src/combat/shoot.c

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