main/endlevel.c

   1 /* $Id: endlevel.c,v 1.23 2004-10-09 15:59:28 schaffner Exp $ */
   2 /*
   3 THE COMPUTER CODE CONTAINED HEREIN IS THE SOLE PROPERTY OF PARALLAX
   4 SOFTWARE CORPORATION ("PARALLAX").  PARALLAX, IN DISTRIBUTING THE CODE TO
   5 END-USERS, AND SUBJECT TO ALL OF THE TERMS AND CONDITIONS HEREIN, GRANTS A
   6 ROYALTY-FREE, PERPETUAL LICENSE TO SUCH END-USERS FOR USE BY SUCH END-USERS
   7 IN USING, DISPLAYING,  AND CREATING DERIVATIVE WORKS THEREOF, SO LONG AS
   8 SUCH USE, DISPLAY OR CREATION IS FOR NON-COMMERCIAL, ROYALTY OR REVENUE
   9 FREE PURPOSES.  IN NO EVENT SHALL THE END-USER USE THE COMPUTER CODE
  10 CONTAINED HEREIN FOR REVENUE-BEARING PURPOSES.  THE END-USER UNDERSTANDS
  11 AND AGREES TO THE TERMS HEREIN AND ACCEPTS THE SAME BY USE OF THIS FILE.
  12 COPYRIGHT 1993-1999 PARALLAX SOFTWARE CORPORATION.  ALL RIGHTS RESERVED.
  13 */
  14
  15 /*
  16  *
  17  * Code for rendering external scenes
  18  *
  19  */
  20
  21 #ifdef HAVE_CONFIG_H
  22 #include <conf.h>
  23 #endif
  24
  25 #ifdef RCS
  26 static char rcsid[] = "$Id: endlevel.c,v 1.23 2004-10-09 15:59:28 schaffner Exp $";
  27 #endif
  28
  29 //#define SLEW_ON 1
  30
  31 //#define _MARK_ON
  32
  33 #include <stdlib.h>
  34
  35
  36 #include <stdio.h>
  37 #include <string.h>
  38 #include <ctype.h> // for isspace
  39
  40 #include "fix.h"
  41 #include "vecmat.h"
  42 #include "gr.h"
  43 #include "3d.h"
  44 #include "error.h"
  45 #include "palette.h"
  46 #include "iff.h"
  47 #include "mono.h"
  48 #include "texmap.h"
  49 #include "fvi.h"
  50 #include "u_mem.h"
  51 #include "sounds.h"
  52
  53 #include "inferno.h"
  54 #include "endlevel.h"
  55 #include "object.h"
  56 #include "game.h"
  57 #include "screens.h"
  58 #include "gauges.h"
  59 #include "wall.h"
  60 #include "terrain.h"
  61 #include "polyobj.h"
  62 #include "bm.h"
  63 #include "gameseq.h"
  64 #include "newdemo.h"
  65 #include "multi.h"
  66 #include "vclip.h"
  67 #include "fireball.h"
  68 #ifdef NETWORK
  69 #include "network.h"
  70 #endif
  71 #include "text.h"
  72 #include "digi.h"
  73 #include "cfile.h"
  74 #include "compbit.h"
  75 #include "songs.h"
  76 #include "movie.h"
  77 #include "render.h"
  78
  79 typedef struct flythrough_data {
  80         object          *obj;
  81         vms_angvec      angles;                 //orientation in angles
  82         vms_vector      step;                           //how far in a second
  83         vms_vector      angstep;                        //rotation per second
  84         fix                     speed;                  //how fast object is moving
  85         vms_vector      headvec;                        //where we want to be pointing
  86         int                     first_time;             //flag for if first time through
  87         fix                     offset_frac;    //how far off-center as portion of way
  88         fix                     offset_dist;    //how far currently off-center
  89 } flythrough_data;
  90
  91 //endlevel sequence states
  92
  93 #define EL_OFF                          0               //not in endlevel
  94 #define EL_FLYTHROUGH   1               //auto-flythrough in tunnel
  95 #define EL_LOOKBACK             2               //looking back at player
  96 #define EL_OUTSIDE              3               //flying outside for a while
  97 #define EL_STOPPED              4               //stopped, watching explosion
  98 #define EL_PANNING              5               //panning around, watching player
  99 #define EL_CHASING              6               //chasing player to station
 100
 101 #define SHORT_SEQUENCE  1               //if defined, end sequnce when panning starts
 102 //#define STATION_ENABLED       1               //if defined, load & use space station model
 103
 104 int Endlevel_sequence = 0;
 105
 106 extern fix player_speed;
 107
 108 int transition_segnum,exit_segnum;
 109
 110 object *endlevel_camera;
 111
 112 #define FLY_SPEED i2f(50)
 113
 114 void do_endlevel_flythrough(int n);
 115 void draw_stars();
 116 int find_exit_side(object *obj);
 117 void generate_starfield();
 118 void start_endlevel_flythrough(int n,object *obj,fix speed);
 119 void start_rendered_endlevel_sequence();
 120
 121 #ifdef D2_OEM
 122 char movie_table[] =    {       'a','a','a','a','d','d','d','d' };
 123 #else
 124 char movie_table[] =    {       'a','b','c',
 125                                                 #ifndef SHAREWARE
 126                                                         'a',
 127                                                         'd','f','d','f',
 128                                                         'g','h','i','g',
 129                                                         'j','k','l','j',
 130                                                         'm','o','m','o',
 131                                                         'p','q','p','q'
 132                                                 #endif
 133                                         };
 134 #endif
 135
 136 #define N_MOVIES (sizeof(movie_table) / sizeof(*movie_table))
 137
 138 #ifndef SHAREWARE
 139 #ifdef D2_OEM
 140 char movie_table_secret[] = {'a','d'};
 141 #else
 142 char movie_table_secret[] = {'a','d','g','j','m','p'};
 143 #endif
 144 #define N_MOVIES_SECRET (sizeof(movie_table_secret) / sizeof(*movie_table_secret))
 145 #else
 146 #define N_MOVIES_SECRET 0
 147 #endif
 148
 149
 150 #define FLY_ACCEL i2f(5)
 151
 152 fix cur_fly_speed,desired_fly_speed;
 153
 154 extern int matt_find_connect_side(int seg0,int seg1);
 155
 156 grs_bitmap *satellite_bitmap,*station_bitmap,*terrain_bitmap;   //!!*exit_bitmap,
 157 vms_vector satellite_pos,satellite_upvec;
 158 //!!grs_bitmap **exit_bitmap_list[1];
 159 int station_modelnum,exit_modelnum,destroyed_exit_modelnum;
 160
 161 vms_vector station_pos = {0xf8c4<<10,0x3c1c<<12,0x372<<10};
 162
 163 #ifdef STATION_ENABLED
 164 grs_bitmap *station_bitmap;
 165 grs_bitmap **station_bitmap_list[1];
 166 int station_modelnum;
 167 #endif
 168
 169 vms_vector mine_exit_point;
 170 vms_vector mine_ground_exit_point;
 171 vms_vector mine_side_exit_point;
 172 vms_matrix mine_exit_orient;
 173
 174 int outside_mine;
 175
 176 grs_bitmap terrain_bm_instance;
 177 grs_bitmap satellite_bm_instance;
 178
 179 //find delta between two angles
 180 fixang delta_ang(fixang a,fixang b)
 181 {
 182         fixang delta0,delta1;
 183
 184         return (abs(delta0 = a - b) < abs(delta1 = b - a)) ? delta0 : delta1;
 185
 186 }
 187
 188 //return though which side of seg0 is seg1
 189 int matt_find_connect_side(int seg0,int seg1)
 190 {
 191         segment *Seg=&Segments[seg0];
 192         int i;
 193
 194         for (i=MAX_SIDES_PER_SEGMENT;i--;) if (Seg->children[i]==seg1) return i;
 195
 196         return -1;
 197 }
 198
 199 extern int Kmatrix_nomovie_message;
 200
 201 #if defined(D2_OEM) || defined(COMPILATION)
 202 #define MOVIE_REQUIRED 0
 203 #else
 204 #define MOVIE_REQUIRED 1
 205 #endif
 206
 207 //returns movie played status.  see movie.h
 208 int start_endlevel_movie()
 209 {
 210         char movie_name[] = "esa.mve";
 211         int r;
 212         ubyte save_pal[768];
 213
 214         //Assert(PLAYING_BUILTIN_MISSION); //only play movie for built-in mission
 215
 216         //Assert(N_MOVIES >= Last_level);
 217         //Assert(N_MOVIES_SECRET >= -Last_secret_level);
 218
 219         if (!is_D2_OEM)
 220                 if (Current_level_num == Last_level)
 221                         return 1;   //don't play movie
 222
 223         if (Current_level_num > 0)
 224                 movie_name[2] = movie_table[Current_level_num-1];
 225         else {
 226                 #ifndef SHAREWARE
 227                         return 0;       //no escapes for secret level
 228                 #else
 229                         Error("Invalid level number <%d>",Current_level_num);
 230                 #endif
 231         }
 232
 233         memcpy(save_pal,gr_palette,768);
 234
 235         #ifndef SHAREWARE
 236                 r=PlayMovie(movie_name,(Game_mode & GM_MULTI)?0:MOVIE_REQUIRED);
 237         #else
