src/melee2.c

   1 /* File: melee2.c */
   2
   3 /* Purpose: Monster spells and movement */
   4
   5 /*
   6 * Copyright (c) 1989 James E. Wilson, Robert A. Koeneke
   7 *
   8 * This software may be copied and distributed for educational, research, and
   9 * not for profit purposes provided that this copyright and statement are
  10 * included in all such copies.
  11 */
  12
  13 /*
  14 * This file has several additions to it by Keldon Jones (keldon@umr.edu)
  15 * to improve the general quality of the AI (version 0.1.1).
  16 */
  17
  18 #include "angband.h"
  19
  20 #define SPEAK_CHANCE 8
  21 #define GRINDNOISE 20
  22 #define CYBERNOISE 20
  23
  24 /*
  25  * Calculate the direction to the next enemy
  26  */
  27 static bool get_enemy_dir(int m_idx, int *mm)
  28 {
  29         int i;
  30         int x = 0, y = 0;
  31         int t_idx;
  32         int start;
  33         int plus = 1;
  34
  35         monster_type *m_ptr = &m_list[m_idx];
  36         monster_race *r_ptr = &r_info[m_ptr->r_idx];
  37
  38         monster_type *t_ptr;
  39
  40         if (riding_t_m_idx && (m_ptr->fx == px) && (m_ptr->fy == py))
  41         {
  42                 y = m_list[riding_t_m_idx].fy;
  43                 x = m_list[riding_t_m_idx].fx;
  44         }
  45         else if (is_pet(m_ptr) && pet_t_m_idx)
  46         {
  47                 y = m_list[pet_t_m_idx].fy;
  48                 x = m_list[pet_t_m_idx].fx;
  49         }
  50         else
  51         {
  52                 if (p_ptr->inside_battle)
  53                 {
  54                         start = randint1(m_max-1)+m_max;
  55                         if(randint0(2)) plus = -1;
  56                 }
  57                 else start = m_max + 1;
  58
  59                 /* Scan thru all monsters */
  60                 for (i = start; ((i < start + m_max) && (i > start - m_max)); i+=plus)
  61                 {
  62                         int dummy = (i % m_max);
  63                         bool can_pass_wall;
  64
  65                         if (!dummy) continue;
  66
  67                         t_idx = dummy;
  68                         t_ptr = &m_list[t_idx];
  69
  70                         /* The monster itself isn't a target */
  71                         if (t_ptr == m_ptr) continue;
  72
  73                         /* Paranoia -- Skip dead monsters */
  74                         if (!t_ptr->r_idx) continue;
  75
  76                         if (is_pet(m_ptr))
  77                         {
  78                                 /* Hack -- only fight away from player */
  79                                 if (p_ptr->pet_follow_distance < 0)
  80                                 {
  81                                         /* No fighting near player */
  82                                         if (t_ptr->cdis <= (0 - p_ptr->pet_follow_distance))
  83                                         {
  84                                                 continue;
  85                                         }
  86                                 }
  87                                 /* Hack -- no fighting away from player */
  88                                 else if ((m_ptr->cdis < t_ptr->cdis) &&
  89                                                         (t_ptr->cdis > p_ptr->pet_follow_distance))
  90                                 {
  91                                         continue;
  92                                 }
  93
  94                                 if (r_ptr->aaf < t_ptr->cdis) continue;
  95                         }
  96
  97                         /* Monster must be 'an enemy' */
  98                         if (!are_enemies(m_ptr, t_ptr)) continue;
  99
 100                         can_pass_wall = (((r_ptr->flags2 & RF2_PASS_WALL) && ((m_idx != p_ptr->riding) || (p_ptr->pass_wall))) || ((r_ptr->flags2 & RF2_KILL_WALL) && (m_idx != p_ptr->riding)));
 101
 102                         /* Monster must be projectable if we can't pass through walls */
 103                         if (!can_pass_wall &&
 104                                 !projectable(m_ptr->fy, m_ptr->fx, t_ptr->fy, t_ptr->fx))
 105                         {
 106                                 continue;
 107                         }
 108                         if (can_pass_wall &&
 109                                 !in_disintegration_range(m_ptr->fy, m_ptr->fx, t_ptr->fy, t_ptr->fx))
 110                         {
 111                                 continue;
 112                         }
 113
 114                         /* OK -- we've got a target */
 115                         y = t_ptr->fy;
 116                         x = t_ptr->fx;
 117
 118                         break;
 119                 }
 120                 if (!x && !y) return FALSE;
 121         }
 122
 123         /* Extract the direction */
 124         x -= m_ptr->fx;
 125         y -= m_ptr->fy;
 126
 127         /* North */
 128         if ((y < 0) && (x == 0))
 129         {
 130                 mm[0] = 8;
 131                 mm[1] = 7;
 132                 mm[2] = 9;
 133         }
 134         /* South */
 135         else if ((y > 0) && (x == 0))
 136         {
 137                 mm[0] = 2;
 138                 mm[1] = 1;
 139                 mm[2] = 3;
 140         }
 141         /* East */
 142         else if ((x > 0) && (y == 0))
 143         {
 144                 mm[0] = 6;
 145                 mm[1] = 9;
 146                 mm[2] = 3;
 147         }
 148         /* West */
 149         else if ((x < 0) && (y == 0))
 150         {
 151                 mm[0] = 4;
 152                 mm[1] = 7;
 153                 mm[2] = 1;
 154         }
 155         /* North-West */
 156         else if ((y < 0) && (x < 0))
 157         {
 158                 mm[0] = 7;
 159                 mm[1] = 4;
 160                 mm[2] = 8;
 161         }
 162         /* North-East */
 163         else if ((y < 0) && (x > 0))
 164         {
 165                 mm[0] = 9;
 166                 mm[1] = 6;
 167                 mm[2] = 8;
 168         }
 169         /* South-West */
 170         else if ((y > 0) && (x < 0))
 171         {
 172                 mm[0] = 1;
 173                 mm[1] = 4;
 174                 mm[2] = 2;
 175         }
 176         /* South-East */
 177         else if ((y > 0) && (x > 0))
 178         {
 179                 mm[0] = 3;
 180                 mm[1] = 6;
 181                 mm[2] = 2;
 182         }
 183
 184         /* Found a monster */
 185         return TRUE;
 186 }
 187
 188
 189 /*
 190  * Hack, based on mon_take_hit... perhaps all monster attacks on
 191  * other monsters should use this?
 192  */
 193 void mon_take_hit_mon(bool is_psy_spear, int m_idx, int dam, bool *fear, cptr note, int who)
 194 {
 195         monster_type    *m_ptr = &m_list[m_idx];
 196
 197         monster_race    *r_ptr = &r_info[m_ptr->r_idx];
 198
 199         char m_name[160];
 200
 201         bool seen = m_ptr->ml;
 202
 203         /* Can the player be aware of this attack? */
 204         bool known = (m_ptr->cdis <= MAX_SIGHT);
 205
 206         /* Extract monster name */
 207         monster_desc(m_name, m_ptr, 0);
 208
 209         /* Redraw (later) if needed */
 210         if (p_ptr->health_who == m_idx) p_ptr->redraw |= (PR_HEALTH);
 211         if (p_ptr->riding == m_idx) p_ptr->redraw |= (PR_UHEALTH);
 212
 213         /* Wake it up */
 214         m_ptr->csleep = 0;
 215
 216         if (p_ptr->riding && (m_idx == p_ptr->riding)) disturb(1, 0);
 217
 218         if (m_ptr->invulner && randint0(PENETRATE_INVULNERABILITY))
 219         {
 220                 if (seen)
 221                 {
 222 #ifdef JP
 223 msg_format("%^s¤Ï¥À¥á¡¼¥¸¤ò¼õ¤±¤Ê¤¤¡£", m_name);
 224 #else
 225                         msg_format("%^s is unharmed.", m_name);
 226 #endif
 227
 228                 }
 229
 230                 return;
 231         }
 232
 233         if (r_ptr->flags3 & RF3_RES_ALL)
 234         {
 235                 if(dam > 0)
 236                 {
 237                         dam /= 100;
 238                         if((dam == 0) && one_in_(3)) dam = 1;
 239                 }
 240                 if (dam==0)
 241                 {
 242                         if (seen)
 243                         {
 244 #ifdef JP
 245 msg_format("%^s¤Ï¥À¥á¡¼¥¸¤ò¼õ¤±¤Ê¤¤¡£", m_name);
 246 #else
 247                                 msg_format("%^s is unharmed.", m_name);
 248 #endif
 249
 250                         }
 251                         return;
 252                 }
 253         }
 254
 255         /* Hurt it */
 256         m_ptr->hp -= dam;
 257
 258         /* It is dead now... or is it? */
 259         if (m_ptr->hp < 0)
 260         {
 261                 if (((r_ptr->flags1 & RF1_UNIQUE) ||
 262                         (r_ptr->flags7 & RF7_UNIQUE_7) ||
 263                         (r_ptr->flags1 & RF1_QUESTOR)) &&
 264                     !p_ptr->inside_battle)
 265                 {
 266                         m_ptr->hp = 1;
 267                 }
 268                 else
 269                 {
 270                         /* Make a sound */
 271                         if (!monster_living(r_ptr))
 272                         {
 273                                 sound(SOUND_N_KILL);
 274                         }
 275                         else
 276                         {
 277                                 sound(SOUND_KILL);
 278                         }
 279
 280                         if (known)
 281                         {
 282                                 monster_desc(m_name, m_ptr, 0x100);
 283                                 /* Unseen death by normal attack */
 284                                 if (!seen)
 285                                 {
 286                                         mon_fight = TRUE;
 287                                 }
 288                                 /* Death by special attack */
 289                                 else if (note)
 290                                 {
 291 #ifdef JP
 292 msg_format("%^s%s", m_name, note);
 293 #else
 294                                         msg_format("%^s%s", m_name, note);
 295 #endif
 296
 297                                 }
 298                                 /* Death by normal attack -- nonliving monster */
 299                                 else if (!monster_living(r_ptr))
 300                                 {
 301 #ifdef JP
 302 msg_format("%^s¤ÏÇË²õ¤µ¤ì¤¿¡£", m_name);
 303 #else
 304                                         msg_format("%^s is destroyed.", m_name);
 305 #endif
 306
 307                                 }
 308                                 /* Death by normal attack -- living monster */
 309                                 else
 310                                 {
 311 #ifdef JP
 312 msg_format("%^s¤Ï»¦¤µ¤ì¤¿¡£", m_name);
 313 #else
 314                                         msg_format("%^s is killed.", m_name);
 315 #endif
 316
 317                                 }
 318                         }
 319
 320                         monster_gain_exp(who, m_ptr->r_idx);
 321
 322                         /* Generate treasure */
 323                         monster_death(m_idx, FALSE);
 324
 325                         /* Delete the monster */
 326                         delete_monster_idx(m_idx);
 327
 328                         /* Not afraid */
 329                         (*fear) = FALSE;
 330
 331                         /* Monster is dead */
 332                         return;
 333                 }
 334         }
 335
 336 #ifdef ALLOW_FEAR
 337
 338         /* Mega-Hack -- Pain cancels fear */
 339         if (m_ptr->monfear && (dam > 0))
 340         {
 341                 int tmp = randint1(dam / 4);
 342
 343                 /* Cure a little fear */
 344                 if (tmp < m_ptr->monfear)
 345                 {
 346                         /* Reduce fear */
 347                         m_ptr->monfear -= tmp;
 348                 }
 349
 350                 /* Cure all the fear */
 351                 else
 352                 {
 353                         /* Cure fear */
 354                         m_ptr->monfear = 0;
 355
 356                         /* No more fear */
 357                         (*fear) = FALSE;
 358                 }
 359         }
 360
 361         /* Sometimes a monster gets scared by damage */
 362         if (!m_ptr->monfear && !(r_ptr->flags3 & RF3_NO_FEAR))
 363         {
 364                 int             percentage;
 365
 366                 /* Percentage of fully healthy */
 367                 percentage = (100L * m_ptr->hp) / m_ptr->maxhp;
 368
 369                 /*
 370                 * Run (sometimes) if at 10% or less of max hit points,
 371                 * or (usually) when hit for half its current hit points
 372                  */
 373                 if (((percentage <= 10) && (randint0(10) < percentage)) ||
 374                         ((dam >= m_ptr->hp) && (randint0(100) < 80)))
 375                 {
 376                         /* Hack -- note fear */
 377                         (*fear) = TRUE;
 378
 379                         /* XXX XXX XXX Hack -- Add some timed fear */
 380                         m_ptr->monfear += (randint1(10) +
 381                                 (((dam >= m_ptr->hp) && (percentage > 7)) ?
 382                                 20 : ((11 - percentage) * 5)));
 383                 }
 384         }
 385
 386 #endif /* ALLOW_FEAR */
 387
 388         if ((dam > 0) && !is_pet(m_ptr) && !is_friendly(m_ptr) && (who != m_idx))
 389         {
 390                 if (is_pet(&m_list[who]) && (m_ptr->target_y != py) && (m_ptr->target_x != px))
 391                 {
 392                         set_target(m_ptr, m_list[who].fy, m_list[who].fx);
 393                 }
 394         }
 395
 396         if (p_ptr->riding && (p_ptr->riding == m_idx) && (dam > 0))
 397         {
 398                 char m_name[80];
 399
 400                 /* Extract monster name */
 401                 monster_desc(m_name, m_ptr, 0);
 402
 403                 if (m_ptr->hp > m_ptr->maxhp/3) dam = (dam + 1) / 2;
 404                 if (rakuba((dam > 200) ? 200 : dam, FALSE))
 405                 {
 406 #ifdef JP
 407 msg_format("%^s¤Ë¿¶¤êÍî¤È¤µ¤ì¤¿¡ª", m_name);
 408 #else
 409                                 msg_format("You have thrown off from %s!", m_name);
 410 #endif
 411                 }
 412         }
 413
 414         /* Not dead yet */
 415         return;
 416 }
 417
 418
 419 /*
 420  * Returns whether a given monster will try to run from the player.
 421  *
 422  * Monsters will attempt to avoid very powerful players.  See below.
 423  *
 424  * Because this function is called so often, little details are important
 425  * for efficiency.  Like not using "mod" or "div" when possible.  And
 426  * attempting to check the conditions in an optimal order.  Note that
 427  * "(x << 2) == (x * 4)" if "x" has enough bits to hold the result.
 428  *
 429  * Note that this function is responsible for about one to five percent
 430  * of the processor use in normal conditions...
 431  */
 432 static int mon_will_run(int m_idx)
 433 {
 434         monster_type *m_ptr = &m_list[m_idx];
 435
 436 #ifdef ALLOW_TERROR
 437
 438         monster_race *r_ptr = &r_info[m_ptr->r_idx];
 439
 440         u16b p_lev, m_lev;
 441         u16b p_chp, p_mhp;
 442         u16b m_chp, m_mhp;
 443         u32b p_val, m_val;
 444
 445 #endif
 446
 447         /* Friends can be commanded to avoid the player */
 448         if (is_pet(m_ptr))
 449         {
 450                 /* Are we trying to avoid the player? */
 451                 return ((p_ptr->pet_follow_distance < 0) &&
 452                                   (m_ptr->cdis <= (0 - p_ptr->pet_follow_distance)));
 453         }
 454
 455         /* Keep monsters from running too far away */
 456         if (m_ptr->cdis > MAX_SIGHT + 5) return (FALSE);
 457
 458         /* All "afraid" monsters will run away */
 459         if (m_ptr->monfear) return (TRUE);
 460
 461 #ifdef ALLOW_TERROR
 462
 463         /* Nearby monsters will not become terrified */
 464         if (m_ptr->cdis <= 5) return (FALSE);
 465
 466         /* Examine player power (level) */
 467         p_lev = p_ptr->lev;
 468
 469         /* Examine monster power (level plus morale) */
 470         m_lev = r_ptr->level + (m_idx & 0x08) + 25;
 471
 472         /* Optimize extreme cases below */
 473         if (m_lev > p_lev + 4) return (FALSE);
 474         if (m_lev + 4 <= p_lev) return (TRUE);
 475
 476         /* Examine player health */
 477         p_chp = p_ptr->chp;
 478         p_mhp = p_ptr->mhp;
 479
 480         /* Examine monster health */
 481         m_chp = m_ptr->hp;
 482         m_mhp = m_ptr->maxhp;
 483
 484         /* Prepare to optimize the calculation */
 485         p_val = (p_lev * p_mhp) + (p_chp << 2); /* div p_mhp */
 486         m_val = (m_lev * m_mhp) + (m_chp << 2); /* div m_mhp */
 487
 488         /* Strong players scare strong monsters */
 489         if (p_val * m_mhp > m_val * p_mhp) return (TRUE);
 490
 491 #endif
 492
 493         /* Assume no terror */
 494         return (FALSE);
 495 }
 496
 497
 498
 499
 500 /*
 501  * Search spell castable grid
 502  */
 503 static bool get_moves_aux2(int m_idx, int *yp, int *xp)
 504 {
 505         int i, y, x, y1, x1, best = 999;
 506
 507         cave_type *c_ptr;
 508         bool can_open_door = FALSE;
 509         int now_cost;
 510
 511         monster_type *m_ptr = &m_list[m_idx];
 512         monster_race *r_ptr = &r_info[m_ptr->r_idx];
 513
 514         /* Monster location */
 515         y1 = m_ptr->fy;
 516         x1 = m_ptr->fx;
 517
 518         /* Monster can already cast spell to player */
 519         if (projectable(y1, x1, py, px)) return (FALSE);
 520
 521         /* Set current grid cost */
 522         now_cost = cave[y1][x1].cost;
 523         if (now_cost == 0) now_cost = 999;
 524
 525         /* Can monster bash or open doors? */
 526         if (r_ptr->flags2 & (RF2_BASH_DOOR | RF2_OPEN_DOOR))
 527         {
 528                 can_open_door = TRUE;
 529         }
 530
 531         /* Check nearby grids, diagonals first */
 532         for (i = 7; i >= 0; i--)
 533         {
 534                 int cost;
 535
 536                 /* Get the location */
 537                 y = y1 + ddy_ddd[i];
 538                 x = x1 + ddx_ddd[i];
 539
 540                 /* Ignore locations off of edge */
 541                 if (!in_bounds2(y, x)) continue;
 542
 543                 /* Simply move to player */
 544                 if ((y == py) && (x == px)) return (FALSE);
 545
 546                 c_ptr = &cave[y][x];
 547
 548                 cost = c_ptr->cost;
 549
 550                 /* Monster cannot kill or pass walls */
 551                 if (!(((r_ptr->flags2 & RF2_PASS_WALL) && ((m_idx != p_ptr->riding) || p_ptr->pass_wall)) || (r_ptr->flags2 & RF2_KILL_WALL)))
 552                 {
 553                         if (cost == 0) continue;
 554                         if (!can_open_door && is_closed_door(c_ptr->feat)) continue;
 555                 }
 556
 557                 /* Hack -- for kill or pass wall monster.. */
 558                 if (cost == 0) cost = 998;
 559
 560                 if (now_cost < cost) continue;
 561
 562                 if (!projectable(y, x, py, px)) continue;
 563
 564                 /* Accept louder sounds */
 565                 if (best < cost) continue;
 566                 best = cost;
 567
 568                 (*yp) = y1 + ddy_ddd[i];
 569                 (*xp) = x1 + ddx_ddd[i];
 570         }
 571
 572         /* No legal move (?) */
 573         if (best == 999) return (FALSE);
 574
 575         /* Success */
 576         return (TRUE);
 577 }
 578
 579
 580 /*
 581  * Choose the "best" direction for "flowing"
 582  *
 583  * Note that ghosts and rock-eaters are never allowed to "flow",
 584  * since they should move directly towards the player.
