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 #ifdef HAVE_CONFIG_H
  15 #include <conf.h>
  16 #endif
  17
  18 #ifdef RCS
  19 static char rcsid[] = "$Id: endlevel.c,v 1.5 2001-11-09 06:54:23 bradleyb Exp $";
  20 #endif
  21
  22 //#define SLEW_ON 1
  23
  24 //#define _MARK_ON
  25
  26 #include <stdlib.h>
  27
  28
  29 #include <stdio.h>
  30 #include <string.h>
  31 #include <ctype.h> // for isspace
  32
  33 #include "fix.h"
  34 #include "vecmat.h"
  35 #include "gr.h"
  36 #include "3d.h"
  37 #include "error.h"
  38 #include "palette.h"
  39 #include "iff.h"
  40 #include "mono.h"
  41 #include "texmap.h"
  42 #include "fvi.h"
  43 #include "u_mem.h"
  44 #include "sounds.h"
  45
  46 #include "inferno.h"
  47 #include "endlevel.h"
  48 #include "object.h"
  49 #include "game.h"
  50 #include "screens.h"
  51 #include "gauges.h"
  52 #include "wall.h"
  53 #include "terrain.h"
  54 #include "polyobj.h"
  55 #include "bm.h"
  56 #include "gameseq.h"
  57 #include "newdemo.h"
  58 #include "multi.h"
  59 #include "vclip.h"
  60 #include "fireball.h"
  61 #ifdef NETWORK
  62 #include "network.h"
  63 #endif
  64 #include "text.h"
  65 #include "digi.h"
  66 #include "cfile.h"
  67 #include "compbit.h"
  68 #include "songs.h"
  69 #include "movie.h"
  70 #include "render.h"
  71
  72 typedef struct flythrough_data {
  73         object          *obj;
  74         vms_angvec      angles;                 //orientation in angles
  75         vms_vector      step;                           //how far in a second
  76         vms_vector      angstep;                        //rotation per second
  77         fix                     speed;                  //how fast object is moving
  78         vms_vector      headvec;                        //where we want to be pointing
  79         int                     first_time;             //flag for if first time through
  80         fix                     offset_frac;    //how far off-center as portion of way
  81         fix                     offset_dist;    //how far currently off-center
  82 } flythrough_data;
  83
  84 //endlevel sequence states
  85
  86 #define EL_OFF                          0               //not in endlevel
  87 #define EL_FLYTHROUGH   1               //auto-flythrough in tunnel
  88 #define EL_LOOKBACK             2               //looking back at player
  89 #define EL_OUTSIDE              3               //flying outside for a while
  90 #define EL_STOPPED              4               //stopped, watching explosion
  91 #define EL_PANNING              5               //panning around, watching player
  92 #define EL_CHASING              6               //chasing player to station
  93
  94 #define SHORT_SEQUENCE  1               //if defined, end sequnce when panning starts
  95 //#define STATION_ENABLED       1               //if defined, load & use space station model
  96
  97 int Endlevel_sequence = 0;
  98
  99 extern fix player_speed;
 100
 101 int transition_segnum,exit_segnum;
 102
 103 object *endlevel_camera;
 104
 105 #define FLY_SPEED i2f(50)
 106
 107 void do_endlevel_flythrough(int n);
 108 void draw_stars();
 109 int find_exit_side(object *obj);
 110 void generate_starfield();
 111 void start_endlevel_flythrough(int n,object *obj,fix speed);
 112 void start_rendered_endlevel_sequence();
 113
 114 #ifdef D2_OEM
 115 char movie_table[] =    {       'a','a','a','a','d','d','d','d' };
 116 #else
 117 char movie_table[] =    {       'a','b','c',
 118                                                 #ifndef SHAREWARE
 119                                                         'a',
 120                                                         'd','f','d','f',
 121                                                         'g','h','i','g',
 122                                                         'j','k','l','j',
 123                                                         'm','o','m','o',
 124                                                         'p','q','p','q'
 125                                                 #endif
 126                                         };
 127 #endif
 128
 129 #define N_MOVIES (sizeof(movie_table) / sizeof(*movie_table))
 130
 131 #ifndef SHAREWARE
 132 #ifdef D2_OEM
 133 char movie_table_secret[] = {'a','d'};
 134 #else
 135 char movie_table_secret[] = {'a','d','g','j','m','p'};
 136 #endif
 137 #define N_MOVIES_SECRET (sizeof(movie_table_secret) / sizeof(*movie_table_secret))
 138 #else
 139 #define N_MOVIES_SECRET 0
 140 #endif
 141
 142
 143 #define FLY_ACCEL i2f(5)
 144
 145 fix cur_fly_speed,desired_fly_speed;
 146
 147 extern int matt_find_connect_side(int seg0,int seg1);
 148
 149 grs_bitmap *satellite_bitmap,*station_bitmap,*terrain_bitmap;   //!!*exit_bitmap,
 150 vms_vector satellite_pos,satellite_upvec;
 151 //!!grs_bitmap **exit_bitmap_list[1];
 152 int station_modelnum,exit_modelnum,destroyed_exit_modelnum;
 153
 154 vms_vector station_pos = {0xf8c4<<10,0x3c1c<<12,0x372<<10};
 155
 156 #ifdef STATION_ENABLED
 157 grs_bitmap *station_bitmap;
 158 grs_bitmap **station_bitmap_list[1];
 159 int station_modelnum;
 160 #endif
 161
 162 vms_vector mine_exit_point;
 163 vms_vector mine_ground_exit_point;
 164 vms_vector mine_side_exit_point;
 165 vms_matrix mine_exit_orient;
 166
 167 int outside_mine;
 168
 169 grs_bitmap terrain_bm_instance;
 170 grs_bitmap satellite_bm_instance;
 171
 172 //find delta between two angles
 173 fixang delta_ang(fixang a,fixang b)
 174 {
 175         fixang delta0,delta1;
 176
 177         return (abs(delta0 = a - b) < abs(delta1 = b - a)) ? delta0 : delta1;
 178
 179 }
 180
 181 //return though which side of seg0 is seg1
 182 int matt_find_connect_side(int seg0,int seg1)
 183 {
 184         segment *Seg=&Segments[seg0];
 185         int i;
 186
 187         for (i=MAX_SIDES_PER_SEGMENT;i--;) if (Seg->children[i]==seg1) return i;
 188
 189         return -1;
 190 }
 191
 192 extern int Kmatrix_nomovie_message;
 193
 194 #if defined(D2_OEM) || defined(COMPILATION)
 195 #define MOVIE_REQUIRED 0
 196 #else
 197 #define MOVIE_REQUIRED 1
 198 #endif
 199
 200 //returns movie played status.  see movie.h
 201 int start_endlevel_movie()
 202 {
 203         char movie_name[] = "esa.mve";
 204    int r;
 205         ubyte save_pal[768];
 206
 207         Assert(Current_mission_num == 0);               //only play movie for built-in mission
 208
 209         Assert(N_MOVIES >= Last_level);
 210         Assert(N_MOVIES_SECRET >= -Last_secret_level);
 211
 212         #ifndef D2_OEM
 213         if (Current_level_num == Last_level)
 214                 return 1;       //don't play movie
 215         #endif
 216
 217         if (Current_level_num > 0)
 218                 movie_name[2] = movie_table[Current_level_num-1];
 219         else {
 220                 #ifndef SHAREWARE
 221                         return 0;               //no escapes for secret level
 222                 #else
 223                         Error("Invalid level number <%d>",Current_level_num);
 224                 #endif
 225         }
 226
 227         memcpy(save_pal,gr_palette,768);
 228
 229         #if !defined(SHAREWARE) && !defined (NMOVIES)
 230                 r=PlayMovie(movie_name,(Game_mode & GM_MULTI)?0:MOVIE_REQUIRED);
 231         #else
 232                 return  0;      // movie not played for shareware
 233         #endif
 234
 235         if (Newdemo_state == ND_STATE_PLAYBACK) {
 236                 set_screen_mode(SCREEN_GAME);
 237                 memcpy(gr_palette,save_pal,768);
 238         }
 239
 240 #ifdef NETWORK
 241    if (r==MOVIE_NOT_PLAYED && (Game_mode & GM_MULTI))
 242           Kmatrix_nomovie_message=1;
 243         else
 244           Kmatrix_nomovie_message=0;
 245 #endif
 246
 247         return (r);
 248
 249 }
 250
 251 #ifdef SHAREWARE
 252 void
 253 free_endlevel_data()
 254 {
 255         if (terrain_bm_instance.bm_data)
 256                 d_free(terrain_bm_instance.bm_data);
 257
 258         if (satellite_bm_instance.bm_data)
