src/starfield/starfield.cpp

   1 /*
   2  * Copyright (C) Volition, Inc. 1999.  All rights reserved.
   3  *
   4  * All source code herein is the property of Volition, Inc. You may not sell
   5  * or otherwise commercially exploit the source or things you created based on
   6  * the source.
   7  */
   8
   9 /*
  10  * $Logfile: /Freespace2/code/Starfield/StarField.cpp $
  11  * $Revision$
  12  * $Date$
  13  * $Author$
  14  *
  15  * Code to handle and draw starfields, background space image bitmaps, floating
  16  * debris, etc.
  17  *
  18  * $Log$
  19  * Revision 1.10  2005/10/01 22:04:58  taylor
  20  * fix FS1 (de)briefing voices, the directory names are different in FS1
  21  * hard code the table values so that the fs1.vp file isn't needed
  22  * hard code a mission fix for sm2-08a since a have no idea how to fix it otherwise
  23  * generally cleanup some FS1 code
  24  * fix volume sliders in the options screen that never went all the way up
  25  *
  26  * Revision 1.9  2004/09/20 01:31:45  theoddone33
  27  * GCC 3.4 fixes.
  28  *
  29  * Revision 1.8  2004/07/04 11:40:26  taylor
  30  * only load those background bitmaps that we are going to use this mission
  31  *
  32  * Revision 1.7  2003/05/25 02:30:44  taylor
  33  * Freespace 1 support
  34  *
  35  * Revision 1.6  2002/06/22 23:57:39  relnev
  36  * remove writable strings.
  37  *
  38  * fix compile for intel compiler.
  39  *
  40  * Revision 1.5  2002/06/17 06:33:11  relnev
  41  * ryan's struct patch for gcc 2.95
  42  *
  43  * Revision 1.4  2002/06/09 04:41:27  relnev
  44  * added copyright header
  45  *
  46  * Revision 1.3  2002/06/02 04:26:34  relnev
  47  * warning cleanup
  48  *
  49  * Revision 1.2  2002/05/07 03:16:52  theoddone33
  50  * The Great Newline Fix
  51  *
  52  * Revision 1.1.1.1  2002/05/03 03:28:10  root
  53  * Initial import.
  54  *
  55  *
  56  * 34    9/07/99 4:01p Dave
  57  * Fixed up a string.tbl paroblem (self destruct message). Make sure IPX
  58  * does everything properly (setting up address when binding). Remove
  59  * black rectangle background from UI_INPUTBOX.
  60  *
  61  * 33    9/01/99 10:14a Dave
  62  * Pirate bob.
  63  *
  64  * 32    8/30/99 5:01p Dave
  65  * Made d3d do less state changing in the nebula. Use new chat server for
  66  * PXO.
  67  *
  68  * 31    8/19/99 10:59a Dave
  69  * Packet loss detection.
  70  *
  71  * 30    7/27/99 3:52p Dave
  72  * Make star drawing a bit more robust to help lame D3D cards.
  73  *
  74  * 29    7/21/99 8:10p Dave
  75  * First run of supernova effect.
  76  *
  77  * 28    7/13/99 2:01p Dave
  78  * Don't draw background bitmaps in the nebula.
  79  *
  80  * 27    6/08/99 2:34p Jasenw
  81  * Made perspective bitmaps render in Fred.
  82  *
  83  * 26    6/04/99 1:18p Dave
  84  * Fixed briefing model rendering problems. Made show background option in
  85  * fred toggle nebula rendering.
  86  *
  87  * 25    6/03/99 6:37p Dave
  88  * More TNT fun. Made perspective bitmaps more flexible.
  89  *
  90  * 24    5/28/99 1:45p Dave
  91  * Fixed up perspective bitmap drawing.
  92  *
  93  * 23    5/20/99 7:00p Dave
  94  * Added alternate type names for ships. Changed swarm missile table
  95  * entries.
  96  *
  97  * 22    5/11/99 10:03a Dave
  98  * Put a bunch of stuff into tables.
  99  *
 100  * 21    5/11/99 9:10a Dave
 101  * Move default sun position.
 102  *
 103  * 20    5/09/99 6:00p Dave
 104  * Lots of cool new effects. E3 build tweaks.
 105  *
 106  * 19    4/26/99 8:49p Dave
 107  * Made all pof based nebula stuff full customizable through fred.
 108  *
 109  * 18    4/25/99 7:43p Dave
 110  * Misc small bug fixes. Made sun draw properly.
 111  *
 112  * 17    4/23/99 5:53p Dave
 113  * Started putting in new pof nebula support into Fred.
 114  *
 115  * 16    4/07/99 6:22p Dave
 116  * Fred and Freespace support for multiple background bitmaps and suns.
 117  * Fixed link errors on all subprojects. Moved encrypt_init() to
 118  * cfile_init() and lcl_init(), since its safe to call twice.
 119  *
 120  * 15    3/31/99 8:24p Dave
 121  * Beefed up all kinds of stuff, incluging beam weapons, nebula effects
 122  * and background nebulae. Added per-ship non-dimming pixel colors.
 123  *
 124  * 14    3/20/99 5:09p Dave
 125  * Fixed release build fred warnings and unhandled exception.
 126  *
 127  * 13    3/20/99 3:46p Dave
 128  * Added support for model-based background nebulae. Added 3 new
 129  * sexpressions.
 130  *
 131  * 12    3/20/99 2:04p Dave
 132  * Removed unnecessary planet rendering.
 133  *
 134  * 11    3/19/99 9:51a Dave
 135  * Checkin to repair massive source safe crash. Also added support for
 136  * pof-style nebulae, and some new weapons code.
 137  *
 138  * 12    3/15/99 6:45p Daveb
 139  * Put in rough nebula bitmap support.
 140  *
 141  * 11    3/11/99 5:53p Dave
 142  * More network optimization. Spliced in Dell OEM planet bitmap crap.
 143  *
 144  * 10    2/03/99 11:44a Dave
 145  * Fixed d3d transparent textures.
 146  *
 147  * 9     12/09/98 7:34p Dave
 148  * Cleanup up nebula effect. Tweaked many values.
 149  *
 150  * 8     12/01/98 10:32a Johnson
 151  * Fixed direct3d font problems. Fixed sun bitmap problem. Fixed direct3d
 152  * starfield problem.
 153  *
 154  * 7     12/01/98 8:06a Dave
 155  * Temporary checkin to fix some texture transparency problems in d3d.
 156  *
 157  * 6     11/14/98 5:33p Dave
 158  * Lots of nebula work. Put in ship contrails.
 159  *
 160  * 5     11/05/98 5:55p Dave
 161  * Big pass at reducing #includes
 162  *
 163  * 4     10/13/98 9:29a Dave
 164  * Started neatening up freespace.h. Many variables renamed and
 165  * reorganized. Added AlphaColors.[h,cpp]
 166  *
 167  * 3     10/07/98 11:16a Dave
 168  * Remove warning.
 169  *
 170  * 2     10/07/98 10:54a Dave
 171  * Initial checkin.
 172  *
 173  * 1     10/07/98 10:51a Dave
 174  *
 175  * 106   5/23/98 4:14p John
 176  * Added code to preload textures to video card for AGP.   Added in code
 177  * to page in some bitmaps that weren't getting paged in at level start.
 178  *
 179  * 105   5/13/98 2:53p John
 180  * Made subspace effect work under software.  Had to add new inner loop to
 181  * tmapper.  Added glows to end of subspace effect.  Made subspace effect
 182  * levels use gamepalette-subspace palette.
 183  *
 184  * 104   5/13/98 10:28a John
 185  * made subpsace forward sliding 40% faster.
 186  *
 187  * 103   5/10/98 4:18p John
 188  * Reversed the subspace effect direction
 189  *
 190  * 102   5/08/98 8:38p John
 191  * Subspace tweaks.  Made two layers rotate independentyl.
 192  *
 193  * 101   5/08/98 1:32p John
 194  * Added code for using two layered subspace effects.
 195  *
 196  * 100   5/06/98 5:30p John
 197  * Removed unused cfilearchiver.  Removed/replaced some unused/little used
 198  * graphics functions, namely gradient_h and _v and pixel_sp.   Put in new
 199  * DirectX header files and libs that fixed the Direct3D alpha blending
 200  * problems.
