src/melee2.c

   1 /* File: melee2.c */
   2
   3 /*
   4  * Copyright (c) 1997 Ben Harrison, James E. Wilson, Robert A. Koeneke
   5  *
   6  * This software may be copied and distributed for educational, research,
   7  * and not for profit purposes provided that this copyright and statement
   8  * are included in all such copies.  Other copyrights may also apply.
   9  */
  10
  11 /* Purpose: Monster spells and movement */
  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 && player_bold(m_ptr->fy, m_ptr->fx))
  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
  64                         if (!dummy) continue;
  65
  66                         t_idx = dummy;
  67                         t_ptr = &m_list[t_idx];
  68
  69                         /* The monster itself isn't a target */
  70                         if (t_ptr == m_ptr) continue;
  71
  72                         /* Paranoia -- Skip dead monsters */
  73                         if (!t_ptr->r_idx) continue;
  74
  75                         if (is_pet(m_ptr))
  76                         {
  77                                 /* Hack -- only fight away from player */
  78                                 if (p_ptr->pet_follow_distance < 0)
  79                                 {
  80                                         /* No fighting near player */
  81                                         if (t_ptr->cdis <= (0 - p_ptr->pet_follow_distance))
  82                                         {
  83                                                 continue;
  84                                         }
  85                                 }
  86                                 /* Hack -- no fighting away from player */
  87                                 else if ((m_ptr->cdis < t_ptr->cdis) &&
  88                                                         (t_ptr->cdis > p_ptr->pet_follow_distance))
  89                                 {
  90                                         continue;
  91                                 }
  92
  93                                 if (r_ptr->aaf < t_ptr->cdis) continue;
  94                         }
  95
  96                         /* Monster must be 'an enemy' */
  97                         if (!are_enemies(m_ptr, t_ptr)) continue;
  98
  99                         /* Monster must be projectable if we can't pass through walls */
 100                         if (((r_ptr->flags2 & RF2_PASS_WALL) && ((m_idx != p_ptr->riding) || p_ptr->pass_wall)) ||
 101                             ((r_ptr->flags2 & RF2_KILL_WALL) && (m_idx != p_ptr->riding)))
 102                         {
 103                                 if (!in_disintegration_range(m_ptr->fy, m_ptr->fx, t_ptr->fy, t_ptr->fx)) continue;
 104                         }
 105                         else
 106                         {
 107                                 if (!projectable(m_ptr->fy, m_ptr->fx, t_ptr->fy, t_ptr->fx)) continue;
 108                         }
 109
 110                         /* OK -- we've got a target */
 111                         y = t_ptr->fy;
 112                         x = t_ptr->fx;
 113
 114                         break;
 115                 }
 116                 if (!x && !y) return FALSE;
 117         }
 118
 119         /* Extract the direction */
 120         x -= m_ptr->fx;
 121         y -= m_ptr->fy;
 122
 123         /* North */
 124         if ((y < 0) && (x == 0))
 125         {
 126                 mm[0] = 8;
 127                 mm[1] = 7;
 128                 mm[2] = 9;
 129         }
 130         /* South */
 131         else if ((y > 0) && (x == 0))
 132         {
 133                 mm[0] = 2;
 134                 mm[1] = 1;
 135                 mm[2] = 3;
 136         }
 137         /* East */
 138         else if ((x > 0) && (y == 0))
 139         {
 140                 mm[0] = 6;
 141                 mm[1] = 9;
 142                 mm[2] = 3;
 143         }
 144         /* West */
 145         else if ((x < 0) && (y == 0))
 146         {
 147                 mm[0] = 4;
 148                 mm[1] = 7;
 149                 mm[2] = 1;
 150         }
 151         /* North-West */
 152         else if ((y < 0) && (x < 0))
 153         {
 154                 mm[0] = 7;
 155                 mm[1] = 4;
 156                 mm[2] = 8;
 157         }
 158         /* North-East */
 159         else if ((y < 0) && (x > 0))
 160         {
 161                 mm[0] = 9;
 162                 mm[1] = 6;
 163                 mm[2] = 8;
 164         }
 165         /* South-West */
 166         else if ((y > 0) && (x < 0))
 167         {
 168                 mm[0] = 1;
 169                 mm[1] = 4;
 170                 mm[2] = 2;
 171         }
 172         /* South-East */
 173         else if ((y > 0) && (x > 0))
 174         {
 175                 mm[0] = 3;
 176                 mm[1] = 6;
 177                 mm[2] = 2;
 178         }
 179
 180         /* Found a monster */
 181         return TRUE;
 182 }
 183
 184
 185 /*
 186  * Hack, based on mon_take_hit... perhaps all monster attacks on
 187  * other monsters should use this?
 188  */
 189 void mon_take_hit_mon(int m_idx, int dam, bool *fear, cptr note, int who)
 190 {
 191         monster_type    *m_ptr = &m_list[m_idx];
 192
 193         monster_race    *r_ptr = &r_info[m_ptr->r_idx];
 194
 195         char m_name[160];
 196
 197         bool seen = is_seen(m_ptr);
 198
 199         /* Can the player be aware of this attack? */
 200         bool known = (m_ptr->cdis <= MAX_SIGHT);
 201
 202         /* Extract monster name */
 203         monster_desc(m_name, m_ptr, 0);
 204
 205         /* Redraw (later) if needed */
 206         if (m_ptr->ml)
 207         {
 208                 if (p_ptr->health_who == m_idx) p_ptr->redraw |= (PR_HEALTH);
 209                 if (p_ptr->riding == m_idx) p_ptr->redraw |= (PR_UHEALTH);
 210         }
 211
 212         /* Wake it up */
 213         m_ptr->csleep = 0;
 214
 215         if (r_ptr->flags7 & RF7_HAS_LD_MASK) p_ptr->update |= (PU_MON_LITE);
 216
 217         if (p_ptr->riding && (m_idx == p_ptr->riding)) disturb(1, 0);
 218
 219         if (m_ptr->invulner && randint0(PENETRATE_INVULNERABILITY))
 220         {
 221                 if (seen)
 222                 {
 223 #ifdef JP
 224 msg_format("%^s¤Ï¥À¥á¡¼¥¸¤ò¼õ¤±¤Ê¤¤¡£", m_name);
 225 #else
 226                         msg_format("%^s is unharmed.", m_name);
 227 #endif
 228
 229                 }
 230
 231                 return;
 232         }
 233
 234         if (r_ptr->flagsr & RFR_RES_ALL)
 235         {
 236                 if(dam > 0)
 237                 {
 238                         dam /= 100;
 239                         if((dam == 0) && one_in_(3)) dam = 1;
 240                 }
 241                 if (dam==0)
 242                 {
 243                         if (seen)
 244                         {
 245 #ifdef JP
 246 msg_format("%^s¤Ï¥À¥á¡¼¥¸¤ò¼õ¤±¤Ê¤¤¡£", m_name);
 247 #else
 248                                 msg_format("%^s is unharmed.", m_name);
 249 #endif
 250
 251                         }
 252                         return;
 253                 }
 254         }
 255
 256         /* Hurt it */
 257         m_ptr->hp -= dam;
 258
 259         /* It is dead now... or is it? */
 260         if (m_ptr->hp < 0)
 261         {
 262                 if (((r_ptr->flags1 & (RF1_UNIQUE | RF1_QUESTOR)) ||
 263                     (r_ptr->flags7 & RF7_NAZGUL)) &&
 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, MD_TRUE_NAME);
 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]) && !player_bold(m_ptr->target_y, m_ptr->target_x))
 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 (player_bold(y, x)) 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) && (m_idx != p_ptr->riding))))
 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_scent = FALSE;
 608
 609         monster_type *m_ptr = &m_list[m_idx];
 610         monster_race *r_ptr = &r_info[m_ptr->r_idx];
 611
 612         /* Can monster cast attack spell? */
 613         if (r_ptr->flags4 & (RF4_ATTACK_MASK) ||
 614             r_ptr->flags5 & (RF5_ATTACK_MASK) ||
 615             r_ptr->flags6 & (RF6_ATTACK_MASK))
 616         {
 617                 /* Can move spell castable grid? */
 618                 if (get_moves_aux2(m_idx, yp, xp)) return (TRUE);
 619         }
 620
 621         /* Monster can't flow */
 622         if (no_flow) return (FALSE);
 623
 624         /* Monster can go through rocks */
 625         if ((r_ptr->flags2 & RF2_PASS_WALL) && ((m_idx != p_ptr->riding) || p_ptr->pass_wall)) return (FALSE);
 626         if ((r_ptr->flags2 & RF2_KILL_WALL) && (m_idx != p_ptr->riding)) return (FALSE);
 627
 628         /* Monster location */
 629         y1 = m_ptr->fy;
 630         x1 = m_ptr->fx;
 631
 632         /* Hack -- Player can see us, run towards him */
 633         if (player_has_los_bold(y1, x1) && projectable(py, px, y1, x1)) return (FALSE);
 634
 635         /* Monster grid */
 636         c_ptr = &cave[y1][x1];
 637
 638         /* If we can hear noises, advance towards them */
 639         if (c_ptr->cost)
 640         {
 641                 best = 999;
 642         }
 643
 644         /* Otherwise, try to follow a scent trail */
 645         else if (c_ptr->when)
 646         {
 647                 /* Too old smell */
 648                 if (cave[py][px].when - c_ptr->when > 127) return (FALSE);
 649
 650                 use_scent = TRUE;
 651                 best = 0;
 652         }
 653
 654         /* Otherwise, advance blindly */
 655         else
 656         {
 657                 return (FALSE);
 658         }
 659
 660         /* Check nearby grids, diagonals first */
 661         for (i = 7; i >= 0; i--)
 662         {
 663                 /* Get the location */
 664                 y = y1 + ddy_ddd[i];
 665                 x = x1 + ddx_ddd[i];
 666
 667                 /* Ignore locations off of edge */
 668                 if (!in_bounds2(y, x)) continue;
 669
 670                 c_ptr = &cave[y][x];
 671
 672                 /* We're following a scent trail */
 673                 if (use_scent)
 674                 {
 675                         int when = c_ptr->when;
 676
 677                         /* Accept younger scent */
 678                         if (best > when) continue;
 679                         best = when;
 680                 }
 681
 682                 /* We're using sound */
 683                 else
 684                 {
 685                         int cost;
 686
 687                         if (r_ptr->flags2 & (RF2_BASH_DOOR | RF2_OPEN_DOOR))
 688                                 cost = c_ptr->dist;
 689                         else cost = c_ptr->cost;
 690
 691                         /* Accept louder sounds */
 692                         if ((cost == 0) || (best < cost)) continue;
 693                         best = cost;
 694                 }
 695
 696                 /* Hack -- Save the "twiddled" location */
 697                 (*yp) = py + 16 * ddy_ddd[i];
 698                 (*xp) = px + 16 * ddx_ddd[i];
 699         }
 700
 701         /* No legal move (?) */
 702         if (best == 999 || best == 0) return (FALSE);
 703
 704         /* Success */
 705         return (TRUE);
 706 }
 707
 708
 709 /*
 710 * Provide a location to flee to, but give the player a wide berth.
 711 *
 712 * A monster may wish to flee to a location that is behind the player,
 713 * but instead of heading directly for it, the monster should "swerve"
 714 * around the player so that he has a smaller chance of getting hit.
 715 */
 716 static bool get_fear_moves_aux(int m_idx, int *yp, int *xp)
 717 {
 718         int y, x, y1, x1, fy, fx, gy = 0, gx = 0;
 719         int score = -1;
 720         int i;
 721
 722         monster_type *m_ptr = &m_list[m_idx];
 723
 724         /* Monster location */
 725         fy = m_ptr->fy;
 726         fx = m_ptr->fx;
 727
 728         /* Desired destination */
 729         y1 = fy - (*yp);
 730         x1 = fx - (*xp);
 731
 732         /* Check nearby grids, diagonals first */
 733         for (i = 7; i >= 0; i--)
 734         {
 735                 int dis, s;
 736
 737                 /* Get the location */
 738                 y = fy + ddy_ddd[i];
 739                 x = fx + ddx_ddd[i];
 740
 741                 /* Ignore locations off of edge */
 742                 if (!in_bounds2(y, x)) continue;
 743
 744                 /* Don't move toward player */
 745                 /* if (cave[y][x].dist < 3) continue; */ /* Hmm.. Need it? */
 746
 747                 /* Calculate distance of this grid from our destination */
 748                 dis = distance(y, x, y1, x1);
 749
 750                 /* Score this grid */
 751                 s = 5000 / (dis + 3) - 500 / (cave[y][x].dist + 1);
 752
 753                 /* No negative scores */
 754                 if (s < 0) s = 0;
 755
 756                 /* Ignore lower scores */
 757                 if (s < score) continue;
 758
 759                 /* Save the score and time */
 760                 score = s;
 761
 762                 /* Save the location */
 763                 gy = y;
 764                 gx = x;
 765         }
 766
 767         /* No legal move (?) */
 768         if (score == -1) return (FALSE);
 769
 770         /* Find deltas */
 771         (*yp) = fy - gy;
 772         (*xp) = fx - gx;
 773
 774         /* Success */
 775         return (TRUE);
 776 }
 777
 778 /*
 779  * Hack -- Precompute a bunch of calls to distance() in find_safety() and
 780  * find_hiding().
 781  *
 782  * The pair of arrays dist_offsets_y[n] and dist_offsets_x[n] contain the
 783  * offsets of all the locations with a distance of n from a central point,
 784  * with an offset of (0,0) indicating no more offsets at this distance.
 785  *
 786  * This is, of course, fairly unreadable, but it eliminates multiple loops
 787  * from the previous version.
