src/combat/shoot.c

   1 #include "combat/shoot.h"
   2 #include "combat/snipe.h"
   3 #include "core/stuff-handler.h"
   4 #include "effect/effect-characteristics.h"
   5 #include "effect/spells-effect-util.h"
   6 #include "grid/grid.h"
   7 #include "inventory/inventory-object.h"
   8 #include "io/targeting.h"
   9 #include "main/sound-definitions-table.h"
  10 #include "monster/monster-status.h"
  11 #include "monster/monster.h"
  12 #include "mspell/monster-spell.h"
  13 #include "object/artifact.h"
  14 #include "object/object-broken.h"
  15 #include "object/object-flavor.h"
  16 #include "object/object-hook.h"
  17 #include "object/object-kind.h"
  18 #include "object/object-mark-types.h"
  19 #include "object/object2.h"
  20 #include "object/sv-bow-types.h"
  21 #include "object/tr-types.h"
  22 #include "player/avatar.h"
  23 #include "player/player-class.h"
  24 #include "player/player-personalities-table.h"
  25 #include "player/player-skill.h"
  26 #include "player/player-status.h"
  27 #include "spell/process-effect.h"
  28 #include "term/gameterm.h"
  29 #include "util/util.h"
  30 #include "view/display-main-window.h"
  31
  32 /*!
  33  * @brief 矢弾を射撃した際のスレイ倍率をかけた結果を返す /
  34  * Determines the odds of an object breaking when thrown at a monster
  35  * @param o_ptr 矢弾のオブジェクト構造体参照ポインタ
  36  * @param tdam 計算途中のダメージ量
  37  * @param m_ptr 目標モンスターの構造体参照ポインタ
  38  * @return スレイ倍率をかけたダメージ量
  39  */
  40 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)
  41 {
  42         MULTIPLY mult = 10;
  43
  44         monster_race *r_ptr = &r_info[m_ptr->r_idx];
  45
  46         BIT_FLAGS flgs[TR_FLAG_SIZE];
  47         object_flags(o_ptr, flgs);
  48
  49         /* Some "weapons" and "ammo" do extra damage */
  50         switch (o_ptr->tval)
  51         {
  52         case TV_SHOT:
  53         case TV_ARROW:
  54         case TV_BOLT:
  55         {
  56                 if ((have_flag(flgs, TR_SLAY_ANIMAL)) && (r_ptr->flags3 & RF3_ANIMAL))
  57                 {
  58                         if (is_original_ap_and_seen(sniper_ptr, m_ptr))
  59                         {
  60                                 r_ptr->r_flags3 |= RF3_ANIMAL;
  61                         }
  62                         if (mult < 17) mult = 17;
  63                 }
  64
  65                 if ((have_flag(flgs, TR_KILL_ANIMAL)) && (r_ptr->flags3 & RF3_ANIMAL))
  66                 {
  67                         if (is_original_ap_and_seen(sniper_ptr, m_ptr))
  68                         {
  69                                 r_ptr->r_flags3 |= RF3_ANIMAL;
  70                         }
  71                         if (mult < 27) mult = 27;
  72                 }
  73
  74                 if ((have_flag(flgs, TR_SLAY_EVIL)) && (r_ptr->flags3 & RF3_EVIL))
  75                 {
  76                         if (is_original_ap_and_seen(sniper_ptr, m_ptr))
  77                         {
  78                                 r_ptr->r_flags3 |= RF3_EVIL;
  79                         }
  80                         if (mult < 15) mult = 15;
  81                 }
  82
  83                 if ((have_flag(flgs, TR_KILL_EVIL)) && (r_ptr->flags3 & RF3_EVIL))
  84                 {
  85                         if (is_original_ap_and_seen(sniper_ptr, m_ptr))
  86                         {
  87                                 r_ptr->r_flags3 |= RF3_EVIL;
  88                         }
  89                         if (mult < 25) mult = 25;
  90                 }
  91
  92                 if ((have_flag(flgs, TR_SLAY_HUMAN)) && (r_ptr->flags2 & RF2_HUMAN))
  93                 {
  94                         if (is_original_ap_and_seen(sniper_ptr, m_ptr))
  95                         {
  96                                 r_ptr->r_flags2 |= RF2_HUMAN;
  97                         }
  98                         if (mult < 17) mult = 17;
  99                 }
 100
 101                 if ((have_flag(flgs, TR_KILL_HUMAN)) && (r_ptr->flags2 & RF2_HUMAN))
 102                 {
 103                         if (is_original_ap_and_seen(sniper_ptr, m_ptr))
 104                         {
 105                                 r_ptr->r_flags2 |= RF2_HUMAN;
 106                         }
 107                         if (mult < 27) mult = 27;
 108                 }
 109
 110                 if ((have_flag(flgs, TR_SLAY_UNDEAD)) && (r_ptr->flags3 & RF3_UNDEAD))
 111                 {
 112                         if (is_original_ap_and_seen(sniper_ptr, m_ptr))
 113                         {
 114                                 r_ptr->r_flags3 |= RF3_UNDEAD;
 115                         }
 116                         if (mult < 20) mult = 20;
 117                 }
 118
 119                 if ((have_flag(flgs, TR_KILL_UNDEAD)) && (r_ptr->flags3 & RF3_UNDEAD))
 120                 {
 121                         if (is_original_ap_and_seen(sniper_ptr, m_ptr))
 122                         {
 123                                 r_ptr->r_flags3 |= RF3_UNDEAD;
 124                         }
 125                         if (mult < 30) mult = 30;
 126                 }
 127
 128                 if ((have_flag(flgs, TR_SLAY_DEMON)) && (r_ptr->flags3 & RF3_DEMON))
 129                 {
 130                         if (is_original_ap_and_seen(sniper_ptr, m_ptr))
 131                         {
 132                                 r_ptr->r_flags3 |= RF3_DEMON;
 133                         }
 134                         if (mult < 20) mult = 20;
 135                 }
 136
 137                 if ((have_flag(flgs, TR_KILL_DEMON)) && (r_ptr->flags3 & RF3_DEMON))
 138                 {
 139                         if (is_original_ap_and_seen(sniper_ptr, m_ptr))
 140                         {
 141                                 r_ptr->r_flags3 |= RF3_DEMON;
 142                         }
 143                         if (mult < 30) mult = 30;
 144                 }
 145
 146                 if ((have_flag(flgs, TR_SLAY_ORC)) && (r_ptr->flags3 & RF3_ORC))
 147                 {
 148                         if (is_original_ap_and_seen(sniper_ptr, m_ptr))
 149                         {
 150                                 r_ptr->r_flags3 |= RF3_ORC;
 151                         }
 152                         if (mult < 20) mult = 20;
 153                 }
 154
 155                 if ((have_flag(flgs, TR_KILL_ORC)) && (r_ptr->flags3 & RF3_ORC))
 156                 {
 157                         if (is_original_ap_and_seen(sniper_ptr, m_ptr))
 158                         {
 159                                 r_ptr->r_flags3 |= RF3_ORC;
 160                         }
 161                         if (mult < 30) mult = 30;
 162                 }
 163
 164                 if ((have_flag(flgs, TR_SLAY_TROLL)) && (r_ptr->flags3 & RF3_TROLL))
 165                 {
 166                         if (is_original_ap_and_seen(sniper_ptr, m_ptr))
 167                         {
 168                                 r_ptr->r_flags3 |= RF3_TROLL;
 169                         }
 170
 171                         if (mult < 20) mult = 20;
 172                 }
 173
 174                 if ((have_flag(flgs, TR_KILL_TROLL)) && (r_ptr->flags3 & RF3_TROLL))
 175                 {
 176                         if (is_original_ap_and_seen(sniper_ptr, m_ptr))
 177                         {
 178                                 r_ptr->r_flags3 |= RF3_TROLL;