 201  *
 202  * 99    4/22/98 4:09p John
 203  * String externalization
 204  *
 205  * 98    4/22/98 3:28p John
 206  * Fixed XSTR bug
 207  *
 208  * 97    4/13/98 4:54p John
 209  * Made uv rotate independently on subspace effect. Put in DCF function
 210  * for setting subspace speeds.
 211  *
 212  * 96    4/12/98 5:55p John
 213  * Made models work with subspace.  Made subspace rotate also.
 214  *
 215  * 95    4/11/98 6:53p John
 216  * Added first rev of subspace effect.
 217  *
 218  * 94    4/08/98 11:31a Dave
 219  * AL: Fix syntax error for non-demo
 220  *
 221  * 93    4/08/98 10:46a Lawrance
 222  * #ifdef out asteroid check for demo
 223  *
 224  * 92    4/08/98 9:25a John
 225  * Made asteroid missions not show suns
 226  *
 227  * 91    4/07/98 4:17p John
 228  * Made Fred be able to move suns.  Made suns actually affect the lighting
 229  * in the game.
 230  *
 231  * 90    4/07/98 11:19a Hoffoss
 232  * Changed code to only use Sun01 for a bitmap by default, as John
 233  * requested.
 234  *
 235  * $NoKeywords: $
 236  */
 237
 238 #include "pstypes.h"
 239 #include "floating.h"
 240 #include "vecmat.h"
 241 #include "3d.h"
 242 #include "2d.h"
 243 #include "starfield.h"
 244 #include "bmpman.h"
 245 #include "key.h"
 246 #include "freespace.h"
 247 #include "timer.h"
 248 #include "nebula.h"
 249 #include "linklist.h"
 250 #include "lighting.h"
 251 #include "asteroid.h"
 252 #include "missionparse.h"
 253 #include "neb.h"
 254 #include "alphacolors.h"
 255 #include "supernova.h"
 256
 257 #define MAX_DEBRIS_VCLIPS       4
 258 #define DEBRIS_ROT_MIN                          10000
 259 #define DEBRIS_ROT_RANGE                        8
 260 #define DEBRIS_ROT_RANGE_SCALER 10000
 261 #define RND_MAX_MASK    0x3fff
 262 #define HALF_RND_MAX 0x2000
 263
 264 typedef struct debris_vclip {
 265         int     bm;
 266         int     nframes;
 267         char  name[32];
 268 } debris_vclip;
 269
 270 typedef struct {
 271         vector pos;
 272         vector last_pos;
 273         int active;
 274         int vclip;
 275         float size;
 276 } old_debris;
 277
 278 const int MAX_DEBRIS = 200;
 279 const int MAX_STARS = 2000;
 280 const float MAX_DIST = 50.0f;
 281 const float MAX_DIST_RANGE = 60.0f;
 282 const float MIN_DIST_RANGE = 14.0f;
 283 const float BASE_SIZE = 0.12f;
 284 float BASE_SIZE_NEB = 0.5f;
 285
 286 static int Subspace_model_inner = -1;
 287 static int Subspace_model_outer = -1;
 288
 289 int Num_stars = 500;
 290 fix starfield_timestamp = 0;
 291
 292 // for drawing cool stuff on the background - comes from a table
 293 starfield_bitmap Starfield_bitmaps[MAX_STARFIELD_BITMAPS];
 294 starfield_bitmap_instance Starfield_bitmap_instance[MAX_STARFIELD_BITMAPS];
 295 int Num_starfield_bitmaps = 0;
 296
 297 // sun bitmaps and sun glow bitmaps
 298 starfield_bitmap Sun_bitmaps[MAX_STARFIELD_BITMAPS];
 299 starfield_bitmap_instance Suns[MAX_STARFIELD_BITMAPS];
 300 int Num_suns = 0;
 301
 302 int last_stars_filled = 0;
 303 color star_colors[8];
 304 color star_aacolors[8];
 305
 306 typedef struct star {
 307         vector pos;
 308         vector last_star_pos;
 309 } star;
 310
 311 star Stars[MAX_STARS];
 312
 313 old_debris odebris[MAX_DEBRIS];
 314
 315 //XSTR:OFF
 316 debris_vclip debris_vclips_normal[MAX_DEBRIS_VCLIPS] = { { -1, -1, "debris01" }, { -1, -1, "debris02" }, { -1, -1, "debris03" }, { -1, -1, "debris04" } };
 317 debris_vclip debris_vclips_nebula[MAX_DEBRIS_VCLIPS] = { { -1, -1, "Neb01-64" }, { -1, -1, "Neb01-64" }, { -1, -1, "Neb01-64" }, { -1, -1, "Neb01-64" } };
 318 debris_vclip *debris_vclips = debris_vclips_normal;
 319 //XSTR:ON
 320
 321 int stars_debris_loaded = 0;
 322
 323 // background data
 324 int Stars_background_inited = 0;                        // if we're inited
 325 int Nmodel_num = -1;                                                    // model num
 326 int Nmodel_bitmap = -1;                                         // model texture
 327
 328 // given a starfield_bitmap_instance, return a pointer to its parent, for suns
 329 starfield_bitmap *stars_lookup_sun(starfield_bitmap_instance *s)
 330 {
 331         int idx;
 332
 333         // sanity
 334         if(s == NULL){
 335                 return NULL;
 336         }
 337
 338         // lookup
 339         for(idx=0; idx<MAX_STARFIELD_BITMAPS; idx++){
 340                 if(!SDL_strcasecmp(Sun_bitmaps[idx].filename, s->filename)){
 341                         return &Sun_bitmaps[idx];
 342                 }
 343         }
 344
 345         // no findy
 346         return NULL;
 347 }
 348
 349 void stars_load_debris()
 350 {
 351         int i;
 352
 353         // if we're in nebula mode
 354         if(The_mission.flags & MISSION_FLAG_FULLNEB){
 355                 debris_vclips = debris_vclips_nebula;
 356         } else {
 357                 debris_vclips = debris_vclips_normal;
 358         }
 359
 360         for (i=0; i<MAX_DEBRIS_VCLIPS; i++ )    {
 361                 debris_vclips[i].bm = bm_load_animation( debris_vclips[i].name, &debris_vclips[i].nframes, NULL, 1 );
 362                 if ( debris_vclips[i].bm < 0 ) {
 363                         // try loading it as a single bitmap
 364                         debris_vclips[i].bm = bm_load(debris_vclips[i].name);
 365                         debris_vclips[i].nframes = 1;
 366
 367                         if(debris_vclips[i].bm <= 0){
 368                                 Error( LOCATION, "Couldn't load animation/bitmap '%s'\n", debris_vclips[i].name );
 369                         }
 370                 }
 371         }
 372         stars_debris_loaded = 1;
 373 }
 374
 375 // call on game startup
 376 void stars_init()
 377 {
 378 #ifndef MAKE_FS1
 379         starfield_bitmap *bm;
 380         int count, idx;
 381         char filename[MAX_FILENAME_LEN+1] = "";
 382         char glow_filename[MAX_FILENAME_LEN+1] = "";
 383         float r, g, b, i;
 384
 385         try {
 386                 // parse stars.tbl
 387                 read_file_text("stars.tbl");
 388                 reset_parse();
 389
 390                 // make all bitmaps invalid
 391                 for(idx=0; idx<MAX_STARFIELD_BITMAPS; idx++){
 392                         Starfield_bitmaps[idx].bitmap = -1;
 393                         Starfield_bitmaps[idx].glow_bitmap = -1;
 394                         SDL_strlcpy(Starfield_bitmaps[idx].filename, "", SDL_arraysize(Starfield_bitmaps[0].filename));
 395                         SDL_strlcpy(Starfield_bitmaps[idx].glow_filename, "", SDL_arraysize(Starfield_bitmaps[0].glow_filename));
 396
 397                         Sun_bitmaps[idx].bitmap = -1;
 398                         Sun_bitmaps[idx].glow_bitmap = -1;
 399                         SDL_strlcpy(Sun_bitmaps[idx].filename, "", SDL_arraysize(Sun_bitmaps[0].filename));
 400                         SDL_strlcpy(Sun_bitmaps[idx].glow_filename, "", SDL_arraysize(Sun_bitmaps[0].glow_filename));
 401                 }
 402
 403                 // starfield bitmaps
 404                 count = 0;
 405                 while(!optional_string("#end")){
 406                         // intensity alpha bitmap
 407                         if(optional_string("$Bitmap:")){
 408                                 stuff_string(filename, F_NAME, NULL);
 409                                 if(count < MAX_STARFIELD_BITMAPS){
 410                                         bm = &Starfield_bitmaps[count++];
 411                                         SDL_strlcpy(bm->filename, filename, SDL_arraysize(bm->filename));
 412                                         bm->xparent = 0;
 413                                         bm->bitmap = bm_load(bm->filename);
 414                                         SDL_assert(bm->bitmap != -1);
 415
 416                                         // if fred is running we should lock the bitmap now
 417                                         if(Fred_running && (bm->bitmap >= 0)){
