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 1.8  2004/07/04 11:40:26  taylor
  20  * only load those background bitmaps that we are going to use this mission
  21  *
  22  * Revision 1.7  2003/05/25 02:30:44  taylor
  23  * Freespace 1 support
  24  *
  25  * Revision 1.6  2002/06/22 23:57:39  relnev
  26  * remove writable strings.
  27  *
  28  * fix compile for intel compiler.
  29  *
  30  * Revision 1.5  2002/06/17 06:33:11  relnev
  31  * ryan's struct patch for gcc 2.95
  32  *
  33  * Revision 1.4  2002/06/09 04:41:27  relnev
  34  * added copyright header
  35  *
  36  * Revision 1.3  2002/06/02 04:26:34  relnev
  37  * warning cleanup
  38  *
  39  * Revision 1.2  2002/05/07 03:16:52  theoddone33
  40  * The Great Newline Fix
  41  *
  42  * Revision 1.1.1.1  2002/05/03 03:28:10  root
  43  * Initial import.
  44  *
  45  *
  46  * 34    9/07/99 4:01p Dave
  47  * Fixed up a string.tbl paroblem (self destruct message). Make sure IPX
  48  * does everything properly (setting up address when binding). Remove
  49  * black rectangle background from UI_INPUTBOX.
  50  *
  51  * 33    9/01/99 10:14a Dave
  52  * Pirate bob.
  53  *
  54  * 32    8/30/99 5:01p Dave
  55  * Made d3d do less state changing in the nebula. Use new chat server for
  56  * PXO.
  57  *
  58  * 31    8/19/99 10:59a Dave
  59  * Packet loss detection.
  60  *
  61  * 30    7/27/99 3:52p Dave
  62  * Make star drawing a bit more robust to help lame D3D cards.
  63  *
  64  * 29    7/21/99 8:10p Dave
  65  * First run of supernova effect.
  66  *
  67  * 28    7/13/99 2:01p Dave
  68  * Don't draw background bitmaps in the nebula.
  69  *
  70  * 27    6/08/99 2:34p Jasenw
  71  * Made perspective bitmaps render in Fred.
  72  *
  73  * 26    6/04/99 1:18p Dave
  74  * Fixed briefing model rendering problems. Made show background option in
  75  * fred toggle nebula rendering.
  76  *
  77  * 25    6/03/99 6:37p Dave
  78  * More TNT fun. Made perspective bitmaps more flexible.
  79  *
  80  * 24    5/28/99 1:45p Dave
  81  * Fixed up perspective bitmap drawing.
  82  *
  83  * 23    5/20/99 7:00p Dave
  84  * Added alternate type names for ships. Changed swarm missile table
  85  * entries.
  86  *
  87  * 22    5/11/99 10:03a Dave
  88  * Put a bunch of stuff into tables.
  89  *
  90  * 21    5/11/99 9:10a Dave
  91  * Move default sun position.
  92  *
  93  * 20    5/09/99 6:00p Dave
  94  * Lots of cool new effects. E3 build tweaks.
  95  *
  96  * 19    4/26/99 8:49p Dave
  97  * Made all pof based nebula stuff full customizable through fred.
  98  *
  99  * 18    4/25/99 7:43p Dave
 100  * Misc small bug fixes. Made sun draw properly.
 101  *
 102  * 17    4/23/99 5:53p Dave
 103  * Started putting in new pof nebula support into Fred.
 104  *
 105  * 16    4/07/99 6:22p Dave
 106  * Fred and Freespace support for multiple background bitmaps and suns.
 107  * Fixed link errors on all subprojects. Moved encrypt_init() to
 108  * cfile_init() and lcl_init(), since its safe to call twice.
 109  *
 110  * 15    3/31/99 8:24p Dave
 111  * Beefed up all kinds of stuff, incluging beam weapons, nebula effects
 112  * and background nebulae. Added per-ship non-dimming pixel colors.
 113  *
 114  * 14    3/20/99 5:09p Dave
 115  * Fixed release build fred warnings and unhandled exception.
 116  *
 117  * 13    3/20/99 3:46p Dave
 118  * Added support for model-based background nebulae. Added 3 new
 119  * sexpressions.
 120  *
 121  * 12    3/20/99 2:04p Dave
 122  * Removed unnecessary planet rendering.
 123  *
 124  * 11    3/19/99 9:51a Dave
 125  * Checkin to repair massive source safe crash. Also added support for
 126  * pof-style nebulae, and some new weapons code.
 127  *
 128  * 12    3/15/99 6:45p Daveb
 129  * Put in rough nebula bitmap support.
 130  *
 131  * 11    3/11/99 5:53p Dave
 132  * More network optimization. Spliced in Dell OEM planet bitmap crap.
 133  *
 134  * 10    2/03/99 11:44a Dave
 135  * Fixed d3d transparent textures.
 136  *
 137  * 9     12/09/98 7:34p Dave
 138  * Cleanup up nebula effect. Tweaked many values.
 139  *
 140  * 8     12/01/98 10:32a Johnson
 141  * Fixed direct3d font problems. Fixed sun bitmap problem. Fixed direct3d
 142  * starfield problem.
 143  *
 144  * 7     12/01/98 8:06a Dave
 145  * Temporary checkin to fix some texture transparency problems in d3d.
 146  *
 147  * 6     11/14/98 5:33p Dave
 148  * Lots of nebula work. Put in ship contrails.
 149  *
 150  * 5     11/05/98 5:55p Dave
 151  * Big pass at reducing #includes
 152  *
 153  * 4     10/13/98 9:29a Dave
 154  * Started neatening up freespace.h. Many variables renamed and
 155  * reorganized. Added AlphaColors.[h,cpp]
 156  *
 157  * 3     10/07/98 11:16a Dave
 158  * Remove warning.
 159  *
 160  * 2     10/07/98 10:54a Dave
 161  * Initial checkin.
 162  *
 163  * 1     10/07/98 10:51a Dave
 164  *
 165  * 106   5/23/98 4:14p John
 166  * Added code to preload textures to video card for AGP.   Added in code
 167  * to page in some bitmaps that weren't getting paged in at level start.
 168  *
 169  * 105   5/13/98 2:53p John
 170  * Made subspace effect work under software.  Had to add new inner loop to
 171  * tmapper.  Added glows to end of subspace effect.  Made subspace effect
 172  * levels use gamepalette-subspace palette.
 173  *
 174  * 104   5/13/98 10:28a John
 175  * made subpsace forward sliding 40% faster.
 176  *
 177  * 103   5/10/98 4:18p John
 178  * Reversed the subspace effect direction
 179  *
 180  * 102   5/08/98 8:38p John
 181  * Subspace tweaks.  Made two layers rotate independentyl.
 182  *
 183  * 101   5/08/98 1:32p John
 184  * Added code for using two layered subspace effects.
 185  *
 186  * 100   5/06/98 5:30p John
 187  * Removed unused cfilearchiver.  Removed/replaced some unused/little used
 188  * graphics functions, namely gradient_h and _v and pixel_sp.   Put in new
 189  * DirectX header files and libs that fixed the Direct3D alpha blending
 190  * problems.
 191  *
 192  * 99    4/22/98 4:09p John
 193  * String externalization
 194  *
 195  * 98    4/22/98 3:28p John
 196  * Fixed XSTR bug
 197  *
 198  * 97    4/13/98 4:54p John
 199  * Made uv rotate independently on subspace effect. Put in DCF function
 200  * for setting subspace speeds.
 201  *
 202  * 96    4/12/98 5:55p John
 203  * Made models work with subspace.  Made subspace rotate also.
 204  *
 205  * 95    4/11/98 6:53p John
 206  * Added first rev of subspace effect.
