooter_ptr->stat_ind[A_STR]]) - 128);
 445
 446         /* Boost the damage */
 447         tdam_base *= tmul;
 448         tdam_base /= 100;
 449
 450         /* Base range */
 451         tdis = 13 + tmul / 80;
 452         if ((j_ptr->sval == SV_LIGHT_XBOW) || (j_ptr->sval == SV_HEAVY_XBOW))
 453         {
 454                 if (shooter_ptr->concent)
 455                         tdis -= (5 - (shooter_ptr->concent + 1) / 2);
 456                 else
 457                         tdis -= 5;
 458         }
 459
 460         project_length = tdis + 1;
 461
 462         /* Get a direction (or cancel) */
 463         if (!get_aim_dir(shooter_ptr, &dir))
 464         {
 465                 free_turn(shooter_ptr);
 466
 467                 if (snipe_type == SP_AWAY) snipe_type = SP_NONE;
 468
 469                 /* need not to reset project_length (already did)*/
 470
 471                 return;
 472         }
 473
 474         /* Predict the "target" location */
 475         tx = shooter_ptr->x + 99 * ddx[dir];
 476         ty = shooter_ptr->y + 99 * ddy[dir];
 477
 478         /* Check for "target request" */
 479         if ((dir == 5) && target_okay(shooter_ptr))
 480         {
 481                 tx = target_col;
 482                 ty = target_row;
 483         }
 484
 485         /* Get projection path length */
 486         tdis = project_path(shooter_ptr, path_g, project_length, shooter_ptr->y, shooter_ptr->x, ty, tx, PROJECT_PATH | PROJECT_THRU) - 1;
 487
 488         project_length = 0; /* reset to default */
 489
 490         /* Don't shoot at my feet */
 491         if (tx == shooter_ptr->x && ty == shooter_ptr->y)
 492         {
 493                 free_turn(shooter_ptr);
 494
 495                 /* project_length is already reset to 0 */
 496
 497                 return;
 498         }
 499
 500
 501         /* Take a (partial) turn */
 502         shooter_ptr->energy_use = (shooter_ptr->energy_use / thits);
 503         shooter_ptr->is_fired = TRUE;
 504
 505         /* Sniper - Difficult to shot twice at 1 turn */
 506         if (snipe_type == SP_DOUBLE)  shooter_ptr->concent = (shooter_ptr->concent + 1) / 2;
 507
 508         /* Sniper - Repeat shooting when double shots */
 509         for (i = 0; i < ((snipe_type == SP_DOUBLE) ? 2 : 1); i++)
 510         {
 511
 512                 /* Start at the player */
 513                 y = shooter_ptr->y;
 514                 x = shooter_ptr->x;
 515                 q_ptr = &forge;
 516                 object_copy(q_ptr, o_ptr);
 517
 518                 /* Single object */
 519                 q_ptr->number = 1;
 520
 521                 vary_item(shooter_ptr, item, -1);
 522
 523                 sound(SOUND_SHOOT);
 524                 handle_stuff(shooter_ptr);
 525
 526                 prev_y = y;
 527                 prev_x = x;
 528
 529                 /* The shot does not hit yet */
 530                 hit_body = FALSE;
 531
 532                 /* Travel until stopped */
 533                 for (cur_dis = 0; cur_dis <= tdis; )
 534                 {
 535                         grid_type *g_ptr;
 536
 537                         /* Hack -- Stop at the target */
 538                         if ((y == ty) && (x == tx)) break;
 539
 540                         /* Calculate the new location (see "project()") */
 541                         ny = y;
 542                         nx = x;
 543                         mmove2(&ny, &nx, shooter_ptr->y, shooter_ptr->x, ty, tx);
 544
 545                         /* Shatter Arrow */
 546                         if (snipe_type == SP_KILL_WALL)
 547                         {
 548                                 g_ptr = &shooter_ptr->current_floor_ptr->grid_array[ny][nx];
 549
 550                                 if (cave_have_flag_grid(g_ptr, FF_HURT_ROCK) && !g_ptr->m_idx)
 551                                 {
 552                                         if (g_ptr->info & (CAVE_MARK)) msg_print(_("岩が砕け散った。", "Wall rocks were shattered."));
 553                                         /* Forget the wall */
 554                                         g_ptr->info &= ~(CAVE_MARK);
 555                                         shooter_ptr->update |= (PU_VIEW | PU_LITE | PU_FLOW | PU_MON_LITE);
 556
 557                                         /* Destroy the wall */
 558                                         cave_alter_feat(shooter_ptr, ny, nx, FF_HURT_ROCK);
 559
 560                                         hit_body = TRUE;
 561                                         break;
 562                                 }
 563                         }
 564
 565                         /* Stopped by walls/doors */
 566                         if (!cave_have_flag_bold(shooter_ptr->current_floor_ptr, ny, nx, FF_PROJECT) && !shooter_ptr->current_floor_ptr->grid_array[ny][nx].m_idx) break;
 567
 568                         /* Advance the distance */
 569                         cur_dis++;
 570
 571                         /* Sniper */
 572                         if (snipe_type == SP_LITE)