 179                         }
 180                         if (mult < 30) mult = 30;
 181                 }
 182
 183                 if ((have_flag(flgs, TR_SLAY_GIANT)) && (r_ptr->flags3 & RF3_GIANT))
 184                 {
 185                         if (is_original_ap_and_seen(sniper_ptr, m_ptr))
 186                         {
 187                                 r_ptr->r_flags3 |= RF3_GIANT;
 188                         }
 189                         if (mult < 20) mult = 20;
 190                 }
 191
 192                 if ((have_flag(flgs, TR_KILL_GIANT)) && (r_ptr->flags3 & RF3_GIANT))
 193                 {
 194                         if (is_original_ap_and_seen(sniper_ptr, m_ptr))
 195                         {
 196                                 r_ptr->r_flags3 |= RF3_GIANT;
 197                         }
 198                         if (mult < 30) mult = 30;
 199                 }
 200
 201                 if ((have_flag(flgs, TR_SLAY_DRAGON)) && (r_ptr->flags3 & RF3_DRAGON))
 202                 {
 203                         if (is_original_ap_and_seen(sniper_ptr, m_ptr))
 204                         {
 205                                 r_ptr->r_flags3 |= RF3_DRAGON;
 206                         }
 207                         if (mult < 20) mult = 20;
 208                 }
 209
 210                 if ((have_flag(flgs, TR_KILL_DRAGON)) && (r_ptr->flags3 & RF3_DRAGON))
 211                 {
 212                         if (is_original_ap_and_seen(sniper_ptr, m_ptr))
 213                         {
 214                                 r_ptr->r_flags3 |= RF3_DRAGON;
 215                         }
 216                         if (mult < 30) mult = 30;
 217                         if ((o_ptr->name1 == ART_BARD_ARROW) && (m_ptr->r_idx == MON_SMAUG) &&
 218                                 (sniper_ptr->inventory_list[INVEN_BOW].name1 == ART_BARD))
 219                                 mult *= 5;
 220                 }
 221
 222                 if (have_flag(flgs, TR_BRAND_ACID))
 223                 {
 224                         /* Notice immunity */
 225                         if (r_ptr->flagsr & RFR_EFF_IM_ACID_MASK)
 226                         {
 227                                 if (is_original_ap_and_seen(sniper_ptr, m_ptr))
 228                                 {
 229                                         r_ptr->r_flagsr |= (r_ptr->flagsr & RFR_EFF_IM_ACID_MASK);
 230                                 }
 231                         }
 232                         else
 233                         {
 234                                 if (mult < 17) mult = 17;
 235                         }
 236                 }
 237
 238                 if (have_flag(flgs, TR_BRAND_ELEC))
 239                 {
 240                         /* Notice immunity */
 241                         if (r_ptr->flagsr & RFR_EFF_IM_ELEC_MASK)
 242                         {
 243                                 if (is_original_ap_and_seen(sniper_ptr, m_ptr))
 244                                 {
 245                                         r_ptr->r_flagsr |= (r_ptr->flagsr & RFR_EFF_IM_ELEC_MASK);
 246                                 }
 247                         }
 248                         else
 249                         {
 250                                 if (mult < 17) mult = 17;
 251                         }
 252                 }
 253
 254                 if (have_flag(flgs, TR_BRAND_FIRE))
 255                 {
 256                         /* Notice immunity */
 257                         if (r_ptr->flagsr & RFR_EFF_IM_FIRE_MASK)
 258                         {
 259                                 if (is_original_ap_and_seen(sniper_ptr, m_ptr))
 260                                 {
 261                                         r_ptr->r_flagsr |= (r_ptr->flagsr & RFR_EFF_IM_FIRE_MASK);
 262                                 }
 263                         }
 264                         /* Otherwise, take the damage */
 265                         else
 266                         {
 267                                 if (r_ptr->flags3 & RF3_HURT_FIRE)
 268                                 {
 269                                         if (mult < 25) mult = 25;
 270                                         if (is_original_ap_and_seen(sniper_ptr, m_ptr))
 271                                         {
 272                                                 r_ptr->r_flags3 |= RF3_HURT_FIRE;
 273                                         }
 274                                 }
 275                                 else if (mult < 17) mult = 17;
 276                         }
 277                 }
 278
 279                 if (have_flag(flgs, TR_BRAND_COLD))
 280                 {
 281                         /* Notice immunity */
 282                         if (r_ptr->flagsr & RFR_EFF_IM_COLD_MASK)
 283                         {
 284                                 if (is_original_ap_and_seen(sniper_ptr, m_ptr))
 285                                 {
 286                                         r_ptr->r_flagsr |= (r_ptr->flagsr & RFR_EFF_IM_COLD_MASK);
 287                                 }
 288                         }
 289                         /* Otherwise, take the damage */
 290                         else
 291                         {
 292                                 if (r_ptr->flags3 & RF3_HURT_COLD)
 293                                 {
 294                                         if (mult < 25) mult = 25;
 295                                         if (is_original_ap_and_seen(sniper_ptr, m_ptr))
 296                                         {
 297                                                 r_ptr->r_flags3 |= RF3_HURT_COLD;
 298                                         }
 299                                 }
 300                                 else if (mult < 17) mult = 17;
 301                         }
 302                 }
 303
 304                 if (have_flag(flgs, TR_BRAND_POIS))
 305                 {
 306                         /* Notice immunity */
 307                         if (r_ptr->flagsr & RFR_EFF_IM_POIS_MASK)
 308                         {
 309                                 if (is_original_ap_and_seen(sniper_ptr, m_ptr))
 310                                 {
 311                                         r_ptr->r_flagsr |= (r_ptr->flagsr & RFR_EFF_IM_POIS_MASK);
 312                                 }
 313                         }
 314                         /* Otherwise, take the damage */
 315                         else
 316                         {
 317                                 if (mult < 17) mult = 17;
 318                         }
 319                 }
 320
 321                 if ((have_flag(flgs, TR_FORCE_WEAPON)) && (sniper_ptr->csp > (sniper_ptr->msp / 30)))
 322                 {
 323                         sniper_ptr->csp -= (1 + (sniper_ptr->msp / 30));
 324                         sniper_ptr->redraw |= (PR_MANA);
 325                         mult = mult * 5 / 2;
 326                 }
 327                 break;
 328         }
 329         }
 330
 331         /* Sniper */
 332         if (snipe_type) mult = calc_snipe_damage_with_slay(sniper_ptr, mult, m_ptr, snipe_type);
 333
 334         /* Return the total damage */
 335         return (tdam * mult / 10);
 336 }
 337
 338
 339 /*!