 238                 return  0;      // movie not played for shareware
 239         #endif
 240
 241         if (Newdemo_state == ND_STATE_PLAYBACK) {
 242                 set_screen_mode(SCREEN_GAME);
 243                 memcpy(gr_palette,save_pal,768);
 244         }
 245
 246 #ifdef NETWORK
 247    if (r==MOVIE_NOT_PLAYED && (Game_mode & GM_MULTI))
 248           Kmatrix_nomovie_message=1;
 249         else
 250           Kmatrix_nomovie_message=0;
 251 #endif
 252
 253         return (r);
 254
 255 }
 256
 257 void
 258 free_endlevel_data()
 259 {
 260         if (terrain_bm_instance.bm_data)
 261                 d_free(terrain_bm_instance.bm_data);
 262
 263         if (satellite_bm_instance.bm_data)
 264                 d_free(satellite_bm_instance.bm_data);
 265 }
 266
 267 void init_endlevel()
 268 {
 269         //##satellite_bitmap = bm_load("earth.bbm");
 270         //##terrain_bitmap = bm_load("moon.bbm");
 271         //##
 272         //##load_terrain("matt5b.bbm");         //load bitmap as height array
 273         //##//load_terrain("ttest2.bbm");               //load bitmap as height array
 274
 275         #ifdef STATION_ENABLED
 276         station_bitmap = bm_load("steel3.bbm");
 277         station_bitmap_list[0] = &station_bitmap;
 278
 279         station_modelnum = load_polygon_model("station.pof",1,station_bitmap_list,NULL);
 280         #endif
 281
 282 //!!    exit_bitmap = bm_load("steel1.bbm");
 283 //!!    exit_bitmap_list[0] = &exit_bitmap;
 284
 285 //!!    exit_modelnum = load_polygon_model("exit01.pof",1,exit_bitmap_list,NULL);
 286 //!!    destroyed_exit_modelnum = load_polygon_model("exit01d.pof",1,exit_bitmap_list,NULL);
 287
 288         generate_starfield();
 289
 290         atexit(free_endlevel_data);
 291
 292         terrain_bm_instance.bm_data = satellite_bm_instance.bm_data = NULL;
 293 }
 294
 295 object external_explosion;
 296 int ext_expl_playing,mine_destroyed;
 297
 298 extern fix flash_scale;
 299
 300 vms_angvec exit_angles={-0xa00,0,0};
 301
 302 vms_matrix surface_orient;
 303
 304 int endlevel_data_loaded=0;
 305 extern char last_palette_loaded[];
 306
 307 void start_endlevel_sequence()
 308 {
 309         int     i;
 310         int movie_played = MOVIE_NOT_PLAYED;
 311
 312         if (Newdemo_state == ND_STATE_RECORDING)                // stop demo recording
 313                 Newdemo_state = ND_STATE_PAUSED;
 314
 315         if (Newdemo_state == ND_STATE_PLAYBACK) {               // don't do this if in playback mode
 316                 if (PLAYING_BUILTIN_MISSION) // only play movie for built-in mission
 317                         start_endlevel_movie();
 318                 strcpy(last_palette_loaded,"");         //force palette load next time
 319                 return;
 320         }
 321
 322         if (Player_is_dead || ConsoleObject->flags&OF_SHOULD_BE_DEAD)
 323                 return;                         //don't start if dead!
 324
 325         //      Dematerialize Buddy!
 326         for (i=0; i<=Highest_object_index; i++)
 327                 if (Objects[i].type == OBJ_ROBOT)
 328                         if (Robot_info[Objects[i].id].companion) {
 329                                 object_create_explosion(Objects[i].segnum, &Objects[i].pos, F1_0*7/2, VCLIP_POWERUP_DISAPPEARANCE );
 330                                 Objects[i].flags |= OF_SHOULD_BE_DEAD;
 331                         }
 332
 333         Players[Player_num].homing_object_dist = -F1_0; // Turn off homing sound.
 334
 335         reset_rear_view();              //turn off rear view if set
 336
 337 #ifdef NETWORK
 338         if (Game_mode & GM_MULTI) {
 339                 multi_send_endlevel_start(0);
 340                 network_do_frame(1, 1);
 341         }
 342 #endif
 343
 344         if (PLAYING_BUILTIN_MISSION) // only play movie for built-in mission
 345                 if (!(Game_mode & GM_MULTI))
 346                         movie_played = start_endlevel_movie();
 347
 348         if (!(Game_mode & GM_MULTI) && (movie_played == MOVIE_NOT_PLAYED) && endlevel_data_loaded)
 349         {   //don't have movie.  Do rendered sequence, if available
 350                 int exit_models_loaded = 0;
 351
 352                 if (Piggy_hamfile_version < 3)
 353                         exit_models_loaded = 1; // built-in for PC shareware
 354
 355                 else
 356                         exit_models_loaded = load_exit_models();
 357
 358 #ifndef WINDOWS
 359                 if (exit_models_loaded)
 360                 {
 361                         start_rendered_endlevel_sequence();
 362                         return;
 363                 }
 364 #endif
 365         }
 366
 367         //don't have movie or rendered sequence, fade out
 368         gr_palette_fade_out(gr_palette, 32, 0);
 369
 370         PlayerFinishedLevel(0);         //done with level
 371 }
 372
 373 static int cockpit_mode_save;
 374
 375 void start_rendered_endlevel_sequence()
 376 {
 377         int last_segnum,exit_side,tunnel_length;
 378
 379         {
 380                 int segnum,old_segnum,entry_side,i;
 381
 382                 //count segments in exit tunnel
 383
 384                 old_segnum = ConsoleObject->segnum;
 385                 exit_side = find_exit_side(ConsoleObject);
 386                 segnum = Segments[old_segnum].children[exit_side];
 387                 tunnel_length = 0;
 388                 do {
 389                         entry_side = matt_find_connect_side(segnum,old_segnum);
 390                         exit_side = Side_opposite[entry_side];
 391                         old_segnum = segnum;
 392                         segnum = Segments[segnum].children[exit_side];
 393                         tunnel_length++;
 394                 } while (segnum >= 0);
 395
 396                 if (segnum != -2) {
 397                         PlayerFinishedLevel(0);         //don't do special sequence
 398                         return;
 399                 }
 400
 401                 last_segnum = old_segnum;
 402
 403                 //now pick transition segnum 1/3 of the way in
 404
 405                 old_segnum = ConsoleObject->segnum;
 406                 exit_side = find_exit_side(ConsoleObject);
 407                 segnum = Segments[old_segnum].children[exit_side];
 408                 i=tunnel_length/3;
 409                 while (i--) {
 410
 411                         entry_side = matt_find_connect_side(segnum,old_segnum);
 412                         exit_side = Side_opposite[entry_side];
 413                         old_segnum = segnum;
 414                         segnum = Segments[segnum].children[exit_side];
 415                 }
 416                 transition_segnum = segnum;
 417
 418         }
 419
 420         cockpit_mode_save = Cockpit_mode;
 421
 422         #ifdef NETWORK
 423         if (Game_mode & GM_MULTI) {
 424                 multi_send_endlevel_start(0);
 425                 network_do_frame(1, 1);
 426         }
 427         #endif
 428
 429         #ifdef SHAREWARE
 430         Assert(last_segnum == exit_segnum);
 431         //      songs_play_song( SONG_ENDLEVEL, 0 );    // JTS: Until we get an exit song, just don't worry
 432         #endif
 433
 434         Endlevel_sequence = EL_FLYTHROUGH;
 435
 436         ConsoleObject->movement_type = MT_NONE;                 //movement handled by flythrough
 437         ConsoleObject->control_type = CT_NONE;
 438
 439         Game_suspended |= SUSP_ROBOTS;          //robots don't move
 440
 441         cur_fly_speed = desired_fly_speed = FLY_SPEED;
 442
 443         start_endlevel_flythrough(0,ConsoleObject,cur_fly_speed);               //initialize
 444
 445         HUD_init_message( TXT_EXIT_SEQUENCE );
 446
 447         outside_mine = ext_expl_playing = 0;
 448
 449         flash_scale = f1_0;
 450
 451         //init_endlevel();
 452
 453         mine_destroyed=0;
 454
 455 }
 456
 457 extern flythrough_data fly_objects[];
 458
 459 extern object *slew_obj;
 460
 461 vms_angvec player_angles,player_dest_angles;
 462 vms_angvec camera_desired_angles,camera_cur_angles;
 463
