cl_particles.c

   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 "cl_collision.h"
  23
  24 #define MAX_PARTICLES                   8192    // default max # of particles at one time
  25 #define ABSOLUTE_MIN_PARTICLES  512             // no fewer than this no matter what's on the command line
  26
  27 typedef enum
  28 {
  29         pt_static, pt_rain, pt_bubble, pt_blood
  30 }
  31 ptype_t;
  32
  33 #define PARTICLE_INVALID 0
  34 #define PARTICLE_BILLBOARD 1
  35 #define PARTICLE_BEAM 2
  36 #define PARTICLE_ORIENTED_DOUBLESIDED 3
  37
  38 #define P_TEXNUM_FIRSTBIT 0
  39 #define P_TEXNUM_BITS 6
  40 #define P_ORIENTATION_FIRSTBIT (P_TEXNUM_FIRSTBIT + P_TEXNUM_BITS)
  41 #define P_ORIENTATION_BITS 2
  42 #define P_FLAGS_FIRSTBIT (P_ORIENTATION_FIRSTBIT + P_ORIENTATION_BITS)
  43 //#define P_DYNLIGHT (1 << (P_FLAGS_FIRSTBIT + 0))
  44 #define P_ADDITIVE (1 << (P_FLAGS_FIRSTBIT + 1))
  45
  46 typedef struct particle_s
  47 {
  48         ptype_t         type;
  49         unsigned int    flags; // dynamically lit, orientation, additive blending, texnum
  50         vec3_t          org;
  51         vec3_t          vel;
  52         float           die;
  53         float           scalex;
  54         float           scaley;
  55         float           alpha; // 0-255
  56         float           alphafade; // how much alpha reduces per second
  57         float           time2; // used for various things (snow fluttering, for example)
  58         float           bounce; // how much bounce-back from a surface the particle hits (0 = no physics, 1 = stop and slide, 2 = keep bouncing forever, 1.5 is typical)
  59         float           gravity; // how much gravity affects this particle (1.0 = normal gravity, 0.0 = none)
  60         vec3_t          oldorg;
  61         vec3_t          vel2; // used for snow fluttering (base velocity, wind for instance)
  62         float           friction; // how much air friction affects this object (objects with a low mass/size ratio tend to get more air friction)
  63         float           pressure; // if non-zero, apply pressure to other particles
  64         qbyte           color[4];
  65 }
  66 particle_t;
  67
  68 static int particlepalette[256] =
  69 {
  70         0x000000,0x0f0f0f,0x1f1f1f,0x2f2f2f,0x3f3f3f,0x4b4b4b,0x5b5b5b,0x6b6b6b,
  71         0x7b7b7b,0x8b8b8b,0x9b9b9b,0xababab,0xbbbbbb,0xcbcbcb,0xdbdbdb,0xebebeb,
  72         0x0f0b07,0x170f0b,0x1f170b,0x271b0f,0x2f2313,0x372b17,0x3f2f17,0x4b371b,
  73         0x533b1b,0x5b431f,0x634b1f,0x6b531f,0x73571f,0x7b5f23,0x836723,0x8f6f23,
  74         0x0b0b0f,0x13131b,0x1b1b27,0x272733,0x2f2f3f,0x37374b,0x3f3f57,0x474767,
  75         0x4f4f73,0x5b5b7f,0x63638b,0x6b6b97,0x7373a3,0x7b7baf,0x8383bb,0x8b8bcb,
  76         0x000000,0x070700,0x0b0b00,0x131300,0x1b1b00,0x232300,0x2b2b07,0x2f2f07,
  77         0x373707,0x3f3f07,0x474707,0x4b4b0b,0x53530b,0x5b5b0b,0x63630b,0x6b6b0f,
  78         0x070000,0x0f0000,0x170000,0x1f0000,0x270000,0x2f0000,0x370000,0x3f0000,
  79         0x470000,0x4f0000,0x570000,0x5f0000,0x670000,0x6f0000,0x770000,0x7f0000,
  80         0x131300,0x1b1b00,0x232300,0x2f2b00,0x372f00,0x433700,0x4b3b07,0x574307,
  81         0x5f4707,0x6b4b0b,0x77530f,0x835713,0x8b5b13,0x975f1b,0xa3631f,0xaf6723,
  82         0x231307,0x2f170b,0x3b1f0f,0x4b2313,0x572b17,0x632f1f,0x733723,0x7f3b2b,
  83         0x8f4333,0x9f4f33,0xaf632f,0xbf772f,0xcf8f2b,0xdfab27,0xefcb1f,0xfff31b,
  84         0x0b0700,0x1b1300,0x2b230f,0x372b13,0x47331b,0x533723,0x633f2b,0x6f4733,
  85         0x7f533f,0x8b5f47,0x9b6b53,0xa77b5f,0xb7876b,0xc3937b,0xd3a38b,0xe3b397,
  86         0xab8ba3,0x9f7f97,0x937387,0x8b677b,0x7f5b6f,0x775363,0x6b4b57,0x5f3f4b,
  87         0x573743,0x4b2f37,0x43272f,0x371f23,0x2b171b,0x231313,0x170b0b,0x0f0707,
  88         0xbb739f,0xaf6b8f,0xa35f83,0x975777,0x8b4f6b,0x7f4b5f,0x734353,0x6b3b4b,
  89         0x5f333f,0x532b37,0x47232b,0x3b1f23,0x2f171b,0x231313,0x170b0b,0x0f0707,
  90         0xdbc3bb,0xcbb3a7,0xbfa39b,0xaf978b,0xa3877b,0x977b6f,0x876f5f,0x7b6353,
  91         0x6b5747,0x5f4b3b,0x533f33,0x433327,0x372b1f,0x271f17,0x1b130f,0x0f0b07,
  92         0x6f837b,0x677b6f,0x5f7367,0x576b5f,0x4f6357,0x475b4f,0x3f5347,0x374b3f,
  93         0x2f4337,0x2b3b2f,0x233327,0x1f2b1f,0x172317,0x0f1b13,0x0b130b,0x070b07,
  94         0xfff31b,0xefdf17,0xdbcb13,0xcbb70f,0xbba70f,0xab970b,0x9b8307,0x8b7307,
  95         0x7b6307,0x6b5300,0x5b4700,0x4b3700,0x3b2b00,0x2b1f00,0x1b0f00,0x0b0700,
  96         0x0000ff,0x0b0bef,0x1313df,0x1b1bcf,0x2323bf,0x2b2baf,0x2f2f9f,0x2f2f8f,
  97         0x2f2f7f,0x2f2f6f,0x2f2f5f,0x2b2b4f,0x23233f,0x1b1b2f,0x13131f,0x0b0b0f,
  98         0x2b0000,0x3b0000,0x4b0700,0x5f0700,0x6f0f00,0x7f1707,0x931f07,0xa3270b,
  99         0xb7330f,0xc34b1b,0xcf632b,0xdb7f3b,0xe3974f,0xe7ab5f,0xefbf77,0xf7d38b,
 100         0xa77b3b,0xb79b37,0xc7c337,0xe7e357,0x7fbfff,0xabe7ff,0xd7ffff,0x670000,
 101         0x8b0000,0xb30000,0xd70000,0xff0000,0xfff393,0xfff7c7,0xffffff,0x9f5b53
 102 };
 103
 104 //static int explosparkramp[8] = {0x4b0700, 0x6f0f00, 0x931f07, 0xb7330f, 0xcf632b, 0xe3974f, 0xffe7b5, 0xffffff};
 105
 106 // these must match r_part.c's textures
 107 static const int tex_smoke[8] = {0, 1, 2, 3, 4, 5, 6, 7};
 108 static const int tex_rainsplash[16] = {8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23};
 109 static const int tex_particle = 24;
 110 static const int tex_rain = 25;
 111 static const int tex_bubble = 26;
 112
 113 static int                      cl_maxparticles;
 114 static int                      cl_numparticles;
 115 static particle_t       *particles;
 116 static particle_t       **freeparticles; // list used only in compacting particles array
 117
 118 cvar_t cl_particles = {CVAR_SAVE, "cl_particles", "1"};
 119 cvar_t cl_particles_size = {CVAR_SAVE, "cl_particles_size", "1"};
 120 cvar_t cl_particles_bloodshowers = {CVAR_SAVE, "cl_particles_bloodshowers", "1"};
 121 cvar_t cl_particles_blood = {CVAR_SAVE, "cl_particles_blood", "1"};
 122 cvar_t cl_particles_blood_size = {CVAR_SAVE, "cl_particles_blood_size", "8"};