 207  *
 208  * 94    4/08/98 11:31a Dave
 209  * AL: Fix syntax error for non-demo
 210  *
 211  * 93    4/08/98 10:46a Lawrance
 212  * #ifdef out asteroid check for demo
 213  *
 214  * 92    4/08/98 9:25a John
 215  * Made asteroid missions not show suns
 216  *
 217  * 91    4/07/98 4:17p John
 218  * Made Fred be able to move suns.  Made suns actually affect the lighting
 219  * in the game.
 220  *
 221  * 90    4/07/98 11:19a Hoffoss
 222  * Changed code to only use Sun01 for a bitmap by default, as John
 223  * requested.
 224  *
 225  * $NoKeywords: $
 226  */
 227
 228 #include "pstypes.h"
 229 #include "floating.h"
 230 #include "vecmat.h"
 231 #include "3d.h"
 232 #include "2d.h"
 233 #include "starfield.h"
 234 #include "bmpman.h"
 235 #include "key.h"
 236 #include "freespace.h"
 237 #include "timer.h"
 238 #include "nebula.h"
 239 #include "linklist.h"
 240 #include "lighting.h"
 241 #include "asteroid.h"
 242 #include "missionparse.h"
 243 #include "neb.h"
 244 #include "alphacolors.h"
 245 #include "supernova.h"
 246
 247 #define MAX_DEBRIS_VCLIPS       4
 248 #define DEBRIS_ROT_MIN                          10000
 249 #define DEBRIS_ROT_RANGE                        8
 250 #define DEBRIS_ROT_RANGE_SCALER 10000
 251 #define RND_MAX_MASK    0x3fff
 252 #define HALF_RND_MAX 0x2000
 253
 254 typedef struct debris_vclip {
 255         int     bm;
 256         int     nframes;
 257         char  name[32];
 258 } debris_vclip;
 259
 260 typedef struct {
 261         vector pos;
 262         vector last_pos;
 263         int active;
 264         int vclip;
 265         float size;
 266 } old_debris;
 267
 268 const int MAX_DEBRIS = 200;
 269 const int MAX_STARS = 2000;
 270 const float MAX_DIST = 50.0f;
 271 const float MAX_DIST_RANGE = 60.0f;
 272 const float MIN_DIST_RANGE = 14.0f;
 273 const float BASE_SIZE = 0.12f;
 274 float BASE_SIZE_NEB = 0.5f;
 275
 276 static int Subspace_model_inner = -1;
 277 static int Subspace_model_outer = -1;
 278
 279 int Num_stars = 500;
 280 fix starfield_timestamp = 0;
 281
 282 // for drawing cool stuff on the background - comes from a table
 283 starfield_bitmap Starfield_bitmaps[MAX_STARFIELD_BITMAPS];
 284 starfield_bitmap_instance Starfield_bitmap_instance[MAX_STARFIELD_BITMAPS];
 285 int Num_starfield_bitmaps = 0;
 286
 287 // sun bitmaps and sun glow bitmaps
 288 starfield_bitmap Sun_bitmaps[MAX_STARFIELD_BITMAPS];
 289 starfield_bitmap_instance Suns[MAX_STARFIELD_BITMAPS];
 290 int Num_suns = 0;
 291
 292 int last_stars_filled = 0;
 293 color star_colors[8];
 294 color star_aacolors[8];
 295
 296 typedef struct star {
 297         vector pos;
 298         vector last_star_pos;
 299 } star;
 300
 301 star Stars[MAX_STARS];
 302
 303 old_debris odebris[MAX_DEBRIS];
 304
 305 //XSTR:OFF
 306 debris_vclip debris_vclips_normal[MAX_DEBRIS_VCLIPS] = { { -1, -1, "debris01" }, { -1, -1, "debris02" }, { -1, -1, "debris03" }, { -1, -1, "debris04" } };
 307 debris_vclip debris_vclips_nebula[MAX_DEBRIS_VCLIPS] = { { -1, -1, "Neb01-64" }, { -1, -1, "Neb01-64" }, { -1, -1, "Neb01-64" }, { -1, -1, "Neb01-64" } };
 308 debris_vclip *debris_vclips = debris_vclips_normal;
 309 //XSTR:ON
 310
 311 int stars_debris_loaded = 0;
 312
 313 // background data
 314 int Stars_background_inited = 0;                        // if we're inited
 315 int Nmodel_num = -1;                                                    // model num
 316 int Nmodel_bitmap = -1;                                         // model texture
 317
 318 // given a starfield_bitmap_instance, return a pointer to its parent, for suns
 319 starfield_bitmap *stars_lookup_sun(starfield_bitmap_instance *s)
 320 {
 321         int idx;
 322
 323         // sanity
 324         if(s == NULL){
 325                 return NULL;
 326         }
 327
 328         // lookup
 329         for(idx=0; idx<MAX_STARFIELD_BITMAPS; idx++){
 330                 if(!stricmp(Sun_bitmaps[idx].filename, s->filename)){
 331                         return &Sun_bitmaps[idx];
 332                 }
 333         }
 334
 335         // no findy
 336         return NULL;
 337 }
 338
 339 void stars_load_debris()
 340 {
 341         int i;
 342
 343         // if we're in nebula mode
 344         if(The_mission.flags & MISSION_FLAG_FULLNEB){
 345                 debris_vclips = debris_vclips_nebula;
 346         } else {
 347                 debris_vclips = debris_vclips_normal;
 348         }
 349
 350         for (i=0; i<MAX_DEBRIS_VCLIPS; i++ )    {
 351                 debris_vclips[i].bm = bm_load_animation( debris_vclips[i].name, &debris_vclips[i].nframes, NULL, 1 );
 352                 if ( debris_vclips[i].bm < 0 ) {
 353                         // try loading it as a single bitmap
 354                         debris_vclips[i].bm = bm_load(debris_vclips[i].name);
 355                         debris_vclips[i].nframes = 1;
 356
 357                         if(debris_vclips[i].bm <= 0){
 358                                 Error( LOCATION, "Couldn't load animation/bitmap '%s'\n", debris_vclips[i].name );
 359                         }
 360                 }
 361         }
 362         stars_debris_loaded = 1;
 363 }
 364
 365 // call on game startup
 366 void stars_init()
 367 {
 368         starfield_bitmap *bm;
 369         int count, idx;
 370         char filename[MAX_FILENAME_LEN+1] = "";
 371         char glow_filename[MAX_FILENAME_LEN+1] = "";
 372         float r, g, b, i;
 373
 374         // parse stars.tbl
 375         read_file_text("stars.tbl");
 376         reset_parse();
 377
 378         // make all bitmaps invalid
 379         for(idx=0; idx<MAX_STARFIELD_BITMAPS; idx++){
 380                 Starfield_bitmaps[idx].bitmap = -1;
 381                 Starfield_bitmaps[idx].glow_bitmap = -1;
 382                 strcpy(Starfield_bitmaps[idx].filename, "");
 383                 strcpy(Starfield_bitmaps[idx].glow_filename, "");
 384
 385                 Sun_bitmaps[idx].bitmap = -1;
 386                 Sun_bitmaps[idx].glow_bitmap = -1;
 387                 strcpy(Sun_bitmaps[idx].filename, "");
 388                 strcpy(Sun_bitmaps[idx].glow_filename, "");
 389         }
 390
 391         // starfield bitmaps
 392         count = 0;
 393         while(!optional_string("#end")){
 394                 // intensity alpha bitmap
 395                 if(optional_string("$Bitmap:")){
 396                         stuff_string(filename, F_NAME, NULL);
 397                         if(count < MAX_STARFIELD_BITMAPS){
 398                                 bm = &Starfield_bitmaps[count++];
 399                                 strcpy(bm->filename, filename);
 400                                 bm->xparent = 0;
 401                                 bm->bitmap = bm_load(bm->filename);
 402                                 Assert(bm->bitmap != -1);
 403
 404                                 // if fred is running we should lock the bitmap now
 405                                 if(Fred_running && (bm->bitmap >= 0)){
 406                                         bm_lock(bm->bitmap, 8, BMP_TEX_OTHER);
 407                                         bm_unlock(bm->bitmap);
 408                                 }
 409                         }
 410                 }