 788  *
 789  * It is probably better to replace these arrays with code to compute
 790  * the relevant arrays, even if the storage is pre-allocated in hard
 791  * coded sizes.  At the very least, code should be included which is
 792  * able to generate and dump these arrays (ala "los()").  XXX XXX XXX
 793  *
 794  * Also, the storage needs could be halved by using bytes.  XXX XXX XXX
 795  *
 796  * These arrays could be combined into two big arrays, using sub-arrays
 797  * to hold the offsets and lengths of each portion of the sub-arrays, and
 798  * this could perhaps also be used somehow in the "look" code.  XXX XXX XXX
 799  */
 800
 801
 802 static sint d_off_y_0[] =
 803 { 0 };
 804
 805 static sint d_off_x_0[] =
 806 { 0 };
 807
 808
 809 static sint d_off_y_1[] =
 810 { -1, -1, -1, 0, 0, 1, 1, 1, 0 };
 811
 812 static sint d_off_x_1[] =
 813 { -1, 0, 1, -1, 1, -1, 0, 1, 0 };
 814
 815
 816 static sint d_off_y_2[] =
 817 { -1, -1, -2, -2, -2, 0, 0, 1, 1, 2, 2, 2, 0 };
 818
 819 static sint d_off_x_2[] =
 820 { -2, 2, -1, 0, 1, -2, 2, -2, 2, -1, 0, 1, 0 };
 821
 822
 823 static sint d_off_y_3[] =
 824 { -1, -1, -2, -2, -3, -3, -3, 0, 0, 1, 1, 2, 2,
 825   3, 3, 3, 0 };
 826
 827 static sint d_off_x_3[] =
 828 { -3, 3, -2, 2, -1, 0, 1, -3, 3, -3, 3, -2, 2,
 829   -1, 0, 1, 0 };
 830
 831
 832 static sint d_off_y_4[] =
 833 { -1, -1, -2, -2, -3, -3, -3, -3, -4, -4, -4, 0,
 834   0, 1, 1, 2, 2, 3, 3, 3, 3, 4, 4, 4, 0 };
 835
 836 static sint d_off_x_4[] =
 837 { -4, 4, -3, 3, -2, -3, 2, 3, -1, 0, 1, -4, 4,
 838   -4, 4, -3, 3, -2, -3, 2, 3, -1, 0, 1, 0 };
 839
 840
 841 static sint d_off_y_5[] =
 842 { -1, -1, -2, -2, -3, -3, -4, -4, -4, -4, -5, -5,
 843   -5, 0, 0, 1, 1, 2, 2, 3, 3, 4, 4, 4, 4, 5, 5,
 844   5, 0 };
 845
 846 static sint d_off_x_5[] =
 847 { -5, 5, -4, 4, -4, 4, -2, -3, 2, 3, -1, 0, 1,
 848   -5, 5, -5, 5, -4, 4, -4, 4, -2, -3, 2, 3, -1,
 849   0, 1, 0 };
 850
 851
 852 static sint d_off_y_6[] =
 853 { -1, -1, -2, -2, -3, -3, -4, -4, -5, -5, -5, -5,
 854   -6, -6, -6, 0, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5,
 855   5, 5, 6, 6, 6, 0 };
 856
 857 static sint d_off_x_6[] =
 858 { -6, 6, -5, 5, -5, 5, -4, 4, -2, -3, 2, 3, -1,
 859   0, 1, -6, 6, -6, 6, -5, 5, -5, 5, -4, 4, -2,
 860   -3, 2, 3, -1, 0, 1, 0 };
 861
 862
 863 static sint d_off_y_7[] =
 864 { -1, -1, -2, -2, -3, -3, -4, -4, -5, -5, -5, -5,
 865   -6, -6, -6, -6, -7, -7, -7, 0, 0, 1, 1, 2, 2, 3,
 866   3, 4, 4, 5, 5, 5, 5, 6, 6, 6, 6, 7, 7, 7, 0 };
 867
 868 static sint d_off_x_7[] =
 869 { -7, 7, -6, 6, -6, 6, -5, 5, -4, -5, 4, 5, -2,
 870   -3, 2, 3, -1, 0, 1, -7, 7, -7, 7, -6, 6, -6,
 871   6, -5, 5, -4, -5, 4, 5, -2, -3, 2, 3, -1, 0,
 872   1, 0 };
 873
 874
 875 static sint d_off_y_8[] =
 876 { -1, -1, -2, -2, -3, -3, -4, -4, -5, -5, -6, -6,
 877   -6, -6, -7, -7, -7, -7, -8, -8, -8, 0, 0, 1, 1,
 878   2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 6, 6, 7, 7, 7, 7,
 879   8, 8, 8, 0 };
 880
 881 static sint d_off_x_8[] =
 882 { -8, 8, -7, 7, -7, 7, -6, 6, -6, 6, -4, -5, 4,
 883   5, -2, -3, 2, 3, -1, 0, 1, -8, 8, -8, 8, -7,
 884   7, -7, 7, -6, 6, -6, 6, -4, -5, 4, 5, -2, -3,
 885   2, 3, -1, 0, 1, 0 };
 886
 887
 888 static sint d_off_y_9[] =
 889 { -1, -1, -2, -2, -3, -3, -4, -4, -5, -5, -6, -6,
 890   -7, -7, -7, -7, -8, -8, -8, -8, -9, -9, -9, 0,
 891   0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 7,
 892   7, 8, 8, 8, 8, 9, 9, 9, 0 };
 893
 894 static sint d_off_x_9[] =
 895 { -9, 9, -8, 8, -8, 8, -7, 7, -7, 7, -6, 6, -4,
 896   -5, 4, 5, -2, -3, 2, 3, -1, 0, 1, -9, 9, -9,
 897   9, -8, 8, -8, 8, -7, 7, -7, 7, -6, 6, -4, -5,
 898   4, 5, -2, -3, 2, 3, -1, 0, 1, 0 };
 899
 900
 901 static sint *dist_offsets_y[10] =
 902 {
 903         d_off_y_0, d_off_y_1, d_off_y_2, d_off_y_3, d_off_y_4,
 904         d_off_y_5, d_off_y_6, d_off_y_7, d_off_y_8, d_off_y_9
 905 };
 906
 907 static sint *dist_offsets_x[10] =
 908 {
 909         d_off_x_0, d_off_x_1, d_off_x_2, d_off_x_3, d_off_x_4,
 910         d_off_x_5, d_off_x_6, d_off_x_7, d_off_x_8, d_off_x_9
 911 };
 912
 913 /*
 914 * Choose a "safe" location near a monster for it to run toward.
 915 *
 916 * A location is "safe" if it can be reached quickly and the player
 917 * is not able to fire into it (it isn't a "clean shot").  So, this will
 918 * cause monsters to "duck" behind walls.  Hopefully, monsters will also
 919 * try to run towards corridor openings if they are in a room.
 920 *
 921 * This function may take lots of CPU time if lots of monsters are
 922 * fleeing.
 923 *
 924 * Return TRUE if a safe location is available.
 925 */
 926 static bool find_safety(int m_idx, int *yp, int *xp)
 927 {
 928         monster_type *m_ptr = &m_list[m_idx];
 929
 930         int fy = m_ptr->fy;
 931         int fx = m_ptr->fx;
 932
 933         int y, x, dy, dx, d, dis, i;
 934         int gy = 0, gx = 0, gdis = 0;
 935
 936         sint *y_offsets;
 937         sint *x_offsets;
 938
 939         cave_type *c_ptr;
 940
 941         /* Start with adjacent locations, spread further */
 942         for (d = 1; d < 10; d++)
 943         {
 944                 /* Get the lists of points with a distance d from (fx, fy) */
 945                 y_offsets = dist_offsets_y[d];
 946                 x_offsets = dist_offsets_x[d];
 947
 948                 /* Check the locations */
 949                 for (i = 0, dx = x_offsets[0], dy = y_offsets[0];
 950                      dx != 0 || dy != 0;
 951                      i++, dx = x_offsets[i], dy = y_offsets[i])
 952                 {
 953                         y = fy + dy;
 954                         x = fx + dx;
 955
 956                         /* Skip illegal locations */
 957                         if (!in_bounds(y, x)) continue;
 958
 959                         c_ptr = &cave[y][x];
 960
 961                         /* Skip locations in a wall */
 962                         if (!monster_can_cross_terrain(c_ptr->feat, &r_info[m_ptr->r_idx], (m_idx == p_ptr->riding) ? CEM_RIDING : 0)) continue;
 963
 964                         /* Check for "availability" (if monsters can flow) */
 965                         if (!(m_ptr->mflag2 & MFLAG2_NOFLOW))
 966                         {
 967                                 /* Ignore grids very far from the player */
 968                                 if (c_ptr->dist == 0) continue;
 969
 970                                 /* Ignore too-distant grids */
 971                                 if (c_ptr->dist > cave[fy][fx].dist + 2 * d) continue;
 972                         }
 973
 974                         /* Check for absence of shot (more or less) */
 975                         if (!projectable(py, px, y, x))
 976                         {
 977                                 /* Calculate distance from player */
 978                                 dis = distance(y, x, py, px);
 979
 980                                 /* Remember if further than previous */
 981                                 if (dis > gdis)
 982                                 {
 983                                         gy = y;
 984                                         gx = x;
 985                                         gdis = dis;
 986                                 }
 987                         }
 988                 }
 989
 990                 /* Check for success */
 991                 if (gdis > 0)
 992                 {
 993                         /* Good location */
 994                         (*yp) = fy - gy;
 995                         (*xp) = fx - gx;
 996
 997                         /* Found safe place */
 998                         return (TRUE);
 999                 }
1000         }
1001
1002         /* No safe place */
1003         return (FALSE);
1004 }
1005
1006
1007 /*
1008  * Choose a good hiding place near a monster for it to run toward.
1009  *
1010  * Pack monsters will use this to "ambush" the player and lure him out
1011  * of corridors into open space so they can swarm him.
1012  *
1013  * Return TRUE if a good location is available.
1014  */
1015 static bool find_hiding(int m_idx, int *yp, int *xp)
1016 {
1017         monster_type *m_ptr = &m_list[m_idx];
1018         monster_race *r_ptr = &r_info[m_ptr->r_idx];
1019
1020         int fy = m_ptr->fy;
1021         int fx = m_ptr->fx;
1022
1023         int y, x, dy, dx, d, dis, i;
1024         int gy = 0, gx = 0, gdis = 999;
1025
1026         sint *y_offsets, *x_offsets;
1027
1028         /* Start with adjacent locations, spread further */
1029         for (d = 1; d < 10; d++)
1030         {
1031                 /* Get the lists of points with a distance d from (fx, fy) */
1032                 y_offsets = dist_offsets_y[d];
1033                 x_offsets = dist_offsets_x[d];
1034
1035                 /* Check the locations */
1036                 for (i = 0, dx = x_offsets[0], dy = y_offsets[0];
1037                      dx != 0 || dy != 0;
1038                      i++, dx = x_offsets[i], dy = y_offsets[i])
1039                 {
1040                         y = fy + dy;
1041                         x = fx + dx;
1042
1043                         /* Skip illegal locations */
1044                         if (!in_bounds(y, x)) continue;
1045
1046                         /* Skip occupied locations */
1047                         if (!monster_can_enter(y, x, r_ptr, 0)) continue;
1048
1049                         /* Check for hidden, available grid */
1050                         if (!projectable(py, px, y, x) && clean_shot(fy, fx, y, x, FALSE))
1051                         {
1052                                 /* Calculate distance from player */
1053                                 dis = distance(y, x, py, px);
1054
1055                                 /* Remember if closer than previous */
1056                                 if (dis < gdis && dis >= 2)
1057                                 {
1058                                         gy = y;
1059                                         gx = x;
1060                                         gdis = dis;
1061                                 }
1062                         }
1063                 }
1064
1065                 /* Check for success */
1066                 if (gdis < 999)
1067                 {
1068                         /* Good location */
1069                         (*yp) = fy - gy;
1070                         (*xp) = fx - gx;
1071
1072                         /* Found good place */
1073                         return (TRUE);
1074                 }
1075         }
1076
1077         /* No good place */
1078         return (FALSE);
1079 }
1080
1081
1082 /*
1083  * Choose "logical" directions for monster movement
1084  */
1085 static bool get_moves(int m_idx, int *mm)
1086 {
1087         monster_type *m_ptr = &m_list[m_idx];
1088         monster_race *r_ptr = &r_info[m_ptr->r_idx];
1089         int          y, ay, x, ax;
1090         int          move_val = 0;
1091         int          y2 = py;
1092         int          x2 = px;
1093         bool         done = FALSE;
1094         bool         will_run = mon_will_run(m_idx);
1095         cave_type    *c_ptr;
1096         bool         no_flow = ((m_ptr->mflag2 & MFLAG2_NOFLOW) && (cave[m_ptr->fy][m_ptr->fx].cost > 2));
1097         bool         can_pass_wall = ((r_ptr->flags2 & RF2_PASS_WALL) && ((m_idx != p_ptr->riding) || p_ptr->pass_wall));
1098
1099         /* Counter attack to an enemy monster */
1100         if (!will_run && m_ptr->target_y)
1101         {
1102                 int t_m_idx = cave[m_ptr->target_y][m_ptr->target_x].m_idx;
1103
1104                 /* The monster must be an enemy, and in LOS */
1105                 if (t_m_idx &&
1106                     are_enemies(m_ptr, &m_list[t_m_idx]) &&
1107                     los(m_ptr->fy, m_ptr->fx, m_ptr->target_y, m_ptr->target_x) &&
1108                     projectable(m_ptr->fy, m_ptr->fx, m_ptr->target_y, m_ptr->target_x))
1109                 {
1110                         /* Extract the "pseudo-direction" */
1111                         y = m_ptr->fy - m_ptr->target_y;
1112                         x = m_ptr->fx - m_ptr->target_x;
1113                         done = TRUE;
1114                 }
1115         }
1116
1117         if (!done && !will_run && is_hostile(m_ptr) &&
1118             (r_ptr->flags1 & RF1_FRIENDS) &&
1119             ((los(m_ptr->fy, m_ptr->fx, py, px) && projectable(m_ptr->fy, m_ptr->fx, py, px)) ||
1120             (cave[m_ptr->fy][m_ptr->fx].dist < MAX_SIGHT / 2)))
1121         {
1122         /*
1123          * Animal packs try to get the player out of corridors
1124          * (...unless they can move through walls -- TY)
1125          */
1126                 if ((r_ptr->flags3 & RF3_ANIMAL) && !can_pass_wall &&
1127                          !(r_ptr->flags2 & RF2_KILL_WALL))
1128                 {
1129                         int i, room = 0;
1130
1131                         /* Count room grids next to player */
1132                         for (i = 0; i < 8; i++)
1133                         {
1134                                 int xx = px + ddx_ddd[i];
1135                                 int yy = py + ddy_ddd[i];
1136
1137                                 if (!in_bounds2(yy, xx)) continue;
1138
1139                                 c_ptr = &cave[yy][xx];
1140
1141                                 /* Check grid */
1142                                 if (monster_can_cross_terrain(c_ptr->feat, r_ptr, 0))
1143                                 {
1144                                         /* One more room grid */
1145                                         room++;
1146                                 }
1147                         }
1148                         if (cave[py][px].info & CAVE_ROOM) room -= 2;
1149                         if (!r_ptr->flags4 && !r_ptr->flags5 && !r_ptr->flags6) room -= 2;
1150
1151                         /* Not in a room and strong player */
1152                         if (room < (8 * (p_ptr->chp + p_ptr->csp)) /
1153                             (p_ptr->mhp + p_ptr->msp))
1154                         {
1155                                 /* Find hiding place */
1156                                 if (find_hiding(m_idx, &y, &x)) done = TRUE;
1157                         }
1158                 }
1159
1160                 /* Monster groups try to surround the player */
1161                 if (!done && (cave[m_ptr->fy][m_ptr->fx].dist < 3))
1162                 {
1163                         int i;
1164
1165                         /* Find an empty square near the player to fill */
1166                         for (i = 0; i < 8; i++)
1167                         {
1168                                 /* Pick squares near player (semi-randomly) */
1169                                 y2 = py + ddy_ddd[(m_idx + i) & 7];
1170                                 x2 = px + ddx_ddd[(m_idx + i) & 7];
1171
1172                                 /* Already there? */
1173                                 if ((m_ptr->fy == y2) && (m_ptr->fx == x2))
1174                                 {
1175                                         /* Attack the player */
1176                                         y2 = py;
1177                                         x2 = px;
1178
1179                                         break;
1180                                 }
1181
1182                                 if (!in_bounds2(y2, x2)) continue;
1183
1184                                 /* Ignore filled grids */
1185                                 if (!monster_can_enter(y2, x2, r_ptr, 0)) continue;
1186
1187                                 /* Try to fill this hole */
1188                                 break;
1189                         }
1190
1191                         /* Extract the new "pseudo-direction" */
1192                         y = m_ptr->fy - y2;
1193                         x = m_ptr->fx - x2;
1194
1195                         /* Done */
1196                         done = TRUE;
1197                 }
1198         }
1199
1200         if (!done)
1201         {
1202                 /* Flow towards the player */
1203                 (void)get_moves_aux(m_idx, &y2, &x2, no_flow);
1204
1205                 /* Extract the "pseudo-direction" */
1206                 y = m_ptr->fy - y2;
1207                 x = m_ptr->fx - x2;
1208
1209                 /* Not done */
1210         }
1211
1212         /* Apply fear if possible and necessary */
1213         if (is_pet(m_ptr) && will_run)
1214         {
1215                 /* XXX XXX Not very "smart" */
1216                 y = (-y), x = (-x);
1217         }
1218         else
1219         {
1220                 if (!done && will_run)
1221                 {
1222                         int tmp_x = (-x);
1223                         int tmp_y = (-y);
1224
1225                         /* Try to find safe place */
1226                         if (find_safety(m_idx, &y, &x))
1227                         {
1228                                 /* Attempt to avoid the player */
1229                                 if (!no_flow)
1230                                 {
1231                                         /* Adjust movement */
1232                                         if (get_fear_moves_aux(m_idx, &y, &x)) done = TRUE;
1233                                 }
1234                         }
1235
1236                         if (!done)
1237                         {
1238                                 /* This is not a very "smart" method XXX XXX */
1239                                 y = tmp_y;
1240                                 x = tmp_x;
1241                         }
1242                 }
1243         }
1244
1245
1246         /* Check for no move */
1247         if (!x && !y) return (FALSE);
1248
1249
1250         /* Extract the "absolute distances" */
1251         ax = ABS(x);
1252         ay = ABS(y);
1253
1254         /* Do something weird */
1255         if (y < 0) move_val += 8;
1256         if (x > 0) move_val += 4;
1257
1258         /* Prevent the diamond maneuvre */
1259         if (ay > (ax << 1)) move_val += 2;
1260         else if (ax > (ay << 1)) move_val++;
1261
1262         /* Extract some directions */
1263         switch (move_val)
1264         {
1265         case 0:
1266                 mm[0] = 9;
1267                 if (ay > ax)
1268                 {