 123 cvar_t cl_particles_blood_alpha = {CVAR_SAVE, "cl_particles_blood_alpha", "0.5"};
 124 cvar_t cl_particles_bulletimpacts = {CVAR_SAVE, "cl_particles_bulletimpacts", "1"};
 125 cvar_t cl_particles_smoke = {CVAR_SAVE, "cl_particles_smoke", "1"};
 126 cvar_t cl_particles_sparks = {CVAR_SAVE, "cl_particles_sparks", "1"};
 127 cvar_t cl_particles_bubbles = {CVAR_SAVE, "cl_particles_bubbles", "1"};
 128
 129 static mempool_t *cl_part_mempool;
 130
 131 void CL_Particles_Clear(void)
 132 {
 133         cl_numparticles = 0;
 134 }
 135
 136 /*
 137 ===============
 138 CL_InitParticles
 139 ===============
 140 */
 141 void CL_ReadPointFile_f (void);
 142 void CL_Particles_Init (void)
 143 {
 144         int             i;
 145
 146         i = COM_CheckParm ("-particles");
 147
 148         if (i && i < com_argc - 1)
 149         {
 150                 cl_maxparticles = (int)(atoi(com_argv[i+1]));
 151                 if (cl_maxparticles < ABSOLUTE_MIN_PARTICLES)
 152                         cl_maxparticles = ABSOLUTE_MIN_PARTICLES;
 153         }
 154         else
 155                 cl_maxparticles = MAX_PARTICLES;
 156
 157         Cmd_AddCommand ("pointfile", CL_ReadPointFile_f);
 158
 159         Cvar_RegisterVariable (&cl_particles);
 160         Cvar_RegisterVariable (&cl_particles_size);
 161         Cvar_RegisterVariable (&cl_particles_bloodshowers);
 162         Cvar_RegisterVariable (&cl_particles_blood);
 163         Cvar_RegisterVariable (&cl_particles_blood_size);
 164         Cvar_RegisterVariable (&cl_particles_blood_alpha);
 165         Cvar_RegisterVariable (&cl_particles_bulletimpacts);
 166         Cvar_RegisterVariable (&cl_particles_smoke);
 167         Cvar_RegisterVariable (&cl_particles_sparks);
 168         Cvar_RegisterVariable (&cl_particles_bubbles);
 169
 170         cl_part_mempool = Mem_AllocPool("CL_Part");
 171         particles = (particle_t *) Mem_Alloc(cl_part_mempool, cl_maxparticles * sizeof(particle_t));
 172         freeparticles = (void *) Mem_Alloc(cl_part_mempool, cl_maxparticles * sizeof(particle_t *));
 173         cl_numparticles = 0;
 174 }
 175
 176 #define particle(ptype, porientation, pcolor1, pcolor2, ptex, plight, padditive, pscalex, pscaley, palpha, palphafade, ptime, pgravity, pbounce, px, py, pz, pvx, pvy, pvz, ptime2, pvx2, pvy2, pvz2, pfriction, ppressure)\
 177 {\
 178         if (cl_numparticles >= cl_maxparticles)\
 179                 return;\
 180         {\
 181                 particle_t      *part;\
 182                 int tempcolor, tempcolor2, cr1, cg1, cb1, cr2, cg2, cb2;\
 183                 unsigned int partflags;\
 184                 partflags = ((porientation) << P_ORIENTATION_FIRSTBIT) | ((ptex) << P_TEXNUM_FIRSTBIT);\
 185                 if (padditive)\
 186                         partflags |= P_ADDITIVE;\
 187                 /*if (plight)*/\
 188                 /*      partflags |= P_DYNLIGHT;*/\
 189                 tempcolor = (pcolor1);\
 190                 tempcolor2 = (pcolor2);\
 191                 cr2 = ((tempcolor2) >> 16) & 0xFF;\
 192                 cg2 = ((tempcolor2) >> 8) & 0xFF;\
 193                 cb2 = (tempcolor2) & 0xFF;\
 194                 if (tempcolor != tempcolor2)\
 195                 {\
 196                         cr1 = ((tempcolor) >> 16) & 0xFF;\
 197                         cg1 = ((tempcolor) >> 8) & 0xFF;\
 198                         cb1 = (tempcolor) & 0xFF;\
 199                         tempcolor = rand() & 0xFF;\
 200                         cr2 = (((cr2 - cr1) * tempcolor) >> 8) + cr1;\
 201                         cg2 = (((cg2 - cg1) * tempcolor) >> 8) + cg1;\
 202                         cb2 = (((cb2 - cb1) * tempcolor) >> 8) + cb1;\
 203                 }\
 204                 part = &particles[cl_numparticles++];\
 205                 part->type = (ptype);\
 206                 part->color[0] = cr2;\
 207                 part->color[1] = cg2;\
 208                 part->color[2] = cb2;\
 209                 part->color[3] = 0xFF;\
 210                 part->flags = partflags;\
 211                 part->scalex = (pscalex);\
 212                 part->scaley = (pscaley);\
 213                 part->alpha = (palpha);\
 214                 part->alphafade = (palphafade);\
 215                 part->die = cl.time + (ptime);\
 216                 part->gravity = (pgravity);\
 217                 part->bounce = (pbounce);\
 218                 part->org[0] = (px);\
 219                 part->org[1] = (py);\
 220                 part->org[2] = (pz);\
 221                 part->vel[0] = (pvx);\
 222                 part->vel[1] = (pvy);\
 223                 part->vel[2] = (pvz);\
 224                 part->time2 = (ptime2);\
 225                 part->vel2[0] = (pvx2);\
 226                 part->vel2[1] = (pvy2);\
 227                 part->vel2[2] = (pvz2);\
 228                 part->friction = (pfriction);\
 229                 part->pressure = (ppressure);\
 230         }\
 231 }
 232
 233 /*
 234 ===============
 235 CL_EntityParticles
 236 ===============
 237 */
 238 void CL_EntityParticles (entity_t *ent)
 239 {
 240         int                     i;
 241         float           angle;
 242         float           sp, sy, cp, cy;
 243         vec3_t          forward;
 244         float           dist;
 245         float           beamlength;
 246         static vec3_t avelocities[NUMVERTEXNORMALS];
 247         if (!cl_particles.integer) return;
 248
 249         dist = 64;
 250         beamlength = 16;
 251
 252         if (!avelocities[0][0])
 253                 for (i=0 ; i<NUMVERTEXNORMALS*3 ; i++)
 254                         avelocities[0][i] = (rand()&255) * 0.01;
 255
 256         for (i=0 ; i<NUMVERTEXNORMALS ; i++)
 257         {
 258                 angle = cl.time * avelocities[i][0];
 259                 sy = sin(angle);
 260                 cy = cos(angle);
 261                 angle = cl.time * avelocities[i][1];
 262                 sp = sin(angle);
 263                 cp = cos(angle);
 264
 265                 forward[0] = cp*cy;
 266                 forward[1] = cp*sy;
 267                 forward[2] = -sp;