 259                 d_free(satellite_bm_instance.bm_data);
 260 }
 261
 262 void init_endlevel()
 263 {
 264         //##satellite_bitmap = bm_load("earth.bbm");
 265         //##terrain_bitmap = bm_load("moon.bbm");
 266         //##
 267         //##load_terrain("matt5b.bbm");         //load bitmap as height array
 268         //##//load_terrain("ttest2.bbm");               //load bitmap as height array
 269
 270         #ifdef STATION_ENABLED
 271         station_bitmap = bm_load("steel3.bbm");
 272         station_bitmap_list[0] = &station_bitmap;
 273
 274         station_modelnum = load_polygon_model("station.pof",1,station_bitmap_list,NULL);
 275         #endif
 276
 277 //!!    exit_bitmap = bm_load("steel1.bbm");
 278 //!!    exit_bitmap_list[0] = &exit_bitmap;
 279
 280 //!!    exit_modelnum = load_polygon_model("exit01.pof",1,exit_bitmap_list,NULL);
 281 //!!    destroyed_exit_modelnum = load_polygon_model("exit01d.pof",1,exit_bitmap_list,NULL);
 282
 283         generate_starfield();
 284
 285         atexit(free_endlevel_data);
 286
 287         terrain_bm_instance.bm_data = satellite_bm_instance.bm_data = NULL;
 288 }
 289 #endif  //SHAREWARE
 290
 291 object external_explosion;
 292 int ext_expl_playing,mine_destroyed;
 293
 294 extern fix flash_scale;
 295
 296 vms_angvec exit_angles={-0xa00,0,0};
 297
 298 vms_matrix surface_orient;
 299
 300 int endlevel_data_loaded=0;
 301 extern char last_palette_loaded[];
 302
 303 void start_endlevel_sequence()
 304 {
 305         int     i;
 306         int movie_played = MOVIE_NOT_PLAYED;
 307         #if defined(MACINTOSH) && defined(SHAREWARE)
 308         static int inited = 0;
 309
 310         if (!inited) {
 311                 load_exit_models();
 312                 inited = 1;
 313         }
 314         #endif
 315
 316         if (Newdemo_state == ND_STATE_RECORDING)                // stop demo recording
 317                 Newdemo_state = ND_STATE_PAUSED;
 318
 319         if (Newdemo_state == ND_STATE_PLAYBACK) {               // don't do this if in playback mode
 320                 if (Current_mission_num == 0)           //only play movie for built-in mission
 321                         start_endlevel_movie();
 322                 strcpy(last_palette_loaded,"");         //force palette load next time
 323                 return;
 324         }
 325
 326         if (Player_is_dead || ConsoleObject->flags&OF_SHOULD_BE_DEAD)
 327                 return;                         //don't start if dead!
 328
 329         //      Dematerialize Buddy!
 330         for (i=0; i<=Highest_object_index; i++)
 331                 if (Objects[i].type == OBJ_ROBOT)
 332                         if (Robot_info[Objects[i].id].companion) {
 333                                 object_create_explosion(Objects[i].segnum, &Objects[i].pos, F1_0*7/2, VCLIP_POWERUP_DISAPPEARANCE );
 334                                 Objects[i].flags |= OF_SHOULD_BE_DEAD;
 335                         }
 336
 337         Players[Player_num].homing_object_dist = -F1_0; // Turn off homing sound.
 338
 339         reset_rear_view();              //turn off rear view if set
 340
 341 #ifdef NETWORK
 342         if (Game_mode & GM_MULTI) {
 343                 multi_send_endlevel_start(0);
 344                 network_do_frame(1, 1);
 345         }
 346 #endif
 347
 348         if (Current_mission_num == 0) {         //only play movie for built-in mission
 349
 350                 //try playing movie.  If it plays, great. if not, do rendered ending
 351
 352                 if (!(Game_mode & GM_MULTI))
 353                         movie_played = start_endlevel_movie();
 354
 355                 #if defined(SHAREWARE) || defined(NMOVIES)
 356                 if (movie_played == MOVIE_NOT_PLAYED) {         //don't have movie.  Do rendered sequence
 357                 #ifndef WINDOWS
 358                         start_rendered_endlevel_sequence();
 359                 #endif
 360                         return;
 361                 }
 362                 #endif
 363
 364         }
 365         else
 366                 gr_palette_fade_out(gr_palette, 32, 0);
 367
 368         PlayerFinishedLevel(0);         //done with level
 369 }
 370
 371 #if !defined(SHAREWARE) && !defined(NMOVIES)
 372
 373 void do_endlevel_frame() {Int3();}
 374 void stop_endlevel_sequence() {Int3();}
 375 void render_endlevel_frame(fix eye_offset) {Int3();}
 376
 377 #else
 378
 379 static int cockpit_mode_save;
 380
 381 void start_rendered_endlevel_sequence()
 382 {
 383         int last_segnum,exit_side,tunnel_length;
 384
 385         {
 386                 int segnum,old_segnum,entry_side,i;
 387
 388                 //count segments in exit tunnel
 389
 390                 old_segnum = ConsoleObject->segnum;
 391                 exit_side = find_exit_side(ConsoleObject);
 392                 segnum = Segments[old_segnum].children[exit_side];
 393                 tunnel_length = 0;
 394                 do {
 395                         entry_side = matt_find_connect_side(segnum,old_segnum);
 396                         exit_side = Side_opposite[entry_side];
 397                         old_segnum = segnum;
 398                         segnum = Segments[segnum].children[exit_side];
 399                         tunnel_length++;
 400                 } while (segnum >= 0);
 401
 402                 if (segnum != -2) {
 403                         PlayerFinishedLevel(0);         //don't do special sequence
 404                         return;
 405                 }
 406
 407                 last_segnum = old_segnum;
 408
 409                 //now pick transition segnum 1/3 of the way in
 410
 411                 old_segnum = ConsoleObject->segnum;
 412                 exit_side = find_exit_side(ConsoleObject);
 413                 segnum = Segments[old_segnum].children[exit_side];
 414                 i=tunnel_length/3;
 415                 while (i--) {
 416
 417                         entry_side = matt_find_connect_side(segnum,old_segnum);
 418                         exit_side = Side_opposite[entry_side];
 419                         old_segnum = segnum;
 420                         segnum = Segments[segnum].children[exit_side];
 421                 }
 422                 transition_segnum = segnum;
 423
 424         }
 425
 426         cockpit_mode_save = Cockpit_mode;
 427
 428         #ifdef NETWORK
 429         if (Game_mode & GM_MULTI) {
 430                 multi_send_endlevel_start(0);
 431                 network_do_frame(1, 1);
 432         }
 433         #endif
 434
 435         #ifdef SHAREWARE
 436         Assert(last_segnum == exit_segnum);
 437         //      songs_play_song( SONG_ENDLEVEL, 0 );    // JTS: Until we get an exit song, just don't worry
 438         #endif
 439
 440         Endlevel_sequence = EL_FLYTHROUGH;
 441
 442         ConsoleObject->movement_type = MT_NONE;                 //movement handled by flythrough
 443         ConsoleObject->control_type = CT_NONE;
 444
 445         Game_suspended |= SUSP_ROBOTS;          //robots don't move
 446
 447         cur_fly_speed = desired_fly_speed = FLY_SPEED;
 448
 449         start_endlevel_flythrough(0,ConsoleObject,cur_fly_speed);               //initialize
 450
 451         HUD_init_message( TXT_EXIT_SEQUENCE );
 452
 453         outside_mine = ext_expl_playing = 0;
 454
 455         flash_scale = f1_0;
 456
 457         //init_endlevel();
 458
 459         mine_destroyed=0;
 460
 461 }
 462
 463 extern flythrough_data fly_objects[];
 464
 465 extern object *slew_obj;
 466
 467 vms_angvec player_angles,player_dest_angles;
 468 vms_angvec camera_desired_angles,camera_cur_angles;
 469
 470 #define CHASE_TURN_RATE (0x4000/4)              //max turn per second
 471
 472 //returns bitmask of which angles are at dest. bits 0,1,2 = p,b,h
 473 int chase_angles(vms_angvec *cur_angles,vms_angvec *desired_angles)
 474 {
 475         vms_angvec delta_angs,alt_angles,alt_delta_angs;
 476         fix total_delta,alt_total_delta;