 585  *
 586  * Prefer "non-diagonal" directions, but twiddle them a little
 587  * to angle slightly towards the player's actual location.
 588  *
 589  * Allow very perceptive monsters to track old "spoor" left by
 590  * previous locations occupied by the player.  This will tend
 591  * to have monsters end up either near the player or on a grid
 592  * recently occupied by the player (and left via "teleport").
 593  *
 594  * Note that if "smell" is turned on, all monsters get vicious.
 595  *
 596  * Also note that teleporting away from a location will cause
 597  * the monsters who were chasing you to converge on that location
 598  * as long as you are still near enough to "annoy" them without
 599  * being close enough to chase directly.  I have no idea what will
 600  * happen if you combine "smell" with low "aaf" values.
 601  */
 602 static bool get_moves_aux(int m_idx, int *yp, int *xp, bool no_flow)
 603 {
 604         int i, y, x, y1, x1, best;
 605
 606         cave_type *c_ptr;
 607         bool use_sound = FALSE;
 608         bool use_scent = FALSE;
 609
 610         monster_type *m_ptr = &m_list[m_idx];
 611         monster_race *r_ptr = &r_info[m_ptr->r_idx];
 612
 613         /* Can monster cast attack spell? */
 614         if (r_ptr->flags4 & (RF4_ATTACK_MASK) ||
 615             r_ptr->flags5 & (RF5_ATTACK_MASK) ||
 616             r_ptr->flags6 & (RF6_ATTACK_MASK))
 617         {
 618                 /* Can move spell castable grid? */
 619                 if (get_moves_aux2(m_idx, yp, xp)) return (TRUE);
 620         }
 621
 622         /* Monster can't flow */
 623         if (no_flow) return (FALSE);
 624
 625         /* Monster can go through rocks */
 626         if ((r_ptr->flags2 & RF2_PASS_WALL) && ((m_idx != p_ptr->riding) || (p_ptr->pass_wall))) return (FALSE);
 627         if (r_ptr->flags2 & RF2_KILL_WALL) return (FALSE);
 628         if (!cave_floor_bold(py, px) && (cave[py][px].feat != FEAT_TREES)) return (FALSE);
 629
 630         /* Monster location */
 631         y1 = m_ptr->fy;
 632         x1 = m_ptr->fx;
 633
 634         /* Hack -- Player can see us, run towards him */
 635         if (player_has_los_bold(y1, x1)) return (FALSE);
 636
 637         /* Monster grid */
 638         c_ptr = &cave[y1][x1];
 639
 640         /* If we can hear noises, advance towards them */
 641         if (c_ptr->cost)
 642         {
 643                 use_sound = TRUE;
 644                 best = 999;
 645         }
 646
 647         /* Otherwise, try to follow a scent trail */
 648         else if (c_ptr->when)
 649         {
 650                 /* Too old smell */
 651                 if (cave[py][px].when - c_ptr->when > 127) return (FALSE);
 652
 653                 use_scent = TRUE;
 654                 best = 0;
 655         }
 656
 657         /* Otherwise, advance blindly */
 658         else
 659         {
 660                 return (FALSE);
 661         }
 662
 663         /* Check nearby grids, diagonals first */
 664         for (i = 7; i >= 0; i--)
 665         {
 666                 /* Get the location */
 667                 y = y1 + ddy_ddd[i];
 668                 x = x1 + ddx_ddd[i];
 669
 670                 /* Ignore locations off of edge */
 671                 if (!in_bounds2(y, x)) continue;
 672
 673                 c_ptr = &cave[y][x];
 674
 675                 /* We're following a scent trail */
 676                 if (use_scent)
 677                 {
 678                         int when = c_ptr->when;
 679
 680                         /* Accept younger scent */
 681                         if (best > when) continue;
 682                         best = when;
 683                 }
 684
 685                 /* We're using sound */
 686                 else
 687                 {
 688                         int cost;
 689
 690                         if (r_ptr->flags2 & (RF2_BASH_DOOR | RF2_OPEN_DOOR))
 691                                 cost = c_ptr->dist;
 692                         else cost = c_ptr->cost;
 693
 694                         /* Accept louder sounds */
 695                         if ((cost == 0) || (best < cost)) continue;
 696                         best = cost;
 697                 }
 698
 699                 /* Hack -- Save the "twiddled" location */
 700                 (*yp) = py + 16 * ddy_ddd[i];
 701                 (*xp) = px + 16 * ddx_ddd[i];
 702         }
 703
 704         /* No legal move (?) */
 705         if (best == 999 || best == 0) return (FALSE);
 706
 707         /* Success */
 708         return (TRUE);
 709 }
 710
 711
 712 /*
 713 * Provide a location to flee to, but give the player a wide berth.
 714 *
 715 * A monster may wish to flee to a location that is behind the player,
 716 * but instead of heading directly for it, the monster should "swerve"
 717 * around the player so that he has a smaller chance of getting hit.
 718 */
 719 static bool get_fear_moves_aux(int m_idx, int *yp, int *xp)
 720 {
 721         int y, x, y1, x1, fy, fx, gy = 0, gx = 0;
 722         int score = -1;
 723         int i;
 724
 725         monster_type *m_ptr = &m_list[m_idx];
 726
 727         /* Monster location */
 728         fy = m_ptr->fy;
 729         fx = m_ptr->fx;
 730
 731         /* Desired destination */
 732         y1 = fy - (*yp);
 733         x1 = fx - (*xp);
 734
 735         /* Check nearby grids, diagonals first */
 736         for (i = 7; i >= 0; i--)
 737         {
 738                 int dis, s;
 739
 740                 /* Get the location */
 741                 y = fy + ddy_ddd[i];
 742                 x = fx + ddx_ddd[i];
 743
 744                 /* Ignore locations off of edge */
 745                 if (!in_bounds2(y, x)) continue;
 746
 747                 /* Don't move toward player */
 748                 /* if (cave[y][x].dist < 3) continue; */ /* Hmm.. Need it? */
 749
 750                 /* Calculate distance of this grid from our destination */
 751                 dis = distance(y, x, y1, x1);
 752
 753                 /* Score this grid */
 754                 s = 5000 / (dis + 3) - 500 / (cave[y][x].dist + 1);
 755
 756                 /* No negative scores */
 757                 if (s < 0) s = 0;
 758
 759                 /* Ignore lower scores */
 760                 if (s < score) continue;
 761
 762                 /* Save the score and time */
 763                 score = s;
 764
 765                 /* Save the location */
 766                 gy = y;
 767                 gx = x;
 768         }
 769
 770         /* No legal move (?) */
 771         if (score == -1) return (FALSE);
 772
 773         /* Find deltas */
 774         (*yp) = fy - gy;
 775         (*xp) = fx - gx;
 776
 777         /* Success */
 778         return (TRUE);
 779 }
 780
 781 /*
 782  * Hack -- Precompute a bunch of calls to distance() in find_safety() and
 783  * find_hiding().
 784  *
 785  * The pair of arrays dist_offsets_y[n] and dist_offsets_x[n] contain the
 786  * offsets of all the locations with a distance of n from a central point,
 787  * with an offset of (0,0) indicating no more offsets at this distance.
 788  *
 789  * This is, of course, fairly unreadable, but it eliminates multiple loops
 790  * from the previous version.
 791  *
 792  * It is probably better to replace these arrays with code to compute
 793  * the relevant arrays, even if the storage is pre-allocated in hard
 794  * coded sizes.  At the very least, code should be included which is
 795  * able to generate and dump these arrays (ala "los()").  XXX XXX XXX
 796  *
 797  * Also, the storage needs could be halved by using bytes.  XXX XXX XXX
 798  *
 799  * These arrays could be combined into two big arrays, using sub-arrays
 800  * to hold the offsets and lengths of each portion of the sub-arrays, and
 801  * this could perhaps also be used somehow in the "look" code.  XXX XXX XXX
 802  */
 803
 804
 805 static sint d_off_y_0[] =
 806 { 0 };
 807
 808 static sint d_off_x_0[] =
 809 { 0 };
 810
 811
 812 static sint d_off_y_1[] =
 813 { -1, -1, -1, 0, 0, 1, 1, 1, 0 };
 814
 815 static sint d_off_x_1[] =
 816 { -1, 0, 1, -1, 1, -1, 0, 1, 0 };
 817
 818
 819 static sint d_off_y_2[] =
 820 { -1, -1, -2, -2, -2, 0, 0, 1, 1, 2, 2, 2, 0 };
 821
 822 static sint d_off_x_2[] =
 823 { -2, 2, -1, 0, 1, -2, 2, -2, 2, -1, 0, 1, 0 };
 824
 825
 826 static sint d_off_y_3[] =
 827 { -1, -1, -2, -2, -3, -3, -3, 0, 0, 1, 1, 2, 2,
 828   3, 3, 3, 0 };
 829
 830 static sint d_off_x_3[] =
 831 { -3, 3, -2, 2, -1, 0, 1, -3, 3, -3, 3, -2, 2,
 832   -1, 0, 1, 0 };
 833
 834
 835 static sint d_off_y_4[] =
 836 { -1, -1, -2, -2, -3, -3, -3, -3, -4, -4, -4, 0,
 837   0, 1, 1, 2, 2, 3, 3, 3, 3, 4, 4, 4, 0 };
 838
 839 static sint d_off_x_4[] =
 840 { -4, 4, -3, 3, -2, -3, 2, 3, -1, 0, 1, -4, 4,
 841   -4, 4, -3, 3, -2, -3, 2, 3, -1, 0, 1, 0 };
 842
 843
 844 static sint d_off_y_5[] =
 845 { -1, -1, -2, -2, -3, -3, -4, -4, -4, -4, -5, -5,
 846   -5, 0, 0, 1, 1, 2, 2, 3, 3, 4, 4, 4, 4, 5, 5,
 847   5, 0 };
 848
 849 static sint d_off_x_5[] =
 850 { -5, 5, -4, 4, -4, 4, -2, -3, 2, 3, -1, 0, 1,
 851   -5, 5, -5, 5, -4, 4, -4, 4, -2, -3, 2, 3, -1,
 852   0, 1, 0 };
 853
 854
 855 static sint d_off_y_6[] =
 856 { -1, -1, -2, -2, -3, -3, -4, -4, -5, -5, -5, -5,
 857   -6, -6, -6, 0, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5,
 858   5, 5, 6, 6, 6, 0 };
 859
 860 static sint d_off_x_6[] =
 861 { -6, 6, -5, 5, -5, 5, -4, 4, -2, -3, 2, 3, -1,
 862   0, 1, -6, 6, -6, 6, -5, 5, -5, 5, -4, 4, -2,
 863   -3, 2, 3, -1, 0, 1, 0 };
 864
 865
 866 static sint d_off_y_7[] =
 867 { -1, -1, -2, -2, -3, -3, -4, -4, -5, -5, -5, -5,
 868   -6, -6, -6, -6, -7, -7, -7, 0, 0, 1, 1, 2, 2, 3,
 869   3, 4, 4, 5, 5, 5, 5, 6, 6, 6, 6, 7, 7, 7, 0 };
 870
 871 static sint d_off_x_7[] =
 872 { -7, 7, -6, 6, -6, 6, -5, 5, -4, -5, 4, 5, -2,
 873   -3, 2, 3, -1, 0, 1, -7, 7, -7, 7, -6, 6, -6,
 874   6, -5, 5, -4, -5, 4, 5, -2, -3, 2, 3, -1, 0,
 875   1, 0 };
 876
 877
 878 static sint d_off_y_8[] =
 879 { -1, -1, -2, -2, -3, -3, -4, -4, -5, -5, -6, -6,
 880   -6, -6, -7, -7, -7, -7, -8, -8, -8, 0, 0, 1, 1,
 881   2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 6, 6, 7, 7, 7, 7,
 882   8, 8, 8, 0 };
 883
 884 static sint d_off_x_8[] =
 885 { -8, 8, -7, 7, -7, 7, -6, 6, -6, 6, -4, -5, 4,
 886   5, -2, -3, 2, 3, -1, 0, 1, -8, 8, -8, 8, -7,
 887   7, -7, 7, -6, 6, -6, 6, -4, -5, 4, 5, -2, -3,
 888   2, 3, -1, 0, 1, 0 };
 889
 890
 891 static sint d_off_y_9[] =
 892 { -1, -1, -2, -2, -3, -3, -4, -4, -5, -5, -6, -6,
 893   -7, -7, -7, -7, -8, -8, -8, -8, -9, -9, -9, 0,
 894   0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 7,
 895   7, 8, 8, 8, 8, 9, 9, 9, 0 };
 896
 897 static sint d_off_x_9[] =
 898 { -9, 9, -8, 8, -8, 8, -7, 7, -7, 7, -6, 6, -4,
 899   -5, 4, 5, -2, -3, 2, 3, -1, 0, 1, -9, 9, -9,
 900   9, -8, 8, -8, 8, -7, 7, -7, 7, -6, 6, -4, -5,
 901   4, 5, -2, -3, 2, 3, -1, 0, 1, 0 };
 902
 903
 904 static sint *dist_offsets_y[10] =
 905 {
 906         d_off_y_0, d_off_y_1, d_off_y_2, d_off_y_3, d_off_y_4,
 907         d_off_y_5, d_off_y_6, d_off_y_7, d_off_y_8, d_off_y_9
 908 };
 909
 910 static sint *dist_offsets_x[10] =
 911 {
 912         d_off_x_0, d_off_x_1, d_off_x_2, d_off_x_3, d_off_x_4,
 913         d_off_x_5, d_off_x_6, d_off_x_7, d_off_x_8, d_off_x_9
 914 };
 915
 916 /*
 917 * Choose a "safe" location near a monster for it to run toward.
 918 *
 919 * A location is "safe" if it can be reached quickly and the player
 920 * is not able to fire into it (it isn't a "clean shot").  So, this will
 921 * cause monsters to "duck" behind walls.  Hopefully, monsters will also
 922 * try to run towards corridor openings if they are in a room.
 923 *
 924 * This function may take lots of CPU time if lots of monsters are
 925 * fleeing.
 926 *
 927 * Return TRUE if a safe location is available.
 928 */
 929 static bool find_safety(int m_idx, int *yp, int *xp)
 930 {
 931         monster_type *m_ptr = &m_list[m_idx];
 932
 933         int fy = m_ptr->fy;
 934         int fx = m_ptr->fx;
 935
 936         int y, x, dy, dx, d, dis, i;
 937         int gy = 0, gx = 0, gdis = 0;
 938
 939         sint *y_offsets;
 940         sint *x_offsets;
 941
 942         cave_type *c_ptr;
 943
 944         /* Start with adjacent locations, spread further */
 945         for (d = 1; d < 10; d++)
 946         {
 947                 /* Get the lists of points with a distance d from (fx, fy) */
 948                 y_offsets = dist_offsets_y[d];
 949                 x_offsets = dist_offsets_x[d];
 950
 951                 /* Check the locations */
 952                 for (i = 0, dx = x_offsets[0], dy = y_offsets[0];
 953                      dx != 0 || dy != 0;
 954                      i++, dx = x_offsets[i], dy = y_offsets[i])
 955                 {
 956                         y = fy + dy;
 957                         x = fx + dx;
 958
 959                         /* Skip illegal locations */
 960                         if (!in_bounds(y, x)) continue;
 961
 962                         c_ptr = &cave[y][x];
 963
 964                         /* Skip locations in a wall */
 965                         if (!cave_floor_grid(c_ptr)) continue;
 966
 967                         /* Check for "availability" (if monsters can flow) */
 968                         if (!(m_ptr->mflag2 & MFLAG_NOFLOW))
 969                         {
 970                                 /* Ignore grids very far from the player */
 971                                 if (c_ptr->dist == 0) continue;
 972
 973                                 /* Ignore too-distant grids */
 974                                 if (c_ptr->dist > cave[fy][fx].dist + 2 * d) continue;
 975                         }
 976
 977                         /* Check for absence of shot (more or less) */
 978                         if (!player_has_los_grid(c_ptr))
 979                         {
 980
 981                                 /* Calculate distance from player */
 982                                 dis = distance(y, x, py, px);
 983
 984                                 /* Remember if further than previous */
 985                                 if (dis > gdis)
 986                                 {
 987                                         gy = y;
 988                                         gx = x;
 989                                         gdis = dis;
 990                                 }
 991                         }
 992                 }
 993
 994                 /* Check for success */
 995                 if (gdis > 0)
 996                 {
 997                         /* Good location */
 998                         (*yp) = fy - gy;
 999                         (*xp) = fx - gx;
1000
1001                         /* Found safe place */
1002                         return (TRUE);
1003                 }
1004         }
1005
1006         /* No safe place */
1007         return (FALSE);
1008 }
1009
1010
1011 /*
1012  * Choose a good hiding place near a monster for it to run toward.
1013  *
1014  * Pack monsters will use this to "ambush" the player and lure him out
1015  * of corridors into open space so they can swarm him.
1016  *
1017  * Return TRUE if a good location is available.