 340  * @brief 射撃処理実行 /
 341  * Fire an object from the pack or floor.
 342  * @param item 射撃するオブジェクトの所持ID
 343  * @param j_ptr 射撃武器のオブジェクト参照ポインタ
 344  * @return なし
 345  * @details
 346  * <pre>
 347  * You may only fire items that "match" your missile launcher.
 348  * You must use slings + pebbles/shots, bows + arrows, xbows + bolts.
 349  * See "calc_bonuses()" for more calculations and such.
 350  * Note that "firing" a missile is MUCH better than "throwing" it.
 351  * Note: "unseen" monsters are very hard to hit.
 352  * Objects are more likely to break if they "attempt" to hit a monster.
 353  * Rangers (with Bows) and Anyone (with "Extra Shots") get extra shots.
 354  * The "extra shot" code works by decreasing the amount of energy
 355  * required to make each shot, spreading the shots out over time.
 356  * Note that when firing missiles, the launcher multiplier is applied
 357  * after all the bonuses are added in, making multipliers very useful.
 358  * Note that Bows of "Extra Might" get extra range and an extra bonus
 359  * for the damage multiplier.
 360  * Note that Bows of "Extra Shots" give an extra shot.
 361  * </pre>
 362  */
 363 void exe_fire(player_type *shooter_ptr, INVENTORY_IDX item, object_type *j_ptr, SPELL_IDX snipe_type)
 364 {
 365         DIRECTION dir;
 366         int i;
 367         POSITION y, x, ny, nx, ty, tx, prev_y, prev_x;
 368         int tdam_base, tdis, thits, tmul;
 369         int bonus, chance;
 370         int cur_dis, visible;
 371         PERCENTAGE j;
 372
 373         object_type forge;
 374         object_type *q_ptr;
 375
 376         object_type *o_ptr;
 377
 378         bool hit_body = FALSE;
 379
 380         GAME_TEXT o_name[MAX_NLEN];
 381
 382         u16b path_g[512];       /* For calcuration of path length */
 383
 384         int msec = delay_factor * delay_factor * delay_factor;
 385
 386         /* STICK TO */
 387         bool stick_to = FALSE;
 388
 389         /* Access the item (if in the pack) */
 390         if (item >= 0)
 391         {
 392                 o_ptr = &shooter_ptr->inventory_list[item];
 393         }
 394         else
 395         {
 396                 o_ptr = &shooter_ptr->current_floor_ptr->o_list[0 - item];
 397         }
 398
 399         /* Sniper - Cannot shot a single arrow twice */
 400         if ((snipe_type == SP_DOUBLE) && (o_ptr->number < 2)) snipe_type = SP_NONE;
 401
 402         object_desc(shooter_ptr, o_name, o_ptr, OD_OMIT_PREFIX);
 403
 404         /* Use the proper number of shots */
 405         thits = shooter_ptr->num_fire;
 406
 407         /* Use a base distance */
 408         tdis = 10;
 409
 410         /* Base damage from thrown object plus launcher bonus */
 411         tdam_base = damroll(o_ptr->dd, o_ptr->ds) + o_ptr->to_d + j_ptr->to_d;
 412
 413         /* Actually "fire" the object */
 414         bonus = (shooter_ptr->to_h_b + o_ptr->to_h + j_ptr->to_h);
 415         if ((j_ptr->sval == SV_LIGHT_XBOW) || (j_ptr->sval == SV_HEAVY_XBOW))
 416                 chance = (shooter_ptr->skill_thb + (shooter_ptr->weapon_exp[0][j_ptr->sval] / 400 + bonus) * BTH_PLUS_ADJ);
 417         else
 418                 chance = (shooter_ptr->skill_thb + ((shooter_ptr->weapon_exp[0][j_ptr->sval] - (WEAPON_EXP_MASTER / 2)) / 200 + bonus) * BTH_PLUS_ADJ);
 419
 420         shooter_ptr->energy_use = bow_energy(j_ptr->sval);
 421         tmul = bow_tmul(j_ptr->sval);
 422
 423         /* Get extra "power" from "extra might" */
 424         if (shooter_ptr->xtra_might) tmul++;
 425
 426         tmul = tmul * (100 + (int)(adj_str_td[shooter_ptr->stat_ind[A_STR]]) - 128);
 427
 428         /* Boost the damage */
 429         tdam_base *= tmul;
 430         tdam_base /= 100;
 431
 432         /* Base range */
 433         tdis = 13 + tmul / 80;
 434         if ((j_ptr->sval == SV_LIGHT_XBOW) || (j_ptr->sval == SV_HEAVY_XBOW))
 435         {
 436                 if (shooter_ptr->concent)
 437                         tdis -= (5 - (shooter_ptr->concent + 1) / 2);
 438                 else
 439                         tdis -= 5;
 440         }
 441
 442         project_length = tdis + 1;
 443
 444         /* Get a direction (or cancel) */
 445         if (!get_aim_dir(shooter_ptr, &dir))
 446         {
 447                 free_turn(shooter_ptr);
 448
 449                 if (snipe_type == SP_AWAY) snipe_type = SP_NONE;
 450
 451                 /* need not to reset project_length (already did)*/
 452
 453                 return;
 454         }
 455
 456         /* Predict the "target" location */
 457         tx = shooter_ptr->x + 99 * ddx[dir];
 458         ty = shooter_ptr->y + 99 * ddy[dir];
 459
 460         /* Check for "target request" */
 461         if ((dir == 5) && target_okay(shooter_ptr))
 462         {
 463                 tx = target_col;
 464                 ty = target_row;
 465         }
 466
 467         /* Get projection path length */
 468         tdis = project_path(shooter_ptr, path_g, project_length, shooter_ptr->y, shooter_ptr->x, ty, tx, PROJECT_PATH | PROJECT_THRU) - 1;
 469
 470         project_length = 0; /* reset to default */
 471
 472         /* Don't shoot at my feet */
 473         if (tx == shooter_ptr->x && ty == shooter_ptr->y)
 474         {
 475                 free_turn(shooter_ptr);
 476
 477                 /* project_length is already reset to 0 */
 478
 479                 return;
 480         }
 481
 482
 483         /* Take a (partial) turn */
 484         shooter_ptr->energy_use = (shooter_ptr->energy_use / thits);
 485         shooter_ptr->is_fired = TRUE;
 486
 487         /* Sniper - Difficult to shot twice at 1 turn */
 488         if (snipe_type == SP_DOUBLE)  shooter_ptr->concent = (shooter_ptr->concent + 1) / 2;
 489
 490         /* Sniper - Repeat shooting when double shots */
 491         for (i = 0; i < ((snipe_type == SP_DOUBLE) ? 2 : 1); i++)
 492         {
 493
 494                 /* Start at the player */
 495                 y = shooter_ptr->y;
 496                 x = shooter_ptr->x;
 497                 q_ptr = &forge;
 498                 object_copy(q_ptr, o_ptr);
 499
 500                 /* Single object */
 501                 q_ptr->number = 1;
 502
 503                 vary_item(shooter_ptr, item, -1);
 504
 505                 sound(SOUND_SHOOT);
 506                 handle_stuff(shooter_ptr);
 507
 508                 prev_y = y;
 509                 prev_x = x;
 510
 511                 /* The shot does not hit yet */
 512                 hit_body = FALSE;
 513
 514                 /* Travel until stopped */
 515                 for (cur_dis = 0; cur_dis <= tdis; )
 516                 {
 517                         grid_type *g_ptr;
 518
 519                         /* Hack -- Stop at the target */
 520                         if ((y == ty) && (x == tx)) break;
 521
 522                         /* Calculate the new location (see "project()") */
 523                         ny = y;
 524                         nx = x;
 525                         mmove2(&ny, &nx, shooter_ptr->y, shooter_ptr->x, ty, tx);
 526