 477         fix frame_turn;
 478         int mask=0;
 479
 480         delta_angs.p = desired_angles->p - cur_angles->p;
 481         delta_angs.h = desired_angles->h - cur_angles->h;
 482         delta_angs.b = desired_angles->b - cur_angles->b;
 483 //delta_angs.b = 0;
 484
 485 //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);
 486
 487         total_delta = abs(delta_angs.p) + abs(delta_angs.b) + abs(delta_angs.h);
 488
 489         alt_angles.p = f1_0/2 - cur_angles->p;
 490         alt_angles.b = cur_angles->b + f1_0/2;
 491         alt_angles.h = cur_angles->h + f1_0/2;
 492
 493         alt_delta_angs.p = desired_angles->p - alt_angles.p;
 494         alt_delta_angs.h = desired_angles->h - alt_angles.h;
 495         alt_delta_angs.b = desired_angles->b - alt_angles.b;
 496 //alt_delta_angs.b = 0;
 497
 498         alt_total_delta = abs(alt_delta_angs.p) + abs(alt_delta_angs.b) + abs(alt_delta_angs.h);
 499
 500 //printf("Total delta = %x, alt total_delta = %x\n",total_delta,alt_total_delta);
 501
 502         if (alt_total_delta < total_delta) {
 503                 //mprintf((0,"FLIPPING ANGLES!\n"));
 504                 //printf("FLIPPING ANGLES!\n");
 505                 *cur_angles = alt_angles;
 506                 delta_angs = alt_delta_angs;
 507         }
 508
 509         frame_turn = fixmul(FrameTime,CHASE_TURN_RATE);
 510
 511         if (abs(delta_angs.p) < frame_turn) {
 512                 cur_angles->p = desired_angles->p;
 513                 mask |= 1;
 514         }
 515         else
 516                 if (delta_angs.p > 0)
 517                         cur_angles->p += frame_turn;
 518                 else
 519                         cur_angles->p -= frame_turn;
 520
 521         if (abs(delta_angs.b) < frame_turn) {
 522                 cur_angles->b = desired_angles->b;
 523                 mask |= 2;
 524         }
 525         else
 526                 if (delta_angs.b > 0)
 527                         cur_angles->b += frame_turn;
 528                 else
 529                         cur_angles->b -= frame_turn;
 530 //cur_angles->b = 0;
 531
 532         if (abs(delta_angs.h) < frame_turn) {
 533                 cur_angles->h = desired_angles->h;
 534                 mask |= 4;
 535         }
 536         else
 537                 if (delta_angs.h > 0)
 538                         cur_angles->h += frame_turn;
 539                 else
 540                         cur_angles->h -= frame_turn;
 541
 542         return mask;
 543 }
 544
 545 void stop_endlevel_sequence()
 546 {
 547         Interpolation_method = 0;
 548
 549         gr_palette_fade_out(gr_palette, 32, 0);
 550
 551         select_cockpit(cockpit_mode_save);
 552
 553         Endlevel_sequence = EL_OFF;
 554
 555         PlayerFinishedLevel(0);
 556
 557 }
 558
 559 #define VCLIP_BIG_PLAYER_EXPLOSION      58
 560
 561 //--unused-- vms_vector upvec = {0,f1_0,0};
 562
 563 //find the angle between the player's heading & the station
 564 void get_angs_to_object(vms_angvec *av,vms_vector *targ_pos,vms_vector *cur_pos)
 565 {
 566         vms_vector tv;
 567
 568         vm_vec_sub(&tv,targ_pos,cur_pos);
 569
 570         vm_extract_angles_vector(av,&tv);
 571 }
 572
 573 void do_endlevel_frame()
 574 {
 575         #if defined(SHAREWARE) || defined(NMOVIES)
 576         static fix timer;
 577         static fix bank_rate;
 578         #endif
 579         vms_vector save_last_pos;
 580         static fix explosion_wait1=0;
 581         static fix explosion_wait2=0;
 582         static fix ext_expl_halflife;
 583
 584         save_last_pos = ConsoleObject->last_pos;        //don't let move code change this
 585         object_move_all();
 586         ConsoleObject->last_pos = save_last_pos;
 587
 588         if (ext_expl_playing) {
 589
 590                 external_explosion.lifeleft -= FrameTime;
 591                 do_explosion_sequence(&external_explosion);
 592
 593                 if (external_explosion.lifeleft < ext_expl_halflife)
 594                         mine_destroyed = 1;
 595
 596                 if (external_explosion.flags & OF_SHOULD_BE_DEAD)
 597                         ext_expl_playing = 0;
 598         }
 599
 600         if (cur_fly_speed != desired_fly_speed) {
 601                 fix delta = desired_fly_speed - cur_fly_speed;
 602                 fix frame_accel = fixmul(FrameTime,FLY_ACCEL);
 603
 604                 if (abs(delta) < frame_accel)
 605                         cur_fly_speed = desired_fly_speed;
 606                 else
 607                         if (delta > 0)
 608                                 cur_fly_speed += frame_accel;
 609                         else
 610                                 cur_fly_speed -= frame_accel;
 611         }
 612
 613         //do big explosions
 614         if (!outside_mine) {
 615
 616                 if (Endlevel_sequence==EL_OUTSIDE) {
 617                         vms_vector tvec;
 618
 619                         vm_vec_sub(&tvec,&ConsoleObject->pos,&mine_side_exit_point);
 620
 621                         if (vm_vec_dot(&tvec,&mine_exit_orient.fvec) > 0) {
 622                                 object *tobj;
 623
 624                                 outside_mine = 1;
 625
 626                                 tobj = object_create_explosion(exit_segnum,&mine_side_exit_point,i2f(50),VCLIP_BIG_PLAYER_EXPLOSION);
 627
 628                                 if (tobj) {
 629                                         external_explosion = *tobj;
 630
 631                                         tobj->flags |= OF_SHOULD_BE_DEAD;
 632
 633                                         flash_scale = 0;        //kill lights in mine
 634
 635                                         ext_expl_halflife = tobj->lifeleft;
 636
 637                                         ext_expl_playing = 1;
 638                                 }
 639
 640                                 digi_link_sound_to_pos( SOUND_BIG_ENDLEVEL_EXPLOSION, exit_segnum, 0, &mine_side_exit_point, 0, i2f(3)/4 );
 641                         }
 642                 }
 643
 644                 //do explosions chasing player
 645                 if ((explosion_wait1-=FrameTime) < 0) {
 646                         vms_vector tpnt;
 647                         int segnum;
 648                         object *expl;
 649                         static int sound_count;
 650
 651                         vm_vec_scale_add(&tpnt,&ConsoleObject->pos,&ConsoleObject->orient.fvec,-ConsoleObject->size*5);
 652                         vm_vec_scale_add2(&tpnt,&ConsoleObject->orient.rvec,(d_rand()-RAND_MAX/2)*15);
 653                         vm_vec_scale_add2(&tpnt,&ConsoleObject->orient.uvec,(d_rand()-RAND_MAX/2)*15);
 654
 655                         segnum = find_point_seg(&tpnt,ConsoleObject->segnum);
 656
 657                         if (segnum != -1) {
 658                                 expl = object_create_explosion(segnum,&tpnt,i2f(20),VCLIP_BIG_PLAYER_EXPLOSION);
 659                                 if (d_rand()<10000 || ++sound_count==7) {               //pseudo-random
 660                                         digi_link_sound_to_pos( SOUND_TUNNEL_EXPLOSION, segnum, 0, &tpnt, 0, F1_0 );
 661                                         sound_count=0;
 662                                 }
 663                         }
 664
 665                         explosion_wait1 = 0x2000 + d_rand()/4;
 666
 667                 }
 668         }
 669
 670         //do little explosions on walls
 671         if (Endlevel_sequence >= EL_FLYTHROUGH && Endlevel_sequence < EL_OUTSIDE)
 672                 if ((explosion_wait2-=FrameTime) < 0) {
 673                         vms_vector tpnt;
 674                         fvi_query fq;
 675                         fvi_info hit_data;
 676
 677                         //create little explosion on wall
 678
 679                         vm_vec_copy_scale(&tpnt,&ConsoleObject->orient.rvec,(d_rand()-RAND_MAX/2)*100);
