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 "grid/grid.h"
   9 #include "inventory/inventory-object.h"
  10 #include "io/targeting.h"
  11 #include "main/sound-definitions-table.h"
  12 #include "mind/snipe-types.h"
  13 #include "monster-race/race-flags-resistance.h"
  14 #include "monster-race/race-flags1.h"
  15 #include "monster-race/race-flags2.h"
  16 #include "monster-race/race-flags3.h"
  17 #include "monster-race/race-flags7.h"
  18 #include "monster-race/race-indice-types.h"
  19 #include "monster/monster-status.h"
  20 #include "monster/monster1.h"
  21 #include "monster/monster2.h"
  22 #include "mspell/monster-spell.h"
  23 #include "object-enchant/artifact.h"
  24 #include "object-enchant/tr-types.h"
  25 #include "object/object-broken.h"
  26 #include "object/object-flags.h"
  27 #include "object/object-flavor.h"
  28 #include "object/object-generator.h"
  29 #include "object/object-hook.h"
  30 #include "object/object-kind.h"
  31 #include "object/object-mark-types.h"
  32 #include "object/object-info.h"
  33 #include "player/avatar.h"
  34 #include "player/player-class.h"
  35 #include "player/player-personalities-table.h"
  36 #include "player/player-skill.h"
  37 #include "player/player-status.h"
  38 #include "spell/process-effect.h"
  39 #include "spell/spells-type.h"
  40 #include "sv-definition/sv-bow-types.h"
  41 #include "util/util.h"
  42 #include "view/display-main-window.h"
  43 #include "world/world-object.h"
  44
  45 /*!
  46  * @brief 矢弾を射撃した際のスレイ倍率をかけた結果を返す /
  47  * Determines the odds of an object breaking when thrown at a monster
  48  * @param o_ptr 矢弾のオブジェクト構造体参照ポインタ
  49  * @param tdam 計算途中のダメージ量
  50  * @param m_ptr 目標モンスターの構造体参照ポインタ
  51  * @return スレイ倍率をかけたダメージ量
  52  */
  53 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)
  54 {
  55         MULTIPLY mult = 10;
  56
  57         monster_race *r_ptr = &r_info[m_ptr->r_idx];
  58
  59         BIT_FLAGS flgs[TR_FLAG_SIZE];
  60         object_flags(o_ptr, flgs);
  61
  62         /* Some "weapons" and "ammo" do extra damage */
  63         switch (o_ptr->tval)
  64         {
  65         case TV_SHOT:
  66         case TV_ARROW:
  67         case TV_BOLT:
  68         {
  69                 if ((have_flag(flgs, TR_SLAY_ANIMAL)) && (r_ptr->flags3 & RF3_ANIMAL))
  70                 {
  71                         if (is_original_ap_and_seen(sniper_ptr, m_ptr))
  72                         {
  73                                 r_ptr->r_flags3 |= RF3_ANIMAL;
  74                         }
  75                         if (mult < 17) mult = 17;
  76                 }
  77
  78                 if ((have_flag(flgs, TR_KILL_ANIMAL)) && (r_ptr->flags3 & RF3_ANIMAL))
  79                 {
  80                         if (is_original_ap_and_seen(sniper_ptr, m_ptr))
  81                         {
  82                                 r_ptr->r_flags3 |= RF3_ANIMAL;
  83                         }
  84                         if (mult < 27) mult = 27;
  85                 }
  86
  87                 if ((have_flag(flgs, TR_SLAY_EVIL)) && (r_ptr->flags3 & RF3_EVIL))
  88                 {
  89                         if (is_original_ap_and_seen(sniper_ptr, m_ptr))
  90                         {
  91                                 r_ptr->r_flags3 |= RF3_EVIL;
  92                         }
  93                         if (mult < 15) mult = 15;
  94                 }
  95
  96                 if ((have_flag(flgs, TR_KILL_EVIL)) && (r_ptr->flags3 & RF3_EVIL))
  97                 {
  98                         if (is_original_ap_and_seen(sniper_ptr, m_ptr))
  99                         {
 100                                 r_ptr->r_flags3 |= RF3_EVIL;
 101                         }
 102                         if (mult < 25) mult = 25;
 103                 }
 104
 105                 if ((have_flag(flgs, TR_SLAY_HUMAN)) && (r_ptr->flags2 & RF2_HUMAN))
 106                 {
 107                         if (is_original_ap_and_seen(sniper_ptr, m_ptr))
 108                         {
 109                                 r_ptr->r_flags2 |= RF2_HUMAN;
 110                         }
 111                         if (mult < 17) mult = 17;
 112                 }
 113
 114                 if ((have_flag(flgs, TR_KILL_HUMAN)) && (r_ptr->flags2 & RF2_HUMAN))
 115                 {
 116                         if (is_original_ap_and_seen(sniper_ptr, m_ptr))
 117                         {
 118                                 r_ptr->r_flags2 |= RF2_HUMAN;
 119                         }
 120                         if (mult < 27) mult = 27;
 121                 }
 122
 123                 if ((have_flag(flgs, TR_SLAY_UNDEAD)) && (r_ptr->flags3 & RF3_UNDEAD))
 124                 {
 125                         if (is_original_ap_and_seen(sniper_ptr, m_ptr))
 126                         {
 127                                 r_ptr->r_flags3 |= RF3_UNDEAD;
 128                         }
 129                         if (mult < 20) mult = 20;
 130                 }
 131
 132                 if ((have_flag(flgs, TR_KILL_UNDEAD)) && (r_ptr->flags3 & RF3_UNDEAD))
 133                 {
 134                         if (is_original_ap_and_seen(sniper_ptr, m_ptr))
 135                         {
 136                                 r_ptr->r_flags3 |= RF3_UNDEAD;
 137                         }
 138                         if (mult < 30) mult = 30;
 139                 }
 140
 141                 if ((have_flag(flgs, TR_SLAY_DEMON)) && (r_ptr->flags3 & RF3_DEMON))
 142                 {
 143                         if (is_original_ap_and_seen(sniper_ptr, m_ptr))
 144                         {
 145                                 r_ptr->r_flags3 |= RF3_DEMON;
 146                         }
 147                         if (mult < 20) mult = 20;
 148                 }
 149
 150                 if ((have_flag(flgs, TR_KILL_DEMON)) && (r_ptr->flags3 & RF3_DEMON))
 151                 {
 152                         if (is_original_ap_and_seen(sniper_ptr, m_ptr))
 153                         {
 154                                 r_ptr->r_flags3 |= RF3_DEMON;
 155                         }
 156                         if (mult < 30) mult = 30;
 157                 }
 158
 159                 if ((have_flag(flgs, TR_SLAY_ORC)) && (r_ptr->flags3 & RF3_ORC))
 160                 {
 161                         if (is_original_ap_and_seen(sniper_ptr, m_ptr))
 162                         {
 163                                 r_ptr->r_flags3 |= RF3_ORC;
 164                         }
 165                         if (mult < 20) mult = 20;
 166                 }
 167
 168                 if ((have_flag(flgs, TR_KILL_ORC)) && (r_ptr->flags3 & RF3_ORC))
 169                 {
 170                         if (is_original_ap_and_seen(sniper_ptr, m_ptr))
 171                         {
 172                                 r_ptr->r_flags3 |= RF3_ORC;
 173                         }
 174                         if (mult < 30) mult = 30;
 175                 }
 176
 177                 if ((have_flag(flgs, TR_SLAY_TROLL)) && (r_ptr->flags3 & RF3_TROLL))
 178                 {
 179                         if (is_original_ap_and_seen(sniper_ptr, m_ptr))
 180                         {
 181                                 r_ptr->r_flags3 |= RF3_TROLL;
 182                         }
 183
 184                         if (mult < 20) mult = 20;
 185                 }
 186
 187                 if ((have_flag(flgs, TR_KILL_TROLL)) && (r_ptr->flags3 & RF3_TROLL))
 188                 {