 573                         {
 574                                 shooter_ptr->current_floor_ptr->grid_array[ny][nx].info |= (CAVE_GLOW);
 575                                 note_spot(shooter_ptr, ny, nx);
 576                                 lite_spot(shooter_ptr, ny, nx);
 577                         }
 578
 579                         /* The player can see the (on screen) missile */
 580                         if (panel_contains(ny, nx) && player_can_see_bold(shooter_ptr, ny, nx))
 581                         {
 582                                 char c = object_char(q_ptr);
 583                                 byte a = object_attr(q_ptr);
 584
 585                                 /* Draw, Hilite, Fresh, Pause, Erase */
 586                                 print_rel(shooter_ptr, c, a, ny, nx);
 587                                 move_cursor_relative(ny, nx);
 588                                 Term_fresh();
 589                                 Term_xtra(TERM_XTRA_DELAY, msec);
 590                                 lite_spot(shooter_ptr, ny, nx);
 591                                 Term_fresh();
 592                         }
 593
 594                         /* The player cannot see the missile */
 595                         else
 596                         {
 597                                 /* Pause anyway, for consistancy */
 598                                 Term_xtra(TERM_XTRA_DELAY, msec);
 599                         }
 600
 601                         /* Sniper */
 602                         if (snipe_type == SP_KILL_TRAP)
 603                         {
 604                                 project(shooter_ptr, 0, 0, ny, nx, 0, GF_KILL_TRAP,
 605                                         (PROJECT_JUMP | PROJECT_HIDE | PROJECT_GRID | PROJECT_ITEM), -1);
 606                         }
 607
 608                         /* Sniper */
 609                         if (snipe_type == SP_EVILNESS)
 610                         {
 611                                 shooter_ptr->current_floor_ptr->grid_array[ny][nx].info &= ~(CAVE_GLOW | CAVE_MARK);
 612                                 note_spot(shooter_ptr, ny, nx);
 613                                 lite_spot(shooter_ptr, ny, nx);
 614                         }
 615
 616                         prev_y = y;
 617                         prev_x = x;
 618
 619                         /* Save the new location */
 620                         x = nx;
 621                         y = ny;
 622
 623                         /* Monster here, Try to hit it */
 624                         if (shooter_ptr->current_floor_ptr->grid_array[y][x].m_idx)
 625                         {
 626                                 grid_type *c_mon_ptr = &shooter_ptr->current_floor_ptr->grid_array[y][x];
 627
 628                                 monster_type *m_ptr = &shooter_ptr->current_floor_ptr->m_list[c_mon_ptr->m_idx];
 629                                 monster_race *r_ptr = &r_info[m_ptr->r_idx];
 630
 631                                 /* Check the visibility */
 632                                 visible = m_ptr->ml;
 633
 634                                 /* Note the collision */
 635                                 hit_body = TRUE;
 636
 637                                 if (monster_csleep_remaining(m_ptr))
 638                                 {
 639                                         if (!(r_ptr->flags3 & RF3_EVIL) || one_in_(5)) chg_virtue(shooter_ptr, V_COMPASSION, -1);
 640                                         if (!(r_ptr->flags3 & RF3_EVIL) || one_in_(5)) chg_virtue(shooter_ptr, V_HONOUR, -1);
 641                                 }
 642
 643                                 if ((r_ptr->level + 10) > shooter_ptr->lev)
 644                                 {
 645                                         int now_exp = shooter_ptr->weapon_exp[0][j_ptr->sval];
 646                                         if (now_exp < s_info[shooter_ptr->pclass].w_max[0][j_ptr->sval])
 647                                         {
 648                                                 SUB_EXP amount = 0;
 649                                                 if (now_exp < WEAPON_EXP_BEGINNER) amount = 80;
 650                                                 else if (now_exp < WEAPON_EXP_SKILLED) amount = 25;
 651                                                 else if ((now_exp < WEAPON_EXP_EXPERT) && (shooter_ptr->lev > 19)) amount = 10;
 652                                                 else if (shooter_ptr->lev > 34) amount = 2;
 653                                                 shooter_ptr->weapon_exp[0][j_ptr->sval] += amount;
 654                                                 shooter_ptr->update |= (PU_BONUS);
 655                                         }
 656                                 }
 657
 658                                 if (shooter_ptr->riding)
 659                                 {
 660                                         if ((shooter_ptr->skill_exp[GINOU_RIDING] < s_info[shooter_ptr->pclass].s_max[GINOU_RIDING])