 418                                                 bm_lock(bm->bitmap, 8, BMP_TEX_OTHER);
 419                                                 bm_unlock(bm->bitmap);
 420                                         }
 421                                 }
 422                         }
 423                         // green xparency bitmap
 424                         else if(optional_string("$BitmapX:")){
 425                                 stuff_string(filename, F_NAME, NULL);
 426                                 if(count < MAX_STARFIELD_BITMAPS){
 427                                         bm = &Starfield_bitmaps[count++];
 428                                         SDL_strlcpy(bm->filename, filename, SDL_arraysize(bm->filename));
 429                                         bm->xparent = 1;
 430                                         bm->bitmap = bm_load(bm->filename);
 431                                         SDL_assert(bm->bitmap != -1);
 432
 433                                         // if fred is running we should lock as a 0, 255, 0 bitmap now
 434                                         if(Fred_running && (bm->bitmap >= 0)){
 435                                                 bm_lock(bm->bitmap, 8, BMP_TEX_XPARENT);
 436                                                 bm_unlock(bm->bitmap);
 437                                         }
 438                                 }
 439                         }
 440                 }
 441
 442                 // sun bitmaps
 443                 count = 0;
 444                 while(!optional_string("#end")){
 445                         if(optional_string("$Sun:")){
 446                                 stuff_string(filename, F_NAME, NULL);
 447
 448                                 // associated glow
 449                                 required_string("$Sunglow:");
 450                                 stuff_string(glow_filename, F_NAME, NULL);
 451
 452                                 // associated lighting values
 453                                 required_string("$SunRGBI:");
 454                                 stuff_float(&r);
 455                                 stuff_float(&g);
 456                                 stuff_float(&b);
 457                                 stuff_float(&i);
 458
 459                                 if(count < MAX_STARFIELD_BITMAPS){
 460                                         bm = &Sun_bitmaps[count++];
 461                                         SDL_strlcpy(bm->filename, filename, SDL_arraysize(bm->filename));
 462                                         SDL_strlcpy(bm->glow_filename, glow_filename, SDL_arraysize(bm->glow_filename));
 463                                         bm->xparent = 1;
 464                                         bm->bitmap = bm_load(bm->filename);
 465                                         bm->glow_bitmap = bm_load(bm->glow_filename);
 466                                         SDL_assert(bm->bitmap != -1);
 467                                         SDL_assert(bm->glow_bitmap != -1);
 468                                         bm->r = r;
 469                                         bm->g = g;
 470                                         bm->b = b;
 471                                         bm->i = i;
 472
 473                                         // if fred is running we should lock the bitmap now
 474                                         if(Fred_running){
 475                                                 if(bm->bitmap >= 0){
 476                                                         bm_lock(bm->bitmap, 8, BMP_TEX_OTHER);
 477                                                         bm_unlock(bm->bitmap);
 478                                                 }
 479                                                 if(bm->glow_bitmap >= 0){
 480                                                         bm_lock(bm->glow_bitmap, 8, BMP_TEX_OTHER);
 481                                                         bm_unlock(bm->glow_bitmap);
 482                                                 }
 483                                         }
 484                                 }
 485                         }
 486                 }
 487
 488                 // normal debris pieces
 489                 count = 0;
 490                 while(!optional_string("#end")){
 491                         required_string("$Debris:");
 492                         stuff_string(filename, F_NAME, NULL);
 493
 494                         if(count < MAX_DEBRIS_VCLIPS){
 495                                 SDL_strlcpy(debris_vclips_normal[count++].name, filename, SDL_arraysize(debris_vclips_normal[0].name));
 496                         }
 497                 }
 498                 SDL_assert(count == 4);
 499
 500                 // nebula debris pieces
 501                 count = 0;
 502                 while(!optional_string("#end")){
 503                         required_string("$DebrisNeb:");
 504                         stuff_string(filename, F_NAME, NULL);
 505
 506                         if(count < MAX_DEBRIS_VCLIPS){
 507                                 SDL_strlcpy(debris_vclips_nebula[count++].name, filename, SDL_arraysize(debris_vclips_nebula[0].name));
 508                         }
 509                 }
 510
 511                 SDL_assert(count == 4);
 512         } catch (parse_error_t rval) {
 513                 Error(LOCATION, "Unable to parse stars.tbl!  Code = %i.\n", (int)rval);
 514         }
 515 #else
 516         // hard-coded for FS1
 517         starfield_bitmap *bm;
 518         int count, idx;
 519
 520         // make all bitmaps invalid
 521         for (idx=0; idx<MAX_STARFIELD_BITMAPS; idx++) {
 522                 Starfield_bitmaps[idx].bitmap = -1;
 523                 Starfield_bitmaps[idx].glow_bitmap = -1;
 524                 SDL_strlcpy(Starfield_bitmaps[idx].filename, "", SDL_arraysize(Starfield_bitmaps[0].filename));
 525                 SDL_strlcpy(Starfield_bitmaps[idx].glow_filename, "", SDL_arraysize(Starfield_bitmaps[0].glow_filename));
 526
 527                 Sun_bitmaps[idx].bitmap = -1;
 528                 Sun_bitmaps[idx].glow_bitmap = -1;
 529                 SDL_strlcpy(Sun_bitmaps[idx].filename, "", SDL_arraysize(Sun_bitmaps[0].filename));
 530                 SDL_strlcpy(Sun_bitmaps[idx].glow_filename, "", SDL_arraysize(Sun_bitmaps[0].glow_filename));
 531         }
 532
 533         // the sun
 534         count = 0;
 535         bm = &Sun_bitmaps[count++];
 536
 537         SDL_strlcpy(bm->filename, "Sun01", SDL_arraysize(bm->filename));
 538         SDL_strlcpy(bm->glow_filename, "Sunglow01", SDL_arraysize(bm->glow_filename));
 539         bm->xparent = 1;
 540         bm->bitmap = bm_load(bm->filename);
 541         bm->glow_bitmap = bm_load(bm->glow_filename);
 542         SDL_assert(bm->bitmap != -1);
 543         SDL_assert(bm->glow_bitmap != -1);
 544         bm->r = 1.0f;
 545         bm->g = 1.0f;
 546         bm->b = 1.0f;
 547         bm->i = 1.0f;
 548
 549         // we use the default debris vclips so no need to specify those again here
 550 #endif
 551 }
 552
 553 // call this in game_post_level_init() so we know whether we're running in full nebula mode or not
 554 void stars_level_init()
 555 {
 556         int i;
 557         vector v;
 558         float dist, dist_max;
 559
 560         // reset to -1 so we reload it each mission (if we need to)
 561         Nmodel_num = -1;
 562         if(Nmodel_bitmap != -1){
 563                 bm_unload(Nmodel_bitmap);
 564                 Nmodel_bitmap = -1;
 565         }
 566
 567         // if (!stars_debris_loaded){
 568                 stars_load_debris();
 569         // }
 570
 571 // following code randomly distributes star points within a sphere volume, which
 572 // avoids there being denser areas along the edges and in corners that we had in the
 573 // old rectangular distribution scheme.
