main/wall.c

   1 /*
   2 THE COMPUTER CODE CONTAINED HEREIN IS THE SOLE PROPERTY OF PARALLAX
   3 SOFTWARE CORPORATION ("PARALLAX").  PARALLAX, IN DISTRIBUTING THE CODE TO
   4 END-USERS, AND SUBJECT TO ALL OF THE TERMS AND CONDITIONS HEREIN, GRANTS A
   5 ROYALTY-FREE, PERPETUAL LICENSE TO SUCH END-USERS FOR USE BY SUCH END-USERS
   6 IN USING, DISPLAYING,  AND CREATING DERIVATIVE WORKS THEREOF, SO LONG AS
   7 SUCH USE, DISPLAY OR CREATION IS FOR NON-COMMERCIAL, ROYALTY OR REVENUE
   8 FREE PURPOSES.  IN NO EVENT SHALL THE END-USER USE THE COMPUTER CODE
   9 CONTAINED HEREIN FOR REVENUE-BEARING PURPOSES.  THE END-USER UNDERSTANDS
  10 AND AGREES TO THE TERMS HEREIN AND ACCEPTS THE SAME BY USE OF THIS FILE.
  11 COPYRIGHT 1993-1999 PARALLAX SOFTWARE CORPORATION.  ALL RIGHTS RESERVED.
  12 */
  13
  14
  15 #ifdef RCS
  16 static char rcsid[] = "$Id: wall.c,v 1.1.1.1 2001-01-19 03:30:00 bradleyb Exp $";
  17 #endif
  18
  19 #include <conf.h>
  20
  21 #include <stdio.h>
  22 #include <stdlib.h>
  23 #include <math.h>
  24 #include <string.h>
  25
  26 #include "pstypes.h"
  27 #include "mono.h"
  28 #include "gr.h"
  29 #include "wall.h"
  30 #include "switch.h"
  31 #include "inferno.h"
  32 #include "segment.h"
  33 #include "error.h"
  34 #include "gameseg.h"
  35 #include "game.h"
  36 #include "bm.h"
  37 #include "vclip.h"
  38 #include "player.h"
  39 #include "gauges.h"
  40 #include "text.h"
  41 #include "fireball.h"
  42 #include "textures.h"
  43 #include "sounds.h"
  44 #include "newdemo.h"
  45 #include "multi.h"
  46 #include "gameseq.h"
  47 #include "laser.h"              //      For seeing if a flare is stuck in a wall.
  48 #include "collide.h"
  49 #include "effects.h"
  50
  51 #ifdef EDITOR
  52 #include "editor\editor.h"
  53 #endif
  54
  55 //      Special door on boss level which is locked if not in multiplayer...sorry for this awful solution --MK.
  56 #define BOSS_LOCKED_DOOR_LEVEL  7
  57 #define BOSS_LOCKED_DOOR_SEG            595
  58 #define BOSS_LOCKED_DOOR_SIDE   5
  59
  60 wall Walls[MAX_WALLS];                                  // Master walls array
  61 int Num_walls=0;                                                        // Number of walls
  62
  63 wclip WallAnims[MAX_WALL_ANIMS];                // Wall animations
  64 int Num_wall_anims;
  65 //--unused-- int walls_bm_num[MAX_WALL_ANIMS];
  66
  67 //door Doors[MAX_DOORS];                                        //      Master doors array
  68
  69 active_door ActiveDoors[MAX_DOORS];
  70 int Num_open_doors;                                             // Number of open doors
  71
  72 #define CLOAKING_WALL_TIME f1_0
  73
  74 #define MAX_CLOAKING_WALLS 10
  75 cloaking_wall CloakingWalls[MAX_CLOAKING_WALLS];
  76 int Num_cloaking_walls;
  77
  78 //--unused-- grs_bitmap *wall_title_bms[MAX_WALL_ANIMS];
  79
  80 //#define BM_FLAG_TRANSPARENT                   1
  81 //#define BM_FLAG_SUPER_TRANSPARENT     2
  82
  83 #ifdef EDITOR
  84 char    Wall_names[7][10] = {
  85         "NORMAL   ",
  86         "BLASTABLE",
  87         "DOOR     ",
  88         "ILLUSION ",
  89         "OPEN     ",
  90         "CLOSED   ",
  91         "EXTERNAL "
  92 };
  93 #endif
  94
  95 // Function prototypes
  96 void kill_stuck_objects(int wallnum);
  97
  98
  99
 100 // This function determines whether the current segment/side is transparent
 101 //              1 = YES
 102 //              0 = NO
 103 int check_transparency( segment * seg, int side )
 104 {
 105         if ( (seg->sides[side].tmap_num2 & 0x3FFF) == 0) {
 106                 if (GameBitmaps[Textures[seg->sides[side].tmap_num].index].bm_flags & BM_FLAG_TRANSPARENT )
 107                         return 1;
 108                 else
 109                         return 0;
 110                 }
 111
 112         if (GameBitmaps[Textures[seg->sides[side].tmap_num2 & 0x3FFF ].index].bm_flags & BM_FLAG_SUPER_TRANSPARENT )
 113                 return 1;
 114         else
 115                 return 0;
 116 }
 117
 118 //define these here so I don't have to change wall_is_doorway and run
 119 //the risk of screwing it up.
 120 #define WID_WALL                                                2       // 0/1/0                wall
 121 #define WID_TRANSPARENT_WALL            6       //      0/1/1           transparent wall
 122 #define WID_ILLUSORY_WALL                       3       //      1/1/0           illusory wall
 123 #define WID_TRANSILLUSORY_WALL  7       //      1/1/1           transparent illusory wall
 124 #define WID_NO_WALL                                     5       //      1/0/1           no wall, can fly through
 125 #define WID_EXTERNAL                                    8       // 0/0/0/1      don't see it, dont fly through it
 126
 127 //-----------------------------------------------------------------
 128 // This function checks whether we can fly through the given side.
 129 //      In other words, whether or not we have a 'doorway'
 130 //       Flags:
 131 //              WID_FLY_FLAG                            1
 132 //              WID_RENDER_FLAG                 2
 133 //              WID_RENDPAST_FLAG                       4
 134 //       Return values:
 135 //              WID_WALL                                                2       // 0/1/0                wall
 136 //              WID_TRANSPARENT_WALL            6       //      0/1/1           transparent wall
 137 //              WID_ILLUSORY_WALL                       3       //      1/1/0           illusory wall
 138 //              WID_TRANSILLUSORY_WALL  7       //      1/1/1           transparent illusory wall
 139 //              WID_NO_WALL                                     5       //      1/0/1           no wall, can fly through
 140 int wall_is_doorway ( segment * seg, int side )
 141 {
 142         int flags, type;
 143         int state;
 144 //--Covered by macro    // No child.
 145 //--Covered by macro    if (seg->children[side] == -1)
 146 //--Covered by macro            return WID_WALL;
 147
 148 //--Covered by macro    if (seg->children[side] == -2)
 149 //--Covered by macro            return WID_EXTERNAL_FLAG;
 150
 151 //--Covered by macro // No wall present.
 152 //--Covered by macro    if (seg->sides[side].wall_num == -1)
 153 //--Covered by macro            return WID_NO_WALL;
 154
 155         Assert(seg-Segments>=0 && seg-Segments<=Highest_segment_index);
 156         Assert(side>=0 && side<6);
 157
 158         type = Walls[seg->sides[side].wall_num].type;
 159         flags = Walls[seg->sides[side].wall_num].flags;
 160
 161         if (type == WALL_OPEN)
 162                 return WID_NO_WALL;
 163
 164         if (type == WALL_ILLUSION) {
 165                 if (Walls[seg->sides[side].wall_num].flags & WALL_ILLUSION_OFF)
 166                         return WID_NO_WALL;
 167                 else {
 168                         if (check_transparency( seg, side))
 169                                 return WID_TRANSILLUSORY_WALL;
 170                         else
 171                                 return WID_ILLUSORY_WALL;
 172                 }
 173         }
 174
 175         if (type == WALL_BLASTABLE) {
 176                 if (flags & WALL_BLASTED)
 177                         return WID_TRANSILLUSORY_WALL;
 178
 179                 if (check_transparency( seg, side))
 180                         return WID_TRANSPARENT_WALL;
 181                 else
 182                         return WID_WALL;
 183         }
 184
 185         if (flags & WALL_DOOR_OPENED)
 186                 return WID_TRANSILLUSORY_WALL;
 187
 188         if (type == WALL_CLOAKED)
 189                 return WID_RENDER_FLAG | WID_RENDPAST_FLAG | WID_CLOAKED_FLAG;
 190
 191         state = Walls[seg->sides[side].wall_num].state;
 192         if ((type == WALL_DOOR) && (state == WALL_DOOR_OPENING))
 193                 return WID_TRANSPARENT_WALL;
 194
 195 // If none of the above flags are set, there is no doorway.