 464 #define CHASE_TURN_RATE (0x4000/4)              //max turn per second
 465
 466 //returns bitmask of which angles are at dest. bits 0,1,2 = p,b,h
 467 int chase_angles(vms_angvec *cur_angles,vms_angvec *desired_angles)
 468 {
 469         vms_angvec delta_angs,alt_angles,alt_delta_angs;
 470         fix total_delta,alt_total_delta;
 471         fix frame_turn;
 472         int mask=0;
 473
 474         delta_angs.p = desired_angles->p - cur_angles->p;
 475         delta_angs.h = desired_angles->h - cur_angles->h;
 476         delta_angs.b = desired_angles->b - cur_angles->b;
 477 //delta_angs.b = 0;
 478
 479 //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);
 480
 481         total_delta = abs(delta_angs.p) + abs(delta_angs.b) + abs(delta_angs.h);
 482
 483         alt_angles.p = f1_0/2 - cur_angles->p;
 484         alt_angles.b = cur_angles->b + f1_0/2;
 485         alt_angles.h = cur_angles->h + f1_0/2;
 486
 487         alt_delta_angs.p = desired_angles->p - alt_angles.p;
 488         alt_delta_angs.h = desired_angles->h - alt_angles.h;
 489         alt_delta_angs.b = desired_angles->b - alt_angles.b;
 490 //alt_delta_angs.b = 0;
 491
 492         alt_total_delta = abs(alt_delta_angs.p) + abs(alt_delta_angs.b) + abs(alt_delta_angs.h);
 493
 494 //printf("Total delta = %x, alt total_delta = %x\n",total_delta,alt_total_delta);
 495
 496         if (alt_total_delta < total_delta) {
 497                 //mprintf((0,"FLIPPING ANGLES!\n"));
 498                 //printf("FLIPPING ANGLES!\n");
 499                 *cur_angles = alt_angles;
 500                 delta_angs = alt_delta_angs;
 501         }
 502
 503         frame_turn = fixmul(FrameTime,CHASE_TURN_RATE);
 504
 505         if (abs(delta_angs.p) < frame_turn) {
 506                 cur_angles->p = desired_angles->p;
 507                 mask |= 1;
 508         }
 509         else
 510                 if (delta_angs.p > 0)
 511                         cur_angles->p += frame_turn;
 512                 else
 513                         cur_angles->p -= frame_turn;
 514
 515         if (abs(delta_angs.b) < frame_turn) {
 516                 cur_angles->b = desired_angles->b;
 517                 mask |= 2;
 518         }
 519         else
 520                 if (delta_angs.b > 0)
 521                         cur_angles->b += frame_turn;
 522                 else
 523                         cur_angles->b -= frame_turn;
 524 //cur_angles->b = 0;
 525
 526         if (abs(delta_angs.h) < frame_turn) {
 527                 cur_angles->h = desired_angles->h;
 528                 mask |= 4;
 529         }
 530         else
 531                 if (delta_angs.h > 0)
 532                         cur_angles->h += frame_turn;
 533                 else
 534                         cur_angles->h -= frame_turn;
 535
 536         return mask;
 537 }
 538
 539 void stop_endlevel_sequence()
 540 {
 541         Interpolation_method = 0;
 542
 543         gr_palette_fade_out(gr_palette, 32, 0);
 544
 545         select_cockpit(cockpit_mode_save);
 546
 547         Endlevel_sequence = EL_OFF;
 548
 549         PlayerFinishedLevel(0);
 550
 551 }
 552
 553 #define VCLIP_BIG_PLAYER_EXPLOSION      58
 554
 555 //--unused-- vms_vector upvec = {0,f1_0,0};
 556
 557 //find the angle between the player's heading & the station
 558 void get_angs_to_object(vms_angvec *av,vms_vector *targ_pos,vms_vector *cur_pos)
 559 {
 560         vms_vector tv;
 561
 562         vm_vec_sub(&tv,targ_pos,cur_pos);
 563
 564         vm_extract_angles_vector(av,&tv);
 565 }
 566
 567 void do_endlevel_frame()
 568 {
 569         static fix timer;
 570         static fix bank_rate;
 571         vms_vector save_last_pos;
 572         static fix explosion_wait1=0;
 573         static fix explosion_wait2=0;
 574         static fix ext_expl_halflife;
 575
 576         save_last_pos = ConsoleObject->last_pos;        //don't let move code change this
 577         object_move_all();
 578         ConsoleObject->last_pos = save_last_pos;
 579
 580         if (ext_expl_playing) {
 581
 582                 external_explosion.lifeleft -= FrameTime;
 583                 do_explosion_sequence(&external_explosion);
 584
 585                 if (external_explosion.lifeleft < ext_expl_halflife)
 586                         mine_destroyed = 1;
 587
 588                 if (external_explosion.flags & OF_SHOULD_BE_DEAD)
 589                         ext_expl_playing = 0;
 590         }
 591
 592         if (cur_fly_speed != desired_fly_speed) {
 593                 fix delta = desired_fly_speed - cur_fly_speed;
 594                 fix frame_accel = fixmul(FrameTime,FLY_ACCEL);
 595
 596                 if (abs(delta) < frame_accel)
 597                         cur_fly_speed = desired_fly_speed;
 598                 else
 599                         if (delta > 0)
 600                                 cur_fly_speed += frame_accel;
 601                         else
 602                                 cur_fly_speed -= frame_accel;
 603         }
 604
 605         //do big explosions
 606         if (!outside_mine) {
 607
 608                 if (Endlevel_sequence==EL_OUTSIDE) {
 609                         vms_vector tvec;
 610
 611                         vm_vec_sub(&tvec,&ConsoleObject->pos,&mine_side_exit_point);
 612
 613                         if (vm_vec_dot(&tvec,&mine_exit_orient.fvec) > 0) {
 614                                 object *tobj;
 615
 616                                 outside_mine = 1;
 617
 618                                 tobj = object_create_explosion(exit_segnum,&mine_side_exit_point,i2f(50),VCLIP_BIG_PLAYER_EXPLOSION);
 619
 620                                 if (tobj) {
 621                                         external_explosion = *tobj;
 622
 623                                         tobj->flags |= OF_SHOULD_BE_DEAD;
 624
 625                                         flash_scale = 0;        //kill lights in mine
 626
 627                                         ext_expl_halflife = tobj->lifeleft;
 628
 629                                         ext_expl_playing = 1;
 630                                 }
 631
 632                                 digi_link_sound_to_pos( SOUND_BIG_ENDLEVEL_EXPLOSION, exit_segnum, 0, &mine_side_exit_point, 0, i2f(3)/4 );
 633                         }
 634                 }
 635
 636                 //do explosions chasing player
 637                 if ((explosion_wait1-=FrameTime) < 0) {
 638                         vms_vector tpnt;
 639                         int segnum;
 640                         object *expl;
 641                         static int sound_count;
 642
 643                         vm_vec_scale_add(&tpnt,&ConsoleObject->pos,&ConsoleObject->orient.fvec,-ConsoleObject->size*5);
 644                         vm_vec_scale_add2(&tpnt,&ConsoleObject->orient.rvec,(d_rand()-RAND_MAX/2)*15);
 645                         vm_vec_scale_add2(&tpnt,&ConsoleObject->orient.uvec,(d_rand()-RAND_MAX/2)*15);
 646
 647                         segnum = find_point_seg(&tpnt,ConsoleObject->segnum);
 648
 649                         if (segnum != -1) {
 650                                 expl = object_create_explosion(segnum,&tpnt,i2f(20),VCLIP_BIG_PLAYER_EXPLOSION);
 651                                 if (d_rand()<10000 || ++sound_count==7) {               //pseudo-random
 652                                         digi_link_sound_to_pos( SOUND_TUNNEL_EXPLOSION, segnum, 0, &tpnt, 0, F1_0 );
 653                                         sound_count=0;
 654                                 }
 655                         }
 656
 657                         explosion_wait1 = 0x2000 + d_rand()/4;
 658
 659                 }
 660         }
 661
 662         //do little explosions on walls
 663         if (Endlevel_sequence >= EL_FLYTHROUGH && Endlevel_sequence < EL_OUTSIDE)
 664                 if ((explosion_wait2-=FrameTime) < 0) {
 665                         vms_vector tpnt;
 666                         fvi_query fq;
 667                         fvi_info hit_data;
 668
 669                         //create little explosion on wall
 670
