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