 661                                                 && ((shooter_ptr->skill_exp[GINOU_RIDING] - (RIDING_EXP_BEGINNER * 2)) / 200 < r_info[shooter_ptr->current_floor_ptr->m_list[shooter_ptr->riding].r_idx].level)
 662                                                 && one_in_(2))
 663                                         {
 664                                                 shooter_ptr->skill_exp[GINOU_RIDING] += 1;
 665                                                 shooter_ptr->update |= (PU_BONUS);
 666                                         }
 667                                 }
 668
 669                                 /* Did we hit it (penalize range) */
 670                                 if (test_hit_fire(shooter_ptr, chance - cur_dis, m_ptr, m_ptr->ml, o_name))
 671                                 {
 672                                         bool fear = FALSE;
 673                                         int tdam = tdam_base;
 674
 675                                         /* Get extra damage from concentration */
 676                                         if (shooter_ptr->concent) tdam = boost_concentration_damage(shooter_ptr, tdam);
 677
 678                                         /* Handle unseen monster */
 679                                         if (!visible)
 680                                         {
 681                                                 /* Invisible monster */
 682                                                 msg_format(_("%sが敵を捕捉した。", "The %s finds a mark."), o_name);
 683                                         }
 684
 685                                         /* Handle visible monster */
 686                                         else
 687                                         {
 688                                                 GAME_TEXT m_name[MAX_NLEN];
 689
 690                                                 /* Get "the monster" or "it" */
 691                                                 monster_desc(shooter_ptr, m_name, m_ptr, 0);
 692
 693                                                 msg_format(_("%sが%sに命中した。", "The %s hits %s."), o_name, m_name);
 694
 695                                                 if (m_ptr->ml)
 696                                                 {
 697                                                         if (!shooter_ptr->image) monster_race_track(shooter_ptr, m_ptr->ap_r_idx);
 698                                                         health_track(shooter_ptr, c_mon_ptr->m_idx);
 699                                                 }
 700                                         }
 701
 702                                         if (snipe_type == SP_NEEDLE)
 703                                         {
 704                                                 if ((randint1(randint1(r_ptr->level / (3 + shooter_ptr->concent)) + (8 - shooter_ptr->concent)) == 1)
 705                                                         && !(r_ptr->flags1 & RF1_UNIQUE) && !(r_ptr->flags7 & RF7_UNIQUE2))
 706                                                 {
 707                                                         GAME_TEXT m_name[MAX_NLEN];
 708
 709                                                         /* Get "the monster" or "it" */
 710                                                         monster_desc(shooter_ptr, m_name, m_ptr, 0);
 711
 712                                                         tdam = m_ptr->hp + 1;
 713                                                         msg_format(_("%sの急所に突き刺さった！", "Your shot hit a fatal spot of %s!"), m_name);
 714                                                 }
 715                                                 else tdam = 1;
 716                                         }
 717                                         else
 718                                         {
 719                                                 /* Apply special damage */
 720                                                 tdam = calc_shot_damage_with_slay(shooter_ptr, q_ptr, tdam, m_ptr, snipe_type);
 721                                                 tdam = critical_shot(shooter_ptr, q_ptr->weight, q_ptr->to_h, j_ptr->to_h, tdam);
 722
 723                                                 /* No negative damage */
 724                                                 if (tdam < 0) tdam = 0;
 725
 726                                                 /* Modify the damage */
 727                                                 tdam = mon_damage_mod(shooter_ptr, m_ptr, tdam, FALSE);
 728                                         }
 729
 730                                         msg_format_wizard(CHEAT_MONSTER,
 731                                                 _("%dのダメージを与えた。(残りHP %d/%d(%d))", "You do %d damage. (left HP %d/%d(%d))"),
 732                                                 tdam, m_ptr->hp - tdam, m_ptr->maxhp, m_ptr->max_maxhp);
 733
 734                                         /* Sniper */
 735                                         if (snipe_type == SP_EXPLODE)
 736                                         {