 411                 // green xparency bitmap
 412                 else if(optional_string("$BitmapX:")){
 413                         stuff_string(filename, F_NAME, NULL);
 414                         if(count < MAX_STARFIELD_BITMAPS){
 415                                 bm = &Starfield_bitmaps[count++];
 416                                 strcpy(bm->filename, filename);
 417                                 bm->xparent = 1;
 418                                 bm->bitmap = bm_load(bm->filename);
 419                                 Assert(bm->bitmap != -1);
 420
 421                                 // if fred is running we should lock as a 0, 255, 0 bitmap now
 422                                 if(Fred_running && (bm->bitmap >= 0)){
 423                                         bm_lock(bm->bitmap, 8, BMP_TEX_XPARENT);
 424                                         bm_unlock(bm->bitmap);
 425                                 }
 426                         }
 427                 }
 428         }
 429
 430         // sun bitmaps
 431         count = 0;
 432         while(!optional_string("#end")){
 433                 if(optional_string("$Sun:")){
 434                         stuff_string(filename, F_NAME, NULL);
 435
 436                         // associated glow
 437                         required_string("$Sunglow:");
 438                         stuff_string(glow_filename, F_NAME, NULL);
 439
 440                         // associated lighting values
 441                         required_string("$SunRGBI:");
 442                         stuff_float(&r);
 443                         stuff_float(&g);
 444                         stuff_float(&b);
 445                         stuff_float(&i);
 446
 447                         if(count < MAX_STARFIELD_BITMAPS){
 448                                 bm = &Sun_bitmaps[count++];
 449                                 strcpy(bm->filename, filename);
 450                                 strcpy(bm->glow_filename, glow_filename);
 451                                 bm->xparent = 1;
 452                                 bm->bitmap = bm_load(bm->filename);
 453                                 bm->glow_bitmap = bm_load(bm->glow_filename);
 454                                 Assert(bm->bitmap != -1);
 455                                 Assert(bm->glow_bitmap != -1);
 456                                 bm->r = r;
 457                                 bm->g = g;
 458                                 bm->b = b;
 459                                 bm->i = i;
 460
 461                                 // if fred is running we should lock the bitmap now
 462                                 if(Fred_running){
 463                                         if(bm->bitmap >= 0){
 464                                                 bm_lock(bm->bitmap, 8, BMP_TEX_OTHER);
 465                                                 bm_unlock(bm->bitmap);
 466                                         }
 467                                         if(bm->glow_bitmap >= 0){
 468                                                 bm_lock(bm->glow_bitmap, 8, BMP_TEX_OTHER);
 469                                                 bm_unlock(bm->glow_bitmap);
 470                                         }
 471                                 }
 472                         }
 473                 }
 474         }
 475
 476         // normal debris pieces
 477         count = 0;
 478         while(!optional_string("#end")){
 479                 required_string("$Debris:");
 480                 stuff_string(filename, F_NAME, NULL);
 481
 482                 if(count < MAX_DEBRIS_VCLIPS){
 483                         strcpy(debris_vclips_normal[count++].name, filename);
 484                 }
 485         }
 486         Assert(count == 4);
 487
 488         // nebula debris pieces
 489         count = 0;
 490         while(!optional_string("#end")){
 491                 required_string("$DebrisNeb:");
 492                 stuff_string(filename, F_NAME, NULL);
 493
 494                 if(count < MAX_DEBRIS_VCLIPS){
 495                         strcpy(debris_vclips_nebula[count++].name, filename);
 496                 }
 497         }
 498 #ifndef MAKE_FS1 // string not used in FS1
 499         Assert(count == 4);
 500 #endif
 501 }
 502
 503 // call this in game_post_level_init() so we know whether we're running in full nebula mode or not
 504 void stars_level_init()
 505 {
 506         int i;
 507         vector v;
 508         float dist, dist_max;
 509
 510         // reset to -1 so we reload it each mission (if we need to)
 511         Nmodel_num = -1;
 512         if(Nmodel_bitmap != -1){
 513                 bm_unload(Nmodel_bitmap);
 514                 Nmodel_bitmap = -1;
 515         }
 516
 517         // if (!stars_debris_loaded){
 518                 stars_load_debris();
 519         // }
 520
 521 // following code randomly distributes star points within a sphere volume, which
 522 // avoids there being denser areas along the edges and in corners that we had in the
 523 // old rectangular distribution scheme.
 524         dist_max = (float) (HALF_RND_MAX * HALF_RND_MAX);
 525         for (i=0; i<MAX_STARS; i++) {
 526                 dist = dist_max;
 527                 while (dist >= dist_max) {
 528                         v.xyz.x = (float) ((myrand() & RND_MAX_MASK) - HALF_RND_MAX);
 529                         v.xyz.y = (float) ((myrand() & RND_MAX_MASK) - HALF_RND_MAX);
 530                         v.xyz.z = (float) ((myrand() & RND_MAX_MASK) - HALF_RND_MAX);
 531
 532                         dist = v.xyz.x * v.xyz.x + v.xyz.y * v.xyz.y + v.xyz.z * v.xyz.z;
 533                 }
 534                 vm_vec_copy_normalize(&Stars[i].pos, &v);
 535         }
 536
 537         for (i=0; i<MAX_DEBRIS; i++) {
 538                 odebris[i].active = 0;
 539         }
 540
 541         for (i=0; i<8; i++ )    {
 542                 ubyte intensity = (ubyte)((i + 1) * 24);
 543                 gr_init_alphacolor(&star_aacolors[i], 255, 255, 255, intensity, AC_TYPE_BLEND );
 544                 gr_init_color(&star_colors[i], intensity, intensity, intensity );
 545         }
 546
 547         last_stars_filled = 0;
 548
 549 #ifndef MAKE_FS1  // some FS1 missions don't have a sun
 550         // if we have no sun instances, create one
 551         if(Num_suns <= 0){
 552                 mprintf(("Adding default sun\n"));
 553
 554                 // stuff some values
 555                 strcpy(Suns[0].filename, Sun_bitmaps[0].filename);
 556                 Suns[0].scale_x = 1.0f;
 557                 Suns[0].scale_y = 1.0f;
 558                 Suns[0].div_x = 1;
 559                 Suns[0].div_y = 1;
 560                 memset(&Suns[0].ang, 0, sizeof(angles));
 561                 Suns[0].ang.h = fl_radian(60.0f);
 562
 563                 // one sun
 564                 Num_suns = 1;
 565         }
 566 #endif
 567 }
 568
 569
 570 #include "object.h"
 571 extern object * Player_obj;
 572
 573 #define STAR_AMOUNT_DEFAULT 0.75f
 574 #define STAR_DIM_DEFAULT 7800.0f
 575 #define STAR_CAP_DEFAULT 75.0f
 576 #define STAR_MAX_LENGTH_DEFAULT 0.04f           // 312
 577
 578 float Star_amount = STAR_AMOUNT_DEFAULT;
