main/endlevel.c

   1 /* $Id: endlevel.c,v 1.22 2004-08-29 17:57:23 schaffner Exp $ */
   2 /*
   3 THE COMPUTER CODE CONTAINED HEREIN IS THE SOLE PROPERTY OF PARALLAX
   4 SOFTWARE CORPORATION ("PARALLAX").  PARALLAX, IN DISTRIBUTING THE CODE TO
   5 END-USERS, AND SUBJECT TO ALL OF THE TERMS AND CONDITIONS HEREIN, GRANTS A
   6 ROYALTY-FREE, PERPETUAL LICENSE TO SUCH END-USERS FOR USE BY SUCH END-USERS
   7 IN USING, DISPLAYING,  AND CREATING DERIVATIVE WORKS THEREOF, SO LONG AS
   8 SUCH USE, DISPLAY OR CREATION IS FOR NON-COMMERCIAL, ROYALTY OR REVENUE
   9 FREE PURPOSES.  IN NO EVENT SHALL THE END-USER USE THE COMPUTER CODE
  10 CONTAINED HEREIN FOR REVENUE-BEARING PURPOSES.  THE END-USER UNDERSTANDS
  11 AND AGREES TO THE TERMS HEREIN AND ACCEPTS THE SAME BY USE OF THIS FILE.
  12 COPYRIGHT 1993-1999 PARALLAX SOFTWARE CORPORATION.  ALL RIGHTS RESERVED.
  13 */
  14
  15 /*
  16  *
  17  * Code for rendering external scenes
  18  *
  19  */
  20
  21 #ifdef HAVE_CONFIG_H
  22 #include <conf.h>
  23 #endif
  24
  25 #ifdef RCS
  26 static char rcsid[] = "$Id: endlevel.c,v 1.22 2004-08-29 17:57:23 schaffner Exp $";
  27 #endif
  28
  29 //#define SLEW_ON 1
  30
  31 //#define _MARK_ON
  32
  33 #include <stdlib.h>
  34
  35
  36 #include <stdio.h>
  37 #include <string.h>
  38 #include <ctype.h> // for isspace
  39
  40 #include "fix.h"
  41 #include "vecmat.h"
  42 #include "gr.h"
  43 #include "3d.h"
  44 #include "error.h"
  45 #include "palette.h"
  46 #include "iff.h"
  47 #include "mono.h"
  48 #include "texmap.h"
  49 #include "fvi.h"
  50 #include "u_mem.h"
  51 #include "sounds.h"
  52
  53 #include "inferno.h"
  54 #include "endlevel.h"
  55 #include "object.h"
  56 #include "game.h"
  57 #include "screens.h"
  58 #include "gauges.h"
  59 #include "wall.h"
  60 #include "terrain.h"
  61 #include "polyobj.h"
  62 #include "bm.h"
  63 #include "gameseq.h"
  64 #include "newdemo.h"
  65 #include "multi.h"
  66 #include "vclip.h"
  67 #include "fireball.h"
  68 #ifdef NETWORK
  69 #include "network.h"
  70 #endif
  71 #include "text.h"
  72 #include "digi.h"
  73 #include "cfile.h"
  74 #include "compbit.h"
  75 #include "songs.h"
  76 #include "movie.h"
  77 #include "render.h"
  78
  79 typedef struct flythrough_data {
  80         object          *obj;
  81         vms_angvec      angles;                 //orientation in angles
  82         vms_vector      step;                           //how far in a second
  83         vms_vector      angstep;                        //rotation per second
  84         fix                     speed;                  //how fast object is moving
  85         vms_vector      headvec;                        //where we want to be pointing
  86         int                     first_time;             //flag for if first time through
  87         fix                     offset_frac;    //how far off-center as portion of way
  88         fix                     offset_dist;    //how far currently off-center
  89 } flythrough_data;
  90
  91 //endlevel sequence states
  92
  93 #define EL_OFF                          0               //not in endlevel
  94 #define EL_FLYTHROUGH   1               //auto-flythrough in tunnel
  95 #define EL_LOOKBACK             2               //looking back at player
  96 #define EL_OUTSIDE              3               //flying outside for a while
  97 #define EL_STOPPED              4               //stopped, watching explosion
  98 #define EL_PANNING              5               //panning around, watching player
  99 #define EL_CHASING              6               //chasing player to station
 100
 101 #define SHORT_SEQUENCE  1               //if defined, end sequnce when panning starts
 102 //#define STATION_ENABLED       1               //if defined, load & use space station model
 103
 104 int Endlevel_sequence = 0;
 105
 106 extern fix player_speed;
 107
 108 int transition_segnum,exit_segnum;
 109
 110 object *endlevel_camera;
 111
 112 #define FLY_SPEED i2f(50)
 113
 114 void do_endlevel_flythrough(int n);
 115 void draw_stars();
 116 int find_exit_side(object *obj);
 117 void generate_starfield();
 118 void start_endlevel_flythrough(int n,object *obj,fix speed);
 119 void start_rendered_endlevel_sequence();
 120
 121 #ifdef D2_OEM
 122 char movie_table[] =    {       'a','a','a','a','d','d','d','d' };
 123 #else
 124 char movie_table[] =    {       'a','b','c',
 125                                                 #ifndef SHAREWARE
 126                                                         'a',
 127                                                         'd','f','d','f',
 128                                                         'g','h','i','g',
 129                                                         'j','k','l','j',
 130                                                         'm','o','m','o',
 131                                                         'p','q','p','q'
 132                                                 #endif
 133                                         };
 134 #endif
 135
 136 #define N_MOVIES (sizeof(movie_table) / sizeof(*movie_table))
 137
 138 #ifndef SHAREWARE
 139 #ifdef D2_OEM
 140 char movie_table_secret[] = {'a','d'};
 141 #else
 142 char movie_table_secret[] = {'a','d','g','j','m','p'};
 143 #endif
 144 #define N_MOVIES_SECRET (sizeof(movie_table_secret) / sizeof(*movie_table_secret))
 145 #else
 146 #define N_MOVIES_SECRET 0
 147 #endif
 148
 149
 150 #define FLY_ACCEL i2f(5)
 151
 152 fix cur_fly_speed,desired_fly_speed;
 153
 154 extern int matt_find_connect_side(int seg0,int seg1);
 155
 156 grs_bitmap *satellite_bitmap,*station_bitmap,*terrain_bitmap;   //!!*exit_bitmap,
 157 vms_vector satellite_pos,satellite_upvec;
 158 //!!grs_bitmap **exit_bitmap_list[1];
 159 int station_modelnum,exit_modelnum,destroyed_exit_modelnum;
 160
 161 vms_vector station_pos = {0xf8c4<<10,0x3c1c<<12,0x372<<10};
 162
 163 #ifdef STATION_ENABLED
 164 grs_bitmap *station_bitmap;
 165 grs_bitmap **station_bitmap_list[1];
 166 int station_modelnum;
 167 #endif
 168
 169 vms_vector mine_exit_point;
 170 vms_vector mine_ground_exit_point;
 171 vms_vector mine_side_exit_point;
 172 vms_matrix mine_exit_orient;
 173
 174 int outside_mine;
 175
 176 grs_bitmap terrain_bm_instance;
 177 grs_bitmap satellite_bm_instance;
 178
 179 //find delta between two angles
 180 fixang delta_ang(fixang a,fixang b)
 181 {
 182         fixang delta0,delta1;
 183
 184         return (abs(delta0 = a - b) < abs(delta1 = b - a)) ? delta0 : delta1;
 185
 186 }
 187
 188 //return though which side of seg0 is seg1
 189 int matt_find_connect_side(int seg0,int seg1)
 190 {
 191         segment *Seg=&Segments[seg0];
 192         int i;
 193
 194         for (i=MAX_SIDES_PER_SEGMENT;i--;) if (Seg->children[i]==seg1) return i;
 195
 196         return -1;
 197 }
 198
 199 extern int Kmatrix_nomovie_message;
 200
 201 #if defined(D2_OEM) || defined(COMPILATION)
 202 #define MOVIE_REQUIRED 0
 203 #else
 204 #define MOVIE_REQUIRED 1
 205 #endif
 206
 207 //returns movie played status.  see movie.h
 208 int start_endlevel_movie()
 209 {
 210         char movie_name[] = "esa.mve";
 211         int r;
 212         ubyte save_pal[768];
 213
 214         //Assert(Current_mission_num == Builtin_mission_num);   //only play movie for built-in mission
 215
 216         //Assert(N_MOVIES >= Last_level);
 217         //Assert(N_MOVIES_SECRET >= -Last_secret_level);
 218
 219         if (!is_D2_OEM)
 220                 if (Current_level_num == Last_level)
 221                         return 1;   //don't play movie
 222
 223         if (Current_level_num > 0)
 224                 movie_name[2] = movie_table[Current_level_num-1];
 225         else {
 226                 #ifndef SHAREWARE
 227                         return 0;       //no escapes for secret level
 228                 #else
 229                         Error("Invalid level number <%d>",Current_level_num);
 230                 #endif
 231         }
 232
 233         memcpy(save_pal,gr_palette,768);
 234
 235         #ifndef SHAREWARE
 236                 r=PlayMovie(movie_name,(Game_mode & GM_MULTI)?0:MOVIE_REQUIRED);
 237         #else