1018  */
1019 static bool find_hiding(int m_idx, int *yp, int *xp)
1020 {
1021         monster_type *m_ptr = &m_list[m_idx];
1022
1023         int fy = m_ptr->fy;
1024         int fx = m_ptr->fx;
1025
1026         int y, x, dy, dx, d, dis, i;
1027         int gy = 0, gx = 0, gdis = 999;
1028
1029         sint *y_offsets, *x_offsets;
1030
1031         cave_type *c_ptr;
1032
1033         /* Start with adjacent locations, spread further */
1034         for (d = 1; d < 10; d++)
1035         {
1036                 /* Get the lists of points with a distance d from (fx, fy) */
1037                 y_offsets = dist_offsets_y[d];
1038                 x_offsets = dist_offsets_x[d];
1039
1040                 /* Check the locations */
1041                 for (i = 0, dx = x_offsets[0], dy = y_offsets[0];
1042                      dx != 0 || dy != 0;
1043                      i++, dx = x_offsets[i], dy = y_offsets[i])
1044                 {
1045                         y = fy + dy;
1046                         x = fx + dx;
1047
1048                         /* Skip illegal locations */
1049                         if (!in_bounds(y, x)) continue;
1050
1051                         c_ptr = &cave[y][x];
1052
1053                         /* Skip occupied locations */
1054                         if (!cave_empty_grid(c_ptr)) continue;
1055
1056                         /* Check for hidden, available grid */
1057                         if (!player_has_los_grid(c_ptr) && clean_shot(fy, fx, y, x, FALSE))
1058                         {
1059                                 /* Calculate distance from player */
1060                                 dis = distance(y, x, py, px);
1061
1062                                 /* Remember if closer than previous */
1063                                 if (dis < gdis && dis >= 2)
1064                                 {
1065                                         gy = y;
1066                                         gx = x;
1067                                         gdis = dis;
1068                                 }
1069                         }
1070                 }
1071
1072                 /* Check for success */
1073                 if (gdis < 999)
1074                 {
1075                         /* Good location */
1076                         (*yp) = fy - gy;
1077                         (*xp) = fx - gx;
1078
1079                         /* Found good place */
1080                         return (TRUE);
1081                 }
1082         }
1083
1084         /* No good place */
1085         return (FALSE);
1086 }
1087
1088
1089 /*
1090  * Choose "logical" directions for monster movement
1091  */
1092 static bool get_moves(int m_idx, int *mm)
1093 {
1094         monster_type *m_ptr = &m_list[m_idx];
1095         monster_race *r_ptr = &r_info[m_ptr->r_idx];
1096         int          y, ay, x, ax;
1097         int          move_val = 0;
1098         int          y2 = py;
1099         int          x2 = px;
1100         bool         done = FALSE;
1101         bool         will_run = mon_will_run(m_idx);
1102         cave_type       *c_ptr;
1103         bool         no_flow = ((m_ptr->mflag2 & MFLAG_NOFLOW) && (cave[m_ptr->fy][m_ptr->fx].cost > 2));
1104         bool         can_pass_wall;
1105
1106         /* Flow towards the player */
1107         (void)get_moves_aux(m_idx, &y2, &x2, no_flow);
1108
1109         can_pass_wall = ((r_ptr->flags2 & RF2_PASS_WALL) && ((m_idx != p_ptr->riding) || (p_ptr->pass_wall)));
1110
1111         /* Extract the "pseudo-direction" */
1112         y = m_ptr->fy - y2;
1113         x = m_ptr->fx - x2;
1114
1115         if (!will_run && is_hostile(m_ptr) &&
1116             (r_ptr->flags1 & RF1_FRIENDS) &&
1117             (los(m_ptr->fy, m_ptr->fx, py, px) ||
1118             (cave[m_ptr->fy][m_ptr->fx].dist < MAX_SIGHT / 2)))
1119         {
1120         /*
1121          * Animal packs try to get the player out of corridors
1122          * (...unless they can move through walls -- TY)
1123          */
1124                 if ((r_ptr->flags3 & RF3_ANIMAL) && !can_pass_wall &&
1125                          !(r_ptr->flags2 & RF2_KILL_WALL))
1126                 {
1127                         int i, room = 0;
1128
1129                         /* Count room grids next to player */
1130                         for (i = 0; i < 8; i++)
1131                         {
1132                                 int x = px + ddx_ddd[i];
1133                                 int y = py + ddy_ddd[i];
1134
1135                                 cave_type *c_ptr;
1136
1137                                 if (!in_bounds2(y, x)) continue;
1138
1139                                 c_ptr = &cave[y][x];
1140
1141                                 /* Check grid */
1142                                 if (((cave_floor_grid(c_ptr)) || ((c_ptr->feat & 0x60) == 0x60)) &&
1143                                          monster_can_cross_terrain(c_ptr->feat, r_ptr))
1144                                 {
1145                                         /* One more room grid */
1146                                         room++;
1147                                 }
1148                         }
1149                         if (cave[py][px].info & CAVE_ROOM) room -= 2;
1150                         if (!r_ptr->flags4 && !r_ptr->flags5 && !r_ptr->flags6) room -= 2;
1151
1152                         /* Not in a room and strong player */
1153                         if (room < (8 * (p_ptr->chp + p_ptr->csp)) /
1154                             (p_ptr->mhp + p_ptr->msp))
1155                         {
1156                                 /* Find hiding place */
1157                                 if (find_hiding(m_idx, &y, &x)) done = TRUE;
1158                         }
1159                 }
1160
1161                 /* Monster groups try to surround the player */
1162                 if (!done && (cave[m_ptr->fy][m_ptr->fx].dist < 3))
1163                 {
1164                         int i;
1165
1166                         /* Find an empty square near the player to fill */
1167                         for (i = 0; i < 8; i++)
1168                         {
1169                                 /* Pick squares near player (semi-randomly) */
1170                                 y2 = py + ddy_ddd[(m_idx + i) & 7];
1171                                 x2 = px + ddx_ddd[(m_idx + i) & 7];
1172
1173                                 /* Already there? */
1174                                 if ((m_ptr->fy == y2) && (m_ptr->fx == x2))
1175                                 {
1176                                         /* Attack the player */
1177                                         y2 = py;
1178                                         x2 = px;
1179
1180                                         break;
1181                                 }
1182
1183                                 if (!in_bounds2(y2, x2)) continue;
1184
1185                                 /* Ignore filled grids */
1186                                 c_ptr = &cave[y2][x2];
1187                                 if (!cave_empty_grid(c_ptr)) continue;
1188
1189                                 /* Try to fill this hole */
1190                                 break;
1191                         }
1192
1193                         /* Extract the new "pseudo-direction" */
1194                         y = m_ptr->fy - y2;
1195                         x = m_ptr->fx - x2;
1196
1197                         /* Done */
1198                         done = TRUE;
1199                 }
1200         }
1201
1202         /* Apply fear if possible and necessary */
1203         if (is_pet(m_ptr) && will_run)
1204         {
1205                 /* XXX XXX Not very "smart" */
1206                 y = (-y), x = (-x);
1207         }
1208         else
1209         {
1210                 if (!done && will_run)
1211                 {
1212                         int tmp_x = (-x);
1213                         int tmp_y = (-y);
1214
1215                         /* Try to find safe place */
1216                         if (find_safety(m_idx, &y, &x))
1217                         {
1218                                 /* Attempt to avoid the player */
1219                                 if (!no_flow)
1220                                 {
1221                                         /* Adjust movement */
1222                                         if (get_fear_moves_aux(m_idx, &y, &x)) done = TRUE;
1223                                 }
1224                         }
1225
1226                         if (!done)
1227                         {
1228                                 /* This is not a very "smart" method XXX XXX */
1229                                 y = tmp_y;
1230                                 x = tmp_x;
1231                         }
1232                 }
1233         }
1234
1235
1236         /* Check for no move */
1237         if (!x && !y) return (FALSE);
1238
1239
1240         /* Extract the "absolute distances" */
1241         ax = ABS(x);
1242         ay = ABS(y);
1243
1244         /* Do something weird */
1245         if (y < 0) move_val += 8;
1246         if (x > 0) move_val += 4;
1247
1248         /* Prevent the diamond maneuvre */
1249         if (ay > (ax << 1))
1250         {
1251                 move_val++;
1252                 move_val++;
1253         }
1254         else if (ax > (ay << 1))
1255         {
1256                 move_val++;
1257         }
1258
1259         /* Extract some directions */
1260         switch (move_val)
1261         {
1262         case 0:
1263                 mm[0] = 9;
1264                 if (ay > ax)
1265                 {
1266                         mm[1] = 8;
1267                         mm[2] = 6;
1268                         mm[3] = 7;
1269                         mm[4] = 3;
1270                 }
1271                 else
1272                 {
1273                         mm[1] = 6;
1274                         mm[2] = 8;
1275                         mm[3] = 3;
1276                         mm[4] = 7;
1277                 }
1278                 break;
1279         case 1:
1280         case 9:
1281                 mm[0] = 6;
1282                 if (y < 0)
1283                 {
1284                         mm[1] = 3;
1285                         mm[2] = 9;
1286                         mm[3] = 2;
1287                         mm[4] = 8;
1288                 }
1289                 else
1290                 {
1291                         mm[1] = 9;
1292                         mm[2] = 3;
1293                         mm[3] = 8;
1294                         mm[4] = 2;
1295                 }
1296                 break;
1297         case 2:
1298         case 6:
1299                 mm[0] = 8;
1300                 if (x < 0)
1301                 {
1302                         mm[1] = 9;
1303                         mm[2] = 7;
1304                         mm[3] = 6;
1305                         mm[4] = 4;
1306                 }
1307                 else
1308                 {
1309                         mm[1] = 7;
1310                         mm[2] = 9;
1311                         mm[3] = 4;
1312                         mm[4] = 6;
1313                 }
1314                 break;
1315         case 4:
1316                 mm[0] = 7;
1317                 if (ay > ax)
1318                 {
1319                         mm[1] = 8;
1320                         mm[2] = 4;
1321                         mm[3] = 9;
1322                         mm[4] = 1;
1323                 }
1324                 else
1325                 {
1326                         mm[1] = 4;
1327                         mm[2] = 8;
1328                         mm[3] = 1;
1329                         mm[4] = 9;
1330                 }
1331                 break;
1332         case 5:
1333         case 13:
1334                 mm[0] = 4;
1335                 if (y < 0)
1336                 {
1337                         mm[1] = 1;
1338                         mm[2] = 7;
1339                         mm[3] = 2;
1340                         mm[4] = 8;
1341                 }
1342                 else
1343                 {
1344                         mm[1] = 7;
1345                         mm[2] = 1;
1346                         mm[3] = 8;
1347                         mm[4] = 2;
1348                 }
1349                 break;
1350         case 8:
1351                 mm[0] = 3;
1352                 if (ay > ax)
1353                 {
1354                         mm[1] = 2;
1355                         mm[2] = 6;
1356                         mm[3] = 1;
1357                         mm[4] = 9;
1358                 }
1359                 else
1360                 {
1361                         mm[1] = 6;
1362                         mm[2] = 2;
1363                         mm[3] = 9;
1364                         mm[4] = 1;
1365                 }
1366                 break;
1367         case 10:
1368         case 14:
1369                 mm[0] = 2;
1370                 if (x < 0)
1371                 {
1372                         mm[1] = 3;
1373                         mm[2] = 1;
1374                         mm[3] = 6;
1375                         mm[4] = 4;
1376                 }
1377                 else
1378                 {
1379                         mm[1] = 1;
1380                         mm[2] = 3;
1381                         mm[3] = 4;
1382                         mm[4] = 6;
1383                 }
1384                 break;
1385         case 12:
1386                 mm[0] = 1;
1387                 if (ay > ax)
1388                 {
1389                         mm[1] = 2;
1390                         mm[2] = 4;
1391                         mm[3] = 3;
1392                         mm[4] = 7;
1393                 }
1394                 else
1395                 {
1396                         mm[1] = 4;
1397                         mm[2] = 2;
1398                         mm[3] = 7;
1399                         mm[4] = 3;
1400                 }
1401                 break;
1402         }
1403
1404         /* Wants to move... */
1405         return (TRUE);
1406 }
1407
1408
1409 static int check_hit2(int power, int level, int ac, int stun)
1410 {
1411         int i, k;
1412
1413         /* Percentile dice */
1414         k = randint0(100);
1415
1416         if (stun && one_in_(2)) return FALSE;
1417
1418         /* Hack -- Always miss or hit */
1419         if (k < 10) return (k < 5);
1420
1421         /* Calculate the "attack quality" */
1422         i = (power + (level * 3));
1423
1424         /* Power and Level compete against Armor */
1425         if ((i > 0) && (randint1(i) > ((ac * 3) / 4))) return (TRUE);
1426
1427         /* Assume miss */
1428         return (FALSE);
1429 }
1430
1431
1432 /* Monster attacks monster */
1433 static bool monst_attack_monst(int m_idx, int t_idx)
1434 {
1435         monster_type    *m_ptr = &m_list[m_idx];
1436         monster_type    *t_ptr = &m_list[t_idx];
1437
1438         monster_race    *r_ptr = &r_info[m_ptr->r_idx];
1439         monster_race    *tr_ptr = &r_info[t_ptr->r_idx];
1440
1441         int             ap_cnt;
1442         int             ac, rlev, pt;
1443         char            m_name[80], t_name[80];
1444         char            temp[80];
1445         bool            blinked, heal_effect;
1446         bool            explode = FALSE, touched = FALSE, fear = FALSE;
1447         int             y_saver = t_ptr->fy;
1448         int             x_saver = t_ptr->fx;
1449
1450         bool see_m = m_ptr->ml;
1451         bool see_t = t_ptr->ml;
1452         bool see_either = see_m || see_t;
1453
1454         /* Can the player be aware of this attack? */
1455         bool known = (m_ptr->cdis <= MAX_SIGHT) || (t_ptr->cdis <= MAX_SIGHT);
1456         bool do_silly_attack = (one_in_(2) && p_ptr->image);
1457
1458         /* Cannot attack self */
1459         if (m_idx == t_idx) return FALSE;
1460
1461         /* Not allowed to attack */
1462         if (r_ptr->flags1 & RF1_NEVER_BLOW) return FALSE;
1463
1464         if (d_info[dungeon_type].flags1 & DF1_NO_MELEE) return (FALSE);
1465
1466         /* Wake it up */
1467         t_ptr->csleep = 0;
1468
1469         /* Total armor */
1470         ac = tr_ptr->ac;
1471
1472         /* Extract the effective monster level */
1473         rlev = ((r_ptr->level >= 1) ? r_ptr->level : 1);
1474
1475         /* Get the monster name (or "it") */
1476         monster_desc(m_name, m_ptr, 0);
1477
1478         /* Get the monster name (or "it") */
1479         monster_desc(t_name, t_ptr, 0);
1480
1481         /* Assume no blink */
1482         blinked = FALSE;
1483
1484         if (!see_either && known)
1485         {
1486                 mon_fight = TRUE;
1487         }
1488
1489         if (p_ptr->riding && (m_idx == p_ptr->riding)) disturb(1, 0);
1490
1491         /* Scan through all four blows */
1492         for (ap_cnt = 0; ap_cnt < 4; ap_cnt++)
1493         {
1494                 bool obvious = FALSE;
1495
1496                 int power = 0;
1497                 int damage = 0;
1498
1499                 cptr act = NULL;
1500
1501                 /* Extract the attack infomation */
1502                 int effect = r_ptr->blow[ap_cnt].effect;
1503                 int method = r_ptr->blow[ap_cnt].method;
1504                 int d_dice = r_ptr->blow[ap_cnt].d_dice;
1505                 int d_side = r_ptr->blow[ap_cnt].d_side;
1506
1507                 if (!m_ptr->r_idx) break;
1508
1509                 /* Stop attacking if the target dies! */
1510                 if (t_ptr->fx != x_saver || t_ptr->fy != y_saver)
1511                         break;
1512
1513                 /* Hack -- no more attacks */
1514                 if (!method) break;
1515
1516                 if (blinked) /* Stop! */
1517                 {
1518                         /* break; */
1519                 }
1520
1521                 if (method == RBM_SHOOT) continue;
1522
1523                 /* Extract the attack "power" */
1524                 switch (effect)
1525                 {
1526                 case RBE_HURT:          power = 60; break;
1527                 case RBE_POISON:        power =  5; break;
1528                 case RBE_UN_BONUS:      power = 20; break;
1529                 case RBE_UN_POWER:      power = 15; break;
1530                 case RBE_EAT_GOLD:      power =  5; break;
1531                 case RBE_EAT_ITEM:      power =  5; break;
1532                 case RBE_EAT_FOOD:      power =  5; break;
1533                 case RBE_EAT_LITE:      power =  5; break;
1534                 case RBE_ACID:          power =  0; break;
1535                 case RBE_ELEC:          power = 10; break;
1536                 case RBE_FIRE:          power = 10; break;
1537                 case RBE_COLD:          power = 10; break;
1538                 case RBE_BLIND:         power =  2; break;
1539                 case RBE_CONFUSE:       power = 10; break;
1540                 case RBE_TERRIFY:       power = 10; break;
1541                 case RBE_PARALYZE:      power =  2; break;
1542                 case RBE_LOSE_STR:      power =  0; break;
1543                 case RBE_LOSE_DEX:      power =  0; break;
1544                 case RBE_LOSE_CON:      power =  0; break;
1545                 case RBE_LOSE_INT:      power =  0; break;
1546                 case RBE_LOSE_WIS:      power =  0; break;
1547                 case RBE_LOSE_CHR:      power =  0; break;
1548                 case RBE_LOSE_ALL:      power =  2; break;
1549                 case RBE_SHATTER:       power = 60; break;
1550                 case RBE_EXP_10:        power =  5; break;
1551                 case RBE_EXP_20:        power =  5; break;
1552                 case RBE_EXP_40:        power =  5; break;
1553                 case RBE_EXP_80:        power =  5; break;
1554                 case RBE_DISEASE:       power =  5; break;
1555                 case RBE_TIME:          power =  5; break;
1556                 case RBE_EXP_VAMP:      power =  5; break;
1557                 case RBE_DR_MANA:       power =  5; break;
1558                 case RBE_SUPERHURT:     power = 60; break;
1559                 }
1560
1561
1562                 /* Monster hits */
1563                 if (!effect || check_hit2(power, rlev, ac, m_ptr->stunned))
1564                 {
1565                         /* Describe the attack method */
1566                         switch (method)
1567                         {
1568                         case RBM_HIT:
1569                                 {
1570 #ifdef JP
1571 act = "%s¤ò²¥¤Ã¤¿¡£";
1572 #else
1573                                         act = "hits %s.";
1574 #endif
1575
1576                                         touched = TRUE;
1577                                         break;
1578                                 }
1579
1580                         case RBM_TOUCH:
1581                                 {
1582 #ifdef JP
1583 act = "%s¤ò¿¨¤Ã¤¿¡£";
1584 #else
1585                                         act = "touches %s.";
1586 #endif
1587
1588                                         touched = TRUE;
1589                                         break;
1590                                 }
1591
1592                         case RBM_PUNCH:
1593                                 {
1594 #ifdef JP
1595 act = "%s¤ò¥Ñ¥ó¥Á¤·¤¿¡£";
1596 #else
1597                                         act = "punches %s.";
1598 #endif
1599
1600                                         touched = TRUE;
1601                                         break;
1602                                 }
1603
1604                         case RBM_KICK:
1605                                 {
1606 #ifdef JP
1607 act = "%s¤ò½³¤Ã¤¿¡£";
1608 #else
1609                                         act = "kicks %s.";
1610 #endif
1611
1612                                         touched = TRUE;
1613                                         break;
1614                                 }
1615
1616                         case RBM_CLAW:
1617                                 {
1618 #ifdef JP
1619 act = "%s¤ò¤Ò¤Ã¤«¤¤¤¿¡£";
1620 #else
1621                                         act = "claws %s.";
1622 #endif
1623
1624                                         touched = TRUE;
1625                                         break;
1626                                 }
1627
1628                         case RBM_BITE:
1629                                 {
1630 #ifdef JP
1631 act = "%s¤ò³ú¤ó¤À¡£";
1632 #else
1633                                         act = "bites %s.";
1634 #endif
1635
1636                                         touched = TRUE;
1637                                         break;
1638                                 }
1639
1640                         case RBM_STING:
1641                                 {
1642 #ifdef JP
1643 act = "%s¤ò»É¤·¤¿¡£";
1644 #else
1645                                         act = "stings %s.";
1646 #endif
1647
1648                                         touched = TRUE;
1649                                         break;
1650                                 }
1651
1652                         case RBM_SLASH:
1653                                 {
1654 #ifdef JP
1655 act = "%s¤ò»Â¤Ã¤¿¡£";
1656 #else
1657                                         act = "slashes %s.";
1658 #endif
1659
1660                                         break;
1661                                 }
1662
1663                         case RBM_BUTT:
1664                                 {
1665 #ifdef JP
1666 act = "%s¤ò³Ñ¤ÇÆÍ¤¤¤¿¡£";
1667 #else
1668                                         act = "butts %s.";
1669 #endif
1670
1671                                         touched = TRUE;
1672                                         break;
1673                                 }
1674
1675                         case RBM_CRUSH:
1676                                 {
1677 #ifdef JP
1678 act = "%s¤ËÂÎÅö¤ê¤·¤¿¡£";
