1 /*
2 Copyright (C) 1996-1997 Id Software, Inc.
3
4 This program is free software; you can redistribute it and/or
5 modify it under the terms of the GNU General Public License
6 as published by the Free Software Foundation; either version 2
7 of the License, or (at your option) any later version.
8
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
12
13 See the GNU General Public License for more details.
14
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
18
19 */
20
21 #include "quakedef.h"
22 #include "r_local.h"
23
24 #define MAX_PARTICLES 2048 // default max # of particles at one
25 // time
26 #define ABSOLUTE_MIN_PARTICLES 512 // no fewer than this no matter what's
27 // on the command line
28
29 int ramp1[8] = {0x6f, 0x6d, 0x6b, 0x69, 0x67, 0x65, 0x63, 0x61};
30 int ramp2[8] = {0x6f, 0x6e, 0x6d, 0x6c, 0x6b, 0x6a, 0x68, 0x66};
31 int ramp3[8] = {0x6d, 0x6b, 6, 5, 4, 3};
32
33 particle_t *active_particles, *free_particles;
34
35 particle_t *particles;
36 int r_numparticles;
37
38 vec3_t r_pright, r_pup, r_ppn;
39
40
41 /*
42 ===============
43 R_InitParticles
44 ===============
45 */
R_InitParticles(void)46 void R_InitParticles (void)
47 {
48 int i;
49
50 i = COM_CheckParm ("-particles");
51
52 if (i)
53 {
54 r_numparticles = (int)(Q_atoi(com_argv[i+1]));
55 if (r_numparticles < ABSOLUTE_MIN_PARTICLES)
56 r_numparticles = ABSOLUTE_MIN_PARTICLES;
57 }
58 else
59 {
60 r_numparticles = MAX_PARTICLES;
61 }
62
63 particles = (particle_t *)
64 Hunk_AllocName (r_numparticles * sizeof(particle_t), "particles");
65 }
66
67
68 /*
69 ===============
70 R_ClearParticles
71 ===============
72 */
R_ClearParticles(void)73 void R_ClearParticles (void)
74 {
75 int i;
76
77 free_particles = &particles[0];
78 active_particles = NULL;
79
80 for (i=0 ;i<r_numparticles ; i++)
81 particles[i].next = &particles[i+1];
82 particles[r_numparticles-1].next = NULL;
83 }
84
85
R_ReadPointFile_f(void)86 void R_ReadPointFile_f (void)
87 {
88 FILE *f;
89 vec3_t org;
90 int r;
91 int c;
92 particle_t *p;
93 char name[MAX_OSPATH];
94
95 // FIXME sprintf (name,"maps/%s.pts", sv.name);
96
97 COM_FOpenFile (name, &f);
98 if (!f)
99 {
100 Con_Printf ("couldn't open %s\n", name);
101 return;
102 }
103
104 Con_Printf ("Reading %s...\n", name);
105 c = 0;
106 for ( ;; )
107 {
108 r = fscanf (f,"%f %f %f\n", &org[0], &org[1], &org[2]);
109 if (r != 3)
110 break;
111 c++;
112
113 if (!free_particles)
114 {
115 Con_Printf ("Not enough free particles\n");
116 break;
117 }
118 p = free_particles;
119 free_particles = p->next;
120 p->next = active_particles;
121 active_particles = p;
122
123 p->die = 99999;
124 p->color = (-c)&15;
125 p->type = pt_static;
126 VectorCopy (vec3_origin, p->vel);
127 VectorCopy (org, p->org);
128 }
129
130 fclose (f);
131 Con_Printf ("%i points read\n", c);
132 }
133
134 /*
135 ===============
136 R_ParticleExplosion
137
138 ===============
139 */
R_ParticleExplosion(vec3_t org)140 void R_ParticleExplosion (vec3_t org)
141 {
142 int i, j;
143 particle_t *p;
144
145 for (i=0 ; i<1024 ; i++)
146 {
147 if (!free_particles)
148 return;
149 p = free_particles;
150 free_particles = p->next;
151 p->next = active_particles;
152 active_particles = p;
153
154 p->die = cl.time + 5;
155 p->color = ramp1[0];
156 p->ramp = rand()&3;
157 if (i & 1)
158 {
159 p->type = pt_explode;