 238                 return  0;      // movie not played for shareware
 239         #endif
 240
 241         if (Newdemo_state == ND_STATE_PLAYBACK) {
 242                 set_screen_mode(SCREEN_GAME);
 243                 memcpy(gr_palette,save_pal,768);
 244         }
 245
 246 #ifdef NETWORK
 247    if (r==MOVIE_NOT_PLAYED && (Game_mode & GM_MULTI))
 248           Kmatrix_nomovie_message=1;
 249         else
 250           Kmatrix_nomovie_message=0;
 251 #endif
 252
 253         return (r);
 254
 255 }
 256
 257 void
 258 free_endlevel_data()
 259 {
 260         if (terrain_bm_instance.bm_data)
 261                 d_free(terrain_bm_instance.bm_data);
 262
 263         if (satellite_bm_instance.bm_data)
 264                 d_free(satellite_bm_instance.bm_data);
 265 }
 266
 267 void init_endlevel()
 268 {
 269         //##satellite_bitmap = bm_load("earth.bbm");
 270         //##terrain_bitmap = bm_load("moon.bbm");
 271         //##
 272         //##load_terrain("matt5b.bbm");         //load bitmap as height array
 273         //##//load_terrain("ttest2.bbm");               //load bitmap as height array
 274
 275         #ifdef STATION_ENABLED
 276         station_bitmap = bm_load("steel3.bbm");
 277         station_bitmap_list[0] = &station_bitmap;
 278
 279         station_modelnum = load_polygon_model("station.pof",1,station_bitmap_list,NULL);
 280         #endif
 281
 282 //!!    exit_bitmap = bm_load("steel1.bbm");
 283 //!!    exit_bitmap_list[0] = &exit_bitmap;
 284
 285 //!!    exit_modelnum = load_polygon_model("exit01.pof",1,exit_bitmap_list,NULL);
 286 //!!    destroyed_exit_modelnum = load_polygon_model("exit01d.pof",1,exit_bitmap_list,NULL);
 287
 288         generate_starfield();
 289
 290         atexit(free_endlevel_data);
 291
 292         terrain_bm_instance.bm_data = satellite_bm_instance.bm_data = NULL;
 293 }
 294
 295 object external_explosion;
 296 int ext_expl_playing,mine_destroyed;
 297
 298 extern fix flash_scale;
 299
 300 vms_angvec exit_angles={-0xa00,0,0};
 301
 302 vms_matrix surface_orient;
 303
 304 int endlevel_data_loaded=0;
 305 extern char last_palette_loaded[];
 306
 307 void start_endlevel_sequence()
 308 {
 309         int     i;
 310         int movie_played = MOVIE_NOT_PLAYED;
 311
 312         if (Newdemo_state == ND_STATE_RECORDING)                // stop demo recording
 313                 Newdemo_state = ND_STATE_PAUSED;
 314
 315         if (Newdemo_state == ND_STATE_PLAYBACK) {               // don't do this if in playback mode
 316                 if (Current_mission_num == Builtin_mission_num) //only play movie for built-in mission
 317                         start_endlevel_movie();
 318                 strcpy(last_palette_loaded,"");         //force palette load next time
 319                 return;
 320         }
 321
 322         if (Player_is_dead || ConsoleObject->flags&OF_SHOULD_BE_DEAD)
 323                 return;                         //don't start if dead!
 324
 325         //      Dematerialize Buddy!
 326         for (i=0; i<=Highest_object_index; i++)
 327                 if (Objects[i].type == OBJ_ROBOT)
 328                         if (Robot_info[Objects[i].id].companion) {
 329                                 object_create_explosion(Objects[i].segnum, &Objects[i].pos, F1_0*7/2, VCLIP_POWERUP_DISAPPEARANCE );
 330                                 Objects[i].flags |= OF_SHOULD_BE_DEAD;
 331                         }
 332
 333         Players[Player_num].homing_object_dist = -F1_0; // Turn off homing sound.
 334
 335         reset_rear_view();              //turn off rear view if set
 336
 337 #ifdef NETWORK
 338         if (Game_mode & GM_MULTI) {
 339                 multi_send_endlevel_start(0);
 340                 network_do_frame(1, 1);
 341         }
 342 #endif
 343
 344         if (Current_mission_num == Builtin_mission_num) {
 345                 // only play movie for built-in mission
 346                 if (!(Game_mode & GM_MULTI))
 347                         movie_played = start_endlevel_movie();
 348         }
 349
 350         if (!(Game_mode & GM_MULTI) && (movie_played == MOVIE_NOT_PLAYED) && endlevel_data_loaded)
 351         {   //don't have movie.  Do rendered sequence, if available
 352                 int exit_models_loaded = 0;
 353
 354                 if (Piggy_hamfile_version < 3)
 355                         exit_models_loaded = 1; // built-in for PC shareware
 356
 357                 else
 358                         exit_models_loaded = load_exit_models();
 359
 360 #ifndef WINDOWS
 361                 if (exit_models_loaded)
 362                 {
 363                         start_rendered_endlevel_sequence();
 364                         return;
 365                 }
 366 #endif
 367         }
 368
 369         //don't have movie or rendered sequence, fade out
 370         gr_palette_fade_out(gr_palette, 32, 0);
 371
 372         PlayerFinishedLevel(0);         //done with level
 373 }
 374
 375 static int cockpit_mode_save;
 376
 377 void start_rendered_endlevel_sequence()
 378 {
 379         int last_segnum,exit_side,tunnel_length;
 380
 381         {
 382                 int segnum,old_segnum,entry_side,i;
 383
 384                 //count segments in exit tunnel
 385
 386                 old_segnum = ConsoleObject->segnum;
 387                 exit_side = find_exit_side(ConsoleObject);
 388                 segnum = Segments[old_segnum].children[exit_side];
 389                 tunnel_length = 0;
 390                 do {
 391                         entry_side = matt_find_connect_side(segnum,old_segnum);
 392                         exit_side = Side_opposite[entry_side];
 393                         old_segnum = segnum;
 394                         segnum = Segments[segnum].children[exit_side];
 395                         tunnel_length++;
 396                 } while (segnum >= 0);
 397
 398                 if (segnum != -2) {
 399                         PlayerFinishedLevel(0);         //don't do special sequence
 400                         return;
 401                 }
 402
 403                 last_segnum = old_segnum;
 404
 405                 //now pick transition segnum 1/3 of the way in
 406
 407                 old_segnum = ConsoleObject->segnum;
 408                 exit_side = find_exit_side(ConsoleObject);
 409                 segnum = Segments[old_segnum].children[exit_side];
 410                 i=tunnel_length/3;
 411                 while (i--) {
 412
 413                         entry_side = matt_find_connect_side(segnum,old_segnum);
 414                         exit_side = Side_opposite[entry_side];
 415                         old_segnum = segnum;
 416                         segnum = Segments[segnum].children[exit_side];
 417                 }
 418                 transition_segnum = segnum;
 419
 420         }
 421
 422         cockpit_mode_save = Cockpit_mode;
 423
 424         #ifdef NETWORK
 425         if (Game_mode & GM_MULTI) {
 426                 multi_send_endlevel_start(0);
 427                 network_do_frame(1, 1);
 428         }
 429         #endif
 430
 431         #ifdef SHAREWARE
 432         Assert(last_segnum == exit_segnum);
 433         //      songs_play_song( SONG_ENDLEVEL, 0 );    // JTS: Until we get an exit song, just don't worry
 434         #endif
 435
 436         Endlevel_sequence = EL_FLYTHROUGH;
 437
 438         ConsoleObject->movement_type = MT_NONE;                 //movement handled by flythrough
 439         ConsoleObject->control_type = CT_NONE;
 440
 441         Game_suspended |= SUSP_ROBOTS;          //robots don't move
 442
 443         cur_fly_speed = desired_fly_speed = FLY_SPEED;
 444
 445         start_endlevel_flythrough(0,ConsoleObject,cur_fly_speed);               //initialize
 446
 447         HUD_init_message( TXT_EXIT_SEQUENCE );
 448
 449         outside_mine = ext_expl_playing = 0;
 450
 451         flash_scale = f1_0;
 452
 453         //init_endlevel();
 454
 455         mine_destroyed=0;
 456
 457 }
 458
 459 extern flythrough_data fly_objects[];
 460
 461 extern object *slew_obj;
 462
 463 vms_angvec player_angles,player_dest_angles;
 464 vms_angvec camera_desired_angles,camera_cur_angles;
