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