1269                         mm[1] = 8;
1270                         mm[2] = 6;
1271                         mm[3] = 7;
1272                         mm[4] = 3;
1273                 }
1274                 else
1275                 {
1276                         mm[1] = 6;
1277                         mm[2] = 8;
1278                         mm[3] = 3;
1279                         mm[4] = 7;
1280                 }
1281                 break;
1282         case 1:
1283         case 9:
1284                 mm[0] = 6;
1285                 if (y < 0)
1286                 {
1287                         mm[1] = 3;
1288                         mm[2] = 9;
1289                         mm[3] = 2;
1290                         mm[4] = 8;
1291                 }
1292                 else
1293                 {
1294                         mm[1] = 9;
1295                         mm[2] = 3;
1296                         mm[3] = 8;
1297                         mm[4] = 2;
1298                 }
1299                 break;
1300         case 2:
1301         case 6:
1302                 mm[0] = 8;
1303                 if (x < 0)
1304                 {
1305                         mm[1] = 9;
1306                         mm[2] = 7;
1307                         mm[3] = 6;
1308                         mm[4] = 4;
1309                 }
1310                 else
1311                 {
1312                         mm[1] = 7;
1313                         mm[2] = 9;
1314                         mm[3] = 4;
1315                         mm[4] = 6;
1316                 }
1317                 break;
1318         case 4:
1319                 mm[0] = 7;
1320                 if (ay > ax)
1321                 {
1322                         mm[1] = 8;
1323                         mm[2] = 4;
1324                         mm[3] = 9;
1325                         mm[4] = 1;
1326                 }
1327                 else
1328                 {
1329                         mm[1] = 4;
1330                         mm[2] = 8;
1331                         mm[3] = 1;
1332                         mm[4] = 9;
1333                 }
1334                 break;
1335         case 5:
1336         case 13:
1337                 mm[0] = 4;
1338                 if (y < 0)
1339                 {
1340                         mm[1] = 1;
1341                         mm[2] = 7;
1342                         mm[3] = 2;
1343                         mm[4] = 8;
1344                 }
1345                 else
1346                 {
1347                         mm[1] = 7;
1348                         mm[2] = 1;
1349                         mm[3] = 8;
1350                         mm[4] = 2;
1351                 }
1352                 break;
1353         case 8:
1354                 mm[0] = 3;
1355                 if (ay > ax)
1356                 {
1357                         mm[1] = 2;
1358                         mm[2] = 6;
1359                         mm[3] = 1;
1360                         mm[4] = 9;
1361                 }
1362                 else
1363                 {
1364                         mm[1] = 6;
1365                         mm[2] = 2;
1366                         mm[3] = 9;
1367                         mm[4] = 1;
1368                 }
1369                 break;
1370         case 10:
1371         case 14:
1372                 mm[0] = 2;
1373                 if (x < 0)
1374                 {
1375                         mm[1] = 3;
1376                         mm[2] = 1;
1377                         mm[3] = 6;
1378                         mm[4] = 4;
1379                 }
1380                 else
1381                 {
1382                         mm[1] = 1;
1383                         mm[2] = 3;
1384                         mm[3] = 4;
1385                         mm[4] = 6;
1386                 }
1387                 break;
1388         case 12:
1389                 mm[0] = 1;
1390                 if (ay > ax)
1391                 {
1392                         mm[1] = 2;
1393                         mm[2] = 4;
1394                         mm[3] = 3;
1395                         mm[4] = 7;
1396                 }
1397                 else
1398                 {
1399                         mm[1] = 4;
1400                         mm[2] = 2;
1401                         mm[3] = 7;
1402                         mm[4] = 3;
1403                 }
1404                 break;
1405         }
1406
1407         /* Wants to move... */
1408         return (TRUE);
1409 }
1410
1411
1412 static int check_hit2(int power, int level, int ac, int stun)
1413 {
1414         int i, k;
1415
1416         /* Percentile dice */
1417         k = randint0(100);
1418
1419         if (stun && one_in_(2)) return FALSE;
1420
1421         /* Hack -- Always miss or hit */
1422         if (k < 10) return (k < 5);
1423
1424         /* Calculate the "attack quality" */
1425         i = (power + (level * 3));
1426
1427         /* Power and Level compete against Armor */
1428         if ((i > 0) && (randint1(i) > ((ac * 3) / 4))) return (TRUE);
1429
1430         /* Assume miss */
1431         return (FALSE);
1432 }
1433
1434
1435 /* Monster attacks monster */
1436 static bool monst_attack_monst(int m_idx, int t_idx)
1437 {
1438         monster_type    *m_ptr = &m_list[m_idx];
1439         monster_type    *t_ptr = &m_list[t_idx];
1440
1441         monster_race    *r_ptr = &r_info[m_ptr->r_idx];
1442         monster_race    *tr_ptr = &r_info[t_ptr->r_idx];
1443
1444         int             ap_cnt;
1445         int             ac, rlev, pt;
1446         char            m_name[80], t_name[80];
1447         char            temp[80];
1448         bool            blinked, heal_effect;
1449         bool            explode = FALSE, touched = FALSE, fear = FALSE;
1450         int             y_saver = t_ptr->fy;
1451         int             x_saver = t_ptr->fx;
1452
1453         bool see_m = is_seen(m_ptr);
1454         bool see_t = is_seen(t_ptr);
1455         bool see_either = see_m || see_t;
1456
1457         /* Can the player be aware of this attack? */
1458         bool known = (m_ptr->cdis <= MAX_SIGHT) || (t_ptr->cdis <= MAX_SIGHT);
1459         bool do_silly_attack = (one_in_(2) && p_ptr->image);
1460
1461         /* Cannot attack self */
1462         if (m_idx == t_idx) return FALSE;
1463
1464         /* Not allowed to attack */
1465         if (r_ptr->flags1 & RF1_NEVER_BLOW) return FALSE;
1466
1467         if (d_info[dungeon_type].flags1 & DF1_NO_MELEE) return (FALSE);
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 (method == RBM_SHOOT) continue;
1517
1518                 /* Extract the attack "power" */
1519                 power = mbe_info[effect].power;
1520
1521                 /* Monster hits */
1522                 if (!effect || check_hit2(power, rlev, ac, m_ptr->stunned))
1523                 {
1524                         /* Wake it up */
1525                         t_ptr->csleep = 0;
1526
1527                         if (tr_ptr->flags7 & RF7_HAS_LD_MASK) p_ptr->update |= (PU_MON_LITE);
1528
1529                         /* Describe the attack method */
1530                         switch (method)
1531                         {
1532                         case RBM_HIT:
1533                                 {
1534 #ifdef JP
1535 act = "%s¤ò²¥¤Ã¤¿¡£";
1536 #else
1537                                         act = "hits %s.";
1538 #endif
1539
1540                                         touched = TRUE;
1541                                         break;
1542                                 }
1543
1544                         case RBM_TOUCH:
1545                                 {
1546 #ifdef JP
1547 act = "%s¤ò¿¨¤Ã¤¿¡£";
1548 #else
1549                                         act = "touches %s.";
1550 #endif
1551
1552                                         touched = TRUE;
1553                                         break;
1554                                 }
1555
1556                         case RBM_PUNCH:
1557                                 {
1558 #ifdef JP
1559 act = "%s¤ò¥Ñ¥ó¥Á¤·¤¿¡£";
1560 #else
1561                                         act = "punches %s.";
1562 #endif
1563
1564                                         touched = TRUE;
1565                                         break;
1566                                 }
1567
1568                         case RBM_KICK:
1569                                 {
1570 #ifdef JP
1571 act = "%s¤ò½³¤Ã¤¿¡£";
1572 #else
1573                                         act = "kicks %s.";
1574 #endif
1575
1576                                         touched = TRUE;
1577                                         break;
1578                                 }
1579
1580                         case RBM_CLAW:
1581                                 {
1582 #ifdef JP
1583 act = "%s¤ò¤Ò¤Ã¤«¤¤¤¿¡£";
1584 #else
1585                                         act = "claws %s.";
1586 #endif
1587
1588                                         touched = TRUE;
1589                                         break;
1590                                 }
1591
1592                         case RBM_BITE:
1593                                 {
1594 #ifdef JP
1595 act = "%s¤ò³ú¤ó¤À¡£";
1596 #else
1597                                         act = "bites %s.";
1598 #endif
1599
1600                                         touched = TRUE;
1601                                         break;
1602                                 }
1603
1604                         case RBM_STING:
1605                                 {
1606 #ifdef JP
1607 act = "%s¤ò»É¤·¤¿¡£";
1608 #else
1609                                         act = "stings %s.";
1610 #endif
1611
1612                                         touched = TRUE;
1613                                         break;
1614                                 }
1615
1616                         case RBM_SLASH:
1617                                 {
1618 #ifdef JP
1619 act = "%s¤ò»Â¤Ã¤¿¡£";
1620 #else
1621                                         act = "slashes %s.";
1622 #endif
1623
1624                                         break;
1625                                 }
1626
1627                         case RBM_BUTT:
1628                                 {
1629 #ifdef JP
1630 act = "%s¤ò³Ñ¤ÇÆÍ¤¤¤¿¡£";
1631 #else
1632                                         act = "butts %s.";
1633 #endif
1634
1635                                         touched = TRUE;
1636                                         break;
1637                                 }
1638
1639                         case RBM_CRUSH:
1640                                 {
1641 #ifdef JP
1642 act = "%s¤ËÂÎÅö¤ê¤·¤¿¡£";
1643 #else
1644                                         act = "crushes %s.";
1645 #endif
1646
1647                                         touched = TRUE;
1648                                         break;
1649                                 }
1650
1651                         case RBM_ENGULF:
1652                                 {
1653 #ifdef JP
1654 act = "%s¤ò°û¤ß¹þ¤ó¤À¡£";
1655 #else
1656                                         act = "engulfs %s.";
1657 #endif
1658
1659                                         touched = TRUE;
1660                                         break;
1661                                 }
1662
1663                         case RBM_CHARGE:
1664                                 {
1665 #ifdef JP
1666 act = "%s¤ËÀÁµá½ñ¤ò¤è¤³¤·¤¿¡£";
1667 #else
1668                                         act = "charges %s.";
1669 #endif
1670
1671                                         touched = TRUE;
1672                                         break;
1673                                 }
1674
1675                         case RBM_CRAWL:
1676                                 {
1677 #ifdef JP
1678 act = "%s¤ÎÂÎ¤Î¾å¤òÇç¤¤²ó¤Ã¤¿¡£";
1679 #else
1680                                         act = "crawls on %s.";
1681 #endif
1682
1683                                         touched = TRUE;
1684                                         break;
1685                                 }
1686
1687                         case RBM_DROOL:
1688                                 {
1689 #ifdef JP
1690 act = "%s¤Ë¤è¤À¤ì¤ò¤¿¤é¤·¤¿¡£";
1691 #else
1692                                         act = "drools on %s.";
1693 #endif
1694
1695                                         touched = FALSE;
1696                                         break;
1697                                 }
1698
1699                         case RBM_SPIT:
1700                                 {
1701 #ifdef JP
1702 act = "%s¤ËÂÃ¤òÅÇ¤¤¤¿¡£";
1703 #else
1704                                         act = "spits on %s.";
1705 #endif
1706
1707                                         touched = FALSE;
1708                                         break;
1709                                 }
1710
1711                         case RBM_EXPLODE:
1712                                 {
1713                                         if (see_either) disturb(1, 0);
1714 #ifdef JP
1715 act = "ÇúÈ¯¤·¤¿¡£";
1716 #else
1717                                         act = "explodes.";
1718 #endif
1719
1720                                         explode = TRUE;
1721                                         touched = FALSE;
1722                                         break;
1723                                 }
1724
1725                         case RBM_GAZE:
1726                                 {
1727 #ifdef JP
1728 act = "%s¤ò¤Ë¤é¤ó¤À¡£";
1729 #else
1730                                         act = "gazes at %s.";
1731 #endif
1732
1733                                         touched = FALSE;
1734                                         break;
1735                                 }
1736
1737                         case RBM_WAIL:
1738                                 {
1739 #ifdef JP
1740 act = "%s¤Ëµã¤¤Ä¤¤¤¿¡£";
1741 #else
1742                                         act = "wails at %s.";
1743 #endif
1744
1745                                         touched = FALSE;
1746                                         break;
1747                                 }
1748
1749                         case RBM_SPORE:
1750                                 {
1751 #ifdef JP
1752 act = "%s¤ËË¦»Ò¤òÈô¤Ð¤·¤¿¡£";
1753 #else
1754                                         act = "releases spores at %s.";
1755 #endif
1756
1757                                         touched = FALSE;
1758                                         break;
1759                                 }
1760
1761                         case RBM_XXX4:
1762                                 {
1763 #ifdef JP
1764 act = "%s¤ËXXX4¤òÈô¤Ð¤·¤¿¡£";
1765 #else
1766                                         act = "projects XXX4's at %s.";
1767 #endif
1768
1769                                         touched = FALSE;
1770                                         break;
1771                                 }
1772
1773                         case RBM_BEG:
1774                                 {
1775 #ifdef JP
1776 act = "%s¤Ë¶â¤ò¤»¤¬¤ó¤À¡£";
1777 #else
1778                                         act = "begs %s for money.";
1779 #endif
1780
1781                                         touched = FALSE;
1782                                         break;
1783                                 }
1784
1785                         case RBM_INSULT:
1786                                 {
1787 #ifdef JP
1788 act = "%s¤òÉî¿«¤·¤¿¡£";
1789 #else
1790                                         act = "insults %s.";
1791 #endif
1792
1793                                         touched = FALSE;
1794                                         break;
1795                                 }
1796
1797                         case RBM_MOAN:
1798                                 {
1799 #ifdef JP
1800 act = "%s¤Ë¤à¤«¤Ã¤Æ¤¦¤á¤¤¤¿¡£";
1801 #else
1802                                         act = "moans at %s.";
1803 #endif
1804
1805                                         touched = FALSE;
1806                                         break;
1807                                 }
1808
1809                         case RBM_SHOW:
1810                                 {
1811 #ifdef JP
1812 act = "%s¤Ë¤à¤«¤Ã¤Æ²Î¤Ã¤¿¡£";
1813 #else
1814                                         act = "sings to %s.";
1815 #endif
1816
1817                                         touched = FALSE;
1818                                         break;
1819                                 }
1820                         }
1821
1822                         /* Message */
1823                         if (act && see_either)
1824                         {
1825 #ifdef JP
1826                                 if (do_silly_attack) act = silly_attacks2[randint0(MAX_SILLY_ATTACK)];
1827                                 strfmt(temp, act, t_name);
1828                                 msg_format("%^s¤Ï%s", m_name, temp);
1829 #else
1830                                 if (do_silly_attack)
1831                                 {
1832                                         act = silly_attacks[randint0(MAX_SILLY_ATTACK)];
1833                                         strfmt(temp, "%s %s.", act, t_name);
1834                                 }
1835                                 else strfmt(temp, act, t_name);
1836                                 msg_format("%^s %s", m_name, temp);
1837 #endif
1838                         }
1839
1840                         /* Hack -- assume all attacks are obvious */
1841                         obvious = TRUE;
1842
1843                         /* Roll out the damage */
1844                         damage = damroll(d_dice, d_side);
1845
1846                         /* Assume no healing effect */
1847                         heal_effect = FALSE;
1848
1849                         pt = GF_MISSILE;
1850
1851                         /* Apply appropriate damage */
1852                         switch (effect)
1853                         {
1854                         case 0:
1855                                 {
1856                                         damage = 0;
1857                                         pt = 0;
1858                                         break;
1859                                 }
1860
1861                         case RBE_SUPERHURT:
1862                                 {
1863                                         if ((randint1(rlev*2+250) > (ac+200)) || one_in_(13)) {