 189                         if (is_original_ap_and_seen(sniper_ptr, m_ptr))
 190                         {
 191                                 r_ptr->r_flags3 |= RF3_TROLL;
 192                         }
 193                         if (mult < 30) mult = 30;
 194                 }
 195
 196                 if ((have_flag(flgs, TR_SLAY_GIANT)) && (r_ptr->flags3 & RF3_GIANT))
 197                 {
 198                         if (is_original_ap_and_seen(sniper_ptr, m_ptr))
 199                         {
 200                                 r_ptr->r_flags3 |= RF3_GIANT;
 201                         }
 202                         if (mult < 20) mult = 20;
 203                 }
 204
 205                 if ((have_flag(flgs, TR_KILL_GIANT)) && (r_ptr->flags3 & RF3_GIANT))
 206                 {
 207                         if (is_original_ap_and_seen(sniper_ptr, m_ptr))
 208                         {
 209                                 r_ptr->r_flags3 |= RF3_GIANT;
 210                         }
 211                         if (mult < 30) mult = 30;
 212                 }
 213
 214                 if ((have_flag(flgs, TR_SLAY_DRAGON)) && (r_ptr->flags3 & RF3_DRAGON))
 215                 {
 216                         if (is_original_ap_and_seen(sniper_ptr, m_ptr))
 217                         {
 218                                 r_ptr->r_flags3 |= RF3_DRAGON;
 219                         }
 220                         if (mult < 20) mult = 20;
 221                 }
 222
 223                 if ((have_flag(flgs, TR_KILL_DRAGON)) && (r_ptr->flags3 & RF3_DRAGON))
 224                 {
 225                         if (is_original_ap_and_seen(sniper_ptr, m_ptr))
 226                         {
 227                                 r_ptr->r_flags3 |= RF3_DRAGON;
 228                         }
 229                         if (mult < 30) mult = 30;
 230                         if ((o_ptr->name1 == ART_BARD_ARROW) && (m_ptr->r_idx == MON_SMAUG) &&
 231                                 (sniper_ptr->inventory_list[INVEN_BOW].name1 == ART_BARD))
 232                                 mult *= 5;
 233                 }
 234
 235                 if (have_flag(flgs, TR_BRAND_ACID))
 236                 {
 237                         /* Notice immunity */
 238                         if (r_ptr->flagsr & RFR_EFF_IM_ACID_MASK)
 239                         {
 240                                 if (is_original_ap_and_seen(sniper_ptr, m_ptr))
 241                                 {
 242                                         r_ptr->r_flagsr |= (r_ptr->flagsr & RFR_EFF_IM_ACID_MASK);
 243                                 }
 244                         }
 245                         else
 246                         {
 247                                 if (mult < 17) mult = 17;
 248                         }
 249                 }
 250
 251                 if (have_flag(flgs, TR_BRAND_ELEC))
 252                 {
 253                         /* Notice immunity */
 254                         if (r_ptr->flagsr & RFR_EFF_IM_ELEC_MASK)
 255                         {
 256                                 if (is_original_ap_and_seen(sniper_ptr, m_ptr))
 257                                 {
 258                                         r_ptr->r_flagsr |= (r_ptr->flagsr & RFR_EFF_IM_ELEC_MASK);
 259                                 }
 260                         }
 261                         else
 262                         {
 263                                 if (mult < 17) mult = 17;
 264                         }
 265                 }
 266
 267                 if (have_flag(flgs, TR_BRAND_FIRE))
 268                 {
 269                         /* Notice immunity */
 270                         if (r_ptr->flagsr & RFR_EFF_IM_FIRE_MASK)
 271                         {
 272                                 if (is_original_ap_and_seen(sniper_ptr, m_ptr))
 273                                 {
 274                                         r_ptr->r_flagsr |= (r_ptr->flagsr & RFR_EFF_IM_FIRE_MASK);
 275                                 }
 276                         }
 277                         /* Otherwise, take the damage */
 278                         else
 279                         {
 280                                 if (r_ptr->flags3 & RF3_HURT_FIRE)
 281                                 {
 282                                         if (mult < 25) mult = 25;
 283                                         if (is_original_ap_and_seen(sniper_ptr, m_ptr))
 284                                         {
 285                                                 r_ptr->r_flags3 |= RF3_HURT_FIRE;
 286                                         }
 287                                 }
 288                                 else if (mult < 17) mult = 17;
 289                         }
 290                 }
 291
 292                 if (have_flag(flgs, TR_BRAND_COLD))
 293                 {
 294                         /* Notice immunity */
 295                         if (r_ptr->flagsr & RFR_EFF_IM_COLD_MASK)
 296                         {
 297                                 if (is_original_ap_and_seen(sniper_ptr, m_ptr))
 298                                 {
 299                                         r_ptr->r_flagsr |= (r_ptr->flagsr & RFR_EFF_IM_COLD_MASK);
 300                                 }
 301                         }
 302                         /* Otherwise, take the damage */
 303                         else
 304                         {
 305                                 if (r_ptr->flags3 & RF3_HURT_COLD)
 306                                 {
 307                                         if (mult < 25) mult = 25;
 308                                         if (is_original_ap_and_seen(sniper_ptr, m_ptr))
 309                                         {
 310                                                 r_ptr->r_flags3 |= RF3_HURT_COLD;
 311                                         }
 312                                 }
 313                                 else if (mult < 17) mult = 17;
 314                         }
 315                 }
 316
 317                 if (have_flag(flgs, TR_BRAND_POIS))
 318                 {
 319                         /* Notice immunity */
 320                         if (r_ptr->flagsr & RFR_EFF_IM_POIS_MASK)
 321                         {
 322                                 if (is_original_ap_and_seen(sniper_ptr, m_ptr))
 323                                 {
 324                                         r_ptr->r_flagsr |= (r_ptr->flagsr & RFR_EFF_IM_POIS_MASK);
 325                                 }
 326                         }
 327                         /* Otherwise, take the damage */
 328                         else
 329                         {
 330                                 if (mult < 17) mult = 17;
 331                         }
 332                 }
 333
 334                 if ((have_flag(flgs, TR_FORCE_WEAPON)) && (sniper_ptr->csp > (sniper_ptr->msp / 30)))
 335                 {
 336                         sniper_ptr->csp -= (1 + (sniper_ptr->msp / 30));
 337                         sniper_ptr->redraw |= (PR_MANA);
 338                         mult = mult * 5 / 2;
 339                 }
 340                 break;
 341         }
 342         }
 343
 344         /* Sniper */
 345         if (snipe_type) mult = calc_snipe_damage_with_slay(sniper_ptr, mult, m_ptr, snipe_type);
 346
 347         /* Return the total damage */
 348         return (tdam * mult / 10);
 349 }
 350
 351
 352 /*!