 737                                                 u16b flg = (PROJECT_STOP | PROJECT_JUMP | PROJECT_KILL | PROJECT_GRID);
 738
 739                                                 sound(SOUND_EXPLODE); /* No explode sound - use breath fire instead */
 740                                                 project(shooter_ptr, 0, ((shooter_ptr->concent + 1) / 2 + 1), ny, nx, tdam, GF_MISSILE, flg, -1);
 741                                                 break;
 742                                         }
 743
 744                                         /* Sniper */
 745                                         if (snipe_type == SP_HOLYNESS)
 746                                         {
 747                                                 shooter_ptr->current_floor_ptr->grid_array[ny][nx].info |= (CAVE_GLOW);
 748                                                 note_spot(shooter_ptr, ny, nx);
 749                                                 lite_spot(shooter_ptr, ny, nx);
 750                                         }
 751
 752                                         /* Hit the monster, check for death */
 753                                         if (mon_take_hit(shooter_ptr, c_mon_ptr->m_idx, tdam, &fear, extract_note_dies(real_r_idx(m_ptr))))
 754                                         {
 755                                                 /* Dead monster */
 756                                         }
 757
 758                                         /* No death */
 759                                         else
 760                                         {
 761                                                 /* STICK TO */
 762                                                 if (object_is_fixed_artifact(q_ptr) &&
 763                                                         (shooter_ptr->pclass != CLASS_SNIPER || shooter_ptr->concent == 0))
 764                                                 {
 765                                                         GAME_TEXT m_name[MAX_NLEN];
 766
 767                                                         monster_desc(shooter_ptr, m_name, m_ptr, 0);
 768
 769                                                         stick_to = TRUE;
 770                                                         msg_format(_("%sは%sに突き刺さった！", "%^s is stuck in %s!"), o_name, m_name);
 771                                                 }
 772
 773                                                 message_pain(shooter_ptr, c_mon_ptr->m_idx, tdam);
 774
 775                                                 /* Anger the monster */
 776                                                 if (tdam > 0) anger_monster(shooter_ptr, m_ptr);
 777
 778                                                 if (fear && m_ptr->ml)
 779                                                 {
 780                                                         GAME_TEXT m_name[MAX_NLEN];
 781                                                         sound(SOUND_FLEE);
 782                                                         monster_desc(shooter_ptr, m_name, m_ptr, 0);
 783                                                         msg_format(_("%^sは恐怖して逃げ出した！", "%^s flees in terror!"), m_name);
 784                                                 }
 785
 786                                                 set_target(m_ptr, shooter_ptr->y, shooter_ptr->x);
 787
 788                                                 /* Sniper */
 789                                                 if (snipe_type == SP_RUSH)
 790                                                 {
 791                                                         int n = randint1(5) + 3;
 792                                                         MONSTER_IDX m_idx = c_mon_ptr->m_idx;
 793
 794                                                         for (; cur_dis <= tdis; )
 795                                                         {
 796                                                                 POSITION ox = nx;
 797                                                                 POSITION oy = ny;
 798
 799                                                                 if (!n) break;
 800
 801                                                                 /* Calculate the new location (see "project()") */
 802                                                                 mmove2(&ny, &nx, shooter_ptr->y, shooter_ptr->x, ty, tx);
 803
 804                                                                 /* Stopped by wilderness boundary */
 805                                                                 if (!in_bounds2(shooter_ptr->current_floor_ptr, ny, nx)) break;
 806
 807                                                                 /* Stopped by walls/doors */
 808                                                                 if (!player_can_enter(shooter_ptr, shooter_ptr->current_floor_ptr->grid_array[ny][nx].feat, 0)) break;
 809
 810                                                                 /* Stopped by monsters */