 579 float Star_dim = STAR_DIM_DEFAULT;
 580 float Star_cap = STAR_CAP_DEFAULT;
 581 float Star_max_length = STAR_MAX_LENGTH_DEFAULT;
 582
 583 #define STAR_FLAG_TAIL                  (1<<0)  // Draw a tail when moving
 584 #define STAR_FLAG_DIM                   (1<<1)  // Dim as you move
 585 #define STAR_FLAG_ANTIALIAS     (1<<2)  // Draw the star using antialiased lines
 586 #define STAR_FLAG_DEFAULT               (STAR_FLAG_TAIL | STAR_FLAG_DIM)
 587
 588 uint Star_flags = STAR_FLAG_DEFAULT;
 589
 590 //XSTR:OFF
 591 DCF(stars,"Set parameters for starfield")
 592 {
 593         if ( Dc_command )       {
 594                 dc_get_arg(ARG_STRING);
 595                 if ( !strcmp( Dc_arg, "tail" )) {
 596                         dc_get_arg(ARG_FLOAT);
 597                         if ( (Dc_arg_float < 0.0f) || (Dc_arg_float > 1.0f) )   {
 598                                 Dc_help = 1;
 599                         } else {
 600                                 Star_amount = Dc_arg_float;
 601                         }
 602                 } else if ( !strcmp( Dc_arg, "len" ))   {
 603                         dc_get_arg(ARG_FLOAT);
 604                         Star_max_length = Dc_arg_float;
 605                 } else if ( !strcmp( Dc_arg, "dim" ))   {
 606                         dc_get_arg(ARG_FLOAT);
 607                         if ( Dc_arg_float < 0.0f )      {
 608                                 Dc_help = 1;
 609                         } else {
 610                                 Star_dim = Dc_arg_float;
 611                         }
 612                 } else if ( !strcmp( Dc_arg, "flag" ))  {
 613                         dc_get_arg(ARG_STRING);
 614                         if ( !strcmp( Dc_arg, "tail" )) {
 615                                 Star_flags ^= STAR_FLAG_TAIL;
 616                         } else if ( !strcmp( Dc_arg, "dim" ))   {
 617                                 Star_flags ^= STAR_FLAG_DIM;
 618                         } else if ( !strcmp( Dc_arg, "aa" ))    {
 619                                 Star_flags ^= STAR_FLAG_ANTIALIAS;
 620                         } else {
 621                                 Dc_help = 1;
 622                         }
 623                 } else if ( !strcmp( Dc_arg, "cap" ))   {
 624                         dc_get_arg(ARG_FLOAT);
 625                         if ( (Dc_arg_float < 0.0f) || (Dc_arg_float > 255.0f) ) {
 626                                 Dc_help = 1;
 627                         } else {
 628                                 Star_cap = Dc_arg_float;
 629                         }
 630                 } else if ( !strcmp( Dc_arg, "m0" )  )  {
 631                         Star_amount = 0.0f;
 632                         Star_dim = 0.0f;
 633                         Star_cap = 0.0f;
 634                         Star_flags = 0;
 635                         Star_max_length = STAR_MAX_LENGTH_DEFAULT;
 636                 } else if ( !strcmp( Dc_arg, "m1" ) || !strcmp( Dc_arg, "default" ))    {
 637                         Star_amount = STAR_AMOUNT_DEFAULT;
 638                         Star_dim = STAR_DIM_DEFAULT;
 639                         Star_cap = STAR_CAP_DEFAULT;
 640                         Star_flags = STAR_FLAG_DEFAULT;
 641                         Star_max_length = STAR_MAX_LENGTH_DEFAULT;
 642                 } else if ( !strcmp( Dc_arg, "m2" ))    {
 643                         Star_amount = 0.75f;
 644                         Star_dim = 20.0f;
 645                         Star_cap = 75.0f;
 646                         Star_flags = STAR_FLAG_TAIL|STAR_FLAG_DIM|STAR_FLAG_ANTIALIAS;
 647                         Star_max_length = STAR_MAX_LENGTH_DEFAULT;
 648                 } else if ( !strcmp( Dc_arg, "num" ))   {
 649                         dc_get_arg(ARG_INT);
 650                         if ( (Dc_arg_int < 0) || (Dc_arg_int > MAX_STARS) )     {
 651                                 Dc_help = 1;
 652                         } else {
 653                                 Num_stars = Dc_arg_int;
 654                         }
 655                 } else {
 656                         // print usage, not stats
 657                         Dc_help = 1;
 658                 }
 659         }
 660
 661         if ( Dc_help )  {
 662                 dc_printf( "Usage: stars keyword\nWhere keyword can be in the following forms:\n" );
 663                 dc_printf( "stars default   Resets stars to all default values\n" );
 664                 dc_printf( "stars num X     Sets number of stars to X.  Between 0 and %d.\n", MAX_STARS );
 665                 dc_printf( "stars tail X    Where X is the percent of 'tail' between 0 and 1.0\n" );
 666                 dc_printf( "stars dim X     Where X is the amount stars dim between 0 and 255.0\n" );
 667                 dc_printf( "stars cap X     Where X is the cap of dimming between 0 and 255.\n" );
 668                 dc_printf( "stars len X     Where X is the cap of length.\n" );
 669                 dc_printf( "stars m0        Macro0. Old 'pixel type' crappy stars. flags=none\n" );
 670                 dc_printf( "stars m1        Macro1. (default) tail=.75, dim=20.0, cap=75.0, flags=dim,tail\n" );
 671                 dc_printf( "stars m2        Macro2. tail=.75, dim=20.0, cap=75.0, flags=dim,tail,aa\n" );
 672                 dc_printf( "stars flag X    Toggles flag X, where X is tail or dim or aa (aa=antialias)\n" );
 673                 dc_printf( "\nHINT: set cap to 0 to get dim rate and tail down, then use\n" );
 674                 dc_printf( "cap to keep the lines from going away when moving too fast.\n" );
 675                 dc_printf( "\nUse '? stars' to see current values.\n" );
 676                 Dc_status = 0;  // don't print status if help is printed.  Too messy.
 677         }
 678
 679         if ( Dc_status )        {
 680                 dc_printf( "Num_stars: %d\n", Num_stars );
 681                 dc_printf( "Tail: %.2f\n", Star_amount );
 682                 dc_printf( "Dim: %.2f\n", Star_dim );
 683                 dc_printf( "Cap: %.2f\n", Star_cap );
 684                 dc_printf( "Max length: %.2f\n", Star_max_length );
 685                 dc_printf( "Flags:\n" );
 686                 dc_printf( "  Tail: %s\n", (Star_flags&STAR_FLAG_TAIL?"On":"Off") );
 687                 dc_printf( "  Dim: %s\n", (Star_flags&STAR_FLAG_DIM?"On":"Off") );
 688                 dc_printf( "  Antialias: %s\n", (Star_flags&STAR_FLAG_ANTIALIAS?"On":"Off") );
 689                 dc_printf( "\nTHESE AREN'T SAVED TO DISK, SO IF YOU TWEAK\n" );
 690                 dc_printf( "THESE AND LIKE THEM, WRITE THEM DOWN!!\n" );
 691         }
 692 }
 693 //XSTR:ON
 694
 695 int reload_old_debris = 1;              // If set to one, then reload all the last_pos of the debris
 696
 697 // Call this if camera "cuts" or moves long distances
 698 // so blur effect doesn't draw lines all over the screen.
 699 void stars_camera_cut()
 700 {
 701         last_stars_filled = 0;
 702         reload_old_debris = 1;
 703 }
 704
 705 //#define TIME_STAR_CODE                // enable to time star code
 706
 707 extern int Sun_drew;
 708 extern float Viewer_zoom;
 709
 710 // get the world coords of the sun pos on the unit sphere.