 671                         vm_vec_copy_scale(&tpnt,&ConsoleObject->orient.rvec,(d_rand()-RAND_MAX/2)*100);
 672                         vm_vec_scale_add2(&tpnt,&ConsoleObject->orient.uvec,(d_rand()-RAND_MAX/2)*100);
 673                         vm_vec_add2(&tpnt,&ConsoleObject->pos);
 674
 675                         if (Endlevel_sequence == EL_FLYTHROUGH)
 676                                 vm_vec_scale_add2(&tpnt,&ConsoleObject->orient.fvec,d_rand()*200);
 677                         else
 678                                 vm_vec_scale_add2(&tpnt,&ConsoleObject->orient.fvec,d_rand()*60);
 679
 680                         //find hit point on wall
 681
 682                         fq.p0 = &ConsoleObject->pos;
 683                         fq.p1 = &tpnt;
 684                         fq.startseg = ConsoleObject->segnum;
 685                         fq.rad = 0;
 686                         fq.thisobjnum = 0;
 687                         fq.ignore_obj_list = NULL;
 688                         fq.flags = 0;
 689
 690                         find_vector_intersection(&fq,&hit_data);
 691
 692                         if (hit_data.hit_type==HIT_WALL && hit_data.hit_seg!=-1)
 693                                 object_create_explosion(hit_data.hit_seg,&hit_data.hit_pnt,i2f(3)+d_rand()*6,VCLIP_SMALL_EXPLOSION);
 694
 695                         explosion_wait2 = (0xa00 + d_rand()/8)/2;
 696                 }
 697
 698         switch (Endlevel_sequence) {
 699
 700                 case EL_OFF: return;
 701
 702                 case EL_FLYTHROUGH: {
 703
 704                         do_endlevel_flythrough(0);
 705
 706                         if (ConsoleObject->segnum == transition_segnum) {
 707
 708                                 if (PLAYING_BUILTIN_MISSION && start_endlevel_movie() != MOVIE_NOT_PLAYED)
 709                                         stop_endlevel_sequence();
 710                                 else {
 711                                         int objnum;
 712
 713                                         //songs_play_song( SONG_ENDLEVEL, 0 );
 714
 715                                         Endlevel_sequence = EL_LOOKBACK;
 716
 717                                         objnum = obj_create(OBJ_CAMERA, 0,
 718                                                             ConsoleObject->segnum,&ConsoleObject->pos,&ConsoleObject->orient,0,
 719                                                             CT_NONE,MT_NONE,RT_NONE);
 720
 721                                         if (objnum == -1) { //can't get object, so abort
 722                                                 mprintf((1, "Can't get object for endlevel sequence.  Aborting endlevel sequence.\n"));
 723                                                 stop_endlevel_sequence();
 724                                                 return;
 725                                         }
 726
 727                                         Viewer = endlevel_camera = &Objects[objnum];
 728
 729                                         select_cockpit(CM_LETTERBOX);
 730
 731                                         fly_objects[1] = fly_objects[0];
 732                                         fly_objects[1].obj = endlevel_camera;
 733                                         fly_objects[1].speed = (5*cur_fly_speed)/4;
 734                                         fly_objects[1].offset_frac = 0x4000;
 735
 736                                         vm_vec_scale_add2(&endlevel_camera->pos,&endlevel_camera->orient.fvec,i2f(7));
 737
 738                                         timer=0x20000;
 739
 740                                 }
 741                         }
 742
 743                         break;
 744                 }
 745
 746
 747                 case EL_LOOKBACK: {
 748
 749                         do_endlevel_flythrough(0);
 750                         do_endlevel_flythrough(1);
 751
 752                         if (timer>0) {
 753
 754                                 timer -= FrameTime;
 755
 756                                 if (timer < 0)          //reduce speed
 757                                         fly_objects[1].speed = fly_objects[0].speed;
 758                         }
 759
 760                         if (endlevel_camera->segnum == exit_segnum) {
 761                                 vms_angvec cam_angles,exit_seg_angles;
 762
 763                                 Endlevel_sequence = EL_OUTSIDE;
 764
 765                                 timer = i2f(2);
 766
 767                                 vm_vec_negate(&endlevel_camera->orient.fvec);
 768                                 vm_vec_negate(&endlevel_camera->orient.rvec);
 769
 770                                 vm_extract_angles_matrix(&cam_angles,&endlevel_camera->orient);
 771                                 vm_extract_angles_matrix(&exit_seg_angles,&mine_exit_orient);
 772                                 bank_rate = (-exit_seg_angles.b - cam_angles.b)/2;
 773
 774                                 ConsoleObject->control_type = endlevel_camera->control_type = CT_NONE;
 775
 776 #ifdef SLEW_ON
 777  slew_obj = endlevel_camera;
 778 #endif
 779                         }
 780
 781                         break;
 782                 }
 783
 784                 case EL_OUTSIDE: {
 785                         #ifndef SLEW_ON
 786                         vms_angvec cam_angles;
 787                         #endif
 788
 789                         vm_vec_scale_add2(&ConsoleObject->pos,&ConsoleObject->orient.fvec,fixmul(FrameTime,cur_fly_speed));
 790 #ifndef SLEW_ON
 791                         vm_vec_scale_add2(&endlevel_camera->pos,&endlevel_camera->orient.fvec,fixmul(FrameTime,-2*cur_fly_speed));
 792                         vm_vec_scale_add2(&endlevel_camera->pos,&endlevel_camera->orient.uvec,fixmul(FrameTime,-cur_fly_speed/10));
 793
 794                         vm_extract_angles_matrix(&cam_angles,&endlevel_camera->orient);
 795                         cam_angles.b += fixmul(bank_rate,FrameTime);
 796                         vm_angles_2_matrix(&endlevel_camera->orient,&cam_angles);
 797 #endif
 798
 799                         timer -= FrameTime;
 800
 801                         if (timer < 0) {
 802
 803                                 Endlevel_sequence = EL_STOPPED;
 804
 805                                 vm_extract_angles_matrix(&player_angles,&ConsoleObject->orient);
 806
 807                                 timer = i2f(3);
 808
 809                         }
 810
 811                         break;
 812                 }
 813
 814                 case EL_STOPPED: {
 815
 816                         get_angs_to_object(&player_dest_angles,&station_pos,&ConsoleObject->pos);
 817                         chase_angles(&player_angles,&player_dest_angles);
 818                         vm_angles_2_matrix(&ConsoleObject->orient,&player_angles);
 819
 820                         vm_vec_scale_add2(&ConsoleObject->pos,&ConsoleObject->orient.fvec,fixmul(FrameTime,cur_fly_speed));
 821
 822                         timer -= FrameTime;
 823
 824                         if (timer < 0) {
 825
 826                                 #ifdef SLEW_ON
 827                                 slew_obj = endlevel_camera;
 828                                 _do_slew_movement(endlevel_camera,1,1);
 829                                 timer += FrameTime;             //make time stop
 830                                 break;
 831                                 #else
 832
 833                                 #ifdef SHORT_SEQUENCE
 834
 835                                 stop_endlevel_sequence();
 836
 837                                 #else
 838                                 Endlevel_sequence = EL_PANNING;
 839
 840                                 vm_extract_angles_matrix(&camera_cur_angles,&endlevel_camera->orient);
 841
 842
 843                                 timer = i2f(3);
 844
 845                                 if (Game_mode & GM_MULTI) { // try to skip part of the seq if multiplayer
 846                                         stop_endlevel_sequence();
 847                                         return;