 465
 466 #define CHASE_TURN_RATE (0x4000/4)              //max turn per second
 467
 468 //returns bitmask of which angles are at dest. bits 0,1,2 = p,b,h
 469 int chase_angles(vms_angvec *cur_angles,vms_angvec *desired_angles)
 470 {
 471         vms_angvec delta_angs,alt_angles,alt_delta_angs;
 472         fix total_delta,alt_total_delta;
 473         fix frame_turn;
 474         int mask=0;
 475
 476         delta_angs.p = desired_angles->p - cur_angles->p;
 477         delta_angs.h = desired_angles->h - cur_angles->h;
 478         delta_angs.b = desired_angles->b - cur_angles->b;
 479 //delta_angs.b = 0;
 480
 481 //printf("chasing angles...desired = %x %x %x, cur = %x %x %x   ",desired_angles->p,desired_angles->b,desired_angles->h,cur_angles->p,cur_angles->b,cur_angles->h);
 482
 483         total_delta = abs(delta_angs.p) + abs(delta_angs.b) + abs(delta_angs.h);
 484
 485         alt_angles.p = f1_0/2 - cur_angles->p;
 486         alt_angles.b = cur_angles->b + f1_0/2;
 487         alt_angles.h = cur_angles->h + f1_0/2;
 488
 489         alt_delta_angs.p = desired_angles->p - alt_angles.p;
 490         alt_delta_angs.h = desired_angles->h - alt_angles.h;
 491         alt_delta_angs.b = desired_angles->b - alt_angles.b;
 492 //alt_delta_angs.b = 0;
 493
 494         alt_total_delta = abs(alt_delta_angs.p) + abs(alt_delta_angs.b) + abs(alt_delta_angs.h);
 495
 496 //printf("Total delta = %x, alt total_delta = %x\n",total_delta,alt_total_delta);
 497
 498         if (alt_total_delta < total_delta) {
 499                 //mprintf((0,"FLIPPING ANGLES!\n"));
 500                 //printf("FLIPPING ANGLES!\n");
 501                 *cur_angles = alt_angles;
 502                 delta_angs = alt_delta_angs;
 503         }
 504
 505         frame_turn = fixmul(FrameTime,CHASE_TURN_RATE);
 506
 507         if (abs(delta_angs.p) < frame_turn) {
 508                 cur_angles->p = desired_angles->p;
 509                 mask |= 1;
 510         }
 511         else
 512                 if (delta_angs.p > 0)
 513                         cur_angles->p += frame_turn;
 514                 else
 515                         cur_angles->p -= frame_turn;
 516
 517         if (abs(delta_angs.b) < frame_turn) {
 518                 cur_angles->b = desired_angles->b;
 519                 mask |= 2;
 520         }
 521         else
 522                 if (delta_angs.b > 0)
 523                         cur_angles->b += frame_turn;
 524                 else
 525                         cur_angles->b -= frame_turn;
 526 //cur_angles->b = 0;
 527
 528         if (abs(delta_angs.h) < frame_turn) {
 529                 cur_angles->h = desired_angles->h;
 530                 mask |= 4;
 531         }
 532         else
 533                 if (delta_angs.h > 0)
 534                         cur_angles->h += frame_turn;
 535                 else
 536                         cur_angles->h -= frame_turn;
 537
 538         return mask;
 539 }
 540
 541 void stop_endlevel_sequence()
 542 {
 543         Interpolation_method = 0;
 544
 545         gr_palette_fade_out(gr_palette, 32, 0);
 546
 547         select_cockpit(cockpit_mode_save);
 548
 549         Endlevel_sequence = EL_OFF;
 550
 551         PlayerFinishedLevel(0);
 552
 553 }
 554
 555 #define VCLIP_BIG_PLAYER_EXPLOSION      58
 556
 557 //--unused-- vms_vector upvec = {0,f1_0,0};
 558
 559 //find the angle between the player's heading & the station
 560 void get_angs_to_object(vms_angvec *av,vms_vector *targ_pos,vms_vector *cur_pos)
 561 {
 562         vms_vector tv;
 563
 564         vm_vec_sub(&tv,targ_pos,cur_pos);
 565
 566         vm_extract_angles_vector(av,&tv);
 567 }
 568
 569 void do_endlevel_frame()
 570 {
 571         static fix timer;
 572         static fix bank_rate;
 573         vms_vector save_last_pos;
 574         static fix explosion_wait1=0;
 575         static fix explosion_wait2=0;
 576         static fix ext_expl_halflife;
 577
 578         save_last_pos = ConsoleObject->last_pos;        //don't let move code change this
 579         object_move_all();
 580         ConsoleObject->last_pos = save_last_pos;
 581
 582         if (ext_expl_playing) {
 583
 584                 external_explosion.lifeleft -= FrameTime;
 585                 do_explosion_sequence(&external_explosion);
 586
 587                 if (external_explosion.lifeleft < ext_expl_halflife)
 588                         mine_destroyed = 1;
 589
 590                 if (external_explosion.flags & OF_SHOULD_BE_DEAD)
 591                         ext_expl_playing = 0;
 592         }
 593
 594         if (cur_fly_speed != desired_fly_speed) {
 595                 fix delta = desired_fly_speed - cur_fly_speed;
 596                 fix frame_accel = fixmul(FrameTime,FLY_ACCEL);
 597
 598                 if (abs(delta) < frame_accel)
 599                         cur_fly_speed = desired_fly_speed;
 600                 else
 601                         if (delta > 0)
 602                                 cur_fly_speed += frame_accel;
 603                         else
 604                                 cur_fly_speed -= frame_accel;
 605         }
 606
 607         //do big explosions
 608         if (!outside_mine) {
 609
 610                 if (Endlevel_sequence==EL_OUTSIDE) {
 611                         vms_vector tvec;
 612
 613                         vm_vec_sub(&tvec,&ConsoleObject->pos,&mine_side_exit_point);
 614
 615                         if (vm_vec_dot(&tvec,&mine_exit_orient.fvec) > 0) {
 616                                 object *tobj;
 617
 618                                 outside_mine = 1;
 619
 620                                 tobj = object_create_explosion(exit_segnum,&mine_side_exit_point,i2f(50),VCLIP_BIG_PLAYER_EXPLOSION);
 621
 622                                 if (tobj) {
 623                                         external_explosion = *tobj;
 624
 625                                         tobj->flags |= OF_SHOULD_BE_DEAD;
 626
 627                                         flash_scale = 0;        //kill lights in mine
 628
 629                                         ext_expl_halflife = tobj->lifeleft;
 630
 631                                         ext_expl_playing = 1;
 632                                 }
 633
 634                                 digi_link_sound_to_pos( SOUND_BIG_ENDLEVEL_EXPLOSION, exit_segnum, 0, &mine_side_exit_point, 0, i2f(3)/4 );
 635                         }
 636                 }
 637
 638                 //do explosions chasing player
 639                 if ((explosion_wait1-=FrameTime) < 0) {
 640                         vms_vector tpnt;
 641                         int segnum;
 642                         object *expl;
 643                         static int sound_count;
 644
 645                         vm_vec_scale_add(&tpnt,&ConsoleObject->pos,&ConsoleObject->orient.fvec,-ConsoleObject->size*5);
 646                         vm_vec_scale_add2(&tpnt,&ConsoleObject->orient.rvec,(d_rand()-RAND_MAX/2)*15);
 647                         vm_vec_scale_add2(&tpnt,&ConsoleObject->orient.uvec,(d_rand()-RAND_MAX/2)*15);
 648
 649                         segnum = find_point_seg(&tpnt,ConsoleObject->segnum);
 650
 651                         if (segnum != -1) {
 652                                 expl = object_create_explosion(segnum,&tpnt,i2f(20),VCLIP_BIG_PLAYER_EXPLOSION);
 653                                 if (d_rand()<10000 || ++sound_count==7) {               //pseudo-random
 654                                         digi_link_sound_to_pos( SOUND_TUNNEL_EXPLOSION, segnum, 0, &tpnt, 0, F1_0 );
 655                                         sound_count=0;
 656                                 }
 657                         }
 658
 659                         explosion_wait1 = 0x2000 + d_rand()/4;
 660
 661                 }
 662         }
 663
 664         //do little explosions on walls
 665         if (Endlevel_sequence >= EL_FLYTHROUGH && Endlevel_sequence < EL_OUTSIDE)
 666                 if ((explosion_wait2-=FrameTime) < 0) {
 667                         vms_vector tpnt;
 668                         fvi_query fq;
 669                         fvi_info hit_data;