 196         if (check_transparency( seg, side))
 197                 return WID_TRANSPARENT_WALL;
 198         else
 199                 return WID_WALL; // There are children behind the door.
 200 }
 201
 202 #ifdef EDITOR
 203 //-----------------------------------------------------------------
 204 // Initializes all the walls (in other words, no special walls)
 205 void wall_init()
 206 {
 207         int i;
 208
 209         Num_walls = 0;
 210         for (i=0;i<MAX_WALLS;i++) {
 211                 Walls[i].segnum = Walls[i].sidenum = -1;
 212                 Walls[i].type = WALL_NORMAL;
 213                 Walls[i].flags = 0;
 214                 Walls[i].hps = 0;
 215                 Walls[i].trigger = -1;
 216                 Walls[i].clip_num = -1;
 217                 Walls[i].linked_wall = -1;
 218                 }
 219         Num_open_doors = 0;
 220         Num_cloaking_walls = 0;
 221
 222 }
 223
 224 //-----------------------------------------------------------------
 225 // Initializes one wall.
 226 void wall_reset(segment *seg, int side)
 227 {
 228         int i;
 229
 230         i = seg->sides[side].wall_num;
 231
 232         if (i==-1) {
 233                 mprintf((0, "Resetting Illegal Wall\n"));
 234                 return;
 235         }
 236
 237         Walls[i].segnum = seg-Segments;
 238         Walls[i].sidenum = side;
 239         Walls[i].type = WALL_NORMAL;
 240         Walls[i].flags = 0;
 241         Walls[i].hps = 0;
 242         Walls[i].trigger = -1;
 243         Walls[i].clip_num = -1;
 244         Walls[i].linked_wall = -1;
 245 }
 246 #endif
 247
 248 //set the tmap_num or tmap_num2 field for a wall/door
 249 void wall_set_tmap_num(segment *seg,int side,segment *csegp,int cside,int anim_num,int frame_num)
 250 {
 251         wclip *anim = &WallAnims[anim_num];
 252         int tmap = anim->frames[frame_num];
 253
 254         if ( Newdemo_state==ND_STATE_PLAYBACK ) return;
 255
 256         if (anim->flags & WCF_TMAP1)    {
 257                 seg->sides[side].tmap_num = csegp->sides[cside].tmap_num = tmap;
 258                 if ( Newdemo_state == ND_STATE_RECORDING )
 259                         newdemo_record_wall_set_tmap_num1(seg-Segments,side,csegp-Segments,cside,tmap);
 260         } else  {
 261                 Assert(tmap!=0 && seg->sides[side].tmap_num2!=0);
 262                 seg->sides[side].tmap_num2 = csegp->sides[cside].tmap_num2 = tmap;
 263                 if ( Newdemo_state == ND_STATE_RECORDING )
 264                         newdemo_record_wall_set_tmap_num2(seg-Segments,side,csegp-Segments,cside,tmap);
 265         }
 266 }
 267
 268
 269 // -------------------------------------------------------------------------------
 270 //when the wall has used all its hitpoints, this will destroy it
 271 void blast_blastable_wall(segment *seg, int side)
 272 {
 273         int Connectside;
 274         segment *csegp;
 275         int a, n;
 276
 277         Assert(seg->sides[side].wall_num != -1);
 278
 279         Walls[seg->sides[side].wall_num].hps = -1;      //say it's blasted
 280
 281         csegp = &Segments[seg->children[side]];
 282         Connectside = find_connect_side(seg, csegp);
 283         Assert(Connectside != -1);
 284
 285         kill_stuck_objects(seg->sides[side].wall_num);
 286         kill_stuck_objects(csegp->sides[Connectside].wall_num);
 287
 288         //if this is an exploding wall, explode it
 289         if (WallAnims[Walls[seg->sides[side].wall_num].clip_num].flags & WCF_EXPLODES)
 290                 explode_wall(seg-Segments,side);
 291         else {
 292                 //if not exploding, set final frame, and make door passable
 293                 a = Walls[seg->sides[side].wall_num].clip_num;
 294                 n = WallAnims[a].num_frames;
 295                 wall_set_tmap_num(seg,side,csegp,Connectside,a,n-1);
 296                 Walls[seg->sides[side].wall_num].flags |= WALL_BLASTED;
 297                 Walls[csegp->sides[Connectside].wall_num].flags |= WALL_BLASTED;
 298         }
 299
 300 }
 301
 302
 303 //-----------------------------------------------------------------
 304 // Destroys a blastable wall.
 305 void wall_destroy(segment *seg, int side)
 306 {
 307         Assert(seg->sides[side].wall_num != -1);
 308         Assert(seg-Segments != 0);
 309
 310         if (Walls[seg->sides[side].wall_num].type == WALL_BLASTABLE)
 311                 blast_blastable_wall( seg, side );
 312         else
 313                 Error("Hey bub, you are trying to destroy an indestructable wall.");
 314 }
 315
 316 //-----------------------------------------------------------------
 317 // Deteriorate appearance of wall. (Changes bitmap (paste-ons))
 318 void wall_damage(segment *seg, int side, fix damage)
 319 {
 320         int a, i, n;
 321
 322         if (seg->sides[side].wall_num == -1) {
 323                 mprintf((0, "Damaging illegal wall\n"));
 324                 return;
 325         }
 326
 327         if (Walls[seg->sides[side].wall_num].type != WALL_BLASTABLE)
 328                 return;
 329
 330         if (!(Walls[seg->sides[side].wall_num].flags & WALL_BLASTED) && Walls[seg->sides[side].wall_num].hps >= 0)
 331                 {
 332                 int Connectside;
 333                 segment *csegp;
 334
 335                 csegp = &Segments[seg->children[side]];
 336                 Connectside = find_connect_side(seg, csegp);
 337                 Assert(Connectside != -1);
 338
 339                 Walls[seg->sides[side].wall_num].hps -= damage;
 340                 Walls[csegp->sides[Connectside].wall_num].hps -= damage;
 341
 342                 a = Walls[seg->sides[side].wall_num].clip_num;
 343                 n = WallAnims[a].num_frames;
 344
 345                 if (Walls[seg->sides[side].wall_num].hps < WALL_HPS*1/n) {
 346                         blast_blastable_wall( seg, side );
 347                         #ifdef NETWORK
 348                         if (Game_mode & GM_MULTI)
 349                                 multi_send_door_open(seg-Segments, side,Walls[seg->sides[side].wall_num].flags);
 350                         #endif
 351                 }
 352                 else
 353                         for (i=0;i<n;i++)
 354                                 if (Walls[seg->sides[side].wall_num].hps < WALL_HPS*(n-i)/n) {
 355                                         wall_set_tmap_num(seg,side,csegp,Connectside,a,i);
 356                                 }
 357                 }
 358 }
 359
 360
 361 //-----------------------------------------------------------------
 362 // Opens a door
 363 void wall_open_door(segment *seg, int side)
 364 {
 365         wall *w;
 366         active_door *d;
 367         int Connectside;
 368         segment *csegp;
 369
 370         Assert(seg->sides[side].wall_num != -1);        //Opening door on illegal wall
 371
 372         w = &Walls[seg->sides[side].wall_num];
 373
 374         //kill_stuck_objects(seg->sides[side].wall_num);
 375
 376         if ((w->state == WALL_DOOR_OPENING) ||          //already opening
 377                  (w->state == WALL_DOOR_WAITING)        ||              //open, waiting to close
 378                  (w->state == WALL_DOOR_OPEN))                  //open, & staying open
 379                 return;
 380
 381         if (w->state == WALL_DOOR_CLOSING) {            //closing, so reuse door
 382
 383                 int i;
 384
 385                 d = NULL;
 386
 387                 for (i=0;i<Num_open_doors;i++) {                //find door
 388
 389                         d = &ActiveDoors[i];
 390
 391                         if (d->front_wallnum[0]==w-Walls || d->back_wallnum[0]==w-Walls || (d->n_parts==2 && (d->front_wallnum[1]==w-Walls || d->back_wallnum[1]==w-Walls)))
 392                                 break;
 393                 }
 394
 395                 if (i>=Num_open_doors && (Game_mode & GM_MULTI))
 396                                 goto FastFix;