 711 void stars_get_sun_pos(int sun_n, vector *pos)
 712 {
 713         vector temp;
 714 #ifndef MAKE_FS1
 715         matrix rot;
 716 #endif
 717
 718         // sanity
 719         Assert(sun_n < Num_suns);
 720         if((sun_n >= Num_suns) || (sun_n < 0)){
 721                 return;
 722         }
 723
 724         // rotate the sun properly
 725         temp = vmd_zero_vector;
 726         temp.xyz.z = 1.0f;
 727
 728         // rotation matrix
 729 #ifdef MAKE_FS1
 730         // we aleady know what the matrix is so just rotate
 731         vm_vec_rotate(pos, &temp, &Suns[sun_n].m);
 732 #else
 733         vm_angles_2_matrix(&rot, &Suns[sun_n].ang);
 734         vm_vec_rotate(pos, &temp, &rot);
 735 #endif
 736 }
 737
 738 // draw sun
 739 void stars_draw_sun( int show_sun )
 740 {
 741         int idx;
 742         vector sun_pos;
 743         vector sun_dir;
 744         vertex sun_vex;
 745         starfield_bitmap *bm;
 746         float local_scale = 1.0f;
 747
 748         // no suns drew yet
 749         Sun_drew = 0;
 750
 751         // draw all suns
 752         for(idx=0; idx<Num_suns; idx++){
 753                 // get the instance
 754                 bm = stars_lookup_sun(&Suns[idx]);
 755                 if(bm == NULL){
 756                         continue;
 757                 }
 758
 759                 // get sun pos
 760                 sun_pos = vmd_zero_vector;
 761                 sun_pos.xyz.y = 1.0f;
 762                 stars_get_sun_pos(idx, &sun_pos);
 763
 764                 // get the direction
 765                 sun_dir = sun_pos;
 766                 vm_vec_normalize(&sun_dir);
 767
 768                 // add the light source corresponding to the sun
 769                 light_add_directional(&sun_dir, bm->i, bm->r, bm->g, bm->b);
 770
 771                 // if supernova
 772                 if(supernova_active()){
 773                         local_scale = 1.0f + (SUPERNOVA_SUN_SCALE * supernova_pct_complete());
 774                 }
 775
 776                 // draw the sun itself, keep track of how many we drew
 777                 gr_set_bitmap(bm->bitmap, GR_ALPHABLEND_FILTER, GR_BITBLT_MODE_NORMAL, 0.999f);
 778                 g3_rotate_faraway_vertex(&sun_vex, &sun_pos);
 779 #ifdef MAKE_FS1
 780                 // divide by 10 to make normal size
 781                 if(!g3_draw_bitmap(&sun_vex, 0, 0.05f * (Suns[idx].scale_x / 10) * local_scale, TMAP_FLAG_TEXTURED)){
 782 #else
 783                 if(!g3_draw_bitmap(&sun_vex, 0, 0.05f * Suns[idx].scale_x * local_scale, TMAP_FLAG_TEXTURED)){
 784 #endif
 785                         Sun_drew++;
 786                 }
 787         }
 788 }
 789
 790 // draw the corresponding glow for sun_n
 791 void stars_draw_sun_glow(int sun_n)
 792 {
 793         starfield_bitmap *bm;
 794         vector sun_pos, sun_dir;
 795         vertex sun_vex;
 796         float local_scale = 1.0f;
 797
 798         // sanity
 799         Assert(sun_n < Num_suns);
 800         if((sun_n >= Num_suns) || (sun_n < 0)){
 801                 return;
 802         }
 803
 804         // get the instance
 805         bm = stars_lookup_sun(&Suns[sun_n]);
 806         if(bm == NULL){
 807                 return;
 808         }
 809
 810         // get sun pos
 811         sun_pos = vmd_zero_vector;
 812         sun_pos.xyz.y = 1.0f;
 813         stars_get_sun_pos(sun_n, &sun_pos);
 814
 815         // get the direction
 816         sun_dir = sun_pos;
 817         vm_vec_normalize(&sun_dir);
 818
 819         // if supernova
 820         if(supernova_active()){
 821                 local_scale = 1.0f + (SUPERNOVA_SUN_SCALE * supernova_pct_complete());
 822         }
 823
 824         // draw the sun itself, keep track of how many we drew
 825         gr_set_bitmap(bm->glow_bitmap, GR_ALPHABLEND_FILTER, GR_BITBLT_MODE_NORMAL, 0.5f);
 826         g3_rotate_faraway_vertex(&sun_vex, &sun_pos);
 827 #ifdef MAKE_FS1
 828         // divide by 10 to make normal size
 829         g3_draw_bitmap(&sun_vex, 0, 0.10f * (Suns[sun_n].scale_x / 10) * local_scale, TMAP_FLAG_TEXTURED);
 830 #else
 831         g3_draw_bitmap(&sun_vex, 0, 0.10f * Suns[sun_n].scale_x * local_scale, TMAP_FLAG_TEXTURED);
 832 #endif
 833 }
 834
 835 // draw bitmaps
 836 void stars_draw_bitmaps( int show_bitmaps )
 837 {
 838         int idx;
 839         int star_index;
 840
 841         // if we're in the nebula, don't render any backgrounds
 842         if(The_mission.flags & MISSION_FLAG_FULLNEB){
 843                 return;
 844         }
 845
 846         // detail settings
 847         if(!Detail.planets_suns){
 848                 return;
 849         }
 850
 851         // render all bitmaps
 852         for(idx=0; idx<Num_starfield_bitmaps; idx++){
 853                 // lookup the info index
 854                 star_index = stars_find_bitmap(Starfield_bitmap_instance[idx].filename);
 855                 if(star_index < 0){
 856                         continue;
 857                 }
 858
 859                 // set the bitmap
 860                 if(Fred_running){
 861                         gr_set_bitmap(Starfield_bitmaps[star_index].bitmap, GR_ALPHABLEND_FILTER, GR_BITBLT_MODE_NORMAL, 0.9999f);
 862                         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);
 863                 } else {
 864                         if(Starfield_bitmaps[star_index].xparent){
 865                                 gr_set_bitmap(Starfield_bitmaps[star_index].bitmap);
 866                                 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);
 867                         } else {
 868                                 gr_set_bitmap(Starfield_bitmaps[star_index].bitmap, GR_ALPHABLEND_FILTER, GR_BITBLT_MODE_NORMAL, 0.9999f);
 869                                 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);
 870                         }
 871                 }
 872         }
 873 }
 874
 875 /*
 876 void calculate_bitmap_matrix(starfield_bitmaps *bm, vector *v)
 877 {
 878         vm_vector_2_matrix(&bm->m, v, NULL, NULL);
 879         vm_orthogonalize_matrix(&bm->m);
 880 }
 881
 882 void calculate_bitmap_points(starfield_bitmaps *bm, float bank)
 883 {
 884         int i;
 885         vector fvec, uvec, rvec, tmp;
 886         angles tangles;
 887
 888         vm_orthogonalize_matrix(&bm->m);
 889         if (bank) {
 890                 tangles.p = tangles.h = 0.0f;
 891                 tangles.b = bank;
 892                 vm_rotate_matrix_by_angles(&bm->m, &tangles);
 893         }
 894
 895         fvec = bm->m.fvec;
 896         vm_vec_scale(&fvec, bm->dist );
 897         uvec = bm->m.uvec;
 898         rvec = bm->m.rvec;
 899
 900         vm_vec_sub(&tmp, &fvec, &uvec);
 901         vm_vec_sub(&bm->points[3], &tmp, &rvec);
 902
 903         vm_vec_sub(&tmp, &fvec, &uvec);
 904         vm_vec_add(&bm->points[2], &tmp, &rvec);
 905
 906         vm_vec_add(&tmp, &fvec, &uvec);
 907         vm_vec_add(&bm->points[1], &tmp, &rvec);
 908
 909         vm_vec_add(&tmp, &fvec, &uvec);
 910         vm_vec_sub(&bm->points[0], &tmp, &rvec);
 911
 912         for (i=0; i<4; i++){
 913                 vm_vec_normalize(&bm->points[i]);
 914         }
 915 }
 916 */
 917
 918 extern int Interp_subspace;
 919 extern float Interp_subspace_offset_u;
 920 extern float Interp_subspace_offset_u;
 921 extern float Interp_subspace_offset_v;
 922
 923 float subspace_offset_u = 0.0f;
 924 float subspace_offset_u_inner = 0.0f;
 925 float subspace_offset_v = 0.0f;
 926
 927 float subspace_u_speed = 0.07f;                 // how fast u changes
 928 float subspace_v_speed = 0.05f;                 // how fast v changes
 929
 930 int Subspace_glow_bitmap = -1;
 931
 932 float Subspace_glow_frame = 0.0f;
 933 float Subspace_glow_rate = 1.0f;
 934
 935
 936 //XSTR:OFF
 937 DCF(subspace_set,"Set parameters for subspace effect")
 938 {
 939         if ( Dc_command )       {
 940                 dc_get_arg(ARG_STRING);
 941                 if ( !strcmp( Dc_arg, "u" ))    {
 942                         dc_get_arg(ARG_FLOAT);
 943                         if ( Dc_arg_float < 0.0f )      {
 944                                 Dc_help = 1;
 945                         } else {
 946                                 subspace_u_speed = Dc_arg_float;
 947                         }
 948                 } else if ( !strcmp( Dc_arg, "v" ))     {
 949                         dc_get_arg(ARG_FLOAT);
 950                         if ( Dc_arg_float < 0.0f )      {
 951                                 Dc_help = 1;
 952                         } else {
 953                                 subspace_v_speed = Dc_arg_float;
 954                         }
 955                 } else {
 956                         // print usage, not stats
 957                         Dc_help = 1;
 958                 }
 959         }
 960
 961         if ( Dc_help )  {
 962                 dc_printf( "Usage: subspace keyword\nWhere keyword can be in the following forms:\n" );
 963                 dc_printf( "subspace u X    Where X is how fast u moves.\n", MAX_STARS );
 964                 dc_printf( "subspace v X    Where X is how fast v moves.\n" );
 965                 dc_printf( "\nUse '? subspace' to see current values.\n" );