 848                                 }
 849
 850                                 //mprintf((0,"Switching to pan...\n"));
 851                                 #endif          //SHORT_SEQUENCE
 852                                 #endif          //SLEW_ON
 853
 854                         }
 855                         break;
 856                 }
 857
 858                 #ifndef SHORT_SEQUENCE
 859                 case EL_PANNING: {
 860                         #ifndef SLEW_ON
 861                         int mask;
 862                         #endif
 863
 864                         get_angs_to_object(&player_dest_angles,&station_pos,&ConsoleObject->pos);
 865                         chase_angles(&player_angles,&player_dest_angles);
 866                         vm_angles_2_matrix(&ConsoleObject->orient,&player_angles);
 867                         vm_vec_scale_add2(&ConsoleObject->pos,&ConsoleObject->orient.fvec,fixmul(FrameTime,cur_fly_speed));
 868
 869                         #ifdef SLEW_ON
 870                         _do_slew_movement(endlevel_camera,1,1);
 871                         #else
 872
 873                         get_angs_to_object(&camera_desired_angles,&ConsoleObject->pos,&endlevel_camera->pos);
 874                         mask = chase_angles(&camera_cur_angles,&camera_desired_angles);
 875                         vm_angles_2_matrix(&endlevel_camera->orient,&camera_cur_angles);
 876
 877                         if ((mask&5) == 5) {
 878
 879                                 vms_vector tvec;
 880
 881                                 Endlevel_sequence = EL_CHASING;
 882
 883                                 vm_vec_normalized_dir_quick(&tvec,&station_pos,&ConsoleObject->pos);
 884                                 vm_vector_2_matrix(&ConsoleObject->orient,&tvec,&surface_orient.uvec,NULL);
 885
 886                                 desired_fly_speed *= 2;
 887
 888                                 //mprintf((0,"Switching to chase...\n"));
 889
 890                         }
 891                         #endif
 892
 893                         break;
 894                 }
 895
 896                 case EL_CHASING: {
 897                         fix d,speed_scale;
 898
 899                         #ifdef SLEW_ON
 900                         _do_slew_movement(endlevel_camera,1,1);
 901                         #endif
 902
 903                         get_angs_to_object(&camera_desired_angles,&ConsoleObject->pos,&endlevel_camera->pos);
 904                         chase_angles(&camera_cur_angles,&camera_desired_angles);
 905
 906                         #ifndef SLEW_ON
 907                         vm_angles_2_matrix(&endlevel_camera->orient,&camera_cur_angles);
 908                         #endif
 909
 910                         d = vm_vec_dist_quick(&ConsoleObject->pos,&endlevel_camera->pos);
 911
 912                         speed_scale = fixdiv(d,i2f(0x20));
 913                         if (d<f1_0) d=f1_0;
 914
 915                         get_angs_to_object(&player_dest_angles,&station_pos,&ConsoleObject->pos);
 916                         chase_angles(&player_angles,&player_dest_angles);
 917                         vm_angles_2_matrix(&ConsoleObject->orient,&player_angles);
 918
 919                         vm_vec_scale_add2(&ConsoleObject->pos,&ConsoleObject->orient.fvec,fixmul(FrameTime,cur_fly_speed));
 920                         #ifndef SLEW_ON
 921                         vm_vec_scale_add2(&endlevel_camera->pos,&endlevel_camera->orient.fvec,fixmul(FrameTime,fixmul(speed_scale,cur_fly_speed)));
 922
 923                         if (vm_vec_dist(&ConsoleObject->pos,&station_pos) < i2f(10))
 924                                 stop_endlevel_sequence();
 925                         #endif
 926
 927                         break;
 928
 929                 }
 930                 #endif          //ifdef SHORT_SEQUENCE
 931
 932         }
 933 }
 934
 935
 936 #define MIN_D 0x100
 937
 938 //find which side to fly out of
 939 int find_exit_side(object *obj)
 940 {
 941         int i;
 942         vms_vector prefvec,segcenter,sidevec;
 943         fix best_val=-f2_0;
 944         int best_side;
 945         segment *pseg = &Segments[obj->segnum];
 946
 947         //find exit side
 948
 949         vm_vec_normalized_dir_quick(&prefvec,&obj->pos,&obj->last_pos);
 950
 951         compute_segment_center(&segcenter,pseg);
 952
 953         best_side=-1;
 954         for (i=MAX_SIDES_PER_SEGMENT;--i >= 0;) {
 955                 fix d;
 956
 957                 if (pseg->children[i]!=-1) {
 958
 959                         compute_center_point_on_side(&sidevec,pseg,i);
 960                         vm_vec_normalized_dir_quick(&sidevec,&sidevec,&segcenter);
 961                         d = vm_vec_dotprod(&sidevec,&prefvec);
 962
 963                         if (labs(d) < MIN_D) d=0;
 964
 965                         if (d > best_val) {best_val=d; best_side=i;}
 966
 967                 }
 968         }
 969
 970         Assert(best_side!=-1);
 971
 972         return best_side;
 973 }
 974
 975 extern fix Render_zoom;                                                 //the player's zoom factor
 976
 977 extern vms_vector Viewer_eye;   //valid during render
 978
 979 void draw_exit_model()
 980 {
 981         vms_vector model_pos;
 982         int f=15,u=0;   //21;
 983
 984         vm_vec_scale_add(&model_pos,&mine_exit_point,&mine_exit_orient.fvec,i2f(f));
 985         vm_vec_scale_add2(&model_pos,&mine_exit_orient.uvec,i2f(u));
 986
 987         draw_polygon_model(&model_pos,&mine_exit_orient,NULL,(mine_destroyed)?destroyed_exit_modelnum:exit_modelnum,0,f1_0,NULL,NULL);
 988
 989 }
 990
 991 int exit_point_bmx,exit_point_bmy;
 992
 993 fix satellite_size = i2f(400);
 994
 995 #define SATELLITE_DIST          i2f(1024)
 996 #define SATELLITE_WIDTH         satellite_size
 997 #define SATELLITE_HEIGHT        ((satellite_size*9)/4)          //((satellite_size*5)/2)
 998
 999 void render_external_scene(fix eye_offset)
1000 {
1001
1002         Viewer_eye = Viewer->pos;
1003
1004         if (eye_offset)
1005                 vm_vec_scale_add2(&Viewer_eye,&Viewer->orient.rvec,eye_offset);
1006
1007         g3_set_view_matrix(&Viewer->pos,&Viewer->orient,Render_zoom);
1008
1009         //g3_draw_horizon(BM_XRGB(0,0,0),BM_XRGB(16,16,16));            //,-1);
1010         gr_clear_canvas(BM_XRGB(0,0,0));
1011
1012         g3_start_instance_matrix(&vmd_zero_vector,&surface_orient);
1013         draw_stars();
1014         g3_done_instance();
1015
1016         {       //draw satellite
1017
1018                 vms_vector delta;
1019                 g3s_point p,top_pnt;
1020
1021                 g3_rotate_point(&p,&satellite_pos);
1022                 g3_rotate_delta_vec(&delta,&satellite_upvec);
1023
1024                 g3_add_delta_vec(&top_pnt,&p,&delta);
1025
1026                 if (! (p.p3_codes & CC_BEHIND)) {
1027                         int save_im = Interpolation_method;
1028                         //p.p3_flags &= ~PF_PROJECTED;
1029                         //g3_project_point(&p);
1030                         if (! (p.p3_flags & PF_OVERFLOW)) {
1031                                 Interpolation_method = 0;
1032                                 //gr_bitmapm(f2i(p.p3_sx)-32,f2i(p.p3_sy)-32,satellite_bitmap);
1033                                 g3_draw_rod_tmap(satellite_bitmap,&p,SATELLITE_WIDTH,&top_pnt,SATELLITE_WIDTH,f1_0);
1034                                 Interpolation_method = save_im;
1035                         }
1036                 }
1037         }
1038
1039         #ifdef STATION_ENABLED
1040         draw_polygon_model(&station_pos,&vmd_identity_matrix,NULL,station_modelnum,0,f1_0,NULL,NULL);
1041         #endif
1042
1043         render_terrain(&mine_ground_exit_point,exit_point_bmx,exit_point_bmy);
1044
1045         draw_exit_model();
1046         if (ext_expl_playing)
1047                 draw_fireball(&external_explosion);
1048
1049         Lighting_on=0;
1050         render_object(ConsoleObject);
1051         Lighting_on=1;
1052 }
1053
1054 #define MAX_STARS 500
1055
1056 vms_vector stars[MAX_STARS];
1057