 397
 398                 Assert(i<Num_open_doors);                               //didn't find door!
 399                 Assert( d!=NULL ); // Get John!
 400
 401                 d->time = WallAnims[w->clip_num].play_time - d->time;
 402
 403                 if (d->time < 0)
 404                         d->time = 0;
 405
 406         }
 407         else {                                                                                  //create new door
 408                 Assert(w->state == WALL_DOOR_CLOSED);
 409                 FastFix:
 410                 d = &ActiveDoors[Num_open_doors];
 411                 d->time = 0;
 412                 Num_open_doors++;
 413                 Assert( Num_open_doors < MAX_DOORS );
 414         }
 415
 416
 417         w->state = WALL_DOOR_OPENING;
 418
 419         // So that door can't be shot while opening
 420         csegp = &Segments[seg->children[side]];
 421         Connectside = find_connect_side(seg, csegp);
 422         Assert(Connectside != -1);
 423
 424         Walls[csegp->sides[Connectside].wall_num].state = WALL_DOOR_OPENING;
 425
 426         //kill_stuck_objects(csegp->sides[Connectside].wall_num);
 427
 428         d->front_wallnum[0] = seg->sides[side].wall_num;
 429         d->back_wallnum[0] = csegp->sides[Connectside].wall_num;
 430
 431         Assert( seg-Segments != -1);
 432
 433         if (Newdemo_state == ND_STATE_RECORDING) {
 434                 newdemo_record_door_opening(seg-Segments, side);
 435         }
 436
 437         if (w->linked_wall != -1) {
 438                 wall *w2;
 439                 segment *seg2;
 440
 441                 w2              = &Walls[w->linked_wall];
 442                 seg2    = &Segments[w2->segnum];
 443
 444                 Assert(w2->linked_wall == seg->sides[side].wall_num);
 445                 //Assert(!(w2->flags & WALL_DOOR_OPENING  ||  w2->flags & WALL_DOOR_OPENED));
 446
 447                 w2->state = WALL_DOOR_OPENING;
 448
 449                 csegp = &Segments[seg2->children[w2->sidenum]];
 450                 Connectside = find_connect_side(seg2, csegp);
 451                 Assert(Connectside != -1);
 452                 Walls[csegp->sides[Connectside].wall_num].state = WALL_DOOR_OPENING;
 453
 454                 d->n_parts = 2;
 455                 d->front_wallnum[1] = w->linked_wall;
 456                 d->back_wallnum[1] = csegp->sides[Connectside].wall_num;
 457         }
 458         else
 459                 d->n_parts = 1;
 460
 461
 462         if ( Newdemo_state != ND_STATE_PLAYBACK )
 463         {
 464                 // NOTE THE LINK TO ABOVE!!!!
 465                 vms_vector cp;
 466                 compute_center_point_on_side(&cp, seg, side );
 467                 if (WallAnims[w->clip_num].open_sound > -1 )
 468                         digi_link_sound_to_pos( WallAnims[w->clip_num].open_sound, seg-Segments, side, &cp, 0, F1_0 );
 469
 470         }
 471 }
 472
 473 //-----------------------------------------------------------------
 474 // start the transition from closed -> open wall
 475 void start_wall_cloak(segment *seg, int side)
 476 {
 477         wall *w;
 478         cloaking_wall *d;
 479         int Connectside;
 480         segment *csegp;
 481         int i;
 482
 483         if ( Newdemo_state==ND_STATE_PLAYBACK ) return;
 484
 485         Assert(seg->sides[side].wall_num != -1);        //Opening door on illegal wall
 486
 487         w = &Walls[seg->sides[side].wall_num];
 488
 489         if (w->type == WALL_OPEN || w->state == WALL_DOOR_CLOAKING)             //already open or cloaking
 490                 return;
 491
 492         csegp = &Segments[seg->children[side]];
 493         Connectside = find_connect_side(seg, csegp);
 494         Assert(Connectside != -1);
 495
 496         if (w->state == WALL_DOOR_DECLOAKING) { //decloaking, so reuse door
 497
 498                 int i;
 499
 500                 d = NULL;
 501
 502                 for (i=0;i<Num_cloaking_walls;i++) {            //find door
 503
 504                         d = &CloakingWalls[i];
 505
 506                         if (d->front_wallnum==w-Walls || d->back_wallnum==w-Walls )
 507                                 break;
 508                 }
 509
 510                 Assert(i<Num_cloaking_walls);                           //didn't find door!
 511                 Assert( d!=NULL ); // Get John!
 512
 513                 d->time = CLOAKING_WALL_TIME - d->time;
 514
 515         }
 516         else if (w->state == WALL_DOOR_CLOSED) {        //create new door
 517                 d = &CloakingWalls[Num_cloaking_walls];
 518                 d->time = 0;
 519                 if (Num_cloaking_walls >= MAX_CLOAKING_WALLS) {         //no more!
 520                         Int3();         //ran out of cloaking wall slots
 521                         w->type = WALL_OPEN;
 522                         Walls[csegp->sides[Connectside].wall_num].type = WALL_OPEN;
 523                         return;
 524                 }
 525                 Num_cloaking_walls++;
 526         }
 527         else {
 528                 Int3();         //unexpected wall state
 529                 return;
 530         }
 531
 532         w->state = WALL_DOOR_CLOAKING;
 533         Walls[csegp->sides[Connectside].wall_num].state = WALL_DOOR_CLOAKING;
 534
 535         d->front_wallnum = seg->sides[side].wall_num;
 536         d->back_wallnum = csegp->sides[Connectside].wall_num;
 537
 538         Assert( seg-Segments != -1);
 539
 540         Assert(w->linked_wall == -1);
 541
 542         if ( Newdemo_state != ND_STATE_PLAYBACK ) {
 543                 vms_vector cp;
 544                 compute_center_point_on_side(&cp, seg, side );
 545                 digi_link_sound_to_pos( SOUND_WALL_CLOAK_ON, seg-Segments, side, &cp, 0, F1_0 );
 546         }
 547
 548         for (i=0;i<4;i++) {
 549                 d->front_ls[i] = seg->sides[side].uvls[i].l;
 550                 d->back_ls[i] = csegp->sides[Connectside].uvls[i].l;
 551         }
 552 }
 553
 554 //-----------------------------------------------------------------
 555 // start the transition from open -> closed wall
 556 void start_wall_decloak(segment *seg, int side)
 557 {
 558         wall *w;
 559         cloaking_wall *d;
 560         int Connectside;
 561         segment *csegp;
 562         int i;
 563
 564         if ( Newdemo_state==ND_STATE_PLAYBACK ) return;
 565
 566         Assert(seg->sides[side].wall_num != -1);        //Opening door on illegal wall
 567
 568         w = &Walls[seg->sides[side].wall_num];
 569
 570         if (w->type == WALL_CLOSED || w->state == WALL_DOOR_DECLOAKING)         //already closed or decloaking
 571                 return;
 572
 573         if (w->state == WALL_DOOR_CLOAKING) {   //cloaking, so reuse door
 574
 575                 int i;
 576
 577                 d = NULL;
 578
 579                 for (i=0;i<Num_cloaking_walls;i++) {            //find door
 580
 581                         d = &CloakingWalls[i];
 582
 583                         if (d->front_wallnum==w-Walls || d->back_wallnum==w-Walls )
 584                                 break;
 585                 }
 586
 587                 Assert(i<Num_cloaking_walls);                           //didn't find door!
 588                 Assert( d!=NULL ); // Get John!
 589
 590                 d->time = CLOAKING_WALL_TIME - d->time;
 591
 592         }
 593         else if (w->state == WALL_DOOR_CLOSED) {        //create new door
 594                 d = &CloakingWalls[Num_cloaking_walls];
 595                 d->time = 0;
 596                 if (Num_cloaking_walls >= MAX_CLOAKING_WALLS) {         //no more!