 966                 Dc_status = 0;  // don't print status if help is printed.  Too messy.
 967         }
 968
 969         if ( Dc_status )        {
 970                 dc_printf( "u: %.2f\n", subspace_u_speed );
 971                 dc_printf( "v: %.2f\n", subspace_v_speed );
 972         }
 973 }
 974 //XSTR:ON
 975
 976 void subspace_render()
 977 {
 978         if ( Subspace_model_inner == -1 )       {
 979                 Subspace_model_inner = model_load( "subspace_small.pof", 0, NULL );
 980                 Assert(Subspace_model_inner>-1);
 981         }
 982
 983         if ( Subspace_model_outer == -1 )       {
 984                 Subspace_model_outer = model_load( "subspace_big.pof", 0, NULL );
 985                 Assert(Subspace_model_outer>-1);
 986         }
 987
 988         if ( Subspace_glow_bitmap == -1 )       {
 989                 Subspace_glow_bitmap = bm_load( NOX("SunGlow01"));
 990                 Assert(Subspace_glow_bitmap>-1);
 991         }
 992
 993         Subspace_glow_frame += flFrametime * 1.0f;
 994
 995         float total_time = i2fl(NOISE_NUM_FRAMES) / 15.0f;
 996
 997         // Sanity checks
 998         if ( Subspace_glow_frame < 0.0f )       Subspace_glow_frame = 0.0f;
 999         if ( Subspace_glow_frame > 100.0f ) Subspace_glow_frame = 0.0f;
1000
1001         while ( Subspace_glow_frame > total_time )      {
1002                 Subspace_glow_frame -= total_time;
1003         }
1004         int framenum = fl2i( (Subspace_glow_frame*NOISE_NUM_FRAMES) / total_time );
1005         if ( framenum < 0 ) framenum = 0;
1006         if ( framenum >= NOISE_NUM_FRAMES ) framenum = NOISE_NUM_FRAMES-1;
1007
1008         subspace_offset_u += flFrametime*subspace_u_speed;
1009         if (subspace_offset_u > 1.0f )  {
1010                 subspace_offset_u -= 1.0f;
1011         }
1012
1013         subspace_offset_u_inner += flFrametime*subspace_u_speed*3.0f;
1014         if (subspace_offset_u > 1.0f )  {
1015                 subspace_offset_u -= 1.0f;
1016         }
1017
1018         subspace_offset_v += flFrametime*subspace_v_speed;
1019         if (subspace_offset_v > 1.0f )  {
1020                 subspace_offset_v -= 1.0f;
1021         }
1022
1023
1024
1025         matrix tmp;
1026         angles angs = { 0.0f, 0.0f, 0.0f };
1027         angs.b = subspace_offset_v * PI2;
1028
1029         vm_angles_2_matrix(&tmp,&angs);
1030
1031         int saved_gr_zbuffering =       gr_zbuffer_get();
1032
1033         gr_zbuffer_set(GR_ZBUFF_NONE);
1034
1035         if ( !D3D_enabled )     {
1036
1037                 int render_flags = MR_NO_LIGHTING | MR_ALWAYS_REDRAW;
1038
1039                 Interp_subspace = 1;
1040                 Interp_subspace_offset_u = 1.0f - subspace_offset_u;
1041                 Interp_subspace_offset_v = 0.0f;
1042
1043                 model_set_thrust( Subspace_model_inner, 1.0f, -1, Subspace_glow_bitmap, Noise[framenum] );
1044                 render_flags |= MR_SHOW_THRUSTERS;
1045                 model_render( Subspace_model_outer, &tmp, &Eye_position, render_flags );        //MR_NO_CORRECT|MR_SHOW_OUTLINE
1046
1047         } else {
1048
1049                 int render_flags = MR_NO_LIGHTING | MR_ALWAYS_REDRAW;
1050
1051                 Interp_subspace = 1;
1052                 Interp_subspace_offset_u = 1.0f - subspace_offset_u;
1053                 Interp_subspace_offset_v = 0.0f;
1054
1055                 model_set_thrust( Subspace_model_inner, 1.0f, -1, Subspace_glow_bitmap, Noise[framenum] );
1056                 render_flags |= MR_SHOW_THRUSTERS;
1057                 model_render( Subspace_model_outer, &tmp, &Eye_position, render_flags );        //MR_NO_CORRECT|MR_SHOW_OUTLINE
1058
1059                 Interp_subspace = 1;
1060                 Interp_subspace_offset_u = 1.0f - subspace_offset_u_inner;
1061                 Interp_subspace_offset_v = 0.0f;
1062
1063                 angs.b = -subspace_offset_v * PI2;
1064
1065                 vm_angles_2_matrix(&tmp,&angs);
1066
1067                 model_set_outline_color(255,255,255);
1068
1069                 model_set_thrust( Subspace_model_inner, 1.0f, -1, Subspace_glow_bitmap, Noise[framenum] );
1070                 render_flags |= MR_SHOW_THRUSTERS;
1071
1072                 model_render( Subspace_model_inner, &tmp, &Eye_position, render_flags  );       //MR_NO_CORRECT|MR_SHOW_OUTLINE
1073         }
1074
1075         Interp_subspace = 0;
1076         gr_zbuffer_set(saved_gr_zbuffering);
1077 }
1078
1079 void stars_draw( int show_stars, int show_suns, int show_nebulas, int show_subspace )
1080 {
1081         int i;
1082         float vdist;
1083
1084
1085         int gr_zbuffering_save = gr_zbuffer_get();
1086         gr_zbuffer_set(GR_ZBUFF_NONE);
1087
1088         if ( show_subspace )    {
1089                 subspace_render();
1090         }
1091
1092
1093         if (Num_stars >= MAX_STARS){
1094                 Num_stars = MAX_STARS;
1095         }
1096
1097 #ifdef TIME_STAR_CODE
1098         fix xt1, xt2;
1099         xt1 = timer_get_fixed_seconds();
1100 #endif
1101
1102         if ( show_nebulas && (Game_detail_flags & DETAIL_FLAG_NEBULAS) && (Neb2_render_mode != NEB2_RENDER_POF) && (Neb2_render_mode != NEB2_RENDER_LAME))      {
1103                 nebula_render();
1104         }
1105
1106         // draw background stuff
1107         if((Neb2_render_mode != NEB2_RENDER_POLY) && (Neb2_render_mode != NEB2_RENDER_LAME) && show_stars){
1108                 // semi-hack, do we don't fog the background
1109                 int neb_save = Neb2_render_mode;
1110                 Neb2_render_mode = NEB2_RENDER_NONE;
1111                 extern void stars_draw_background();
1112                 stars_draw_background();
1113                 Neb2_render_mode = neb_save;
1114         }
1115
1116         if (show_stars && ( Game_detail_flags & DETAIL_FLAG_STARS) && !(The_mission.flags & MISSION_FLAG_FULLNEB) && (supernova_active() < 3))  {
1117                 //Num_stars = 1;
1118
1119                 star *sp;
1120
1121                 if ( !last_stars_filled )       {
1122                         for (sp=Stars,i=0; i<Num_stars; i++, sp++ ) {
1123                                 vertex p2;
1124                                 g3_rotate_faraway_vertex(&p2, &sp->pos);
1125                                 sp->last_star_pos.xyz.x = p2.x;
1126                                 sp->last_star_pos.xyz.y = p2.y;
1127                                 sp->last_star_pos.xyz.z = p2.z;
1128                         }
1129                 }
1130
1131                 int tmp_num_stars;
1132
1133                 tmp_num_stars = (Detail.num_stars*Num_stars)/MAX_DETAIL_LEVEL;
1134                 if (tmp_num_stars < 0 ) {
1135                         tmp_num_stars = 0;
1136                 } else if ( tmp_num_stars > Num_stars ) {
1137                         tmp_num_stars = Num_stars;
1138                 }
1139
1140                 for (sp=Stars,i=0; i<tmp_num_stars; i++, sp++ ) {
1141                         vertex p1, p2;
1142                         int can_draw = 1;
1143
1144                         memset(&p1, 0, sizeof(vertex));
1145
1146                         // This makes a star look "proper" by not translating the
1147                         // point around the viewer's eye before rotation.  In other
1148                         // words, when the ship translates, the stars do not change.