1679 #else
1680                                         act = "crushes %s.";
1681 #endif
1682
1683                                         touched = TRUE;
1684                                         break;
1685                                 }
1686
1687                         case RBM_ENGULF:
1688                                 {
1689 #ifdef JP
1690 act = "%s¤ò°û¤ß¹þ¤ó¤À¡£";
1691 #else
1692                                         act = "engulfs %s.";
1693 #endif
1694
1695                                         touched = TRUE;
1696                                         break;
1697                                 }
1698
1699                         case RBM_CHARGE:
1700                                 {
1701 #ifdef JP
1702 act = "%s¤ËÀÁµá½ñ¤ò¤è¤³¤·¤¿¡£";
1703 #else
1704                                         act = "charges %s.";
1705 #endif
1706
1707                                         touched = TRUE;
1708                                         break;
1709                                 }
1710
1711                         case RBM_CRAWL:
1712                                 {
1713 #ifdef JP
1714 act = "%s¤ÎÂÎ¤Î¾å¤òÇç¤¤²ó¤Ã¤¿¡£";
1715 #else
1716                                         act = "crawls on %s.";
1717 #endif
1718
1719                                         touched = TRUE;
1720                                         break;
1721                                 }
1722
1723                         case RBM_DROOL:
1724                                 {
1725 #ifdef JP
1726 act = "%s¤Ë¤è¤À¤ì¤ò¤¿¤é¤·¤¿¡£";
1727 #else
1728                                         act = "drools on %s.";
1729 #endif
1730
1731                                         touched = FALSE;
1732                                         break;
1733                                 }
1734
1735                         case RBM_SPIT:
1736                                 {
1737 #ifdef JP
1738 act = "%s¤ËÂÃ¤òÅÇ¤¤¤¿¡£";
1739 #else
1740                                         act = "spits on %s.";
1741 #endif
1742
1743                                         touched = FALSE;
1744                                         break;
1745                                 }
1746
1747                         case RBM_EXPLODE:
1748                                 {
1749                                         if (see_either) disturb(1, 0);
1750 #ifdef JP
1751 act = "ÇúÈ¯¤·¤¿¡£";
1752 #else
1753                                         act = "explodes.";
1754 #endif
1755
1756                                         explode = TRUE;
1757                                         touched = FALSE;
1758                                         break;
1759                                 }
1760
1761                         case RBM_GAZE:
1762                                 {
1763 #ifdef JP
1764 act = "%s¤ò¤Ë¤é¤ó¤À¡£";
1765 #else
1766                                         act = "gazes at %s.";
1767 #endif
1768
1769                                         touched = FALSE;
1770                                         break;
1771                                 }
1772
1773                         case RBM_WAIL:
1774                                 {
1775 #ifdef JP
1776 act = "%s¤Ëµã¤¤Ä¤¤¤¿¡£";
1777 #else
1778                                         act = "wails at %s.";
1779 #endif
1780
1781                                         touched = FALSE;
1782                                         break;
1783                                 }
1784
1785                         case RBM_SPORE:
1786                                 {
1787 #ifdef JP
1788 act = "%s¤ËË¦»Ò¤òÈô¤Ð¤·¤¿¡£";
1789 #else
1790                                         act = "releases spores at %s.";
1791 #endif
1792
1793                                         touched = FALSE;
1794                                         break;
1795                                 }
1796
1797                         case RBM_XXX4:
1798                                 {
1799 #ifdef JP
1800 act = "%s¤ËXXX4¤òÈô¤Ð¤·¤¿¡£";
1801 #else
1802                                         act = "projects XXX4's at %s.";
1803 #endif
1804
1805                                         touched = FALSE;
1806                                         break;
1807                                 }
1808
1809                         case RBM_BEG:
1810                                 {
1811 #ifdef JP
1812 act = "%s¤Ë¶â¤ò¤»¤¬¤ó¤À¡£";
1813 #else
1814                                         act = "begs %s for money.";
1815 #endif
1816
1817                                         touched = FALSE;
1818                                         break;
1819                                 }
1820
1821                         case RBM_INSULT:
1822                                 {
1823 #ifdef JP
1824 act = "%s¤òÉî¿«¤·¤¿¡£";
1825 #else
1826                                         act = "insults %s.";
1827 #endif
1828
1829                                         touched = FALSE;
1830                                         break;
1831                                 }
1832
1833                         case RBM_MOAN:
1834                                 {
1835 #ifdef JP
1836 act = "%s¤Ë¤à¤«¤Ã¤Æ¤¦¤á¤¤¤¿¡£";
1837 #else
1838                                         act = "moans at %s.";
1839 #endif
1840
1841                                         touched = FALSE;
1842                                         break;
1843                                 }
1844
1845                         case RBM_SHOW:
1846                                 {
1847 #ifdef JP
1848 act = "%s¤Ë¤à¤«¤Ã¤Æ²Î¤Ã¤¿¡£";
1849 #else
1850                                         act = "sings to %s.";
1851 #endif
1852
1853                                         touched = FALSE;
1854                                         break;
1855                                 }
1856                         }
1857
1858                         /* Message */
1859                         if (act && see_either)
1860                         {
1861                                 if (do_silly_attack)
1862                                 {
1863                                         act = silly_attacks[randint0(MAX_SILLY_ATTACK)];
1864                                 }
1865                                 strfmt(temp, act, t_name);
1866 #ifdef JP
1867                                 msg_format("%^s¤Ï%s", m_name, temp);
1868 #else
1869                                 msg_format("%^s %s", m_name, temp);
1870 #endif
1871
1872                         }
1873
1874                         /* Hack -- assume all attacks are obvious */
1875                         obvious = TRUE;
1876
1877                         /* Roll out the damage */
1878                         damage = damroll(d_dice, d_side);
1879
1880                         /* Assume no healing effect */
1881                         heal_effect = FALSE;
1882
1883                         pt = GF_MISSILE;
1884
1885                         /* Apply appropriate damage */
1886                         switch (effect)
1887                         {
1888                         case 0:
1889                                 {
1890                                         damage = 0;
1891                                         pt = 0;
1892                                         break;
1893                                 }
1894
1895                         case RBE_SUPERHURT:
1896                                 {
1897                                         if ((randint1(rlev*2+250) > (ac+200)) || one_in_(13)) {
1898                                                 int tmp_damage = damage-(damage*((ac < 150) ? ac : 150)/250);
1899                                                 damage = MAX(damage, tmp_damage*2);
1900                                                 break;
1901                                         }
1902                                 }
1903                         case RBE_HURT:
1904                                 {
1905                                         damage -= (damage * ((ac < 150) ? ac : 150) / 250);
1906                                         break;
1907                                 }
1908
1909                         case RBE_POISON:
1910                         case RBE_DISEASE:
1911                                 {
1912                                         pt = GF_POIS;
1913                                         break;
1914                                 }
1915
1916                         case RBE_UN_BONUS:
1917                         case RBE_UN_POWER:
1918                                 {
1919                                         pt = GF_DISENCHANT;
1920                                         break;
1921                                 }
1922
1923                         case RBE_EAT_FOOD:
1924                         case RBE_EAT_LITE:
1925                         case RBE_DR_MANA:
1926                                 {
1927                                         pt = damage = 0;
1928                                         break;
1929                                 }
1930
1931                         case RBE_EAT_ITEM:
1932                         case RBE_EAT_GOLD:
1933                                 {
1934                                         pt = damage = 0;
1935                                         if (one_in_(2)) blinked = TRUE;
1936                                         break;
1937                                 }
1938
1939                         case RBE_ACID:
1940                                 {
1941                                         pt = GF_ACID;
1942                                         break;
1943                                 }
1944
1945                         case RBE_ELEC:
1946                                 {
1947                                         pt = GF_ELEC;
1948                                         break;
1949                                 }
1950
1951                         case RBE_FIRE:
1952                                 {
1953                                         pt = GF_FIRE;
1954                                         break;
1955                                 }
1956
1957                         case RBE_COLD:
1958                                 {
1959                                         pt = GF_COLD;
1960                                         break;
1961                                 }
1962
1963                         case RBE_BLIND:
1964                                 {
1965                                         break;
1966                                 }
1967
1968                         case RBE_CONFUSE:
1969                                 {
1970                                         pt = GF_CONFUSION;
1971                                         break;
1972                                 }
1973
1974                         case RBE_TERRIFY:
1975                                 {
1976                                         pt = GF_TURN_ALL;
1977                                         break;
1978                                 }
1979
1980                         case RBE_PARALYZE:
1981                                 {
1982                                         pt = GF_OLD_SLEEP; /* sort of close... */
1983                                         break;
1984                                 }
1985
1986                         case RBE_LOSE_STR:
1987                         case RBE_LOSE_INT:
1988                         case RBE_LOSE_WIS:
1989                         case RBE_LOSE_DEX:
1990                         case RBE_LOSE_CON:
1991                         case RBE_LOSE_CHR:
1992                         case RBE_LOSE_ALL:
1993                                 {
1994                                         break;
1995                                 }
1996                         case RBE_SHATTER:
1997                                 {
1998                                         if (damage > 23)
1999                                         {
2000                                                 earthquake(m_ptr->fy, m_ptr->fx, 8);
2001                                         }
2002                                         break;
2003                                 }
2004                         case RBE_EXP_10:
2005                         case RBE_EXP_20:
2006                         case RBE_EXP_40:
2007                         case RBE_EXP_80:
2008                                 {
2009                                         pt = GF_NETHER;
2010                                         break;
2011                                 }
2012                         case RBE_TIME:
2013                                 {
2014                                         pt = GF_TIME;
2015                                         break;
2016                                 }
2017                         case RBE_EXP_VAMP:
2018                                 {
2019                                         pt = GF_OLD_DRAIN;
2020                                         heal_effect = TRUE;
2021                                         break;
2022                                 }
2023
2024                         default:
2025                                 {
2026                                         pt = 0;
2027                                         break;
2028                                 }
2029                         }
2030
2031                         if (pt)
2032                         {
2033                                 /* Do damage if not exploding */
2034                                 if (!explode)
2035                                 {
2036                                         project(m_idx, 0, t_ptr->fy, t_ptr->fx,
2037                                                 (pt == GF_OLD_SLEEP ? r_ptr->level : damage), pt, PROJECT_KILL | PROJECT_STOP | PROJECT_MONSTER, -1);
2038                                 }
2039
2040                                 if (heal_effect)
2041                                 {
2042                                         if ((monster_living(tr_ptr)) && (damage > 2))
2043                                         {
2044                                                 bool did_heal = FALSE;
2045
2046                                                 if (m_ptr->hp < m_ptr->maxhp) did_heal = TRUE;
2047
2048                                                 /* Heal */
2049                                                 m_ptr->hp += damroll(4, damage / 6);
2050                                                 if (m_ptr->hp > m_ptr->maxhp) m_ptr->hp = m_ptr->maxhp;
2051
2052                                                 /* Redraw (later) if needed */
2053                                                 if (p_ptr->health_who == m_idx) p_ptr->redraw |= (PR_HEALTH);
2054                                                 if (p_ptr->riding == m_idx) p_ptr->redraw |= (PR_UHEALTH);
2055
2056                                                 /* Special message */
2057                                                 if (see_m && did_heal)
2058                                                 {
2059 #ifdef JP
2060 msg_format("%s¤ÏÂÎÎÏ¤ò²óÉü¤·¤¿¤è¤¦¤À¡£", m_name);
2061 #else
2062                                                         msg_format("%^s appears healthier.", m_name);
2063 #endif
2064
2065                                                 }
2066                                         }
2067                                 }
2068
2069                                 if (touched)
2070                                 {
2071                                         /* Aura fire */
2072                                         if ((tr_ptr->flags2 & RF2_AURA_FIRE) &&
2073                                                 !(r_ptr->flags3 & RF3_IM_FIRE) &&
2074                                                 !(r_ptr->flags3 & RF3_RES_ALL) && m_ptr->r_idx)
2075                                         {
2076                                                 if (see_either)
2077                                                 {
2078                                                         blinked = FALSE;
2079 #ifdef JP
2080 msg_format("%^s¤ÏÆÍÁ³Ç®¤¯¤Ê¤Ã¤¿¡ª", m_name);
2081 #else
2082                                                         msg_format("%^s is suddenly very hot!", m_name);
2083 #endif
2084
2085                                                         if (t_ptr->ml)
2086                                                                 tr_ptr->r_flags2 |= RF2_AURA_FIRE;
2087                                                 }
2088                                                 project(t_idx, 0, m_ptr->fy, m_ptr->fx,
2089                                                         damroll (1 + ((tr_ptr->level) / 26),
2090                                                         1 + ((tr_ptr->level) / 17)),
2091                                                         GF_FIRE, PROJECT_KILL | PROJECT_STOP | PROJECT_MONSTER, -1);
2092                                         }
2093
2094                                         /* Aura cold */
2095                                         if ((tr_ptr->flags3 & RF3_AURA_COLD) &&
2096                                                 !(r_ptr->flags3 & RF3_IM_COLD) &&
2097                                                 !(r_ptr->flags3 & RF3_RES_ALL) && m_ptr->r_idx)
2098                                         {
2099                                                 if (see_either)
2100                                                 {
2101                                                         blinked = FALSE;
2102 #ifdef JP
2103 msg_format("%^s¤ÏÆÍÁ³´¨¤¯¤Ê¤Ã¤¿¡ª", m_name);
2104 #else
2105                                                         msg_format("%^s is suddenly very cold!", m_name);
2106 #endif
2107
2108                                                         if (t_ptr->ml)
2109                                                                 tr_ptr->r_flags3 |= RF3_AURA_COLD;
2110                                                 }
2111                                                 project(t_idx, 0, m_ptr->fy, m_ptr->fx,
2112                                                         damroll (1 + ((tr_ptr->level) / 26),
2113                                                         1 + ((tr_ptr->level) / 17)),
2114                                                         GF_COLD, PROJECT_KILL | PROJECT_STOP | PROJECT_MONSTER, -1);
2115                                         }
2116
2117                                         /* Aura elec */
2118                                         if ((tr_ptr->flags2 & (RF2_AURA_ELEC)) &&
2119                                                 !(r_ptr->flags3 & (RF3_IM_ELEC)) &&
2120                                                 !(r_ptr->flags3 & RF3_RES_ALL) && m_ptr->r_idx)
2121                                         {
2122                                                 if (see_either)
2123                                                 {
2124                                                         blinked = FALSE;
2125 #ifdef JP
2126 msg_format("%^s¤ÏÅÅ·â¤ò¿©¤é¤Ã¤¿¡ª", m_name);
2127 #else
2128                                                         msg_format("%^s gets zapped!", m_name);
2129 #endif
2130
2131                                                         if (t_ptr->ml)
2132                                                                 tr_ptr->r_flags2 |= RF2_AURA_ELEC;
2133                                                 }
2134                                                 project(t_idx, 0, m_ptr->fy, m_ptr->fx,
2135                                                         damroll (1 + ((tr_ptr->level) / 26),
2136                                                         1 + ((tr_ptr->level) / 17)),
2137                                                         GF_ELEC, PROJECT_KILL | PROJECT_STOP | PROJECT_MONSTER, -1);
2138                                         }
2139
2140                                 }
2141                         }
2142                 }
2143
2144                 /* Monster missed player */
2145                 else
2146                 {
2147                         /* Analyze failed attacks */
2148                         switch (method)
2149                         {
2150                         case RBM_HIT:
2151                         case RBM_TOUCH:
2152                         case RBM_PUNCH:
2153                         case RBM_KICK:
2154                         case RBM_CLAW:
2155                         case RBM_BITE:
2156                         case RBM_STING:
2157                         case RBM_SLASH:
2158                         case RBM_BUTT:
2159                         case RBM_CRUSH:
2160                         case RBM_ENGULF:
2161                         case RBM_CHARGE:
2162                                 {
2163                                         /* Visible monsters */
2164                                         if (see_m)
2165                                         {
2166                                                 /* Message */
2167 #ifdef JP
2168 msg_format("%s¤Ï%^s¤Î¹¶·â¤ò¤«¤ï¤·¤¿¡£", t_name,m_name);
2169 #else
2170                                                 msg_format("%^s misses %s.", m_name, t_name);
2171 #endif
2172
2173                                         }
2174
2175                                         break;
2176                                 }
2177                         }
2178                 }
2179
2180
2181                 /* Analyze "visible" monsters only */
2182                 if (see_m && !do_silly_attack)
2183                 {
2184                         /* Count "obvious" attacks (and ones that cause damage) */
2185                         if (obvious || damage || (r_ptr->r_blows[ap_cnt] > 10))
2186                         {
2187                                 /* Count attacks of this type */
2188                                 if (r_ptr->r_blows[ap_cnt] < MAX_UCHAR)
2189                                 {
2190                                         r_ptr->r_blows[ap_cnt]++;
2191                                 }
2192                         }
2193                 }
2194         }
2195
2196         if (explode)
2197         {
2198                 sound(SOUND_EXPLODE);
2199
2200                 /* Cancel Invulnerability */
2201                 if (m_ptr->invulner) m_ptr->invulner = 0;
2202
2203 #ifdef JP
2204 mon_take_hit_mon(FALSE, m_idx, m_ptr->hp + 1, &fear, "¤ÏÇúÈ¯¤·¤ÆÊ´¡¹¤Ë¤Ê¤Ã¤¿¡£", m_idx);
2205 #else
2206                 mon_take_hit_mon(FALSE, m_idx, m_ptr->hp + 1, &fear, " explodes into tiny shreds.", m_idx);
2207 #endif
2208
2209
2210                 blinked = FALSE;
2211         }
2212
2213
2214         /* Blink away */
2215         if (blinked)
2216         {
2217                 if (see_m)
2218                 {
2219 #ifdef JP
2220 msg_print("Å¥ËÀ¤Ï¾Ð¤Ã¤ÆÆ¨¤²¤¿¡ª");
2221 #else
2222                         msg_print("The thief flees laughing!");
2223 #endif
2224
2225                 }
2226                 else if (known)
2227                 {
2228                         mon_fight = TRUE;
2229                 }
2230
2231                 teleport_away(m_idx, MAX_SIGHT * 2 + 5, FALSE);
2232         }
2233
2234         return TRUE;
2235 }
2236
2237
2238 /*
2239  * Hack -- local "player stealth" value (see below)
2240  */
2241 static u32b noise = 0L;
2242
2243
2244 /*
2245  * Process a monster
2246  *
2247  * The monster is known to be within 100 grids of the player
2248  *
2249  * In several cases, we directly update the monster lore
2250  *
2251  * Note that a monster is only allowed to "reproduce" if there
2252  * are a limited number of "reproducing" monsters on the current
2253  * level.  This should prevent the level from being "swamped" by
2254  * reproducing monsters.  It also allows a large mass of mice to
2255  * prevent a louse from multiplying, but this is a small price to
2256  * pay for a simple multiplication method.