 597                         Int3();         //ran out of cloaking wall slots
 598                         w->type = WALL_CLOSED;
 599                         Walls[csegp->sides[Connectside].wall_num].type = WALL_CLOSED;
 600                         return;
 601                 }
 602                 Num_cloaking_walls++;
 603         }
 604         else {
 605                 Int3();         //unexpected wall state
 606                 return;
 607         }
 608
 609         w->state = WALL_DOOR_DECLOAKING;
 610
 611         // So that door can't be shot while opening
 612         csegp = &Segments[seg->children[side]];
 613         Connectside = find_connect_side(seg, csegp);
 614         Assert(Connectside != -1);
 615
 616         Walls[csegp->sides[Connectside].wall_num].state = WALL_DOOR_DECLOAKING;
 617
 618         d->front_wallnum = seg->sides[side].wall_num;
 619         d->back_wallnum = csegp->sides[Connectside].wall_num;
 620
 621         Assert( seg-Segments != -1);
 622
 623         Assert(w->linked_wall == -1);
 624
 625         if ( Newdemo_state != ND_STATE_PLAYBACK ) {
 626                 vms_vector cp;
 627                 compute_center_point_on_side(&cp, seg, side );
 628                 digi_link_sound_to_pos( SOUND_WALL_CLOAK_OFF, seg-Segments, side, &cp, 0, F1_0 );
 629         }
 630
 631         for (i=0;i<4;i++) {
 632                 d->front_ls[i] = seg->sides[side].uvls[i].l;
 633                 d->back_ls[i] = csegp->sides[Connectside].uvls[i].l;
 634         }
 635 }
 636
 637 //-----------------------------------------------------------------
 638 // This function closes the specified door and restores the closed
 639 //  door texture.  This is called when the animation is done
 640 void wall_close_door_num(int door_num)
 641 {
 642         int p;
 643         active_door *d;
 644         int i;
 645
 646         d = &ActiveDoors[door_num];
 647
 648         for (p=0;p<d->n_parts;p++) {
 649                 wall *w;
 650                 int Connectside, side;
 651                 segment *csegp, *seg;
 652
 653                 w = &Walls[d->front_wallnum[p]];
 654
 655                 seg = &Segments[w->segnum];
 656                 side = w->sidenum;
 657
 658                 Assert(seg->sides[side].wall_num != -1);                //Closing door on illegal wall
 659
 660                 csegp = &Segments[seg->children[side]];
 661                 Connectside = find_connect_side(seg, csegp);
 662                 Assert(Connectside != -1);
 663
 664                 Walls[seg->sides[side].wall_num].state = WALL_DOOR_CLOSED;
 665                 Walls[csegp->sides[Connectside].wall_num].state = WALL_DOOR_CLOSED;
 666
 667                 wall_set_tmap_num(seg,side,csegp,Connectside,w->clip_num,0);
 668
 669         }
 670
 671         for (i=door_num;i<Num_open_doors;i++)
 672                 ActiveDoors[i] = ActiveDoors[i+1];
 673
 674         Num_open_doors--;
 675
 676 }
 677
 678 int check_poke(int objnum,int segnum,int side)
 679 {
 680         object *obj = &Objects[objnum];
 681
 682         //note: don't let objects with zero size block door
 683
 684         if (obj->size && get_seg_masks(&obj->pos,segnum,obj->size).sidemask & (1<<side))
 685                 return 1;               //pokes through side!
 686         else
 687                 return 0;               //does not!
 688
 689 }
 690
 691 //returns true of door in unobjstructed (& thus can close)
 692 int is_door_free(segment *seg,int side)
 693 {
 694         int Connectside;
 695         segment *csegp;
 696         int objnum;
 697
 698         csegp = &Segments[seg->children[side]];
 699         Connectside = find_connect_side(seg, csegp);
 700         Assert(Connectside != -1);
 701
 702         //go through each object in each of two segments, and see if
 703         //it pokes into the connecting seg
 704
 705         for (objnum=seg->objects;objnum!=-1;objnum=Objects[objnum].next)
 706                 if (Objects[objnum].type!=OBJ_WEAPON && Objects[objnum].type!=OBJ_FIREBALL && check_poke(objnum,seg-Segments,side))
 707                         return 0;       //not free
 708
 709         for (objnum=csegp->objects;objnum!=-1;objnum=Objects[objnum].next)
 710                 if (Objects[objnum].type!=OBJ_WEAPON && Objects[objnum].type!=OBJ_FIREBALL && check_poke(objnum,csegp-Segments,Connectside))
 711                         return 0;       //not free
 712
 713         return 1;       //doorway is free!
 714 }
 715
 716
 717
 718 //-----------------------------------------------------------------
 719 // Closes a door
 720 void wall_close_door(segment *seg, int side)
 721 {
 722         wall *w;
 723         active_door *d;
 724         int Connectside;
 725         segment *csegp;
 726
 727         Assert(seg->sides[side].wall_num != -1);        //Opening door on illegal wall
 728
 729         w = &Walls[seg->sides[side].wall_num];
 730
 731         if ((w->state == WALL_DOOR_CLOSING) ||          //already closing
 732                  (w->state == WALL_DOOR_WAITING)        ||              //open, waiting to close
 733                  (w->state == WALL_DOOR_CLOSED))                        //closed
 734                 return;
 735
 736         if (!is_door_free(seg,side))
 737                 return;
 738
 739         if (w->state == WALL_DOOR_OPENING) {    //reuse door
 740
 741                 int i;
 742
 743                 d = NULL;
 744
 745                 for (i=0;i<Num_open_doors;i++) {                //find door
 746
 747                         d = &ActiveDoors[i];
 748
 749                         if (d->front_wallnum[0]==w-Walls || d->back_wallnum[0]==w-Walls || (d->n_parts==2 && (d->front_wallnum[1]==w-Walls || d->back_wallnum[1]==w-Walls)))
 750                                 break;
 751                 }
 752
 753                 Assert(i<Num_open_doors);                               //didn't find door!
 754                 Assert( d!=NULL ); // Get John!
 755
 756                 d->time = WallAnims[w->clip_num].play_time - d->time;
 757
 758                 if (d->time < 0)
 759                         d->time = 0;
 760
 761         }
 762         else {                                                                                  //create new door
 763                 Assert(w->state == WALL_DOOR_OPEN);
 764                 d = &ActiveDoors[Num_open_doors];
 765                 d->time = 0;
 766                 Num_open_doors++;
 767                 Assert( Num_open_doors < MAX_DOORS );
 768         }
 769
 770         w->state = WALL_DOOR_CLOSING;
 771
 772         // So that door can't be shot while opening
 773         csegp = &Segments[seg->children[side]];
 774         Connectside = find_connect_side(seg, csegp);
 775         Assert(Connectside != -1);
 776
 777         Walls[csegp->sides[Connectside].wall_num].state = WALL_DOOR_CLOSING;
 778
 779         d->front_wallnum[0] = seg->sides[side].wall_num;
 780         d->back_wallnum[0] = csegp->sides[Connectside].wall_num;
 781
 782         Assert( seg-Segments != -1);
 783
 784         if (Newdemo_state == ND_STATE_RECORDING) {
 785                 newdemo_record_door_opening(seg-Segments, side);
 786         }
 787
 788         if (w->linked_wall != -1) {
 789                 Int3();         //don't think we ever used linked walls
 790         }
 791         else
 792                 d->n_parts = 1;
 793
 794
 795         if ( Newdemo_state != ND_STATE_PLAYBACK )
 796         {
 797                 // NOTE THE LINK TO ABOVE!!!!
