src/combat/shoot.c

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