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