1149
1150                         g3_rotate_faraway_vertex(&p2, &sp->pos);
1151                         if ( p2.codes ) {
1152                                 can_draw = 0;
1153                         } else {
1154                                 g3_project_vertex(&p2);
1155                                 if ( p2.flags & PF_OVERFLOW )   {
1156                                         can_draw = 0;
1157                                 }
1158                         }
1159
1160                         float dist = 0.0f;
1161
1162                         if ( can_draw && (Star_flags & (STAR_FLAG_TAIL|STAR_FLAG_DIM)) )        {
1163
1164                                 dist = vm_vec_dist_quick( &sp->last_star_pos, (vector *)&p2.x );
1165
1166                                 float ratio;
1167                                 if ( dist > Star_max_length )   {
1168                                         ratio = Star_max_length / dist;
1169                                         dist = Star_max_length;
1170                                 } else {
1171                                         ratio = 1.0f;
1172                                 }
1173                                 ratio *= Star_amount;
1174
1175                                 p1.x = p2.x + (sp->last_star_pos.xyz.x-p2.x)*ratio;
1176                                 p1.y = p2.y + (sp->last_star_pos.xyz.y-p2.y)*ratio;
1177                                 p1.z = p2.z + (sp->last_star_pos.xyz.z-p2.z)*ratio;
1178
1179                                 p1.flags = 0;   // not projected
1180                                 g3_code_vertex( &p1 );
1181
1182                                 if ( p1.codes ) {
1183                                         can_draw = 0;
1184                                 } else {
1185                                         g3_project_vertex(&p1);
1186                                         if ( p1.flags & PF_OVERFLOW )   {
1187                                                 can_draw = 0;
1188                                         }
1189                                 }
1190                         }
1191
1192                         sp->last_star_pos.xyz.x = p2.x;
1193                         sp->last_star_pos.xyz.y = p2.y;
1194                         sp->last_star_pos.xyz.z = p2.z;
1195
1196                         if ( !can_draw )        continue;
1197
1198                         int color;
1199
1200                         if ( Star_flags & STAR_FLAG_DIM )       {
1201
1202                                 float colorf = 255.0f - dist*Star_dim;
1203
1204                                 if ( colorf < Star_cap )
1205                                         colorf = Star_cap;
1206
1207                                 color = (fl2i(colorf)*(i&7))/256;
1208
1209                         } else {
1210                                 color = i & 7;
1211                         }
1212
1213                         if ( (Star_flags & STAR_FLAG_ANTIALIAS) || (D3D_enabled) )      {
1214                                 gr_set_color_fast( &star_aacolors[color] );
1215
1216                                 // if the two points are the same, fudge it, since some D3D cards (G200 and G400) are lame.
1217                                 if( (fl2i(p1.sx) == fl2i(p2.sx)) && (fl2i(p1.sy) == fl2i(p2.sy)) ){
1218                                         p1.sx += 1.0f;
1219                                 }
1220                                 gr_aaline(&p1,&p2);
1221                         } else {
1222                                 // use alphablended line so that dark stars don't look bad on top of nebulas
1223                                 gr_set_color_fast( &star_aacolors[color] );
1224                                 if ( Star_flags & STAR_FLAG_TAIL )      {
1225                                         gr_line(fl2i(p1.sx),fl2i(p1.sy),fl2i(p2.sx),fl2i(p2.sy));
1226                                 } else {
1227                                         gr_pixel( fl2i(p2.sx),fl2i(p2.sy) );
1228                                 }
1229                         }
1230                 }
1231         }
1232
1233         last_stars_filled = 1;
1234
1235 #ifdef TIME_STAR_CODE
1236         xt2 = timer_get_fixed_seconds();
1237         mprintf(( "Stars: %d\n", xt2-xt1 ));
1238 #endif
1239
1240
1241         if ( (Game_detail_flags & DETAIL_FLAG_MOTION) && (!Fred_running) && (supernova_active() < 3) )  {
1242
1243                 gr_set_color( 0, 0, 0 );
1244
1245                 // turn off fogging
1246                 if(The_mission.flags & MISSION_FLAG_FULLNEB){
1247                         gr_fog_set(GR_FOGMODE_NONE, 0, 0, 0);
1248                 }
1249
1250                 old_debris * d = odebris;
1251                 for (i=0; i<MAX_DEBRIS; i++, d++ ) {
1252                         vertex p;
1253
1254                         if (!d->active) {
1255                                 d->pos.xyz.x = f2fl(myrand() - RAND_MAX/2);
1256                                 d->pos.xyz.y = f2fl(myrand() - RAND_MAX/2);
1257                                 d->pos.xyz.z = f2fl(myrand() - RAND_MAX/2);
1258
1259                                 vm_vec_normalize(&d->pos);
1260
1261                                 vm_vec_scale(&d->pos, MAX_DIST);
1262                                 vm_vec_add2(&d->pos, &Eye_position );
1263 //                              vm_vec_add2(&d->pos, &Player_obj->pos );
1264                                 d->active = 1;
1265                                 d->vclip = i % MAX_DEBRIS_VCLIPS;       //rand()
1266
1267                                 // if we're in full neb mode
1268                                 if((The_mission.flags & MISSION_FLAG_FULLNEB) && (Neb2_render_mode != NEB2_RENDER_NONE)){
1269                                         d->size = i2fl(myrand() % 4)*BASE_SIZE_NEB;
1270                                 } else {
1271                                         d->size = i2fl(myrand() % 4)*BASE_SIZE;
1272                                 }
1273
1274                                 vm_vec_sub( &d->last_pos, &d->pos, &Eye_position );
1275                         }
1276
1277                         if ( reload_old_debris )        {
1278                                 vm_vec_sub( &d->last_pos, &d->pos, &Eye_position );
1279                         }
1280
1281                         g3_rotate_vertex(&p, &d->pos);
1282
1283                         if (p.codes == 0) {
1284                                 int frame = Missiontime / (DEBRIS_ROT_MIN + (i % DEBRIS_ROT_RANGE) * DEBRIS_ROT_RANGE_SCALER);
1285                                 frame %= debris_vclips[d->vclip].nframes;
1286
1287                                 if((The_mission.flags & MISSION_FLAG_FULLNEB) && (Neb2_render_mode != NEB2_RENDER_NONE)){