 268
 269                 particle(pt_static, PARTICLE_BILLBOARD, particlepalette[0x6f], particlepalette[0x6f], tex_particle, false, false, 2, 2, 255, 0, 0, 0, 0, ent->render.origin[0] + m_bytenormals[i][0]*dist + forward[0]*beamlength, ent->render.origin[1] + m_bytenormals[i][1]*dist + forward[1]*beamlength, ent->render.origin[2] + m_bytenormals[i][2]*dist + forward[2]*beamlength, 0, 0, 0, 0, 0, 0, 0, 0, 0);
 270         }
 271 }
 272
 273
 274 void CL_ReadPointFile_f (void)
 275 {
 276         vec3_t  org;
 277         int             r, c;
 278         char    *pointfile, *pointfilepos, *t, tchar;
 279
 280         pointfile = COM_LoadFile(va("maps/%s.pts", sv.name), true);
 281         if (!pointfile)
 282         {
 283                 Con_Printf ("couldn't open %s.pts\n", sv.name);
 284                 return;
 285         }
 286
 287         Con_Printf ("Reading %s.pts...\n", sv.name);
 288         c = 0;
 289         pointfilepos = pointfile;
 290         while (*pointfilepos)
 291         {
 292                 while (*pointfilepos == '\n' || *pointfilepos == '\r')
 293                         pointfilepos++;
 294                 if (!*pointfilepos)
 295                         break;
 296                 t = pointfilepos;
 297                 while (*t && *t != '\n' && *t != '\r')
 298                         t++;
 299                 tchar = *t;
 300                 *t = 0;
 301                 r = sscanf (pointfilepos,"%f %f %f", &org[0], &org[1], &org[2]);
 302                 *t = tchar;
 303                 pointfilepos = t;
 304                 if (r != 3)
 305                         break;
 306                 c++;
 307
 308                 if (cl_numparticles >= cl_maxparticles)
 309                 {
 310                         Con_Printf ("Not enough free particles\n");
 311                         break;
 312                 }
 313                 particle(pt_static, PARTICLE_BILLBOARD, particlepalette[(-c)&15], particlepalette[(-c)&15], tex_particle, false, false, 2, 2, 255, 0, 99999, 0, 0, org[0], org[1], org[2], 0, 0, 0, 0, 0, 0, 0, 0, 0);
 314         }
 315
 316         Mem_Free(pointfile);
 317         Con_Printf ("%i points read\n", c);
 318 }
 319
 320 /*
 321 ===============
 322 CL_ParseParticleEffect
 323
 324 Parse an effect out of the server message
 325 ===============
 326 */
 327 void CL_ParseParticleEffect (void)
 328 {
 329         vec3_t          org, dir;
 330         int                     i, count, msgcount, color;
 331
 332         for (i=0 ; i<3 ; i++)
 333                 org[i] = MSG_ReadCoord ();
 334         for (i=0 ; i<3 ; i++)
 335                 dir[i] = MSG_ReadChar () * (1.0/16);
 336         msgcount = MSG_ReadByte ();
 337         color = MSG_ReadByte ();
 338
 339         if (msgcount == 255)
 340                 count = 1024;
 341         else
 342                 count = msgcount;
 343
 344         CL_RunParticleEffect (org, dir, color, count);
 345 }
 346
 347 /*
 348 ===============
 349 CL_ParticleExplosion
 350
 351 ===============
 352 */
 353 void CL_ParticleExplosion (vec3_t org, int smoke)
 354 {
 355         int i;
 356         if (cl_stainmaps.integer)
 357                 R_Stain(org, 96, 80, 80, 80, 64, 176, 176, 176, 64);
 358
 359         i = Mod_PointContents(org, cl.worldmodel);
 360         if ((i == CONTENTS_SLIME || i == CONTENTS_WATER) && cl_particles.integer && cl_particles_bubbles.integer)
 361         {
 362                 for (i = 0;i < 128;i++)
 363                 {
 364                         particle(pt_bubble, PARTICLE_BILLBOARD, 0x404040, 0x808080, tex_bubble, false, true, 2, 2, lhrandom(128, 255), 256, 9999, -0.25, 1.5, org[0] + lhrandom(-16, 16), org[1] + lhrandom(-16, 16), org[2] + lhrandom(-16, 16), lhrandom(-96, 96), lhrandom(-96, 96), lhrandom(-96, 96), 0, 0, 0, 0, (1.0 / 16.0), 0);
 365                 }
 366         }
 367
 368         if (cl_explosions.integer)
 369                 R_NewExplosion(org);
 370 }
 371
 372 /*
 373 ===============
 374 CL_ParticleExplosion2
 375
 376 ===============
 377 */
 378 void CL_ParticleExplosion2 (vec3_t org, int colorStart, int colorLength)
 379 {
 380         int i, k;
 381         if (!cl_particles.integer) return;
 382
 383         for (i = 0;i < 512;i++)
 384         {
 385                 k = particlepalette[colorStart + (i % colorLength)];
 386                 particle(pt_static, PARTICLE_BILLBOARD, k, k, tex_particle, false, false, 1.5, 1.5, 255, 384, 0.3, 0, 0, org[0] + lhrandom(-8, 8), org[1] + lhrandom(-8, 8), org[2] + lhrandom(-8, 8), lhrandom(-192, 192), lhrandom(-192, 192), lhrandom(-192, 192), 0, 0, 0, 0, 1, 0);
 387         }
 388 }
 389
 390 /*
 391 ===============
 392 CL_BlobExplosion
 393
 394 ===============
 395 */
 396 void CL_BlobExplosion (vec3_t org)
 397 {
 398         if (cl_stainmaps.integer)
 399                 R_Stain(org, 96, 80, 80, 80, 64, 176, 176, 176, 64);
 400
 401         if (cl_explosions.integer)
 402                 R_NewExplosion(org);
 403 }
 404
 405 /*
 406 ===============
 407 CL_RunParticleEffect
 408
 409 ===============
 410 */
 411 void CL_RunParticleEffect (vec3_t org, vec3_t dir, int color, int count)
 412 {
 413         int k;
 414
 415         if (count == 1024)
 416         {
 417                 CL_ParticleExplosion(org, false);
 418                 return;
 419         }
 420         if (!cl_particles.integer) return;
 421         while (count--)
 422         {
 423                 k = particlepalette[color + (rand()&7)];
 424                 particle(pt_static, PARTICLE_BILLBOARD, k, k, tex_particle, false, false, 1, 1, 255, 512, 9999, 0, 0, org[0] + lhrandom(-8, 8), org[1] + lhrandom(-8, 8), org[2] + lhrandom(-8, 8), lhrandom(-15, 15), lhrandom(-15, 15), lhrandom(-15, 15), 0, 0, 0, 0, 0, 0);
 425         }
 426 }
 427
 428 // LordHavoc: added this for spawning sparks/dust (which have strong gravity)
 429 /*
 430 ===============
 431 CL_SparkShower
 432 ===============
 433 */
 434 void CL_SparkShower (vec3_t org, vec3_t dir, int count)
 435 {
 436         int k;
 437         if (!cl_particles.integer) return;