 353  * @brief 射撃処理実行 /
 354  * Fire an object from the pack or floor.
 355  * @param item 射撃するオブジェクトの所持ID
 356  * @param j_ptr 射撃武器のオブジェクト参照ポインタ
 357  * @return なし
 358  * @details
 359  * <pre>
 360  * You may only fire items that "match" your missile launcher.
 361  * You must use slings + pebbles/shots, bows + arrows, xbows + bolts.
 362  * See "calc_bonuses()" for more calculations and such.
 363  * Note that "firing" a missile is MUCH better than "throwing" it.
 364  * Note: "unseen" monsters are very hard to hit.
 365  * Objects are more likely to break if they "attempt" to hit a monster.
 366  * Rangers (with Bows) and Anyone (with "Extra Shots") get extra shots.
 367  * The "extra shot" code works by decreasing the amount of energy
 368  * required to make each shot, spreading the shots out over time.
 369  * Note that when firing missiles, the launcher multiplier is applied
 370  * after all the bonuses are added in, making multipliers very useful.
 371  * Note that Bows of "Extra Might" get extra range and an extra bonus
 372  * for the damage multiplier.
 373  * Note that Bows of "Extra Shots" give an extra shot.
 374  * </pre>
 375  */
 376 void exe_fire(player_type *shooter_ptr, INVENTORY_IDX item, object_type *j_ptr, SPELL_IDX snipe_type)
 377 {
 378         DIRECTION dir;
 379         int i;
 380         POSITION y, x, ny, nx, ty, tx, prev_y, prev_x;
 381         int tdam_base, tdis, thits, tmul;
 382         int bonus, chance;
 383         int cur_dis, visible;
 384         PERCENTAGE j;
 385
 386         object_type forge;
 387         object_type *q_ptr;
 388
 389         object_type *o_ptr;
 390
 391         bool hit_body = FALSE;
 392
 393         GAME_TEXT o_name[MAX_NLEN];
 394
 395         u16b path_g[512];       /* For calcuration of path length */
 396
 397         int msec = delay_factor * delay_factor * delay_factor;
 398
 399         /* STICK TO */
 400         bool stick_to = FALSE;
 401
 402         /* Access the item (if in the pack) */
 403         if (item >= 0)
 404         {
 405                 o_ptr = &shooter_ptr->inventory_list[item];
 406         }
 407         else
 408         {
 409                 o_ptr = &shooter_ptr->current_floor_ptr->o_list[0 - item];
 410         }
 411
 412         /* Sniper - Cannot shot a single arrow twice */
 413         if ((snipe_type == SP_DOUBLE) && (o_ptr->number < 2)) snipe_type = SP_NONE;
 414
 415         object_desc(shooter_ptr, o_name, o_ptr, OD_OMIT_PREFIX);
 416
 417         /* Use the proper number of shots */
 418         thits = shooter_ptr->num_fire;
 419
 420         /* Use a base distance */
 421         tdis = 10;
 422
 423         /* Base damage from thrown object plus launcher bonus */
 424         tdam_base = damroll(o_ptr->dd, o_ptr->ds) + o_ptr->to_d + j_ptr->to_d;
 425
 426         /* Actually "fire" the object */
 427         bonus = (shooter_ptr->to_h_b + o_ptr->to_h + j_ptr->to_h);
 428         if ((j_ptr->sval == SV_LIGHT_XBOW) || (j_ptr->sval == SV_HEAVY_XBOW))
 429                 chance = (shooter_ptr->skill_thb + (shooter_ptr->weapon_exp[0][j_ptr->sval] / 400 + bonus) * BTH_PLUS_ADJ);
 430         else
 431                 chance = (shooter_ptr->skill_thb + ((shooter_ptr->weapon_exp[0][j_ptr->sval] - (WEAPON_EXP_MASTER / 2)) / 200 + bonus) * BTH_PLUS_ADJ);
 432
 433         shooter_ptr->energy_use = bow_energy(j_ptr->sval);
 434         tmul = bow_tmul(j_ptr->sval);
 435
 436         /* Get extra "power" from "extra might" */
 437         if (shooter_ptr->xtra_might) tmul++;
 438
 439         tmul = tmul * (100 + (int)(adj_str_td[shooter_ptr->stat_ind[A_STR]]) - 128);
 440
 441         /* Boost the damage */
 442         tdam_base *= tmul;
 443         tdam_base /= 100;
 444
 445         /* Base range */
 446         tdis = 13 + tmul / 80;
 447         if ((j_ptr->sval == SV_LIGHT_XBOW) || (j_ptr->sval == SV_HEAVY_XBOW))
 448         {
 449                 if (shooter_ptr->concent)
 450                         tdis -= (5 - (shooter_ptr->concent + 1) / 2);
 451                 else
 452                         tdis -= 5;
 453         }
 454
 455         project_length = tdis + 1;
 456
 457         /* Get a direction (or cancel) */
 458         if (!get_aim_dir(shooter_ptr, &dir))
 459         {
 460                 free_turn(shooter_ptr);
 461
 462                 if (snipe_type == SP_AWAY) snipe_type = SP_NONE;
 463
 464                 /* need not to reset project_length (already did)*/
 465
 466                 return;
 467         }
 468
 469         /* Predict the "target" location */
 470         tx = shooter_ptr->x + 99 * ddx[dir];
 471         ty = shooter_ptr->y + 99 * ddy[dir];
 472
 473         /* Check for "target request" */
 474         if ((dir == 5) && target_okay(shooter_ptr))
 475         {
 476                 tx = target_col;
 477                 ty = target_row;
 478         }
 479
 480         /* Get projection path length */
 481         tdis = project_path(shooter_ptr, path_g, project_length, shooter_ptr->y, shooter_ptr->x, ty, tx, PROJECT_PATH | PROJECT_THRU) - 1;
 482
 483         project_length = 0; /* reset to default */
 484
 485         /* Don't shoot at my feet */
 486         if (tx == shooter_ptr->x && ty == shooter_ptr->y)
 487         {
 488                 free_turn(shooter_ptr);
 489
 490                 /* project_length is already reset to 0 */
 491
 492                 return;
 493         }
 494
 495
 496         /* Take a (partial) turn */
 497         shooter_ptr->energy_use = (shooter_ptr->energy_use / thits);
 498         shooter_ptr->is_fired = TRUE;
 499
 500         /* Sniper - Difficult to shot twice at 1 turn */
 501         if (snipe_type == SP_DOUBLE)  shooter_ptr->concent = (shooter_ptr->concent + 1) / 2;
 502
 503         /* Sniper - Repeat shooting when double shots */
 504         for (i = 0; i < ((snipe_type == SP_DOUBLE) ? 2 : 1); i++)
 505         {
 506
 507                 /* Start at the player */
 508                 y = shooter_ptr->y;
 509                 x = shooter_ptr->x;
 510                 q_ptr = &forge;
 511                 object_copy(q_ptr, o_ptr);
 512
 513                 /* Single object */
 514                 q_ptr->number = 1;
 515
 516                 vary_item(shooter_ptr, item, -1);
 517
 518                 sound(SOUND_SHOOT);
 519                 handle_stuff(shooter_ptr);
 520
 521                 prev_y = y;
 522                 prev_x = x;
 523
 524                 /* The shot does not hit yet */
 525                 hit_body = FALSE;
 526
 527                 /* Travel until stopped */
 528                 for (cur_dis = 0; cur_dis <= tdis; )
 529                 {
 530                         grid_type *g_ptr;
 531
 532                         /* Hack -- Stop at the target */
 533                         if ((y == ty) && (x == tx)) break;
 534
 535                         /* Calculate the new location (see "project()") */
 536                         ny = y;
 537                         nx = x;
 538                         mmove2(&ny, &nx, shooter_ptr->y, shooter_ptr->x, ty, tx);
 539