 798                 vms_vector cp;
 799                 compute_center_point_on_side(&cp, seg, side );
 800                 if (WallAnims[w->clip_num].open_sound > -1 )
 801                         digi_link_sound_to_pos( WallAnims[w->clip_num].open_sound, seg-Segments, side, &cp, 0, F1_0 );
 802
 803         }
 804 }
 805
 806 //-----------------------------------------------------------------
 807 // Animates opening of a door.
 808 // Called in the game loop.
 809 void do_door_open(int door_num)
 810 {
 811         int p;
 812         active_door *d;
 813
 814         Assert(door_num != -1);         //Trying to do_door_open on illegal door
 815
 816         d = &ActiveDoors[door_num];
 817
 818         for (p=0;p<d->n_parts;p++) {
 819                 wall *w;
 820                 int Connectside, side;
 821                 segment *csegp, *seg;
 822                 fix time_elapsed, time_total, one_frame;
 823                 int i, n;
 824
 825                 w = &Walls[d->front_wallnum[p]];
 826                 kill_stuck_objects(d->front_wallnum[p]);
 827                 kill_stuck_objects(d->back_wallnum[p]);
 828
 829                 seg = &Segments[w->segnum];
 830                 side = w->sidenum;
 831
 832                 Assert(seg->sides[side].wall_num != -1);                //Trying to do_door_open on illegal wall
 833
 834                 csegp = &Segments[seg->children[side]];
 835                 Connectside = find_connect_side(seg, csegp);
 836                 Assert(Connectside != -1);
 837
 838                 d->time += FrameTime;
 839
 840                 time_elapsed = d->time;
 841                 n = WallAnims[w->clip_num].num_frames;
 842                 time_total = WallAnims[w->clip_num].play_time;
 843
 844                 one_frame = time_total/n;
 845
 846                 i = time_elapsed/one_frame;
 847
 848                 if (i < n)
 849                         wall_set_tmap_num(seg,side,csegp,Connectside,w->clip_num,i);
 850
 851                 if (i> n/2) {
 852                         Walls[seg->sides[side].wall_num].flags |= WALL_DOOR_OPENED;
 853                         Walls[csegp->sides[Connectside].wall_num].flags |= WALL_DOOR_OPENED;
 854                 }
 855
 856                 if (i >= n-1) {
 857                         wall_set_tmap_num(seg,side,csegp,Connectside,w->clip_num,n-1);
 858
 859                         // If our door is not automatic just remove it from the list.
 860                         if (!(Walls[seg->sides[side].wall_num].flags & WALL_DOOR_AUTO)) {
 861                                 for (i=door_num;i<Num_open_doors;i++)
 862                                         ActiveDoors[i] = ActiveDoors[i+1];
 863                                 Num_open_doors--;
 864                                 Walls[seg->sides[side].wall_num].state = WALL_DOOR_OPEN;
 865                                 Walls[csegp->sides[Connectside].wall_num].state = WALL_DOOR_OPEN;
 866                         }
 867                         else {
 868
 869                                 Walls[seg->sides[side].wall_num].state = WALL_DOOR_WAITING;
 870                                 Walls[csegp->sides[Connectside].wall_num].state = WALL_DOOR_WAITING;
 871
 872                                 ActiveDoors[Num_open_doors].time = 0;   //counts up
 873                         }
 874                 }
 875
 876         }
 877
 878 }
 879
 880 //-----------------------------------------------------------------
 881 // Animates and processes the closing of a door.
 882 // Called from the game loop.
 883 void do_door_close(int door_num)
 884 {
 885         int p;
 886         active_door *d;
 887         wall *w;
 888
 889         Assert(door_num != -1);         //Trying to do_door_open on illegal door
 890
 891         d = &ActiveDoors[door_num];
 892
 893         w = &Walls[d->front_wallnum[0]];
 894
 895         //check for objects in doorway before closing
 896         if (w->flags & WALL_DOOR_AUTO)
 897                 if (!is_door_free(&Segments[w->segnum],w->sidenum)) {
 898                         digi_kill_sound_linked_to_segment(w->segnum,w->sidenum,-1);
 899                         wall_open_door(&Segments[w->segnum],w->sidenum);                //re-open door
 900                         return;
 901                 }
 902
 903         for (p=0;p<d->n_parts;p++) {
 904                 wall *w;
 905                 int Connectside, side;
 906                 segment *csegp, *seg;
 907                 fix time_elapsed, time_total, one_frame;
 908                 int i, n;
 909
 910                 w = &Walls[d->front_wallnum[p]];
 911
 912                 seg = &Segments[w->segnum];
 913                 side = w->sidenum;
 914
 915                 if (seg->sides[side].wall_num == -1) {
 916                         mprintf((0, "Trying to do_door_close on Illegal wall\n"));
 917                         return;
 918                 }
 919
 920                 //if here, must be auto door
 921 //              Assert(Walls[seg->sides[side].wall_num].flags & WALL_DOOR_AUTO);
 922 //don't assert here, because now we have triggers to close non-auto doors
 923
 924                 // Otherwise, close it.
 925                 csegp = &Segments[seg->children[side]];
 926                 Connectside = find_connect_side(seg, csegp);
 927                 Assert(Connectside != -1);
 928
 929
 930                 if ( Newdemo_state != ND_STATE_PLAYBACK )
 931                         // NOTE THE LINK TO ABOVE!!
 932                         if (p==0)       //only play one sound for linked doors
 933                                 if ( d->time==0 )       {               //first time
 934                                         vms_vector cp;
 935                                         compute_center_point_on_side(&cp, seg, side );
 936                                         if (WallAnims[w->clip_num].close_sound  > -1 )
 937                                                 digi_link_sound_to_pos( WallAnims[Walls[seg->sides[side].wall_num].clip_num].close_sound, seg-Segments, side, &cp, 0, F1_0 );
 938                                 }
 939
 940                 d->time += FrameTime;
 941
 942                 time_elapsed = d->time;
 943                 n = WallAnims[w->clip_num].num_frames;
 944                 time_total = WallAnims[w->clip_num].play_time;
 945
 946                 one_frame = time_total/n;
 947
 948                 i = n-time_elapsed/one_frame-1;
 949
 950                 if (i < n/2) {
 951                         Walls[seg->sides[side].wall_num].flags &= ~WALL_DOOR_OPENED;
 952                         Walls[csegp->sides[Connectside].wall_num].flags &= ~WALL_DOOR_OPENED;
 953                 }
 954
 955                 // Animate door.
 956                 if (i > 0) {
 957                         wall_set_tmap_num(seg,side,csegp,Connectside,w->clip_num,i);
 958
 959                         Walls[seg->sides[side].wall_num].state = WALL_DOOR_CLOSING;
 960                         Walls[csegp->sides[Connectside].wall_num].state = WALL_DOOR_CLOSING;
 961
 962                         ActiveDoors[Num_open_doors].time = 0;           //counts up
 963
 964                 } else
 965                         wall_close_door_num(door_num);
 966         }
 967 }
 968
 969
 970 //-----------------------------------------------------------------
 971 // Turns off an illusionary wall (This will be used primarily for
 972 //  wall switches or triggers that can turn on/off illusionary walls.)
 973 void wall_illusion_off(segment *seg, int side)
 974 {
 975         segment *csegp;
 976         int cside;
 977
 978         csegp = &Segments[seg->children[side]];
 979         cside = find_connect_side(seg, csegp);
 980         Assert(cside != -1);
 981
 982         if (seg->sides[side].wall_num == -1) {
 983                 mprintf((0, "Trying to shut off illusion illegal wall\n"));
 984                 return;
 985         }
 986
 987         Walls[seg->sides[side].wall_num].flags |= WALL_ILLUSION_OFF;
 988         Walls[csegp->sides[cside].wall_num].flags |= WALL_ILLUSION_OFF;
 989
 990         kill_stuck_objects(seg->sides[side].wall_num);
 991         kill_stuck_objects(csegp->sides[cside].wall_num);
 992 }
 993
 994 //-----------------------------------------------------------------
 995 // Turns on an illusionary wall (This will be used primarily for
 996 //  wall switches or triggers that can turn on/off illusionary walls.)