 527                         /* Shatter Arrow */
 528                         if (snipe_type == SP_KILL_WALL)
 529                         {
 530                                 g_ptr = &shooter_ptr->current_floor_ptr->grid_array[ny][nx];
 531
 532                                 if (cave_have_flag_grid(g_ptr, FF_HURT_ROCK) && !g_ptr->m_idx)
 533                                 {
 534                                         if (g_ptr->info & (CAVE_MARK)) msg_print(_("岩が砕け散った。", "Wall rocks were shattered."));
 535                                         /* Forget the wall */
 536                                         g_ptr->info &= ~(CAVE_MARK);
 537                                         shooter_ptr->update |= (PU_VIEW | PU_LITE | PU_FLOW | PU_MON_LITE);
 538
 539                                         /* Destroy the wall */
 540                                         cave_alter_feat(shooter_ptr, ny, nx, FF_HURT_ROCK);
 541
 542                                         hit_body = TRUE;
 543                                         break;
 544                                 }
 545                         }
 546
 547                         /* Stopped by walls/doors */
 548                         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;
 549
 550                         /* Advance the distance */
 551                         cur_dis++;
 552
 553                         /* Sniper */
 554                         if (snipe_type == SP_LITE)
 555                         {
 556                                 shooter_ptr->current_floor_ptr->grid_array[ny][nx].info |= (CAVE_GLOW);
 557                                 note_spot(shooter_ptr, ny, nx);
 558                                 lite_spot(shooter_ptr, ny, nx);
 559                         }
 560
 561                         /* The player can see the (on screen) missile */
 562                         if (panel_contains(ny, nx) && player_can_see_bold(shooter_ptr, ny, nx))
 563                         {
 564                                 char c = object_char(q_ptr);
 565                                 byte a = object_attr(q_ptr);
 566
 567                                 /* Draw, Hilite, Fresh, Pause, Erase */
 568                                 print_rel(shooter_ptr, c, a, ny, nx);
 569                                 move_cursor_relative(ny, nx);
 570                                 Term_fresh();
 571                                 Term_xtra(TERM_XTRA_DELAY, msec);
 572                                 lite_spot(shooter_ptr, ny, nx);
 573                                 Term_fresh();
 574                         }
 575
 576                         /* The player cannot see the missile */
 577                         else
 578                         {
 579                                 /* Pause anyway, for consistancy */
 580                                 Term_xtra(TERM_XTRA_DELAY, msec);
 581                         }
 582
 583                         /* Sniper */
 584                         if (snipe_type == SP_KILL_TRAP)
 585                         {
 586                                 project(shooter_ptr, 0, 0, ny, nx, 0, GF_KILL_TRAP,
 587                                         (PROJECT_JUMP | PROJECT_HIDE | PROJECT_GRID | PROJECT_ITEM), -1);
 588                         }
 589
 590                         /* Sniper */
 591                         if (snipe_type == SP_EVILNESS)
 592                         {
 593                                 shooter_ptr->current_floor_ptr->grid_array[ny][nx].info &= ~(CAVE_GLOW | CAVE_MARK);
 594                                 note_spot(shooter_ptr, ny, nx);
 595                                 lite_spot(shooter_ptr, ny, nx);
 596                         }
 597
 598                         prev_y = y;
 599                         prev_x = x;
 600
 601                         /* Save the new location */
 602                         x = nx;
 603                         y = ny;
 604
 605                         /* Monster here, Try to hit it */
 606                         if (shooter_ptr->current_floor_ptr->grid_array[y][x].m_idx)
 607                         {
 608                                 grid_type *c_mon_ptr = &shooter_ptr->current_floor_ptr->grid_array[y][x];
 609
 610                                 monster_type *m_ptr = &shooter_ptr->current_floor_ptr->m_list[c_mon_ptr->m_idx];
 611                                 monster_race *r_ptr = &r_info[m_ptr->r_idx];
 612
 613                                 /* Check the visibility */
 614                                 visible = m_ptr->ml;
 615
 616                                 /* Note the collision */
 617                                 hit_body = TRUE;
 618
 619                                 if (MON_CSLEEP(m_ptr))
 620                                 {
 621                                         if (!(r_ptr->flags3 & RF3_EVIL) || one_in_(5)) chg_virtue(shooter_ptr, V_COMPASSION, -1);
 622                                         if (!(r_ptr->flags3 & RF3_EVIL) || one_in_(5)) chg_virtue(shooter_ptr, V_HONOUR, -1);
 623                                 }
 624
 625                                 if ((r_ptr->level + 10) > shooter_ptr->lev)
 626                                 {
 627                                         int now_exp = shooter_ptr->weapon_exp[0][j_ptr->sval];
 628                                         if (now_exp < s_info[shooter_ptr->pclass].w_max[0][j_ptr->sval])
 629                                         {
 630                                                 SUB_EXP amount = 0;
 631                                                 if (now_exp < WEAPON_EXP_BEGINNER) amount = 80;
 632                                                 else if (now_exp < WEAPON_EXP_SKILLED) amount = 25;
 633                                                 else if ((now_exp < WEAPON_EXP_EXPERT) && (shooter_ptr->lev > 19)) amount = 10;
 634                                                 else if (shooter_ptr->lev > 34) amount = 2;
 635                                                 shooter_ptr->weapon_exp[0][j_ptr->sval] += amount;
 636                                                 shooter_ptr->update |= (PU_BONUS);
 637                                         }
 638                                 }
 639
 640                                 if (shooter_ptr->riding)
 641                                 {
 642                                         if ((shooter_ptr->skill_exp[GINOU_RIDING] < s_info[shooter_ptr->pclass].s_max[GINOU_RIDING])
 643                                                 && ((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)
 644                                                 && one_in_(2))
 645                                         {
 646                                                 shooter_ptr->skill_exp[GINOU_RIDING] += 1;
 647                                                 shooter_ptr->update |= (PU_BONUS);
 648                                         }
 649                                 }
 650
 651                                 /* Did we hit it (penalize range) */