 680                         vm_vec_scale_add2(&tpnt,&ConsoleObject->orient.uvec,(d_rand()-RAND_MAX/2)*100);
 681                         vm_vec_add2(&tpnt,&ConsoleObject->pos);
 682
 683                         if (Endlevel_sequence == EL_FLYTHROUGH)
 684                                 vm_vec_scale_add2(&tpnt,&ConsoleObject->orient.fvec,d_rand()*200);
 685                         else
 686                                 vm_vec_scale_add2(&tpnt,&ConsoleObject->orient.fvec,d_rand()*60);
 687
 688                         //find hit point on wall
 689
 690                         fq.p0 = &ConsoleObject->pos;
 691                         fq.p1 = &tpnt;
 692                         fq.startseg = ConsoleObject->segnum;
 693                         fq.rad = 0;
 694                         fq.thisobjnum = 0;
 695                         fq.ignore_obj_list = NULL;
 696                         fq.flags = 0;
 697
 698                         find_vector_intersection(&fq,&hit_data);
 699
 700                         if (hit_data.hit_type==HIT_WALL && hit_data.hit_seg!=-1)
 701                                 object_create_explosion(hit_data.hit_seg,&hit_data.hit_pnt,i2f(3)+d_rand()*6,VCLIP_SMALL_EXPLOSION);
 702
 703                         explosion_wait2 = (0xa00 + d_rand()/8)/2;
 704                 }
 705
 706         switch (Endlevel_sequence) {
 707
 708                 case EL_OFF: return;
 709
 710                 case EL_FLYTHROUGH: {
 711
 712                         do_endlevel_flythrough(0);
 713
 714                         if (ConsoleObject->segnum == transition_segnum) {
 715
 716                                 #if !defined(SHAREWARE) && !defined(NMOVIES)
 717                                         start_endlevel_movie();
 718                                         stop_endlevel_sequence();
 719                                 #else
 720
 721                                 int objnum;
 722
 723                                 //songs_play_song( SONG_ENDLEVEL, 0 );
 724
 725                                 Endlevel_sequence = EL_LOOKBACK;
 726
 727                                 objnum = obj_create(OBJ_CAMERA, 0,
 728                                         ConsoleObject->segnum,&ConsoleObject->pos,&ConsoleObject->orient,0,
 729                                         CT_NONE,MT_NONE,RT_NONE);
 730
 731                                 if (objnum == -1) {                             //can't get object, so abort
 732                                         mprintf((1, "Can't get object for endlevel sequence.  Aborting endlevel sequence.\n"));
 733                                         stop_endlevel_sequence();
 734                                         return;
 735                                 }
 736
 737                                 Viewer = endlevel_camera = &Objects[objnum];
 738
 739                                 select_cockpit(CM_LETTERBOX);
 740
 741                                 fly_objects[1] = fly_objects[0];
 742                                 fly_objects[1].obj = endlevel_camera;
 743                                 fly_objects[1].speed = (5*cur_fly_speed)/4;
 744                                 fly_objects[1].offset_frac = 0x4000;
 745
 746                                 vm_vec_scale_add2(&endlevel_camera->pos,&endlevel_camera->orient.fvec,i2f(7));
 747
 748                                 timer=0x20000;
 749
 750                                 #endif
 751                         }
 752
 753                         break;
 754                 }
 755
 756
 757 #if defined(SHAREWARE) || defined(NMOVIES)
 758                 case EL_LOOKBACK: {
 759
 760                         do_endlevel_flythrough(0);
 761                         do_endlevel_flythrough(1);
 762
 763                         if (timer>0) {
 764
 765                                 timer -= FrameTime;
 766
 767                                 if (timer < 0)          //reduce speed
 768                                         fly_objects[1].speed = fly_objects[0].speed;
 769                         }
 770
 771                         if (endlevel_camera->segnum == exit_segnum) {
 772                                 vms_angvec cam_angles,exit_seg_angles;
 773
 774                                 Endlevel_sequence = EL_OUTSIDE;
 775
 776                                 timer = i2f(2);
 777
 778                                 vm_vec_negate(&endlevel_camera->orient.fvec);
 779                                 vm_vec_negate(&endlevel_camera->orient.rvec);
 780
 781                                 vm_extract_angles_matrix(&cam_angles,&endlevel_camera->orient);
 782                                 vm_extract_angles_matrix(&exit_seg_angles,&mine_exit_orient);
 783                                 bank_rate = (-exit_seg_angles.b - cam_angles.b)/2;
 784
 785                                 ConsoleObject->control_type = endlevel_camera->control_type = CT_NONE;
 786
 787 #ifdef SLEW_ON
 788  slew_obj = endlevel_camera;
 789 #endif
 790                         }
 791
 792                         break;
 793                 }
 794
 795                 case EL_OUTSIDE: {
 796                         #ifndef SLEW_ON
 797                         vms_angvec cam_angles;
 798                         #endif
 799
 800                         vm_vec_scale_add2(&ConsoleObject->pos,&ConsoleObject->orient.fvec,fixmul(FrameTime,cur_fly_speed));
 801 #ifndef SLEW_ON
 802                         vm_vec_scale_add2(&endlevel_camera->pos,&endlevel_camera->orient.fvec,fixmul(FrameTime,-2*cur_fly_speed));
 803                         vm_vec_scale_add2(&endlevel_camera->pos,&endlevel_camera->orient.uvec,fixmul(FrameTime,-cur_fly_speed/10));
 804
 805                         vm_extract_angles_matrix(&cam_angles,&endlevel_camera->orient);
 806                         cam_angles.b += fixmul(bank_rate,FrameTime);
 807                         vm_angles_2_matrix(&endlevel_camera->orient,&cam_angles);
 808 #endif
 809
 810                         timer -= FrameTime;
 811
 812                         if (timer < 0) {
 813
 814                                 Endlevel_sequence = EL_STOPPED;
 815
 816                                 vm_extract_angles_matrix(&player_angles,&ConsoleObject->orient);
 817
 818                                 timer = i2f(3);
 819
 820                         }
 821
 822                         break;
 823                 }
 824
 825                 case EL_STOPPED: {
 826
 827                         get_angs_to_object(&player_dest_angles,&station_pos,&ConsoleObject->pos);
 828                         chase_angles(&player_angles,&player_dest_angles);
 829                         vm_angles_2_matrix(&ConsoleObject->orient,&player_angles);
 830
 831                         vm_vec_scale_add2(&ConsoleObject->pos,&ConsoleObject->orient.fvec,fixmul(FrameTime,cur_fly_speed));
 832
 833                         timer -= FrameTime;
 834
 835                         if (timer < 0) {
 836
 837                                 #ifdef SLEW_ON
 838                                 slew_obj = endlevel_camera;
 839                                 _do_slew_movement(endlevel_camera,1,1);
 840                                 timer += FrameTime;             //make time stop
 841                                 break;
 842                                 #else
 843
 844                                 #ifdef SHORT_SEQUENCE
 845
 846                                 stop_endlevel_sequence();
 847
 848                                 #else
 849                                 Endlevel_sequence = EL_PANNING;
 850
 851                                 vm_extract_angles_matrix(&camera_cur_angles,&endlevel_camera->orient);
 852
 853
 854                                 timer = i2f(3);
 855
 856                                 if (Game_mode & GM_MULTI) { // try to skip part of the seq if multiplayer
 857                                         stop_endlevel_sequence();
 858                                         return;
 859                                 }
 860
