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