 574         dist_max = (float) (HALF_RND_MAX * HALF_RND_MAX);
 575         for (i=0; i<MAX_STARS; i++) {
 576                 dist = dist_max;
 577                 while (dist >= dist_max) {
 578                         v.xyz.x = (float) ((myrand() & RND_MAX_MASK) - HALF_RND_MAX);
 579                         v.xyz.y = (float) ((myrand() & RND_MAX_MASK) - HALF_RND_MAX);
 580                         v.xyz.z = (float) ((myrand() & RND_MAX_MASK) - HALF_RND_MAX);
 581
 582                         dist = v.xyz.x * v.xyz.x + v.xyz.y * v.xyz.y + v.xyz.z * v.xyz.z;
 583                 }
 584                 vm_vec_copy_normalize(&Stars[i].pos, &v);
 585         }
 586
 587         for (i=0; i<MAX_DEBRIS; i++) {
 588                 odebris[i].active = 0;
 589         }
 590
 591         for (i=0; i<8; i++ )    {
 592                 ubyte intensity = (ubyte)((i + 1) * 24);
 593                 gr_init_alphacolor(&star_aacolors[i], 255, 255, 255, intensity, AC_TYPE_BLEND );
 594                 gr_init_color(&star_colors[i], intensity, intensity, intensity );
 595         }
 596
 597         last_stars_filled = 0;
 598
 599 #ifndef MAKE_FS1  // some FS1 missions don't have a sun
 600         // if we have no sun instances, create one
 601         if(Num_suns <= 0){
 602                 mprintf(("Adding default sun\n"));
 603
 604                 // stuff some values
 605                 SDL_strlcpy(Suns[0].filename, Sun_bitmaps[0].filename, SDL_arraysize(Suns[0].filename));
 606                 Suns[0].scale_x = 1.0f;
 607                 Suns[0].scale_y = 1.0f;
 608                 Suns[0].div_x = 1;
 609                 Suns[0].div_y = 1;
 610                 memset(&Suns[0].ang, 0, sizeof(angles));
 611                 Suns[0].ang.h = fl_radian(60.0f);
 612
 613                 // one sun
 614                 Num_suns = 1;
 615         }
 616 #endif
 617 }
 618
 619
 620 #include "object.h"
 621 extern object * Player_obj;
 622
 623 #define STAR_AMOUNT_DEFAULT 0.75f
 624 #define STAR_DIM_DEFAULT 7800.0f
 625 #define STAR_CAP_DEFAULT 75.0f
 626 #define STAR_MAX_LENGTH_DEFAULT 0.04f           // 312
 627
 628 float Star_amount = STAR_AMOUNT_DEFAULT;
 629 float Star_dim = STAR_DIM_DEFAULT;
 630 float Star_cap = STAR_CAP_DEFAULT;
 631 float Star_max_length = STAR_MAX_LENGTH_DEFAULT;
 632
 633 #define STAR_FLAG_TAIL                  (1<<0)  // Draw a tail when moving
 634 #define STAR_FLAG_DIM                   (1<<1)  // Dim as you move
 635 #define STAR_FLAG_ANTIALIAS     (1<<2)  // Draw the star using antialiased lines
 636 #define STAR_FLAG_DEFAULT               (STAR_FLAG_TAIL | STAR_FLAG_DIM)
 637
 638 uint Star_flags = STAR_FLAG_DEFAULT;
 639
 640 //XSTR:OFF
 641 DCF(stars,"Set parameters for starfield")
 642 {
 643         if ( Dc_command )       {
 644                 dc_get_arg(ARG_STRING);
 645                 if ( !strcmp( Dc_arg, "tail" )) {
 646                         dc_get_arg(ARG_FLOAT);
 647                         if ( (Dc_arg_float < 0.0f) || (Dc_arg_float > 1.0f) )   {
 648                                 Dc_help = 1;
 649                         } else {
 650                                 Star_amount = Dc_arg_float;
 651                         }
 652                 } else if ( !strcmp( Dc_arg, "len" ))   {
 653                         dc_get_arg(ARG_FLOAT);
 654                         Star_max_length = Dc_arg_float;
 655                 } else if ( !strcmp( Dc_arg, "dim" ))   {
 656                         dc_get_arg(ARG_FLOAT);
 657                         if ( Dc_arg_float < 0.0f )      {
 658                                 Dc_help = 1;
 659                         } else {
 660                                 Star_dim = Dc_arg_float;
 661                         }
 662                 } else if ( !strcmp( Dc_arg, "flag" ))  {
 663                         dc_get_arg(ARG_STRING);
 664                         if ( !strcmp( Dc_arg, "tail" )) {
 665                                 Star_flags ^= STAR_FLAG_TAIL;
 666                         } else if ( !strcmp( Dc_arg, "dim" ))   {
 667                                 Star_flags ^= STAR_FLAG_DIM;
 668                         } else if ( !strcmp( Dc_arg, "aa" ))    {
 669                                 Star_flags ^= STAR_FLAG_ANTIALIAS;
 670                         } else {
 671                                 Dc_help = 1;
 672                         }
 673                 } else if ( !strcmp( Dc_arg, "cap" ))   {
 674                         dc_get_arg(ARG_FLOAT);
 675                         if ( (Dc_arg_float < 0.0f) || (Dc_arg_float > 255.0f) ) {
 676                                 Dc_help = 1;
 677                         } else {
 678                                 Star_cap = Dc_arg_float;
 679                         }
 680                 } else if ( !strcmp( Dc_arg, "m0" )  )  {
 681                         Star_amount = 0.0f;
 682                         Star_dim = 0.0f;
 683                         Star_cap = 0.0f;
 684                         Star_flags = 0;
 685                         Star_max_length = STAR_MAX_LENGTH_DEFAULT;
 686                 } else if ( !strcmp( Dc_arg, "m1" ) || !strcmp( Dc_arg, "default" ))    {
 687                         Star_amount = STAR_AMOUNT_DEFAULT;
 688                         Star_dim = STAR_DIM_DEFAULT;
 689                         Star_cap = STAR_CAP_DEFAULT;
 690                         Star_flags = STAR_FLAG_DEFAULT;
 691                         Star_max_length = STAR_MAX_LENGTH_DEFAULT;
 692                 } else if ( !strcmp( Dc_arg, "m2" ))    {
 693                         Star_amount = 0.75f;
 694                         Star_dim = 20.0f;
 695                         Star_cap = 75.0f;
 696                         Star_flags = STAR_FLAG_TAIL|STAR_FLAG_DIM|STAR_FLAG_ANTIALIAS;
 697                         Star_max_length = STAR_MAX_LENGTH_DEFAULT;
 698                 } else if ( !strcmp( Dc_arg, "num" ))   {
 699                         dc_get_arg(ARG_INT);
 700                         if ( (Dc_arg_int < 0) || (Dc_arg_int > MAX_STARS) )     {
 701                                 Dc_help = 1;
 702                         } else {
 703                                 Num_stars = Dc_arg_int;
 704                         }
 705                 } else {
 706                         // print usage, not stats
 707                         Dc_help = 1;
 708                 }
 709         }
 710
 711         if ( Dc_help )  {
 712                 dc_printf( "Usage: stars keyword\nWhere keyword can be in the following forms:\n" );
 713                 dc_printf( "stars default   Resets stars to all default values\n" );
 714                 dc_printf( "stars num X     Sets number of stars to X.  Between 0 and %d.\n", MAX_STARS );
 715                 dc_printf( "stars tail X    Where X is the percent of 'tail' between 0 and 1.0\n" );
 716                 dc_printf( "stars dim X     Where X is the amount stars dim between 0 and 255.0\n" );
 717                 dc_printf( "stars cap X     Where X is the cap of dimming between 0 and 255.\n" );
 718                 dc_printf( "stars len X     Where X is the cap of length.\n" );
 719                 dc_printf( "stars m0        Macro0. Old 'pixel type' crappy stars. flags=none\n" );
 720                 dc_printf( "stars m1        Macro1. (default) tail=.75, dim=20.0, cap=75.0, flags=dim,tail\n" );
 721                 dc_printf( "stars m2        Macro2. tail=.75, dim=20.0, cap=75.0, flags=dim,tail,aa\n" );
 722                 dc_printf( "stars flag X    Toggles flag X, where X is tail or dim or aa (aa=antialias)\n" );
 723                 dc_printf( "\nHINT: set cap to 0 to get dim rate and tail down, then use\n" );
 724                 dc_printf( "cap to keep the lines from going away when moving too fast.\n" );
 725                 dc_printf( "\nUse '? stars' to see current values.\n" );
 726                 Dc_status = 0;  // don't print status if help is printed.  Too messy.
 727         }
 728
 729         if ( Dc_status )        {
 730                 dc_printf( "Num_stars: %d\n", Num_stars );
 731                 dc_printf( "Tail: %.2f\n", Star_amount );
 732                 dc_printf( "Dim: %.2f\n", Star_dim );
 733                 dc_printf( "Cap: %.2f\n", Star_cap );
 734                 dc_printf( "Max length: %.2f\n", Star_max_length );
 735                 dc_printf( "Flags:\n" );
 736                 dc_printf( "  Tail: %s\n", (Star_flags&STAR_FLAG_TAIL?"On":"Off") );
 737                 dc_printf( "  Dim: %s\n", (Star_flags&STAR_FLAG_DIM?"On":"Off") );
 738                 dc_printf( "  Antialias: %s\n", (Star_flags&STAR_FLAG_ANTIALIAS?"On":"Off") );
 739                 dc_printf( "\nTHESE AREN'T SAVED TO DISK, SO IF YOU TWEAK\n" );
 740                 dc_printf( "THESE AND LIKE THEM, WRITE THEM DOWN!!\n" );
 741         }
 742 }
 743 //XSTR:ON
 744
 745 int reload_old_debris = 1;              // If set to one, then reload all the last_pos of the debris
 746
 747 // Call this if camera "cuts" or moves long distances
 748 // so blur effect doesn't draw lines all over the screen.