 861                                 //mprintf((0,"Switching to pan...\n"));
 862                                 #endif          //SHORT_SEQUENCE
 863                                 #endif          //SLEW_ON
 864
 865                         }
 866                         break;
 867                 }
 868
 869                 #ifndef SHORT_SEQUENCE
 870                 case EL_PANNING: {
 871                         #ifndef SLEW_ON
 872                         int mask;
 873                         #endif
 874
 875                         get_angs_to_object(&player_dest_angles,&station_pos,&ConsoleObject->pos);
 876                         chase_angles(&player_angles,&player_dest_angles);
 877                         vm_angles_2_matrix(&ConsoleObject->orient,&player_angles);
 878                         vm_vec_scale_add2(&ConsoleObject->pos,&ConsoleObject->orient.fvec,fixmul(FrameTime,cur_fly_speed));
 879
 880                         #ifdef SLEW_ON
 881                         _do_slew_movement(endlevel_camera,1,1);
 882                         #else
 883
 884                         get_angs_to_object(&camera_desired_angles,&ConsoleObject->pos,&endlevel_camera->pos);
 885                         mask = chase_angles(&camera_cur_angles,&camera_desired_angles);
 886                         vm_angles_2_matrix(&endlevel_camera->orient,&camera_cur_angles);
 887
 888                         if ((mask&5) == 5) {
 889
 890                                 vms_vector tvec;
 891
 892                                 Endlevel_sequence = EL_CHASING;
 893
 894                                 vm_vec_normalized_dir_quick(&tvec,&station_pos,&ConsoleObject->pos);
 895                                 vm_vector_2_matrix(&ConsoleObject->orient,&tvec,&surface_orient.uvec,NULL);
 896
 897                                 desired_fly_speed *= 2;
 898
 899                                 //mprintf((0,"Switching to chase...\n"));
 900
 901                         }
 902                         #endif
 903
 904                         break;
 905                 }
 906
 907                 case EL_CHASING: {
 908                         fix d,speed_scale;
 909
 910                         #ifdef SLEW_ON
 911                         _do_slew_movement(endlevel_camera,1,1);
 912                         #endif
 913
 914                         get_angs_to_object(&camera_desired_angles,&ConsoleObject->pos,&endlevel_camera->pos);
 915                         chase_angles(&camera_cur_angles,&camera_desired_angles);
 916
 917                         #ifndef SLEW_ON
 918                         vm_angles_2_matrix(&endlevel_camera->orient,&camera_cur_angles);
 919                         #endif
 920
 921                         d = vm_vec_dist_quick(&ConsoleObject->pos,&endlevel_camera->pos);
 922
 923                         speed_scale = fixdiv(d,i2f(0x20));
 924                         if (d<f1_0) d=f1_0;
 925
 926                         get_angs_to_object(&player_dest_angles,&station_pos,&ConsoleObject->pos);
 927                         chase_angles(&player_angles,&player_dest_angles);
 928                         vm_angles_2_matrix(&ConsoleObject->orient,&player_angles);
 929
 930                         vm_vec_scale_add2(&ConsoleObject->pos,&ConsoleObject->orient.fvec,fixmul(FrameTime,cur_fly_speed));
 931                         #ifndef SLEW_ON
 932                         vm_vec_scale_add2(&endlevel_camera->pos,&endlevel_camera->orient.fvec,fixmul(FrameTime,fixmul(speed_scale,cur_fly_speed)));
 933
 934                         if (vm_vec_dist(&ConsoleObject->pos,&station_pos) < i2f(10))
 935                                 stop_endlevel_sequence();
 936                         #endif
 937
 938                         break;
 939
 940                 }
 941                 #endif          //ifdef SHORT_SEQUENCE
 942 #endif
 943
 944         }
 945 }
 946
 947
 948 #define MIN_D 0x100
 949
 950 //find which side to fly out of
 951 int find_exit_side(object *obj)
 952 {
 953         int i;
 954         vms_vector prefvec,segcenter,sidevec;
 955         fix best_val=-f2_0;
 956         int best_side;
 957         segment *pseg = &Segments[obj->segnum];
 958
 959         //find exit side
 960
 961         vm_vec_normalized_dir_quick(&prefvec,&obj->pos,&obj->last_pos);
 962
 963         compute_segment_center(&segcenter,pseg);
 964
 965         best_side=-1;
 966         for (i=MAX_SIDES_PER_SEGMENT;--i >= 0;) {
 967                 fix d;
 968
 969                 if (pseg->children[i]!=-1) {
 970
 971                         compute_center_point_on_side(&sidevec,pseg,i);
 972                         vm_vec_normalized_dir_quick(&sidevec,&sidevec,&segcenter);
 973                         d = vm_vec_dotprod(&sidevec,&prefvec);
 974
 975                         if (labs(d) < MIN_D) d=0;
 976
 977                         if (d > best_val) {best_val=d; best_side=i;}
 978
 979                 }
 980         }
 981
 982         Assert(best_side!=-1);
 983
 984         return best_side;
 985 }
 986
 987 extern fix Render_zoom;                                                 //the player's zoom factor
 988
 989 extern vms_vector Viewer_eye;   //valid during render
 990
 991 void draw_exit_model()
 992 {
 993         vms_vector model_pos;
 994         int f=15,u=0;   //21;
 995
 996         vm_vec_scale_add(&model_pos,&mine_exit_point,&mine_exit_orient.fvec,i2f(f));
 997         vm_vec_scale_add2(&model_pos,&mine_exit_orient.uvec,i2f(u));
 998
 999         draw_polygon_model(&model_pos,&mine_exit_orient,NULL,(mine_destroyed)?destroyed_exit_modelnum:exit_modelnum,0,f1_0,NULL,NULL);
1000
1001 }
1002
1003 int exit_point_bmx,exit_point_bmy;
1004
1005 fix satellite_size = i2f(400);
1006
1007 #define SATELLITE_DIST          i2f(1024)
1008 #define SATELLITE_WIDTH         satellite_size
1009 #define SATELLITE_HEIGHT        ((satellite_size*9)/4)          //((satellite_size*5)/2)
1010
1011 void render_external_scene(fix eye_offset)
1012 {
1013
1014         Viewer_eye = Viewer->pos;
1015
1016         if (eye_offset)
1017                 vm_vec_scale_add2(&Viewer_eye,&Viewer->orient.rvec,eye_offset);
1018
1019         g3_set_view_matrix(&Viewer->pos,&Viewer->orient,Render_zoom);
1020
1021         //g3_draw_horizon(BM_XRGB(0,0,0),BM_XRGB(16,16,16));            //,-1);
1022         gr_clear_canvas(BM_XRGB(0,0,0));
1023
1024         g3_start_instance_matrix(&vmd_zero_vector,&surface_orient);
1025         draw_stars();
1026         g3_done_instance();
1027
1028         {       //draw satellite
1029
1030                 vms_vector delta;
1031                 g3s_point p,top_pnt;
1032
1033                 g3_rotate_point(&p,&satellite_pos);
1034                 g3_rotate_delta_vec(&delta,&satellite_upvec);
1035
1036                 g3_add_delta_vec(&top_pnt,&p,&delta);
1037
1038                 if (! (p.p3_codes & CC_BEHIND)) {
1039                         int save_im = Interpolation_method;
1040                         //p.p3_flags &= ~PF_PROJECTED;
1041                         //g3_project_point(&p);
1042                         if (! (p.p3_flags & PF_OVERFLOW)) {
1043                                 Interpolation_method = 0;
1044                                 //gr_bitmapm(f2i(p.p3_sx)-32,f2i(p.p3_sy)-32,satellite_bitmap);
1045                                 g3_draw_rod_tmap(satellite_bitmap,&p,SATELLITE_WIDTH,&top_pnt,SATELLITE_WIDTH,f1_0);
1046                                 Interpolation_method = save_im;
1047                         }
1048                 }
1049         }
1050
1051         #ifdef STATION_ENABLED
1052         draw_polygon_model(&station_pos,&vmd_identity_matrix,NULL,station_modelnum,0,f1_0,NULL,NULL);
1053         #endif
1054
1055         render_terrain(&mine_ground_exit_point,exit_point_bmx,exit_point_bmy);
1056
1057         draw_exit_model();
1058         if (ext_expl_playing)
1059                 draw_fireball(&external_explosion);
1060
1061         Lighting_on=0;
1062         render_object(ConsoleObject);
1063         Lighting_on=1;
1064 }
1065