1288                                         gr_set_bitmap( debris_vclips[d->vclip].bm + frame, GR_ALPHABLEND_FILTER, GR_BITBLT_MODE_NORMAL, 0.3f);
1289                                 } else {
1290                                         gr_set_bitmap( debris_vclips[d->vclip].bm + frame );
1291                                 }
1292
1293                                 vector tmp;
1294                                 vm_vec_add( &tmp, &d->last_pos, &Eye_position );
1295                                 g3_draw_laser( &d->pos,d->size,&tmp,d->size, TMAP_FLAG_TEXTURED|TMAP_FLAG_XPARENT, 25.0f );
1296                         }
1297
1298                         vm_vec_sub( &d->last_pos, &d->pos, &Eye_position );
1299
1300                         vdist = vm_vec_mag_quick(&d->last_pos);
1301
1302                         if (vdist > MAX_DIST_RANGE)
1303                                 d->active = 0;
1304                         else if (vdist < MIN_DIST_RANGE)
1305                                 d->active = 0;
1306
1307         //              vector tmp;
1308         //              vm_vec_sub( &tmp, &d->pos, &Player_obj->pos );
1309         //              vdist = vm_vec_dot( &tmp, &Player_obj->orient.fvec );
1310         //              if ( vdist < 0.0f )
1311         //                      d->active = 0;
1312
1313                 }
1314
1315                 reload_old_debris = 0;
1316         }
1317
1318
1319         stars_draw_sun( show_suns );
1320         stars_draw_bitmaps( show_suns );
1321
1322         gr_zbuffer_set( gr_zbuffering_save );
1323 }
1324
1325 void stars_page_in()
1326 {
1327         int i, j;
1328
1329         // Initialize the subspace stuff
1330
1331         if ( Game_subspace_effect )     {
1332
1333                 Subspace_model_inner = model_load( "subspace_small.pof", 0, NULL );
1334                 Assert(Subspace_model_inner>-1);
1335                 Subspace_model_outer = model_load( "subspace_big.pof", 0, NULL );
1336                 Assert(Subspace_model_outer>-1);
1337
1338                 polymodel *pm;
1339
1340                 pm = model_get(Subspace_model_inner);
1341
1342                 nprintf(( "Paging", "Paging in textures for subspace effect.\n" ));
1343
1344                 for (j=0; j<pm->n_textures; j++ )       {
1345                         int bitmap_num = pm->original_textures[j];
1346
1347                         if ( bitmap_num > -1 )  {
1348                                 bm_page_in_texture( bitmap_num );
1349                         }
1350                 }
1351
1352                 pm = model_get(Subspace_model_outer);
1353
1354                 nprintf(( "Paging", "Paging in textures for subspace effect.\n" ));
1355
1356                 for (j=0; j<pm->n_textures; j++ )       {
1357                         int bitmap_num = pm->original_textures[j];
1358
1359                         if ( bitmap_num > -1 )  {
1360                                 bm_page_in_texture( bitmap_num );
1361                         }
1362                 }
1363         } else {
1364                 Subspace_model_inner = -1;
1365                 Subspace_model_outer = -1;
1366         }
1367
1368         Subspace_glow_bitmap = bm_load( NOX("SunGlow01"));
1369         bm_page_in_xparent_texture(Subspace_glow_bitmap);
1370
1371         // page in starfield bitmaps
1372         int idx, t;
1373         idx = 0;
1374         while((idx < MAX_STARFIELD_BITMAPS) && (Starfield_bitmaps[idx].bitmap != -1)){
1375                 // make sure it's used in this mission before loading
1376                 for (t=0; t<Num_starfield_bitmaps; t++) {
1377                         if (!stricmp(Starfield_bitmaps[idx].filename, Starfield_bitmap_instance[t].filename)) {
1378                                 if(Starfield_bitmaps[idx].xparent){
1379                                         bm_page_in_xparent_texture(Starfield_bitmaps[idx].bitmap);
1380                                 } else {
1381                                         bm_page_in_texture(Starfield_bitmaps[idx].bitmap);
1382                                 }
1383                         }
1384                 }
1385
1386                 // next;
1387                 idx++;
1388         }
1389
1390         // sun bitmaps and glows
1391         idx = 0;
1392         while((idx < MAX_STARFIELD_BITMAPS) && (Sun_bitmaps[idx].bitmap != -1) && (Sun_bitmaps[idx].glow_bitmap != -1)){
1393                 // make sure it's used in this mission before loading
1394                 for (t=0; t<Num_suns; t++) {
1395                         if (!stricmp(Sun_bitmaps[idx].filename, Suns[t].filename)) {
1396                                 bm_page_in_texture(Sun_bitmaps[idx].bitmap);
1397                                 bm_page_in_texture(Sun_bitmaps[idx].glow_bitmap);
1398                         }
1399                 }
1400
1401                 // next
1402                 idx++;
1403         }
1404
1405         for (i=0; i<MAX_DEBRIS_VCLIPS; i++ )    {
1406                 for (j=0; j<debris_vclips[i].nframes; j++ )     {
1407                         bm_page_in_xparent_texture(debris_vclips[i].bm + j);
1408                 }
1409         }
1410 }
1411
1412 // background nebula models and planets
1413 void stars_draw_background()
1414 {
1415         if((Nmodel_num < 0) || (Nmodel_bitmap < 0)){
1416                 return;
1417         }
1418
1419         // draw the model at the player's eye wif no z-buffering
1420         model_set_alpha(1.0f);
1421         model_set_forced_texture(Nmodel_bitmap);
1422         model_render(Nmodel_num, &vmd_identity_matrix, &Eye_position, MR_NO_ZBUFFER | MR_NO_CULL | MR_ALL_XPARENT | MR_NO_LIGHTING | MR_FORCE_TEXTURE);
1423         model_set_forced_texture(-1);
1424 }
1425
1426 // call this to set a specific model as the background model
1427 void stars_set_background_model(char *model_name, char *texture_name)
1428 {
1429         Nmodel_num = model_load(model_name, 0, NULL);
1430         Nmodel_bitmap = bm_load(texture_name);
1431 }
1432
1433 // lookup a starfield bitmap, return index or -1 on fail
1434 int stars_find_bitmap(char *name)
1435 {
1436         int idx;
1437
1438         // lookup
1439         for(idx=0; idx<MAX_STARFIELD_BITMAPS; idx++){
1440                 if(!strcmp(name, Starfield_bitmaps[idx].filename)){
1441                         return idx;
1442                 }
1443         }
1444
1445         // not found
1446         return -1;
1447 }
1448
1449 // lookup a sun by bitmap filename, return index or -1 on fail
1450 int stars_find_sun(char *name)
1451 {
1452         int idx;
1453
1454         // lookup
1455         for(idx=0; idx<MAX_STARFIELD_BITMAPS; idx++){
1456                 if(!strcmp(name, Sun_bitmaps[idx].filename)){
1457                         return idx;
1458                 }
1459         }
1460
1461         // not found
1462         return -1;
1463 }
1464