 811                                                                 if (!is_cave_empty_bold(shooter_ptr, ny, nx)) break;
 812
 813                                                                 shooter_ptr->current_floor_ptr->grid_array[ny][nx].m_idx = m_idx;
 814                                                                 shooter_ptr->current_floor_ptr->grid_array[oy][ox].m_idx = 0;
 815
 816                                                                 m_ptr->fx = nx;
 817                                                                 m_ptr->fy = ny;
 818
 819                                                                 update_monster(shooter_ptr, c_mon_ptr->m_idx, TRUE);
 820
 821                                                                 lite_spot(shooter_ptr, ny, nx);
 822                                                                 lite_spot(shooter_ptr, oy, ox);
 823
 824                                                                 Term_fresh();
 825                                                                 Term_xtra(TERM_XTRA_DELAY, msec);
 826
 827                                                                 x = nx;
 828                                                                 y = ny;
 829                                                                 cur_dis++;
 830                                                                 n--;
 831                                                         }
 832                                                 }
 833                                         }
 834                                 }
 835
 836                                 /* Sniper */
 837                                 if (snipe_type == SP_PIERCE)
 838                                 {
 839                                         if (shooter_ptr->concent < 1) break;
 840                                         shooter_ptr->concent--;
 841                                         continue;
 842                                 }
 843
 844                                 /* Stop looking */
 845                                 break;
 846                         }
 847                 }
 848
 849                 /* Chance of breakage (during attacks) */
 850                 j = (hit_body ? breakage_chance(shooter_ptr, q_ptr, shooter_ptr->pclass == CLASS_ARCHER, snipe_type) : 0);
 851
 852                 if (stick_to)
 853                 {
 854                         MONSTER_IDX m_idx = shooter_ptr->current_floor_ptr->grid_array[y][x].m_idx;
 855                         monster_type *m_ptr = &shooter_ptr->current_floor_ptr->m_list[m_idx];
 856                         OBJECT_IDX o_idx = o_pop(shooter_ptr->current_floor_ptr);
 857
 858                         if (!o_idx)
 859                         {
 860                                 msg_format(_("%sはどこかへ行った。", "The %s went somewhere."), o_name);
 861                                 if (object_is_fixed_artifact(q_ptr))
 862                                 {
 863                                         a_info[j_ptr->name1].cur_num = 0;
 864                                 }
 865                                 return;
 866                         }
 867
 868                         o_ptr = &shooter_ptr->current_floor_ptr->o_list[o_idx];
 869                         object_copy(o_ptr, q_ptr);
 870
 871                         /* Forget mark */
 872                         o_ptr->marked &= OM_TOUCHED;
 873
 874                         /* Forget location */
 875                         o_ptr->iy = o_ptr->ix = 0;
 876
 877                         /* Memorize monster */
 878                         o_ptr->held_m_idx = m_idx;
 879
 880                         /* Build a stack */
 881                         o_ptr->next_o_idx = m_ptr->hold_o_idx;
 882
 883                         /* Carry object */
 884                         m_ptr->hold_o_idx = o_idx;
 885                 }
 886                 else if (cave_have_flag_bold(shooter_ptr->current_floor_ptr, y, x, FF_PROJECT))
 887                 {
 888                         /* Drop (or break) near that location */
 889                         (void)drop_near(shooter_ptr, q_ptr, j, y, x);
 890                 }
 891                 else
 892                 {
 893                         /* Drop (or break) near that location */
 894                         (void)drop_near(shooter_ptr, q_ptr, j, prev_y, prev_x);
 895                 }
 896
 897                 /* Sniper - Repeat shooting when double shots */
 898         }
 899
 900         /* Sniper - Loose his/her concentration after any shot */
 901         if (shooter_ptr->concent) reset_concentration(shooter_ptr, FALSE);
 902 }
 903
 904
 905 /*!
 906 * @brief プレイヤーからモンスターへの射撃命中判定 /
 907 * Determine if the player "hits" a monster (normal combat).
 908 * @param chance 基本命中値
 909 * @param m_ptr モンスターの構造体参照ポインタ
 910 * @param vis 目標を視界に捕らえているならばTRUEを指定
 911 * @param o_name メッセージ表示時のモンスター名
 912 * @return 命中と判定された場合TRUEを返す
 913 * @note Always miss 5%, always hit 5%, otherwise random.