1066 #define MAX_STARS 500
1067
1068 vms_vector stars[MAX_STARS];
1069
1070 void generate_starfield()
1071 {
1072         int i;
1073
1074         for (i=0;i<MAX_STARS;i++) {
1075
1076                 stars[i].x = (d_rand() - RAND_MAX/2) << 14;
1077                 stars[i].z = (d_rand() - RAND_MAX/2) << 14;
1078                 stars[i].y = (d_rand()/2) << 14;
1079
1080         }
1081 }
1082
1083 void draw_stars()
1084 {
1085         int i;
1086         int intensity=31;
1087         g3s_point p;
1088
1089         for (i=0;i<MAX_STARS;i++) {
1090
1091                 if ((i&63) == 0) {
1092                         gr_setcolor(BM_XRGB(intensity,intensity,intensity));
1093                         intensity-=3;
1094                 }
1095
1096                 //g3_rotate_point(&p,&stars[i]);
1097                 g3_rotate_delta_vec(&p.p3_vec,&stars[i]);
1098                 g3_code_point(&p);
1099
1100                 if (p.p3_codes == 0) {
1101
1102                         p.p3_flags &= ~PF_PROJECTED;
1103
1104                         g3_project_point(&p);
1105
1106                         gr_pixel(f2i(p.p3_sx),f2i(p.p3_sy));
1107                 }
1108         }
1109
1110 //@@    {
1111 //@@            vms_vector delta;
1112 //@@            g3s_point top_pnt;
1113 //@@
1114 //@@            g3_rotate_point(&p,&satellite_pos);
1115 //@@            g3_rotate_delta_vec(&delta,&satellite_upvec);
1116 //@@
1117 //@@            g3_add_delta_vec(&top_pnt,&p,&delta);
1118 //@@
1119 //@@            if (! (p.p3_codes & CC_BEHIND)) {
1120 //@@                    int save_im = Interpolation_method;
1121 //@@                    Interpolation_method = 0;
1122 //@@                    //p.p3_flags &= ~PF_PROJECTED;
1123 //@@                    g3_project_point(&p);
1124 //@@                    if (! (p.p3_flags & PF_OVERFLOW))
1125 //@@                            //gr_bitmapm(f2i(p.p3_sx)-32,f2i(p.p3_sy)-32,satellite_bitmap);
1126 //@@                            g3_draw_rod_tmap(satellite_bitmap,&p,SATELLITE_WIDTH,&top_pnt,SATELLITE_WIDTH,f1_0);
1127 //@@                    Interpolation_method = save_im;
1128 //@@            }
1129 //@@    }
1130
1131 }
1132
1133 void endlevel_render_mine(fix eye_offset)
1134 {
1135         int start_seg_num;
1136
1137         Viewer_eye = Viewer->pos;
1138
1139         if (Viewer->type == OBJ_PLAYER )
1140                 vm_vec_scale_add2(&Viewer_eye,&Viewer->orient.fvec,(Viewer->size*3)/4);
1141
1142         if (eye_offset)
1143                 vm_vec_scale_add2(&Viewer_eye,&Viewer->orient.rvec,eye_offset);
1144
1145         #ifdef EDITOR
1146         if (Function_mode==FMODE_EDITOR)
1147                 Viewer_eye = Viewer->pos;
1148         #endif
1149
1150         if (Endlevel_sequence >= EL_OUTSIDE) {
1151
1152                 start_seg_num = exit_segnum;
1153         }
1154         else {
1155                 start_seg_num = find_point_seg(&Viewer_eye,Viewer->segnum);
1156
1157                 if (start_seg_num==-1)
1158                         start_seg_num = Viewer->segnum;
1159         }
1160
1161         if (Endlevel_sequence == EL_LOOKBACK) {
1162                 vms_matrix headm,viewm;
1163                 vms_angvec angles = {0,0,0x7fff};
1164
1165                 vm_angles_2_matrix(&headm,&angles);
1166                 vm_matrix_x_matrix(&viewm,&Viewer->orient,&headm);
1167                 g3_set_view_matrix(&Viewer_eye,&viewm,Render_zoom);
1168         }
1169         else
1170                 g3_set_view_matrix(&Viewer_eye,&Viewer->orient,Render_zoom);
1171
1172         render_mine(start_seg_num,eye_offset, 0);
1173 }
1174
1175 void render_endlevel_frame(fix eye_offset)
1176 {
1177
1178         g3_start_frame();
1179
1180         if (Endlevel_sequence < EL_OUTSIDE)
1181                 endlevel_render_mine(eye_offset);
1182         #ifdef SHAREWARE
1183         else
1184                 render_external_scene(eye_offset);
1185         #endif
1186
1187         g3_end_frame();
1188
1189 }
1190
1191
1192 ///////////////////////// copy of flythrough code for endlevel
1193
1194
1195 #define MAX_FLY_OBJECTS 2
1196
1197 flythrough_data fly_objects[MAX_FLY_OBJECTS];
1198
1199 flythrough_data *flydata;
1200
1201 int matt_find_connect_side(int seg0,int seg1);
1202
1203 void compute_segment_center(vms_vector *vp,segment *sp);
1204
1205 fixang delta_ang(fixang a,fixang b);
1206 fixang interp_angle(fixang dest,fixang src,fixang step);
1207
1208 #define DEFAULT_SPEED i2f(16)
1209
1210 #define MIN_D 0x100
1211
1212 //if speed is zero, use default speed
1213 void start_endlevel_flythrough(int n,object *obj,fix speed)
1214 {
1215         flydata = &fly_objects[n];
1216
1217         flydata->obj = obj;
1218
1219         flydata->first_time = 1;
1220
1221         flydata->speed = speed?speed:DEFAULT_SPEED;
1222
1223         flydata->offset_frac = 0;
1224 }
1225
1226 static vms_angvec *angvec_add2_scale(vms_angvec *dest,vms_vector *src,fix s)
1227 {
1228         dest->p += fixmul(src->x,s);
1229         dest->b  += fixmul(src->z,s);
1230         dest->h  += fixmul(src->y,s);
1231
1232         return dest;
1233 }
1234
1235 #define MAX_ANGSTEP     0x4000          //max turn per second
1236
1237 #define MAX_SLIDE_PER_SEGMENT 0x10000
1238
1239 void do_endlevel_flythrough(int n)
1240 {
1241         object *obj;
1242         segment *pseg;
1243         int old_player_seg;
1244
1245         flydata = &fly_objects[n];
1246         obj = flydata->obj;
1247
1248         old_player_seg = obj->segnum;
1249
1250         //move the player for this frame
1251
1252         if (!flydata->first_time) {
1253
1254                 vm_vec_scale_add2(&obj->pos,&flydata->step,FrameTime);
1255                 angvec_add2_scale(&flydata->angles,&flydata->angstep,FrameTime);
1256
1257                 vm_angles_2_matrix(&obj->orient,&flydata->angles);
1258         }
1259
1260         //check new player seg
1261
1262         update_object_seg(obj);
1263         pseg = &Segments[obj->segnum];
1264
1265         if (flydata->first_time || obj->segnum != old_player_seg) {             //moved into new seg
1266                 vms_vector curcenter,nextcenter;
1267                 fix step_size,seg_time;
1268                 short entry_side,exit_side = -1;//what sides we entry and leave through
1269                 vms_vector dest_point;          //where we are heading (center of exit_side)
1270                 vms_angvec dest_angles;         //where we want to be pointing
1271                 vms_matrix dest_orient;
1272                 int up_side=0;
1273
1274                 entry_side=0;
1275
1276                 //find new exit side
1277
1278                 if (!flydata->first_time) {
1279
1280                         entry_side = matt_find_connect_side(obj->segnum,old_player_seg);
1281                         exit_side = Side_opposite[entry_side];
1282                 }
1283
1284                 if (flydata->first_time || entry_side==-1 || pseg->children[exit_side]==-1)
1285                         exit_side = find_exit_side(obj);
1286
1287                 {                                                                               //find closest side to align to
1288                         fix d,largest_d=-f1_0;
1289                         int i;
1290
1291                         for (i=0;i<6;i++) {
1292                                 #ifdef COMPACT_SEGS
1293                                 vms_vector v1;
1294                                 get_side_normal(pseg, i, 0, &v1 );
1295                                 d = vm_vec_dot(&v1,&flydata->obj->orient.uvec);
1296                                 #else
1297                                 d = vm_vec_dot(&pseg->sides[i].normals[0],&flydata->obj->orient.uvec);
1298                                 #endif
1299                                 if (d > largest_d) {largest_d = d; up_side=i;}
1300                         }
1301
1302                 }
1303
1304                 //update target point & angles
1305
1306                 compute_center_point_on_side(&dest_point,pseg,exit_side);