 540                         /* Shatter Arrow */
 541                         if (snipe_type == SP_KILL_WALL)
 542                         {
 543                                 g_ptr = &shooter_ptr->current_floor_ptr->grid_array[ny][nx];
 544
 545                                 if (cave_have_flag_grid(g_ptr, FF_HURT_ROCK) && !g_ptr->m_idx)
 546                                 {
 547                                         if (g_ptr->info & (CAVE_MARK)) msg_print(_("岩が砕け散った。", "Wall rocks were shattered."));
 548                                         /* Forget the wall */
 549                                         g_ptr->info &= ~(CAVE_MARK);
 550                                         shooter_ptr->update |= (PU_VIEW | PU_LITE | PU_FLOW | PU_MON_LITE);
 551
 552                                         /* Destroy the wall */
 553                                         cave_alter_feat(shooter_ptr, ny, nx, FF_HURT_ROCK);
 554
 555                                         hit_body = TRUE;
 556                                         break;
 557                                 }
 558                         }
 559
 560                         /* Stopped by walls/doors */
 561                         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;
 562
 563                         /* Advance the distance */
 564                         cur_dis++;
 565
 566                         /* Sniper */
 567                         if (snipe_type == SP_LITE)
 568                         {
 569                                 shooter_ptr->current_floor_ptr->grid_array[ny][nx].info |= (CAVE_GLOW);
 570                                 note_spot(shooter_ptr, ny, nx);
 571                                 lite_spot(shooter_ptr, ny, nx);
 572                         }
 573
 574                         /* The player can see the (on screen) missile */
 575                         if (panel_contains(ny, nx) && player_can_see_bold(shooter_ptr, ny, nx))
 576                         {
 577                                 char c = object_char(q_ptr);
 578                                 byte a = object_attr(q_ptr);
 579
 580                                 /* Draw, Hilite, Fresh, Pause, Erase */
 581                                 print_rel(shooter_ptr, c, a, ny, nx);
 582                                 move_cursor_relative(ny, nx);
 583                                 Term_fresh();
 584                                 Term_xtra(TERM_XTRA_DELAY, msec);
 585                                 lite_spot(shooter_ptr, ny, nx);
 586                                 Term_fresh();
 587                         }
 588
 589                         /* The player cannot see the missile */
 590                         else
 591                         {
 592                                 /* Pause anyway, for consistancy */
 593                                 Term_xtra(TERM_XTRA_DELAY, msec);
 594                         }
 595
 596                         /* Sniper */
 597                         if (snipe_type == SP_KILL_TRAP)
 598                         {
 599                                 project(shooter_ptr, 0, 0, ny, nx, 0, GF_KILL_TRAP,
 600                                         (PROJECT_JUMP | PROJECT_HIDE | PROJECT_GRID | PROJECT_ITEM), -1);
 601                         }
 602
 603                         /* Sniper */
 604                         if (snipe_type == SP_EVILNESS)
 605                         {
 606                                 shooter_ptr->current_floor_ptr->grid_array[ny][nx].info &= ~(CAVE_GLOW | CAVE_MARK);
 607                                 note_spot(shooter_ptr, ny, nx);
 608                                 lite_spot(shooter_ptr, ny, nx);
 609                         }
 610
 611                         prev_y = y;
 612                         prev_x = x;
 613
 614                         /* Save the new location */
 615                         x = nx;
 616                         y = ny;
 617
 618                         /* Monster here, Try to hit it */
 619                         if (shooter_ptr->current_floor_ptr->grid_array[y][x].m_idx)
 620                         {
 621                                 grid_type *c_mon_ptr = &shooter_ptr->current_floor_ptr->grid_array[y][x];
 622
 623                                 monster_type *m_ptr = &shooter_ptr->current_floor_ptr->m_list[c_mon_ptr->m_idx];
 624                                 monster_race *r_ptr = &r_info[m_ptr->r_idx];
 625
 626                                 /* Check the visibility */
 627                                 visible = m_ptr->ml;
 628
 629                                 /* Note the collision */
 630                                 hit_body = TRUE;
 631
 632                                 if (monster_csleep_remaining(m_ptr))
 633                                 {
 634                                         if (!(r_ptr->flags3 & RF3_EVIL) || one_in_(5)) chg_virtue(shooter_ptr, V_COMPASSION, -1);
 635                                         if (!(r_ptr->flags3 & RF3_EVIL) || one_in_(5)) chg_virtue(shooter_ptr, V_HONOUR, -1);
 636                                 }
 637
 638                                 if ((r_ptr->level + 10) > shooter_ptr->lev)
 639                                 {
 640                                         int now_exp = shooter_ptr->weapon_exp[0][j_ptr->sval];
 641                                         if (now_exp < s_info[shooter_ptr->pclass].w_max[0][j_ptr->sval])
 642                                         {
 643                                                 SUB_EXP amount = 0;
 644                                                 if (now_exp < WEAPON_EXP_BEGINNER) amount = 80;
 645                                                 else if (now_exp < WEAPON_EXP_SKILLED) amount = 25;
 646                                                 else if ((now_exp < WEAPON_EXP_EXPERT) && (shooter_ptr->lev > 19)) amount = 10;
 647                                                 else if (shooter_ptr->lev > 34) amount = 2;
 648                                                 shooter_ptr->weapon_exp[0][j_ptr->sval] += amount;
 649                                                 shooter_ptr->update |= (PU_BONUS);
 650                                         }
 651                                 }
 652
 653                                 if (shooter_ptr->riding)
 654                                 {
 655                                         if ((shooter_ptr->skill_exp[GINOU_RIDING] < s_info[shooter_ptr->pclass].s_max[GINOU_RIDING])
 656                                                 && ((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)
 657                                                 && one_in_(2))
 658                                         {
 659                                                 shooter_ptr->skill_exp[GINOU_RIDING] += 1;
 660                                                 shooter_ptr->update |= (PU_BONUS);
 661                                         }
 662                                 }
 663
 664                                 /* Did we hit it (penalize range) */