160 for (j=0 ; j<3 ; j++)
161 {
162 p->org[j] = org[j] + ((rand()%32)-16);
163 p->vel[j] = (rand()%512)-256;
164 }
165 }
166 else
167 {
168 p->type = pt_explode2;
169 for (j=0 ; j<3 ; j++)
170 {
171 p->org[j] = org[j] + ((rand()%32)-16);
172 p->vel[j] = (rand()%512)-256;
173 }
174 }
175 }
176 }
177
178 /*
179 ===============
180 R_BlobExplosion
181
182 ===============
183 */
R_BlobExplosion(vec3_t org)184 void R_BlobExplosion (vec3_t org)
185 {
186 int i, j;
187 particle_t *p;
188
189 for (i=0 ; i<1024 ; i++)
190 {
191 if (!free_particles)
192 return;
193 p = free_particles;
194 free_particles = p->next;
195 p->next = active_particles;
196 active_particles = p;
197
198 p->die = cl.time + 1 + (rand()&8)*0.05;
199
200 if (i & 1)
201 {
202 p->type = pt_blob;
203 p->color = 66 + rand()%6;
204 for (j=0 ; j<3 ; j++)
205 {
206 p->org[j] = org[j] + ((rand()%32)-16);
207 p->vel[j] = (rand()%512)-256;
208 }
209 }
210 else
211 {
212 p->type = pt_blob2;
213 p->color = 150 + rand()%6;
214 for (j=0 ; j<3 ; j++)
215 {
216 p->org[j] = org[j] + ((rand()%32)-16);
217 p->vel[j] = (rand()%512)-256;
218 }
219 }
220 }
221 }
222
223 /*
224 ===============
225 R_RunParticleEffect
226
227 ===============
228 */
R_RunParticleEffect(vec3_t org,vec3_t dir,int color,int count)229 void R_RunParticleEffect (vec3_t org, vec3_t dir, int color, int count)
230 {
231 int i, j;
232 particle_t *p;
233 int scale;
234
235 if (count > 130)
236 scale = 3;
237 else if (count > 20)
238 scale = 2;
239 else
240 scale = 1;
241
242 for (i=0 ; i<count ; i++)
243 {
244 if (!free_particles)
245 return;
246 p = free_particles;
247 free_particles = p->next;
248 p->next = active_particles;
249 active_particles = p;
250
251 p->die = cl.time + 0.1*(rand()%5);
252 p->color = (color&~7) + (rand()&7);
253 p->type = pt_grav;
254 for (j=0 ; j<3 ; j++)
255 {
256 p->org[j] = org[j] + scale*((rand()&15)-8);
257 p->vel[j] = dir[j]*15;// + (rand()%300)-150;
258 }
259 }
260 }
261
262
263 /*
264 ===============
265 R_LavaSplash
266
267 ===============
268 */
R_LavaSplash(vec3_t org)269 void R_LavaSplash (vec3_t org)
270 {
271 int i, j, k;
272 particle_t *p;
273 float vel;
274 vec3_t dir;
275
276 for (i=-16 ; i<16 ; i++)
277 for (j=-16 ; j<16 ; j++)
278 for (k=0 ; k<1 ; k++)
279 {
280 if (!free_particles)
281 return;
282 p = free_particles;
283 free_particles = p->next;
284 p->next = active_particles;
285 active_particles = p;
286
287 p->die = cl.time + 2 + (rand()&31) * 0.02;
288 p->color = 224 + (rand()&7);
289 p->type = pt_grav;
290
291 dir[0] = j*8 + (rand()&7);
292 dir[1] = i*8 + (rand()&7);
293 dir[2] = 256;
294
295 p->org[0] = org[0] + dir[0];
296 p->org[1] = org[1] + dir[1];
297 p->org[2] = org[2] + (rand()&63);
298
299 VectorNormalize (dir);
300 vel = 50 + (rand()&63);
301 VectorScale (dir, vel, p->vel);
302 }
303 }
304
305 /*
306 ===============
307 R_TeleportSplash
308
309 ===============
310 */
R_TeleportSplash(vec3_t org)311 void R_TeleportSplash (vec3_t org)
312 {
313 int i, j, k;
314 particle_t *p;
315 float vel;
316 vec3_t dir;
317
318 for (i=-16 ; i<16 ; i+=4)
319 for (j=-16 ; j<16 ; j+=4)
320 for (k=-24 ; k<32 ; k+=4)
321 {
322 if (!free_particles)
323 return;
324 p = free_particles;
325 free_particles = p->next;
326 p->next = active_particles;
327 active_particles = p;
328
329 p->die = cl.time + 0.2 + (rand()&7) * 0.02;