 749 void stars_camera_cut()
 750 {
 751         last_stars_filled = 0;
 752         reload_old_debris = 1;
 753 }
 754
 755 //#define TIME_STAR_CODE                // enable to time star code
 756
 757 extern int Sun_drew;
 758 extern float Viewer_zoom;
 759
 760 // get the world coords of the sun pos on the unit sphere.
 761 void stars_get_sun_pos(int sun_n, vector *pos)
 762 {
 763         vector temp;
 764 #ifndef MAKE_FS1
 765         matrix rot;
 766 #endif
 767
 768         // sanity
 769         SDL_assert(sun_n < Num_suns);
 770         if((sun_n >= Num_suns) || (sun_n < 0)){
 771                 return;
 772         }
 773
 774         // rotate the sun properly
 775         temp = vmd_zero_vector;
 776         temp.xyz.z = 1.0f;
 777
 778         // rotation matrix
 779 #ifdef MAKE_FS1
 780         // we aleady know what the matrix is so just rotate
 781         vm_vec_rotate(pos, &temp, &Suns[sun_n].m);
 782 #else
 783         vm_angles_2_matrix(&rot, &Suns[sun_n].ang);
 784         vm_vec_rotate(pos, &temp, &rot);
 785 #endif
 786 }
 787
 788 // draw sun
 789 void stars_draw_sun( int show_sun )
 790 {
 791         int idx;
 792         vector sun_pos;
 793         vector sun_dir;
 794         vertex sun_vex;
 795         starfield_bitmap *bm;
 796         float local_scale = 1.0f;
 797
 798         // no suns drew yet
 799         Sun_drew = 0;
 800
 801         // draw all suns
 802         for(idx=0; idx<Num_suns; idx++){
 803                 // get the instance
 804                 bm = stars_lookup_sun(&Suns[idx]);
 805                 if(bm == NULL){
 806                         continue;
 807                 }
 808
 809                 // get sun pos
 810                 sun_pos = vmd_zero_vector;
 811                 sun_pos.xyz.y = 1.0f;
 812                 stars_get_sun_pos(idx, &sun_pos);
 813
 814                 // get the direction
 815                 sun_dir = sun_pos;
 816                 vm_vec_normalize(&sun_dir);
 817
 818                 // add the light source corresponding to the sun
 819                 light_add_directional(&sun_dir, bm->i, bm->r, bm->g, bm->b);
 820
 821                 // if supernova
 822                 if(supernova_active()){
 823                         local_scale = 1.0f + (SUPERNOVA_SUN_SCALE * supernova_pct_complete());
 824                 }
 825
 826                 // draw the sun itself, keep track of how many we drew
 827                 gr_set_bitmap(bm->bitmap, GR_ALPHABLEND_FILTER, GR_BITBLT_MODE_NORMAL, 0.999f, -1, -1);
 828                 g3_rotate_faraway_vertex(&sun_vex, &sun_pos);
 829 #ifdef MAKE_FS1
 830                 // divide by 10 to make normal size
 831                 if(!g3_draw_bitmap(&sun_vex, 0, 0.05f * (Suns[idx].scale_x / 10) * local_scale, TMAP_FLAG_TEXTURED)){
 832 #else
 833                 if(!g3_draw_bitmap(&sun_vex, 0, 0.05f * Suns[idx].scale_x * local_scale, TMAP_FLAG_TEXTURED)){
 834 #endif
 835                         Sun_drew++;
 836                 }
 837         }
 838 }
 839
 840 // draw the corresponding glow for sun_n
 841 void stars_draw_sun_glow(int sun_n)
 842 {
 843         starfield_bitmap *bm;
 844         vector sun_pos, sun_dir;
 845         vertex sun_vex;
 846         float local_scale = 1.0f;
 847
 848         // sanity
 849         SDL_assert(sun_n < Num_suns);
 850         if((sun_n >= Num_suns) || (sun_n < 0)){
 851                 return;
 852         }
 853
 854         // get the instance
 855         bm = stars_lookup_sun(&Suns[sun_n]);
 856         if(bm == NULL){
 857                 return;
 858         }
 859
 860         // get sun pos
 861         sun_pos = vmd_zero_vector;
 862         sun_pos.xyz.y = 1.0f;
 863         stars_get_sun_pos(sun_n, &sun_pos);
 864
 865         // get the direction
 866         sun_dir = sun_pos;
 867         vm_vec_normalize(&sun_dir);
 868
 869         // if supernova
 870         if(supernova_active()){
 871                 local_scale = 1.0f + (SUPERNOVA_SUN_SCALE * supernova_pct_complete());
 872         }
 873
 874         // draw the sun itself, keep track of how many we drew
 875         gr_set_bitmap(bm->glow_bitmap, GR_ALPHABLEND_FILTER, GR_BITBLT_MODE_NORMAL, 0.5f, -1, -1);
 876         g3_rotate_faraway_vertex(&sun_vex, &sun_pos);
 877 #ifdef MAKE_FS1
 878         // divide by 10 to make normal size
 879         g3_draw_bitmap(&sun_vex, 0, 0.10f * (Suns[sun_n].scale_x / 10) * local_scale, TMAP_FLAG_TEXTURED);
 880 #else
 881         g3_draw_bitmap(&sun_vex, 0, 0.10f * Suns[sun_n].scale_x * local_scale, TMAP_FLAG_TEXTURED);
 882 #endif
 883 }
 884
 885 // draw bitmaps
 886 void stars_draw_bitmaps( int show_bitmaps )
 887 {
 888         int idx;
 889         int star_index;
 890
 891         // if we're in the nebula, don't render any backgrounds
 892         if(The_mission.flags & MISSION_FLAG_FULLNEB){
 893                 return;
 894         }
 895
 896         // detail settings
 897         if(!Detail.planets_suns){
 898                 return;
 899         }
 900
 901         // render all bitmaps
 902         for(idx=0; idx<Num_starfield_bitmaps; idx++){
 903                 // lookup the info index
 904                 star_index = stars_find_bitmap(Starfield_bitmap_instance[idx].filename);
 905                 if(star_index < 0){
 906                         continue;
 907                 }
 908
 909                 // set the bitmap
 910                 if(Fred_running){
 911                         gr_set_bitmap(Starfield_bitmaps[star_index].bitmap, GR_ALPHABLEND_FILTER, GR_BITBLT_MODE_NORMAL, 0.9999f, -1, -1);
 912                         g3_draw_perspective_bitmap(&Starfield_bitmap_instance[idx].ang, Starfield_bitmap_instance[idx].scale_x, Starfield_bitmap_instance[idx].scale_y, Starfield_bitmap_instance[idx].div_x, Starfield_bitmap_instance[idx].div_y, TMAP_FLAG_TEXTURED | TMAP_FLAG_CORRECT);
 913                 } else {
 914                         if(Starfield_bitmaps[star_index].xparent){
 915                                 gr_set_bitmap(Starfield_bitmaps[star_index].bitmap, GR_ALPHABLEND_NONE, GR_BITBLT_MODE_NORMAL, 1.0f, -1, -1);
 916                                 g3_draw_perspective_bitmap(&Starfield_bitmap_instance[idx].ang, Starfield_bitmap_instance[idx].scale_x, Starfield_bitmap_instance[idx].scale_y, Starfield_bitmap_instance[idx].div_x, Starfield_bitmap_instance[idx].div_y, TMAP_FLAG_TEXTURED | TMAP_FLAG_CORRECT | TMAP_FLAG_XPARENT);
 917                         } else {
 918                                 gr_set_bitmap(Starfield_bitmaps[star_index].bitmap, GR_ALPHABLEND_FILTER, GR_BITBLT_MODE_NORMAL, 0.9999f, -1, -1);