 665                                 if (test_hit_fire(shooter_ptr, chance - cur_dis, m_ptr, m_ptr->ml, o_name))
 666                                 {
 667                                         bool fear = FALSE;
 668                                         int tdam = tdam_base;
 669
 670                                         /* Get extra damage from concentration */
 671                                         if (shooter_ptr->concent) tdam = boost_concentration_damage(shooter_ptr, tdam);
 672
 673                                         /* Handle unseen monster */
 674                                         if (!visible)
 675                                         {
 676                                                 /* Invisible monster */
 677                                                 msg_format(_("%sが敵を捕捉した。", "The %s finds a mark."), o_name);
 678                                         }
 679
 680                                         /* Handle visible monster */
 681                                         else
 682                                         {
 683                                                 GAME_TEXT m_name[MAX_NLEN];
 684
 685                                                 /* Get "the monster" or "it" */
 686                                                 monster_desc(shooter_ptr, m_name, m_ptr, 0);
 687
 688                                                 msg_format(_("%sが%sに命中した。", "The %s hits %s."), o_name, m_name);
 689
 690                                                 if (m_ptr->ml)
 691                                                 {
 692                                                         if (!shooter_ptr->image) monster_race_track(shooter_ptr, m_ptr->ap_r_idx);
 693                                                         health_track(shooter_ptr, c_mon_ptr->m_idx);
 694                                                 }
 695                                         }
 696
 697                                         if (snipe_type == SP_NEEDLE)
 698                                         {
 699                                                 if ((randint1(randint1(r_ptr->level / (3 + shooter_ptr->concent)) + (8 - shooter_ptr->concent)) == 1)
 700                                                         && !(r_ptr->flags1 & RF1_UNIQUE) && !(r_ptr->flags7 & RF7_UNIQUE2))
 701                                                 {
 702                                                         GAME_TEXT m_name[MAX_NLEN];
 703
 704                                                         /* Get "the monster" or "it" */
 705                                                         monster_desc(shooter_ptr, m_name, m_ptr, 0);
 706
 707                                                         tdam = m_ptr->hp + 1;
 708                                                         msg_format(_("%sの急所に突き刺さった！", "Your shot hit a fatal spot of %s!"), m_name);
 709                                                 }
 710                                                 else tdam = 1;
 711                                         }
 712                                         else
 713                                         {
 714                                                 /* Apply special damage */
 715                                                 tdam = calc_shot_damage_with_slay(shooter_ptr, q_ptr, tdam, m_ptr, snipe_type);
 716                                                 tdam = critical_shot(shooter_ptr, q_ptr->weight, q_ptr->to_h, j_ptr->to_h, tdam);
 717
 718                                                 /* No negative damage */
 719                                                 if (tdam < 0) tdam = 0;
 720
 721                                                 /* Modify the damage */
 722                                                 tdam = mon_damage_mod(shooter_ptr, m_ptr, tdam, FALSE);
 723                                         }
 724
 725                                         msg_format_wizard(CHEAT_MONSTER,
 726                                                 _("%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))"),
 727                                                 tdam, m_ptr->hp - tdam, m_ptr->maxhp, m_ptr->max_maxhp);
 728
 729                                         /* Sniper */
 730                                         if (snipe_type == SP_EXPLODE)
 731                                         {
 732                                                 u16b flg = (PROJECT_STOP | PROJECT_JUMP | PROJECT_KILL | PROJECT_GRID);
 733
 734                                                 sound(SOUND_EXPLODE); /* No explode sound - use breath fire instead */
 735                                                 project(shooter_ptr, 0, ((shooter_ptr->concent + 1) / 2 + 1), ny, nx, tdam, GF_MISSILE, flg, -1);
 736                                                 break;
 737                                         }
 738
 739                                         /* Sniper */
 740                                         if (snipe_type == SP_HOLYNESS)
 741                                         {
 742                                                 shooter_ptr->current_floor_ptr->grid_array[ny][nx].info |= (CAVE_GLOW);
 743                                                 note_spot(shooter_ptr, ny, nx);
 744                                                 lite_spot(shooter_ptr, ny, nx);
 745                                         }
 746
 747                                         /* Hit the monster, check for death */
 748                                         if (mon_take_hit(shooter_ptr, c_mon_ptr->m_idx, tdam, &fear, extract_note_dies(real_r_idx(m_ptr))))
 749                                         {
 750                                                 /* Dead monster */
 751                                         }
 752
 753                                         /* No death */
 754                                         else
 755                                         {
 756                                                 /* STICK TO */
 757                                                 if (object_is_fixed_artifact(q_ptr) &&
 758                                                         (shooter_ptr->pclass != CLASS_SNIPER || shooter_ptr->concent == 0))
 759                                                 {
 760                                                         GAME_TEXT m_name[MAX_NLEN];
 761
 762                                                         monster_desc(shooter_ptr, m_name, m_ptr, 0);
 763
 764                                                         stick_to = TRUE;
 765                                                         msg_format(_("%sは%sに突き刺さった！", "%^s is stuck in %s!"), o_name, m_name);
 766                                                 }
 767
 768                                                 message_pain(shooter_ptr, c_mon_ptr->m_idx, tdam);
 769
 770                                                 /* Anger the monster */
 771                                                 if (tdam > 0) anger_monster(shooter_ptr, m_ptr);