1864                                                 int tmp_damage = damage-(damage*((ac < 150) ? ac : 150)/250);
1865                                                 damage = MAX(damage, tmp_damage*2);
1866                                                 break;
1867                                         }
1868                                 }
1869                         case RBE_HURT:
1870                                 {
1871                                         damage -= (damage * ((ac < 150) ? ac : 150) / 250);
1872                                         break;
1873                                 }
1874
1875                         case RBE_POISON:
1876                         case RBE_DISEASE:
1877                                 {
1878                                         pt = GF_POIS;
1879                                         break;
1880                                 }
1881
1882                         case RBE_UN_BONUS:
1883                         case RBE_UN_POWER:
1884                                 {
1885                                         pt = GF_DISENCHANT;
1886                                         break;
1887                                 }
1888
1889                         case RBE_EAT_FOOD:
1890                         case RBE_EAT_LITE:
1891                         case RBE_DR_MANA:
1892                                 {
1893                                         pt = damage = 0;
1894                                         break;
1895                                 }
1896
1897                         case RBE_EAT_ITEM:
1898                         case RBE_EAT_GOLD:
1899                                 {
1900                                         pt = damage = 0;
1901                                         if ((p_ptr->riding != m_idx) && one_in_(2)) blinked = TRUE;
1902                                         break;
1903                                 }
1904
1905                         case RBE_ACID:
1906                                 {
1907                                         pt = GF_ACID;
1908                                         break;
1909                                 }
1910
1911                         case RBE_ELEC:
1912                                 {
1913                                         pt = GF_ELEC;
1914                                         break;
1915                                 }
1916
1917                         case RBE_FIRE:
1918                                 {
1919                                         pt = GF_FIRE;
1920                                         break;
1921                                 }
1922
1923                         case RBE_COLD:
1924                                 {
1925                                         pt = GF_COLD;
1926                                         break;
1927                                 }
1928
1929                         case RBE_BLIND:
1930                                 {
1931                                         break;
1932                                 }
1933
1934                         case RBE_CONFUSE:
1935                                 {
1936                                         pt = GF_CONFUSION;
1937                                         break;
1938                                 }
1939
1940                         case RBE_TERRIFY:
1941                                 {
1942                                         pt = GF_TURN_ALL;
1943                                         break;
1944                                 }
1945
1946                         case RBE_PARALYZE:
1947                                 {
1948                                         pt = GF_OLD_SLEEP; /* sort of close... */
1949                                         break;
1950                                 }
1951
1952                         case RBE_LOSE_STR:
1953                         case RBE_LOSE_INT:
1954                         case RBE_LOSE_WIS:
1955                         case RBE_LOSE_DEX:
1956                         case RBE_LOSE_CON:
1957                         case RBE_LOSE_CHR:
1958                         case RBE_LOSE_ALL:
1959                                 {
1960                                         break;
1961                                 }
1962                         case RBE_SHATTER:
1963                                 {
1964                                         damage -= (damage * ((ac < 150) ? ac : 150) / 250);
1965                                         if (damage > 23)
1966                                         {
1967                                                 earthquake(m_ptr->fy, m_ptr->fx, 8);
1968                                         }
1969                                         break;
1970                                 }
1971                         case RBE_EXP_10:
1972                         case RBE_EXP_20:
1973                         case RBE_EXP_40:
1974                         case RBE_EXP_80:
1975                                 {
1976                                         pt = GF_NETHER;
1977                                         break;
1978                                 }
1979                         case RBE_TIME:
1980                                 {
1981                                         pt = GF_TIME;
1982                                         break;
1983                                 }
1984                         case RBE_EXP_VAMP:
1985                                 {
1986                                         pt = GF_OLD_DRAIN;
1987                                         heal_effect = TRUE;
1988                                         break;
1989                                 }
1990
1991                         default:
1992                                 {
1993                                         pt = 0;
1994                                         break;
1995                                 }
1996                         }
1997
1998                         if (pt)
1999                         {
2000                                 /* Do damage if not exploding */
2001                                 if (!explode)
2002                                 {
2003                                         project(m_idx, 0, t_ptr->fy, t_ptr->fx,
2004                                                 (pt == GF_OLD_SLEEP ? r_ptr->level : damage), pt, PROJECT_KILL | PROJECT_STOP | PROJECT_AIMED, -1);
2005                                 }
2006
2007                                 if (heal_effect)
2008                                 {
2009                                         if ((monster_living(tr_ptr)) && (damage > 2))
2010                                         {
2011                                                 bool did_heal = FALSE;
2012
2013                                                 if (m_ptr->hp < m_ptr->maxhp) did_heal = TRUE;
2014
2015                                                 /* Heal */
2016                                                 m_ptr->hp += damroll(4, damage / 6);
2017                                                 if (m_ptr->hp > m_ptr->maxhp) m_ptr->hp = m_ptr->maxhp;
2018
2019                                                 /* Redraw (later) if needed */
2020                                                 if (p_ptr->health_who == m_idx) p_ptr->redraw |= (PR_HEALTH);
2021                                                 if (p_ptr->riding == m_idx) p_ptr->redraw |= (PR_UHEALTH);
2022
2023                                                 /* Special message */
2024                                                 if (see_m && did_heal)
2025                                                 {
2026 #ifdef JP
2027 msg_format("%s¤ÏÂÎÎÏ¤ò²óÉü¤·¤¿¤è¤¦¤À¡£", m_name);
2028 #else
2029                                                         msg_format("%^s appears healthier.", m_name);
2030 #endif
2031
2032                                                 }
2033                                         }
2034                                 }
2035
2036                                 if (touched)
2037                                 {
2038                                         /* Aura fire */
2039                                         if ((tr_ptr->flags2 & RF2_AURA_FIRE) && m_ptr->r_idx)
2040                                         {
2041                                                 if (!(r_ptr->flagsr & RFR_EFF_IM_FIRE_MASK))
2042                                                 {
2043                                                         if (see_either)
2044                                                         {
2045 #ifdef JP
2046                                                                 msg_format("%^s¤ÏÆÍÁ³Ç®¤¯¤Ê¤Ã¤¿¡ª", m_name);
2047 #else
2048                                                                 msg_format("%^s is suddenly very hot!", m_name);
2049 #endif
2050                                                         }
2051                                                         if (m_ptr->ml && is_original_ap_and_seen(t_ptr)) tr_ptr->r_flags2 |= RF2_AURA_FIRE;
2052                                                         project(t_idx, 0, m_ptr->fy, m_ptr->fx,
2053                                                                 damroll (1 + ((tr_ptr->level) / 26),
2054                                                                 1 + ((tr_ptr->level) / 17)),
2055                                                                 GF_FIRE, PROJECT_KILL | PROJECT_STOP | PROJECT_AIMED, -1);
2056                                                 }
2057                                                 else
2058                                                 {
2059                                                         if (is_original_ap_and_seen(m_ptr)) r_ptr->r_flagsr |= (r_ptr->flagsr & RFR_EFF_IM_FIRE_MASK);
2060                                                 }
2061                                         }
2062
2063                                         /* Aura cold */
2064                                         if ((tr_ptr->flags3 & RF3_AURA_COLD) && m_ptr->r_idx)
2065                                         {
2066                                                 if (!(r_ptr->flagsr & RFR_EFF_IM_COLD_MASK))
2067                                                 {
2068                                                         if (see_either)
2069                                                         {
2070 #ifdef JP
2071                                                                 msg_format("%^s¤ÏÆÍÁ³´¨¤¯¤Ê¤Ã¤¿¡ª", m_name);
2072 #else
2073                                                                 msg_format("%^s is suddenly very cold!", m_name);
2074 #endif
2075                                                         }
2076                                                         if (m_ptr->ml && is_original_ap_and_seen(t_ptr)) tr_ptr->r_flags3 |= RF3_AURA_COLD;
2077                                                         project(t_idx, 0, m_ptr->fy, m_ptr->fx,
2078                                                                 damroll (1 + ((tr_ptr->level) / 26),
2079                                                                 1 + ((tr_ptr->level) / 17)),
2080                                                                 GF_COLD, PROJECT_KILL | PROJECT_STOP | PROJECT_AIMED, -1);
2081                                                 }
2082                                                 else
2083                                                 {
2084                                                         if (is_original_ap_and_seen(m_ptr)) r_ptr->r_flagsr |= (r_ptr->flagsr & RFR_EFF_IM_COLD_MASK);
2085                                                 }
2086                                         }
2087
2088                                         /* Aura elec */
2089                                         if ((tr_ptr->flags2 & RF2_AURA_ELEC) && m_ptr->r_idx)
2090                                         {
2091                                                 if (!(r_ptr->flagsr & RFR_EFF_IM_ELEC_MASK))
2092                                                 {
2093                                                         if (see_either)
2094                                                         {
2095 #ifdef JP
2096                                                                 msg_format("%^s¤ÏÅÅ·â¤ò¿©¤é¤Ã¤¿¡ª", m_name);
2097 #else
2098                                                                 msg_format("%^s gets zapped!", m_name);
2099 #endif
2100                                                         }
2101                                                         if (m_ptr->ml && is_original_ap_and_seen(t_ptr)) tr_ptr->r_flags2 |= RF2_AURA_ELEC;
2102                                                         project(t_idx, 0, m_ptr->fy, m_ptr->fx,
2103                                                                 damroll (1 + ((tr_ptr->level) / 26),
2104                                                                 1 + ((tr_ptr->level) / 17)),
2105                                                                 GF_ELEC, PROJECT_KILL | PROJECT_STOP | PROJECT_AIMED, -1);
2106                                                 }
2107                                                 else
2108                                                 {
2109                                                         if (is_original_ap_and_seen(m_ptr)) r_ptr->r_flagsr |= (r_ptr->flagsr & RFR_EFF_IM_ELEC_MASK);
2110                                                 }
2111                                         }
2112                                 }
2113                         }
2114                 }
2115
2116                 /* Monster missed player */
2117                 else
2118                 {
2119                         /* Analyze failed attacks */
2120                         switch (method)
2121                         {
2122                         case RBM_HIT:
2123                         case RBM_TOUCH:
2124                         case RBM_PUNCH:
2125                         case RBM_KICK:
2126                         case RBM_CLAW:
2127                         case RBM_BITE:
2128                         case RBM_STING:
2129                         case RBM_SLASH:
2130                         case RBM_BUTT:
2131                         case RBM_CRUSH:
2132                         case RBM_ENGULF:
2133                         case RBM_CHARGE:
2134                                 {
2135                                         /* Wake it up */
2136                                         t_ptr->csleep = 0;
2137
2138                                         if (tr_ptr->flags7 & RF7_HAS_LD_MASK) p_ptr->update |= (PU_MON_LITE);
2139
2140                                         /* Visible monsters */
2141                                         if (see_m)
2142                                         {
2143                                                 /* Message */
2144 #ifdef JP
2145 msg_format("%s¤Ï%^s¤Î¹¶·â¤ò¤«¤ï¤·¤¿¡£", t_name,m_name);
2146 #else
2147                                                 msg_format("%^s misses %s.", m_name, t_name);
2148 #endif
2149
2150                                         }
2151
2152                                         break;
2153                                 }
2154                         }
2155                 }
2156
2157
2158                 /* Analyze "visible" monsters only */
2159                 if (m_ptr->ml && !do_silly_attack)
2160                 {
2161                         /* Count "obvious" attacks (and ones that cause damage) */
2162                         if (obvious || damage || (r_ptr->r_blows[ap_cnt] > 10))
2163                         {
2164                                 /* Count attacks of this type */
2165                                 if (r_ptr->r_blows[ap_cnt] < MAX_UCHAR)
2166                                 {
2167                                         r_ptr->r_blows[ap_cnt]++;
2168                                 }
2169                         }
2170                 }
2171         }
2172
2173         if (explode)
2174         {
2175                 sound(SOUND_EXPLODE);
2176
2177                 /* Cancel Invulnerability */
2178                 if (m_ptr->invulner) m_ptr->invulner = 0;
2179
2180 #ifdef JP
2181                 mon_take_hit_mon(m_idx, m_ptr->hp + 1, &fear, "¤ÏÇúÈ¯¤·¤ÆÊ´¡¹¤Ë¤Ê¤Ã¤¿¡£", m_idx);
2182 #else
2183                 mon_take_hit_mon(m_idx, m_ptr->hp + 1, &fear, " explodes into tiny shreds.", m_idx);
2184 #endif
2185
2186                 blinked = FALSE;
2187         }
2188
2189         /* Blink away */
2190         if (blinked && m_ptr->r_idx)
2191         {
2192                 if (see_m)
2193                 {
2194 #ifdef JP
2195                         msg_print("Å¥ËÀ¤Ï¾Ð¤Ã¤ÆÆ¨¤²¤¿¡ª");
2196 #else
2197                         msg_print("The thief flees laughing!");
2198 #endif
2199                 }
2200                 else if (known)
2201                 {
2202                         mon_fight = TRUE;
2203                 }
2204
2205                 teleport_away(m_idx, MAX_SIGHT * 2 + 5, FALSE, FALSE);
2206         }
2207
2208         return TRUE;
2209 }
2210
2211
2212 /*
2213  * Process a monster
2214  *
2215  * The monster is known to be within 100 grids of the player
2216  *
2217  * In several cases, we directly update the monster lore
2218  *
2219  * Note that a monster is only allowed to "reproduce" if there
2220  * are a limited number of "reproducing" monsters on the current
2221  * level.  This should prevent the level from being "swamped" by
2222  * reproducing monsters.  It also allows a large mass of mice to
2223  * prevent a louse from multiplying, but this is a small price to
2224  * pay for a simple multiplication method.
2225  *
2226  * XXX Monster fear is slightly odd, in particular, monsters will
2227  * fixate on opening a door even if they cannot open it.  Actually,
2228  * the same thing happens to normal monsters when they hit a door
2229  *
2230  * XXX XXX XXX In addition, monsters which *cannot* open or bash
2231  * down a door will still stand there trying to open it...
2232  *
2233  * XXX Technically, need to check for monster in the way
2234  * combined with that monster being in a wall (or door?)
2235  *
2236  * A "direction" of "5" means "pick a random direction".