 919                                 g3_draw_perspective_bitmap(&Starfield_bitmap_instance[idx].ang, Starfield_bitmap_instance[idx].scale_x, Starfield_bitmap_instance[idx].scale_y, Starfield_bitmap_instance[idx].div_x, Starfield_bitmap_instance[idx].div_y, TMAP_FLAG_TEXTURED | TMAP_FLAG_CORRECT);
 920                         }
 921                 }
 922         }
 923 }
 924
 925 /*
 926 void calculate_bitmap_matrix(starfield_bitmaps *bm, vector *v)
 927 {
 928         vm_vector_2_matrix(&bm->m, v, NULL, NULL);
 929         vm_orthogonalize_matrix(&bm->m);
 930 }
 931
 932 void calculate_bitmap_points(starfield_bitmaps *bm, float bank)
 933 {
 934         int i;
 935         vector fvec, uvec, rvec, tmp;
 936         angles tangles;
 937
 938         vm_orthogonalize_matrix(&bm->m);
 939         if (bank) {
 940                 tangles.p = tangles.h = 0.0f;
 941                 tangles.b = bank;
 942                 vm_rotate_matrix_by_angles(&bm->m, &tangles);
 943         }
 944
 945         fvec = bm->m.fvec;
 946         vm_vec_scale(&fvec, bm->dist );
 947         uvec = bm->m.uvec;
 948         rvec = bm->m.rvec;
 949
 950         vm_vec_sub(&tmp, &fvec, &uvec);
 951         vm_vec_sub(&bm->points[3], &tmp, &rvec);
 952
 953         vm_vec_sub(&tmp, &fvec, &uvec);
 954         vm_vec_add(&bm->points[2], &tmp, &rvec);
 955
 956         vm_vec_add(&tmp, &fvec, &uvec);
 957         vm_vec_add(&bm->points[1], &tmp, &rvec);
 958
 959         vm_vec_add(&tmp, &fvec, &uvec);
 960         vm_vec_sub(&bm->points[0], &tmp, &rvec);
 961
 962         for (i=0; i<4; i++){
 963                 vm_vec_normalize(&bm->points[i]);
 964         }
 965 }
 966 */
 967
 968 extern int Interp_subspace;
 969 extern float Interp_subspace_offset_u;
 970 extern float Interp_subspace_offset_u;
 971 extern float Interp_subspace_offset_v;
 972
 973 float subspace_offset_u = 0.0f;
 974 float subspace_offset_u_inner = 0.0f;
 975 float subspace_offset_v = 0.0f;
 976
 977 float subspace_u_speed = 0.07f;                 // how fast u changes
 978 float subspace_v_speed = 0.05f;                 // how fast v changes
 979
 980 int Subspace_glow_bitmap = -1;
 981
 982 float Subspace_glow_frame = 0.0f;
 983 float Subspace_glow_rate = 1.0f;
 984
 985
 986 //XSTR:OFF
 987 DCF(subspace_set,"Set parameters for subspace effect")
 988 {
 989         if ( Dc_command )       {
 990                 dc_get_arg(ARG_STRING);
 991                 if ( !strcmp( Dc_arg, "u" ))    {
 992                         dc_get_arg(ARG_FLOAT);
 993                         if ( Dc_arg_float < 0.0f )      {
 994                                 Dc_help = 1;
 995                         } else {
 996                                 subspace_u_speed = Dc_arg_float;
 997                         }
 998                 } else if ( !strcmp( Dc_arg, "v" ))     {
 999                         dc_get_arg(ARG_FLOAT);
1000                         if ( Dc_arg_float < 0.0f )      {
1001                                 Dc_help = 1;
1002                         } else {
1003                                 subspace_v_speed = Dc_arg_float;
1004                         }
1005                 } else {
1006                         // print usage, not stats
1007                         Dc_help = 1;
1008                 }
1009         }
1010
1011         if ( Dc_help )  {
1012                 dc_printf( "Usage: subspace keyword\nWhere keyword can be in the following forms:\n" );
1013                 dc_printf( "subspace u X    Where X is how fast u moves.\n", MAX_STARS );
1014                 dc_printf( "subspace v X    Where X is how fast v moves.\n" );
1015                 dc_printf( "\nUse '? subspace' to see current values.\n" );
1016                 Dc_status = 0;  // don't print status if help is printed.  Too messy.
1017         }
1018
1019         if ( Dc_status )        {
1020                 dc_printf( "u: %.2f\n", subspace_u_speed );
1021                 dc_printf( "v: %.2f\n", subspace_v_speed );
1022         }
1023 }
1024 //XSTR:ON
1025
1026 void subspace_render()
1027 {
1028         if ( Subspace_model_inner == -1 )       {
1029                 Subspace_model_inner = model_load( "subspace_small.pof", 0, NULL );
1030                 SDL_assert(Subspace_model_inner>-1);
1031         }
1032
1033         if ( Subspace_model_outer == -1 )       {
1034                 Subspace_model_outer = model_load( "subspace_big.pof", 0, NULL );
1035                 SDL_assert(Subspace_model_outer>-1);
1036         }
1037
1038         if ( Subspace_glow_bitmap == -1 )       {
1039                 Subspace_glow_bitmap = bm_load( NOX("SunGlow01"));
1040                 SDL_assert(Subspace_glow_bitmap>-1);
1041         }
1042
1043         Subspace_glow_frame += flFrametime * 1.0f;
1044
1045         float total_time = i2fl(NOISE_NUM_FRAMES) / 15.0f;
1046
1047         // Sanity checks
1048         if ( Subspace_glow_frame < 0.0f )       Subspace_glow_frame = 0.0f;
1049         if ( Subspace_glow_frame > 100.0f ) Subspace_glow_frame = 0.0f;
1050
1051         while ( Subspace_glow_frame > total_time )      {
1052                 Subspace_glow_frame -= total_time;
1053         }
1054         int framenum = fl2i( (Subspace_glow_frame*NOISE_NUM_FRAMES) / total_time );
1055         if ( framenum < 0 ) framenum = 0;
1056         if ( framenum >= NOISE_NUM_FRAMES ) framenum = NOISE_NUM_FRAMES-1;
1057
1058         subspace_offset_u += flFrametime*subspace_u_speed;
1059         if (subspace_offset_u > 1.0f )  {
1060                 subspace_offset_u -= 1.0f;
1061         }
1062
1063         subspace_offset_u_inner += flFrametime*subspace_u_speed*3.0f;
1064         if (subspace_offset_u > 1.0f )  {
1065                 subspace_offset_u -= 1.0f;
1066         }
1067
1068         subspace_offset_v += flFrametime*subspace_v_speed;
1069         if (subspace_offset_v > 1.0f )  {
1070                 subspace_offset_v -= 1.0f;
1071         }
1072
1073
1074
1075         matrix tmp;
1076         angles angs = { 0.0f, 0.0f, 0.0f };
1077         angs.b = subspace_offset_v * PI2;
1078
1079         vm_angles_2_matrix(&tmp,&angs);
1080
1081         int saved_gr_zbuffering =       gr_zbuffer_get();
1082
1083         gr_zbuffer_set(GR_ZBUFF_NONE);
1084
1085         int render_flags = MR_NO_LIGHTING | MR_ALWAYS_REDRAW;
1086
1087         Interp_subspace = 1;
1088         Interp_subspace_offset_u = 1.0f - subspace_offset_u;
1089         Interp_subspace_offset_v = 0.0f;
1090
1091         model_set_thrust( Subspace_model_inner, 1.0f, -1, Subspace_glow_bitmap, Noise[framenum] );
1092         render_flags |= MR_SHOW_THRUSTERS;
1093         model_render( Subspace_model_outer, &tmp, &Eye_position, render_flags );        //MR_NO_CORRECT|MR_SHOW_OUTLINE
1094
1095         Interp_subspace = 1;