1307
1308                 //update target point and movement points
1309
1310                 //offset object sideways
1311                 if (flydata->offset_frac) {
1312                         int s0=-1,s1=0,i;
1313                         vms_vector s0p,s1p;
1314                         fix dist;
1315
1316                         for (i=0;i<6;i++)
1317                                 if (i!=entry_side && i!=exit_side && i!=up_side && i!=Side_opposite[up_side])
1318                                  {
1319                                         if (s0==-1)
1320                                                 s0 = i;
1321                                         else
1322                                                 s1 = i;
1323                                  }
1324
1325                         compute_center_point_on_side(&s0p,pseg,s0);
1326                         compute_center_point_on_side(&s1p,pseg,s1);
1327                         dist = fixmul(vm_vec_dist(&s0p,&s1p),flydata->offset_frac);
1328
1329                         if (dist-flydata->offset_dist > MAX_SLIDE_PER_SEGMENT)
1330                                 dist = flydata->offset_dist + MAX_SLIDE_PER_SEGMENT;
1331
1332                         flydata->offset_dist = dist;
1333
1334                         vm_vec_scale_add2(&dest_point,&obj->orient.rvec,dist);
1335
1336                 }
1337
1338                 vm_vec_sub(&flydata->step,&dest_point,&obj->pos);
1339                 step_size = vm_vec_normalize_quick(&flydata->step);
1340                 vm_vec_scale(&flydata->step,flydata->speed);
1341
1342                 compute_segment_center(&curcenter,pseg);
1343                 compute_segment_center(&nextcenter,&Segments[pseg->children[exit_side]]);
1344                 vm_vec_sub(&flydata->headvec,&nextcenter,&curcenter);
1345
1346                 #ifdef COMPACT_SEGS
1347                 {
1348                         vms_vector _v1;
1349                         get_side_normal(pseg, up_side, 0, &_v1 );
1350                         vm_vector_2_matrix(&dest_orient,&flydata->headvec,&_v1,NULL);
1351                 }
1352                 #else
1353                 vm_vector_2_matrix(&dest_orient,&flydata->headvec,&pseg->sides[up_side].normals[0],NULL);
1354                 #endif
1355                 vm_extract_angles_matrix(&dest_angles,&dest_orient);
1356
1357                 if (flydata->first_time)
1358                         vm_extract_angles_matrix(&flydata->angles,&obj->orient);
1359
1360                 seg_time = fixdiv(step_size,flydata->speed);    //how long through seg
1361
1362                 if (seg_time) {
1363                         flydata->angstep.x = max(-MAX_ANGSTEP,min(MAX_ANGSTEP,fixdiv(delta_ang(flydata->angles.p,dest_angles.p),seg_time)));
1364                         flydata->angstep.z = max(-MAX_ANGSTEP,min(MAX_ANGSTEP,fixdiv(delta_ang(flydata->angles.b,dest_angles.b),seg_time)));
1365                         flydata->angstep.y = max(-MAX_ANGSTEP,min(MAX_ANGSTEP,fixdiv(delta_ang(flydata->angles.h,dest_angles.h),seg_time)));
1366
1367                 }
1368                 else {
1369                         flydata->angles = dest_angles;
1370                         flydata->angstep.x = flydata->angstep.y = flydata->angstep.z = 0;
1371                 }
1372         }
1373
1374         flydata->first_time=0;
1375 }
1376
1377 #define JOY_NULL 15
1378 #define ROT_SPEED 8             //rate of rotation while key held down
1379 #define VEL_SPEED (15)  //rate of acceleration while key held down
1380
1381 extern short old_joy_x,old_joy_y;       //position last time around
1382
1383 #include "key.h"
1384 #include "joy.h"
1385
1386 #ifdef SLEW_ON          //this is a special routine for slewing around external scene
1387 int _do_slew_movement(object *obj, int check_keys, int check_joy )
1388 {
1389         int moved = 0;
1390         vms_vector svel, movement;                              //scaled velocity (per this frame)
1391         vms_matrix rotmat,new_pm;
1392         int joy_x,joy_y,btns;
1393         int joyx_moved,joyy_moved;
1394         vms_angvec rotang;
1395
1396         if (keyd_pressed[KEY_PAD5])
1397                 vm_vec_zero(&obj->phys_info.velocity);
1398
1399         if (check_keys) {
1400                 obj->phys_info.velocity.x += VEL_SPEED * (key_down_time(KEY_PAD9) - key_down_time(KEY_PAD7));
1401                 obj->phys_info.velocity.y += VEL_SPEED * (key_down_time(KEY_PADMINUS) - key_down_time(KEY_PADPLUS));
1402                 obj->phys_info.velocity.z += VEL_SPEED * (key_down_time(KEY_PAD8) - key_down_time(KEY_PAD2));
1403
1404                 rotang.pitch =  (key_down_time(KEY_LBRACKET) - key_down_time(KEY_RBRACKET))/ROT_SPEED;
1405                 rotang.bank  = (key_down_time(KEY_PAD1) - key_down_time(KEY_PAD3))/ROT_SPEED;
1406                 rotang.head  = (key_down_time(KEY_PAD6) - key_down_time(KEY_PAD4))/ROT_SPEED;
1407         }
1408         else
1409                 rotang.pitch = rotang.bank  = rotang.head  = 0;
1410
1411         //check for joystick movement
1412
1413         if (check_joy && joy_present)   {
1414                 joy_get_pos(&joy_x,&joy_y);
1415                 btns=joy_get_btns();
1416
1417                 joyx_moved = (abs(joy_x - old_joy_x)>JOY_NULL);
1418                 joyy_moved = (abs(joy_y - old_joy_y)>JOY_NULL);
1419
1420                 if (abs(joy_x) < JOY_NULL) joy_x = 0;
1421                 if (abs(joy_y) < JOY_NULL) joy_y = 0;
1422
1423                 if (btns)
1424                         if (!rotang.pitch) rotang.pitch = fixmul(-joy_y * 512,FrameTime); else;
1425                 else
1426                         if (joyy_moved) obj->phys_info.velocity.z = -joy_y * 8192;
1427
1428                 if (!rotang.head) rotang.head = fixmul(joy_x * 512,FrameTime);
1429
1430                 if (joyx_moved) old_joy_x = joy_x;
1431                 if (joyy_moved) old_joy_y = joy_y;
1432         }
1433
1434         moved = rotang.pitch | rotang.bank | rotang.head;
1435
1436         vm_angles_2_matrix(&rotmat,&rotang);
1437         vm_matrix_x_matrix(&new_pm,&obj->orient,&rotmat);
1438         obj->orient = new_pm;
1439         vm_transpose_matrix(&new_pm);           //make those columns rows
1440
1441         moved |= obj->phys_info.velocity.x | obj->phys_info.velocity.y | obj->phys_info.velocity.z;
1442
1443         svel = obj->phys_info.velocity;
1444         vm_vec_scale(&svel,FrameTime);          //movement in this frame
1445         vm_vec_rotate(&movement,&svel,&new_pm);
1446
1447         vm_vec_add2(&obj->pos,&movement);
1448
1449         moved |= (movement.x || movement.y || movement.z);
1450
1451         return moved;
1452 }
1453 #endif
1454
1455 #define LINE_LEN        80
1456 #define NUM_VARS        8
1457
1458 #define STATION_DIST    i2f(1024)
1459
1460 int convert_ext( char *dest, char *ext )
1461 {
1462         char *t;
1463
1464         t = strchr(dest,'.');
1465
1466         if (t && (t-dest <= 8)) {
1467                 t[1] = ext[0];
1468                 t[2] = ext[1];
1469                 t[3] = ext[2];
1470                 return 1;
1471         }
1472         else
1473                 return 0;
1474 }
1475
1476 //called for each level to load & setup the exit sequence
1477 void load_endlevel_data(int level_num)
1478 {
1479         char filename[13];
1480         char line[LINE_LEN],*p;
1481         CFILE *ifile;
1482         int var,segnum,sidenum;
1483         int exit_side=0, i;
1484         int have_binary = 0;
1485
1486         endlevel_data_loaded = 0;               //not loaded yet
1487
1488 try_again:
1489         ;
1490
1491         if (level_num<0)                //secret level
1492                 strcpy(filename,Secret_level_names[-level_num-1]);
1493         else                                    //normal level
1494                 strcpy(filename,Level_names[level_num-1]);
1495
1496         if (!convert_ext(filename,"END"))
1497                 Error("Error converting filename <%s> for endlevel data\n",filename);