 997 void wall_illusion_on(segment *seg, int side)
 998 {
 999         segment *csegp;
1000         int cside;
1001
1002         csegp = &Segments[seg->children[side]];
1003         cside = find_connect_side(seg, csegp);
1004         Assert(cside != -1);
1005
1006         if (seg->sides[side].wall_num == -1) {
1007                 mprintf((0, "Trying to turn on illusion illegal wall\n"));
1008                 return;
1009         }
1010
1011         Walls[seg->sides[side].wall_num].flags &= ~WALL_ILLUSION_OFF;
1012         Walls[csegp->sides[cside].wall_num].flags &= ~WALL_ILLUSION_OFF;
1013 }
1014
1015 //      -----------------------------------------------------------------------------
1016 //      Allowed to open the normally locked special boss door if in multiplayer mode.
1017 int special_boss_opening_allowed(int segnum, int sidenum)
1018 {
1019         if (Game_mode & GM_MULTI)
1020                 return (Current_level_num == BOSS_LOCKED_DOOR_LEVEL) && (segnum == BOSS_LOCKED_DOOR_SEG) && (sidenum == BOSS_LOCKED_DOOR_SIDE);
1021         else
1022                 return 0;
1023 }
1024
1025 //-----------------------------------------------------------------
1026 // Determines what happens when a wall is shot
1027 //returns info about wall.  see wall.h for codes
1028 //obj is the object that hit...either a weapon or the player himself
1029 //playernum is the number the player who hit the wall or fired the weapon,
1030 //or -1 if a robot fired the weapon
1031 int wall_hit_process(segment *seg, int side, fix damage, int playernum, object *obj )
1032 {
1033         wall    *w;
1034         fix     show_message;
1035
1036         Assert (seg-Segments != -1);
1037
1038         // If it is not a "wall" then just return.
1039         if ( seg->sides[side].wall_num < 0 )
1040                 return WHP_NOT_SPECIAL;
1041
1042         w = &Walls[seg->sides[side].wall_num];
1043
1044         if ( Newdemo_state == ND_STATE_RECORDING )
1045                 newdemo_record_wall_hit_process( seg-Segments, side, damage, playernum );
1046
1047         if (w->type == WALL_BLASTABLE) {
1048                 if (obj->ctype.laser_info.parent_type == OBJ_PLAYER)
1049                         wall_damage(seg, side, damage);
1050                 return WHP_BLASTABLE;
1051         }
1052
1053         if (playernum != Player_num)    //return if was robot fire
1054                 return WHP_NOT_SPECIAL;
1055
1056         Assert( playernum > -1 );
1057
1058         //      Determine whether player is moving forward.  If not, don't say negative
1059         //      messages because he probably didn't intentionally hit the door.
1060         if (obj->type == OBJ_PLAYER)
1061                 show_message = (vm_vec_dot(&obj->orient.fvec, &obj->mtype.phys_info.velocity) > 0);
1062         else if (obj->type == OBJ_ROBOT)
1063                 show_message = 0;
1064         else if ((obj->type == OBJ_WEAPON) && (obj->ctype.laser_info.parent_type == OBJ_ROBOT))
1065                 show_message = 0;
1066         else
1067                 show_message = 1;
1068
1069         if (w->keys == KEY_BLUE)
1070                 if (!(Players[playernum].flags & PLAYER_FLAGS_BLUE_KEY)) {
1071                         if ( playernum==Player_num )
1072                                 if (show_message)
1073                                         HUD_init_message("%s %s",TXT_BLUE,TXT_ACCESS_DENIED);
1074                         return WHP_NO_KEY;
1075                 }
1076
1077         if (w->keys == KEY_RED)
1078                 if (!(Players[playernum].flags & PLAYER_FLAGS_RED_KEY)) {
1079                         if ( playernum==Player_num )
1080                                 if (show_message)
1081                                         HUD_init_message("%s %s",TXT_RED,TXT_ACCESS_DENIED);
1082                         return WHP_NO_KEY;
1083                 }
1084
1085         if (w->keys == KEY_GOLD)
1086                 if (!(Players[playernum].flags & PLAYER_FLAGS_GOLD_KEY)) {
1087                         if ( playernum==Player_num )
1088                                 if (show_message)
1089                                         HUD_init_message("%s %s",TXT_YELLOW,TXT_ACCESS_DENIED);
1090                         return WHP_NO_KEY;
1091                 }
1092
1093         if (w->type == WALL_DOOR)
1094         {
1095                 if ((w->flags & WALL_DOOR_LOCKED ) && !(special_boss_opening_allowed(seg-Segments, side)) ) {
1096                         if ( playernum==Player_num )
1097                                 if (show_message)
1098                                         HUD_init_message(TXT_CANT_OPEN_DOOR);
1099                         return WHP_NO_KEY;
1100                 }
1101                 else {
1102                         if (w->state != WALL_DOOR_OPENING)
1103                         {
1104                                 wall_open_door(seg, side);
1105                         #ifdef NETWORK
1106                                 if (Game_mode & GM_MULTI)
1107                                         multi_send_door_open(seg-Segments, side,w->flags);
1108                         #endif
1109                         }
1110                         return WHP_DOOR;
1111
1112                 }
1113         }
1114
1115         return WHP_NOT_SPECIAL;         //default is treat like normal wall
1116 }
1117
1118 //-----------------------------------------------------------------
1119 // Opens doors/destroys wall/shuts off triggers.
1120 void wall_toggle(segment *seg, int side)
1121 {
1122         int wall_num;
1123
1124         Assert( seg-Segments <= Highest_segment_index);
1125         Assert( side < MAX_SIDES_PER_SEGMENT );
1126
1127         wall_num = seg->sides[side].wall_num;
1128
1129         if (wall_num == -1) {
1130                 mprintf((0, "Illegal wall_toggle\n"));
1131                 return;
1132         }
1133
1134         if ( Newdemo_state == ND_STATE_RECORDING )
1135                 newdemo_record_wall_toggle(seg-Segments, side );
1136
1137         if (Walls[wall_num].type == WALL_BLASTABLE)
1138                 wall_destroy(seg, side);
1139
1140         if ((Walls[wall_num].type == WALL_DOOR) && (Walls[wall_num].state == WALL_DOOR_CLOSED))
1141                 wall_open_door(seg, side);
1142
1143 }
1144
1145
1146 //-----------------------------------------------------------------
1147 // Tidy up Walls array for load/save purposes.
1148 void reset_walls()
1149 {
1150         int i;
1151
1152         if (Num_walls < 0) {
1153                 mprintf((0, "Illegal Num_walls\n"));
1154                 return;
1155         }
1156
1157         for (i=Num_walls;i<MAX_WALLS;i++) {
1158                 Walls[i].type = WALL_NORMAL;
1159                 Walls[i].flags = 0;
1160                 Walls[i].hps = 0;
1161                 Walls[i].trigger = -1;
1162                 Walls[i].clip_num = -1;
1163                 }
1164 }
1165
1166 void do_cloaking_wall_frame(int cloaking_wall_num)
1167 {
1168         cloaking_wall *d;
1169         wall *wfront,*wback;
1170
1171         if ( Newdemo_state==ND_STATE_PLAYBACK ) return;
1172
1173         d = &CloakingWalls[cloaking_wall_num];
1174         wfront = &Walls[d->front_wallnum];
1175         wback = &Walls[d->back_wallnum];
1176
1177         d->time += FrameTime;
1178
1179         if (d->time > CLOAKING_WALL_TIME) {
1180                 int i;
1181
1182                 wfront->type = wback->type = WALL_OPEN;
1183                 wfront->state = wback->state = WALL_DOOR_CLOSED;                //why closed? why not?