 670
 671                         //create little explosion on wall
 672
 673                         vm_vec_copy_scale(&tpnt,&ConsoleObject->orient.rvec,(d_rand()-RAND_MAX/2)*100);
 674                         vm_vec_scale_add2(&tpnt,&ConsoleObject->orient.uvec,(d_rand()-RAND_MAX/2)*100);
 675                         vm_vec_add2(&tpnt,&ConsoleObject->pos);
 676
 677                         if (Endlevel_sequence == EL_FLYTHROUGH)
 678                                 vm_vec_scale_add2(&tpnt,&ConsoleObject->orient.fvec,d_rand()*200);
 679                         else
 680                                 vm_vec_scale_add2(&tpnt,&ConsoleObject->orient.fvec,d_rand()*60);
 681
 682                         //find hit point on wall
 683
 684                         fq.p0 = &ConsoleObject->pos;
 685                         fq.p1 = &tpnt;
 686                         fq.startseg = ConsoleObject->segnum;
 687                         fq.rad = 0;
 688                         fq.thisobjnum = 0;
 689                         fq.ignore_obj_list = NULL;
 690                         fq.flags = 0;
 691
 692                         find_vector_intersection(&fq,&hit_data);
 693
 694                         if (hit_data.hit_type==HIT_WALL && hit_data.hit_seg!=-1)
 695                                 object_create_explosion(hit_data.hit_seg,&hit_data.hit_pnt,i2f(3)+d_rand()*6,VCLIP_SMALL_EXPLOSION);
 696
 697                         explosion_wait2 = (0xa00 + d_rand()/8)/2;
 698                 }
 699
 700         switch (Endlevel_sequence) {
 701
 702                 case EL_OFF: return;
 703
 704                 case EL_FLYTHROUGH: {
 705
 706                         do_endlevel_flythrough(0);
 707
 708                         if (ConsoleObject->segnum == transition_segnum) {
 709
 710                                 if ((Current_mission_num == Builtin_mission_num) &&
 711                                         (start_endlevel_movie() != MOVIE_NOT_PLAYED))
 712                                         stop_endlevel_sequence();
 713                                 else {
 714                                         int objnum;
 715
 716                                         //songs_play_song( SONG_ENDLEVEL, 0 );
 717
 718                                         Endlevel_sequence = EL_LOOKBACK;
 719
 720                                         objnum = obj_create(OBJ_CAMERA, 0,
 721                                                             ConsoleObject->segnum,&ConsoleObject->pos,&ConsoleObject->orient,0,
 722                                                             CT_NONE,MT_NONE,RT_NONE);
 723
 724                                         if (objnum == -1) { //can't get object, so abort
 725                                                 mprintf((1, "Can't get object for endlevel sequence.  Aborting endlevel sequence.\n"));
 726                                                 stop_endlevel_sequence();
 727                                                 return;
 728                                         }
 729
 730                                         Viewer = endlevel_camera = &Objects[objnum];
 731
 732                                         select_cockpit(CM_LETTERBOX);
 733
 734                                         fly_objects[1] = fly_objects[0];
 735                                         fly_objects[1].obj = endlevel_camera;
 736                                         fly_objects[1].speed = (5*cur_fly_speed)/4;
 737                                         fly_objects[1].offset_frac = 0x4000;
 738
 739                                         vm_vec_scale_add2(&endlevel_camera->pos,&endlevel_camera->orient.fvec,i2f(7));
 740
 741                                         timer=0x20000;
 742
 743                                 }
 744                         }
 745
 746                         break;
 747                 }
 748
 749
 750                 case EL_LOOKBACK: {
 751
 752                         do_endlevel_flythrough(0);
 753                         do_endlevel_flythrough(1);
 754
 755                         if (timer>0) {
 756
 757                                 timer -= FrameTime;
 758
 759                                 if (timer < 0)          //reduce speed
 760                                         fly_objects[1].speed = fly_objects[0].speed;
 761                         }
 762
 763                         if (endlevel_camera->segnum == exit_segnum) {
 764                                 vms_angvec cam_angles,exit_seg_angles;
 765
 766                                 Endlevel_sequence = EL_OUTSIDE;
 767
 768                                 timer = i2f(2);
 769
 770                                 vm_vec_negate(&endlevel_camera->orient.fvec);
 771                                 vm_vec_negate(&endlevel_camera->orient.rvec);
 772
 773                                 vm_extract_angles_matrix(&cam_angles,&endlevel_camera->orient);
 774                                 vm_extract_angles_matrix(&exit_seg_angles,&mine_exit_orient);
 775                                 bank_rate = (-exit_seg_angles.b - cam_angles.b)/2;
 776
 777                                 ConsoleObject->control_type = endlevel_camera->control_type = CT_NONE;
 778
 779 #ifdef SLEW_ON
 780  slew_obj = endlevel_camera;
 781 #endif
 782                         }
 783
 784                         break;
 785                 }
 786
 787                 case EL_OUTSIDE: {
 788                         #ifndef SLEW_ON
 789                         vms_angvec cam_angles;
 790                         #endif
 791
 792                         vm_vec_scale_add2(&ConsoleObject->pos,&ConsoleObject->orient.fvec,fixmul(FrameTime,cur_fly_speed));
 793 #ifndef SLEW_ON
 794                         vm_vec_scale_add2(&endlevel_camera->pos,&endlevel_camera->orient.fvec,fixmul(FrameTime,-2*cur_fly_speed));
 795                         vm_vec_scale_add2(&endlevel_camera->pos,&endlevel_camera->orient.uvec,fixmul(FrameTime,-cur_fly_speed/10));
 796
 797                         vm_extract_angles_matrix(&cam_angles,&endlevel_camera->orient);
 798                         cam_angles.b += fixmul(bank_rate,FrameTime);
 799                         vm_angles_2_matrix(&endlevel_camera->orient,&cam_angles);
 800 #endif
 801
 802                         timer -= FrameTime;
 803
 804                         if (timer < 0) {
 805
 806                                 Endlevel_sequence = EL_STOPPED;
 807
 808                                 vm_extract_angles_matrix(&player_angles,&ConsoleObject->orient);
 809
 810                                 timer = i2f(3);
 811
 812                         }
 813
 814                         break;
 815                 }
 816
 817                 case EL_STOPPED: {
 818
 819                         get_angs_to_object(&player_dest_angles,&station_pos,&ConsoleObject->pos);
 820                         chase_angles(&player_angles,&player_dest_angles);
 821                         vm_angles_2_matrix(&ConsoleObject->orient,&player_angles);
 822
 823                         vm_vec_scale_add2(&ConsoleObject->pos,&ConsoleObject->orient.fvec,fixmul(FrameTime,cur_fly_speed));
 824
 825                         timer -= FrameTime;
 826
 827                         if (timer < 0) {
 828
 829                                 #ifdef SLEW_ON
 830                                 slew_obj = endlevel_camera;
 831                                 _do_slew_movement(endlevel_camera,1,1);
 832                                 timer += FrameTime;             //make time stop
 833                                 break;
 834                                 #else
 835
 836                                 #ifdef SHORT_SEQUENCE
 837
 838                                 stop_endlevel_sequence();
 839
 840                                 #else
 841                                 Endlevel_sequence = EL_PANNING;
 842
 843                                 vm_extract_angles_matrix(&camera_cur_angles,&endlevel_camera->orient);
 844
 845
 846                                 timer = i2f(3);
 847
 848                                 if (Game_mode & GM_MULTI) { // try to skip part of the seq if multiplayer