 914 */
 915 bool test_hit_fire(player_type *shooter_ptr, int chance, monster_type *m_ptr, int vis, char* o_name)
 916 {
 917         int k;
 918         ARMOUR_CLASS ac;
 919         monster_race *r_ptr = &r_info[m_ptr->r_idx];
 920
 921         /* Percentile dice */
 922         k = randint1(100);
 923
 924         /* Snipers with high-concentration reduce instant miss percentage.*/
 925         k += shooter_ptr->concent;
 926
 927         /* Hack -- Instant miss or hit */
 928         if (k <= 5) return FALSE;
 929         if (k > 95) return TRUE;
 930
 931         if (shooter_ptr->pseikaku == PERSONALITY_LAZY)
 932                 if (one_in_(20)) return FALSE;
 933
 934         /* Never hit */
 935         if (chance <= 0) return FALSE;
 936
 937         ac = r_ptr->ac;
 938         if (shooter_ptr->concent)
 939         {
 940                 ac *= (8 - shooter_ptr->concent);
 941                 ac /= 8;
 942         }
 943
 944         if (m_ptr->r_idx == MON_GOEMON && !monster_csleep_remaining(m_ptr)) ac *= 3;
 945
 946         /* Invisible monsters are harder to hit */
 947         if (!vis) chance = (chance + 1) / 2;
 948
 949         /* Power competes against armor */
 950         if (randint0(chance) < (ac * 3 / 4))
 951         {
 952                 if (m_ptr->r_idx == MON_GOEMON && !monster_csleep_remaining(m_ptr))
 953                 {
 954                         GAME_TEXT m_name[MAX_NLEN];
 955                         monster_desc(shooter_ptr, m_name, m_ptr, 0);
 956                         msg_format(_("%sは%sを斬り捨てた！", "%s cuts down %s!"), m_name, o_name);
 957                 }
 958                 return FALSE;
 959         }
 960
 961         /* Assume hit */
 962         return TRUE;
 963 }
 964
 965
 966
 967
 968 /*!
 969 * @brief プレイヤーからモンスターへの射撃クリティカル判定 /
 970 * Critical hits (from objects thrown by player) Factor in item weight, total plusses, and player level.
 971 * @param weight 矢弾の重量
 972 * @param plus_ammo 矢弾の命中修正
 973 * @param plus_bow 弓の命中修正
 974 * @param dam 現在算出中のダメージ値
 975 * @return クリティカル修正が入ったダメージ値
 976 */
 977 HIT_POINT critical_shot(player_type *shooter_ptr, WEIGHT weight, int plus_ammo, int plus_bow, HIT_POINT dam)
 978 {
 979         int i, k;
 980         object_type *j_ptr = &shooter_ptr->inventory_list[INVEN_BOW];
 981
 982         /* Extract "shot" power */
 983         i = shooter_ptr->to_h_b + plus_ammo;
 984
 985         if (shooter_ptr->tval_ammo == TV_BOLT)
 986                 i = (shooter_ptr->skill_thb + (shooter_ptr->weapon_exp[0][j_ptr->sval] / 400 + i) * BTH_PLUS_ADJ);
 987         else
 988                 i = (shooter_ptr->skill_thb + ((shooter_ptr->weapon_exp[0][j_ptr->sval] - (WEAPON_EXP_MASTER / 2)) / 200 + i) * BTH_PLUS_ADJ);
 989
 990
 991         /* Snipers can shot more critically with crossbows */
 992         if (shooter_ptr->concent) i += ((i * shooter_ptr->concent) / 5);
 993         if ((shooter_ptr->pclass == CLASS_SNIPER) && (shooter_ptr->tval_ammo == TV_BOLT)) i *= 2;
 994
 995         /* Good bow makes more critical */
 996         i += plus_bow * 8 * (shooter_ptr->concent ? shooter_ptr->concent + 5 : 5);
 997
 998         /* Critical hit */
 999         if (randint1(10000) <= i)
1000         {
1001                 k = weight * randint1(500);
1002
1003                 if (k < 900)
1004                 {
1005                         msg_print(_("手ごたえがあった！", "It was a good hit!"));
1006                         dam += (dam / 2);
1007                 }
1008                 else if (k < 1350)
1009                 {
1010                         msg_print(_("かなりの手ごたえがあった！", "It was a great hit!"));
1011                         dam *= 2;
1012                 }
1013                 else
1014                 {
1015                         msg_print(_("会心の一撃だ！", "It was a superb hit!"));
1016                         dam *= 3;
1017                 }
1018         }
1019
1020         return (dam);
1021 }
1022
1023
1024
1025
1026 /*!