1058 void generate_starfield()
1059 {
1060         int i;
1061
1062         for (i=0;i<MAX_STARS;i++) {
1063
1064                 stars[i].x = (d_rand() - RAND_MAX/2) << 14;
1065                 stars[i].z = (d_rand() - RAND_MAX/2) << 14;
1066                 stars[i].y = (d_rand()/2) << 14;
1067
1068         }
1069 }
1070
1071 void draw_stars()
1072 {
1073         int i;
1074         int intensity=31;
1075         g3s_point p;
1076
1077         for (i=0;i<MAX_STARS;i++) {
1078
1079                 if ((i&63) == 0) {
1080                         gr_setcolor(BM_XRGB(intensity,intensity,intensity));
1081                         intensity-=3;
1082                 }
1083
1084                 //g3_rotate_point(&p,&stars[i]);
1085                 g3_rotate_delta_vec(&p.p3_vec,&stars[i]);
1086                 g3_code_point(&p);
1087
1088                 if (p.p3_codes == 0) {
1089
1090                         p.p3_flags &= ~PF_PROJECTED;
1091
1092                         g3_project_point(&p);
1093
1094                         gr_pixel(f2i(p.p3_sx),f2i(p.p3_sy));
1095                 }
1096         }
1097
1098 //@@    {
1099 //@@            vms_vector delta;
1100 //@@            g3s_point top_pnt;
1101 //@@
1102 //@@            g3_rotate_point(&p,&satellite_pos);
1103 //@@            g3_rotate_delta_vec(&delta,&satellite_upvec);
1104 //@@
1105 //@@            g3_add_delta_vec(&top_pnt,&p,&delta);
1106 //@@
1107 //@@            if (! (p.p3_codes & CC_BEHIND)) {
1108 //@@                    int save_im = Interpolation_method;
1109 //@@                    Interpolation_method = 0;
1110 //@@                    //p.p3_flags &= ~PF_PROJECTED;
1111 //@@                    g3_project_point(&p);
1112 //@@                    if (! (p.p3_flags & PF_OVERFLOW))
1113 //@@                            //gr_bitmapm(f2i(p.p3_sx)-32,f2i(p.p3_sy)-32,satellite_bitmap);
1114 //@@                            g3_draw_rod_tmap(satellite_bitmap,&p,SATELLITE_WIDTH,&top_pnt,SATELLITE_WIDTH,f1_0);
1115 //@@                    Interpolation_method = save_im;
1116 //@@            }
1117 //@@    }
1118
1119 }
1120
1121 void endlevel_render_mine(fix eye_offset)
1122 {
1123         int start_seg_num;
1124
1125         Viewer_eye = Viewer->pos;
1126
1127         if (Viewer->type == OBJ_PLAYER )
1128                 vm_vec_scale_add2(&Viewer_eye,&Viewer->orient.fvec,(Viewer->size*3)/4);
1129
1130         if (eye_offset)
1131                 vm_vec_scale_add2(&Viewer_eye,&Viewer->orient.rvec,eye_offset);
1132
1133         #ifdef EDITOR
1134         if (Function_mode==FMODE_EDITOR)
1135                 Viewer_eye = Viewer->pos;
1136         #endif
1137
1138         if (Endlevel_sequence >= EL_OUTSIDE) {
1139
1140                 start_seg_num = exit_segnum;
1141         }
1142         else {
1143                 start_seg_num = find_point_seg(&Viewer_eye,Viewer->segnum);
1144
1145                 if (start_seg_num==-1)
1146                         start_seg_num = Viewer->segnum;
1147         }
1148
1149         if (Endlevel_sequence == EL_LOOKBACK) {
1150                 vms_matrix headm,viewm;
1151                 vms_angvec angles = {0,0,0x7fff};
1152
1153                 vm_angles_2_matrix(&headm,&angles);
1154                 vm_matrix_x_matrix(&viewm,&Viewer->orient,&headm);
1155                 g3_set_view_matrix(&Viewer_eye,&viewm,Render_zoom);
1156         }
1157         else
1158                 g3_set_view_matrix(&Viewer_eye,&Viewer->orient,Render_zoom);
1159
1160         render_mine(start_seg_num,eye_offset, 0);
1161 }
1162
1163 void render_endlevel_frame(fix eye_offset)
1164 {
1165
1166         g3_start_frame();
1167
1168         if (Endlevel_sequence < EL_OUTSIDE)
1169                 endlevel_render_mine(eye_offset);
1170         else
1171                 render_external_scene(eye_offset);
1172
1173         g3_end_frame();
1174
1175 }
1176
1177
1178 ///////////////////////// copy of flythrough code for endlevel
1179
1180
1181 #define MAX_FLY_OBJECTS 2
1182
1183 flythrough_data fly_objects[MAX_FLY_OBJECTS];
1184
1185 flythrough_data *flydata;
1186
1187 int matt_find_connect_side(int seg0,int seg1);
1188
1189 void compute_segment_center(vms_vector *vp,segment *sp);
1190
1191 fixang delta_ang(fixang a,fixang b);
1192 fixang interp_angle(fixang dest,fixang src,fixang step);
1193
1194 #define DEFAULT_SPEED i2f(16)
1195
1196 #define MIN_D 0x100
1197
1198 //if speed is zero, use default speed
1199 void start_endlevel_flythrough(int n,object *obj,fix speed)
1200 {
1201         flydata = &fly_objects[n];
1202
1203         flydata->obj = obj;
1204
1205         flydata->first_time = 1;
1206
1207         flydata->speed = speed?speed:DEFAULT_SPEED;
1208
1209         flydata->offset_frac = 0;
1210 }
1211
1212 static vms_angvec *angvec_add2_scale(vms_angvec *dest,vms_vector *src,fix s)
1213 {
1214         dest->p += fixmul(src->x,s);
1215         dest->b  += fixmul(src->z,s);
1216         dest->h  += fixmul(src->y,s);
1217
1218         return dest;
1219 }
1220
1221 #define MAX_ANGSTEP     0x4000          //max turn per second
1222
1223 #define MAX_SLIDE_PER_SEGMENT 0x10000
1224
1225 void do_endlevel_flythrough(int n)
1226 {
1227         object *obj;
1228         segment *pseg;
1229         int old_player_seg;
1230
1231         flydata = &fly_objects[n];
1232         obj = flydata->obj;
1233
1234         old_player_seg = obj->segnum;
1235
1236         //move the player for this frame
1237
1238         if (!flydata->first_time) {
1239
1240                 vm_vec_scale_add2(&obj->pos,&flydata->step,FrameTime);
1241                 angvec_add2_scale(&flydata->angles,&flydata->angstep,FrameTime);
1242
1243                 vm_angles_2_matrix(&obj->orient,&flydata->angles);
1244         }
1245
1246         //check new player seg
1247
1248         update_object_seg(obj);
1249         pseg = &Segments[obj->segnum];
1250
1251         if (flydata->first_time || obj->segnum != old_player_seg) {             //moved into new seg
1252                 vms_vector curcenter,nextcenter;
1253                 fix step_size,seg_time;
1254                 short entry_side,exit_side = -1;//what sides we entry and leave through
1255                 vms_vector dest_point;          //where we are heading (center of exit_side)
1256                 vms_angvec dest_angles;         //where we want to be pointing
1257                 vms_matrix dest_orient;
1258                 int up_side=0;
1259
1260                 entry_side=0;
1261
1262                 //find new exit side
1263
1264                 if (!flydata->first_time) {
1265
1266                         entry_side = matt_find_connect_side(obj->segnum,old_player_seg);
1267                         exit_side = Side_opposite[entry_side];
1268                 }
1269
1270                 if (flydata->first_time || entry_side==-1 || pseg->children[exit_side]==-1)
1271                         exit_side = find_exit_side(obj);
1272
1273                 {                                                                               //find closest side to align to
1274                         fix d,largest_d=-f1_0;
1275                         int i;
1276
1277                         for (i=0;i<6;i++) {
1278                                 #ifdef COMPACT_SEGS
1279                                 vms_vector v1;
1280                                 get_side_normal(pseg, i, 0, &v1 );
1281                                 d = vm_vec_dot(&v1,&flydata->obj->orient.uvec);
1282                                 #else
1283                                 d = vm_vec_dot(&pseg->sides[i].normals[0],&flydata->obj->orient.uvec);
1284                                 #endif
1285                                 if (d > largest_d) {largest_d = d; up_side=i;}
1286                         }
1287
1288                 }
1289
1290                 //update target point & angles
1291
1292                 compute_center_point_on_side(&dest_point,pseg,exit_side);
1293
1294                 //update target point and movement points
1295
1296                 //offset object sideways
1297                 if (flydata->offset_frac) {
1298                         int s0=-1,s1=0,i;