 849                                         stop_endlevel_sequence();
 850                                         return;
 851                                 }
 852
 853                                 //mprintf((0,"Switching to pan...\n"));
 854                                 #endif          //SHORT_SEQUENCE
 855                                 #endif          //SLEW_ON
 856
 857                         }
 858                         break;
 859                 }
 860
 861                 #ifndef SHORT_SEQUENCE
 862                 case EL_PANNING: {
 863                         #ifndef SLEW_ON
 864                         int mask;
 865                         #endif
 866
 867                         get_angs_to_object(&player_dest_angles,&station_pos,&ConsoleObject->pos);
 868                         chase_angles(&player_angles,&player_dest_angles);
 869                         vm_angles_2_matrix(&ConsoleObject->orient,&player_angles);
 870                         vm_vec_scale_add2(&ConsoleObject->pos,&ConsoleObject->orient.fvec,fixmul(FrameTime,cur_fly_speed));
 871
 872                         #ifdef SLEW_ON
 873                         _do_slew_movement(endlevel_camera,1,1);
 874                         #else
 875
 876                         get_angs_to_object(&camera_desired_angles,&ConsoleObject->pos,&endlevel_camera->pos);
 877                         mask = chase_angles(&camera_cur_angles,&camera_desired_angles);
 878                         vm_angles_2_matrix(&endlevel_camera->orient,&camera_cur_angles);
 879
 880                         if ((mask&5) == 5) {
 881
 882                                 vms_vector tvec;
 883
 884                                 Endlevel_sequence = EL_CHASING;
 885
 886                                 vm_vec_normalized_dir_quick(&tvec,&station_pos,&ConsoleObject->pos);
 887                                 vm_vector_2_matrix(&ConsoleObject->orient,&tvec,&surface_orient.uvec,NULL);
 888
 889                                 desired_fly_speed *= 2;
 890
 891                                 //mprintf((0,"Switching to chase...\n"));
 892
 893                         }
 894                         #endif
 895
 896                         break;
 897                 }
 898
 899                 case EL_CHASING: {
 900                         fix d,speed_scale;
 901
 902                         #ifdef SLEW_ON
 903                         _do_slew_movement(endlevel_camera,1,1);
 904                         #endif
 905
 906                         get_angs_to_object(&camera_desired_angles,&ConsoleObject->pos,&endlevel_camera->pos);
 907                         chase_angles(&camera_cur_angles,&camera_desired_angles);
 908
 909                         #ifndef SLEW_ON
 910                         vm_angles_2_matrix(&endlevel_camera->orient,&camera_cur_angles);
 911                         #endif
 912
 913                         d = vm_vec_dist_quick(&ConsoleObject->pos,&endlevel_camera->pos);
 914
 915                         speed_scale = fixdiv(d,i2f(0x20));
 916                         if (d<f1_0) d=f1_0;
 917
 918                         get_angs_to_object(&player_dest_angles,&station_pos,&ConsoleObject->pos);
 919                         chase_angles(&player_angles,&player_dest_angles);
 920                         vm_angles_2_matrix(&ConsoleObject->orient,&player_angles);
 921
 922                         vm_vec_scale_add2(&ConsoleObject->pos,&ConsoleObject->orient.fvec,fixmul(FrameTime,cur_fly_speed));
 923                         #ifndef SLEW_ON
 924                         vm_vec_scale_add2(&endlevel_camera->pos,&endlevel_camera->orient.fvec,fixmul(FrameTime,fixmul(speed_scale,cur_fly_speed)));
 925
 926                         if (vm_vec_dist(&ConsoleObject->pos,&station_pos) < i2f(10))
 927                                 stop_endlevel_sequence();
 928                         #endif
 929
 930                         break;
 931
 932                 }
 933                 #endif          //ifdef SHORT_SEQUENCE
 934
 935         }
 936 }
 937
 938
 939 #define MIN_D 0x100
 940
 941 //find which side to fly out of
 942 int find_exit_side(object *obj)
 943 {
 944         int i;
 945         vms_vector prefvec,segcenter,sidevec;
 946         fix best_val=-f2_0;
 947         int best_side;
 948         segment *pseg = &Segments[obj->segnum];
 949
 950         //find exit side
 951
 952         vm_vec_normalized_dir_quick(&prefvec,&obj->pos,&obj->last_pos);
 953
 954         compute_segment_center(&segcenter,pseg);
 955
 956         best_side=-1;
 957         for (i=MAX_SIDES_PER_SEGMENT;--i >= 0;) {
 958                 fix d;
 959
 960                 if (pseg->children[i]!=-1) {
 961
 962                         compute_center_point_on_side(&sidevec,pseg,i);
 963                         vm_vec_normalized_dir_quick(&sidevec,&sidevec,&segcenter);
 964                         d = vm_vec_dotprod(&sidevec,&prefvec);
 965
 966                         if (labs(d) < MIN_D) d=0;
 967
 968                         if (d > best_val) {best_val=d; best_side=i;}
 969
 970                 }
 971         }
 972
 973         Assert(best_side!=-1);
 974
 975         return best_side;
 976 }
 977
 978 extern fix Render_zoom;                                                 //the player's zoom factor
 979
 980 extern vms_vector Viewer_eye;   //valid during render
 981
 982 void draw_exit_model()
 983 {
 984         vms_vector model_pos;
 985         int f=15,u=0;   //21;
 986
 987         vm_vec_scale_add(&model_pos,&mine_exit_point,&mine_exit_orient.fvec,i2f(f));
 988         vm_vec_scale_add2(&model_pos,&mine_exit_orient.uvec,i2f(u));
 989
 990         draw_polygon_model(&model_pos,&mine_exit_orient,NULL,(mine_destroyed)?destroyed_exit_modelnum:exit_modelnum,0,f1_0,NULL,NULL);
 991
 992 }
 993
 994 int exit_point_bmx,exit_point_bmy;
 995
 996 fix satellite_size = i2f(400);
 997
 998 #define SATELLITE_DIST          i2f(1024)
 999 #define SATELLITE_WIDTH         satellite_size
1000 #define SATELLITE_HEIGHT        ((satellite_size*9)/4)          //((satellite_size*5)/2)
1001
1002 void render_external_scene(fix eye_offset)
1003 {
1004
1005         Viewer_eye = Viewer->pos;
1006
1007         if (eye_offset)
1008                 vm_vec_scale_add2(&Viewer_eye,&Viewer->orient.rvec,eye_offset);
1009
1010         g3_set_view_matrix(&Viewer->pos,&Viewer->orient,Render_zoom);
1011
1012         //g3_draw_horizon(BM_XRGB(0,0,0),BM_XRGB(16,16,16));            //,-1);
1013         gr_clear_canvas(BM_XRGB(0,0,0));
1014
1015         g3_start_instance_matrix(&vmd_zero_vector,&surface_orient);
1016         draw_stars();
1017         g3_done_instance();
1018
1019         {       //draw satellite
1020
1021                 vms_vector delta;
1022                 g3s_point p,top_pnt;
1023
1024                 g3_rotate_point(&p,&satellite_pos);
1025                 g3_rotate_delta_vec(&delta,&satellite_upvec);
1026
1027                 g3_add_delta_vec(&top_pnt,&p,&delta);
1028
1029                 if (! (p.p3_codes & CC_BEHIND)) {
1030                         int save_im = Interpolation_method;
1031                         //p.p3_flags &= ~PF_PROJECTED;
1032                         //g3_project_point(&p);
1033                         if (! (p.p3_flags & PF_OVERFLOW)) {
1034                                 Interpolation_method = 0;
1035                                 //gr_bitmapm(f2i(p.p3_sx)-32,f2i(p.p3_sy)-32,satellite_bitmap);
1036                                 g3_draw_rod_tmap(satellite_bitmap,&p,SATELLITE_WIDTH,&top_pnt,SATELLITE_WIDTH,f1_0);
1037                                 Interpolation_method = save_im;
1038                         }
1039                 }
1040         }
1041
1042         #ifdef STATION_ENABLED
1043         draw_polygon_model(&station_pos,&vmd_identity_matrix,NULL,station_modelnum,0,f1_0,NULL,NULL);
1044         #endif
1045
1046         render_terrain(&mine_ground_exit_point,exit_point_bmx,exit_point_bmy);
1047
1048         draw_exit_model();
1049         if (ext_expl_playing)
1050                 draw_fireball(&external_explosion);
1051
1052         Lighting_on=0;
1053         render_object(ConsoleObject);
1054         Lighting_on=1;