 438
 439         if (cl_stainmaps.integer)
 440                 R_Stain(org, 32, 96, 96, 96, 24, 128, 128, 128, 24);
 441
 442         if (cl_particles_bulletimpacts.integer)
 443         {
 444                 // smoke puff
 445                 if (cl_particles_smoke.integer)
 446                         particle(pt_static, PARTICLE_BILLBOARD, 0x606060, 0xA0A0A0, tex_smoke[rand()&7], true, true, 4, 4, 255, 1024, 9999, -0.2, 0, org[0], org[1], org[2], lhrandom(-8, 8), lhrandom(-8, 8), lhrandom(0, 16), 0, 0, 0, 0, 0, 0);
 447
 448                 if (cl_particles_sparks.integer)
 449                 {
 450                         // sparks
 451                         while(count--)
 452                         {
 453                                 k = particlepalette[0x68 + (rand() & 7)];
 454                                 particle(pt_static, PARTICLE_BEAM, k, k, tex_particle, false, true, 0.4f, 0.015f, lhrandom(64, 255), 512, 9999, 1, 0, org[0], org[1], org[2], lhrandom(-64, 64) + dir[0], lhrandom(-64, 64) + dir[1], lhrandom(0, 128) + dir[2], 0, 0, 0, 0, 0, 0);
 455                         }
 456                 }
 457         }
 458 }
 459
 460 void CL_PlasmaBurn (vec3_t org)
 461 {
 462         if (cl_stainmaps.integer)
 463                 R_Stain(org, 48, 96, 96, 96, 32, 128, 128, 128, 32);
 464 }
 465
 466 static float bloodcount = 0;
 467 void CL_BloodPuff (vec3_t org, vec3_t vel, int count)
 468 {
 469         float s, r, a;
 470         // bloodcount is used to accumulate counts too small to cause a blood particle
 471         if (!cl_particles.integer) return;
 472         if (!cl_particles_blood.integer) return;
 473
 474         s = count + 32.0f;
 475         count *= 5.0f;
 476         if (count > 1000)
 477                 count = 1000;
 478         bloodcount += count;
 479         r = cl_particles_blood_size.value;
 480         a = cl_particles_blood_alpha.value * 255;
 481         while(bloodcount > 0)
 482         {
 483                 particle(pt_blood, PARTICLE_BILLBOARD, 0x000000, 0x200000, tex_smoke[rand()&7], true, false, r, r, a, a * 0.5, 9999, 0, -1, org[0], org[1], org[2], vel[0] + lhrandom(-s, s), vel[1] + lhrandom(-s, s), vel[2] + lhrandom(-s, s), 0, 0, 0, 0, 1, 0);
 484                 bloodcount -= r;
 485         }
 486 }
 487
 488 void CL_BloodShower (vec3_t mins, vec3_t maxs, float velspeed, int count)
 489 {
 490         float r;
 491         float a;
 492         vec3_t diff, center, velscale;
 493         if (!cl_particles.integer) return;
 494         if (!cl_particles_bloodshowers.integer) return;
 495         if (!cl_particles_blood.integer) return;
 496
 497         VectorSubtract(maxs, mins, diff);
 498         center[0] = (mins[0] + maxs[0]) * 0.5;
 499         center[1] = (mins[1] + maxs[1]) * 0.5;
 500         center[2] = (mins[2] + maxs[2]) * 0.5;
 501         // FIXME: change velspeed back to 2.0x after fixing mod
 502         velscale[0] = velspeed * 2.0 / diff[0];
 503         velscale[1] = velspeed * 2.0 / diff[1];
 504         velscale[2] = velspeed * 2.0 / diff[2];
 505
 506         bloodcount += count * 5.0f;
 507         r = cl_particles_blood_size.value;
 508         a = cl_particles_blood_alpha.value * 255;
 509         while (bloodcount > 0)
 510         {
 511                 vec3_t org, vel;
 512                 org[0] = lhrandom(mins[0], maxs[0]);
 513                 org[1] = lhrandom(mins[1], maxs[1]);
 514                 org[2] = lhrandom(mins[2], maxs[2]);
 515                 vel[0] = (org[0] - center[0]) * velscale[0];
 516                 vel[1] = (org[1] - center[1]) * velscale[1];
 517                 vel[2] = (org[2] - center[2]) * velscale[2];
 518                 bloodcount -= r;
 519                 particle(pt_blood, PARTICLE_BILLBOARD, 0x000000, 0x200000, tex_smoke[rand()&7], true, false, r, r, a, a * 0.5, 9999, 0, -1, org[0], org[1], org[2], vel[0], vel[1], vel[2], 0, 0, 0, 0, 1, 0);
 520         }
 521 }
 522
 523 void CL_ParticleCube (vec3_t mins, vec3_t maxs, vec3_t dir, int count, int colorbase, int gravity, int randomvel)
 524 {
 525         int k;
 526         float t;
 527         if (!cl_particles.integer) return;
 528         if (maxs[0] <= mins[0]) {t = mins[0];mins[0] = maxs[0];maxs[0] = t;}
 529         if (maxs[1] <= mins[1]) {t = mins[1];mins[1] = maxs[1];maxs[1] = t;}
 530         if (maxs[2] <= mins[2]) {t = mins[2];mins[2] = maxs[2];maxs[2] = t;}
 531
 532         while (count--)
 533         {
 534                 k = particlepalette[colorbase + (rand()&3)];
 535                 particle(pt_static, PARTICLE_BILLBOARD, k, k, tex_particle, false, false, 2, 2, 255, 0, lhrandom(1, 2), gravity ? 1 : 0, 0, lhrandom(mins[0], maxs[0]), lhrandom(mins[1], maxs[1]), lhrandom(mins[2], maxs[2]), dir[0] + lhrandom(-randomvel, randomvel), dir[1] + lhrandom(-randomvel, randomvel), dir[2] + lhrandom(-randomvel, randomvel), 0, 0, 0, 0, 0, 0);
 536         }
 537 }
 538
 539 void CL_ParticleRain (vec3_t mins, vec3_t maxs, vec3_t dir, int count, int colorbase, int type)
 540 {
 541         int k;
 542         float t, z, minz, maxz;
 543         if (!cl_particles.integer) return;
 544         if (maxs[0] <= mins[0]) {t = mins[0];mins[0] = maxs[0];maxs[0] = t;}
 545         if (maxs[1] <= mins[1]) {t = mins[1];mins[1] = maxs[1];maxs[1] = t;}
 546         if (maxs[2] <= mins[2]) {t = mins[2];mins[2] = maxs[2];maxs[2] = t;}
 547         if (dir[2] < 0) // falling
 548         {
 549                 t = (maxs[2] - mins[2]) / -dir[2];
 550                 z = maxs[2];
 551         }
 552         else // rising??
 553         {
 554                 t = (maxs[2] - mins[2]) / dir[2];
 555                 z = mins[2];
 556         }
 557         if (t < 0 || t > 2) // sanity check
 558                 t = 2;
 559
 560         minz = z - fabs(dir[2]) * 0.1;
 561         maxz = z + fabs(dir[2]) * 0.1;
 562         minz = bound(mins[2], minz, maxs[2]);
 563         maxz = bound(mins[2], maxz, maxs[2]);
 564
 565         switch(type)
 566         {
 567         case 0:
 568                 count *= 4; // ick, this should be in the mod or maps?