2257  *
2258  * XXX Monster fear is slightly odd, in particular, monsters will
2259  * fixate on opening a door even if they cannot open it.  Actually,
2260  * the same thing happens to normal monsters when they hit a door
2261  *
2262  * XXX XXX XXX In addition, monsters which *cannot* open or bash
2263  * down a door will still stand there trying to open it...
2264  *
2265  * XXX Technically, need to check for monster in the way
2266  * combined with that monster being in a wall (or door?)
2267  *
2268  * A "direction" of "5" means "pick a random direction".
2269  */
2270 static void process_monster(int m_idx)
2271 {
2272         monster_type    *m_ptr = &m_list[m_idx];
2273         monster_race    *r_ptr = &r_info[m_ptr->r_idx];
2274
2275         int             i, d, oy, ox, ny, nx;
2276
2277         int             mm[8];
2278
2279         cave_type       *c_ptr;
2280
2281         monster_type    *y_ptr;
2282
2283         bool            do_turn;
2284         bool            do_move;
2285         bool            do_view;
2286
2287         bool            did_open_door;
2288         bool            did_bash_door;
2289         bool            did_take_item;
2290         bool            did_kill_item;
2291         bool            did_move_body;
2292         bool            did_pass_wall;
2293         bool            did_kill_wall;
2294         bool            gets_angry = FALSE;
2295         bool            can_pass_wall;
2296         bool            aware = TRUE;
2297
2298         bool            fear;
2299
2300         if ((m_idx == p_ptr->riding) && !(r_ptr->flags7 & RF7_RIDING))
2301         {
2302                 if (rakuba(0, TRUE))
2303                 {
2304 #ifdef JP
2305                         msg_print("ÃÏÌÌ¤ËÍî¤È¤µ¤ì¤¿¡£");
2306 #else
2307                         char m_name[80];
2308                         monster_desc(m_name, &m_list[p_ptr->riding], 0);
2309                         msg_format("You have fallen from %s.", m_name);
2310 #endif
2311                 }
2312         }
2313
2314         if ((m_ptr->mflag2 & MFLAG_CHAMELEON) && one_in_(13) && !m_ptr->csleep)
2315         {
2316                 choose_new_monster(m_idx, FALSE, 0);
2317                 r_ptr = &r_info[m_ptr->r_idx];
2318         }
2319
2320         /* Players hidden in shadow are almost imperceptable. -LM- */
2321         if (p_ptr->special_defense & NINJA_S_STEALTH)
2322         {
2323                 int tmp = p_ptr->lev*6+(p_ptr->skill_stl+10)*4;
2324                 if (p_ptr->monlite) tmp /= 3;
2325                 if (p_ptr->cursed & TRC_AGGRAVATE) tmp /= 2;
2326                 if (r_ptr->level > (p_ptr->lev*p_ptr->lev/20+10)) tmp /= 3;
2327                 /* Low-level monsters will find it difficult to locate the player. */
2328                 if (randint0(tmp) > (r_ptr->level+20)) aware = FALSE;
2329         }
2330
2331         /* Quantum monsters are odd */
2332         if (r_ptr->flags2 & (RF2_QUANTUM))
2333         {
2334                 /* Sometimes skip move */
2335                 if (!randint0(2)) return;
2336
2337                 /* Sometimes die */
2338                 if (!randint0((m_idx % 100) + 10) && !(r_ptr->flags1 & RF1_QUESTOR))
2339                 {
2340                         bool sad = FALSE;
2341
2342                         if (is_pet(m_ptr) && !(m_ptr->ml))
2343                                 sad = TRUE;
2344
2345                         if (m_ptr->ml)
2346                         {
2347                                 char m_name[80];
2348
2349                                 /* Acquire the monster name */
2350                                 monster_desc(m_name, m_ptr, 0);
2351
2352                                 /* Oops */
2353 #ifdef JP
2354 msg_format("%s¤Ï¾Ã¤¨µî¤Ã¤¿¡ª", m_name);
2355 #else
2356                                 msg_format("%^s disappears!", m_name);
2357 #endif
2358
2359                         }
2360
2361                         /* Generate treasure, etc */
2362                         monster_death(m_idx, FALSE);
2363
2364                         /* Delete the monster */
2365                         delete_monster_idx(m_idx);
2366
2367                         if (sad)
2368                         {
2369 #ifdef JP
2370 msg_print("¾¯¤·¤Î´ÖÈá¤·¤¤µ¤Ê¬¤Ë¤Ê¤Ã¤¿¡£");
2371 #else
2372                                 msg_print("You feel sad for a moment.");
2373 #endif
2374
2375                         }
2376
2377                         return;
2378                 }
2379         }
2380
2381         if (m_ptr->r_idx == MON_SHURYUUDAN)
2382 #ifdef JP
2383                 mon_take_hit_mon(FALSE, m_idx, 1, &fear, "¤ÏÇúÈ¯¤·¤ÆÊ´¡¹¤Ë¤Ê¤Ã¤¿¡£", m_idx);
2384 #else
2385                 mon_take_hit_mon(FALSE, m_idx, 1, &fear, " explodes into tiny shreds.", m_idx);
2386 #endif
2387
2388         if ((is_pet(m_ptr) || is_friendly(m_ptr)) && ((r_ptr->flags1 & RF1_UNIQUE) || (r_ptr->flags7 & RF7_UNIQUE_7)) && !p_ptr->inside_battle)
2389         {
2390                 static int riding_pinch = 0;
2391
2392                 if (m_ptr->hp < m_ptr->maxhp/3)
2393                 {
2394                         bool level_teleport = TRUE;
2395                         char m_name[80];
2396                         monster_desc(m_name, m_ptr, 0);
2397
2398                         if (m_idx == p_ptr->riding && riding_pinch < 2)
2399                         {
2400 #ifdef JP
2401 msg_format("%s¤Ï½ý¤ÎÄË¤µ¤ÎÍ¾¤ê¤¢¤Ê¤¿¤ÎÂ«Çû¤«¤éÆ¨¤ì¤è¤¦¤È¤·¤Æ¤¤¤ë¡£", m_name);
2402 #else
2403                                         msg_format("%^s seems to be in so much pain, and trying to escape from your restriction.", m_name);
2404 #endif
2405                                 riding_pinch++;
2406                                 level_teleport = FALSE;
2407                                 disturb(1, 0);
2408                         }
2409                         else if (m_ptr->ml)
2410                         {
2411                                 if (m_idx == p_ptr->riding)
2412                                 {
2413 #ifdef JP
2414 msg_format("%s¤Ï¤¢¤Ê¤¿¤ÎÂ«Çû¤«¤éÃ¦½Ð¤·¤¿¡£", m_name);
2415 #else
2416                                         msg_format("%^s succeeded to escape from your restriction!", m_name);
2417 #endif
2418                                 }
2419                                 if ((r_ptr->flags2 & RF2_CAN_SPEAK) && (m_ptr->r_idx != MON_GRIP) && (m_ptr->r_idx != MON_WOLF) && (m_ptr->r_idx != MON_FANG))
2420                                 {
2421 #ifdef JP
2422 msg_format("%^s¡Ö¥Ô¥ó¥Á¤À¡ªÂàµÑ¤µ¤»¤Æ¤â¤é¤¦¡ª¡×", m_name);
2423 #else
2424                                         msg_format("%^s says 'It is the pinch! I will retreat'.", m_name);
2425 #endif
2426                                 }
2427 #ifdef JP
2428 msg_format("%^s¤¬¥Æ¥ì¥Ý¡¼¥È¡¦¥ì¥Ù¥ë¤Î´¬Êª¤òÆÉ¤ó¤À¡£", m_name);
2429 #else
2430                                 msg_format("%^s read a scroll of teleport level.", m_name);
2431 #endif
2432 #ifdef JP
2433 msg_format("%^s¤¬¾Ã¤¨µî¤Ã¤¿¡£", m_name);
2434 #else
2435                                 msg_format("%^s disappears.", m_name);
2436 #endif
2437                         }
2438
2439                         if (level_teleport)
2440                         {
2441                                 delete_monster_idx(m_idx);
2442
2443                                 if (m_idx == p_ptr->riding)
2444                                 {
2445                                         if (rakuba(-1, FALSE))
2446                                         {
2447 #ifdef JP
2448 msg_print("ÃÏÌÌ¤ËÍî¤È¤µ¤ì¤¿¡£");
2449 #else
2450                                                 msg_print("You have fallen from riding pet.");
2451 #endif
2452                                         }
2453                                 }
2454                                 return;
2455                         }
2456                 }
2457                 else
2458                         if (m_idx == p_ptr->riding) riding_pinch = 0;
2459
2460         }
2461
2462         /* Handle Invulnerability */
2463         if (m_ptr->invulner)
2464         {
2465                 /* Reduce by one, note if expires */
2466                 m_ptr->invulner--;
2467
2468                 if (!(m_ptr->invulner) && m_ptr->ml)
2469                 {
2470                         char m_name[80];
2471
2472                         /* Acquire the monster name */
2473                         monster_desc(m_name, m_ptr, 0);
2474
2475                         /* Dump a message */
2476 #ifdef JP
2477 msg_format("%^s¤Ï¤â¤¦ÌµÅ¨¤Ç¤Ê¤¤¡£", m_name);
2478 #else
2479                         msg_format("%^s is no longer invulnerable.", m_name);
2480 #endif
2481
2482                         m_ptr->energy_need += ENERGY_NEED();
2483                         if (p_ptr->health_who == m_idx) p_ptr->redraw |= (PR_HEALTH);
2484                         if (p_ptr->riding == m_idx) p_ptr->redraw |= (PR_UHEALTH);
2485                 }
2486         }
2487
2488         /* Handle fast */
2489         if (m_ptr->fast)
2490         {
2491                 /* Reduce by one, note if expires */
2492                 m_ptr->fast--;
2493
2494                 if (!(m_ptr->fast) && m_ptr->ml)
2495                 {
2496                         char m_name[80];
2497
2498                         /* Acquire the monster name */
2499                         monster_desc(m_name, m_ptr, 0);
2500
2501                         /* Dump a message */
2502 #ifdef JP
2503 msg_format("%^s¤Ï¤â¤¦²ÃÂ®¤µ¤ì¤Æ¤¤¤Ê¤¤¡£", m_name);
2504 #else
2505                         msg_format("%^s is no longer fast.", m_name);
2506 #endif
2507
2508                         if (p_ptr->health_who == m_idx) p_ptr->redraw |= (PR_HEALTH);
2509                         if (p_ptr->riding == m_idx) p_ptr->redraw |= (PR_UHEALTH);
2510                 }
2511         }
2512
2513         /* Handle slow */
2514         if (m_ptr->slow)
2515         {
2516                 /* Reduce by one, note if expires */
2517                 m_ptr->slow--;
2518
2519                 if (!(m_ptr->slow) && m_ptr->ml)
2520                 {
2521                         char m_name[80];
2522
2523                         /* Acquire the monster name */
2524                         monster_desc(m_name, m_ptr, 0);
2525
2526                         /* Dump a message */
2527 #ifdef JP
2528 msg_format("%^s¤Ï¤â¤¦¸ºÂ®¤µ¤ì¤Æ¤¤¤Ê¤¤¡£", m_name);
2529 #else
2530                         msg_format("%^s is no longer slow.", m_name);
2531 #endif
2532
2533                         if (p_ptr->health_who == m_idx) p_ptr->redraw |= (PR_HEALTH);
2534                         if (p_ptr->riding == m_idx) p_ptr->redraw |= (PR_UHEALTH);
2535                 }
2536         }
2537
2538         /* Handle "sleep" */
2539         if (m_ptr->csleep)
2540         {
2541                 u32b notice = 0;
2542
2543                 /* Hack -- handle non-aggravation */
2544                 if (!(p_ptr->cursed & TRC_AGGRAVATE)) notice = randint0(1024);
2545
2546                 /* Nightmare monsters are more alert */
2547                 if (ironman_nightmare) notice /= 2;
2548
2549                 /* Hack -- See if monster "notices" player */
2550                 if ((notice * notice * notice) <= noise)
2551                 {
2552                         /* Hack -- amount of "waking" */
2553                         int d = 1;
2554
2555                         /* Wake up faster near the player */
2556                         if (m_ptr->cdis < 50) d = (100 / m_ptr->cdis);
2557
2558                         /* Hack -- handle aggravation */
2559                         if (p_ptr->cursed & TRC_AGGRAVATE) d = m_ptr->csleep;
2560
2561                         /* Still asleep */
2562                         if (m_ptr->csleep > d)
2563                         {
2564                                 /* Monster wakes up "a little bit" */
2565                                 m_ptr->csleep -= d;
2566
2567                                 /* Notice the "not waking up" */
2568                                 if (m_ptr->ml)
2569                                 {
2570                                         /* Hack -- Count the ignores */
2571                                         if (r_ptr->r_ignore < MAX_UCHAR)
2572                                         {
2573                                                 r_ptr->r_ignore++;
2574                                         }
2575                                 }
2576                         }
2577
2578                         /* Just woke up */
2579                         else
2580                         {
2581                                 /* Reset sleep counter */
2582                                 m_ptr->csleep = 0;
2583
2584                                 /* Notice the "waking up" */
2585                                 if (m_ptr->ml)
2586                                 {
2587                                         char m_name[80];
2588
2589                                         /* Acquire the monster name */
2590                                         monster_desc(m_name, m_ptr, 0);
2591
2592                                         /* Dump a message */
2593 #ifdef JP
2594 msg_format("%^s¤¬ÌÜ¤ò³Ð¤Þ¤·¤¿¡£", m_name);
2595 #else
2596                                         msg_format("%^s wakes up.", m_name);
2597 #endif
2598
2599
2600                                         /* Redraw the health bar */
2601                                         if (p_ptr->health_who == m_idx) p_ptr->redraw |= (PR_HEALTH);
2602                                         if (p_ptr->riding == m_idx) p_ptr->redraw |= (PR_UHEALTH);
2603
2604                                         if (r_ptr->flags7 & (RF7_HAS_LITE_1 | RF7_HAS_LITE_2))
2605                                                 p_ptr->update |= (PU_MON_LITE);
2606
2607                                         /* Hack -- Count the wakings */
2608                                         if (r_ptr->r_wake < MAX_UCHAR)
2609                                         {
2610                                                 r_ptr->r_wake++;
2611                                         }
2612                                 }
2613                         }
2614                 }
2615
2616                 /* Still sleeping */
2617                 if (m_ptr->csleep) return;
2618         }
2619
2620
2621         /* Handle "stun" */
2622         if (m_ptr->stunned)
2623         {
2624                 int d = 1;
2625
2626                 /* Make a "saving throw" against stun */
2627                 if (randint0(10000) <= r_ptr->level * r_ptr->level)
2628                 {
2629                         /* Recover fully */
2630                         d = m_ptr->stunned;
2631                 }
2632
2633                 /* Hack -- Recover from stun */
2634                 if (m_ptr->stunned > d)
2635                 {
2636                         /* Recover somewhat */
2637                         m_ptr->stunned -= d;
2638                 }
2639
2640                 /* Fully recover */
2641                 else
2642                 {
2643                         /* Recover fully */
2644                         m_ptr->stunned = 0;
2645
2646                         /* Message if visible */
2647                         if (m_ptr->ml)
2648                         {
2649                                 char m_name[80];
2650
2651                                 /* Acquire the monster name */
2652                                 monster_desc(m_name, m_ptr, 0);
2653
2654                                 /* Dump a message */
2655 #ifdef JP
2656 msg_format("%^s¤ÏÛ¯Û°¾õÂÖ¤«¤éÎ©¤ÁÄ¾¤Ã¤¿¡£", m_name);
2657 #else
2658                                 msg_format("%^s is no longer stunned.", m_name);
2659 #endif
2660
2661                                 if (p_ptr->health_who == m_idx) p_ptr->redraw |= (PR_HEALTH);
2662                                 if (p_ptr->riding == m_idx) p_ptr->redraw |= (PR_UHEALTH);
2663                         }
2664                 }
2665
2666                 /* Still stunned */
2667                 if (m_ptr->stunned && one_in_(2)) return;
2668         }
2669
2670
2671         /* Handle confusion */
2672         if (m_ptr->confused)
2673         {
2674                 /* Amount of "boldness" */
2675                 int d = randint1(r_ptr->level / 20 + 1);
2676
2677                 /* Still confused */
2678                 if (m_ptr->confused > d)
2679                 {
2680                         /* Reduce the confusion */
2681                         m_ptr->confused -= d;
2682                 }
2683
2684                 /* Recovered */
2685                 else
2686                 {
2687                         /* No longer confused */
2688                         m_ptr->confused = 0;
2689
2690                         /* Message if visible */
2691                         if (m_ptr->ml)
2692                         {
2693                                 char m_name[80];
2694
2695                                 /* Acquire the monster name */
2696                                 monster_desc(m_name, m_ptr, 0);
2697
2698                                 /* Dump a message */
2699 #ifdef JP
2700 msg_format("%^s¤Ïº®Íð¤«¤éÎ©¤ÁÄ¾¤Ã¤¿¡£", m_name);
2701 #else
2702                                 msg_format("%^s is no longer confused.", m_name);
2703 #endif
2704
2705                                 if (p_ptr->health_who == m_idx) p_ptr->redraw |= (PR_HEALTH);
2706                                 if (p_ptr->riding == m_idx) p_ptr->redraw |= (PR_UHEALTH);
2707                         }
2708                 }
2709         }
2710
2711         if (p_ptr->riding == m_idx)
2712         {
2713                 p_ptr->update |= (PU_BONUS);
2714         }
2715
2716         /* No one wants to be your friend if you're aggravating */
2717         if (is_friendly(m_ptr) && (p_ptr->cursed & TRC_AGGRAVATE))
2718                 gets_angry = TRUE;
2719
2720         /* Paranoia... no pet uniques outside wizard mode -- TY */
2721         if (is_pet(m_ptr) &&
2722             ((((r_ptr->flags1 & RF1_UNIQUE) || (r_ptr->flags7 & RF7_UNIQUE_7)) &&
2723               ((p_ptr->align > 9 && (r_ptr->flags3 & RF3_EVIL)) ||
2724               (p_ptr->align < -9 && (r_ptr->flags3 & RF3_GOOD))))
2725              || (r_ptr->flags3 & RF3_RES_ALL)))
2726         {
2727                         gets_angry = TRUE;
2728         }
2729
2730         if (p_ptr->inside_battle) gets_angry = FALSE;
2731
2732         if (gets_angry)
2733         {
2734                 char m_name[80];
2735                 monster_desc(m_name, m_ptr, 0);
2736 #ifdef JP
2737 msg_format("%^s¤ÏÆÍÁ³Å¨¤Ë¤Þ¤ï¤Ã¤¿¡ª", m_name);
2738 #else
2739                 msg_format("%^s suddenly becomes hostile!", m_name);
2740 #endif
2741
2742                 set_hostile(m_ptr);
2743         }
2744
2745         /* Handle "fear" */
2746         if (m_ptr->monfear)
2747         {
2748                 /* Amount of "boldness" */
2749                 int d = randint1(r_ptr->level / 20 + 1);
2750
2751                 /* Still afraid */
2752                 if (m_ptr->monfear > d)
2753                 {
2754                         /* Reduce the fear */
2755                         m_ptr->monfear -= d;
2756                 }
2757
2758                 /* Recover from fear, take note if seen */
2759                 else
2760                 {
2761                         /* No longer afraid */
2762                         m_ptr->monfear = 0;
2763
2764                         /* Visual note */
2765                         if (m_ptr->ml)
2766                         {
2767                                 char m_name[80];
2768                                 char m_poss[80];
2769
2770                                 /* Acquire the monster name/poss */
2771                                 monster_desc(m_name, m_ptr, 0);
2772                                 monster_desc(m_poss, m_ptr, 0x22);
2773
2774                                 /* Dump a message */
2775 #ifdef JP