2237  */
2238 static void process_monster(int m_idx)
2239 {
2240         monster_type    *m_ptr = &m_list[m_idx];
2241         monster_race    *r_ptr = &r_info[m_ptr->r_idx];
2242         monster_race    *ap_r_ptr = &r_info[m_ptr->ap_r_idx];
2243
2244         int             i, d, oy, ox, ny, nx;
2245
2246         int             mm[8];
2247
2248         cave_type       *c_ptr;
2249         feature_type    *f_ptr;
2250
2251         monster_type    *y_ptr;
2252
2253         bool            do_turn;
2254         bool            do_move;
2255         bool            do_view;
2256
2257         bool            did_open_door;
2258         bool            did_bash_door;
2259         bool            did_take_item;
2260         bool            did_kill_item;
2261         bool            did_move_body;
2262         bool            did_pass_wall;
2263         bool            did_kill_wall;
2264         bool            gets_angry = FALSE;
2265         bool            can_cross;
2266         bool            aware = TRUE;
2267
2268         bool            fear;
2269
2270         bool            is_riding_mon = (m_idx == p_ptr->riding);
2271
2272         bool            see_m = is_seen(m_ptr);
2273
2274         if (is_riding_mon && !(r_ptr->flags7 & RF7_RIDING))
2275         {
2276                 if (rakuba(0, TRUE))
2277                 {
2278 #ifdef JP
2279                         msg_print("ÃÏÌÌ¤ËÍî¤È¤µ¤ì¤¿¡£");
2280 #else
2281                         char m_name[80];
2282                         monster_desc(m_name, &m_list[p_ptr->riding], 0);
2283                         msg_format("You have fallen from %s.", m_name);
2284 #endif
2285                 }
2286         }
2287
2288         if ((m_ptr->mflag2 & MFLAG2_CHAMELEON) && one_in_(13) && !m_ptr->csleep)
2289         {
2290                 choose_new_monster(m_idx, FALSE, 0);
2291                 r_ptr = &r_info[m_ptr->r_idx];
2292         }
2293
2294         /* Players hidden in shadow are almost imperceptable. -LM- */
2295         if (p_ptr->special_defense & NINJA_S_STEALTH)
2296         {
2297                 int tmp = p_ptr->lev*6+(p_ptr->skill_stl+10)*4;
2298                 if (p_ptr->monlite) tmp /= 3;
2299                 if (p_ptr->cursed & TRC_AGGRAVATE) tmp /= 2;
2300                 if (r_ptr->level > (p_ptr->lev*p_ptr->lev/20+10)) tmp /= 3;
2301                 /* Low-level monsters will find it difficult to locate the player. */
2302                 if (randint0(tmp) > (r_ptr->level+20)) aware = FALSE;
2303         }
2304
2305         /* Are there its parent? */
2306         if (m_ptr->parent_m_idx && !m_list[m_ptr->parent_m_idx].r_idx)
2307         {
2308                 /* Its parent have gone, it also goes away. */
2309
2310                 if (see_m)
2311                 {
2312                         char m_name[80];
2313
2314                         /* Acquire the monster name */
2315                         monster_desc(m_name, m_ptr, 0);
2316
2317 #ifdef JP
2318                         msg_format("%s¤Ï¾Ã¤¨µî¤Ã¤¿¡ª", m_name);
2319 #else
2320                         msg_format("%^s disappears!", m_name);
2321 #endif
2322                 }
2323
2324                 /* Delete the monster */
2325                 delete_monster_idx(m_idx);
2326
2327                 return;
2328         }
2329
2330         /* Quantum monsters are odd */
2331         if (r_ptr->flags2 & (RF2_QUANTUM))
2332         {
2333                 /* Sometimes skip move */
2334                 if (!randint0(2)) return;
2335
2336                 /* Sometimes die */
2337                 if (!randint0((m_idx % 100) + 10) && !(r_ptr->flags1 & RF1_QUESTOR))
2338                 {
2339                         bool sad = FALSE;
2340
2341                         if (is_pet(m_ptr) && !(m_ptr->ml))
2342                                 sad = TRUE;
2343
2344                         if (see_m)
2345                         {
2346                                 char m_name[80];
2347
2348                                 /* Acquire the monster name */
2349                                 monster_desc(m_name, m_ptr, 0);
2350
2351                                 /* Oops */
2352 #ifdef JP
2353                                 msg_format("%s¤Ï¾Ã¤¨µî¤Ã¤¿¡ª", m_name);
2354 #else
2355                                 msg_format("%^s disappears!", m_name);
2356 #endif
2357                         }
2358
2359                         /* Generate treasure, etc */
2360                         monster_death(m_idx, FALSE);
2361
2362                         /* Delete the monster */
2363                         delete_monster_idx(m_idx);
2364
2365                         if (sad)
2366                         {
2367 #ifdef JP
2368                                 msg_print("¾¯¤·¤Î´ÖÈá¤·¤¤µ¤Ê¬¤Ë¤Ê¤Ã¤¿¡£");
2369 #else
2370                                 msg_print("You feel sad for a moment.");
2371 #endif
2372                         }
2373
2374                         return;
2375                 }
2376         }
2377
2378         if (m_ptr->r_idx == MON_SHURYUUDAN)
2379 #ifdef JP
2380                 mon_take_hit_mon(m_idx, 1, &fear, "¤ÏÇúÈ¯¤·¤ÆÊ´¡¹¤Ë¤Ê¤Ã¤¿¡£", m_idx);
2381 #else
2382                 mon_take_hit_mon(m_idx, 1, &fear, " explodes into tiny shreds.", m_idx);
2383 #endif
2384
2385         if ((is_pet(m_ptr) || is_friendly(m_ptr)) && ((r_ptr->flags1 & RF1_UNIQUE) || (r_ptr->flags7 & RF7_NAZGUL)) && !p_ptr->inside_battle)
2386         {
2387                 static int riding_pinch = 0;
2388
2389                 if (m_ptr->hp < m_ptr->maxhp/3)
2390                 {
2391                         char m_name[80];
2392                         monster_desc(m_name, m_ptr, 0);
2393
2394                         if (is_riding_mon && riding_pinch < 2)
2395                         {
2396 #ifdef JP
2397                                 msg_format("%s¤Ï½ý¤ÎÄË¤µ¤ÎÍ¾¤ê¤¢¤Ê¤¿¤ÎÂ«Çû¤«¤éÆ¨¤ì¤è¤¦¤È¤·¤Æ¤¤¤ë¡£", m_name);
2398 #else
2399                                 msg_format("%^s seems to be in so much pain, and trying to escape from your restriction.", m_name);
2400 #endif
2401                                 riding_pinch++;
2402                                 disturb(1, 0);
2403                         }
2404                         else
2405                         {
2406                                 if (is_riding_mon)
2407                                 {
2408 #ifdef JP
2409                                         msg_format("%s¤Ï¤¢¤Ê¤¿¤ÎÂ«Çû¤«¤éÃ¦½Ð¤·¤¿¡£", m_name);
2410 #else
2411                                         msg_format("%^s succeeded to escape from your restriction!", m_name);
2412 #endif
2413                                         if (rakuba(-1, FALSE))
2414                                         {
2415 #ifdef JP
2416                                                 msg_print("ÃÏÌÌ¤ËÍî¤È¤µ¤ì¤¿¡£");
2417 #else
2418                                                 msg_print("You have fallen from riding pet.");
2419 #endif
2420                                         }
2421                                 }
2422
2423                                 if (see_m)
2424                                 {
2425                                         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) &&
2426                                             player_has_los_bold(m_ptr->fy, m_ptr->fx) && projectable(m_ptr->fy, m_ptr->fx, py, px))
2427                                         {
2428 #ifdef JP
2429                                                 msg_format("%^s¡Ö¥Ô¥ó¥Á¤À¡ªÂàµÑ¤µ¤»¤Æ¤â¤é¤¦¡ª¡×", m_name);
2430 #else
2431                                                 msg_format("%^s says 'It is the pinch! I will retreat'.", m_name);
2432 #endif
2433                                         }
2434 #ifdef JP
2435                                         msg_format("%^s¤¬¥Æ¥ì¥Ý¡¼¥È¡¦¥ì¥Ù¥ë¤Î´¬Êª¤òÆÉ¤ó¤À¡£", m_name);
2436                                         msg_format("%^s¤¬¾Ã¤¨µî¤Ã¤¿¡£", m_name);
2437 #else
2438                                         msg_format("%^s read a scroll of teleport level.", m_name);
2439                                         msg_format("%^s disappears.", m_name);
2440 #endif
2441                                 }
2442
2443                                 if (is_riding_mon && rakuba(-1, FALSE))
2444                                 {
2445 #ifdef JP
2446                                         msg_print("ÃÏÌÌ¤ËÍî¤È¤µ¤ì¤¿¡£");
2447 #else
2448                                         msg_print("You have fallen from riding pet.");
2449 #endif
2450                                 }
2451
2452                                 /* Check for quest completion */
2453                                 check_quest_completion(m_ptr);
2454
2455                                 delete_monster_idx(m_idx);
2456
2457                                 return;
2458                         }
2459                 }
2460                 else
2461                 {
2462                         /* Reset the counter */
2463                         if (is_riding_mon) riding_pinch = 0;
2464                 }
2465         }
2466
2467         /* Handle "sleep" */
2468         if (m_ptr->csleep)
2469         {
2470                 /* Handle non-aggravation - Still sleeping */
2471                 if (!(p_ptr->cursed & TRC_AGGRAVATE)) return;
2472
2473                 /* Handle aggravation */
2474
2475                 /* Reset sleep counter */
2476                 m_ptr->csleep = 0;
2477
2478                 if (r_ptr->flags7 & RF7_HAS_LD_MASK) p_ptr->update |= (PU_MON_LITE);
2479
2480                 /* Notice the "waking up" */
2481                 if (see_m)
2482                 {
2483                         char m_name[80];
2484
2485                         /* Acquire the monster name */
2486                         monster_desc(m_name, m_ptr, 0);
2487
2488                         /* Dump a message */
2489 #ifdef JP
2490                         msg_format("%^s¤¬ÌÜ¤ò³Ð¤Þ¤·¤¿¡£", m_name);
2491 #else
2492                         msg_format("%^s wakes up.", m_name);
2493 #endif
2494
2495                         /* Redraw the health bar */
2496                         if (p_ptr->health_who == m_idx) p_ptr->redraw |= (PR_HEALTH);
2497                         if (is_riding_mon) p_ptr->redraw |= (PR_UHEALTH);
2498
2499                         /* Hack -- Count the wakings */
2500                         if (r_ptr->r_wake < MAX_UCHAR)
2501                         {
2502                                 r_ptr->r_wake++;
2503                         }
2504                 }
2505         }
2506
2507         /* Handle "stun" */
2508         if (m_ptr->stunned)
2509         {
2510                 /* Sometimes skip move */
2511                 if (one_in_(2)) return;
2512         }
2513
2514         if (is_riding_mon)
2515         {
2516                 p_ptr->update |= (PU_BONUS);
2517         }
2518
2519         /* No one wants to be your friend if you're aggravating */
2520         if (is_friendly(m_ptr) && (p_ptr->cursed & TRC_AGGRAVATE))
2521                 gets_angry = TRUE;
2522
2523         /* Paranoia... no pet uniques outside wizard mode -- TY */
2524         if (is_pet(m_ptr) &&
2525             ((((r_ptr->flags1 & RF1_UNIQUE) || (r_ptr->flags7 & RF7_NAZGUL)) &&
2526               monster_has_hostile_align(NULL, 10, -10, r_ptr))
2527              || (r_ptr->flagsr & RFR_RES_ALL)))
2528         {
2529                 gets_angry = TRUE;
2530         }
2531
2532         if (p_ptr->inside_battle) gets_angry = FALSE;
2533
2534         if (gets_angry)
2535         {
2536                 char m_name[80];
2537                 monster_desc(m_name, m_ptr, 0);
2538 #ifdef JP
2539 msg_format("%^s¤ÏÆÍÁ³Å¨¤Ë¤Þ¤ï¤Ã¤¿¡ª", m_name);
2540 #else
2541                 msg_format("%^s suddenly becomes hostile!", m_name);
2542 #endif
2543
2544                 set_hostile(m_ptr);
2545         }
2546
2547         /* Get the origin */
2548         oy = m_ptr->fy;
2549         ox = m_ptr->fx;
2550
2551
2552         /* Attempt to "multiply" if able and allowed */
2553         if ((r_ptr->flags2 & RF2_MULTIPLY) && (num_repro < MAX_REPRO))
2554         {
2555                 int k, y, x;
2556
2557                 /* Count the adjacent monsters */
2558                 for (k = 0, y = oy - 1; y <= oy + 1; y++)
2559                 {
2560                         for (x = ox - 1; x <= ox + 1; x++)
2561                         {
2562                                 /* Ignore locations off of edge */
2563                                 if (!in_bounds2(y, x)) continue;
2564
2565                                 if (cave[y][x].m_idx) k++;
2566                         }
2567                 }
2568
2569                 /* Hack -- multiply slower in crowded areas */
2570                 if ((k < 4) && (!k || !randint0(k * MON_MULT_ADJ)))
2571                 {
2572                         /* Try to multiply */
2573                         if (multiply_monster(m_idx, FALSE, (is_pet(m_ptr) ? PM_FORCE_PET : 0)))
2574                         {
2575                                 /* Take note if visible */
2576                                 if (m_list[hack_m_idx_ii].ml && is_original_ap_and_seen(m_ptr))
2577                                 {
2578                                         r_ptr->r_flags2 |= (RF2_MULTIPLY);
2579                                 }
2580
2581                                 /* Multiplying takes energy */
2582                                 return;
2583                         }
2584                 }
2585         }
2586
2587
2588         if (r_ptr->flags6 & RF6_SPECIAL)
2589         {
2590                 /* Hack -- Ohmu scatters molds! */
2591                 if (m_ptr->r_idx == MON_OHMU)
2592                 {
2593                         if (!p_ptr->inside_arena && !p_ptr->inside_battle)
2594                         {
2595                                 if (r_ptr->freq_spell && (randint1(100) <= r_ptr->freq_spell))
2596                                 {
2597                                         int  k, count = 0;
2598                                         int  rlev = ((r_ptr->level >= 1) ? r_ptr->level : 1);
2599                                         u32b p_mode = is_pet(m_ptr) ? PM_FORCE_PET : 0L;
2600
2601                                         for (k = 0; k < 6; k++)
2602                                         {
2603                                                 if (summon_specific(m_idx, m_ptr->fy, m_ptr->fx, rlev, SUMMON_BIZARRE1, (PM_ALLOW_GROUP | p_mode)))
2604                                                 {
2605                                                         if (m_list[hack_m_idx_ii].ml) count++;
2606                                                 }
2607                                         }
2608
2609                                         if (count && is_original_ap_and_seen(m_ptr)) r_ptr->r_flags6 |= (RF6_SPECIAL);
2610                                 }
2611                         }
2612                 }
2613         }
2614
2615
2616         if (!p_ptr->inside_battle)
2617         {
2618                 /* Hack! "Cyber" monster makes noise... */
2619                 if (m_ptr->ap_r_idx == MON_CYBER &&
2620                     one_in_(CYBERNOISE) &&
2621                     !m_ptr->ml && (m_ptr->cdis <= MAX_SIGHT))
2622                 {
2623                         if (disturb_minor) disturb(FALSE, FALSE);
2624 #ifdef JP
2625 msg_print("½Å¸ü¤ÊÂ²»¤¬Ê¹¤³¤¨¤¿¡£");
2626 #else
2627                         msg_print("You hear heavy steps.");
2628 #endif
2629
2630                 }
2631
2632                 /* Some monsters can speak */
2633                 if ((ap_r_ptr->flags2 & RF2_CAN_SPEAK) && aware &&
2634                     one_in_(SPEAK_CHANCE) &&
2635                     player_has_los_bold(oy, ox) &&
2636                     projectable(oy, ox, py, px))
2637                 {
2638                         char m_name[80];
2639                         char monmessage[1024];
2640                         cptr filename;
2641
2642                         /* Acquire the monster name/poss */
2643                         if (m_ptr->ml)
2644                                 monster_desc(m_name, m_ptr, 0);
2645                         else
2646 #ifdef JP
2647 strcpy(m_name, "¤½¤ì");
2648 #else
2649                                 strcpy(m_name, "It");
2650 #endif
2651
2652
2653                         /* Select the file for monster quotes */
2654                         if (m_ptr->monfear)
2655 #ifdef JP
2656 filename = "monfear_j.txt";
2657 #else
2658                                 filename = "monfear.txt";
2659 #endif
2660
2661                         else if (is_pet(m_ptr))
2662 #ifdef JP
2663 filename = "monpet_j.txt";
2664 #else
2665                                 filename = "monpet.txt";
2666 #endif
2667
2668                         else if (is_friendly(m_ptr))
2669 #ifdef JP
2670 filename = "monfrien_j.txt";
2671 #else
2672                                 filename = "monfrien.txt";
2673 #endif
2674
2675                         else
2676 #ifdef JP
2677                                 filename = "monspeak_j.txt";
2678 #else
2679                                 filename = "monspeak.txt";
2680 #endif
2681
2682
2683                         /* Get the monster line */
2684                         if (get_rnd_line(filename, m_ptr->ap_r_idx, monmessage) == 0)
2685                         {
2686                                 /* Say something */
2687 #ifdef JP
2688 msg_format("%^s%s", m_name, monmessage);
2689 #else
2690                                 msg_format("%^s %s", m_name, monmessage);
2691 #endif
2692
2693                         }
2694                 }
2695         }
2696
2697         /* Try to cast spell occasionally */
2698         if (r_ptr->freq_spell && randint1(100) <= r_ptr->freq_spell)
2699         {
2700                 bool counterattack = FALSE;
2701
2702                 /* Give priority to counter attack? */
2703                 if (m_ptr->target_y)
2704                 {
2705                         int t_m_idx = cave[m_ptr->target_y][m_ptr->target_x].m_idx;
2706
2707                         /* The monster must be an enemy, and projectable */
2708                         if (t_m_idx &&
2709                             are_enemies(m_ptr, &m_list[t_m_idx]) &&
2710                             projectable(m_ptr->fy, m_ptr->fx, m_ptr->target_y, m_ptr->target_x))
2711                         {
2712                                 counterattack = TRUE;
2713                         }
2714                 }
2715
2716                 if (!counterattack)
2717                 {
2718                         /* Attempt to cast a spell */
2719                         if (aware && make_attack_spell(m_idx)) return;
2720
2721                         /*
2722                          * Attempt to cast a spell at an enemy other than the player
2723                          * (may slow the game a smidgeon, but I haven't noticed.)