 652                                 if (test_hit_fire(shooter_ptr, chance - cur_dis, m_ptr, m_ptr->ml, o_name))
 653                                 {
 654                                         bool fear = FALSE;
 655                                         int tdam = tdam_base;
 656
 657                                         /* Get extra damage from concentration */
 658                                         if (shooter_ptr->concent) tdam = boost_concentration_damage(shooter_ptr, tdam);
 659
 660                                         /* Handle unseen monster */
 661                                         if (!visible)
 662                                         {
 663                                                 /* Invisible monster */
 664                                                 msg_format(_("%sが敵を捕捉した。", "The %s finds a mark."), o_name);
 665                                         }
 666
 667                                         /* Handle visible monster */
 668                                         else
 669                                         {
 670                                                 GAME_TEXT m_name[MAX_NLEN];
 671
 672                                                 /* Get "the monster" or "it" */
 673                                                 monster_desc(shooter_ptr, m_name, m_ptr, 0);
 674
 675                                                 msg_format(_("%sが%sに命中した。", "The %s hits %s."), o_name, m_name);
 676
 677                                                 if (m_ptr->ml)
 678                                                 {
 679                                                         if (!shooter_ptr->image) monster_race_track(shooter_ptr, m_ptr->ap_r_idx);
 680                                                         health_track(shooter_ptr, c_mon_ptr->m_idx);
 681                                                 }
 682                                         }
 683
 684                                         if (snipe_type == SP_NEEDLE)
 685                                         {
 686                                                 if ((randint1(randint1(r_ptr->level / (3 + shooter_ptr->concent)) + (8 - shooter_ptr->concent)) == 1)
 687                                                         && !(r_ptr->flags1 & RF1_UNIQUE) && !(r_ptr->flags7 & RF7_UNIQUE2))
 688                                                 {
 689                                                         GAME_TEXT m_name[MAX_NLEN];
 690
 691                                                         /* Get "the monster" or "it" */
 692                                                         monster_desc(shooter_ptr, m_name, m_ptr, 0);
 693
 694                                                         tdam = m_ptr->hp + 1;
 695                                                         msg_format(_("%sの急所に突き刺さった！", "Your shot hit a fatal spot of %s!"), m_name);
 696                                                 }
 697                                                 else tdam = 1;
 698                                         }
 699                                         else
 700                                         {
 701                                                 /* Apply special damage */
 702                                                 tdam = calc_shot_damage_with_slay(shooter_ptr, q_ptr, tdam, m_ptr, snipe_type);
 703                                                 tdam = critical_shot(shooter_ptr, q_ptr->weight, q_ptr->to_h, j_ptr->to_h, tdam);
 704
 705                                                 /* No negative damage */
 706                                                 if (tdam < 0) tdam = 0;
 707
 708                                                 /* Modify the damage */
 709                                                 tdam = mon_damage_mod(shooter_ptr, m_ptr, tdam, FALSE);
 710                                         }
 711
 712                                         msg_format_wizard(CHEAT_MONSTER,
 713                                                 _("%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))"),
 714                                                 tdam, m_ptr->hp - tdam, m_ptr->maxhp, m_ptr->max_maxhp);
 715
 716                                         /* Sniper */
 717                                         if (snipe_type == SP_EXPLODE)
 718                                         {
 719                                                 u16b flg = (PROJECT_STOP | PROJECT_JUMP | PROJECT_KILL | PROJECT_GRID);
 720
 721                                                 sound(SOUND_EXPLODE); /* No explode sound - use breath fire instead */
 722                                                 project(shooter_ptr, 0, ((shooter_ptr->concent + 1) / 2 + 1), ny, nx, tdam, GF_MISSILE, flg, -1);
 723                                                 break;
 724                                         }
 725
 726                                         /* Sniper */
 727                                         if (snipe_type == SP_HOLYNESS)
 728                                         {
 729                                                 shooter_ptr->current_floor_ptr->grid_array[ny][nx].info |= (CAVE_GLOW);
 730                                                 note_spot(shooter_ptr, ny, nx);
 731                                                 lite_spot(shooter_ptr, ny, nx);
 732                                         }
 733
 734                                         /* Hit the monster, check for death */
 735                                         if (mon_take_hit(shooter_ptr, c_mon_ptr->m_idx, tdam, &fear, extract_note_dies(real_r_idx(m_ptr))))
 736                                         {
 737                                                 /* Dead monster */
 738                                         }
 739
 740                                         /* No death */
 741                                         else
 742                                         {
 743                                                 /* STICK TO */
 744                                                 if (object_is_fixed_artifact(q_ptr) &&
 745                                                         (shooter_ptr->pclass != CLASS_SNIPER || shooter_ptr->concent == 0))
 746                                                 {
 747                                                         GAME_TEXT m_name[MAX_NLEN];
 748
 749                                                         monster_desc(shooter_ptr, m_name, m_ptr, 0);
 750
 751                                                         stick_to = TRUE;
 752                                                         msg_format(_("%sは%sに突き刺さった！", "%^s is stuck in %s!"), o_name, m_name);
 753                                                 }
 754
 755                                                 message_pain(shooter_ptr, c_mon_ptr->m_idx, tdam);
 756
 757                                                 /* Anger the monster */
 758                                                 if (tdam > 0) anger_monster(shooter_ptr, m_ptr);