1027  * @brief 射撃武器の攻撃に必要な基本消費エネルギーを返す/Return bow energy
1028  * @param sval 射撃武器のアイテム副分類ID
1029  * @return 消費する基本エネルギー
1030  */
1031 ENERGY bow_energy(OBJECT_SUBTYPE_VALUE sval)
1032 {
1033         ENERGY energy = 10000;
1034
1035         /* Analyze the launcher */
1036         switch (sval)
1037         {
1038                 /* Sling and ammo */
1039         case SV_SLING:
1040         {
1041                 energy = 8000;
1042                 break;
1043         }
1044
1045         /* Short Bow and Arrow */
1046         case SV_SHORT_BOW:
1047         {
1048                 energy = 10000;
1049                 break;
1050         }
1051
1052         /* Long Bow and Arrow */
1053         case SV_LONG_BOW:
1054         {
1055                 energy = 10000;
1056                 break;
1057         }
1058
1059         /* Bow of irresponsiblity and Arrow */
1060         case SV_NAMAKE_BOW:
1061         {
1062                 energy = 7777;
1063                 break;
1064         }
1065
1066         /* Light Crossbow and Bolt */
1067         case SV_LIGHT_XBOW:
1068         {
1069                 energy = 12000;
1070                 break;
1071         }
1072
1073         /* Heavy Crossbow and Bolt */
1074         case SV_HEAVY_XBOW:
1075         {
1076                 energy = 13333;
1077                 break;
1078         }
1079         }
1080
1081         return (energy);
1082 }
1083
1084
1085 /*
1086  * Return bow tmul
1087  */
1088 int bow_tmul(OBJECT_SUBTYPE_VALUE sval)
1089 {
1090         int tmul = 0;
1091
1092         /* Analyze the launcher */
1093         switch (sval)
1094         {
1095                 /* Sling and ammo */
1096         case SV_SLING:
1097         {
1098                 tmul = 2;
1099                 break;
1100         }
1101
1102         /* Short Bow and Arrow */
1103         case SV_SHORT_BOW:
1104         {
1105                 tmul = 2;
1106                 break;
1107         }
1108
1109         /* Long Bow and Arrow */
1110         case SV_LONG_BOW:
1111         {
1112                 tmul = 3;
1113                 break;
1114         }
1115
1116         /* Bow of irresponsiblity and Arrow */
1117         case SV_NAMAKE_BOW:
1118         {
1119                 tmul = 3;
1120                 break;
1121         }
1122
1123         /* Light Crossbow and Bolt */
1124         case SV_LIGHT_XBOW:
1125         {
1126                 tmul = 3;
1127                 break;
1128         }
1129
1130         /* Heavy Crossbow and Bolt */
1131         case SV_HEAVY_XBOW:
1132         {
1133                 tmul = 4;
1134                 break;
1135         }
1136         }
1137
1138         return (tmul);
1139 }
1140
1141
1142 /*!
1143  * @brief 射撃時クリティカルによるダメージ期待値修正計算（スナイパーの集中処理と武器経験値） / critical happens at i / 10000
1144  * @param shooter_ptr 射撃を行うクリーチャー参照ポインタ
1145  * @param plus_ammo 矢弾のダメージ修正
1146  * @param plus_bow 弓のダメージ修正
1147  * @return ダメージ期待値
1148  * @note 基本ダメージ量と重量はこの部位では計算に加わらない。
1149  */
1150 HIT_POINT calc_crit_ratio_shot(player_type* shooter_ptr, HIT_POINT plus_ammo, HIT_POINT plus_bow)
1151 {
1152         HIT_POINT i;
1153         object_type *j_ptr = &shooter_ptr->inventory_list[INVEN_BOW];
1154
1155         /* Extract "shot" power */
1156         i = shooter_ptr->to_h_b + plus_ammo;
1157
1158         if (shooter_ptr->tval_ammo == TV_BOLT)
1159                 i = (shooter_ptr->skill_thb + (shooter_ptr->weapon_exp[0][j_ptr->sval] / 400 + i) * BTH_PLUS_ADJ);
1160         else
1161                 i = (shooter_ptr->skill_thb + ((shooter_ptr->weapon_exp[0][j_ptr->sval] - (WEAPON_EXP_MASTER / 2)) / 200 + i) * BTH_PLUS_ADJ);
1162
1163         /* Snipers can shot more critically with crossbows */
1164         if (shooter_ptr->concent) i += ((i * shooter_ptr->concent) / 5);
1165         if ((shooter_ptr->pclass == CLASS_SNIPER) && (shooter_ptr->tval_ammo == TV_BOLT)) i *= 2;
1166
1167         /* Good bow makes more critical */
1168         i += plus_bow * 8 * (shooter_ptr->concent ? shooter_ptr->concent + 5 : 5);
1169
1170         if (i < 0) i = 0;
1171
1172         return i;
1173 }
1174
1175 /*!