1055 }
1056
1057 #define MAX_STARS 500
1058
1059 vms_vector stars[MAX_STARS];
1060
1061 void generate_starfield()
1062 {
1063         int i;
1064
1065         for (i=0;i<MAX_STARS;i++) {
1066
1067                 stars[i].x = (d_rand() - RAND_MAX/2) << 14;
1068                 stars[i].z = (d_rand() - RAND_MAX/2) << 14;
1069                 stars[i].y = (d_rand()/2) << 14;
1070
1071         }
1072 }
1073
1074 void draw_stars()
1075 {
1076         int i;
1077         int intensity=31;
1078         g3s_point p;
1079
1080         for (i=0;i<MAX_STARS;i++) {
1081
1082                 if ((i&63) == 0) {
1083                         gr_setcolor(BM_XRGB(intensity,intensity,intensity));
1084                         intensity-=3;
1085                 }
1086
1087                 //g3_rotate_point(&p,&stars[i]);
1088                 g3_rotate_delta_vec(&p.p3_vec,&stars[i]);
1089                 g3_code_point(&p);
1090
1091                 if (p.p3_codes == 0) {
1092
1093                         p.p3_flags &= ~PF_PROJECTED;
1094
1095                         g3_project_point(&p);
1096
1097                         gr_pixel(f2i(p.p3_sx),f2i(p.p3_sy));
1098                 }
1099         }
1100
1101 //@@    {
1102 //@@            vms_vector delta;
1103 //@@            g3s_point top_pnt;
1104 //@@
1105 //@@            g3_rotate_point(&p,&satellite_pos);
1106 //@@            g3_rotate_delta_vec(&delta,&satellite_upvec);
1107 //@@
1108 //@@            g3_add_delta_vec(&top_pnt,&p,&delta);
1109 //@@
1110 //@@            if (! (p.p3_codes & CC_BEHIND)) {
1111 //@@                    int save_im = Interpolation_method;
1112 //@@                    Interpolation_method = 0;
1113 //@@                    //p.p3_flags &= ~PF_PROJECTED;
1114 //@@                    g3_project_point(&p);
1115 //@@                    if (! (p.p3_flags & PF_OVERFLOW))
1116 //@@                            //gr_bitmapm(f2i(p.p3_sx)-32,f2i(p.p3_sy)-32,satellite_bitmap);
1117 //@@                            g3_draw_rod_tmap(satellite_bitmap,&p,SATELLITE_WIDTH,&top_pnt,SATELLITE_WIDTH,f1_0);
1118 //@@                    Interpolation_method = save_im;
1119 //@@            }
1120 //@@    }
1121
1122 }
1123
1124 void endlevel_render_mine(fix eye_offset)
1125 {
1126         int start_seg_num;
1127
1128         Viewer_eye = Viewer->pos;
1129
1130         if (Viewer->type == OBJ_PLAYER )
1131                 vm_vec_scale_add2(&Viewer_eye,&Viewer->orient.fvec,(Viewer->size*3)/4);
1132
1133         if (eye_offset)
1134                 vm_vec_scale_add2(&Viewer_eye,&Viewer->orient.rvec,eye_offset);
1135
1136         #ifdef EDITOR
1137         if (Function_mode==FMODE_EDITOR)
1138                 Viewer_eye = Viewer->pos;
1139         #endif
1140
1141         if (Endlevel_sequence >= EL_OUTSIDE) {
1142
1143                 start_seg_num = exit_segnum;
1144         }
1145         else {
1146                 start_seg_num = find_point_seg(&Viewer_eye,Viewer->segnum);
1147
1148                 if (start_seg_num==-1)
1149                         start_seg_num = Viewer->segnum;
1150         }
1151
1152         if (Endlevel_sequence == EL_LOOKBACK) {
1153                 vms_matrix headm,viewm;
1154                 vms_angvec angles = {0,0,0x7fff};
1155
1156                 vm_angles_2_matrix(&headm,&angles);
1157                 vm_matrix_x_matrix(&viewm,&Viewer->orient,&headm);
1158                 g3_set_view_matrix(&Viewer_eye,&viewm,Render_zoom);
1159         }
1160         else
1161                 g3_set_view_matrix(&Viewer_eye,&Viewer->orient,Render_zoom);
1162
1163         render_mine(start_seg_num,eye_offset, 0);
1164 }
1165
1166 void render_endlevel_frame(fix eye_offset)
1167 {
1168
1169         g3_start_frame();
1170
1171         if (Endlevel_sequence < EL_OUTSIDE)
1172                 endlevel_render_mine(eye_offset);
1173         else
1174                 render_external_scene(eye_offset);
1175
1176         g3_end_frame();
1177
1178 }
1179
1180
1181 ///////////////////////// copy of flythrough code for endlevel
1182
1183
1184 #define MAX_FLY_OBJECTS 2
1185
1186 flythrough_data fly_objects[MAX_FLY_OBJECTS];
1187
1188 flythrough_data *flydata;
1189
1190 int matt_find_connect_side(int seg0,int seg1);
1191
1192 void compute_segment_center(vms_vector *vp,segment *sp);
1193
1194 fixang delta_ang(fixang a,fixang b);
1195 fixang interp_angle(fixang dest,fixang src,fixang step);
1196
1197 #define DEFAULT_SPEED i2f(16)
1198
1199 #define MIN_D 0x100
1200
1201 //if speed is zero, use default speed
1202 void start_endlevel_flythrough(int n,object *obj,fix speed)
1203 {
1204         flydata = &fly_objects[n];
1205
1206         flydata->obj = obj;
1207
1208         flydata->first_time = 1;
1209
1210         flydata->speed = speed?speed:DEFAULT_SPEED;
1211
1212         flydata->offset_frac = 0;
1213 }
1214
1215 static vms_angvec *angvec_add2_scale(vms_angvec *dest,vms_vector *src,fix s)
1216 {
1217         dest->p += fixmul(src->x,s);
1218         dest->b  += fixmul(src->z,s);
1219         dest->h  += fixmul(src->y,s);
1220
1221         return dest;
1222 }
1223
1224 #define MAX_ANGSTEP     0x4000          //max turn per second
1225
1226 #define MAX_SLIDE_PER_SEGMENT 0x10000
1227
1228 void do_endlevel_flythrough(int n)
1229 {
1230         object *obj;
1231         segment *pseg;
1232         int old_player_seg;
1233
1234         flydata = &fly_objects[n];
1235         obj = flydata->obj;
1236
1237         old_player_seg = obj->segnum;
1238
1239         //move the player for this frame
1240
1241         if (!flydata->first_time) {
1242
1243                 vm_vec_scale_add2(&obj->pos,&flydata->step,FrameTime);
1244                 angvec_add2_scale(&flydata->angles,&flydata->angstep,FrameTime);
1245
1246                 vm_angles_2_matrix(&obj->orient,&flydata->angles);
1247         }
1248
1249         //check new player seg
1250
1251         update_object_seg(obj);
1252         pseg = &Segments[obj->segnum];
1253
1254         if (flydata->first_time || obj->segnum != old_player_seg) {             //moved into new seg
1255                 vms_vector curcenter,nextcenter;
1256                 fix step_size,seg_time;
1257                 short entry_side,exit_side = -1;//what sides we entry and leave through
1258                 vms_vector dest_point;          //where we are heading (center of exit_side)
1259                 vms_angvec dest_angles;         //where we want to be pointing
1260                 vms_matrix dest_orient;
1261                 int up_side=0;
1262
1263                 entry_side=0;
1264
1265                 //find new exit side
1266
1267                 if (!flydata->first_time) {
1268
1269                         entry_side = matt_find_connect_side(obj->segnum,old_player_seg);
1270                         exit_side = Side_opposite[entry_side];
1271                 }
1272
1273                 if (flydata->first_time || entry_side==-1 || pseg->children[exit_side]==-1)
1274                         exit_side = find_exit_side(obj);
1275
1276                 {                                                                               //find closest side to align to
1277                         fix d,largest_d=-f1_0;
1278                         int i;
1279
1280                         for (i=0;i<6;i++) {
1281                                 #ifdef COMPACT_SEGS
1282                                 vms_vector v1;
1283                                 get_side_normal(pseg, i, 0, &v1 );
1284                                 d = vm_vec_dot(&v1,&flydata->obj->orient.uvec);
1285                                 #else
1286                                 d = vm_vec_dot(&pseg->sides[i].normals[0],&flydata->obj->orient.uvec);
1287                                 #endif
1288                                 if (d > largest_d) {largest_d = d; up_side=i;}
1289                         }
1290
1291                 }
1292
1293                 //update target point & angles
1294
1295                 compute_center_point_on_side(&dest_point,pseg,exit_side);
1296
1297                 //update target point and movement points
1298
1299                 //offset object sideways
1300                 if (flydata->offset_frac) {