 759
 760                                                 if (fear && m_ptr->ml)
 761                                                 {
 762                                                         GAME_TEXT m_name[MAX_NLEN];
 763                                                         sound(SOUND_FLEE);
 764                                                         monster_desc(shooter_ptr, m_name, m_ptr, 0);
 765                                                         msg_format(_("%^sは恐怖して逃げ出した！", "%^s flees in terror!"), m_name);
 766                                                 }
 767
 768                                                 set_target(m_ptr, shooter_ptr->y, shooter_ptr->x);
 769
 770                                                 /* Sniper */
 771                                                 if (snipe_type == SP_RUSH)
 772                                                 {
 773                                                         int n = randint1(5) + 3;
 774                                                         MONSTER_IDX m_idx = c_mon_ptr->m_idx;
 775
 776                                                         for (; cur_dis <= tdis; )
 777                                                         {
 778                                                                 POSITION ox = nx;
 779                                                                 POSITION oy = ny;
 780
 781                                                                 if (!n) break;
 782
 783                                                                 /* Calculate the new location (see "project()") */
 784                                                                 mmove2(&ny, &nx, shooter_ptr->y, shooter_ptr->x, ty, tx);
 785
 786                                                                 /* Stopped by wilderness boundary */
 787                                                                 if (!in_bounds2(shooter_ptr->current_floor_ptr, ny, nx)) break;
 788
 789                                                                 /* Stopped by walls/doors */
 790                                                                 if (!player_can_enter(shooter_ptr, shooter_ptr->current_floor_ptr->grid_array[ny][nx].feat, 0)) break;
 791
 792                                                                 /* Stopped by monsters */
 793                                                                 if (!is_cave_empty_bold(shooter_ptr, ny, nx)) break;
 794
 795                                                                 shooter_ptr->current_floor_ptr->grid_array[ny][nx].m_idx = m_idx;
 796                                                                 shooter_ptr->current_floor_ptr->grid_array[oy][ox].m_idx = 0;
 797
 798                                                                 m_ptr->fx = nx;
 799                                                                 m_ptr->fy = ny;
 800
 801                                                                 update_monster(shooter_ptr, c_mon_ptr->m_idx, TRUE);
 802
 803                                                                 lite_spot(shooter_ptr, ny, nx);
 804                                                                 lite_spot(shooter_ptr, oy, ox);
 805
 806                                                                 Term_fresh();
 807                                                                 Term_xtra(TERM_XTRA_DELAY, msec);
 808
 809                                                                 x = nx;
 810                                                                 y = ny;
 811                                                                 cur_dis++;
 812                                                                 n--;
 813                                                         }
 814                                                 }
 815                                         }
 816                                 }
 817
 818                                 /* Sniper */
 819                                 if (snipe_type == SP_PIERCE)
 820                                 {
 821                                         if (shooter_ptr->concent < 1) break;
 822                                         shooter_ptr->concent--;
 823                                         continue;
 824                                 }
 825
 826                                 /* Stop looking */
 827                                 break;
 828                         }
 829                 }
 830
 831                 /* Chance of breakage (during attacks) */
 832                 j = (hit_body ? breakage_chance(shooter_ptr, q_ptr, shooter_ptr->pclass == CLASS_ARCHER, snipe_type) : 0);
 833
 834                 if (stick_to)
 835                 {
 836                         MONSTER_IDX m_idx = shooter_ptr->current_floor_ptr->grid_array[y][x].m_idx;
 837                         monster_type *m_ptr = &shooter_ptr->current_floor_ptr->m_list[m_idx];
 838                         OBJECT_IDX o_idx = o_pop(shooter_ptr->current_floor_ptr);
 839
 840                         if (!o_idx)
 841                         {
 842                                 msg_format(_("%sはどこかへ行った。", "The %s went somewhere."), o_name);
 843                                 if (object_is_fixed_artifact(q_ptr))
 844                                 {
 845                                         a_info[j_ptr->name1].cur_num = 0;
 846                                 }
 847                                 return;
 848                         }
 849
 850                         o_ptr = &shooter_ptr->current_floor_ptr->o_list[o_idx];
 851                         object_copy(o_ptr, q_ptr);
 852
 853                         /* Forget mark */
 854                         o_ptr->marked &= OM_TOUCHED;
 855
 856                         /* Forget location */
 857                         o_ptr->iy = o_ptr->ix = 0;
 858
 859                         /* Memorize monster */
 860                         o_ptr->held_m_idx = m_idx;
 861
 862                         /* Build a stack */
 863                         o_ptr->next_o_idx = m_ptr->hold_o_idx;
 864
 865                         /* Carry object */
 866                         m_ptr->hold_o_idx = o_idx;
 867                 }
 868                 else if (cave_have_flag_bold(shooter_ptr->current_floor_ptr, y, x, FF_PROJECT))
 869                 {
 870                         /* Drop (or break) near that location */
 871                         (void)drop_near(shooter_ptr, q_ptr, j, y, x);
 872                 }
 873                 else
 874                 {
 875                         /* Drop (or break) near that location */
 876                         (void)drop_near(shooter_ptr, q_ptr, j, prev_y, prev_x);
 877                 }
 878
 879                 /* Sniper - Repeat shooting when double shots */
 880         }
 881
 882         /* Sniper - Loose his/her concentration after any shot */
 883         if (shooter_ptr->concent) reset_concentration(shooter_ptr, FALSE);
 884 }
 885
 886
 887 /*!