2724                          */
2725                         if (monst_spell_monst(m_idx)) return;
2726                 }
2727                 else
2728                 {
2729                         /* Attempt to do counter attack at first */
2730                         if (monst_spell_monst(m_idx)) return;
2731
2732                         if (aware && make_attack_spell(m_idx)) return;
2733                 }
2734         }
2735
2736         /* Hack -- Assume no movement */
2737         mm[0] = mm[1] = mm[2] = mm[3] = 0;
2738         mm[4] = mm[5] = mm[6] = mm[7] = 0;
2739
2740
2741         /* Confused -- 100% random */
2742         if (m_ptr->confused || !aware)
2743         {
2744                 /* Try four "random" directions */
2745                 mm[0] = mm[1] = mm[2] = mm[3] = 5;
2746         }
2747
2748         /* 75% random movement */
2749         else if (((r_ptr->flags1 & (RF1_RAND_50 | RF1_RAND_25)) == (RF1_RAND_50 | RF1_RAND_25)) &&
2750                  (randint0(100) < 75))
2751         {
2752                 /* Memorize flags */
2753                 if (is_original_ap_and_seen(m_ptr)) r_ptr->r_flags1 |= (RF1_RAND_50 | RF1_RAND_25);
2754
2755                 /* Try four "random" directions */
2756                 mm[0] = mm[1] = mm[2] = mm[3] = 5;
2757         }
2758
2759         /* 50% random movement */
2760         else if ((r_ptr->flags1 & RF1_RAND_50) &&
2761                                 (randint0(100) < 50))
2762         {
2763                 /* Memorize flags */
2764                 if (is_original_ap_and_seen(m_ptr)) r_ptr->r_flags1 |= (RF1_RAND_50);
2765
2766                 /* Try four "random" directions */
2767                 mm[0] = mm[1] = mm[2] = mm[3] = 5;
2768         }
2769
2770         /* 25% random movement */
2771         else if ((r_ptr->flags1 & RF1_RAND_25) &&
2772                                 (randint0(100) < 25))
2773         {
2774                 /* Memorize flags */
2775                 if (is_original_ap_and_seen(m_ptr)) r_ptr->r_flags1 |= RF1_RAND_25;
2776
2777                 /* Try four "random" directions */
2778                 mm[0] = mm[1] = mm[2] = mm[3] = 5;
2779         }
2780
2781         /* Can't reach player - find something else to hit */
2782         else if ((r_ptr->flags1 & RF1_NEVER_MOVE) && (m_ptr->cdis > 1))
2783         {
2784                 /* Try four "random" directions */
2785                 mm[0] = mm[1] = mm[2] = mm[3] = 5;
2786
2787                 /* Look for an enemy */
2788 #if 0  /* Hack - Too slow.  Mimic pits are horrible with this on. */
2789                 get_enemy_dir(m_idx, mm);
2790 #endif /* 0 */
2791         }
2792
2793         /* Pets will follow the player */
2794         else if (is_pet(m_ptr))
2795         {
2796                 /* Are we trying to avoid the player? */
2797                 bool avoid = ((p_ptr->pet_follow_distance < 0) &&
2798                                                   (m_ptr->cdis <= (0 - p_ptr->pet_follow_distance)));
2799
2800                 /* Do we want to find the player? */
2801                 bool lonely = (!avoid && (m_ptr->cdis > p_ptr->pet_follow_distance));
2802
2803                 /* Should we find the player if we can't find a monster? */
2804                 bool distant = (m_ptr->cdis > PET_SEEK_DIST);
2805
2806                 /* by default, move randomly */
2807                 mm[0] = mm[1] = mm[2] = mm[3] = 5;
2808
2809                 /* Look for an enemy */
2810                 if (!get_enemy_dir(m_idx, mm))
2811                 {
2812                         /* Find the player if necessary */
2813                         if (avoid || lonely || distant)
2814                         {
2815                                 /* Remember the leash length */
2816                                 int dis = p_ptr->pet_follow_distance;
2817
2818                                 /* Hack -- adjust follow distance temporarily */
2819                                 if (p_ptr->pet_follow_distance > PET_SEEK_DIST)
2820                                 {
2821                                         p_ptr->pet_follow_distance = PET_SEEK_DIST;
2822                                 }
2823
2824                                 /* Find the player */
2825                                 (void)get_moves(m_idx, mm);
2826
2827                                 /* Restore the leash */
2828                                 p_ptr->pet_follow_distance = dis;
2829                         }
2830                 }
2831         }
2832
2833         /* Friendly monster movement */
2834         else if (!is_hostile(m_ptr))
2835         {
2836                 /* by default, move randomly */
2837                 mm[0] = mm[1] = mm[2] = mm[3] = 5;
2838
2839                 /* Look for an enemy */
2840                 get_enemy_dir(m_idx, mm);
2841         }
2842         /* Normal movement */
2843         else
2844         {
2845                 /* Logical moves, may do nothing */
2846                 if (!get_moves(m_idx, mm)) return;
2847         }
2848
2849         /* Assume nothing */
2850         do_turn = FALSE;
2851         do_move = FALSE;
2852         do_view = FALSE;
2853
2854         /* Assume nothing */
2855         did_open_door = FALSE;
2856         did_bash_door = FALSE;
2857         did_take_item = FALSE;
2858         did_kill_item = FALSE;
2859         did_move_body = FALSE;
2860         did_pass_wall = FALSE;
2861         did_kill_wall = FALSE;
2862
2863
2864         /* Take a zero-terminated array of "directions" */
2865         for (i = 0; mm[i]; i++)
2866         {
2867                 /* Get the direction */
2868                 d = mm[i];
2869
2870                 /* Hack -- allow "randomized" motion */
2871                 if (d == 5) d = ddd[randint0(8)];
2872
2873                 /* Get the destination */
2874                 ny = oy + ddy[d];
2875                 nx = ox + ddx[d];
2876
2877                 /* Ignore locations off of edge */
2878                 if (!in_bounds2(ny, nx)) continue;
2879
2880                 /* Access that cave grid */
2881                 c_ptr = &cave[ny][nx];
2882                 f_ptr = &f_info[c_ptr->feat];
2883                 can_cross = monster_can_cross_terrain(c_ptr->feat, r_ptr, is_riding_mon ? CEM_RIDING : 0);
2884
2885                 /* Access that cave grid's contents */
2886                 y_ptr = &m_list[c_ptr->m_idx];
2887
2888                 /* Hack -- player 'in' wall */
2889                 if (player_bold(ny, nx))
2890                 {
2891                         do_move = TRUE;
2892                 }
2893
2894                 else if (c_ptr->m_idx)
2895                 {
2896                         /* Possibly a monster to attack */
2897                         do_move = TRUE;
2898                 }
2899
2900                 /* Floor is open? */
2901                 else if (can_cross)
2902                 {
2903                         /* Go ahead and move */
2904                         do_move = TRUE;
2905
2906                         /* Monster moves through walls (and doors) */
2907                         if ((r_ptr->flags2 & RF2_PASS_WALL) && (!is_riding_mon || p_ptr->pass_wall) &&
2908                             have_flag(f_ptr->flags, FF_CAN_PASS))
2909                         {
2910                                 /* Monster went through a wall */
2911                                 did_pass_wall = TRUE;
2912                         }
2913
2914                         if ((r_ptr->flags2 & RF2_KILL_WALL) && have_flag(f_ptr->flags, FF_TUNNEL) &&
2915                             !have_flag(f_ptr->flags, FF_LOS) && !have_flag(f_ptr->flags, FF_PERMANENT))
2916                         {
2917                                 /* Monster destroyed a wall (later) */
2918                                 did_kill_wall = TRUE;
2919                         }
2920                 }
2921
2922                 /* Monster destroys walls (and doors) */
2923                 else if ((r_ptr->flags2 & RF2_KILL_WALL) && !is_riding_mon &&
2924                          have_flag(f_ptr->flags, FF_TUNNEL) && !have_flag(f_ptr->flags, FF_PERMANENT))
2925                 {
2926                         /* Eat through walls/doors/rubble */
2927                         do_move = TRUE;
2928
2929                         /* Monster destroyed a wall (later) */
2930                         did_kill_wall = TRUE;
2931                 }
2932
2933                 /* Handle doors and secret doors */
2934                 else if (is_closed_door(c_ptr->feat))
2935                 {
2936                         bool may_bash = TRUE;
2937                         feature_type *f_ptr = &f_info[c_ptr->feat];
2938
2939                         /* Assume no move allowed */
2940                         do_move = FALSE;
2941
2942                         /* Creature can open doors. */
2943                         if ((r_ptr->flags2 & RF2_OPEN_DOOR) && have_flag(f_ptr->flags, FF_OPEN) &&
2944                                  (!is_pet(m_ptr) || (p_ptr->pet_extra_flags & PF_OPEN_DOORS)))
2945                         {
2946                                 /* Closed doors */
2947                                 if (!f_ptr->power)
2948                                 {
2949                                         /* The door is open */
2950                                         did_open_door = TRUE;
2951
2952                                         /* Do not bash the door */
2953                                         may_bash = FALSE;
2954
2955                                         /* Take a turn */
2956                                         do_turn = TRUE;
2957                                 }
2958
2959                                 /* Locked doors (not jammed) */
2960                                 else
2961                                 {
2962                                         /* Try to unlock it XXX XXX XXX */
2963                                         if (randint0(m_ptr->hp / 10) > f_ptr->power)
2964                                         {
2965                                                 /* Unlock the door */
2966                                                 cave_alter_feat(ny, nx, FF_DISARM);
2967
2968                                                 /* Do not bash the door */
2969                                                 may_bash = FALSE;
2970
2971                                                 /* Take a turn */
2972                                                 do_turn = TRUE;
2973                                         }
2974                                 }
2975                         }
2976
2977                         /* Stuck doors -- attempt to bash them down if allowed */
2978                         if (may_bash && (r_ptr->flags2 & RF2_BASH_DOOR) && have_flag(f_ptr->flags, FF_BASH) &&
2979                                 (!is_pet(m_ptr) || (p_ptr->pet_extra_flags & PF_OPEN_DOORS)))
2980                         {
2981                                 /* Attempt to Bash XXX XXX XXX */
2982                                 if (randint0(m_ptr->hp / 10) > f_ptr->power)
2983                                 {
2984                                         /* Message */
2985 #ifdef JP
2986                                         msg_print("¥É¥¢¤òÃ¡¤³«¤±¤ë²»¤¬¤·¤¿¡ª");
2987 #else
2988                                         msg_print("You hear a door burst open!");
2989 #endif
2990
2991                                         /* Disturb (sometimes) */
2992                                         if (disturb_minor) disturb(0, 0);
2993
2994                                         /* The door was bashed open */
2995                                         did_bash_door = TRUE;
2996
2997                                         /* Hack -- fall into doorway */
2998                                         do_move = TRUE;
2999                                 }
3000                         }
3001
3002
3003                         /* Deal with doors in the way */
3004                         if (did_open_door || did_bash_door)
3005                         {
3006                                 /* Break down the door */
3007                                 if (did_bash_door && ((randint0(100) < 50) || (feat_state(c_ptr->feat, FF_OPEN) == c_ptr->feat)))
3008                                 {
3009                                         cave_alter_feat(ny, nx, FF_BASH);
3010                                 }
3011
3012                                 /* Open the door */
3013                                 else
3014                                 {
3015                                         cave_alter_feat(ny, nx, FF_OPEN);
3016                                 }
3017
3018                                 /* Handle viewable doors */
3019                                 if (player_has_los_bold(ny, nx)) do_view = TRUE;
3020                         }
3021                 }
3022
3023                 /* Hack -- check for Glyph of Warding */
3024                 if (do_move && is_glyph_grid(c_ptr) &&
3025                     !((r_ptr->flags1 & RF1_NEVER_BLOW) && player_bold(ny, nx)))
3026                 {
3027                         /* Assume no move allowed */
3028                         do_move = FALSE;
3029
3030                         /* Break the ward */
3031                         if (!is_pet(m_ptr) && (randint1(BREAK_GLYPH) < r_ptr->level))
3032                         {
3033                                 /* Describe observable breakage */
3034                                 if (c_ptr->info & CAVE_MARK)
3035                                 {
3036 #ifdef JP
3037                                         msg_print("¼é¤ê¤Î¥ë¡¼¥ó¤¬²õ¤ì¤¿¡ª");
3038 #else
3039                                         msg_print("The rune of protection is broken!");
3040 #endif
3041                                 }
3042
3043                                 /* Forget the rune */
3044                                 c_ptr->info &= ~(CAVE_MARK);
3045
3046                                 /* Break the rune */
3047                                 c_ptr->info &= ~(CAVE_OBJECT);
3048                                 c_ptr->mimic = 0;
3049
3050                                 /* Allow movement */
3051                                 do_move = TRUE;
3052
3053                                 /* Notice */
3054                                 note_spot(ny, nx);
3055                         }
3056                 }
3057                 else if (do_move && is_explosive_rune_grid(c_ptr) &&
3058                          !((r_ptr->flags1 & RF1_NEVER_BLOW) && player_bold(ny, nx)))
3059                 {
3060                         /* Assume no move allowed */
3061                         do_move = FALSE;
3062
3063                         /* Break the ward */
3064                         if (!is_pet(m_ptr))
3065                         {
3066                                 /* Break the ward */
3067                                 if (randint1(BREAK_MINOR_GLYPH) > r_ptr->level)
3068                                 {
3069                                         /* Describe observable breakage */
3070                                         if (c_ptr->info & CAVE_MARK)
3071                                         {
3072 #ifdef JP
3073                                                 msg_print("¥ë¡¼¥ó¤¬ÇúÈ¯¤·¤¿¡ª");
3074 #else
3075                                                 msg_print("The rune explodes!");
3076 #endif
3077
3078                                                 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);
3079                                         }
3080                                 }
3081                                 else
3082                                 {
3083 #ifdef JP
3084                                         msg_print("ÇúÈ¯¤Î¥ë¡¼¥ó¤Ï²ò½ü¤µ¤ì¤¿¡£");
3085 #else
3086                                         msg_print("An explosive rune was disarmed.");
3087 #endif
3088                                 }
3089
3090                                 /* Forget the rune */
3091                                 c_ptr->info &= ~(CAVE_MARK);
3092
3093                                 /* Break the rune */
3094                                 c_ptr->info &= ~(CAVE_OBJECT);
3095                                 c_ptr->mimic = 0;
3096
3097                                 note_spot(ny, nx);
3098                                 lite_spot(ny, nx);
3099
3100                                 if (!m_ptr->r_idx) return;
3101                                 /* Allow movement */
3102                                 do_move = TRUE;
3103                         }
3104                 }
3105
3106                 /* The player is in the way */
3107                 if (do_move && player_bold(ny, nx))
3108                 {
3109                         /* Some monsters never attack */
3110                         if (r_ptr->flags1 & RF1_NEVER_BLOW)
3111                         {
3112                                 /* Hack -- memorize lack of attacks */
3113                                 if (is_original_ap_and_seen(m_ptr)) r_ptr->r_flags1 |= (RF1_NEVER_BLOW);
3114
3115                                 /* Do not move */
3116                                 do_move = FALSE;
3117                         }
3118
3119                         /* In anti-melee dungeon, stupid or confused monster takes useless turn */
3120                         if (do_move && (d_info[dungeon_type].flags1 & DF1_NO_MELEE))
3121                         {
3122                                 if (!m_ptr->confused)
3123                                 {
3124                                         if (!(r_ptr->flags2 & RF2_STUPID)) do_move = FALSE;
3125                                         else
3126                                         {
3127                                                 if (is_original_ap_and_seen(m_ptr)) r_ptr->r_flags2 |= (RF2_STUPID);
3128                                         }
3129                                 }
3130                         }
3131
3132                         /* The player is in the way.  Attack him. */
3133                         if (do_move)
3134                         {
3135                                 if (!p_ptr->riding || one_in_(2))
3136                                 {
3137                                         /* Do the attack */
3138                                         (void)make_attack_normal(m_idx);
3139
3140                                         /* Do not move */
3141                                         do_move = FALSE;
3142
3143                                         /* Took a turn */
3144                                         do_turn = TRUE;
3145                                 }
3146                         }
3147                 }
3148
3149                 /* A monster is in the way */
3150                 if (do_move && c_ptr->m_idx)
3151                 {
3152                         monster_race *z_ptr = &r_info[y_ptr->r_idx];
3153
3154                         /* Assume no movement */
3155                         do_move = FALSE;
3156
3157                         /* Attack 'enemies' */
3158                         if (((r_ptr->flags2 & RF2_KILL_BODY) && !(r_ptr->flags1 & RF1_NEVER_BLOW) &&
3159                                  (r_ptr->mexp * r_ptr->level > z_ptr->mexp * z_ptr->level) &&
3160                                  can_cross && (c_ptr->m_idx != p_ptr->riding)) ||
3161                                 are_enemies(m_ptr, y_ptr) || m_ptr->confused)
3162                         {
3163                                 if (!(r_ptr->flags1 & RF1_NEVER_BLOW))
3164                                 {
3165                                         if (r_ptr->flags2 & RF2_KILL_BODY)
3166                                         {
3167                                                 if (is_original_ap_and_seen(m_ptr)) r_ptr->r_flags2 |= (RF2_KILL_BODY);
3168                                         }
3169
3170                                         /* attack */
3171                                         if (y_ptr->r_idx && (y_ptr->hp >= 0))
3172                                         {
3173                                                 if (monst_attack_monst(m_idx, c_ptr->m_idx)) return;
3174
3175                                                 /* In anti-melee dungeon, stupid or confused monster takes useless turn */
3176                                                 else if (d_info[dungeon_type].flags1 & DF1_NO_MELEE)
3177                                                 {
3178                                                         if (m_ptr->confused) return;
3179                                                         else if (r_ptr->flags2 & RF2_STUPID)
3180                                                         {
3181                                                                 if (is_original_ap_and_seen(m_ptr)) r_ptr->r_flags2 |= (RF2_STUPID);
3182                                                                 return;
3183                                                         }
3184                                                 }
3185                                         }
3186                                 }
3187                         }
3188
3189                         /* Push past weaker monsters (unless leaving a wall) */
3190                         else if ((r_ptr->flags2 & RF2_MOVE_BODY) && !(r_ptr->flags1 & RF1_NEVER_MOVE) &&
3191                                 (r_ptr->mexp > z_ptr->mexp) &&
3192                                 can_cross && (c_ptr->m_idx != p_ptr->riding) &&
3193                                 monster_can_cross_terrain(cave[m_ptr->fy][m_ptr->fx].feat, z_ptr, 0))
3194                         {
3195                                 /* Allow movement */
3196                                 do_move = TRUE;
3197
3198                                 /* Monster pushed past another monster */
3199                                 did_move_body = TRUE;
3200
3201                                 /* Wake up the moved monster */
3202                                 y_ptr->csleep = 0;
3203
3204                                 if (r_info[y_ptr->r_idx].flags7 & (RF7_LITE_MASK | RF7_DARK_MASK))
3205                                         p_ptr->update |= (PU_MON_LITE);
3206
3207                                 /* XXX XXX XXX Message */
3208                         }
3209                 }
3210
3211                 /*
3212                  * Check if monster can cross terrain
3213                  * This is checked after the normal attacks
3214                  * to allow monsters to attack an enemy,
3215                  * even if it can't enter the terrain.