 569
 570                 while(count--)
 571                 {
 572                         k = particlepalette[colorbase + (rand()&3)];
 573                         particle(pt_rain, PARTICLE_BEAM, k, k, tex_particle, true, true, 0.5, 0.02, lhrandom(8, 16), 0, t, 0, 0, lhrandom(mins[0], maxs[0]), lhrandom(mins[1], maxs[1]), lhrandom(minz, maxz), dir[0], dir[1], dir[2], cl.time + 9999, dir[0], dir[1], dir[2], 0, 0);
 574                 }
 575                 break;
 576         case 1:
 577                 while(count--)
 578                 {
 579                         k = particlepalette[colorbase + (rand()&3)];
 580                         particle(pt_rain, PARTICLE_BILLBOARD, k, k, tex_particle, false, true, 1, 1, lhrandom(64, 128), 0, t, 0, 0, lhrandom(mins[0], maxs[0]), lhrandom(mins[1], maxs[1]), lhrandom(minz, maxz), dir[0], dir[1], dir[2], 0, dir[0], dir[1], dir[2], 0, 0);
 581                 }
 582                 break;
 583         default:
 584                 Host_Error("CL_ParticleRain: unknown type %i (0 = rain, 1 = snow)\n", type);
 585         }
 586 }
 587
 588 void CL_Stardust (vec3_t mins, vec3_t maxs, int count)
 589 {
 590         int k;
 591         float t;
 592         vec3_t o, v, center;
 593         if (!cl_particles.integer) return;
 594
 595         if (maxs[0] <= mins[0]) {t = mins[0];mins[0] = maxs[0];maxs[0] = t;}
 596         if (maxs[1] <= mins[1]) {t = mins[1];mins[1] = maxs[1];maxs[1] = t;}
 597         if (maxs[2] <= mins[2]) {t = mins[2];mins[2] = maxs[2];maxs[2] = t;}
 598
 599         center[0] = (mins[0] + maxs[0]) * 0.5f;
 600         center[1] = (mins[1] + maxs[1]) * 0.5f;
 601         center[2] = (mins[2] + maxs[2]) * 0.5f;
 602
 603         while (count--)
 604         {
 605                 k = particlepalette[224 + (rand()&15)];
 606                 o[0] = lhrandom(mins[0], maxs[0]);
 607                 o[1] = lhrandom(mins[1], maxs[1]);
 608                 o[2] = lhrandom(mins[2], maxs[2]);
 609                 VectorSubtract(o, center, v);
 610                 VectorNormalizeFast(v);
 611                 VectorScale(v, 100, v);
 612                 v[2] += sv_gravity.value * 0.15f;
 613                 particle(pt_static, PARTICLE_BILLBOARD, 0x903010, 0xFFD030, tex_particle, false, true, 1.5, 1.5, lhrandom(64, 128), 128, 9999, 1, 0, o[0], o[1], o[2], v[0], v[1], v[2], 0, 0, 0, 0, 0, 0);
 614         }
 615 }
 616
 617 void CL_FlameCube (vec3_t mins, vec3_t maxs, int count)
 618 {
 619         int k;
 620         float t;
 621         if (!cl_particles.integer) return;
 622         if (maxs[0] <= mins[0]) {t = mins[0];mins[0] = maxs[0];maxs[0] = t;}
 623         if (maxs[1] <= mins[1]) {t = mins[1];mins[1] = maxs[1];maxs[1] = t;}
 624         if (maxs[2] <= mins[2]) {t = mins[2];mins[2] = maxs[2];maxs[2] = t;}
 625
 626         while (count--)
 627         {
 628                 k = particlepalette[224 + (rand()&15)];
 629                 particle(pt_static, PARTICLE_BILLBOARD, k, k, tex_particle, false, true, 4, 4, lhrandom(64, 128), 384, 9999, -1, 0, lhrandom(mins[0], maxs[0]), lhrandom(mins[1], maxs[1]), lhrandom(mins[2], maxs[2]), lhrandom(-32, 32), lhrandom(-32, 32), lhrandom(0, 64), 0, 0, 0, 0, 1, 0);
 630                 if (count & 1)
 631                         particle(pt_static, PARTICLE_BILLBOARD, 0x303030, 0x606060, tex_smoke[rand()&7], false, true, 6, 6, lhrandom(48, 96), 64, 9999, 0, 0, lhrandom(mins[0], maxs[0]), lhrandom(mins[1], maxs[1]), lhrandom(mins[2], maxs[2]), lhrandom(-8, 8), lhrandom(-8, 8), lhrandom(0, 32), 0, 0, 0, 0, 0, 0);
 632         }
 633 }
 634
 635 void CL_Flames (vec3_t org, vec3_t vel, int count)
 636 {
 637         int k;
 638         if (!cl_particles.integer) return;
 639
 640         while (count--)
 641         {
 642                 k = particlepalette[224 + (rand()&15)];
 643                 particle(pt_static, PARTICLE_BILLBOARD, k, k, tex_particle, false, true, 4, 4, lhrandom(64, 128), 384, 9999, -1, 1.1, org[0], org[1], org[2], vel[0] + lhrandom(-128, 128), vel[1] + lhrandom(-128, 128), vel[2] + lhrandom(-128, 128), 0, 0, 0, 0, 1, 0);
 644         }
 645 }
 646
 647
 648
 649 /*
 650 ===============
 651 CL_LavaSplash
 652
 653 ===============
 654 */
 655 void CL_LavaSplash (vec3_t origin)
 656 {
 657         int                     i, j, k;
 658         float           vel;
 659         vec3_t          dir, org;
 660         if (!cl_particles.integer) return;
 661
 662         for (i=-128 ; i<128 ; i+=16)
 663         {
 664                 for (j=-128 ; j<128 ; j+=16)
 665                 {
 666                         dir[0] = j + lhrandom(0, 8);
 667                         dir[1] = i + lhrandom(0, 8);
 668                         dir[2] = 256;
 669                         org[0] = origin[0] + dir[0];
 670                         org[1] = origin[1] + dir[1];
 671                         org[2] = origin[2] + lhrandom(0, 64);
 672                         vel = lhrandom(50, 120) / VectorLength(dir); // normalize and scale
 673                         k = particlepalette[224 + (rand()&7)];
 674                         particle(pt_static, PARTICLE_BILLBOARD, k, k, tex_particle, false, true, 7, 7, 255, 192, 9999, 0.05, 0, org[0], org[1], org[2], dir[0] * vel, dir[1] * vel, dir[2] * vel, 0, 0, 0, 0, 0, 0);
 675                 }
 676         }
 677 }
 678
 679 /*
 680 ===============
 681 CL_TeleportSplash
 682
 683 ===============
 684 */
 685 /*
 686 void CL_TeleportSplash (vec3_t org)
 687 {
 688         int i, j, k;
 689         if (!cl_particles.integer) return;
 690
 691         for (i=-16 ; i<16 ; i+=8)
 692                 for (j=-16 ; j<16 ; j+=8)
 693                         for (k=-24 ; k<32 ; k+=8)
 694                                 particle(pt_static, PARTICLE_BILLBOARD, 0xA0A0A0, 0xFFFFFF, tex_particle, false, true, 10, 10, lhrandom(64, 128), 256, 9999, 0, 0, org[0] + i + lhrandom(0, 8), org[1] + j + lhrandom(0, 8), org[2] + k + lhrandom(0, 8), lhrandom(-64, 64), lhrandom(-64, 64), lhrandom(-256, 256), 0, 0, 0, 0, 1, 0);
 695 }
 696 */
 697
 698 void CL_RocketTrail (vec3_t start, vec3_t end, int type, entity_t *ent)
 699 {
 700         vec3_t vec, dir, vel, pos;
 701         float len, dec, speed, r;
 702         int contents, smoke, blood, bubbles;
 703
 704         VectorSubtract(end, start, dir);
 705         VectorNormalize(dir);
 706
 707         VectorSubtract (end, start, vec);
 708         len = VectorNormalizeLength (vec);
 709         dec = -ent->persistent.trail_time;
 710         ent->persistent.trail_time += len;
 711         if (ent->persistent.trail_time < 0.01f)
 712                 return;
 713
 714         speed = 1.0f / (ent->state_current.time - ent->state_previous.time);
 715         VectorSubtract(ent->state_current.origin, ent->state_previous.origin, vel);
 716         VectorScale(vel, speed, vel);
 717
 718         // advance into this frame to reach the first puff location
 719         VectorMA(start, dec, vec, pos);
 720         len -= dec;
 721
 722         // if we skip out, leave it reset
 723         ent->persistent.trail_time = 0.0f;
 724
 725         contents = Mod_PointContents(pos, cl.worldmodel);
 726         if (contents == CONTENTS_SKY || contents == CONTENTS_LAVA)
 727                 return;
 728
 729         smoke = cl_particles.integer && cl_particles_smoke.integer;
 730         blood = cl_particles.integer && cl_particles_blood.integer;
 731         bubbles = cl_particles.integer && cl_particles_bubbles.integer && (contents == CONTENTS_WATER || contents == CONTENTS_SLIME);