 888 * @brief プレイヤーからモンスターへの射撃命中判定 /
 889 * Determine if the player "hits" a monster (normal combat).
 890 * @param chance 基本命中値
 891 * @param m_ptr モンスターの構造体参照ポインタ
 892 * @param vis 目標を視界に捕らえているならばTRUEを指定
 893 * @param o_name メッセージ表示時のモンスター名
 894 * @return 命中と判定された場合TRUEを返す
 895 * @note Always miss 5%, always hit 5%, otherwise random.
 896 */
 897 bool test_hit_fire(player_type *shooter_ptr, int chance, monster_type *m_ptr, int vis, char* o_name)
 898 {
 899         int k;
 900         ARMOUR_CLASS ac;
 901         monster_race *r_ptr = &r_info[m_ptr->r_idx];
 902
 903         /* Percentile dice */
 904         k = randint1(100);
 905
 906         /* Snipers with high-concentration reduce instant miss percentage.*/
 907         k += shooter_ptr->concent;
 908
 909         /* Hack -- Instant miss or hit */
 910         if (k <= 5) return FALSE;
 911         if (k > 95) return TRUE;
 912
 913         if (shooter_ptr->pseikaku == PERSONALITY_LAZY)
 914                 if (one_in_(20)) return FALSE;
 915
 916         /* Never hit */
 917         if (chance <= 0) return FALSE;
 918
 919         ac = r_ptr->ac;
 920         if (shooter_ptr->concent)
 921         {
 922                 ac *= (8 - shooter_ptr->concent);
 923                 ac /= 8;
 924         }
 925
 926         if (m_ptr->r_idx == MON_GOEMON && !MON_CSLEEP(m_ptr)) ac *= 3;
 927
 928         /* Invisible monsters are harder to hit */
 929         if (!vis) chance = (chance + 1) / 2;
 930
 931         /* Power competes against armor */
 932         if (randint0(chance) < (ac * 3 / 4))
 933         {
 934                 if (m_ptr->r_idx == MON_GOEMON && !MON_CSLEEP(m_ptr))
 935                 {
 936                         GAME_TEXT m_name[MAX_NLEN];
 937                         monster_desc(shooter_ptr, m_name, m_ptr, 0);
 938                         msg_format(_("%sは%sを斬り捨てた！", "%s cuts down %s!"), m_name, o_name);
 939                 }
 940                 return FALSE;
 941         }
 942
 943         /* Assume hit */
 944         return TRUE;
 945 }
 946
 947
 948
 949
 950 /*!
 951 * @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 /
 952 * Critical hits (from objects thrown by player) Factor in item weight, total plusses, and player level.
 953 * @param weight 矢弾の重量
 954 * @param plus_ammo 矢弾の命中修正
 955 * @param plus_bow 弓の命中修正
 956 * @param dam 現在算出中のダメージ値
 957 * @return クリティカル修正が入ったダメージ値
 958 */
 959 HIT_POINT critical_shot(player_type *shooter_ptr, WEIGHT weight, int plus_ammo, int plus_bow, HIT_POINT dam)
 960 {
 961         int i, k;
 962         object_type *j_ptr = &shooter_ptr->inventory_list[INVEN_BOW];
 963
 964         /* Extract "shot" power */
 965         i = shooter_ptr->to_h_b + plus_ammo;
 966
 967         if (shooter_ptr->tval_ammo == TV_BOLT)
 968                 i = (shooter_ptr->skill_thb + (shooter_ptr->weapon_exp[0][j_ptr->sval] / 400 + i) * BTH_PLUS_ADJ);
 969         else
 970                 i = (shooter_ptr->skill_thb + ((shooter_ptr->weapon_exp[0][j_ptr->sval] - (WEAPON_EXP_MASTER / 2)) / 200 + i) * BTH_PLUS_ADJ);
 971
 972
 973         /* Snipers can shot more critically with crossbows */
 974         if (shooter_ptr->concent) i += ((i * shooter_ptr->concent) / 5);
 975         if ((shooter_ptr->pclass == CLASS_SNIPER) && (shooter_ptr->tval_ammo == TV_BOLT)) i *= 2;
 976
 977         /* Good bow makes more critical */
 978         i += plus_bow * 8 * (shooter_ptr->concent ? shooter_ptr->concent + 5 : 5);
 979
 980         /* Critical hit */
 981         if (randint1(10000) <= i)
 982         {
 983                 k = weight * randint1(500);
 984
 985                 if (k < 900)
 986                 {
 987                         msg_print(_("手ごたえがあった！", "It was a good hit!"));
 988                         dam += (dam / 2);
 989                 }
 990                 else if (k < 1350)
 991                 {
 992                         msg_print(_("かなりの手ごたえがあった！", "It was a great hit!"));
 993                         dam *= 2;
 994                 }
 995                 else
 996                 {
 997                         msg_print(_("会心の一撃だ！", "It was a superb hit!"));
 998                         dam *= 3;
 999                 }
1000         }
1001
1002         return (dam);
1003 }
1004
1005
1006
1007
1008 /*!