1299                         vms_vector s0p,s1p;
1300                         fix dist;
1301
1302                         for (i=0;i<6;i++)
1303                                 if (i!=entry_side && i!=exit_side && i!=up_side && i!=Side_opposite[up_side])
1304                                  {
1305                                         if (s0==-1)
1306                                                 s0 = i;
1307                                         else
1308                                                 s1 = i;
1309                                  }
1310
1311                         compute_center_point_on_side(&s0p,pseg,s0);
1312                         compute_center_point_on_side(&s1p,pseg,s1);
1313                         dist = fixmul(vm_vec_dist(&s0p,&s1p),flydata->offset_frac);
1314
1315                         if (dist-flydata->offset_dist > MAX_SLIDE_PER_SEGMENT)
1316                                 dist = flydata->offset_dist + MAX_SLIDE_PER_SEGMENT;
1317
1318                         flydata->offset_dist = dist;
1319
1320                         vm_vec_scale_add2(&dest_point,&obj->orient.rvec,dist);
1321
1322                 }
1323
1324                 vm_vec_sub(&flydata->step,&dest_point,&obj->pos);
1325                 step_size = vm_vec_normalize_quick(&flydata->step);
1326                 vm_vec_scale(&flydata->step,flydata->speed);
1327
1328                 compute_segment_center(&curcenter,pseg);
1329                 compute_segment_center(&nextcenter,&Segments[pseg->children[exit_side]]);
1330                 vm_vec_sub(&flydata->headvec,&nextcenter,&curcenter);
1331
1332                 #ifdef COMPACT_SEGS
1333                 {
1334                         vms_vector _v1;
1335                         get_side_normal(pseg, up_side, 0, &_v1 );
1336                         vm_vector_2_matrix(&dest_orient,&flydata->headvec,&_v1,NULL);
1337                 }
1338                 #else
1339                 vm_vector_2_matrix(&dest_orient,&flydata->headvec,&pseg->sides[up_side].normals[0],NULL);
1340                 #endif
1341                 vm_extract_angles_matrix(&dest_angles,&dest_orient);
1342
1343                 if (flydata->first_time)
1344                         vm_extract_angles_matrix(&flydata->angles,&obj->orient);
1345
1346                 seg_time = fixdiv(step_size,flydata->speed);    //how long through seg
1347
1348                 if (seg_time) {
1349                         flydata->angstep.x = max(-MAX_ANGSTEP,min(MAX_ANGSTEP,fixdiv(delta_ang(flydata->angles.p,dest_angles.p),seg_time)));
1350                         flydata->angstep.z = max(-MAX_ANGSTEP,min(MAX_ANGSTEP,fixdiv(delta_ang(flydata->angles.b,dest_angles.b),seg_time)));
1351                         flydata->angstep.y = max(-MAX_ANGSTEP,min(MAX_ANGSTEP,fixdiv(delta_ang(flydata->angles.h,dest_angles.h),seg_time)));
1352
1353                 }
1354                 else {
1355                         flydata->angles = dest_angles;
1356                         flydata->angstep.x = flydata->angstep.y = flydata->angstep.z = 0;
1357                 }
1358         }
1359
1360         flydata->first_time=0;
1361 }
1362
1363 #define JOY_NULL 15
1364 #define ROT_SPEED 8             //rate of rotation while key held down
1365 #define VEL_SPEED (15)  //rate of acceleration while key held down
1366
1367 extern short old_joy_x,old_joy_y;       //position last time around
1368
1369 #include "key.h"
1370 #include "joy.h"
1371
1372 #ifdef SLEW_ON          //this is a special routine for slewing around external scene
1373 int _do_slew_movement(object *obj, int check_keys, int check_joy )
1374 {
1375         int moved = 0;
1376         vms_vector svel, movement;                              //scaled velocity (per this frame)
1377         vms_matrix rotmat,new_pm;
1378         int joy_x,joy_y,btns;
1379         int joyx_moved,joyy_moved;
1380         vms_angvec rotang;
1381
1382         if (keyd_pressed[KEY_PAD5])
1383                 vm_vec_zero(&obj->phys_info.velocity);
1384
1385         if (check_keys) {
1386                 obj->phys_info.velocity.x += VEL_SPEED * (key_down_time(KEY_PAD9) - key_down_time(KEY_PAD7));
1387                 obj->phys_info.velocity.y += VEL_SPEED * (key_down_time(KEY_PADMINUS) - key_down_time(KEY_PADPLUS));
1388                 obj->phys_info.velocity.z += VEL_SPEED * (key_down_time(KEY_PAD8) - key_down_time(KEY_PAD2));
1389
1390                 rotang.pitch =  (key_down_time(KEY_LBRACKET) - key_down_time(KEY_RBRACKET))/ROT_SPEED;
1391                 rotang.bank  = (key_down_time(KEY_PAD1) - key_down_time(KEY_PAD3))/ROT_SPEED;
1392                 rotang.head  = (key_down_time(KEY_PAD6) - key_down_time(KEY_PAD4))/ROT_SPEED;
1393         }
1394         else
1395                 rotang.pitch = rotang.bank  = rotang.head  = 0;
1396
1397         //check for joystick movement
1398
1399         if (check_joy && joy_present)   {
1400                 joy_get_pos(&joy_x,&joy_y);
1401                 btns=joy_get_btns();
1402
1403                 joyx_moved = (abs(joy_x - old_joy_x)>JOY_NULL);
1404                 joyy_moved = (abs(joy_y - old_joy_y)>JOY_NULL);
1405
1406                 if (abs(joy_x) < JOY_NULL) joy_x = 0;
1407                 if (abs(joy_y) < JOY_NULL) joy_y = 0;
1408
1409                 if (btns)
1410                         if (!rotang.pitch) rotang.pitch = fixmul(-joy_y * 512,FrameTime); else;
1411                 else
1412                         if (joyy_moved) obj->phys_info.velocity.z = -joy_y * 8192;
1413
1414                 if (!rotang.head) rotang.head = fixmul(joy_x * 512,FrameTime);
1415
1416                 if (joyx_moved) old_joy_x = joy_x;
1417                 if (joyy_moved) old_joy_y = joy_y;
1418         }
1419
1420         moved = rotang.pitch | rotang.bank | rotang.head;
1421
1422         vm_angles_2_matrix(&rotmat,&rotang);
1423         vm_matrix_x_matrix(&new_pm,&obj->orient,&rotmat);
1424         obj->orient = new_pm;
1425         vm_transpose_matrix(&new_pm);           //make those columns rows
1426
1427         moved |= obj->phys_info.velocity.x | obj->phys_info.velocity.y | obj->phys_info.velocity.z;
1428
1429         svel = obj->phys_info.velocity;
1430         vm_vec_scale(&svel,FrameTime);          //movement in this frame
1431         vm_vec_rotate(&movement,&svel,&new_pm);
1432
1433         vm_vec_add2(&obj->pos,&movement);
1434
1435         moved |= (movement.x || movement.y || movement.z);
1436
1437         return moved;
1438 }
1439 #endif
1440
1441 #define LINE_LEN        80
1442 #define NUM_VARS        8
1443
1444 #define STATION_DIST    i2f(1024)
1445
1446 int convert_ext( char *dest, char *ext )
1447 {
1448         char *t;
1449
1450         t = strchr(dest,'.');
1451
1452         if (t && (t-dest <= 8)) {
1453                 t[1] = ext[0];
1454                 t[2] = ext[1];
1455                 t[3] = ext[2];
1456                 return 1;
1457         }
1458         else
1459                 return 0;
1460 }
1461
1462 //called for each level to load & setup the exit sequence
1463 void load_endlevel_data(int level_num)
1464 {
1465         char filename[13];
1466         char line[LINE_LEN],*p;
1467         CFILE *ifile;
1468         int var,segnum,sidenum;
1469         int exit_side=0, i;
1470         int have_binary = 0;
1471
1472         endlevel_data_loaded = 0;               //not loaded yet
1473
1474 try_again:
1475         ;
1476
1477         if (level_num<0)                //secret level
1478                 strcpy(filename,Secret_level_names[-level_num-1]);
1479         else                                    //normal level
1480                 strcpy(filename,Level_names[level_num-1]);
1481
1482         if (!convert_ext(filename,"END"))
1483                 Error("Error converting filename <%s> for endlevel data\n",filename);
1484
1485         ifile = cfopen(filename,"rb");
1486
1487         if (!ifile) {
1488
1489                 convert_ext(filename,"txb");
1490
1491                 ifile = cfopen(filename,"rb");
1492
1493                 if (!ifile) {
1494                         if (level_num==1) {