 732
 733         while (len >= 0)
 734         {
 735                 switch (type)
 736                 {
 737                         case 0: // rocket trail
 738                                 dec = 3;
 739                                 if (smoke)
 740                                 {
 741                                         particle(pt_static, PARTICLE_BILLBOARD, 0x303030, 0x606060, tex_smoke[rand()&7], false, true, dec, dec, 32, 64, 9999, 0, 0, pos[0], pos[1], pos[2], lhrandom(-5, 5), lhrandom(-5, 5), lhrandom(-5, 5), 0, 0, 0, 0, 0, 0);
 742                                         particle(pt_static, PARTICLE_BILLBOARD, 0x801010, 0xFFA020, tex_smoke[rand()&7], false, true, dec, dec, 128, 768, 9999, 0, 0, pos[0], pos[1], pos[2], lhrandom(-20, 20), lhrandom(-20, 20), lhrandom(-20, 20), 0, 0, 0, 0, 0, 0);
 743                                 }
 744                                 if (bubbles)
 745                                 {
 746                                         r = lhrandom(1, 2);
 747                                         particle(pt_bubble, PARTICLE_BILLBOARD, 0x404040, 0x808080, tex_bubble, false, true, r, r, lhrandom(64, 255), 256, 9999, -0.25, 1.5, pos[0], pos[1], pos[2], lhrandom(-16, 16), lhrandom(-16, 16), lhrandom(-16, 16), 0, 0, 0, 0, (1.0 / 16.0), 0);
 748                                 }
 749                                 break;
 750
 751                         case 1: // grenade trail
 752                                 // FIXME: make it gradually stop smoking
 753                                 dec = 3;
 754                                 if (cl_particles.integer && cl_particles_smoke.integer)
 755                                 {
 756                                         particle(pt_static, PARTICLE_BILLBOARD, 0x303030, 0x606060, tex_smoke[rand()&7], false, true, dec, dec, 32, 96, 9999, 0, 0, pos[0], pos[1], pos[2], lhrandom(-5, 5), lhrandom(-5, 5), lhrandom(-5, 5), 0, 0, 0, 0, 0, 0);
 757                                 }
 758                                 break;
 759
 760
 761                         case 2: // blood
 762                         case 4: // slight blood
 763                                 dec = cl_particles_blood_size.value;
 764                                 if (blood)
 765                                 {
 766                                         particle(pt_blood, PARTICLE_BILLBOARD, 0x100000, 0x280000, tex_smoke[rand()&7], true, false, dec, dec, cl_particles_blood_alpha.value * 255.0f, cl_particles_blood_alpha.value * 255.0f * 0.5, 9999, 0, -1, pos[0], pos[1], pos[2], vel[0] * 0.5f + lhrandom(-64, 64), vel[1] * 0.5f + lhrandom(-64, 64), vel[2] * 0.5f + lhrandom(-64, 64), 0, 0, 0, 0, 1, 0);
 767                                 }
 768                                 break;
 769
 770                         case 3: // green tracer
 771                                 dec = 6;
 772                                 if (smoke)
 773                                 {
 774                                         particle(pt_static, PARTICLE_BILLBOARD, 0x002000, 0x003000, tex_particle, false, true, dec, dec, 128, 384, 9999, 0, 0, pos[0], pos[1], pos[2], lhrandom(-8, 8), lhrandom(-8, 8), lhrandom(-8, 8), 0, 0, 0, 0, 0, 0);
 775                                 }
 776                                 break;
 777
 778                         case 5: // flame tracer
 779                                 dec = 6;
 780                                 if (smoke)
 781                                 {
 782                                         particle(pt_static, PARTICLE_BILLBOARD, 0x301000, 0x502000, tex_particle, false, true, dec, dec, 128, 384, 9999, 0, 0, pos[0], pos[1], pos[2], lhrandom(-8, 8), lhrandom(-8, 8), lhrandom(-8, 8), 0, 0, 0, 0, 0, 0);
 783                                 }
 784                                 break;
 785
 786                         case 6: // voor trail
 787                                 dec = 6;
 788                                 if (smoke)
 789                                 {
 790                                         particle(pt_static, PARTICLE_BILLBOARD, 0x502030, 0x502030, tex_particle, false, true, dec, dec, 128, 384, 9999, 0, 0, pos[0], pos[1], pos[2], lhrandom(-8, 8), lhrandom(-8, 8), lhrandom(-8, 8), 0, 0, 0, 0, 0, 0);
 791                                 }
 792                                 break;
 793
 794                         case 7: // Nehahra smoke tracer
 795                                 dec = 7;
 796                                 if (smoke)
 797                                 {
 798                                         particle(pt_static, PARTICLE_BILLBOARD, 0x303030, 0x606060, tex_smoke[rand()&7], true, false, dec, dec, 64, 320, 9999, 0, 0, pos[0], pos[1], pos[2], lhrandom(-4, 4), lhrandom(-4, 4), lhrandom(0, 16), 0, 0, 0, 0, 0, 0);
 799                                 }
 800                                 break;
 801                 }
 802
 803                 // advance to next time and position
 804                 len -= dec;
 805                 VectorMA (pos, dec, vec, pos);
 806         }
 807         ent->persistent.trail_time = len;
 808 }
 809
 810 void CL_RocketTrail2 (vec3_t start, vec3_t end, int color, entity_t *ent)
 811 {
 812         vec3_t vec, pos;
 813         int len;
 814         if (!cl_particles.integer) return;
 815         if (!cl_particles_smoke.integer) return;
 816
 817         VectorCopy(start, pos);
 818         VectorSubtract (end, start, vec);
 819         len = (int) (VectorNormalizeLength (vec) * (1.0f / 3.0f));
 820         VectorScale(vec, 3, vec);
 821         color = particlepalette[color];
 822         while (len--)
 823         {
 824                 particle(pt_static, PARTICLE_BILLBOARD, color, color, tex_particle, false, false, 5, 5, 128, 320, 9999, 0, 0, pos[0], pos[1], pos[2], 0, 0, 0, 0, 0, 0, 0, 0, 0);
 825                 VectorAdd (pos, vec, pos);
 826         }
 827 }
 828
 829
 830 /*
 831 ===============
 832 CL_MoveParticles
 833 ===============
 834 */
 835 void CL_MoveParticles (void)
 836 {
 837         particle_t *p;
 838         int i, activeparticles, maxparticle, j, a, pressureused = false, content;
 839         float gravity, dvel, bloodwaterfade, frametime, f, dist, normal[3], v[3], org[3];
 840
 841         // LordHavoc: early out condition
 842         if (!cl_numparticles)
 843                 return;
 844
 845         frametime = cl.time - cl.oldtime;
 846         gravity = frametime * sv_gravity.value;
 847         dvel = 1+4*frametime;
 848         bloodwaterfade = max(cl_particles_blood_alpha.value, 0.01f) * frametime * 128.0f;
 849
 850         activeparticles = 0;
 851         maxparticle = -1;
 852         j = 0;
 853         for (i = 0, p = particles;i < cl_numparticles;i++, p++)
 854         {
 855                 content = 0;
 856                 VectorCopy(p->org, p->oldorg);
 857                 VectorMA(p->org, frametime, p->vel, p->org);
 858                 VectorCopy(p->org, org);
 859                 if (p->bounce)
 860                 {
 861                         if (CL_TraceLine(p->oldorg, p->org, v, normal, 0, true) < 1)
 862                         {
 863                                 VectorCopy(v, p->org);
 864                                 if (p->bounce < 0)
 865                                 {
 866                                         // assume it's blood (lame, but...)