330 p->color = 7 + (rand()&7);
331 p->type = pt_grav;
332
333 dir[0] = j*8;
334 dir[1] = i*8;
335 dir[2] = k*8;
336
337 p->org[0] = org[0] + i + (rand()&3);
338 p->org[1] = org[1] + j + (rand()&3);
339 p->org[2] = org[2] + k + (rand()&3);
340
341 VectorNormalize (dir);
342 vel = 50 + (rand()&63);
343 VectorScale (dir, vel, p->vel);
344 }
345 }
346
R_RocketTrail(vec3_t start,vec3_t end,int type)347 void R_RocketTrail (vec3_t start, vec3_t end, int type)
348 {
349 vec3_t vec;
350 float len;
351 int j;
352 particle_t *p;
353
354 VectorSubtract (end, start, vec);
355 len = VectorNormalize (vec);
356 while (len > 0)
357 {
358 len -= 3;
359
360 if (!free_particles)
361 return;
362 p = free_particles;
363 free_particles = p->next;
364 p->next = active_particles;
365 active_particles = p;
366
367 VectorCopy (vec3_origin, p->vel);
368 p->die = cl.time + 2;
369
370 if (type == 4)
371 { // slight blood
372 p->type = pt_slowgrav;
373 p->color = 67 + (rand()&3);
374 for (j=0 ; j<3 ; j++)
375 p->org[j] = start[j] + ((rand()%6)-3);
376 len -= 3;
377 }
378 else if (type == 2)
379 { // blood
380 p->type = pt_slowgrav;
381 p->color = 67 + (rand()&3);
382 for (j=0 ; j<3 ; j++)
383 p->org[j] = start[j] + ((rand()%6)-3);
384 }
385 else if (type == 6)
386 { // voor trail
387 p->color = 9*16 + 8 + (rand()&3);
388 p->type = pt_static;
389 p->die = cl.time + 0.3;
390 for (j=0 ; j<3 ; j++)
391 p->org[j] = start[j] + ((rand()&15)-8);
392 }
393 else if (type == 1)
394 { // smoke smoke
395 p->ramp = (rand()&3) + 2;
396 p->color = ramp3[(int)p->ramp];
397 p->type = pt_fire;
398 for (j=0 ; j<3 ; j++)
399 p->org[j] = start[j] + ((rand()%6)-3);
400 }
401 else if (type == 0)
402 { // rocket trail
403 p->ramp = (rand()&3);
404 p->color = ramp3[(int)p->ramp];
405 p->type = pt_fire;
406 for (j=0 ; j<3 ; j++)
407 p->org[j] = start[j] + ((rand()%6)-3);
408 }
409 else if (type == 3 || type == 5)
410 { // tracer
411 static int tracercount;
412
413 p->die = cl.time + 0.5;
414 p->type = pt_static;
415 if (type == 3)
416 p->color = 52 + ((tracercount&4)<<1);
417 else
418 p->color = 230 + ((tracercount&4)<<1);
419
420 tracercount++;
421
422 VectorCopy (start, p->org);
423 if (tracercount & 1)
424 {
425 p->vel[0] = 30*vec[1];
426 p->vel[1] = 30*-vec[0];
427 }
428 else
429 {
430 p->vel[0] = 30*-vec[1];
431 p->vel[1] = 30*vec[0];
432 }
433
434 }
435
436
437 VectorAdd (start, vec, start);
438 }
439 }
440
441
442 /*
443 ===============
444 R_DrawParticles
445 ===============
446 */
R_DrawParticles(void)447 void R_DrawParticles (void)
448 {
449 particle_t *p, *kill;
450 float grav;
451 int i;
452 float time2, time3;
453 float time1;
454 float dvel;
455 float frametime;
456 #ifdef GLQUAKE
457 unsigned char *at;
458 unsigned char theAlpha;
459 vec3_t up, right;
460 float scale;
461 qboolean alphaTestEnabled;
462
463 GL_Bind(particletexture);
464 #ifdef USE_OPENGLES
465 // !!! Implement this
466 alphaTestEnabled = false;
467 #else
468 alphaTestEnabled = glIsEnabled(GL_ALPHA_TEST);
469 #endif
470
471 if (alphaTestEnabled)
472 glDisable(GL_ALPHA_TEST);
473 glEnable (GL_BLEND);
474 glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
475
476 #ifdef USE_OPENGLES
477 // !!! Implement this
478 #else
479 glBegin (GL_TRIANGLES);
480 #endif
481
482 VectorScale (vup, 1.5, up);
483 VectorScale (vright, 1.5, right);
484 #else