1495                                 con_printf(CON_DEBUG, "Cannot load file text of binary version of <%s>\n",filename);
1496                                 endlevel_data_loaded = 0; // won't be able to play endlevel sequence
1497                                 return;
1498                         }
1499                         else {
1500                                 level_num = 1;
1501                                 goto try_again;
1502                         }
1503                 }
1504
1505                 have_binary = 1;
1506         }
1507
1508         //ok...this parser is pretty simple.  It ignores comments, but
1509         //everything else must be in the right place
1510
1511         var = 0;
1512
1513         while (cfgets(line,LINE_LEN,ifile)) {
1514
1515                 if (have_binary) {
1516                         for (i = 0; i < strlen(line); i++) {
1517                                 encode_rotate_left(&(line[i]));
1518                                 line[i] = line[i] ^ BITMAP_TBL_XOR;
1519                                 encode_rotate_left(&(line[i]));
1520                         }
1521                         p = line;
1522                 }
1523
1524                 if ((p=strchr(line,';'))!=NULL)
1525                         *p = 0;         //cut off comment
1526
1527                 for (p=line+strlen(line);p>line && isspace(*p);*p--=0);
1528                 for (p=line;isspace(*p);p++);
1529
1530                 if (!*p)                //empty line
1531                         continue;
1532
1533                 switch (var) {
1534
1535                         case 0: {                                               //ground terrain
1536                                 int iff_error;
1537                                 ubyte pal[768];
1538
1539                                 if (terrain_bm_instance.bm_data)
1540                                         d_free(terrain_bm_instance.bm_data);
1541
1542                                 Assert(terrain_bm_instance.bm_data == NULL);
1543
1544                                 iff_error = iff_read_bitmap(p,&terrain_bm_instance,BM_LINEAR,pal);
1545                                 if (iff_error != IFF_NO_ERROR) {
1546                                         Warning("Can't load exit terrain from file %s: IFF error: %s",
1547                                                 p, iff_errormsg(iff_error));
1548                                         endlevel_data_loaded = 0; // won't be able to play endlevel sequence
1549                                         return;
1550                                 }
1551
1552                                 terrain_bitmap = &terrain_bm_instance;
1553
1554                                 gr_remap_bitmap_good( terrain_bitmap, pal, iff_transparent_color, -1);
1555
1556                                 break;
1557                         }
1558
1559                         case 1:                                                 //height map
1560
1561                                 load_terrain(p);
1562                                 break;
1563
1564
1565                         case 2:
1566
1567                                 sscanf(p,"%d,%d",&exit_point_bmx,&exit_point_bmy);
1568                                 break;
1569
1570                         case 3:                                                 //exit heading
1571
1572                                 exit_angles.h = i2f(atoi(p))/360;
1573                                 break;
1574
1575                         case 4: {                                               //planet bitmap
1576                                 int iff_error;
1577                                 ubyte pal[768];
1578
1579                                 if (satellite_bm_instance.bm_data)
1580                                         d_free(satellite_bm_instance.bm_data);
1581
1582                                 iff_error = iff_read_bitmap(p,&satellite_bm_instance,BM_LINEAR,pal);
1583                                 if (iff_error != IFF_NO_ERROR) {
1584                                         Warning("Can't load exit satellite from file %s: IFF error: %s",
1585                                                 p, iff_errormsg(iff_error));
1586                                         endlevel_data_loaded = 0; // won't be able to play endlevel sequence
1587                                         return;
1588                                 }
1589
1590                                 satellite_bitmap = &satellite_bm_instance;
1591                                 gr_remap_bitmap_good( satellite_bitmap, pal, iff_transparent_color, -1);
1592
1593                                 break;
1594                         }
1595
1596                         case 5:                                                 //earth pos
1597                         case 7: {                                               //station pos
1598                                 vms_matrix tm;
1599                                 vms_angvec ta;
1600                                 int pitch,head;
1601
1602                                 sscanf(p,"%d,%d",&head,&pitch);
1603
1604                                 ta.h = i2f(head)/360;
1605                                 ta.p = -i2f(pitch)/360;
1606                                 ta.b = 0;
1607
1608                                 vm_angles_2_matrix(&tm,&ta);
1609
1610                                 if (var==5)
1611                                         satellite_pos = tm.fvec;
1612                                         //vm_vec_copy_scale(&satellite_pos,&tm.fvec,SATELLITE_DIST);
1613                                 else
1614                                         station_pos = tm.fvec;
1615
1616                                 break;
1617                         }
1618
1619                         case 6:                                         //planet size
1620                                 satellite_size = i2f(atoi(p));
1621                                 break;
1622                 }
1623
1624                 var++;
1625
1626         }
1627
1628         Assert(var == NUM_VARS);
1629
1630
1631         // OK, now the data is loaded.  Initialize everything
1632
1633         //find the exit sequence by searching all segments for a side with
1634         //children == -2
1635
1636         for (segnum=0,exit_segnum=-1;exit_segnum==-1 && segnum<=Highest_segment_index;segnum++)
1637                 for (sidenum=0;sidenum<6;sidenum++)
1638                         if (Segments[segnum].children[sidenum] == -2) {
1639                                 exit_segnum = segnum;
1640                                 exit_side = sidenum;
1641                                 break;
1642                         }
1643
1644         Assert(exit_segnum!=-1);
1645
1646         compute_segment_center(&mine_exit_point,&Segments[exit_segnum]);
1647         extract_orient_from_segment(&mine_exit_orient,&Segments[exit_segnum]);
1648         compute_center_point_on_side(&mine_side_exit_point,&Segments[exit_segnum],exit_side);
1649
1650         vm_vec_scale_add(&mine_ground_exit_point,&mine_exit_point,&mine_exit_orient.uvec,-i2f(20));
1651
1652         //compute orientation of surface
1653         {
1654                 vms_vector tv;
1655                 vms_matrix exit_orient,tm;
1656
1657                 vm_angles_2_matrix(&exit_orient,&exit_angles);
1658                 vm_transpose_matrix(&exit_orient);
1659                 vm_matrix_x_matrix(&surface_orient,&mine_exit_orient,&exit_orient);
1660
1661                 vm_copy_transpose_matrix(&tm,&surface_orient);
1662                 vm_vec_rotate(&tv,&station_pos,&tm);
1663                 vm_vec_scale_add(&station_pos,&mine_exit_point,&tv,STATION_DIST);
1664
1665                 vm_vec_rotate(&tv,&satellite_pos,&tm);
1666                 vm_vec_scale_add(&satellite_pos,&mine_exit_point,&tv,SATELLITE_DIST);
1667
1668                 vm_vector_2_matrix(&tm,&tv,&surface_orient.uvec,NULL);
1669                 vm_vec_copy_scale(&satellite_upvec,&tm.uvec,SATELLITE_HEIGHT);
1670
1671
1672         }
1673
1674         cfclose(ifile);
1675
1676         endlevel_data_loaded = 1;
1677
1678 }