 867                                         if (cl_stainmaps.integer)
 868                                                 R_Stain(v, 32, 32, 16, 16, p->alpha * p->scalex * (1.0f / 40.0f), 192, 48, 48, p->alpha * p->scalex * (1.0f / 40.0f));
 869                                         p->die = -1;
 870                                         freeparticles[j++] = p;
 871                                         continue;
 872                                 }
 873                                 else
 874                                 {
 875                                         dist = DotProduct(p->vel, normal) * -p->bounce;
 876                                         VectorMA(p->vel, dist, normal, p->vel);
 877                                         if (DotProduct(p->vel, p->vel) < 0.03)
 878                                                 VectorClear(p->vel);
 879                                 }
 880                         }
 881                 }
 882                 p->vel[2] -= p->gravity * gravity;
 883                 p->alpha -= p->alphafade * frametime;
 884                 if (p->friction)
 885                 {
 886                         f = p->friction * frametime;
 887                         if (!content)
 888                                 content = Mod_PointContents(p->org, cl.worldmodel);
 889                         if (content != CONTENTS_EMPTY)
 890                                 f *= 4;
 891                         f = 1.0f - f;
 892                         VectorScale(p->vel, f, p->vel);
 893                 }
 894
 895                 if (p->type != pt_static)
 896                 {
 897                         switch (p->type)
 898                         {
 899                         case pt_blood:
 900                                 if (!content)
 901                                         content = Mod_PointContents(p->org, cl.worldmodel);
 902                                 a = content;
 903                                 if (a != CONTENTS_EMPTY)
 904                                 {
 905                                         if (a == CONTENTS_WATER || a == CONTENTS_SLIME)
 906                                         {
 907                                                 p->scalex += frametime * cl_particles_blood_size.value;
 908                                                 p->scaley += frametime * cl_particles_blood_size.value;
 909                                                 //p->alpha -= bloodwaterfade;
 910                                         }
 911                                         else
 912                                                 p->die = -1;
 913                                 }
 914                                 else
 915                                         p->vel[2] -= gravity;
 916                                 break;
 917                         case pt_bubble:
 918                                 if (!content)
 919                                         content = Mod_PointContents(p->org, cl.worldmodel);
 920                                 if (content != CONTENTS_WATER && content != CONTENTS_SLIME)
 921                                 {
 922                                         p->die = -1;
 923                                         break;
 924                                 }
 925                                 break;
 926                         case pt_rain:
 927                                 if (cl.time > p->time2)
 928                                 {
 929                                         // snow flutter
 930                                         p->time2 = cl.time + (rand() & 3) * 0.1;
 931                                         p->vel[0] = lhrandom(-32, 32) + p->vel2[0];
 932                                         p->vel[1] = lhrandom(-32, 32) + p->vel2[1];
 933                                         p->vel[2] = /*lhrandom(-32, 32) +*/ p->vel2[2];
 934                                 }
 935                                 if (!content)
 936                                         content = Mod_PointContents(p->org, cl.worldmodel);
 937                                 a = content;
 938                                 if (a != CONTENTS_EMPTY && a != CONTENTS_SKY)
 939                                         p->die = -1;
 940                                 break;
 941                         default:
 942                                 printf("unknown particle type %i\n", p->type);
 943                                 p->die = -1;
 944                                 break;
 945                         }
 946                 }
 947
 948                 // remove dead particles
 949                 if (p->alpha < 1 || p->die < cl.time)
 950                         freeparticles[j++] = p;
 951                 else
 952                 {
 953                         maxparticle = i;
 954                         activeparticles++;
 955                         if (p->pressure)
 956                                 pressureused = true;
 957                 }
 958         }
 959         // fill in gaps to compact the array
 960         i = 0;
 961         while (maxparticle >= activeparticles)
 962         {
 963                 *freeparticles[i++] = particles[maxparticle--];
 964                 while (maxparticle >= activeparticles && particles[maxparticle].die < cl.time)
 965                         maxparticle--;
 966         }
 967         cl_numparticles = activeparticles;
 968
 969         if (pressureused)
 970         {
 971                 activeparticles = 0;
 972                 for (i = 0, p = particles;i < cl_numparticles;i++, p++)
 973                         if (p->pressure)
 974                                 freeparticles[activeparticles++] = p;
 975
 976                 if (activeparticles)
 977                 {
 978                         for (i = 0, p = particles;i < cl_numparticles;i++, p++)
 979                         {
 980                                 for (j = 0;j < activeparticles;j++)
 981                                 {
 982                                         if (freeparticles[j] != p)
 983                                         {
 984                                                 float dist, diff[3];
 985                                                 VectorSubtract(p->org, freeparticles[j]->org, diff);
 986                                                 dist = DotProduct(diff, diff);
 987                                                 if (dist < 4096 && dist >= 1)
 988                                                 {
 989                                                         dist = freeparticles[j]->scalex * 4.0f * frametime / sqrt(dist);
 990                                                         VectorMA(p->vel, dist, diff, p->vel);
 991                                                 }
 992                                         }
 993                                 }
 994                         }
 995                 }
 996         }
 997 }
 998
 999 #define MAX_PARTICLETEXTURES 64
1000 // particletexture_t is a rectangle in the particlefonttexture
1001 typedef struct
1002 {
1003         float s1, t1, s2, t2;
1004 }
1005 particletexture_t;
1006
1007 static rtexturepool_t *particletexturepool;
1008
1009 static rtexture_t *particlefonttexture;
1010 static particletexture_t particletexture[MAX_PARTICLETEXTURES];
1011
1012 static cvar_t r_drawparticles = {0, "r_drawparticles", "1"};
1013
1014 static qbyte shadebubble(float dx, float dy, vec3_t light)
1015 {
1016         float   dz, f, dot;
1017         vec3_t  normal;
1018         dz = 1 - (dx*dx+dy*dy);
1019         if (dz > 0) // it does hit the sphere
1020         {
1021                 f = 0;
1022                 // back side
1023                 normal[0] = dx;normal[1] = dy;normal[2] = dz;
1024                 VectorNormalize(normal);
1025                 dot = DotProduct(normal, light);
1026                 if (dot > 0.5) // interior reflection
1027                         f += ((dot *  2) - 1);
1028                 else if (dot < -0.5) // exterior reflection
1029                         f += ((dot * -2) - 1);
1030                 // front side
1031                 normal[0] = dx;normal[1] = dy;normal[2] = -dz;
1032                 VectorNormalize(normal);
1033                 dot = DotProduct(normal, light);
1034                 if (dot > 0.5) // interior reflection
1035                         f += ((dot *  2) - 1);
1036                 else if (dot < -0.5) // exterior reflection
1037                         f += ((dot * -2) - 1);
1038                 f *= 128;
1039                 f += 16; // just to give it a haze so you can see the outline
1040                 f = bound(0, f, 255);
1041                 return (qbyte) f;
1042         }
1043         else
1044                 return 0;
1045 }
1046
1047 static void setuptex(int cltexnum, int rtexnum, qbyte *data, qbyte *particletexturedata)