 772
 773                                                 if (fear && m_ptr->ml)
 774                                                 {
 775                                                         GAME_TEXT m_name[MAX_NLEN];
 776                                                         sound(SOUND_FLEE);
 777                                                         monster_desc(shooter_ptr, m_name, m_ptr, 0);
 778                                                         msg_format(_("%^sは恐怖して逃げ出した！", "%^s flees in terror!"), m_name);
 779                                                 }
 780
 781                                                 set_target(m_ptr, shooter_ptr->y, shooter_ptr->x);
 782
 783                                                 /* Sniper */
 784                                                 if (snipe_type == SP_RUSH)
 785                                                 {
 786                                                         int n = randint1(5) + 3;
 787                                                         MONSTER_IDX m_idx = c_mon_ptr->m_idx;
 788
 789                                                         for (; cur_dis <= tdis; )
 790                                                         {
 791                                                                 POSITION ox = nx;
 792                                                                 POSITION oy = ny;
 793
 794                                                                 if (!n) break;
 795
 796                                                                 /* Calculate the new location (see "project()") */
 797                                                                 mmove2(&ny, &nx, shooter_ptr->y, shooter_ptr->x, ty, tx);
 798
 799                                                                 /* Stopped by wilderness boundary */
 800                                                                 if (!in_bounds2(shooter_ptr->current_floor_ptr, ny, nx)) break;
 801
 802                                                                 /* Stopped by walls/doors */
 803                                                                 if (!player_can_enter(shooter_ptr, shooter_ptr->current_floor_ptr->grid_array[ny][nx].feat, 0)) break;
 804
 805                                                                 /* Stopped by monsters */
 806                                                                 if (!is_cave_empty_bold(shooter_ptr, ny, nx)) break;
 807
 808                                                                 shooter_ptr->current_floor_ptr->grid_array[ny][nx].m_idx = m_idx;
 809                                                                 shooter_ptr->current_floor_ptr->grid_array[oy][ox].m_idx = 0;
 810
 811                                                                 m_ptr->fx = nx;
 812                                                                 m_ptr->fy = ny;
 813
 814                                                                 update_monster(shooter_ptr, c_mon_ptr->m_idx, TRUE);
 815
 816                                                                 lite_spot(shooter_ptr, ny, nx);
 817                                                                 lite_spot(shooter_ptr, oy, ox);
 818
 819                                                                 Term_fresh();
 820                                                                 Term_xtra(TERM_XTRA_DELAY, msec);
 821
 822                                                                 x = nx;
 823                                                                 y = ny;
 824                                                                 cur_dis++;
 825                                                                 n--;
 826                                                         }
 827                                                 }
 828                                         }
 829                                 }
 830
 831                                 /* Sniper */
 832                                 if (snipe_type == SP_PIERCE)
 833                                 {
 834                                         if (shooter_ptr->concent < 1) break;
 835                                         shooter_ptr->concent--;
 836                                         continue;
 837                                 }
 838
 839                                 /* Stop looking */
 840                                 break;
 841                         }
 842                 }
 843
 844                 /* Chance of breakage (during attacks) */
 845                 j = (hit_body ? breakage_chance(shooter_ptr, q_ptr, shooter_ptr->pclass == CLASS_ARCHER, snipe_type) : 0);
 846
 847                 if (stick_to)
 848                 {
 849                         MONSTER_IDX m_idx = shooter_ptr->current_floor_ptr->grid_array[y][x].m_idx;
 850                         monster_type *m_ptr = &shooter_ptr->current_floor_ptr->m_list[m_idx];
 851                         OBJECT_IDX o_idx = o_pop(shooter_ptr->current_floor_ptr);
 852
 853                         if (!o_idx)
 854                         {
 855                                 msg_format(_("%sはどこかへ行った。", "The %s went somewhere."), o_name);
 856                                 if (object_is_fixed_artifact(q_ptr))
 857                                 {
 858                                         a_info[j_ptr->name1].cur_num = 0;
 859                                 }
 860                                 return;
 861                         }
 862
 863                         o_ptr = &shooter_ptr->current_floor_ptr->o_list[o_idx];
 864                         object_copy(o_ptr, q_ptr);
 865
 866                         /* Forget mark */
 867                         o_ptr->marked &= OM_TOUCHED;
 868
 869                         /* Forget location */
 870                         o_ptr->iy = o_ptr->ix = 0;
 871
 872                         /* Memorize monster */
 873                         o_ptr->held_m_idx = m_idx;
 874
 875                         /* Build a stack */
 876                         o_ptr->next_o_idx = m_ptr->hold_o_idx;
 877
 878                         /* Carry object */
 879                         m_ptr->hold_o_idx = o_idx;
 880                 }
 881                 else if (cave_have_flag_bold(shooter_ptr->current_floor_ptr, y, x, FF_PROJECT))
 882                 {
 883                         /* Drop (or break) near that location */
 884                         (void)drop_near(shooter_ptr, q_ptr, j, y, x);
 885                 }
 886                 else
 887                 {
 888                         /* Drop (or break) near that location */
 889                         (void)drop_near(shooter_ptr, q_ptr, j, prev_y, prev_x);
 890                 }
 891
 892                 /* Sniper - Repeat shooting when double shots */
 893         }
 894
 895         /* Sniper - Loose his/her concentration after any shot */
 896         if (shooter_ptr->concent) reset_concentration(shooter_ptr, FALSE);
 897 }
 898
 899
 900 /*!