2776 msg_format("%^s¤ÏÍ¦µ¤¤ò¼è¤êÌá¤·¤¿¡£", m_name);
2777 #else
2778                                 msg_format("%^s recovers %s courage.", m_name, m_poss);
2779 #endif
2780
2781                                 if (p_ptr->health_who == m_idx) p_ptr->redraw |= (PR_HEALTH);
2782                         }
2783                 }
2784         }
2785
2786         /* Get the origin */
2787         oy = m_ptr->fy;
2788         ox = m_ptr->fx;
2789
2790
2791         /* Attempt to "multiply" if able and allowed */
2792         if ((r_ptr->flags2 & RF2_MULTIPLY) && (num_repro < MAX_REPRO))
2793         {
2794                 int k, y, x;
2795
2796                 /* Count the adjacent monsters */
2797                 for (k = 0, y = oy - 1; y <= oy + 1; y++)
2798                 {
2799                         for (x = ox - 1; x <= ox + 1; x++)
2800                         {
2801                                 /* Ignore locations off of edge */
2802                                 if (!in_bounds2(y, x)) continue;
2803
2804                                 if (cave[y][x].m_idx) k++;
2805                         }
2806                 }
2807
2808                 /* Hack -- multiply slower in crowded areas */
2809                 if ((k < 4) && (!k || !randint0(k * MON_MULT_ADJ)))
2810                 {
2811                         /* Try to multiply */
2812                         if (multiply_monster(m_idx, FALSE, (is_pet(m_ptr) ? PM_FORCE_PET : 0)))
2813                         {
2814                                 /* Take note if visible */
2815                                 if (m_ptr->ml)
2816                                 {
2817                                         r_ptr->r_flags2 |= (RF2_MULTIPLY);
2818                                 }
2819
2820                                 /* Multiplying takes energy */
2821                                 return;
2822                         }
2823                 }
2824         }
2825
2826
2827         if (!p_ptr->inside_battle)
2828         {
2829                 /* Hack! "Cyber" monster makes noise... */
2830                 if (m_ptr->ap_r_idx == MON_CYBER &&
2831                     one_in_(CYBERNOISE) &&
2832                     !m_ptr->ml && (m_ptr->cdis <= MAX_SIGHT))
2833                 {
2834                         if (disturb_minor) disturb(FALSE, FALSE);
2835 #ifdef JP
2836 msg_print("½Å¸ü¤ÊÂ²»¤¬Ê¹¤³¤¨¤¿¡£");
2837 #else
2838                         msg_print("You hear heavy steps.");
2839 #endif
2840
2841                 }
2842
2843                 /* Some monsters can speak */
2844                 if ((r_info[m_ptr->ap_r_idx].flags2 & RF2_CAN_SPEAK) && aware &&
2845                         one_in_(SPEAK_CHANCE) &&
2846                         player_has_los_bold(oy, ox))
2847                 {
2848                         char m_name[80];
2849                         char monmessage[1024];
2850                         cptr filename;
2851
2852                         /* Acquire the monster name/poss */
2853                         if (m_ptr->ml)
2854                                 monster_desc(m_name, m_ptr, 0);
2855                         else
2856 #ifdef JP
2857 strcpy(m_name, "¤½¤ì");
2858 #else
2859                                 strcpy(m_name, "It");
2860 #endif
2861
2862
2863                         /* Select the file for monster quotes */
2864                         if (m_ptr->monfear)
2865 #ifdef JP
2866 filename = "monfear_j.txt";
2867 #else
2868                                 filename = "monfear.txt";
2869 #endif
2870
2871                         else if (is_pet(m_ptr))
2872 #ifdef JP
2873 filename = "monpet_j.txt";
2874 #else
2875                                 filename = "monpet.txt";
2876 #endif
2877
2878                         else if (is_friendly(m_ptr))
2879 #ifdef JP
2880 filename = "monfrien_j.txt";
2881 #else
2882                                 filename = "monfrien.txt";
2883 #endif
2884
2885                         else
2886 #ifdef JP
2887                                 filename = "monspeak_j.txt";
2888 #else
2889                                 filename = "monspeak.txt";
2890 #endif
2891
2892
2893                         /* Get the monster line */
2894                         if (get_rnd_line(filename, m_ptr->ap_r_idx, monmessage) == 0)
2895                         {
2896                                 /* Say something */
2897 #ifdef JP
2898 msg_format("%^s%s", m_name, monmessage);
2899 #else
2900                                 msg_format("%^s %s", m_name, monmessage);
2901 #endif
2902
2903                         }
2904                 }
2905         }
2906
2907         /* Attempt to cast a spell */
2908         if (aware && make_attack_spell(m_idx)) return;
2909
2910         /*
2911          * Attempt to cast a spell at an enemy other than the player
2912          * (may slow the game a smidgeon, but I haven't noticed.)
2913          */
2914         if (monst_spell_monst(m_idx)) return;
2915
2916         can_pass_wall = ((r_ptr->flags2 & RF2_PASS_WALL) && ((m_idx != p_ptr->riding) || (p_ptr->pass_wall)));
2917
2918         /* Hack -- Assume no movement */
2919         mm[0] = mm[1] = mm[2] = mm[3] = 0;
2920         mm[4] = mm[5] = mm[6] = mm[7] = 0;
2921
2922
2923         /* Confused -- 100% random */
2924         if (m_ptr->confused || !aware)
2925         {
2926                 /* Try four "random" directions */
2927                 mm[0] = mm[1] = mm[2] = mm[3] = 5;
2928         }
2929
2930         /* 75% random movement */
2931         else if ((r_ptr->flags1 & RF1_RAND_50) &&
2932                                 (r_ptr->flags1 & RF1_RAND_25) &&
2933                  (randint0(100) < 75))
2934         {
2935                 /* Memorize flags */
2936                 if (m_ptr->ml) r_ptr->r_flags1 |= (RF1_RAND_50);
2937                 if (m_ptr->ml) r_ptr->r_flags1 |= (RF1_RAND_25);
2938
2939                 /* Try four "random" directions */
2940                 mm[0] = mm[1] = mm[2] = mm[3] = 5;
2941         }
2942
2943         /* 50% random movement */
2944         else if ((r_ptr->flags1 & RF1_RAND_50) &&
2945                                 (randint0(100) < 50))
2946         {
2947                 /* Memorize flags */
2948                 if (m_ptr->ml) r_ptr->r_flags1 |= (RF1_RAND_50);
2949
2950                 /* Try four "random" directions */
2951                 mm[0] = mm[1] = mm[2] = mm[3] = 5;
2952         }
2953
2954         /* 25% random movement */
2955         else if ((r_ptr->flags1 & RF1_RAND_25) &&
2956                                 (randint0(100) < 25))
2957         {
2958                 /* Memorize flags */
2959                 if (m_ptr->ml) r_ptr->r_flags1 |= RF1_RAND_25;
2960
2961                 /* Try four "random" directions */
2962                 mm[0] = mm[1] = mm[2] = mm[3] = 5;
2963         }
2964
2965         /* Can't reach player - find something else to hit */
2966         else if ((r_ptr->flags1 & RF1_NEVER_MOVE) && (m_ptr->cdis > 1))
2967         {
2968                 /* Try four "random" directions */
2969                 mm[0] = mm[1] = mm[2] = mm[3] = 5;
2970
2971                 /* Look for an enemy */
2972 #if 0  /* Hack - Too slow.  Mimic pits are horrible with this on. */
2973                 get_enemy_dir(m_idx, mm);
2974 #endif /* 0 */
2975         }
2976
2977         /* Pets will follow the player */
2978         else if (is_pet(m_ptr))
2979         {
2980                 /* Are we trying to avoid the player? */
2981                 bool avoid = ((p_ptr->pet_follow_distance < 0) &&
2982                                                   (m_ptr->cdis <= (0 - p_ptr->pet_follow_distance)));
2983
2984                 /* Do we want to find the player? */
2985                 bool lonely = (!avoid && (m_ptr->cdis > p_ptr->pet_follow_distance));
2986
2987                 /* Should we find the player if we can't find a monster? */
2988                 bool distant = (m_ptr->cdis > PET_SEEK_DIST);
2989
2990                 /* by default, move randomly */
2991                 mm[0] = mm[1] = mm[2] = mm[3] = 5;
2992
2993                 /* Look for an enemy */
2994                 if (!get_enemy_dir(m_idx, mm))
2995                 {
2996                         /* Find the player if necessary */
2997                         if (avoid || lonely || distant)
2998                         {
2999                                 /* Remember the leash length */
3000                                 int dis = p_ptr->pet_follow_distance;
3001
3002                                 /* Hack -- adjust follow distance temporarily */
3003                                 if (p_ptr->pet_follow_distance > PET_SEEK_DIST)
3004                                 {
3005                                         p_ptr->pet_follow_distance = PET_SEEK_DIST;
3006                                 }
3007
3008                                 /* Find the player */
3009                                 get_moves(m_idx, mm);
3010
3011                                 /* Restore the leash */
3012                                 p_ptr->pet_follow_distance = dis;
3013                         }
3014                 }
3015         }
3016
3017         /* Friendly monster movement */
3018         else if (!is_hostile(m_ptr))
3019         {
3020                 /* by default, move randomly */
3021                 mm[0] = mm[1] = mm[2] = mm[3] = 5;
3022
3023                 /* Look for an enemy */
3024                 get_enemy_dir(m_idx, mm);
3025         }
3026         /* Normal movement */
3027         else
3028         {
3029                 /* Logical moves, may do nothing */
3030                 if (!get_moves(m_idx, mm)) return;
3031         }
3032
3033         /* Assume nothing */
3034         do_turn = FALSE;
3035         do_move = FALSE;
3036         do_view = FALSE;
3037
3038         /* Assume nothing */
3039         did_open_door = FALSE;
3040         did_bash_door = FALSE;
3041         did_take_item = FALSE;
3042         did_kill_item = FALSE;
3043         did_move_body = FALSE;
3044         did_pass_wall = FALSE;
3045         did_kill_wall = FALSE;
3046
3047
3048         /* Take a zero-terminated array of "directions" */
3049         for (i = 0; mm[i]; i++)
3050         {
3051                 /* Get the direction */
3052                 d = mm[i];
3053
3054                 /* Hack -- allow "randomized" motion */
3055                 if (d == 5) d = ddd[randint0(8)];
3056
3057                 /* Get the destination */
3058                 ny = oy + ddy[d];
3059                 nx = ox + ddx[d];
3060
3061                 /* Ignore locations off of edge */
3062                 if (!in_bounds2(ny, nx)) continue;
3063
3064                 /* Access that cave grid */
3065                 c_ptr = &cave[ny][nx];
3066
3067                 /* Access that cave grid's contents */
3068                 y_ptr = &m_list[c_ptr->m_idx];
3069
3070                 /* Floor is open? */
3071                 if (cave_floor_grid(c_ptr))
3072                 {
3073                         /* Go ahead and move */
3074                         do_move = TRUE;
3075                 }
3076
3077                 /* Hack -- player 'in' wall */
3078                 else if ((ny == py) && (nx == px))
3079                 {
3080                         do_move = TRUE;
3081                 }
3082
3083                 else if (c_ptr->m_idx)
3084                 {
3085                         /* Possibly a monster to attack */
3086                         do_move = TRUE;
3087                 }
3088
3089                 /* Permanent wall */
3090                 else if ((c_ptr->feat >= FEAT_PERM_EXTRA) &&
3091                         (c_ptr->feat <= FEAT_PERM_SOLID))
3092                 {
3093                         do_move = FALSE;
3094                 }
3095
3096                 /* Hack -- semi-transparent terrains are no obstacle */
3097                 else if (c_ptr->feat == FEAT_TREES)
3098                 {
3099                         do_move = TRUE;
3100                 }
3101
3102                 /* Hack -- semi-transparent terrains are no obstacle */
3103                 else if ((c_ptr->feat == FEAT_MOUNTAIN) && ((r_ptr->flags2 & RF2_KILL_WALL) || (!dun_level && ((r_ptr->flags7 & RF7_CAN_FLY) || (r_ptr->flags8 & RF8_WILD_MOUNTAIN)))))
3104                 {
3105                         do_move = TRUE;
3106                 }
3107
3108
3109                 /* Monster moves through walls (and doors) */
3110                 else if (can_pass_wall)
3111                 {
3112                         /* Pass through walls/doors/rubble */
3113                         do_move = TRUE;
3114
3115                         /* Monster went through a wall */
3116                         did_pass_wall = TRUE;
3117                 }
3118
3119                 /* Monster destroys walls (and doors) */
3120                 else if ((r_ptr->flags2 & RF2_KILL_WALL) && (m_idx != p_ptr->riding))
3121                 {
3122                         /* Eat through walls/doors/rubble */
3123                         do_move = TRUE;
3124
3125                         /* Monster destroyed a wall */
3126                         did_kill_wall = TRUE;
3127
3128                         if (one_in_(GRINDNOISE))
3129                         {
3130 #ifdef JP
3131 msg_print("¥®¥·¥®¥·¤¤¤¦²»¤¬Ê¹¤³¤¨¤ë¡£");
3132 #else
3133                                 msg_print("There is a grinding sound.");
3134 #endif
3135
3136                         }
3137
3138                         /* Forget the wall */
3139                         c_ptr->info &= ~(CAVE_MARK);
3140
3141                         /* Notice */
3142                         cave_set_feat(ny, nx, floor_type[randint0(100)]);
3143
3144                         /* Note changes to viewable region */
3145                         if (player_has_los_bold(ny, nx)) do_view = TRUE;
3146                 }
3147
3148                 /* Handle doors and secret doors */
3149                 else if (is_closed_door(c_ptr->feat))
3150                 {
3151                         bool may_bash = TRUE;
3152
3153                         /* Assume no move allowed */
3154                         do_move = FALSE;
3155
3156                         /* Creature can open doors. */
3157                         if ((r_ptr->flags2 & RF2_OPEN_DOOR) &&
3158                                  (!is_pet(m_ptr) || (p_ptr->pet_extra_flags & PF_OPEN_DOORS)))
3159                         {
3160                                 /* Closed doors */
3161                                 if (c_ptr->feat == FEAT_DOOR_HEAD)
3162                                 {
3163                                         /* The door is open */
3164                                         did_open_door = TRUE;
3165
3166                                         /* Do not bash the door */
3167                                         may_bash = FALSE;
3168
3169                                         /* Assume no move allowed */
3170                                         do_move = TRUE;
3171                                 }
3172
3173                                 /* Locked doors (not jammed) */
3174                                 else if (c_ptr->feat < FEAT_DOOR_HEAD + 0x08)
3175                                 {
3176                                         int k;
3177
3178                                         /* Door power */
3179                                         k = ((c_ptr->feat - FEAT_DOOR_HEAD) & 0x07);
3180
3181                                         /* Try to unlock it XXX XXX XXX */
3182                                         if (randint0(m_ptr->hp / 10) > k)
3183                                         {
3184                                                 /* Unlock the door */
3185                                                 cave_set_feat(ny, nx, FEAT_DOOR_HEAD + 0x00);
3186
3187                                                 /* Do not bash the door */
3188                                                 may_bash = FALSE;
3189                                         }
3190                                 }
3191                         }
3192
3193                         /* Stuck doors -- attempt to bash them down if allowed */
3194                         if (may_bash && (r_ptr->flags2 & RF2_BASH_DOOR) &&
3195                                 (!is_pet(m_ptr) || (p_ptr->pet_extra_flags & PF_OPEN_DOORS)))
3196                         {
3197                                 int k;
3198
3199                                 /* Door power */
3200                                 k = ((c_ptr->feat - FEAT_DOOR_HEAD) & 0x07);
3201
3202                                 /* Attempt to Bash XXX XXX XXX */
3203                                 if (randint0(m_ptr->hp / 10) > k)
3204                                 {
3205                                         /* Message */
3206 #ifdef JP
3207 msg_print("¥É¥¢¤òÃ¡¤³«¤±¤ë²»¤¬¤·¤¿¡ª");
3208 #else
3209                                         msg_print("You hear a door burst open!");
3210 #endif
3211
3212
3213                                         /* Disturb (sometimes) */
3214                                         if (disturb_minor) disturb(0, 0);
3215
3216                                         /* The door was bashed open */
3217                                         did_bash_door = TRUE;
3218
3219                                         /* Hack -- fall into doorway */
3220                                         do_move = TRUE;
3221                                 }
3222                         }
3223
3224
3225                         /* Deal with doors in the way */
3226                         if (did_open_door || did_bash_door)
3227                         {
3228                                 /* Break down the door */
3229                                 if (did_bash_door && (randint0(100) < 50))
3230                                 {
3231                                         cave_set_feat(ny, nx, FEAT_BROKEN);
3232                                 }
3233
3234                                 /* Open the door */
3235                                 else
3236                                 {
3237                                         cave_set_feat(ny, nx, FEAT_OPEN);
3238                                 }
3239
3240                                 /* Handle viewable doors */
3241                                 if (player_has_los_bold(ny, nx)) do_view = TRUE;
3242                         }
3243                 }
3244
3245                 /* Hack -- check for Glyph of Warding */
3246                 if (do_move && is_glyph_grid(c_ptr) &&
3247                     !((r_ptr->flags1 & RF1_NEVER_BLOW) && (py == ny) && (px == nx)))
3248                 {
3249                         /* Assume no move allowed */
3250                         do_move = FALSE;
3251
3252                         /* Break the ward */
3253                         if (!is_pet(m_ptr) && (randint1(BREAK_GLYPH) < r_ptr->level))
3254                         {
3255                                 /* Describe observable breakage */
3256                                 if (c_ptr->info & CAVE_MARK)
3257                                 {
3258 #ifdef JP
3259 msg_print("¼é¤ê¤Î¥ë¡¼¥ó¤¬²õ¤ì¤¿¡ª");
3260 #else
3261                                         msg_print("The rune of protection is broken!");
3262 #endif
3263
3264                                 }
3265
3266                                 /* Forget the rune */
3267                                 c_ptr->info &= ~(CAVE_MARK);
3268
3269                                 /* Break the rune */
3270                                 c_ptr->info &= ~(CAVE_OBJECT);
3271                                 c_ptr->mimic = 0;
3272
3273                                 /* Allow movement */
3274                                 do_move = TRUE;
3275
3276                                 /* Notice */
3277                                 note_spot(ny, nx);