1184
1185                 for (i=cloaking_wall_num;i<Num_cloaking_walls;i++)
1186                         CloakingWalls[i] = CloakingWalls[i+1];
1187                 Num_cloaking_walls--;
1188
1189         }
1190         else if (d->time > CLOAKING_WALL_TIME/2) {
1191                 int old_type=wfront->type;
1192
1193                 wfront->cloak_value = wback->cloak_value = ((d->time - CLOAKING_WALL_TIME/2) * (GR_FADE_LEVELS-2)) / (CLOAKING_WALL_TIME/2);
1194
1195                 if (old_type != WALL_CLOAKED) {         //just switched
1196                         int i;
1197
1198                         wfront->type = wback->type = WALL_CLOAKED;
1199
1200                         for (i=0;i<4;i++) {
1201                                 Segments[wfront->segnum].sides[wfront->sidenum].uvls[i].l = d->front_ls[i];
1202                                 Segments[wback->segnum].sides[wback->sidenum].uvls[i].l = d->back_ls[i];
1203                         }
1204                 }
1205         }
1206         else {          //fading out
1207                 fix light_scale;
1208                 int i;
1209
1210                 light_scale = fixdiv(CLOAKING_WALL_TIME/2-d->time,CLOAKING_WALL_TIME/2);
1211
1212                 for (i=0;i<4;i++) {
1213                         Segments[wfront->segnum].sides[wfront->sidenum].uvls[i].l = fixmul(d->front_ls[i],light_scale);
1214                         Segments[wback->segnum].sides[wback->sidenum].uvls[i].l = fixmul(d->back_ls[i],light_scale);
1215                 }
1216         }
1217
1218         if ( Newdemo_state == ND_STATE_RECORDING )
1219                 newdemo_record_cloaking_wall(d->front_wallnum, d->back_wallnum, wfront->type, wfront->state, wfront->cloak_value, Segments[wfront->segnum].sides[wfront->sidenum].uvls[0].l, Segments[wfront->segnum].sides[wfront->sidenum].uvls[1].l, Segments[wfront->segnum].sides[wfront->sidenum].uvls[2].l, Segments[wfront->segnum].sides[wfront->sidenum].uvls[3].l);
1220
1221 }
1222
1223 void do_decloaking_wall_frame(int cloaking_wall_num)
1224 {
1225         cloaking_wall *d;
1226         wall *wfront,*wback;
1227
1228         if ( Newdemo_state==ND_STATE_PLAYBACK ) return;
1229
1230         d = &CloakingWalls[cloaking_wall_num];
1231         wfront = &Walls[d->front_wallnum];
1232         wback = &Walls[d->back_wallnum];
1233
1234         d->time += FrameTime;
1235
1236         if (d->time > CLOAKING_WALL_TIME) {
1237                 int i;
1238
1239                 wfront->state = wback->state = WALL_DOOR_CLOSED;
1240
1241                 for (i=0;i<4;i++) {
1242                         Segments[wfront->segnum].sides[wfront->sidenum].uvls[i].l = d->front_ls[i];
1243                         Segments[wback->segnum].sides[wback->sidenum].uvls[i].l = d->back_ls[i];
1244                 }
1245
1246                 for (i=cloaking_wall_num;i<Num_cloaking_walls;i++)
1247                         CloakingWalls[i] = CloakingWalls[i+1];
1248                 Num_cloaking_walls--;
1249
1250         }
1251         else if (d->time > CLOAKING_WALL_TIME/2) {              //fading in
1252                 fix light_scale;
1253                 int i;
1254
1255                 wfront->type = wback->type = WALL_CLOSED;
1256
1257                 light_scale = fixdiv(d->time-CLOAKING_WALL_TIME/2,CLOAKING_WALL_TIME/2);
1258
1259                 for (i=0;i<4;i++) {
1260                         Segments[wfront->segnum].sides[wfront->sidenum].uvls[i].l = fixmul(d->front_ls[i],light_scale);
1261                         Segments[wback->segnum].sides[wback->sidenum].uvls[i].l = fixmul(d->back_ls[i],light_scale);
1262                 }
1263         }
1264         else {          //cloaking in
1265                 wfront->cloak_value = wback->cloak_value = ((CLOAKING_WALL_TIME/2 - d->time) * (GR_FADE_LEVELS-2)) / (CLOAKING_WALL_TIME/2);
1266                 wfront->type = wback->type = WALL_CLOAKED;
1267         }
1268
1269         if ( Newdemo_state == ND_STATE_RECORDING )
1270                 newdemo_record_cloaking_wall(d->front_wallnum, d->back_wallnum, wfront->type, wfront->state, wfront->cloak_value, Segments[wfront->segnum].sides[wfront->sidenum].uvls[0].l, Segments[wfront->segnum].sides[wfront->sidenum].uvls[1].l, Segments[wfront->segnum].sides[wfront->sidenum].uvls[2].l, Segments[wfront->segnum].sides[wfront->sidenum].uvls[3].l);
1271
1272 }
1273
1274 void wall_frame_process()
1275 {
1276         int i;
1277
1278         for (i=0;i<Num_open_doors;i++) {
1279                 active_door *d;
1280                 wall *w;
1281
1282                 d = &ActiveDoors[i];
1283                 w = &Walls[d->front_wallnum[0]];
1284
1285                 if (w->state == WALL_DOOR_OPENING)
1286                         do_door_open(i);
1287                 else if (w->state == WALL_DOOR_CLOSING)
1288                         do_door_close(i);
1289                 else if (w->state == WALL_DOOR_WAITING) {
1290                         d->time += FrameTime;
1291
1292                         //set flags to fix occatsional netgame problem where door is
1293                         //waiting to close but open flag isn't set
1294                         Assert(d->n_parts == 1);
1295                         w->flags |= WALL_DOOR_OPENED;
1296                         Walls[d->back_wallnum[0]].flags |= WALL_DOOR_OPENED;
1297
1298                         if (d->time > DOOR_WAIT_TIME && is_door_free(&Segments[w->segnum],w->sidenum)) {
1299                                 w->state = WALL_DOOR_CLOSING;
1300                                 d->time = 0;
1301                         }
1302                 }
1303                 else if (w->state == WALL_DOOR_CLOSED || w->state == WALL_DOOR_OPEN) {
1304                         //this shouldn't happen.  if the wall is in one of these states,
1305                         //there shouldn't be an activedoor entry for it.  So we'll kill
1306                         //the activedoor entry.  Tres simple.
1307                         int t;
1308                         Int3();         //a bad thing has happened, but I'll try to fix it up
1309                         for (t=i;t<Num_open_doors;t++)
1310                                 ActiveDoors[t] = ActiveDoors[t+1];
1311                         Num_open_doors--;
1312                 }
1313         }
1314
1315         for (i=0;i<Num_cloaking_walls;i++) {
1316                 cloaking_wall *d;
1317                 wall *w;
1318
1319                 d = &CloakingWalls[i];
1320                 w = &Walls[d->front_wallnum];
1321
1322                 if (w->state == WALL_DOOR_CLOAKING)
1323                         do_cloaking_wall_frame(i);
1324                 else if (w->state == WALL_DOOR_DECLOAKING)
1325                         do_decloaking_wall_frame(i);
1326                 else
1327                         Int3(); //unexpected wall state
1328         }
1329 }
1330
1331 int     Num_stuck_objects=0;
1332
1333 stuckobj        Stuck_objects[MAX_STUCK_OBJECTS];
1334
1335 //      An object got stuck in a door (like a flare).
1336 //      Add global entry.
1337 void add_stuck_object(object *objp, int segnum, int sidenum)
1338 {
1339         int     i;
1340         int     wallnum;
1341
1342         wallnum = Segments[segnum].sides[sidenum].wall_num;
1343
1344         if (wallnum != -1) {
1345                 if (Walls[wallnum].flags & WALL_BLASTED)
1346                         objp->flags |= OF_SHOULD_BE_DEAD;
1347
1348                 for (i=0; i<MAX_STUCK_OBJECTS; i++) {
1349                         if (Stuck_objects[i].wallnum == -1) {
1350                                 Stuck_objects[i].wallnum = wallnum;
1351                                 Stuck_objects[i].objnum = objp-Objects;
1352                                 Stuck_objects[i].signature = objp->signature;
1353                                 // mprintf((0, "Added wall %i at index %i\n", wallnum, i));
1354                                 Num_stuck_objects++;
1355                                 break;
1356                         }
1357                 }
1358                 if (i == MAX_STUCK_OBJECTS)
1359                         mprintf((1, "Warning: Unable to add object %i which got stuck in wall %i to Stuck_objects\n", objp-Objects, wallnum));
1360         }
1361
1362
1363
1364 }
1365
1366 //      --------------------------------------------------------------------------------------------------
1367 //      Look at the list of stuck objects, clean up in case an object has gone away, but not been removed here.