 901 * @brief プレイヤーからモンスターへの射撃命中判定 /
 902 * Determine if the player "hits" a monster (normal combat).
 903 * @param chance 基本命中値
 904 * @param m_ptr モンスターの構造体参照ポインタ
 905 * @param vis 目標を視界に捕らえているならばTRUEを指定
 906 * @param o_name メッセージ表示時のモンスター名
 907 * @return 命中と判定された場合TRUEを返す
 908 * @note Always miss 5%, always hit 5%, otherwise random.
 909 */
 910 bool test_hit_fire(player_type *shooter_ptr, int chance, monster_type *m_ptr, int vis, char* o_name)
 911 {
 912         int k;
 913         ARMOUR_CLASS ac;
 914         monster_race *r_ptr = &r_info[m_ptr->r_idx];
 915
 916         /* Percentile dice */
 917         k = randint1(100);
 918
 919         /* Snipers with high-concentration reduce instant miss percentage.*/
 920         k += shooter_ptr->concent;
 921
 922         /* Hack -- Instant miss or hit */
 923         if (k <= 5) return FALSE;
 924         if (k > 95) return TRUE;
 925
 926         if (shooter_ptr->pseikaku == PERSONALITY_LAZY)
 927                 if (one_in_(20)) return FALSE;
 928
 929         /* Never hit */
 930         if (chance <= 0) return FALSE;
 931
 932         ac = r_ptr->ac;
 933         if (shooter_ptr->concent)
 934         {
 935                 ac *= (8 - shooter_ptr->concent);
 936                 ac /= 8;
 937         }
 938
 939         if (m_ptr->r_idx == MON_GOEMON && !monster_csleep_remaining(m_ptr)) ac *= 3;
 940
 941         /* Invisible monsters are harder to hit */
 942         if (!vis) chance = (chance + 1) / 2;
 943
 944         /* Power competes against armor */
 945         if (randint0(chance) < (ac * 3 / 4))
 946         {
 947                 if (m_ptr->r_idx == MON_GOEMON && !monster_csleep_remaining(m_ptr))
 948                 {
 949                         GAME_TEXT m_name[MAX_NLEN];
 950                         monster_desc(shooter_ptr, m_name, m_ptr, 0);
 951                         msg_format(_("%sは%sを斬り捨てた！", "%s cuts down %s!"), m_name, o_name);
 952                 }
 953                 return FALSE;
 954         }
 955
 956         /* Assume hit */
 957         return TRUE;
 958 }
 959
 960
 961
 962
 963 /*!
 964 * @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 /
 965 * Critical hits (from objects thrown by player) Factor in item weight, total plusses, and player level.
 966 * @param weight 矢弾の重量
 967 * @param plus_ammo 矢弾の命中修正
 968 * @param plus_bow 弓の命中修正
 969 * @param dam 現在算出中のダメージ値
 970 * @return クリティカル修正が入ったダメージ値
 971 */
 972 HIT_POINT critical_shot(player_type *shooter_ptr, WEIGHT weight, int plus_ammo, int plus_bow, HIT_POINT dam)
 973 {
 974         int i, k;
 975         object_type *j_ptr = &shooter_ptr->inventory_list[INVEN_BOW];
 976
 977         /* Extract "shot" power */
 978         i = shooter_ptr->to_h_b + plus_ammo;
 979
 980         if (shooter_ptr->tval_ammo == TV_BOLT)
 981                 i = (shooter_ptr->skill_thb + (shooter_ptr->weapon_exp[0][j_ptr->sval] / 400 + i) * BTH_PLUS_ADJ);
 982         else
 983                 i = (shooter_ptr->skill_thb + ((shooter_ptr->weapon_exp[0][j_ptr->sval] - (WEAPON_EXP_MASTER / 2)) / 200 + i) * BTH_PLUS_ADJ);
 984
 985
 986         /* Snipers can shot more critically with crossbows */
 987         if (shooter_ptr->concent) i += ((i * shooter_ptr->concent) / 5);
 988         if ((shooter_ptr->pclass == CLASS_SNIPER) && (shooter_ptr->tval_ammo == TV_BOLT)) i *= 2;
 989
 990         /* Good bow makes more critical */
 991         i += plus_bow * 8 * (shooter_ptr->concent ? shooter_ptr->concent + 5 : 5);
 992
 993         /* Critical hit */
 994         if (randint1(10000) <= i)
 995         {
 996                 k = weight * randint1(500);
 997
 998                 if (k < 900)
 999                 {
1000                         msg_print(_("手ごたえがあった！", "It was a good hit!"));
1001                         dam += (dam / 2);
1002                 }
1003                 else if (k < 1350)
1004                 {
1005                         msg_print(_("かなりの手ごたえがあった！", "It was a great hit!"));
1006                         dam *= 2;
1007                 }
1008                 else
1009                 {
1010                         msg_print(_("会心の一撃だ！", "It was a superb hit!"));
1011                         dam *= 3;
1012                 }
1013         }
1014
1015         return (dam);
1016 }
1017
1018
1019
1020
1021 /*!