485 D_StartParticles ();
486
487 VectorScale (vright, xscaleshrink, r_pright);
488 VectorScale (vup, yscaleshrink, r_pup);
489 VectorCopy (vpn, r_ppn);
490 #endif
491
492 frametime = host_frametime;
493 time3 = frametime * 15;
494 time2 = frametime * 10; // 15;
495 time1 = frametime * 5;
496 grav = frametime * 800 * 0.05;
497 dvel = 4*frametime;
498
499 for ( ;; )
500 {
501 kill = active_particles;
502 if (kill && kill->die < cl.time)
503 {
504 active_particles = kill->next;
505 kill->next = free_particles;
506 free_particles = kill;
507 continue;
508 }
509 break;
510 }
511
512 for (p=active_particles ; p ; p=p->next)
513 {
514 for ( ;; )
515 {
516 kill = p->next;
517 if (kill && kill->die < cl.time)
518 {
519 p->next = kill->next;
520 kill->next = free_particles;
521 free_particles = kill;
522 continue;
523 }
524 break;
525 }
526
527 #ifdef GLQUAKE
528 // hack a scale up to keep particles from disapearing
529 scale = (p->org[0] - r_origin[0])*vpn[0] + (p->org[1] - r_origin[1])*vpn[1]
530 + (p->org[2] - r_origin[2])*vpn[2];
531 if (scale < 20)
532 scale = 1;
533 else
534 scale = 1 + scale * 0.004;
535 at = (byte *)&d_8to24table[(int)p->color];
536 if (p->type==pt_fire)
537 theAlpha = 255*(6-p->ramp)/6;
538 // theAlpha = 192;
539 // else if (p->type==pt_explode || p->type==pt_explode2)
540 // theAlpha = 255*(8-p->ramp)/8;
541 else
542 theAlpha = 255;
543
544 #ifdef USE_OPENGLES
545 // !!! Implement this
546 #else
547 glColor4ub (*at, *(at+1), *(at+2), theAlpha);
548 // glColor3ubv (at);
549 // glColor3ubv ((byte *)&d_8to24table[(int)p->color]);
550 glTexCoord2f (0,0);
551 glVertex3fv (p->org);
552 glTexCoord2f (1,0);
553 glVertex3f (p->org[0] + up[0]*scale, p->org[1] + up[1]*scale, p->org[2] + up[2]*scale);
554 glTexCoord2f (0,1);
555 glVertex3f (p->org[0] + right[0]*scale, p->org[1] + right[1]*scale, p->org[2] + right[2]*scale);
556 #endif
557
558 #else
559 D_DrawParticle (p);
560 #endif
561
562 p->org[0] += p->vel[0]*frametime;
563 p->org[1] += p->vel[1]*frametime;
564 p->org[2] += p->vel[2]*frametime;
565
566 switch (p->type)
567 {
568 case pt_static:
569 break;
570 case pt_fire:
571 p->ramp += time1;
572 if (p->ramp >= 6)
573 p->die = -1;
574 else
575 p->color = ramp3[(int)p->ramp];
576 p->vel[2] += grav;
577 break;
578
579 case pt_explode:
580 p->ramp += time2;
581 if (p->ramp >=8)
582 p->die = -1;
583 else
584 p->color = ramp1[(int)p->ramp];
585 for (i=0 ; i<3 ; i++)
586 p->vel[i] += p->vel[i]*dvel;
587 p->vel[2] -= grav;
588 break;
589
590 case pt_explode2:
591 p->ramp += time3;
592 if (p->ramp >=8)
593 p->die = -1;
594 else
595 p->color = ramp2[(int)p->ramp];
596 for (i=0 ; i<3 ; i++)
597 p->vel[i] -= p->vel[i]*frametime;
598 p->vel[2] -= grav;
599 break;
600
601 case pt_blob:
602 for (i=0 ; i<3 ; i++)
603 p->vel[i] += p->vel[i]*dvel;
604 p->vel[2] -= grav;
605 break;
606
607 case pt_blob2:
608 for (i=0 ; i<2 ; i++)
609 p->vel[i] -= p->vel[i]*dvel;
610 p->vel[2] -= grav;
611 break;
612
613 case pt_slowgrav:
614 case pt_grav:
615 p->vel[2] -= grav;
616 break;
617 }
618 }
619
620 #ifdef GLQUAKE
621 #ifdef USE_OPENGLES
622 // !!! Implement this
623 #else
624 glEnd ();
625 #endif
626 glDisable (GL_BLEND);
627 if (alphaTestEnabled)
628 glEnable(GL_ALPHA_TEST);
629 glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
630 #else
631 D_EndParticles ();
632 #endif
633 }
634
635