3278                         }
3279                 }
3280                 else if (do_move && is_explosive_rune_grid(c_ptr) &&
3281                          !((r_ptr->flags1 & RF1_NEVER_BLOW) && (py == ny) && (px == nx)))
3282                 {
3283                         /* Assume no move allowed */
3284                         do_move = FALSE;
3285
3286                         /* Break the ward */
3287                         if (!is_pet(m_ptr))
3288                         {
3289                                 /* Break the ward */
3290                                 if (randint1(BREAK_MINOR_GLYPH) > r_ptr->level)
3291                                 {
3292                                         /* Describe observable breakage */
3293                                         if (c_ptr->info & CAVE_MARK)
3294                                         {
3295 #ifdef JP
3296 msg_print("¥ë¡¼¥ó¤¬ÇúÈ¯¤·¤¿¡ª");
3297 #else
3298                                                 msg_print("The rune explodes!");
3299 #endif
3300
3301                                                 project(0, 2, ny, nx, 2 * (p_ptr->lev + damroll(7, 7)), GF_MANA, (PROJECT_GRID | PROJECT_ITEM | PROJECT_KILL | PROJECT_JUMP | PROJECT_NO_HANGEKI), -1);
3302                                         }
3303                                 }
3304                                 else
3305                                 {
3306 #ifdef JP
3307 msg_print("ÇúÈ¯¤Î¥ë¡¼¥ó¤Ï²ò½ü¤µ¤ì¤¿¡£");
3308 #else
3309                                         msg_print("An explosive rune was disarmed.");
3310 #endif
3311                                 }
3312
3313                                 /* Forget the rune */
3314                                 c_ptr->info &= ~(CAVE_MARK);
3315
3316                                 /* Break the rune */
3317                                 c_ptr->info &= ~(CAVE_OBJECT);
3318                                 c_ptr->mimic = 0;
3319
3320                                 note_spot(ny, nx);
3321                                 lite_spot(ny, nx);
3322
3323                                 if (!m_ptr->r_idx) return;
3324                                 /* Allow movement */
3325                                 do_move = TRUE;
3326                         }
3327                 }
3328                 if (do_move && (ny == py) && (nx == px) && (d_info[dungeon_type].flags1 & DF1_NO_MELEE))
3329                 {
3330                         do_move = FALSE;
3331                 }
3332
3333                 /* Some monsters never attack */
3334                 if (do_move && (ny == py) && (nx == px) &&
3335                         (r_ptr->flags1 & RF1_NEVER_BLOW))
3336                 {
3337                         /* Hack -- memorize lack of attacks */
3338                         if (m_ptr->ml) r_ptr->r_flags1 |= (RF1_NEVER_BLOW);
3339
3340                         /* Do not move */
3341                         do_move = FALSE;
3342                 }
3343
3344                 /* The player is in the way.  Attack him. */
3345                 if (do_move && (ny == py) && (nx == px))
3346                 {
3347                         if (!p_ptr->riding || one_in_(2))
3348                         {
3349                                 /* Do the attack */
3350                                 (void)make_attack_normal(m_idx);
3351
3352                                 /* Do not move */
3353                                 do_move = FALSE;
3354
3355                                 /* Took a turn */
3356                                 do_turn = TRUE;
3357                         }
3358                 }
3359
3360                 if ((c_ptr->feat >= FEAT_PATTERN_START) &&
3361                         (c_ptr->feat <= FEAT_PATTERN_XTRA2) &&
3362                         !do_turn && !(r_ptr->flags7 & RF7_CAN_FLY))
3363                 {
3364                         do_move = FALSE;
3365                 }
3366
3367
3368                 /* A monster is in the way */
3369                 if (do_move && c_ptr->m_idx)
3370                 {
3371                         monster_race *z_ptr = &r_info[y_ptr->r_idx];
3372                         monster_type *m2_ptr = &m_list[c_ptr->m_idx];
3373
3374                         /* Assume no movement */
3375                         do_move = FALSE;
3376
3377                         /* Attack 'enemies' */
3378                         if (((r_ptr->flags2 & (RF2_KILL_BODY)) &&
3379                                   (r_ptr->mexp * r_ptr->level > z_ptr->mexp * z_ptr->level) &&
3380                                   (cave_floor_grid(c_ptr)) &&
3381                              (c_ptr->m_idx != p_ptr->riding)) ||
3382                                  are_enemies(m_ptr, m2_ptr) || m_ptr->confused)
3383                         {
3384                                 do_move = FALSE;
3385
3386                                 if (r_ptr->flags2 & RF2_KILL_BODY) r_ptr->r_flags2 |= (RF2_KILL_BODY);
3387
3388                                 /* attack */
3389                                 if ((m2_ptr->r_idx) && (m2_ptr->hp >= 0))
3390                                 {
3391                                         if (monst_attack_monst(m_idx, cave[ny][nx].m_idx))
3392                                         return;
3393                                 }
3394                         }
3395
3396                         /* Push past weaker monsters (unless leaving a wall) */
3397                         else if ((r_ptr->flags2 & RF2_MOVE_BODY) &&
3398                                 (r_ptr->mexp > z_ptr->mexp) && cave_floor_grid(c_ptr) &&
3399                                 (cave_floor_grid(&cave[m_ptr->fy][m_ptr->fx])) &&
3400                                  (c_ptr->m_idx != p_ptr->riding))
3401                         {
3402                                 /* Allow movement */
3403                                 do_move = TRUE;
3404
3405                                 /* Monster pushed past another monster */
3406                                 did_move_body = TRUE;
3407
3408                                 /* XXX XXX XXX Message */
3409                         }
3410                 }
3411
3412                 /*
3413                  * Check if monster can cross terrain
3414                  * This is checked after the normal attacks
3415                  * to allow monsters to attack an enemy,
3416                  * even if it can't enter the terrain.
3417                  */
3418                 if (do_move && !monster_can_cross_terrain(c_ptr->feat, r_ptr))
3419                 {
3420                         /* Assume no move allowed */
3421                         do_move = FALSE;
3422                 }
3423
3424                 /* Some monsters never move */
3425                 if (do_move && (r_ptr->flags1 & RF1_NEVER_MOVE))
3426                 {
3427                         /* Hack -- memorize lack of attacks */
3428                         if (m_ptr->ml) r_ptr->r_flags1 |= (RF1_NEVER_MOVE);
3429
3430                         /* Do not move */
3431                         do_move = FALSE;
3432                 }
3433
3434                 if (m_idx == p_ptr->riding)
3435                 {
3436                         if (!p_ptr->riding_ryoute && !(m_list[p_ptr->riding].monfear)) do_move = FALSE;
3437                 }
3438
3439                 /* Creature has been allowed move */
3440                 if (do_move)
3441                 {
3442                         s16b this_o_idx, next_o_idx;
3443
3444                         /* Take a turn */
3445                         do_turn = TRUE;
3446
3447                         /* Hack -- Update the old location */
3448                         cave[oy][ox].m_idx = c_ptr->m_idx;
3449
3450                         if (cave[ny][nx].feat == FEAT_TREES)
3451                         {
3452                                 if (r_ptr->flags2 & RF2_KILL_WALL)
3453                                 {
3454                                         cave_set_feat(ny, nx, FEAT_GRASS);
3455
3456                                 }
3457                                 if (!(r_ptr->flags7 & RF7_CAN_FLY) && !(r_ptr->flags8 & RF8_WILD_WOOD))
3458                                 {
3459                                         m_ptr->energy_need += ENERGY_NEED();
3460                                 }
3461                         }
3462
3463                         /* Mega-Hack -- move the old monster, if any */
3464                         if (c_ptr->m_idx)
3465                         {
3466                                 /* Move the old monster */
3467                                 y_ptr->fy = oy;
3468                                 y_ptr->fx = ox;
3469
3470                                 /* Update the old monster */
3471                                 update_mon(c_ptr->m_idx, TRUE);
3472
3473                                 /* Wake up the moved monster */
3474                                 m_list[c_ptr->m_idx].csleep = 0;
3475                         }
3476
3477                         /* Hack -- Update the new location */
3478                         c_ptr->m_idx = m_idx;
3479
3480                         /* Move the monster */
3481                         m_ptr->fy = ny;
3482                         m_ptr->fx = nx;
3483
3484                         /* Update the monster */
3485                         update_mon(m_idx, TRUE);
3486
3487                         if (p_ptr->riding == m_idx)
3488                         {
3489                                 py = ny;
3490                                 px = nx;
3491                         }
3492
3493                         /* Redraw the old grid */
3494                         lite_spot(oy, ox);
3495
3496                         /* Redraw the new grid */
3497                         lite_spot(ny, nx);
3498
3499                         if (p_ptr->riding == m_idx)
3500                         {
3501                                 verify_panel();
3502
3503                                 /* Update stuff */
3504                                 p_ptr->update |= (PU_VIEW | PU_LITE | PU_FLOW);
3505
3506                                 /* Update the monsters */
3507                                 p_ptr->update |= (PU_DISTANCE);
3508
3509                                 /* Window stuff */
3510                                 p_ptr->window |= (PW_OVERHEAD | PW_DUNGEON);
3511                         }
3512
3513                         /* Possible disturb */
3514                         if (m_ptr->ml && (disturb_move ||
3515                                 ((m_ptr->mflag & MFLAG_VIEW) &&
3516                                 disturb_near)))
3517                         {
3518                                 /* Disturb */
3519                                 if (is_hostile(m_ptr))
3520                                         disturb(0, 0);
3521                         }
3522
3523                         /* Scan all objects in the grid */
3524                         for (this_o_idx = c_ptr->o_idx; this_o_idx; this_o_idx = next_o_idx)
3525                         {
3526                                 object_type *o_ptr;
3527
3528                                 /* Acquire object */
3529                                 o_ptr = &o_list[this_o_idx];
3530
3531                                 /* Acquire next object */
3532                                 next_o_idx = o_ptr->next_o_idx;
3533
3534                                 /* Skip gold */
3535                                 if (o_ptr->tval == TV_GOLD) continue;
3536
3537                                 /*
3538                                  * Skip "real" corpses and statues, to avoid extreme
3539                                  * silliness like a novice rogue pockets full of statues
3540                                  * and corpses.
3541                                  */
3542                                 if ((o_ptr->tval == TV_CORPSE) ||
3543                                     (o_ptr->tval == TV_STATUE)) continue;
3544
3545                                 /* Take or Kill objects on the floor */
3546                                 if ((r_ptr->flags2 & (RF2_TAKE_ITEM | RF2_KILL_ITEM)) &&
3547                                          (!is_pet(m_ptr) || (p_ptr->pet_extra_flags & PF_PICKUP_ITEMS)))
3548                                 {
3549                                         u32b flgs[TR_FLAG_SIZE];
3550
3551                                         u32b flg2 = 0L;
3552                                         u32b flg3 = 0L;
3553
3554                                         char m_name[80];
3555                                         char o_name[MAX_NLEN];
3556
3557                                         /* Extract some flags */
3558                                         object_flags(o_ptr, flgs);
3559
3560                                         /* Acquire the object name */
3561                                         object_desc(o_name, o_ptr, TRUE, 3);
3562
3563                                         /* Acquire the monster name */
3564                                         monster_desc(m_name, m_ptr, 0x04);
3565
3566                                         /* React to objects that hurt the monster */
3567                                         if (have_flag(flgs, TR_KILL_DRAGON)) flg3 |= (RF3_DRAGON);
3568                                         if (have_flag(flgs, TR_SLAY_DRAGON)) flg3 |= (RF3_DRAGON);
3569                                         if (have_flag(flgs, TR_SLAY_TROLL))  flg3 |= (RF3_TROLL);
3570                                         if (have_flag(flgs, TR_KILL_TROLL))  flg3 |= (RF3_TROLL);
3571                                         if (have_flag(flgs, TR_KILL_GIANT))  flg3 |= (RF3_GIANT);
3572                                         if (have_flag(flgs, TR_SLAY_GIANT))  flg3 |= (RF3_GIANT);
3573                                         if (have_flag(flgs, TR_SLAY_ORC))    flg3 |= (RF3_ORC);
3574                                         if (have_flag(flgs, TR_KILL_ORC))    flg3 |= (RF3_ORC);
3575                                         if (have_flag(flgs, TR_SLAY_DEMON))  flg3 |= (RF3_DEMON);
3576                                         if (have_flag(flgs, TR_KILL_DEMON))  flg3 |= (RF3_DEMON);
3577                                         if (have_flag(flgs, TR_SLAY_UNDEAD)) flg3 |= (RF3_UNDEAD);
3578                                         if (have_flag(flgs, TR_KILL_UNDEAD)) flg3 |= (RF3_UNDEAD);
3579                                         if (have_flag(flgs, TR_SLAY_ANIMAL)) flg3 |= (RF3_ANIMAL);
3580                                         if (have_flag(flgs, TR_KILL_ANIMAL)) flg3 |= (RF3_ANIMAL);
3581                                         if (have_flag(flgs, TR_SLAY_EVIL))   flg3 |= (RF3_EVIL);
3582                                         if (have_flag(flgs, TR_KILL_EVIL))   flg3 |= (RF3_EVIL);
3583                                         if (have_flag(flgs, TR_SLAY_HUMAN))  flg2 |= (RF2_HUMAN);
3584                                         if (have_flag(flgs, TR_KILL_HUMAN))  flg2 |= (RF2_HUMAN);
3585
3586                                         /* The object cannot be picked up by the monster */
3587                                         if (artifact_p(o_ptr) || (r_ptr->flags3 & flg3) || (r_ptr->flags2 & flg2) ||
3588                                                 (o_ptr->art_name))
3589                                         {
3590                                                 /* Only give a message for "take_item" */
3591                                                 if ((r_ptr->flags2 & (RF2_TAKE_ITEM)) && (r_ptr->flags2 & (RF2_STUPID)))
3592                                                 {
3593                                                         /* Take note */
3594                                                         did_take_item = TRUE;
3595
3596                                                         /* Describe observable situations */
3597                                                         if (m_ptr->ml && player_can_see_bold(ny, nx))
3598                                                         {
3599                                                                 /* Dump a message */
3600 #ifdef JP
3601 msg_format("%^s¤Ï%s¤ò½¦¤ª¤¦¤È¤·¤¿¤¬¡¢¤À¤á¤À¤Ã¤¿¡£", m_name, o_name);
3602 #else
3603 msg_format("%^s tries to pick up %s, but fails.", m_name, o_name);
3604 #endif
3605                                                         }
3606                                                 }
3607                                         }
3608
3609                                         /* Pick up the item */
3610                                         else if (r_ptr->flags2 & RF2_TAKE_ITEM)
3611                                         {
3612                                                 /* Take note */
3613                                                 did_take_item = TRUE;
3614
3615                                                 /* Describe observable situations */
3616                                                 if (player_can_see_bold(ny, nx))
3617                                                 {
3618                                                         /* Dump a message */
3619 #ifdef JP
3620 msg_format("%^s¤¬%s¤ò½¦¤Ã¤¿¡£", m_name, o_name);
3621 #else
3622                                                         msg_format("%^s picks up %s.", m_name, o_name);
3623 #endif
3624
3625                                                 }
3626
3627                                                 /* Excise the object */
3628                                                 excise_object_idx(this_o_idx);
3629
3630                                                 /* Forget mark */
3631                                                 o_ptr->marked = 0;
3632
3633                                                 /* Forget location */
3634                                                 o_ptr->iy = o_ptr->ix = 0;
3635
3636                                                 /* Memorize monster */
3637                                                 o_ptr->held_m_idx = m_idx;
3638
3639                                                 /* Build a stack */
3640                                                 o_ptr->next_o_idx = m_ptr->hold_o_idx;
3641
3642                                                 /* Carry object */
3643                                                 m_ptr->hold_o_idx = this_o_idx;
3644                                         }
3645
3646                                         /* Destroy the item if not a pet */
3647                                         else if (!is_pet(m_ptr))
3648                                         {
3649                                                 /* Take note */
3650                                                 did_kill_item = TRUE;
3651
3652                                                 /* Describe observable situations */
3653                                                 if (player_has_los_bold(ny, nx))
3654                                                 {
3655                                                         /* Dump a message */
3656 #ifdef JP
3657 msg_format("%^s¤¬%s¤òÇË²õ¤·¤¿¡£", m_name, o_name);
3658 #else
3659                                                         msg_format("%^s destroys %s.", m_name, o_name);
3660 #endif
3661
3662                                                 }
3663
3664                                                 /* Delete the object */
3665                                                 delete_object_idx(this_o_idx);
3666                                         }
3667                                 }
3668                         }
3669                 }
3670
3671                 /* Stop when done */
3672                 if (do_turn) break;
3673         }
3674
3675         /*
3676          *  Forward movements failed, but now received LOS attack!
3677          *  Try to flow by smell.