1022  * @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
1023  * @param sval 射撃武器のアイテム副分類ID
1024  * @return 消費する基本エネルギー
1025  */
1026 ENERGY bow_energy(OBJECT_SUBTYPE_VALUE sval)
1027 {
1028         ENERGY energy = 10000;
1029
1030         /* Analyze the launcher */
1031         switch (sval)
1032         {
1033                 /* Sling and ammo */
1034         case SV_SLING:
1035         {
1036                 energy = 8000;
1037                 break;
1038         }
1039
1040         /* Short Bow and Arrow */
1041         case SV_SHORT_BOW:
1042         {
1043                 energy = 10000;
1044                 break;
1045         }
1046
1047         /* Long Bow and Arrow */
1048         case SV_LONG_BOW:
1049         {
1050                 energy = 10000;
1051                 break;
1052         }
1053
1054         /* Bow of irresponsiblity and Arrow */
1055         case SV_NAMAKE_BOW:
1056         {
1057                 energy = 7777;
1058                 break;
1059         }
1060
1061         /* Light Crossbow and Bolt */
1062         case SV_LIGHT_XBOW:
1063         {
1064                 energy = 12000;
1065                 break;
1066         }
1067
1068         /* Heavy Crossbow and Bolt */
1069         case SV_HEAVY_XBOW:
1070         {
1071                 energy = 13333;
1072                 break;
1073         }
1074         }
1075
1076         return (energy);
1077 }
1078
1079
1080 /*
1081  * Return bow tmul
1082  */
1083 int bow_tmul(OBJECT_SUBTYPE_VALUE sval)
1084 {
1085         int tmul = 0;
1086
1087         /* Analyze the launcher */
1088         switch (sval)
1089         {
1090                 /* Sling and ammo */
1091         case SV_SLING:
1092         {
1093                 tmul = 2;
1094                 break;
1095         }
1096
1097         /* Short Bow and Arrow */
1098         case SV_SHORT_BOW:
1099         {
1100                 tmul = 2;
1101                 break;
1102         }
1103
1104         /* Long Bow and Arrow */
1105         case SV_LONG_BOW:
1106         {
1107                 tmul = 3;
1108                 break;
1109         }
1110
1111         /* Bow of irresponsiblity and Arrow */
1112         case SV_NAMAKE_BOW:
1113         {
1114                 tmul = 3;
1115                 break;
1116         }
1117
1118         /* Light Crossbow and Bolt */
1119         case SV_LIGHT_XBOW:
1120         {
1121                 tmul = 3;
1122                 break;
1123         }
1124
1125         /* Heavy Crossbow and Bolt */
1126         case SV_HEAVY_XBOW:
1127         {
1128                 tmul = 4;
1129                 break;
1130         }
1131         }
1132
1133         return (tmul);
1134 }
1135
1136
1137 /*!
1138  * @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
1139  * @param shooter_ptr 射撃を行うクリーチャー参照ポインタ
1140  * @param plus_ammo 矢弾のダメージ修正
1141  * @param plus_bow 弓のダメージ修正
1142  * @return ダメージ期待値
1143  * @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。
1144  */
1145 HIT_POINT calc_crit_ratio_shot(player_type* shooter_ptr, HIT_POINT plus_ammo, HIT_POINT plus_bow)
1146 {
1147         HIT_POINT i;
1148         object_type *j_ptr = &shooter_ptr->inventory_list[INVEN_BOW];
1149
1150         /* Extract "shot" power */
1151         i = shooter_ptr->to_h_b + plus_ammo;
1152
1153         if (shooter_ptr->tval_ammo == TV_BOLT)
1154                 i = (shooter_ptr->skill_thb + (shooter_ptr->weapon_exp[0][j_ptr->sval] / 400 + i) * BTH_PLUS_ADJ);
1155         else
1156                 i = (shooter_ptr->skill_thb + ((shooter_ptr->weapon_exp[0][j_ptr->sval] - (WEAPON_EXP_MASTER / 2)) / 200 + i) * BTH_PLUS_ADJ);
1157
1158         /* Snipers can shot more critically with crossbows */
1159         if (shooter_ptr->concent) i += ((i * shooter_ptr->concent) / 5);
1160         if ((shooter_ptr->pclass == CLASS_SNIPER) && (shooter_ptr->tval_ammo == TV_BOLT)) i *= 2;
1161
1162         /* Good bow makes more critical */
1163         i += plus_bow * 8 * (shooter_ptr->concent ? shooter_ptr->concent + 5 : 5);
1164
1165         if (i < 0) i = 0;
1166
1167         return i;
1168 }
1169
1170 /*!
1171  * @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
1172  * @param weight 武器の重量
1173  * @param plus_ammo 矢弾のダメージ修正
1174  * @param plus_bow 弓のダメージ修正
1175  * @param dam 基本ダメージ量
1176  * @return ダメージ期待値
1177  */
1178 HIT_POINT calc_expect_crit_shot(player_type *shooter_ptr, WEIGHT weight, int plus_ammo, int plus_bow, HIT_POINT dam)
1179 {
1180         u32b num;
1181         int i, k, crit;
1182         i = calc_crit_ratio_shot(shooter_ptr, plus_ammo, plus_bow);
1183
1184         k = 0;
1185         num = 0;
1186
1187         crit = MIN(500, 900 / weight);
1188         num += dam * 3 / 2 * crit;
1189         k = crit;
1190
1191         crit = MIN(500, 1350 / weight);
1192         crit -= k;
1193         num += dam * 2 * crit;
1194         k += crit;
1195
1196         if (k < 500)
1197         {
1198                 crit = 500 - k;
1199                 num += dam * 3 * crit;
1200         }
1201
1202         num /= 500;
1203
1204         num *= i;
1205         num += (10000 - i) * dam;
1206         num /= 10000;
1207
1208         return num;
1209 }
1210
1211 /*!
1212  * @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
1213  * @param shooter_ptr プレーヤーへの参照ポインタ
1214  * @param weight 武器の重量
1215  * @param plus 武器のダメージ修正
1216  * @param dam 基本ダメージ
1217  * @param meichuu 命中値
1218  * @param dokubari 毒針処理か否か
1219  * @return ダメージ期待値
1220  */
1221 HIT_POINT calc_expect_crit(player_type *shooter_ptr, WEIGHT weight, int plus, HIT_POINT dam, s16b meichuu, bool dokubari)
1222 {
1223         u32b k, num;
1224         if (dokubari) return dam;
1225
1226         int i = (weight + (meichuu * 3 + plus * 5) + shooter_ptr->skill_thn);
1227         if (i < 0) i = 0;
1228
1229         k = weight;
1230         num = 0;
1231
1232         if (k < 400)                                            num += (2 * dam + 5) * (400 - k);
1233         if (k < 700)                                            num += (2 * dam + 10) * (MIN(700, k + 650) - MAX(400, k));
1234         if (k > (700 - 650) && k < 900)         num += (3 * dam + 15) * (MIN(900, k + 650) - MAX(700, k));
1235         if (k > (900 - 650) && k < 1300)                num += (3 * dam + 20) * (MIN(1300, k + 650) - MAX(900, k));
1236         if (k > (1300 - 650))                                   num += (7 * dam / 2 + 25) * MIN(650, k - (1300 - 650));
1237
1238         num /= 650;
1239         if (shooter_ptr->pclass == CLASS_NINJA)
1240         {
1241                 num *= i;
1242                 num += (4444 - i) * dam;
1243                 num /= 4444;
1244         }
1245         else
1246         {
1247                 num *= i;
1248                 num += (5000 - i) * dam;
1249                 num /= 5000;
1250         }
1251
1252         return num;
1253 }
1254