main/endlevel.c

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