1301                         int s0=-1,s1=0,i;
1302                         vms_vector s0p,s1p;
1303                         fix dist;
1304
1305                         for (i=0;i<6;i++)
1306                                 if (i!=entry_side && i!=exit_side && i!=up_side && i!=Side_opposite[up_side])
1307                                  {
1308                                         if (s0==-1)
1309                                                 s0 = i;
1310                                         else
1311                                                 s1 = i;
1312                                  }
1313
1314                         compute_center_point_on_side(&s0p,pseg,s0);
1315                         compute_center_point_on_side(&s1p,pseg,s1);
1316                         dist = fixmul(vm_vec_dist(&s0p,&s1p),flydata->offset_frac);
1317
1318                         if (dist-flydata->offset_dist > MAX_SLIDE_PER_SEGMENT)
1319                                 dist = flydata->offset_dist + MAX_SLIDE_PER_SEGMENT;
1320
1321                         flydata->offset_dist = dist;
1322
1323                         vm_vec_scale_add2(&dest_point,&obj->orient.rvec,dist);
1324
1325                 }
1326
1327                 vm_vec_sub(&flydata->step,&dest_point,&obj->pos);
1328                 step_size = vm_vec_normalize_quick(&flydata->step);
1329                 vm_vec_scale(&flydata->step,flydata->speed);
1330
1331                 compute_segment_center(&curcenter,pseg);
1332                 compute_segment_center(&nextcenter,&Segments[pseg->children[exit_side]]);
1333                 vm_vec_sub(&flydata->headvec,&nextcenter,&curcenter);
1334
1335                 #ifdef COMPACT_SEGS
1336                 {
1337                         vms_vector _v1;
1338                         get_side_normal(pseg, up_side, 0, &_v1 );
1339                         vm_vector_2_matrix(&dest_orient,&flydata->headvec,&_v1,NULL);
1340                 }
1341                 #else
1342                 vm_vector_2_matrix(&dest_orient,&flydata->headvec,&pseg->sides[up_side].normals[0],NULL);
1343                 #endif
1344                 vm_extract_angles_matrix(&dest_angles,&dest_orient);
1345
1346                 if (flydata->first_time)
1347                         vm_extract_angles_matrix(&flydata->angles,&obj->orient);
1348
1349                 seg_time = fixdiv(step_size,flydata->speed);    //how long through seg
1350
1351                 if (seg_time) {
1352                         flydata->angstep.x = max(-MAX_ANGSTEP,min(MAX_ANGSTEP,fixdiv(delta_ang(flydata->angles.p,dest_angles.p),seg_time)));
1353                         flydata->angstep.z = max(-MAX_ANGSTEP,min(MAX_ANGSTEP,fixdiv(delta_ang(flydata->angles.b,dest_angles.b),seg_time)));
1354                         flydata->angstep.y = max(-MAX_ANGSTEP,min(MAX_ANGSTEP,fixdiv(delta_ang(flydata->angles.h,dest_angles.h),seg_time)));
1355
1356                 }
1357                 else {
1358                         flydata->angles = dest_angles;
1359                         flydata->angstep.x = flydata->angstep.y = flydata->angstep.z = 0;
1360                 }
1361         }
1362
1363         flydata->first_time=0;
1364 }
1365
1366 #define JOY_NULL 15
1367 #define ROT_SPEED 8             //rate of rotation while key held down
1368 #define VEL_SPEED (15)  //rate of acceleration while key held down
1369
1370 extern short old_joy_x,old_joy_y;       //position last time around
1371
1372 #include "key.h"
1373 #include "joy.h"
1374
1375 #ifdef SLEW_ON          //this is a special routine for slewing around external scene
1376 int _do_slew_movement(object *obj, int check_keys, int check_joy )
1377 {
1378         int moved = 0;
1379         vms_vector svel, movement;                              //scaled velocity (per this frame)
1380         vms_matrix rotmat,new_pm;
1381         int joy_x,joy_y,btns;
1382         int joyx_moved,joyy_moved;
1383         vms_angvec rotang;
1384
1385         if (keyd_pressed[KEY_PAD5])
1386                 vm_vec_zero(&obj->phys_info.velocity);
1387
1388         if (check_keys) {
1389                 obj->phys_info.velocity.x += VEL_SPEED * (key_down_time(KEY_PAD9) - key_down_time(KEY_PAD7));
1390                 obj->phys_info.velocity.y += VEL_SPEED * (key_down_time(KEY_PADMINUS) - key_down_time(KEY_PADPLUS));
1391                 obj->phys_info.velocity.z += VEL_SPEED * (key_down_time(KEY_PAD8) - key_down_time(KEY_PAD2));
1392
1393                 rotang.pitch =  (key_down_time(KEY_LBRACKET) - key_down_time(KEY_RBRACKET))/ROT_SPEED;
1394                 rotang.bank  = (key_down_time(KEY_PAD1) - key_down_time(KEY_PAD3))/ROT_SPEED;
1395                 rotang.head  = (key_down_time(KEY_PAD6) - key_down_time(KEY_PAD4))/ROT_SPEED;
1396         }
1397         else
1398                 rotang.pitch = rotang.bank  = rotang.head  = 0;
1399
1400         //check for joystick movement
1401
1402         if (check_joy && joy_present)   {
1403                 joy_get_pos(&joy_x,&joy_y);
1404                 btns=joy_get_btns();
1405
1406                 joyx_moved = (abs(joy_x - old_joy_x)>JOY_NULL);
1407                 joyy_moved = (abs(joy_y - old_joy_y)>JOY_NULL);
1408
1409                 if (abs(joy_x) < JOY_NULL) joy_x = 0;
1410                 if (abs(joy_y) < JOY_NULL) joy_y = 0;
1411
1412                 if (btns)
1413                         if (!rotang.pitch) rotang.pitch = fixmul(-joy_y * 512,FrameTime); else;
1414                 else
1415                         if (joyy_moved) obj->phys_info.velocity.z = -joy_y * 8192;
1416
1417                 if (!rotang.head) rotang.head = fixmul(joy_x * 512,FrameTime);
1418
1419                 if (joyx_moved) old_joy_x = joy_x;
1420                 if (joyy_moved) old_joy_y = joy_y;
1421         }
1422
1423         moved = rotang.pitch | rotang.bank | rotang.head;
1424
1425         vm_angles_2_matrix(&rotmat,&rotang);
1426         vm_matrix_x_matrix(&new_pm,&obj->orient,&rotmat);
1427         obj->orient = new_pm;
1428         vm_transpose_matrix(&new_pm);           //make those columns rows
1429
1430         moved |= obj->phys_info.velocity.x | obj->phys_info.velocity.y | obj->phys_info.velocity.z;
1431
1432         svel = obj->phys_info.velocity;
1433         vm_vec_scale(&svel,FrameTime);          //movement in this frame
1434         vm_vec_rotate(&movement,&svel,&new_pm);
1435
1436         vm_vec_add2(&obj->pos,&movement);
1437
1438         moved |= (movement.x || movement.y || movement.z);
1439
1440         return moved;
1441 }
1442 #endif
1443
1444 #define LINE_LEN        80
1445 #define NUM_VARS        8
1446
1447 #define STATION_DIST    i2f(1024)
1448
1449 int convert_ext( char *dest, char *ext )
1450 {
1451         char *t;
1452
1453         t = strchr(dest,'.');
1454
1455         if (t && (t-dest <= 8)) {
1456                 t[1] = ext[0];
1457                 t[2] = ext[1];
1458                 t[3] = ext[2];
1459                 return 1;
1460         }
1461         else
1462                 return 0;
1463 }
1464
1465 //called for each level to load & setup the exit sequence
1466 void load_endlevel_data(int level_num)
1467 {
1468         char filename[13];
1469         char line[LINE_LEN],*p;
1470         CFILE *ifile;
1471         int var,segnum,sidenum;
1472         int exit_side=0, i;
1473         int have_binary = 0;
1474
1475         endlevel_data_loaded = 0;               //not loaded yet
1476
1477 try_again:
1478         ;
1479
1480         if (level_num<0)                //secret level
1481                 strcpy(filename,Secret_level_names[-level_num-1]);
1482         else                                    //normal level
1483                 strcpy(filename,Level_names[level_num-1]);
1484
1485         if (!convert_ext(filename,"END"))
1486                 Error("Error converting filename <%s> for endlevel data\n",filename);
1487
1488         ifile = cfopen(filename,"rb");
1489
1490         if (!ifile) {
1491
1492                 convert_ext(filename,"txb");
1493
1494                 ifile = cfopen(filename,"rb");
1495
1496                 if (!ifile) {
1497                         if (level_num==1) {
