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