3678          */
3679         if (p_ptr->no_flowed && i > 2 &&  m_ptr->target_y)
3680                 m_ptr->mflag2 &= ~MFLAG_NOFLOW;
3681
3682         /* If we haven't done anything, try casting a spell again */
3683         if (!do_turn && !do_move && !m_ptr->monfear && !(p_ptr->riding == m_idx) && aware)
3684         {
3685                 /* Cast spell */
3686                 if (make_attack_spell(m_idx)) return;
3687         }
3688
3689
3690         /* Notice changes in view */
3691         if (do_view)
3692         {
3693                 /* Update some things */
3694                 p_ptr->update |= (PU_VIEW | PU_LITE | PU_FLOW | PU_MONSTERS | PU_MON_LITE);
3695         }
3696
3697         /* Notice changes in view */
3698         if (do_move && ((r_ptr->flags7 & (RF7_SELF_LITE_1 | RF7_SELF_LITE_2)) || ((r_ptr->flags7 & (RF7_HAS_LITE_1 | RF7_HAS_LITE_2)) && !p_ptr->inside_battle)))
3699         {
3700                 /* Update some things */
3701                 p_ptr->update |= (PU_MON_LITE);
3702         }
3703
3704         /* Learn things from observable monster */
3705         if (m_ptr->ml)
3706         {
3707                 /* Monster opened a door */
3708                 if (did_open_door) r_ptr->r_flags2 |= (RF2_OPEN_DOOR);
3709
3710                 /* Monster bashed a door */
3711                 if (did_bash_door) r_ptr->r_flags2 |= (RF2_BASH_DOOR);
3712
3713                 /* Monster tried to pick something up */
3714                 if (did_take_item) r_ptr->r_flags2 |= (RF2_TAKE_ITEM);
3715
3716                 /* Monster tried to crush something */
3717                 if (did_kill_item) r_ptr->r_flags2 |= (RF2_KILL_ITEM);
3718
3719                 /* Monster pushed past another monster */
3720                 if (did_move_body) r_ptr->r_flags2 |= (RF2_MOVE_BODY);
3721
3722                 /* Monster passed through a wall */
3723                 if (did_pass_wall) r_ptr->r_flags2 |= (RF2_PASS_WALL);
3724
3725                 /* Monster destroyed a wall */
3726                 if (did_kill_wall) r_ptr->r_flags2 |= (RF2_KILL_WALL);
3727         }
3728
3729
3730         /* Hack -- get "bold" if out of options */
3731         if (!do_turn && !do_move && m_ptr->monfear && aware)
3732         {
3733                 /* No longer afraid */
3734                 m_ptr->monfear = 0;
3735
3736                 /* Message if seen */
3737                 if (m_ptr->ml)
3738                 {
3739                         char m_name[80];
3740
3741                         /* Acquire the monster name */
3742                         monster_desc(m_name, m_ptr, 0);
3743
3744                         /* Dump a message */
3745 #ifdef JP
3746 msg_format("%^s¤ÏÀï¤¤¤ò·è°Õ¤·¤¿¡ª", m_name);
3747 #else
3748                         msg_format("%^s turns to fight!", m_name);
3749 #endif
3750
3751                         /* Redraw (later) if needed */
3752                         if (p_ptr->health_who == m_idx) p_ptr->redraw |= (PR_HEALTH);
3753
3754                         chg_virtue(V_COMPASSION, -1);
3755                 }
3756
3757                 /* XXX XXX XXX Actually do something now (?) */
3758         }
3759 }
3760
3761 /*
3762  * Process all the "live" monsters, once per game turn.
3763  *
3764  * During each game turn, we scan through the list of all the "live" monsters,
3765  * (backwards, so we can excise any "freshly dead" monsters), energizing each
3766  * monster, and allowing fully energized monsters to move, attack, pass, etc.
3767  *
3768  * Note that monsters can never move in the monster array (except when the
3769  * "compact_monsters()" function is called by "dungeon()" or "save_player()").
3770  *
3771  * This function is responsible for at least half of the processor time
3772  * on a normal system with a "normal" amount of monsters and a player doing
3773  * normal things.
3774  *
3775  * When the player is resting, virtually 90% of the processor time is spent
3776  * in this function, and its children, "process_monster()" and "make_move()".
3777  *
3778  * Most of the rest of the time is spent in "update_view()" and "lite_spot()",
3779  * especially when the player is running.
3780  *
3781  * Note the special "MFLAG_BORN" flag, which allows us to ignore "fresh"
3782  * monsters while they are still being "born".  A monster is "fresh" only
3783  * during the turn in which it is created, and we use the "hack_m_idx" to
3784  * determine if the monster is yet to be processed during the current turn.
3785  *
3786  * Note the special "MFLAG_NICE" flag, which allows the player to get one
3787  * move before any "nasty" monsters get to use their spell attacks.
3788  *
3789  * Note that when the "knowledge" about the currently tracked monster
3790  * changes (flags, attacks, spells), we induce a redraw of the monster
3791  * recall window.
3792  */
3793 void process_monsters(void)
3794 {
3795         int             i;
3796         int             fx, fy;
3797
3798         bool            test;
3799
3800         monster_type    *m_ptr;
3801         monster_race    *r_ptr;
3802
3803         int             old_monster_race_idx;
3804
3805         u32b    old_r_flags1 = 0L;
3806         u32b    old_r_flags2 = 0L;
3807         u32b    old_r_flags3 = 0L;
3808         u32b    old_r_flags4 = 0L;
3809         u32b    old_r_flags5 = 0L;
3810         u32b    old_r_flags6 = 0L;
3811
3812         byte    old_r_blows0 = 0;
3813         byte    old_r_blows1 = 0;
3814         byte    old_r_blows2 = 0;
3815         byte    old_r_blows3 = 0;
3816
3817         byte    old_r_cast_inate = 0;
3818         byte    old_r_cast_spell = 0;
3819
3820         int speed;
3821
3822         /* Clear monster fighting indicator */
3823         mon_fight = FALSE;
3824
3825         /* Memorize old race */
3826         old_monster_race_idx = p_ptr->monster_race_idx;
3827
3828         /* Acquire knowledge */
3829         if (p_ptr->monster_race_idx)
3830         {
3831                 /* Acquire current monster */
3832                 r_ptr = &r_info[p_ptr->monster_race_idx];
3833
3834                 /* Memorize flags */
3835                 old_r_flags1 = r_ptr->r_flags1;
3836                 old_r_flags2 = r_ptr->r_flags2;
3837                 old_r_flags3 = r_ptr->r_flags3;
3838                 old_r_flags4 = r_ptr->r_flags4;
3839                 old_r_flags5 = r_ptr->r_flags5;
3840                 old_r_flags6 = r_ptr->r_flags6;
3841
3842                 /* Memorize blows */
3843                 old_r_blows0 = r_ptr->r_blows[0];
3844                 old_r_blows1 = r_ptr->r_blows[1];
3845                 old_r_blows2 = r_ptr->r_blows[2];
3846                 old_r_blows3 = r_ptr->r_blows[3];
3847
3848                 /* Memorize castings */
3849                 old_r_cast_inate = r_ptr->r_cast_inate;
3850                 old_r_cast_spell = r_ptr->r_cast_spell;
3851         }
3852
3853
3854         /* Hack -- calculate the "player noise" */
3855         noise = (1L << (30 - p_ptr->skill_stl));
3856
3857
3858         /* Process the monsters (backwards) */
3859         for (i = m_max - 1; i >= 1; i--)
3860         {
3861                 /* Access the monster */
3862                 m_ptr = &m_list[i];
3863                 r_ptr = &r_info[m_ptr->r_idx];
3864
3865                 /* Handle "leaving" */
3866                 if (p_ptr->leaving) break;
3867
3868                 /* Ignore "dead" monsters */
3869                 if (!m_ptr->r_idx) continue;
3870
3871                 if (p_ptr->wild_mode) continue;
3872
3873
3874                 /* Handle "fresh" monsters */
3875                 if (m_ptr->mflag & MFLAG_BORN)
3876                 {
3877                         /* No longer "fresh" */
3878                         m_ptr->mflag &= ~(MFLAG_BORN);
3879
3880                         /* Skip */
3881                         continue;
3882                 }
3883
3884                 /* Hack -- Require proximity */
3885                 if (m_ptr->cdis >= 100) continue;
3886
3887
3888                 /* Access the location */
3889                 fx = m_ptr->fx;
3890                 fy = m_ptr->fy;
3891
3892                 /* Flow by smell is allowed */
3893                 if (!p_ptr->no_flowed)
3894                 {
3895                         m_ptr->mflag2 &= ~MFLAG_NOFLOW;
3896                 }
3897
3898                 /* Assume no move */
3899                 test = FALSE;
3900
3901                 /* Handle "sensing radius" */
3902                 if (m_ptr->cdis <= (is_pet(m_ptr) ? (r_ptr->aaf > 20 ? 20 : r_ptr->aaf) : r_ptr->aaf))
3903                 {
3904                         /* We can "sense" the player */
3905                         test = TRUE;
3906                 }
3907
3908                 /* Handle "sight" and "aggravation" */
3909                 else if ((m_ptr->cdis <= MAX_SIGHT) &&
3910                         (player_has_los_bold(fy, fx) || (p_ptr->cursed & TRC_AGGRAVATE)))
3911                 {
3912                         /* We can "see" or "feel" the player */
3913                         test = TRUE;
3914                 }
3915
3916 #if 0 /* (cave[py][px].when == cave[fy][fx].when) is always FALSE... */
3917                 /* Hack -- Monsters can "smell" the player from far away */
3918                 /* Note that most monsters have "aaf" of "20" or so */
3919                 else if (!(m_ptr->mflag2 & MFLAG_NOFLOW) &&
3920                         (cave_floor_bold(py, px) || (cave[py][px].feat == FEAT_TREES)) &&
3921                         (cave[py][px].when == cave[fy][fx].when) &&
3922                         (cave[fy][fx].dist < MONSTER_FLOW_DEPTH) &&
3923                         (cave[fy][fx].dist < r_ptr->aaf))
3924                 {
3925                         /* We can "smell" the player */
3926                         test = TRUE;
3927                 }
3928 #endif
3929                 else if (m_ptr->target_y) test = TRUE;
3930
3931                 /* Do nothing */
3932                 if (!test) continue;
3933
3934
3935                 if (p_ptr->riding == i)
3936                         speed = p_ptr->pspeed;
3937                 else
3938                 {
3939                         speed = MIN(199, m_ptr->mspeed);
3940
3941                         /* Monsters move quickly in Nightmare mode */
3942                         if (ironman_nightmare)
3943                         {
3944                                 speed = MIN(199, m_ptr->mspeed + 5);
3945                         }
3946
3947                         if (m_ptr->fast) speed = MIN(199, speed + 10);
3948                         if (m_ptr->slow) speed = MAX(0, speed - 10);
3949                 }
3950
3951                 /* Give this monster some energy */
3952                 m_ptr->energy_need -= extract_energy[speed];
3953
3954                 /* Not enough energy to move */
3955                 if (m_ptr->energy_need > 0) continue;
3956
3957                 /* Use up "some" energy */
3958                 m_ptr->energy_need += ENERGY_NEED();
3959
3960
3961                 /* Save global index */
3962                 hack_m_idx = i;
3963
3964                 /* Process the monster */
3965                 process_monster(i);
3966
3967                 reset_target(m_ptr);
3968
3969                 /* Give up flow_by_smell when it might useless */
3970                 if (p_ptr->no_flowed && one_in_(3))
3971                         m_ptr->mflag2 |= MFLAG_NOFLOW;
3972
3973                 /* Hack -- notice death or departure */
3974                 if (!p_ptr->playing || p_ptr->is_dead) break;
3975
3976                 /* Notice leaving */
3977                 if (p_ptr->leaving) break;
3978         }
3979
3980         /* Reset global index */
3981         hack_m_idx = 0;
3982
3983
3984         /* Tracking a monster race (the same one we were before) */
3985         if (p_ptr->monster_race_idx && (p_ptr->monster_race_idx == old_monster_race_idx))
3986         {
3987                 /* Acquire monster race */
3988                 r_ptr = &r_info[p_ptr->monster_race_idx];
3989
3990                 /* Check for knowledge change */
3991                 if ((old_r_flags1 != r_ptr->r_flags1) ||
3992                         (old_r_flags2 != r_ptr->r_flags2) ||
3993                         (old_r_flags3 != r_ptr->r_flags3) ||
3994                         (old_r_flags4 != r_ptr->r_flags4) ||
3995                         (old_r_flags5 != r_ptr->r_flags5) ||
3996                         (old_r_flags6 != r_ptr->r_flags6) ||
3997                         (old_r_blows0 != r_ptr->r_blows[0]) ||
3998                         (old_r_blows1 != r_ptr->r_blows[1]) ||
3999                         (old_r_blows2 != r_ptr->r_blows[2]) ||
4000                         (old_r_blows3 != r_ptr->r_blows[3]) ||
4001                         (old_r_cast_inate != r_ptr->r_cast_inate) ||
4002                         (old_r_cast_spell != r_ptr->r_cast_spell))
4003                 {
4004                         /* Window stuff */
4005                         p_ptr->window |= (PW_MONSTER);
4006                 }
4007         }
4008 }
4009
4010
4011
4012 bool process_the_world(int num, int who, bool vs_player)
4013 {
4014         monster_type *m_ptr = &m_list[hack_m_idx];  /* the world monster */
4015
4016         if(world_monster) return (FALSE);
4017
4018         if(vs_player)
4019         {
4020                 char m_name[80];
4021                 monster_desc(m_name, m_ptr, 0);
4022
4023                 if (who == 1)
4024 #ifdef JP
4025                         msg_print("¡Ö¡Ø¥¶¡¦¥ï¡¼¥ë¥É¡Ù¡ª»þ¤Ï»ß¤Þ¤Ã¤¿¡ª¡×");
4026 #else
4027                         msg_format("%s yells 'The World! Time has stopped!'", m_name);
4028 #endif
4029                 else if (who == 3)
4030 #ifdef JP
4031                         msg_print("¡Ö»þ¤è¡ª¡×");
4032 #else
4033                         msg_format("%s yells 'Time!'", m_name);
4034 #endif
4035                 else msg_print("hek!");
4036
4037                 msg_print(NULL);
4038         }
4039
4040         world_monster = TRUE;
4041
4042         if (vs_player) do_cmd_redraw();
4043
4044         while(num--)
4045         {
4046                 if(!m_ptr->r_idx) break;
4047                 process_monster(hack_m_idx);
4048
4049                 reset_target(m_ptr);
4050
4051                 /* Notice stuff */
4052                 if (p_ptr->notice) notice_stuff();
4053
4054                 /* Update stuff */
4055                 if (p_ptr->update) update_stuff();
4056
4057                 /* Redraw stuff */
4058                 if (p_ptr->redraw) redraw_stuff();
4059
4060                 /* Redraw stuff */
4061                 if (p_ptr->window) window_stuff();
4062
4063                 /* Delay */
4064                 if (vs_player) Term_xtra(TERM_XTRA_DELAY, 500);
4065         }
4066
4067         /* Redraw map */
4068         p_ptr->redraw |= (PR_MAP);
4069
4070         /* Update monsters */
4071         p_ptr->update |= (PU_MONSTERS);
4072
4073         /* Window stuff */
4074         p_ptr->window |= (PW_OVERHEAD | PW_DUNGEON);
4075
4076         world_monster = FALSE;
4077         if (vs_player || los(py, px, m_ptr->fy, m_ptr->fx))
4078         {
4079 #ifdef JP
4080                 msg_print("¡Ö»þ¤ÏÆ°¤¤À¤¹¡Ä¡×");
4081 #else
4082                 msg_print("You feel time flowing around you once more.");
4083 #endif
4084                 msg_print(NULL);
4085         }
4086
4087         handle_stuff();
4088
4089         return (TRUE);
4090 }
4091
4092
4093 void monster_gain_exp(int m_idx, int s_idx)
4094 {
4095         monster_type *m_ptr = &m_list[m_idx];
4096         monster_race *r_ptr = &r_info[m_ptr->r_idx];
4097         monster_race *s_ptr = &r_info[s_idx];
4098         int new_exp;
4099
4100         if (p_ptr->inside_battle) return;
4101
4102         if (!r_ptr->next_exp) return;
4103
4104         new_exp = s_ptr->mexp * s_ptr->level / (r_ptr->level + 2);
4105         if (m_idx == p_ptr->riding) new_exp = (new_exp + 1) / 2;
4106         if (!dun_level) new_exp /= 5;
4107         m_ptr->exp += new_exp;
4108         if (m_ptr->mflag2 & MFLAG_CHAMELEON) return;
4109
4110         if (m_ptr->exp >= r_ptr->next_exp)
4111         {
4112                 char m_name[80];
4113                 int old_hp = m_ptr->hp;
4114                 int old_maxhp = m_ptr->max_maxhp;
4115                 int old_r_idx = m_ptr->r_idx;
4116                 int i;
4117
4118                 monster_desc(m_name, m_ptr, 0);
4119                 m_ptr->r_idx = r_ptr->next_r_idx;
4120                 m_ptr->ap_r_idx = m_ptr->r_idx;
4121                 r_ptr = &r_info[m_ptr->r_idx];
4122                 if (r_ptr->flags1 & RF1_FORCE_MAXHP)
4123                 {
4124                         m_ptr->max_maxhp = maxroll(r_ptr->hdice, r_ptr->hside);
4125                 }
4126                 else
4127                 {
4128                         m_ptr->max_maxhp = damroll(r_ptr->hdice, r_ptr->hside);
4129                 }
4130                 if (ironman_nightmare)
4131                 {
4132                         u32b hp = m_ptr->max_maxhp * 2L;
4133
4134                         m_ptr->max_maxhp = (s16b)MIN(30000, hp);
4135                 }
4136                 m_ptr->maxhp = m_ptr->max_maxhp;
4137                 m_ptr->hp = old_hp * m_ptr->maxhp / old_maxhp;
4138
4139                 /* Extract the monster base speed */
4140                 m_ptr->mspeed = r_ptr->speed;
4141
4142                 /* Hack -- small racial variety */
4143                 if (!(r_ptr->flags1 & RF1_UNIQUE) && !p_ptr->inside_arena)
4144                 {
4145                         /* Allow some small variation per monster */
4146                   if(one_in_(4)){
4147                         i = extract_energy[r_ptr->speed] / 3;
4148                         if (i) m_ptr->mspeed += rand_spread(0, i);
4149                   }
4150                   else{
4151                         i = extract_energy[r_ptr->speed] / 10;
4152                         if (i) m_ptr->mspeed += rand_spread(0, i);
4153                   }
4154                 }
4155
4156                 if (m_ptr->mspeed > 199) m_ptr->mspeed = 199;
4157
4158                 m_ptr->exp = 0;
4159
4160                 if (is_pet(m_ptr) || m_ptr->ml)
4161                 {
4162 #ifdef JP
4163                         msg_format("%s¤Ï%s¤Ë¿Ê²½¤·¤¿¡£", m_name, r_name + r_ptr->name);
4164 #else
4165                         msg_format("%^s evolved into %s.", m_name, r_name + r_ptr->name);
4166 #endif
4167                         r_info[old_r_idx].r_xtra1 |= MR1_SINKA;
4168                 }
4169                 update_mon(m_idx, FALSE);
4170                 lite_spot(m_ptr->fy, m_ptr->fx);
4171         }
4172         if (m_idx == p_ptr->riding) p_ptr->update |= PU_BONUS;
4173 }