3216                  */
3217                 if (do_move && !can_cross && !did_kill_wall && !did_bash_door)
3218                 {
3219                         /* Assume no move allowed */
3220                         do_move = FALSE;
3221                 }
3222
3223                 /* Some monsters never move */
3224                 if (do_move && (r_ptr->flags1 & RF1_NEVER_MOVE))
3225                 {
3226                         /* Hack -- memorize lack of attacks */
3227                         if (is_original_ap_and_seen(m_ptr)) r_ptr->r_flags1 |= (RF1_NEVER_MOVE);
3228
3229                         /* Do not move */
3230                         do_move = FALSE;
3231                 }
3232
3233                 if (is_riding_mon)
3234                 {
3235                         if (!p_ptr->riding_ryoute && !(m_list[p_ptr->riding].monfear)) do_move = FALSE;
3236                 }
3237
3238                 /* Creature has been allowed move */
3239                 if (do_move)
3240                 {
3241                         s16b this_o_idx, next_o_idx;
3242
3243                         /* Take a turn */
3244                         do_turn = TRUE;
3245
3246                         if (did_kill_wall)
3247                         {
3248                                 if (one_in_(GRINDNOISE))
3249                                 {
3250 #ifdef JP
3251                                         msg_print("¥®¥·¥®¥·¤¤¤¦²»¤¬Ê¹¤³¤¨¤ë¡£");
3252 #else
3253                                         msg_print("There is a grinding sound.");
3254 #endif
3255                                 }
3256
3257                                 cave_alter_feat(ny, nx, FF_HURT_DISI);
3258
3259                                 /* Note changes to viewable region */
3260                                 if (player_has_los_bold(ny, nx)) do_view = TRUE;
3261                         }
3262                         else if (have_flag(f_ptr->flags, FF_TREE))
3263                         {
3264                                 if (!(r_ptr->flags7 & RF7_CAN_FLY) && (!is_riding_mon || !p_ptr->levitation) && !(r_ptr->flags8 & RF8_WILD_WOOD))
3265                                 {
3266                                         m_ptr->energy_need += ENERGY_NEED();
3267                                 }
3268                         }
3269
3270                         if (!is_riding_mon)
3271                         {
3272                                 /* Hack -- Update the old location */
3273                                 cave[oy][ox].m_idx = c_ptr->m_idx;
3274
3275                                 /* Mega-Hack -- move the old monster, if any */
3276                                 if (c_ptr->m_idx)
3277                                 {
3278                                         /* Move the old monster */
3279                                         y_ptr->fy = oy;
3280                                         y_ptr->fx = ox;
3281
3282                                         /* Update the old monster */
3283                                         update_mon(c_ptr->m_idx, TRUE);
3284                                 }
3285
3286                                 /* Hack -- Update the new location */
3287                                 c_ptr->m_idx = m_idx;
3288
3289                                 /* Move the monster */
3290                                 m_ptr->fy = ny;
3291                                 m_ptr->fx = nx;
3292
3293                                 /* Update the monster */
3294                                 update_mon(m_idx, TRUE);
3295
3296                                 /* Redraw the old grid */
3297                                 lite_spot(oy, ox);
3298
3299                                 /* Redraw the new grid */
3300                                 lite_spot(ny, nx);
3301                         }
3302                         else
3303                         {
3304                                 /* Sound */
3305                                 /* sound(SOUND_WALK); */
3306
3307                                 /* Move the player */
3308                                 if (!move_player_effect(ny, nx, MPE_DONT_PICKUP)) break;
3309                         }
3310
3311                         /* Possible disturb */
3312                         if (m_ptr->ml &&
3313                             (disturb_move ||
3314                              (disturb_near && (m_ptr->mflag & MFLAG_VIEW)) ||
3315                              (disturb_high && ap_r_ptr->r_tkills && ap_r_ptr->level >= p_ptr->lev)))
3316                         {
3317                                 /* Disturb */
3318                                 if (is_hostile(m_ptr))
3319                                         disturb(0, 0);
3320                         }
3321
3322                         /* Scan all objects in the grid */
3323                         for (this_o_idx = c_ptr->o_idx; this_o_idx; this_o_idx = next_o_idx)
3324                         {
3325                                 object_type *o_ptr;
3326
3327                                 /* Acquire object */
3328                                 o_ptr = &o_list[this_o_idx];
3329
3330                                 /* Acquire next object */
3331                                 next_o_idx = o_ptr->next_o_idx;
3332
3333                                 /* Skip gold */
3334                                 if (o_ptr->tval == TV_GOLD) continue;
3335
3336                                 /*
3337                                  * Skip "real" corpses and statues, to avoid extreme
3338                                  * silliness like a novice rogue pockets full of statues
3339                                  * and corpses.
3340                                  */
3341                                 if ((o_ptr->tval == TV_CORPSE) ||
3342                                     (o_ptr->tval == TV_STATUE)) continue;
3343
3344                                 /* Take or Kill objects on the floor */
3345                                 if ((r_ptr->flags2 & (RF2_TAKE_ITEM | RF2_KILL_ITEM)) &&
3346                                          (!is_pet(m_ptr) || (p_ptr->pet_extra_flags & PF_PICKUP_ITEMS)))
3347                                 {
3348                                         u32b flgs[TR_FLAG_SIZE];
3349
3350                                         u32b flg2 = 0L;
3351                                         u32b flg3 = 0L;
3352
3353                                         char m_name[80];
3354                                         char o_name[MAX_NLEN];
3355
3356                                         /* Extract some flags */
3357                                         object_flags(o_ptr, flgs);
3358
3359                                         /* Acquire the object name */
3360                                         object_desc(o_name, o_ptr, 0);
3361
3362                                         /* Acquire the monster name */
3363                                         monster_desc(m_name, m_ptr, MD_INDEF_HIDDEN);
3364
3365                                         /* React to objects that hurt the monster */
3366                                         if (have_flag(flgs, TR_KILL_DRAGON)) flg3 |= (RF3_DRAGON);
3367                                         if (have_flag(flgs, TR_SLAY_DRAGON)) flg3 |= (RF3_DRAGON);
3368                                         if (have_flag(flgs, TR_SLAY_TROLL))  flg3 |= (RF3_TROLL);
3369                                         if (have_flag(flgs, TR_KILL_TROLL))  flg3 |= (RF3_TROLL);
3370                                         if (have_flag(flgs, TR_KILL_GIANT))  flg3 |= (RF3_GIANT);
3371                                         if (have_flag(flgs, TR_SLAY_GIANT))  flg3 |= (RF3_GIANT);
3372                                         if (have_flag(flgs, TR_SLAY_ORC))    flg3 |= (RF3_ORC);
3373                                         if (have_flag(flgs, TR_KILL_ORC))    flg3 |= (RF3_ORC);
3374                                         if (have_flag(flgs, TR_SLAY_DEMON))  flg3 |= (RF3_DEMON);
3375                                         if (have_flag(flgs, TR_KILL_DEMON))  flg3 |= (RF3_DEMON);
3376                                         if (have_flag(flgs, TR_SLAY_UNDEAD)) flg3 |= (RF3_UNDEAD);
3377                                         if (have_flag(flgs, TR_KILL_UNDEAD)) flg3 |= (RF3_UNDEAD);
3378                                         if (have_flag(flgs, TR_SLAY_ANIMAL)) flg3 |= (RF3_ANIMAL);
3379                                         if (have_flag(flgs, TR_KILL_ANIMAL)) flg3 |= (RF3_ANIMAL);
3380                                         if (have_flag(flgs, TR_SLAY_EVIL))   flg3 |= (RF3_EVIL);
3381                                         if (have_flag(flgs, TR_KILL_EVIL))   flg3 |= (RF3_EVIL);
3382                                         if (have_flag(flgs, TR_SLAY_HUMAN))  flg2 |= (RF2_HUMAN);
3383                                         if (have_flag(flgs, TR_KILL_HUMAN))  flg2 |= (RF2_HUMAN);
3384
3385                                         /* The object cannot be picked up by the monster */
3386                                         if (object_is_artifact(o_ptr) || (r_ptr->flags3 & flg3) || (r_ptr->flags2 & flg2))
3387                                         {
3388                                                 /* Only give a message for "take_item" */
3389                                                 if ((r_ptr->flags2 & (RF2_TAKE_ITEM)) && (r_ptr->flags2 & (RF2_STUPID)))
3390                                                 {
3391                                                         /* Take note */
3392                                                         did_take_item = TRUE;
3393
3394                                                         /* Describe observable situations */
3395                                                         if (m_ptr->ml && player_can_see_bold(ny, nx))
3396                                                         {
3397                                                                 /* Dump a message */
3398 #ifdef JP
3399                                                                 msg_format("%^s¤Ï%s¤ò½¦¤ª¤¦¤È¤·¤¿¤¬¡¢¤À¤á¤À¤Ã¤¿¡£", m_name, o_name);
3400 #else
3401                                                                 msg_format("%^s tries to pick up %s, but fails.", m_name, o_name);
3402 #endif
3403                                                         }
3404                                                 }
3405                                         }
3406
3407                                         /* Pick up the item */
3408                                         else if (r_ptr->flags2 & RF2_TAKE_ITEM)
3409                                         {
3410                                                 /* Take note */
3411                                                 did_take_item = TRUE;
3412
3413                                                 /* Describe observable situations */
3414                                                 if (player_can_see_bold(ny, nx))
3415                                                 {
3416                                                         /* Dump a message */
3417 #ifdef JP
3418                                                         msg_format("%^s¤¬%s¤ò½¦¤Ã¤¿¡£", m_name, o_name);
3419 #else
3420                                                         msg_format("%^s picks up %s.", m_name, o_name);
3421 #endif
3422                                                 }
3423
3424                                                 /* Excise the object */
3425                                                 excise_object_idx(this_o_idx);
3426
3427                                                 /* Forget mark */
3428                                                 o_ptr->marked = 0;
3429
3430                                                 /* Forget location */
3431                                                 o_ptr->iy = o_ptr->ix = 0;
3432
3433                                                 /* Memorize monster */
3434                                                 o_ptr->held_m_idx = m_idx;
3435
3436                                                 /* Build a stack */
3437                                                 o_ptr->next_o_idx = m_ptr->hold_o_idx;
3438
3439                                                 /* Carry object */
3440                                                 m_ptr->hold_o_idx = this_o_idx;
3441                                         }
3442
3443                                         /* Destroy the item if not a pet */
3444                                         else if (!is_pet(m_ptr))
3445                                         {
3446                                                 /* Take note */
3447                                                 did_kill_item = TRUE;
3448
3449                                                 /* Describe observable situations */
3450                                                 if (player_has_los_bold(ny, nx))
3451                                                 {
3452                                                         /* Dump a message */
3453 #ifdef JP
3454                                                         msg_format("%^s¤¬%s¤òÇË²õ¤·¤¿¡£", m_name, o_name);
3455 #else
3456                                                         msg_format("%^s destroys %s.", m_name, o_name);
3457 #endif
3458                                                 }
3459
3460                                                 /* Delete the object */
3461                                                 delete_object_idx(this_o_idx);
3462                                         }
3463                                 }
3464                         }
3465                 }
3466
3467                 /* Stop when done */
3468                 if (do_turn) break;
3469         }
3470
3471         /*
3472          *  Forward movements failed, but now received LOS attack!
3473          *  Try to flow by smell.
3474          */
3475         if (p_ptr->no_flowed && i > 2 &&  m_ptr->target_y)
3476                 m_ptr->mflag2 &= ~MFLAG2_NOFLOW;
3477
3478         /* If we haven't done anything, try casting a spell again */
3479         if (!do_turn && !do_move && !m_ptr->monfear && !is_riding_mon && aware)
3480         {
3481                 /* Try to cast spell again */
3482                 if (r_ptr->freq_spell && randint1(100) <= r_ptr->freq_spell)
3483                 {
3484                         if (make_attack_spell(m_idx)) return;
3485                 }
3486         }
3487
3488
3489         /* Notice changes in view */
3490         if (do_view)
3491         {
3492                 /* Update some things */
3493                 p_ptr->update |= (PU_VIEW | PU_LITE | PU_FLOW | PU_MONSTERS | PU_MON_LITE);
3494
3495                 /* Window stuff */
3496                 p_ptr->window |= (PW_OVERHEAD | PW_DUNGEON);
3497         }
3498
3499         /* Notice changes in view */
3500         if (do_move && ((r_ptr->flags7 & (RF7_SELF_LD_MASK | RF7_HAS_DARK_1 | RF7_HAS_DARK_2))
3501                 || ((r_ptr->flags7 & (RF7_HAS_LITE_1 | RF7_HAS_LITE_2)) && !p_ptr->inside_battle)))
3502         {
3503                 /* Update some things */
3504                 p_ptr->update |= (PU_MON_LITE);
3505         }
3506
3507         /* Learn things from observable monster */
3508         if (is_original_ap_and_seen(m_ptr))
3509         {
3510                 /* Monster opened a door */
3511                 if (did_open_door) r_ptr->r_flags2 |= (RF2_OPEN_DOOR);
3512
3513                 /* Monster bashed a door */
3514                 if (did_bash_door) r_ptr->r_flags2 |= (RF2_BASH_DOOR);
3515
3516                 /* Monster tried to pick something up */
3517                 if (did_take_item) r_ptr->r_flags2 |= (RF2_TAKE_ITEM);
3518
3519                 /* Monster tried to crush something */
3520                 if (did_kill_item) r_ptr->r_flags2 |= (RF2_KILL_ITEM);
3521
3522                 /* Monster pushed past another monster */
3523                 if (did_move_body) r_ptr->r_flags2 |= (RF2_MOVE_BODY);
3524
3525                 /* Monster passed through a wall */
3526                 if (did_pass_wall) r_ptr->r_flags2 |= (RF2_PASS_WALL);
3527
3528                 /* Monster destroyed a wall */
3529                 if (did_kill_wall) r_ptr->r_flags2 |= (RF2_KILL_WALL);
3530         }
3531
3532
3533         /* Hack -- get "bold" if out of options */
3534         if (!do_turn && !do_move && m_ptr->monfear && aware)
3535         {
3536                 /* No longer afraid */
3537                 m_ptr->monfear = 0;
3538
3539                 /* Message if seen */
3540                 if (see_m)
3541                 {
3542                         char m_name[80];
3543
3544                         /* Acquire the monster name */
3545                         monster_desc(m_name, m_ptr, 0);
3546
3547                         /* Dump a message */
3548 #ifdef JP
3549 msg_format("%^s¤ÏÀï¤¤¤ò·è°Õ¤·¤¿¡ª", m_name);
3550 #else
3551                         msg_format("%^s turns to fight!", m_name);
3552 #endif
3553
3554                         /* Redraw (later) if needed */
3555                         if (p_ptr->health_who == m_idx) p_ptr->redraw |= (PR_HEALTH);
3556
3557                         chg_virtue(V_COMPASSION, -1);
3558                 }
3559
3560                 /* XXX XXX XXX Actually do something now (?) */
3561         }
3562 }
3563
3564 /*
3565  * Process all the "live" monsters, once per game turn.