1096         Interp_subspace_offset_u = 1.0f - subspace_offset_u_inner;
1097         Interp_subspace_offset_v = 0.0f;
1098
1099         angs.b = -subspace_offset_v * PI2;
1100
1101         vm_angles_2_matrix(&tmp,&angs);
1102
1103         model_set_outline_color(255,255,255);
1104
1105         model_set_thrust( Subspace_model_inner, 1.0f, -1, Subspace_glow_bitmap, Noise[framenum] );
1106         render_flags |= MR_SHOW_THRUSTERS;
1107
1108         model_render( Subspace_model_inner, &tmp, &Eye_position, render_flags  );       //MR_NO_CORRECT|MR_SHOW_OUTLINE
1109
1110         Interp_subspace = 0;
1111         gr_zbuffer_set(saved_gr_zbuffering);
1112 }
1113
1114 void stars_draw( int show_stars, int show_suns, int show_nebulas, int show_subspace )
1115 {
1116         int i;
1117         float vdist;
1118
1119
1120         int gr_zbuffering_save = gr_zbuffer_get();
1121         gr_zbuffer_set(GR_ZBUFF_NONE);
1122
1123         if ( show_subspace )    {
1124                 subspace_render();
1125         }
1126
1127
1128         if (Num_stars >= MAX_STARS){
1129                 Num_stars = MAX_STARS;
1130         }
1131
1132 #ifdef TIME_STAR_CODE
1133         fix xt1, xt2;
1134         xt1 = timer_get_fixed_seconds();
1135 #endif
1136
1137         if ( show_nebulas && (Game_detail_flags & DETAIL_FLAG_NEBULAS) && (Neb2_render_mode != NEB2_RENDER_POF) && (Neb2_render_mode != NEB2_RENDER_LAME))      {
1138                 nebula_render();
1139         }
1140
1141         // draw background stuff
1142         if((Neb2_render_mode != NEB2_RENDER_POLY) && (Neb2_render_mode != NEB2_RENDER_LAME) && show_stars){
1143                 // semi-hack, do we don't fog the background
1144                 int neb_save = Neb2_render_mode;
1145                 Neb2_render_mode = NEB2_RENDER_NONE;
1146                 extern void stars_draw_background();
1147                 stars_draw_background();
1148                 Neb2_render_mode = neb_save;
1149         }
1150
1151         if (show_stars && ( Game_detail_flags & DETAIL_FLAG_STARS) && !(The_mission.flags & MISSION_FLAG_FULLNEB) && (supernova_active() < 3))  {
1152                 //Num_stars = 1;
1153
1154                 star *sp;
1155
1156                 if ( !last_stars_filled )       {
1157                         for (sp=Stars,i=0; i<Num_stars; i++, sp++ ) {
1158                                 vertex p2;
1159                                 g3_rotate_faraway_vertex(&p2, &sp->pos);
1160                                 sp->last_star_pos.xyz.x = p2.x;
1161                                 sp->last_star_pos.xyz.y = p2.y;
1162                                 sp->last_star_pos.xyz.z = p2.z;
1163                         }
1164                 }
1165
1166                 int tmp_num_stars;
1167
1168                 tmp_num_stars = (Detail.num_stars*Num_stars)/MAX_DETAIL_LEVEL;
1169                 if (tmp_num_stars < 0 ) {
1170                         tmp_num_stars = 0;
1171                 } else if ( tmp_num_stars > Num_stars ) {
1172                         tmp_num_stars = Num_stars;
1173                 }
1174
1175                 for (sp=Stars,i=0; i<tmp_num_stars; i++, sp++ ) {
1176                         vertex p1, p2;
1177                         int can_draw = 1;
1178
1179                         memset(&p1, 0, sizeof(vertex));
1180
1181                         // This makes a star look "proper" by not translating the
1182                         // point around the viewer's eye before rotation.  In other
1183                         // words, when the ship translates, the stars do not change.
1184
1185                         g3_rotate_faraway_vertex(&p2, &sp->pos);
1186                         if ( p2.codes ) {
1187                                 can_draw = 0;
1188                         } else {
1189                                 g3_project_vertex(&p2);
1190                                 if ( p2.flags & PF_OVERFLOW )   {
1191                                         can_draw = 0;
1192                                 }
1193                         }
1194
1195                         float dist = 0.0f;
1196
1197                         if ( can_draw && (Star_flags & (STAR_FLAG_TAIL|STAR_FLAG_DIM)) )        {
1198
1199                                 dist = vm_vec_dist_quick( &sp->last_star_pos, (vector *)&p2.x );
1200
1201                                 float ratio;
1202                                 if ( dist > Star_max_length )   {
1203                                         ratio = Star_max_length / dist;
1204                                         dist = Star_max_length;
1205                                 } else {
1206                                         ratio = 1.0f;
1207                                 }
1208                                 ratio *= Star_amount;
1209
1210                                 p1.x = p2.x + (sp->last_star_pos.xyz.x-p2.x)*ratio;
1211                                 p1.y = p2.y + (sp->last_star_pos.xyz.y-p2.y)*ratio;
1212                                 p1.z = p2.z + (sp->last_star_pos.xyz.z-p2.z)*ratio;
1213
1214                                 p1.flags = 0;   // not projected
1215                                 g3_code_vertex( &p1 );
1216
1217                                 if ( p1.codes ) {
1218                                         can_draw = 0;
1219                                 } else {
1220                                         g3_project_vertex(&p1);
1221                                         if ( p1.flags & PF_OVERFLOW )   {
1222                                                 can_draw = 0;
1223                                         }
1224                                 }
1225                         }
1226
1227                         sp->last_star_pos.xyz.x = p2.x;
1228                         sp->last_star_pos.xyz.y = p2.y;
1229                         sp->last_star_pos.xyz.z = p2.z;
1230
1231                         if ( !can_draw )        continue;
1232
1233                         int color;
1234
1235                         if ( Star_flags & STAR_FLAG_DIM )       {
1236
1237                                 float colorf = 255.0f - dist*Star_dim;
1238
1239                                 if ( colorf < Star_cap )
1240                                         colorf = Star_cap;
1241
1242                                 color = (fl2i(colorf)*(i&7))/256;
1243
1244                         } else {
1245                                 color = i & 7;
1246                         }
1247
1248                         gr_set_color_fast( &star_aacolors[color] );
1249
1250                         // if the two points are the same, fudge it, since some D3D cards (G200 and G400) are lame.