1498
1499         ifile = cfopen(filename,"rb");
1500
1501         if (!ifile) {
1502
1503                 convert_ext(filename,"txb");
1504
1505                 ifile = cfopen(filename,"rb");
1506
1507                 if (!ifile) {
1508                         if (level_num==1) {
1509                                 Error("Cannot load file text of binary version of <%s>",filename);
1510                         }
1511                         else {
1512                                 level_num = 1;
1513                                 goto try_again;
1514                         }
1515                 }
1516
1517                 have_binary = 1;
1518         }
1519
1520         //ok...this parser is pretty simple.  It ignores comments, but
1521         //everything else must be in the right place
1522
1523         var = 0;
1524
1525         while (cfgets(line,LINE_LEN,ifile)) {
1526
1527                 if (have_binary) {
1528                         for (i = 0; i < strlen(line) - 1; i++) {
1529                                 encode_rotate_left(&(line[i]));
1530                                 line[i] = line[i] ^ BITMAP_TBL_XOR;
1531                                 encode_rotate_left(&(line[i]));
1532                         }
1533                         p = line;
1534                 }
1535
1536                 if ((p=strchr(line,';'))!=NULL)
1537                         *p = 0;         //cut off comment
1538
1539                 for (p=line+strlen(line)-1;p>line && isspace(*p);*p--=0);
1540                 for (p=line;isspace(*p);p++);
1541
1542                 if (!*p)                //empty line
1543                         continue;
1544
1545                 switch (var) {
1546
1547                         case 0: {                                               //ground terrain
1548                                 int iff_error;
1549                                 ubyte pal[768];
1550
1551                                 if (terrain_bm_instance.bm_data)
1552                                         d_free(terrain_bm_instance.bm_data);
1553
1554                                 Assert(terrain_bm_instance.bm_data == NULL);
1555
1556                                 iff_error = iff_read_bitmap(p,&terrain_bm_instance,BM_LINEAR,pal);
1557                                 if (iff_error != IFF_NO_ERROR) {
1558                                         mprintf((1, "File %s - IFF error: %s",p,iff_errormsg(iff_error)));
1559                                         Error("File %s - IFF error: %s",p,iff_errormsg(iff_error));
1560                                 }
1561
1562                                 terrain_bitmap = &terrain_bm_instance;
1563
1564                                 gr_remap_bitmap_good( terrain_bitmap, pal, iff_transparent_color, -1);
1565
1566                                 break;
1567                         }
1568
1569                         case 1:                                                 //height map
1570
1571                                 load_terrain(p);
1572                                 break;
1573
1574
1575                         case 2:
1576
1577                                 sscanf(p,"%d,%d",&exit_point_bmx,&exit_point_bmy);
1578                                 break;
1579
1580                         case 3:                                                 //exit heading
1581
1582                                 exit_angles.h = i2f(atoi(p))/360;
1583                                 break;
1584
1585                         case 4: {                                               //planet bitmap
1586                                 int iff_error;
1587                                 ubyte pal[768];
1588
1589                                 if (satellite_bm_instance.bm_data)
1590                                         d_free(satellite_bm_instance.bm_data);
1591
1592                                 iff_error = iff_read_bitmap(p,&satellite_bm_instance,BM_LINEAR,pal);
1593                                 if (iff_error != IFF_NO_ERROR) {
1594                                         mprintf((1, "File %s - IFF error: %s",p,iff_errormsg(iff_error)));
1595                                         Error("File %s - IFF error: %s",p,iff_errormsg(iff_error));
1596                                 }
1597
1598                                 satellite_bitmap = &satellite_bm_instance;
1599                                 gr_remap_bitmap_good( satellite_bitmap, pal, iff_transparent_color, -1);
1600
1601                                 break;
1602                         }
1603
1604                         case 5:                                                 //earth pos
1605                         case 7: {                                               //station pos
1606                                 vms_matrix tm;
1607                                 vms_angvec ta;
1608                                 int pitch,head;
1609
1610                                 sscanf(p,"%d,%d",&head,&pitch);
1611
1612                                 ta.h = i2f(head)/360;
1613                                 ta.p = -i2f(pitch)/360;
1614                                 ta.b = 0;
1615
1616                                 vm_angles_2_matrix(&tm,&ta);
1617
1618                                 if (var==5)
1619                                         satellite_pos = tm.fvec;
1620                                         //vm_vec_copy_scale(&satellite_pos,&tm.fvec,SATELLITE_DIST);
1621                                 else
1622                                         station_pos = tm.fvec;
1623
1624                                 break;
1625                         }
1626
1627                         case 6:                                         //planet size
1628                                 satellite_size = i2f(atoi(p));
1629                                 break;
1630                 }
1631
1632                 var++;
1633
1634         }
1635
1636         Assert(var == NUM_VARS);
1637
1638
1639         // OK, now the data is loaded.  Initialize everything
1640
1641         //find the exit sequence by searching all segments for a side with
1642         //children == -2
1643
1644         for (segnum=0,exit_segnum=-1;exit_segnum==-1 && segnum<=Highest_segment_index;segnum++)
1645                 for (sidenum=0;sidenum<6;sidenum++)
1646                         if (Segments[segnum].children[sidenum] == -2) {
1647                                 exit_segnum = segnum;
1648                                 exit_side = sidenum;
1649                                 break;
1650                         }
1651
1652         Assert(exit_segnum!=-1);
1653
1654         compute_segment_center(&mine_exit_point,&Segments[exit_segnum]);
1655         extract_orient_from_segment(&mine_exit_orient,&Segments[exit_segnum]);
1656         compute_center_point_on_side(&mine_side_exit_point,&Segments[exit_segnum],exit_side);
1657
1658         vm_vec_scale_add(&mine_ground_exit_point,&mine_exit_point,&mine_exit_orient.uvec,-i2f(20));
1659
1660         //compute orientation of surface
1661         {
1662                 vms_vector tv;
1663                 vms_matrix exit_orient,tm;
1664
1665                 vm_angles_2_matrix(&exit_orient,&exit_angles);
1666                 vm_transpose_matrix(&exit_orient);
1667                 vm_matrix_x_matrix(&surface_orient,&mine_exit_orient,&exit_orient);
1668
1669                 vm_copy_transpose_matrix(&tm,&surface_orient);
1670                 vm_vec_rotate(&tv,&station_pos,&tm);
1671                 vm_vec_scale_add(&station_pos,&mine_exit_point,&tv,STATION_DIST);
1672
1673 vm_vec_rotate(&tv,&satellite_pos,&tm);
1674 vm_vec_scale_add(&satellite_pos,&mine_exit_point,&tv,SATELLITE_DIST);
1675
1676 vm_vector_2_matrix(&tm,&tv,&surface_orient.uvec,NULL);
1677 vm_vec_copy_scale(&satellite_upvec,&tm.uvec,SATELLITE_HEIGHT);
1678
1679
1680         }
1681
1682         cfclose(ifile);
1683
1684         endlevel_data_loaded = 1;
1685
1686 }
1687
1688 #endif
1689