1009  * @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
1010  * @param sval 射撃武器のアイテム副分類ID
1011  * @return 消費する基本エネルギー
1012  */
1013 ENERGY bow_energy(OBJECT_SUBTYPE_VALUE sval)
1014 {
1015         ENERGY energy = 10000;
1016
1017         /* Analyze the launcher */
1018         switch (sval)
1019         {
1020                 /* Sling and ammo */
1021         case SV_SLING:
1022         {
1023                 energy = 8000;
1024                 break;
1025         }
1026
1027         /* Short Bow and Arrow */
1028         case SV_SHORT_BOW:
1029         {
1030                 energy = 10000;
1031                 break;
1032         }
1033
1034         /* Long Bow and Arrow */
1035         case SV_LONG_BOW:
1036         {
1037                 energy = 10000;
1038                 break;
1039         }
1040
1041         /* Bow of irresponsiblity and Arrow */
1042         case SV_NAMAKE_BOW:
1043         {
1044                 energy = 7777;
1045                 break;
1046         }
1047
1048         /* Light Crossbow and Bolt */
1049         case SV_LIGHT_XBOW:
1050         {
1051                 energy = 12000;
1052                 break;
1053         }
1054
1055         /* Heavy Crossbow and Bolt */
1056         case SV_HEAVY_XBOW:
1057         {
1058                 energy = 13333;
1059                 break;
1060         }
1061         }
1062
1063         return (energy);
1064 }
1065
1066
1067 /*
1068  * Return bow tmul
1069  */
1070 int bow_tmul(OBJECT_SUBTYPE_VALUE sval)
1071 {
1072         int tmul = 0;
1073
1074         /* Analyze the launcher */
1075         switch (sval)
1076         {
1077                 /* Sling and ammo */
1078         case SV_SLING:
1079         {
1080                 tmul = 2;
1081                 break;
1082         }
1083
1084         /* Short Bow and Arrow */
1085         case SV_SHORT_BOW:
1086         {
1087                 tmul = 2;
1088                 break;
1089         }
1090
1091         /* Long Bow and Arrow */
1092         case SV_LONG_BOW:
1093         {
1094                 tmul = 3;
1095                 break;
1096         }
1097
1098         /* Bow of irresponsiblity and Arrow */
1099         case SV_NAMAKE_BOW:
1100         {
1101                 tmul = 3;
1102                 break;
1103         }
1104
1105         /* Light Crossbow and Bolt */
1106         case SV_LIGHT_XBOW:
1107         {
1108                 tmul = 3;
1109                 break;
1110         }
1111
1112         /* Heavy Crossbow and Bolt */
1113         case SV_HEAVY_XBOW:
1114         {
1115                 tmul = 4;
1116                 break;
1117         }
1118         }
1119
1120         return (tmul);
1121 }
1122
1123
1124 /*!
1125  * @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
1126  * @param shooter_ptr 射撃を行うクリーチャー参照ポインタ
1127  * @param plus_ammo 矢弾のダメージ修正
1128  * @param plus_bow 弓のダメージ修正
1129  * @return ダメージ期待値
1130  * @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。
1131  */
1132 HIT_POINT calc_crit_ratio_shot(player_type* shooter_ptr, HIT_POINT plus_ammo, HIT_POINT plus_bow)
1133 {
1134         HIT_POINT i;
1135         object_type *j_ptr = &shooter_ptr->inventory_list[INVEN_BOW];
1136
1137         /* Extract "shot" power */
1138         i = shooter_ptr->to_h_b + plus_ammo;
1139
1140         if (shooter_ptr->tval_ammo == TV_BOLT)
1141                 i = (shooter_ptr->skill_thb + (shooter_ptr->weapon_exp[0][j_ptr->sval] / 400 + i) * BTH_PLUS_ADJ);
1142         else
1143                 i = (shooter_ptr->skill_thb + ((shooter_ptr->weapon_exp[0][j_ptr->sval] - (WEAPON_EXP_MASTER / 2)) / 200 + i) * BTH_PLUS_ADJ);
1144
1145         /* Snipers can shot more critically with crossbows */
1146         if (shooter_ptr->concent) i += ((i * shooter_ptr->concent) / 5);
1147         if ((shooter_ptr->pclass == CLASS_SNIPER) && (shooter_ptr->tval_ammo == TV_BOLT)) i *= 2;
1148
1149         /* Good bow makes more critical */
1150         i += plus_bow * 8 * (shooter_ptr->concent ? shooter_ptr->concent + 5 : 5);
1151
1152         if (i < 0) i = 0;
1153
1154         return i;
1155 }
1156
1157 /*!
1158  * @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
1159  * @param weight 武器の重量
1160  * @param plus_ammo 矢弾のダメージ修正
1161  * @param plus_bow 弓のダメージ修正
1162  * @param dam 基本ダメージ量
1163  * @return ダメージ期待値
1164  */
1165 HIT_POINT calc_expect_crit_shot(player_type *shooter_ptr, WEIGHT weight, int plus_ammo, int plus_bow, HIT_POINT dam)
1166 {
1167         u32b num;
1168         int i, k, crit;
1169         i = calc_crit_ratio_shot(shooter_ptr, plus_ammo, plus_bow);
1170
1171         k = 0;
1172         num = 0;
1173
1174         crit = MIN(500, 900 / weight);
1175         num += dam * 3 / 2 * crit;
1176         k = crit;
1177
1178         crit = MIN(500, 1350 / weight);
1179         crit -= k;
1180         num += dam * 2 * crit;
1181         k += crit;
1182
1183         if (k < 500)
1184         {
1185                 crit = 500 - k;
1186                 num += dam * 3 * crit;
1187         }
1188
1189         num /= 500;
1190
1191         num *= i;
1192         num += (10000 - i) * dam;
1193         num /= 10000;
1194
1195         return num;
1196 }
1197
1198 /*!
1199  * @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
1200  * @param shooter_ptr プレーヤーへの参照ポインタ
1201  * @param weight 武器の重量
1202  * @param plus 武器のダメージ修正
1203  * @param dam 基本ダメージ
1204  * @param meichuu 命中値
1205  * @param dokubari 毒針処理か否か
1206  * @return ダメージ期待値
1207  */
1208 HIT_POINT calc_expect_crit(player_type *shooter_ptr, WEIGHT weight, int plus, HIT_POINT dam, s16b meichuu, bool dokubari)
1209 {
1210         u32b k, num;
1211         if (dokubari) return dam;
1212
1213         int i = (weight + (meichuu * 3 + plus * 5) + shooter_ptr->skill_thn);
1214         if (i < 0) i = 0;
1215
1216         k = weight;
1217         num = 0;
1218
1219         if (k < 400)                                            num += (2 * dam + 5) * (400 - k);
1220         if (k < 700)                                            num += (2 * dam + 10) * (MIN(700, k + 650) - MAX(400, k));
1221         if (k > (700 - 650) && k < 900)         num += (3 * dam + 15) * (MIN(900, k + 650) - MAX(700, k));
1222         if (k > (900 - 650) && k < 1300)                num += (3 * dam + 20) * (MIN(1300, k + 650) - MAX(900, k));
1223         if (k > (1300 - 650))                                   num += (7 * dam / 2 + 25) * MIN(650, k - (1300 - 650));
1224
1225         num /= 650;
1226         if (shooter_ptr->pclass == CLASS_NINJA)
1227         {
1228                 num *= i;
1229                 num += (4444 - i) * dam;
1230                 num /= 4444;
1231         }
1232         else
1233         {
1234                 num *= i;
1235                 num += (5000 - i) * dam;
1236                 num /= 5000;
1237         }
1238
1239         return num;
1240 }
1241