1368 //      Removes up to one/frame.
1369 void remove_obsolete_stuck_objects(void)
1370 {
1371         int     objnum;
1372
1373         //      Safety and efficiency code.  If no stuck objects, should never get inside the IF, but this is faster.
1374         if (!Num_stuck_objects)
1375                 return;
1376
1377         objnum = FrameCount % MAX_STUCK_OBJECTS;
1378
1379         if (Stuck_objects[objnum].wallnum != -1)
1380                 if ((Walls[Stuck_objects[objnum].wallnum].state != WALL_DOOR_CLOSED) || (Objects[Stuck_objects[objnum].objnum].signature != Stuck_objects[objnum].signature)) {
1381                         Num_stuck_objects--;
1382                         Objects[Stuck_objects[objnum].objnum].lifeleft = F1_0/8;
1383                         Stuck_objects[objnum].wallnum = -1;
1384                 }
1385
1386 }
1387
1388 extern void flush_fcd_cache(void);
1389
1390 //      ----------------------------------------------------------------------------------------------------
1391 //      Door with wall index wallnum is opening, kill all objects stuck in it.
1392 void kill_stuck_objects(int wallnum)
1393 {
1394         int     i;
1395
1396         if (Num_stuck_objects == 0) {
1397                 return;
1398         }
1399
1400         Num_stuck_objects=0;
1401
1402         for (i=0; i<MAX_STUCK_OBJECTS; i++)
1403                 if (Stuck_objects[i].wallnum == wallnum) {
1404                         if (Objects[Stuck_objects[i].objnum].type == OBJ_WEAPON) {
1405                                 Objects[Stuck_objects[i].objnum].lifeleft = F1_0/8;
1406                         } else
1407                                 mprintf((1, "Warning: Stuck object of type %i, expected to be of type %i, see wall.c\n", Objects[Stuck_objects[i].objnum].type, OBJ_WEAPON));
1408                                 // Int3();      //      What?  This looks bad.  Object is not a weapon and it is stuck in a wall!
1409                         Stuck_objects[i].wallnum = -1;
1410                 } else if (Stuck_objects[i].wallnum != -1) {
1411                         Num_stuck_objects++;
1412                 }
1413         //      Ok, this is awful, but we need to do things whenever a door opens/closes/disappears, etc.
1414         flush_fcd_cache();
1415
1416 }
1417
1418
1419 // -- unused -- // -----------------------------------------------------------------------------------
1420 // -- unused -- //      Return object id of first flare found embedded in segp:sidenum.
1421 // -- unused -- //      If no flare, return -1.
1422 // -- unused -- int contains_flare(segment *segp, int sidenum)
1423 // -- unused -- {
1424 // -- unused --         int     i;
1425 // -- unused --
1426 // -- unused --         for (i=0; i<Num_stuck_objects; i++) {
1427 // -- unused --                 object  *objp = &Objects[Stuck_objects[i].objnum];
1428 // -- unused --
1429 // -- unused --                 if ((objp->type == OBJ_WEAPON) && (objp->id == FLARE_ID)) {
1430 // -- unused --                         if (Walls[Stuck_objects[i].wallnum].segnum == segp-Segments)
1431 // -- unused --                                 if (Walls[Stuck_objects[i].wallnum].sidenum == sidenum)
1432 // -- unused --                                         return objp-Objects;
1433 // -- unused --                 }
1434 // -- unused --         }
1435 // -- unused --
1436 // -- unused --         return -1;
1437 // -- unused -- }
1438
1439 // -----------------------------------------------------------------------------------
1440 // Initialize stuck objects array.  Called at start of level
1441 void init_stuck_objects(void)
1442 {
1443         int     i;
1444
1445         for (i=0; i<MAX_STUCK_OBJECTS; i++)
1446                 Stuck_objects[i].wallnum = -1;
1447
1448         Num_stuck_objects = 0;
1449 }
1450
1451 // -----------------------------------------------------------------------------------
1452 // Clear out all stuck objects.  Called for a new ship
1453 void clear_stuck_objects(void)
1454 {
1455         int     i;
1456
1457         for (i=0; i<MAX_STUCK_OBJECTS; i++) {
1458                 if (Stuck_objects[i].wallnum != -1) {
1459                         int     objnum;
1460
1461                         objnum = Stuck_objects[i].objnum;
1462
1463                         if ((Objects[objnum].type == OBJ_WEAPON) && (Objects[objnum].id == FLARE_ID))
1464                                 Objects[objnum].lifeleft = F1_0/8;
1465
1466                         Stuck_objects[i].wallnum = -1;
1467
1468                         Num_stuck_objects--;
1469                 }
1470         }
1471
1472         Assert(Num_stuck_objects == 0);
1473
1474 }
1475
1476 // -----------------------------------------------------------------------------------
1477 #define MAX_BLAST_GLASS_DEPTH   5
1478
1479 void bng_process_segment(object *objp, fix damage, segment *segp, int depth, byte *visited)
1480 {
1481         int     i, sidenum;
1482
1483         if (depth > MAX_BLAST_GLASS_DEPTH)
1484                 return;
1485
1486         depth++;
1487
1488         for (sidenum=0; sidenum<MAX_SIDES_PER_SEGMENT; sidenum++) {
1489                 int                     tm;
1490                 fix                     dist;
1491                 vms_vector      pnt;
1492
1493                 //      Process only walls which have glass.
1494                 if ((tm=segp->sides[sidenum].tmap_num2) != 0) {
1495                         int     ec, db;
1496
1497                         tm &= 0x3fff;                   //tm without flags
1498
1499                         if ((((ec=TmapInfo[tm].eclip_num)!=-1) && ((db=Effects[ec].dest_bm_num)!=-1 && !(Effects[ec].flags&EF_ONE_SHOT))) ||    (ec==-1 && (TmapInfo[tm].destroyed!=-1))) {
1500                                 compute_center_point_on_side(&pnt, segp, sidenum);
1501                                 dist = vm_vec_dist_quick(&pnt, &objp->pos);
1502                                 if (dist < damage/2) {
1503                                         dist = find_connected_distance(&pnt, segp-Segments, &objp->pos, objp->segnum, MAX_BLAST_GLASS_DEPTH, WID_RENDPAST_FLAG);
1504                                         if ((dist > 0) && (dist < damage/2))
1505                                                 check_effect_blowup(segp, sidenum, &pnt, &Objects[objp->ctype.laser_info.parent_num], 1);
1506                                 }
1507                         }
1508                 }
1509         }
1510
1511         for (i=0; i<MAX_SIDES_PER_SEGMENT; i++) {
1512                 int     segnum = segp->children[i];
1513
1514                 if (segnum != -1) {
1515                         if (!visited[segnum]) {
1516                                 if (WALL_IS_DOORWAY(segp, i) & WID_FLY_FLAG) {
1517                                         visited[segnum] = 1;
1518                                         bng_process_segment(objp, damage, &Segments[segnum], depth, visited);
1519                                 }
1520                         }
1521                 }
1522         }
1523 }
1524
1525 // -----------------------------------------------------------------------------------
1526 //      objp is going to detonate
1527 //      blast nearby monitors, lights, maybe other things
1528 void blast_nearby_glass(object *objp, fix damage)
1529 {
1530         int             i;
1531         byte            visited[MAX_SEGMENTS];
1532         segment *cursegp;
1533
1534         cursegp = &Segments[objp->segnum];
1535         for (i=0; i<=Highest_segment_index; i++)
1536                 visited[i] = 0;
1537
1538         visited[objp->segnum] = 1;
1539         bng_process_segment(objp, damage, cursegp, 0, visited);
1540
1541
1542 }
1543