1498                                 con_printf(CON_DEBUG, "Cannot load file text of binary version of <%s>\n",filename);
1499                                 endlevel_data_loaded = 0; // won't be able to play endlevel sequence
1500                                 return;
1501                         }
1502                         else {
1503                                 level_num = 1;
1504                                 goto try_again;
1505                         }
1506                 }
1507
1508                 have_binary = 1;
1509         }
1510
1511         //ok...this parser is pretty simple.  It ignores comments, but
1512         //everything else must be in the right place
1513
1514         var = 0;
1515
1516         while (cfgets(line,LINE_LEN,ifile)) {
1517
1518                 if (have_binary) {
1519                         for (i = 0; i < strlen(line); i++) {
1520                                 encode_rotate_left(&(line[i]));
1521                                 line[i] = line[i] ^ BITMAP_TBL_XOR;
1522                                 encode_rotate_left(&(line[i]));
1523                         }
1524                         p = line;
1525                 }
1526
1527                 if ((p=strchr(line,';'))!=NULL)
1528                         *p = 0;         //cut off comment
1529
1530                 for (p=line+strlen(line);p>line && isspace(*p);*p--=0);
1531                 for (p=line;isspace(*p);p++);
1532
1533                 if (!*p)                //empty line
1534                         continue;
1535
1536                 switch (var) {
1537
1538                         case 0: {                                               //ground terrain
1539                                 int iff_error;
1540                                 ubyte pal[768];
1541
1542                                 if (terrain_bm_instance.bm_data)
1543                                         d_free(terrain_bm_instance.bm_data);
1544
1545                                 Assert(terrain_bm_instance.bm_data == NULL);
1546
1547                                 iff_error = iff_read_bitmap(p,&terrain_bm_instance,BM_LINEAR,pal);
1548                                 if (iff_error != IFF_NO_ERROR) {
1549                                         Warning("Can't load exit terrain from file %s: IFF error: %s",
1550                                                 p, iff_errormsg(iff_error));
1551                                         endlevel_data_loaded = 0; // won't be able to play endlevel sequence
1552                                         return;
1553                                 }
1554
1555                                 terrain_bitmap = &terrain_bm_instance;
1556
1557                                 gr_remap_bitmap_good( terrain_bitmap, pal, iff_transparent_color, -1);
1558
1559                                 break;
1560                         }
1561
1562                         case 1:                                                 //height map
1563
1564                                 load_terrain(p);
1565                                 break;
1566
1567
1568                         case 2:
1569
1570                                 sscanf(p,"%d,%d",&exit_point_bmx,&exit_point_bmy);
1571                                 break;
1572
1573                         case 3:                                                 //exit heading
1574
1575                                 exit_angles.h = i2f(atoi(p))/360;
1576                                 break;
1577
1578                         case 4: {                                               //planet bitmap
1579                                 int iff_error;
1580                                 ubyte pal[768];
1581
1582                                 if (satellite_bm_instance.bm_data)
1583                                         d_free(satellite_bm_instance.bm_data);
1584
1585                                 iff_error = iff_read_bitmap(p,&satellite_bm_instance,BM_LINEAR,pal);
1586                                 if (iff_error != IFF_NO_ERROR) {
1587                                         Warning("Can't load exit satellite from file %s: IFF error: %s",
1588                                                 p, iff_errormsg(iff_error));
1589                                         endlevel_data_loaded = 0; // won't be able to play endlevel sequence
1590                                         return;
1591                                 }
1592
1593                                 satellite_bitmap = &satellite_bm_instance;
1594                                 gr_remap_bitmap_good( satellite_bitmap, pal, iff_transparent_color, -1);
1595
1596                                 break;
1597                         }
1598
1599                         case 5:                                                 //earth pos
1600                         case 7: {                                               //station pos
1601                                 vms_matrix tm;
1602                                 vms_angvec ta;
1603                                 int pitch,head;
1604
1605                                 sscanf(p,"%d,%d",&head,&pitch);
1606
1607                                 ta.h = i2f(head)/360;
1608                                 ta.p = -i2f(pitch)/360;
1609                                 ta.b = 0;
1610
1611                                 vm_angles_2_matrix(&tm,&ta);
1612
1613                                 if (var==5)
1614                                         satellite_pos = tm.fvec;
1615                                         //vm_vec_copy_scale(&satellite_pos,&tm.fvec,SATELLITE_DIST);
1616                                 else
1617                                         station_pos = tm.fvec;
1618
1619                                 break;
1620                         }
1621
1622                         case 6:                                         //planet size
1623                                 satellite_size = i2f(atoi(p));
1624                                 break;
1625                 }
1626
1627                 var++;
1628
1629         }
1630
1631         Assert(var == NUM_VARS);
1632
1633
1634         // OK, now the data is loaded.  Initialize everything
1635
1636         //find the exit sequence by searching all segments for a side with
1637         //children == -2
1638
1639         for (segnum=0,exit_segnum=-1;exit_segnum==-1 && segnum<=Highest_segment_index;segnum++)
1640                 for (sidenum=0;sidenum<6;sidenum++)
1641                         if (Segments[segnum].children[sidenum] == -2) {
1642                                 exit_segnum = segnum;
1643                                 exit_side = sidenum;
1644                                 break;
1645                         }
1646
1647         Assert(exit_segnum!=-1);
1648
1649         compute_segment_center(&mine_exit_point,&Segments[exit_segnum]);
1650         extract_orient_from_segment(&mine_exit_orient,&Segments[exit_segnum]);
1651         compute_center_point_on_side(&mine_side_exit_point,&Segments[exit_segnum],exit_side);
1652
1653         vm_vec_scale_add(&mine_ground_exit_point,&mine_exit_point,&mine_exit_orient.uvec,-i2f(20));
1654
1655         //compute orientation of surface
1656         {
1657                 vms_vector tv;
1658                 vms_matrix exit_orient,tm;
1659
1660                 vm_angles_2_matrix(&exit_orient,&exit_angles);
1661                 vm_transpose_matrix(&exit_orient);
1662                 vm_matrix_x_matrix(&surface_orient,&mine_exit_orient,&exit_orient);
1663
1664                 vm_copy_transpose_matrix(&tm,&surface_orient);
1665                 vm_vec_rotate(&tv,&station_pos,&tm);
1666                 vm_vec_scale_add(&station_pos,&mine_exit_point,&tv,STATION_DIST);
1667
1668                 vm_vec_rotate(&tv,&satellite_pos,&tm);
1669                 vm_vec_scale_add(&satellite_pos,&mine_exit_point,&tv,SATELLITE_DIST);
1670
1671                 vm_vector_2_matrix(&tm,&tv,&surface_orient.uvec,NULL);
1672                 vm_vec_copy_scale(&satellite_upvec,&tm.uvec,SATELLITE_HEIGHT);
1673
1674
1675         }
1676
1677         cfclose(ifile);
1678
1679         endlevel_data_loaded = 1;
1680
1681 }