1251                         if ( (fl2i(p1.sx) == fl2i(p2.sx)) && (fl2i(p1.sy) == fl2i(p2.sy)) ) {
1252                                 p1.sx += 1.0f;
1253                         }
1254
1255                         gr_aaline(&p1,&p2);
1256                 }
1257         }
1258
1259         last_stars_filled = 1;
1260
1261 #ifdef TIME_STAR_CODE
1262         xt2 = timer_get_fixed_seconds();
1263         mprintf(( "Stars: %d\n", xt2-xt1 ));
1264 #endif
1265
1266
1267         if ( (Game_detail_flags & DETAIL_FLAG_MOTION) && (!Fred_running) && (supernova_active() < 3) )  {
1268
1269                 gr_set_color( 0, 0, 0 );
1270
1271                 // turn off fogging
1272                 if(The_mission.flags & MISSION_FLAG_FULLNEB){
1273                         gr_fog_set(GR_FOGMODE_NONE, 0, 0, 0, -1.0f, -1.0f);
1274                 }
1275
1276                 old_debris * d = odebris;
1277                 for (i=0; i<MAX_DEBRIS; i++, d++ ) {
1278                         vertex p;
1279
1280                         if (!d->active) {
1281                                 d->pos.xyz.x = f2fl(myrand() - MY_RAND_MAX/2);
1282                                 d->pos.xyz.y = f2fl(myrand() - MY_RAND_MAX/2);
1283                                 d->pos.xyz.z = f2fl(myrand() - MY_RAND_MAX/2);
1284
1285                                 vm_vec_normalize(&d->pos);
1286
1287                                 vm_vec_scale(&d->pos, MAX_DIST);
1288                                 vm_vec_add2(&d->pos, &Eye_position );
1289 //                              vm_vec_add2(&d->pos, &Player_obj->pos );
1290                                 d->active = 1;
1291                                 d->vclip = i % MAX_DEBRIS_VCLIPS;       //rand()
1292
1293                                 // if we're in full neb mode
1294                                 if((The_mission.flags & MISSION_FLAG_FULLNEB) && (Neb2_render_mode != NEB2_RENDER_NONE)){
1295                                         d->size = i2fl(myrand() % 4)*BASE_SIZE_NEB;
1296                                 } else {
1297                                         d->size = i2fl(myrand() % 4)*BASE_SIZE;
1298                                 }
1299
1300                                 vm_vec_sub( &d->last_pos, &d->pos, &Eye_position );
1301                         }
1302
1303                         if ( reload_old_debris )        {
1304                                 vm_vec_sub( &d->last_pos, &d->pos, &Eye_position );
1305                         }
1306
1307                         g3_rotate_vertex(&p, &d->pos);
1308
1309                         if (p.codes == 0) {
1310                                 int frame = Missiontime / (DEBRIS_ROT_MIN + (i % DEBRIS_ROT_RANGE) * DEBRIS_ROT_RANGE_SCALER);
1311                                 frame %= debris_vclips[d->vclip].nframes;
1312
1313                                 if((The_mission.flags & MISSION_FLAG_FULLNEB) && (Neb2_render_mode != NEB2_RENDER_NONE)){
1314                                         gr_set_bitmap( debris_vclips[d->vclip].bm + frame, GR_ALPHABLEND_FILTER, GR_BITBLT_MODE_NORMAL, 0.3f, -1, -1);
1315                                 } else {
1316                                         gr_set_bitmap( debris_vclips[d->vclip].bm + frame, GR_ALPHABLEND_NONE, GR_BITBLT_MODE_NORMAL, 1.0f, -1, -1);
1317                                 }
1318
1319                                 vector tmp;
1320                                 vm_vec_add( &tmp, &d->last_pos, &Eye_position );
1321                                 g3_draw_laser( &d->pos,d->size,&tmp,d->size, TMAP_FLAG_TEXTURED|TMAP_FLAG_XPARENT, 25.0f );
1322                         }
1323
1324                         vm_vec_sub( &d->last_pos, &d->pos, &Eye_position );
1325
1326                         vdist = vm_vec_mag_quick(&d->last_pos);
1327
1328                         if (vdist > MAX_DIST_RANGE)
1329                                 d->active = 0;
1330                         else if (vdist < MIN_DIST_RANGE)
1331                                 d->active = 0;
1332
1333         //              vector tmp;
1334         //              vm_vec_sub( &tmp, &d->pos, &Player_obj->pos );
1335         //              vdist = vm_vec_dot( &tmp, &Player_obj->orient.fvec );
1336         //              if ( vdist < 0.0f )
1337         //                      d->active = 0;
1338
1339                 }
1340
1341                 reload_old_debris = 0;
1342         }
1343
1344
1345         stars_draw_sun( show_suns );
1346         stars_draw_bitmaps( show_suns );
1347
1348         gr_zbuffer_set( gr_zbuffering_save );
1349 }
1350
1351 void stars_page_in()
1352 {
1353         int i, j;
1354
1355         // Initialize the subspace stuff
1356
1357         if ( Game_subspace_effect )     {
1358
1359                 Subspace_model_inner = model_load( "subspace_small.pof", 0, NULL );
1360                 SDL_assert(Subspace_model_inner>-1);
1361                 Subspace_model_outer = model_load( "subspace_big.pof", 0, NULL );
1362                 SDL_assert(Subspace_model_outer>-1);
1363
1364                 polymodel *pm;
1365
1366                 pm = model_get(Subspace_model_inner);
1367
1368                 nprintf(( "Paging", "Paging in textures for subspace effect.\n" ));
1369
1370                 for (j=0; j<pm->n_textures; j++ )       {
1371                         int bitmap_num = pm->original_textures[j];
1372
1373                         if ( bitmap_num > -1 )  {
1374                                 bm_page_in_texture( bitmap_num );
1375                         }
1376                 }
1377
1378                 pm = model_get(Subspace_model_outer);
1379
1380                 nprintf(( "Paging", "Paging in textures for subspace effect.\n" ));
1381
1382                 for (j=0; j<pm->n_textures; j++ )       {
1383                         int bitmap_num = pm->original_textures[j];
1384
1385                         if ( bitmap_num > -1 )  {
1386                                 bm_page_in_texture( bitmap_num );
1387                         }
1388                 }
1389         } else {
1390                 Subspace_model_inner = -1;
1391                 Subspace_model_outer = -1;
1392         }
1393
1394         Subspace_glow_bitmap = bm_load( NOX("SunGlow01"));
1395         bm_page_in_xparent_texture(Subspace_glow_bitmap);
1396
1397         // page in starfield bitmaps
1398         int idx, t;
1399         idx = 0;
1400         while((idx < MAX_STARFIELD_BITMAPS) && (Starfield_bitmaps[idx].bitmap != -1)){
1401                 // make sure it's used in this mission before loading
1402                 for (t=0; t<Num_starfield_bitmaps; t++) {
1403                         if (!SDL_strcasecmp(Starfield_bitmaps[idx].filename, Starfield_bitmap_instance[t].filename)) {
1404                                 if(Starfield_bitmaps[idx].xparent){
1405                                         bm_page_in_xparent_texture(Starfield_bitmaps[idx].bitmap);
1406                                 } else {
1407                                         bm_page_in_texture(Starfield_bitmaps[idx].bitmap);
1408                                 }
1409                         }
1410                 }
1411
1412                 // next;
1413                 idx++;
1414         }
1415
1416         // sun bitmaps and glows
1417         idx = 0;
1418         while((idx < MAX_STARFIELD_BITMAPS) && (Sun_bitmaps[idx].bitmap != -1) && (Sun_bitmaps[idx].glow_bitmap != -1)){
1419                 // make sure it's used in this mission before loading
1420                 for (t=0; t<Num_suns; t++) {
1421                         if (!SDL_strcasecmp(Sun_bitmaps[idx].filename, Suns[t].filename)) {
1422                                 bm_page_in_texture(Sun_bitmaps[idx].bitmap);
1423                                 bm_page_in_texture(Sun_bitmaps[idx].glow_bitmap);
1424                         }
1425                 }
1426
1427                 // next
1428                 idx++;
1429         }
1430
1431         for (i=0; i<MAX_DEBRIS_VCLIPS; i++ )    {
1432                 for (j=0; j<debris_vclips[i].nframes; j++ )     {
1433                         bm_page_in_xparent_texture(debris_vclips[i].bm + j);
1434                 }
1435         }
1436 }
1437
1438 // background nebula models and planets
1439 void stars_draw_background()
1440 {
1441         if((Nmodel_num < 0) || (Nmodel_bitmap < 0)){
1442                 return;
1443         }
1444
1445         // draw the model at the player's eye wif no z-buffering
1446         model_set_alpha(1.0f);
1447         model_set_forced_texture(Nmodel_bitmap);
1448         model_render(Nmodel_num, &vmd_identity_matrix, &Eye_position, MR_NO_ZBUFFER | MR_NO_CULL | MR_ALL_XPARENT | MR_NO_LIGHTING | MR_FORCE_TEXTURE);
1449         model_set_forced_texture(-1);
1450 }
1451
1452 // call this to set a specific model as the background model
1453 void stars_set_background_model(const char *model_name, const char *texture_name)
1454 {
1455         Nmodel_num = model_load(model_name, 0, NULL);
1456         Nmodel_bitmap = bm_load(texture_name);
1457 }
1458
1459 // lookup a starfield bitmap, return index or -1 on fail
1460 int stars_find_bitmap(const char *name)
1461 {
1462         int idx;
1463
1464         // lookup
1465         for(idx=0; idx<MAX_STARFIELD_BITMAPS; idx++){
1466                 if(!strcmp(name, Starfield_bitmaps[idx].filename)){
1467                         return idx;
1468                 }
1469         }
1470
1471         // not found
1472         return -1;
1473 }
1474
1475 // lookup a sun by bitmap filename, return index or -1 on fail
1476 int stars_find_sun(const char *name)
1477 {
1478         int idx;
1479
1480         // lookup
1481         for(idx=0; idx<MAX_STARFIELD_BITMAPS; idx++){
1482                 if(!strcmp(name, Sun_bitmaps[idx].filename)){
1483                         return idx;
1484                 }
1485         }
1486
1487         // not found
1488         return -1;
1489 }
1490