3566  *
3567  * During each game turn, we scan through the list of all the "live" monsters,
3568  * (backwards, so we can excise any "freshly dead" monsters), energizing each
3569  * monster, and allowing fully energized monsters to move, attack, pass, etc.
3570  *
3571  * Note that monsters can never move in the monster array (except when the
3572  * "compact_monsters()" function is called by "dungeon()" or "save_player()").
3573  *
3574  * This function is responsible for at least half of the processor time
3575  * on a normal system with a "normal" amount of monsters and a player doing
3576  * normal things.
3577  *
3578  * When the player is resting, virtually 90% of the processor time is spent
3579  * in this function, and its children, "process_monster()" and "make_move()".
3580  *
3581  * Most of the rest of the time is spent in "update_view()" and "lite_spot()",
3582  * especially when the player is running.
3583  *
3584  * Note the special "MFLAG_BORN" flag, which allows us to ignore "fresh"
3585  * monsters while they are still being "born".  A monster is "fresh" only
3586  * during the turn in which it is created, and we use the "hack_m_idx" to
3587  * determine if the monster is yet to be processed during the current turn.
3588  *
3589  * Note the special "MFLAG_NICE" flag, which allows the player to get one
3590  * move before any "nasty" monsters get to use their spell attacks.
3591  *
3592  * Note that when the "knowledge" about the currently tracked monster
3593  * changes (flags, attacks, spells), we induce a redraw of the monster
3594  * recall window.
3595  */
3596 void process_monsters(void)
3597 {
3598         int             i;
3599         int             fx, fy;
3600
3601         bool            test;
3602
3603         monster_type    *m_ptr;
3604         monster_race    *r_ptr;
3605
3606         int             old_monster_race_idx;
3607
3608         u32b    old_r_flags1 = 0L;
3609         u32b    old_r_flags2 = 0L;
3610         u32b    old_r_flags3 = 0L;
3611         u32b    old_r_flags4 = 0L;
3612         u32b    old_r_flags5 = 0L;
3613         u32b    old_r_flags6 = 0L;
3614         u32b    old_r_flagsr = 0L;
3615
3616         byte    old_r_blows0 = 0;
3617         byte    old_r_blows1 = 0;
3618         byte    old_r_blows2 = 0;
3619         byte    old_r_blows3 = 0;
3620
3621         byte    old_r_cast_spell = 0;
3622
3623         int speed;
3624
3625         /* Clear monster fighting indicator */
3626         mon_fight = FALSE;
3627
3628         /* Memorize old race */
3629         old_monster_race_idx = p_ptr->monster_race_idx;
3630
3631         /* Acquire knowledge */
3632         if (p_ptr->monster_race_idx)
3633         {
3634                 /* Acquire current monster */
3635                 r_ptr = &r_info[p_ptr->monster_race_idx];
3636
3637                 /* Memorize flags */
3638                 old_r_flags1 = r_ptr->r_flags1;
3639                 old_r_flags2 = r_ptr->r_flags2;
3640                 old_r_flags3 = r_ptr->r_flags3;
3641                 old_r_flags4 = r_ptr->r_flags4;
3642                 old_r_flags5 = r_ptr->r_flags5;
3643                 old_r_flags6 = r_ptr->r_flags6;
3644                 old_r_flagsr = r_ptr->r_flagsr;
3645
3646                 /* Memorize blows */
3647                 old_r_blows0 = r_ptr->r_blows[0];
3648                 old_r_blows1 = r_ptr->r_blows[1];
3649                 old_r_blows2 = r_ptr->r_blows[2];
3650                 old_r_blows3 = r_ptr->r_blows[3];
3651
3652                 /* Memorize castings */
3653                 old_r_cast_spell = r_ptr->r_cast_spell;
3654         }
3655
3656
3657         /* Process the monsters (backwards) */
3658         for (i = m_max - 1; i >= 1; i--)
3659         {
3660                 /* Access the monster */
3661                 m_ptr = &m_list[i];
3662                 r_ptr = &r_info[m_ptr->r_idx];
3663
3664                 /* Handle "leaving" */
3665                 if (p_ptr->leaving) break;
3666
3667                 /* Ignore "dead" monsters */
3668                 if (!m_ptr->r_idx) continue;
3669
3670                 if (p_ptr->wild_mode) continue;
3671
3672
3673                 /* Handle "fresh" monsters */
3674                 if (m_ptr->mflag & MFLAG_BORN)
3675                 {
3676                         /* No longer "fresh" */
3677                         m_ptr->mflag &= ~(MFLAG_BORN);
3678
3679                         /* Skip */
3680                         continue;
3681                 }
3682
3683                 /* Hack -- Require proximity */
3684                 if (m_ptr->cdis >= AAF_LIMIT) continue;
3685
3686
3687                 /* Access the location */
3688                 fx = m_ptr->fx;
3689                 fy = m_ptr->fy;
3690
3691                 /* Flow by smell is allowed */
3692                 if (!p_ptr->no_flowed)
3693                 {
3694                         m_ptr->mflag2 &= ~MFLAG2_NOFLOW;
3695                 }
3696
3697                 /* Assume no move */
3698                 test = FALSE;
3699
3700                 /* Handle "sensing radius" */
3701                 if (m_ptr->cdis <= (is_pet(m_ptr) ? (r_ptr->aaf > MAX_SIGHT ? MAX_SIGHT : r_ptr->aaf) : r_ptr->aaf))
3702                 {
3703                         /* We can "sense" the player */
3704                         test = TRUE;
3705                 }
3706
3707                 /* Handle "sight" and "aggravation" */
3708                 else if ((m_ptr->cdis <= MAX_SIGHT) &&
3709                         (player_has_los_bold(fy, fx) || (p_ptr->cursed & TRC_AGGRAVATE)))
3710                 {
3711                         /* We can "see" or "feel" the player */
3712                         test = TRUE;
3713                 }
3714
3715 #if 0 /* (cave[py][px].when == cave[fy][fx].when) is always FALSE... */
3716                 /* Hack -- Monsters can "smell" the player from far away */
3717                 /* Note that most monsters have "aaf" of "20" or so */
3718                 else if (!(m_ptr->mflag2 & MFLAG2_NOFLOW) &&
3719                         cave_have_flag_bold(py, px, FF_MOVE) &&
3720                         (cave[py][px].when == cave[fy][fx].when) &&
3721                         (cave[fy][fx].dist < MONSTER_FLOW_DEPTH) &&
3722                         (cave[fy][fx].dist < r_ptr->aaf))
3723                 {
3724                         /* We can "smell" the player */
3725                         test = TRUE;
3726                 }
3727 #endif
3728                 else if (m_ptr->target_y) test = TRUE;
3729
3730                 /* Do nothing */
3731                 if (!test) continue;
3732
3733
3734                 if (p_ptr->riding == i)
3735                         speed = p_ptr->pspeed;
3736                 else
3737                 {
3738                         speed = m_ptr->mspeed;
3739
3740                         /* Monsters move quickly in Nightmare mode */
3741                         if (ironman_nightmare) speed += 5;
3742
3743                         if (m_ptr->fast) speed += 10;
3744                         if (m_ptr->slow) speed -= 10;
3745                 }
3746
3747                 /* Give this monster some energy */
3748                 m_ptr->energy_need -= SPEED_TO_ENERGY(speed);
3749
3750                 /* Not enough energy to move */
3751                 if (m_ptr->energy_need > 0) continue;
3752
3753                 /* Use up "some" energy */
3754                 m_ptr->energy_need += ENERGY_NEED();
3755
3756
3757                 /* Save global index */
3758                 hack_m_idx = i;
3759
3760                 /* Process the monster */
3761                 process_monster(i);
3762
3763                 reset_target(m_ptr);
3764
3765                 /* Give up flow_by_smell when it might useless */
3766                 if (p_ptr->no_flowed && one_in_(3))
3767                         m_ptr->mflag2 |= MFLAG2_NOFLOW;
3768
3769                 /* Hack -- notice death or departure */
3770                 if (!p_ptr->playing || p_ptr->is_dead) break;
3771
3772                 /* Notice leaving */
3773                 if (p_ptr->leaving) break;
3774         }
3775
3776         /* Reset global index */
3777         hack_m_idx = 0;
3778
3779
3780         /* Tracking a monster race (the same one we were before) */
3781         if (p_ptr->monster_race_idx && (p_ptr->monster_race_idx == old_monster_race_idx))
3782         {
3783                 /* Acquire monster race */
3784                 r_ptr = &r_info[p_ptr->monster_race_idx];
3785
3786                 /* Check for knowledge change */
3787                 if ((old_r_flags1 != r_ptr->r_flags1) ||
3788                         (old_r_flags2 != r_ptr->r_flags2) ||
3789                         (old_r_flags3 != r_ptr->r_flags3) ||
3790                         (old_r_flags4 != r_ptr->r_flags4) ||
3791                         (old_r_flags5 != r_ptr->r_flags5) ||
3792                         (old_r_flags6 != r_ptr->r_flags6) ||
3793                         (old_r_flagsr != r_ptr->r_flagsr) ||
3794                         (old_r_blows0 != r_ptr->r_blows[0]) ||
3795                         (old_r_blows1 != r_ptr->r_blows[1]) ||
3796                         (old_r_blows2 != r_ptr->r_blows[2]) ||
3797                         (old_r_blows3 != r_ptr->r_blows[3]) ||
3798                         (old_r_cast_spell != r_ptr->r_cast_spell))
3799                 {
3800                         /* Window stuff */
3801                         p_ptr->window |= (PW_MONSTER);
3802                 }
3803         }
3804 }
3805
3806
3807
3808 bool process_the_world(int num, int who, bool vs_player)
3809 {
3810         monster_type *m_ptr = &m_list[hack_m_idx];  /* the world monster */
3811
3812         if(world_monster) return (FALSE);
3813
3814         if(vs_player)
3815         {
3816                 char m_name[80];
3817                 monster_desc(m_name, m_ptr, 0);
3818
3819                 if (who == 1)
3820 #ifdef JP
3821                         msg_print("¡Ö¡Ø¥¶¡¦¥ï¡¼¥ë¥É¡Ù¡ª»þ¤Ï»ß¤Þ¤Ã¤¿¡ª¡×");
3822 #else
3823                         msg_format("%s yells 'The World! Time has stopped!'", m_name);
3824 #endif
3825                 else if (who == 3)
3826 #ifdef JP
3827                         msg_print("¡Ö»þ¤è¡ª¡×");
3828 #else
3829                         msg_format("%s yells 'Time!'", m_name);
3830 #endif
3831                 else msg_print("hek!");
3832
3833                 msg_print(NULL);
3834         }
3835
3836         /* This monster cast spells */
3837         world_monster = hack_m_idx;
3838
3839         if (vs_player) do_cmd_redraw();
3840
3841         while(num--)
3842         {
3843                 if(!m_ptr->r_idx) break;
3844                 process_monster(world_monster);
3845
3846                 reset_target(m_ptr);
3847
3848                 /* Notice stuff */
3849                 if (p_ptr->notice) notice_stuff();
3850
3851                 /* Update stuff */
3852                 if (p_ptr->update) update_stuff();
3853
3854                 /* Redraw stuff */
3855                 if (p_ptr->redraw) redraw_stuff();
3856
3857                 /* Redraw stuff */
3858                 if (p_ptr->window) window_stuff();
3859
3860                 /* Delay */
3861                 if (vs_player) Term_xtra(TERM_XTRA_DELAY, 500);
3862         }
3863
3864         /* Redraw map */
3865         p_ptr->redraw |= (PR_MAP);
3866
3867         /* Update monsters */
3868         p_ptr->update |= (PU_MONSTERS);
3869
3870         /* Window stuff */
3871         p_ptr->window |= (PW_OVERHEAD | PW_DUNGEON);
3872
3873         world_monster = 0;
3874         if (vs_player || (los(py, px, m_ptr->fy, m_ptr->fx) && projectable(py, px, m_ptr->fy, m_ptr->fx)))
3875         {
3876 #ifdef JP
3877                 msg_print("¡Ö»þ¤ÏÆ°¤¤À¤¹¡Ä¡×");
3878 #else
3879                 msg_print("You feel time flowing around you once more.");
3880 #endif
3881                 msg_print(NULL);
3882         }
3883
3884         handle_stuff();
3885
3886         return (TRUE);
3887 }
3888
3889
3890 void monster_gain_exp(int m_idx, int s_idx)
3891 {
3892         monster_type *m_ptr = &m_list[m_idx];
3893         monster_race *r_ptr = &r_info[m_ptr->r_idx];
3894         monster_race *s_ptr = &r_info[s_idx];
3895         int new_exp;
3896
3897         if (p_ptr->inside_battle) return;
3898
3899         if (!r_ptr->next_exp) return;
3900
3901         new_exp = s_ptr->mexp * s_ptr->level / (r_ptr->level + 2);
3902         if (m_idx == p_ptr->riding) new_exp = (new_exp + 1) / 2;
3903         if (!dun_level) new_exp /= 5;
3904         m_ptr->exp += new_exp;
3905         if (m_ptr->mflag2 & MFLAG2_CHAMELEON) return;
3906
3907         if (m_ptr->exp >= r_ptr->next_exp)
3908         {
3909                 char m_name[80];
3910                 int old_hp = m_ptr->hp;
3911                 int old_maxhp = m_ptr->max_maxhp;
3912                 int old_r_idx = m_ptr->r_idx;
3913                 byte old_sub_align = m_ptr->sub_align;
3914
3915                 /* Hack -- Reduce the racial counter of previous monster */
3916                 real_r_ptr(m_ptr)->cur_num--;
3917
3918                 monster_desc(m_name, m_ptr, 0);
3919                 m_ptr->r_idx = r_ptr->next_r_idx;
3920
3921                 /* Count the monsters on the level */
3922                 real_r_ptr(m_ptr)->cur_num++;
3923
3924                 m_ptr->ap_r_idx = m_ptr->r_idx;
3925                 r_ptr = &r_info[m_ptr->r_idx];
3926
3927                 if (r_ptr->flags1 & RF1_FORCE_MAXHP)
3928                 {
3929                         m_ptr->max_maxhp = maxroll(r_ptr->hdice, r_ptr->hside);
3930                 }
3931                 else
3932                 {
3933                         m_ptr->max_maxhp = damroll(r_ptr->hdice, r_ptr->hside);
3934                 }
3935                 if (ironman_nightmare)
3936                 {
3937                         u32b hp = m_ptr->max_maxhp * 2L;
3938
3939                         m_ptr->max_maxhp = (s16b)MIN(30000, hp);
3940                 }
3941                 m_ptr->maxhp = m_ptr->max_maxhp;
3942                 m_ptr->hp = old_hp * m_ptr->maxhp / old_maxhp;
3943
3944                 /* Extract the monster base speed */
3945                 m_ptr->mspeed = get_mspeed(r_ptr);
3946
3947                 /* Sub-alignment of a monster */
3948                 if (!is_pet(m_ptr) && !(r_ptr->flags3 & (RF3_EVIL | RF3_GOOD)))
3949                         m_ptr->sub_align = old_sub_align;
3950                 else
3951                 {
3952                         m_ptr->sub_align = SUB_ALIGN_NEUTRAL;
3953                         if (r_ptr->flags3 & RF3_EVIL) m_ptr->sub_align |= SUB_ALIGN_EVIL;
3954                         if (r_ptr->flags3 & RF3_GOOD) m_ptr->sub_align |= SUB_ALIGN_GOOD;
3955                 }
3956
3957                 m_ptr->exp = 0;
3958
3959                 if (is_pet(m_ptr) || m_ptr->ml)
3960                 {
3961                         if (!ignore_unview || player_can_see_bold(m_ptr->fy, m_ptr->fx))
3962                         {
3963 #ifdef JP
3964                                 msg_format("%s¤Ï%s¤Ë¿Ê²½¤·¤¿¡£", m_name, r_name + r_ptr->name);
3965 #else
3966                                 msg_format("%^s evolved into %s.", m_name, r_name + r_ptr->name);
3967 #endif
3968                         }
3969
3970                         r_info[old_r_idx].r_xtra1 |= MR1_SINKA;
3971
3972                         /* Now you feel very close to this pet. */
3973                         m_ptr->parent_m_idx = 0;
3974                 }
3975                 update_mon(m_idx, FALSE);
3976                 lite_spot(m_ptr->fy, m_ptr->fx);
3977         }
3978         if (m_idx == p_ptr->riding) p_ptr->update |= PU_BONUS;
3979 }