1176  * @brief 射撃時クリティカルによるダメージ期待値修正計算（重量依存部分） / critical happens at i / 10000
1177  * @param weight 武器の重量
1178  * @param plus_ammo 矢弾のダメージ修正
1179  * @param plus_bow 弓のダメージ修正
1180  * @param dam 基本ダメージ量
1181  * @return ダメージ期待値
1182  */
1183 HIT_POINT calc_expect_crit_shot(player_type *shooter_ptr, WEIGHT weight, int plus_ammo, int plus_bow, HIT_POINT dam)
1184 {
1185         u32b num;
1186         int i, k, crit;
1187         i = calc_crit_ratio_shot(shooter_ptr, plus_ammo, plus_bow);
1188
1189         k = 0;
1190         num = 0;
1191
1192         crit = MIN(500, 900 / weight);
1193         num += dam * 3 / 2 * crit;
1194         k = crit;
1195
1196         crit = MIN(500, 1350 / weight);
1197         crit -= k;
1198         num += dam * 2 * crit;
1199         k += crit;
1200
1201         if (k < 500)
1202         {
1203                 crit = 500 - k;
1204                 num += dam * 3 * crit;
1205         }
1206
1207         num /= 500;
1208
1209         num *= i;
1210         num += (10000 - i) * dam;
1211         num /= 10000;
1212
1213         return num;
1214 }
1215
1216 /*!
1217  * @brief 攻撃時クリティカルによるダメージ期待値修正計算（重量と毒針処理） / critical happens at i / 10000
1218  * @param shooter_ptr プレーヤーへの参照ポインタ
1219  * @param weight 武器の重量
1220  * @param plus 武器のダメージ修正
1221  * @param dam 基本ダメージ
1222  * @param meichuu 命中値
1223  * @param dokubari 毒針処理か否か
1224  * @return ダメージ期待値
1225  */
1226 HIT_POINT calc_expect_crit(player_type *shooter_ptr, WEIGHT weight, int plus, HIT_POINT dam, s16b meichuu, bool dokubari)
1227 {
1228         u32b k, num;
1229         if (dokubari) return dam;
1230
1231         int i = (weight + (meichuu * 3 + plus * 5) + shooter_ptr->skill_thn);
1232         if (i < 0) i = 0;
1233
1234         k = weight;
1235         num = 0;
1236
1237         if (k < 400)                                            num += (2 * dam + 5) * (400 - k);
1238         if (k < 700)                                            num += (2 * dam + 10) * (MIN(700, k + 650) - MAX(400, k));
1239         if (k > (700 - 650) && k < 900)         num += (3 * dam + 15) * (MIN(900, k + 650) - MAX(700, k));
1240         if (k > (900 - 650) && k < 1300)                num += (3 * dam + 20) * (MIN(1300, k + 650) - MAX(900, k));
1241         if (k > (1300 - 650))                                   num += (7 * dam / 2 + 25) * MIN(650, k - (1300 - 650));
1242
1243         num /= 650;
1244         if (shooter_ptr->pclass == CLASS_NINJA)
1245         {
1246                 num *= i;
1247                 num += (4444 - i) * dam;
1248                 num /= 4444;
1249         }
1250         else
1251         {
1252                 num *= i;
1253                 num += (5000 - i) * dam;
1254                 num /= 5000;
1255         }
1256
1257         return num;
1258 }
1259