1048 {
1049         int basex, basey, y;
1050         basex = ((rtexnum >> 0) & 7) * 32;
1051         basey = ((rtexnum >> 3) & 7) * 32;
1052         particletexture[cltexnum].s1 = (basex + 1) / 256.0f;
1053         particletexture[cltexnum].t1 = (basey + 1) / 256.0f;
1054         particletexture[cltexnum].s2 = (basex + 31) / 256.0f;
1055         particletexture[cltexnum].t2 = (basey + 31) / 256.0f;
1056         for (y = 0;y < 32;y++)
1057                 memcpy(particletexturedata + ((basey + y) * 256 + basex) * 4, data + y * 32 * 4, 32 * 4);
1058 }
1059
1060 static void R_InitParticleTexture (void)
1061 {
1062         int             x,y,d,i,m;
1063         float   dx, dy, radius, f, f2;
1064         qbyte   data[32][32][4], noise1[64][64], noise2[64][64];
1065         vec3_t  light;
1066         qbyte   particletexturedata[256*256*4];
1067
1068         memset(particletexturedata, 255, sizeof(particletexturedata));
1069
1070         // the particletexture[][] array numbers must match the cl_part.c textures
1071         // smoke/blood
1072         for (i = 0;i < 8;i++)
1073         {
1074                 do
1075                 {
1076                         fractalnoise(&noise1[0][0], 64, 4);
1077                         fractalnoise(&noise2[0][0], 64, 8);
1078                         m = 0;
1079                         for (y = 0;y < 32;y++)
1080                         {
1081                                 dy = y - 16;
1082                                 for (x = 0;x < 32;x++)
1083                                 {
1084                                         data[y][x][0] = data[y][x][1] = data[y][x][2] = 255;
1085                                         dx = x - 16;
1086                                         d = (noise2[y][x] - 128) * 3 + 192;
1087                                         if (d > 0)
1088                                                 d = (d * (256 - (int) (dx*dx+dy*dy))) >> 8;
1089                                         d = (d * noise1[y][x]) >> 7;
1090                                         d = bound(0, d, 255);
1091                                         data[y][x][3] = (qbyte) d;
1092                                         if (m < d)
1093                                                 m = d;
1094                                 }
1095                         }
1096                 }
1097                 while (m < 224);
1098
1099                 setuptex(i + 0, i + 0, &data[0][0][0], particletexturedata);
1100         }
1101
1102         // rain splash
1103         for (i = 0;i < 16;i++)
1104         {
1105                 radius = i * 3.0f / 16.0f;
1106                 f2 = 255.0f * ((15.0f - i) / 15.0f);
1107                 for (y = 0;y < 32;y++)
1108                 {
1109                         dy = (y - 16) * 0.25f;
1110                         for (x = 0;x < 32;x++)
1111                         {
1112                                 dx = (x - 16) * 0.25f;
1113                                 data[y][x][0] = data[y][x][1] = data[y][x][2] = 255;
1114                                 f = (1.0 - fabs(radius - sqrt(dx*dx+dy*dy))) * f2;
1115                                 f = bound(0.0f, f, 255.0f);
1116                                 data[y][x][3] = (int) f;
1117                         }
1118                 }
1119                 setuptex(i + 8, i + 16, &data[0][0][0], particletexturedata);
1120         }
1121
1122         // normal particle
1123         for (y = 0;y < 32;y++)
1124         {
1125                 dy = y - 16;
1126                 for (x = 0;x < 32;x++)
1127                 {
1128                         data[y][x][0] = data[y][x][1] = data[y][x][2] = 255;
1129                         dx = x - 16;
1130                         d = (256 - (dx*dx+dy*dy));
1131                         d = bound(0, d, 255);
1132                         data[y][x][3] = (qbyte) d;
1133                 }
1134         }
1135         setuptex(24, 32, &data[0][0][0], particletexturedata);
1136
1137         // rain
1138         light[0] = 1;light[1] = 1;light[2] = 1;
1139         VectorNormalize(light);
1140         for (y = 0;y < 32;y++)
1141         {
1142                 for (x = 0;x < 32;x++)
1143                 {
1144                         data[y][x][0] = data[y][x][1] = data[y][x][2] = 255;
1145                         data[y][x][3] = shadebubble((x - 16) * (1.0 / 8.0), y < 24 ? (y - 24) * (1.0 / 24.0) : (y - 24) * (1.0 / 8.0), light);
1146                 }
1147         }
1148         setuptex(25, 33, &data[0][0][0], particletexturedata);
1149
1150         // bubble
1151         light[0] = 1;light[1] = 1;light[2] = 1;
1152         VectorNormalize(light);
1153         for (y = 0;y < 32;y++)
1154         {
1155                 for (x = 0;x < 32;x++)
1156                 {
1157                         data[y][x][0] = data[y][x][1] = data[y][x][2] = 255;
1158                         data[y][x][3] = shadebubble((x - 16) * (1.0 / 16.0), (y - 16) * (1.0 / 16.0), light);
1159                 }
1160         }
1161         setuptex(26, 34, &data[0][0][0], particletexturedata);
1162
1163         particlefonttexture = R_LoadTexture (particletexturepool, "particlefont", 256, 256, particletexturedata, TEXTYPE_RGBA, TEXF_ALPHA | TEXF_PRECACHE);
1164 }
1165
1166 static void r_part_start(void)
1167 {
1168         particletexturepool = R_AllocTexturePool();
1169         R_InitParticleTexture ();
1170 }
1171
1172 static void r_part_shutdown(void)
1173 {
1174         R_FreeTexturePool(&particletexturepool);
1175 }
1176
1177 static void r_part_newmap(void)
1178 {
1179 }
1180
1181 void R_Particles_Init (void)
1182 {
1183         Cvar_RegisterVariable(&r_drawparticles);
1184         R_RegisterModule("R_Particles", r_part_start, r_part_shutdown, r_part_newmap);
1185 }
1186
1187 void R_DrawParticleCallback(const void *calldata1, int calldata2)
1188 {
1189         int additive, texnum, orientation;
1190         float org[3], up2[3], v[3], right[3], up[3], fog, ifog, fogvec[3], cr, cg, cb, ca;
1191         particletexture_t *tex;
1192         rmeshstate_t m;
1193         const particle_t *p = calldata1;
1194
1195         VectorCopy(p->org, org);
1196         orientation = (p->flags >> P_ORIENTATION_FIRSTBIT) & ((1 << P_ORIENTATION_BITS) - 1);
1197         texnum = (p->flags >> P_TEXNUM_FIRSTBIT) & ((1 << P_TEXNUM_BITS) - 1);
1198         //dynlight = p->flags & P_DYNLIGHT;
1199         additive = p->flags & P_ADDITIVE;
1200
1201         memset(&m, 0, sizeof(m));
1202         m.blendfunc1 = GL_SRC_ALPHA;
1203         if (additive)
1204                 m.blendfunc2 = GL_ONE;
1205         else
1206                 m.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
1207         m.tex[0] = R_GetTexture(particlefonttexture);
1208         R_Mesh_Matrix(&r_identitymatrix);
1209         R_Mesh_State(&m);
1210
1211         tex = &particletexture[texnum];
1212         cr = p->color[0] * (1.0f / 255.0f);
1213         cg = p->color[1] * (1.0f / 255.0f);
1214         cb = p->color[2] * (1.0f / 255.0f);
1215         ca = p->alpha * (1.0f / 255.0f);
1216         if (fogenabled)
1217         {
1218                 VectorSubtract(org, r_origin, fogvec);
1219                 fog = exp(fogdensity/DotProduct(fogvec,fogvec));
1220                 ifog = 1 - fog;
1221                 cr = cr * ifog;
1222                 cg = cg * ifog;
1223                 cb = cb * ifog;
1224                 if (!additive)
1225                 {
1226                         cr += fogcolor[0] * fog;
1227                         cg += fogcolor[1] * fog;
1228                         cb += fogcolor[2] * fog;
1229                 }
1230         }
1231         cr *= r_colorscale;
1232         cg *= r_colorscale;
1233         cb *= r_colorscale;
1234
1235         varray_color[ 0] = varray_color[ 4] = varray_color[ 8] = varray_color[12] = cr;
1236         varray_color[ 1] = varray_color[ 5] = varray_color[ 9] = varray_color[13] = cg;
1237         varray_color[ 2] = varray_color[ 6] = varray_color[10] = varray_color[14] = cb;
1238         varray_color[ 3] = varray_color[ 7] = varray_color[11] = varray_color[15] = ca;
1239         varray_texcoord[0][0] = tex->s2;varray_texcoord[0][1] = tex->t1;
1240         varray_texcoord[0][2] = tex->s1;varray_texcoord[0][3] = tex->t1;
1241         varray_texcoord[0][4] = tex->s1;varray_texcoord[0][5] = tex->t2;
1242         varray_texcoord[0][6] = tex->s2;varray_texcoord[0][7] = tex->t2;
1243
1244         if (orientation == PARTICLE_BEAM)
1245         {
1246                 VectorMA(p->org, -p->scaley, p->vel, v);
1247                 VectorMA(p->org, p->scaley, p->vel, up2);
1248                 R_CalcBeamVerts(varray_vertex, v, up2, p->scalex);
1249         }
1250         else if (orientation == PARTICLE_BILLBOARD)
1251         {
1252                 VectorScale(vright, p->scalex, right);
1253                 VectorScale(vup, p->scaley, up);
1254                 varray_vertex[ 0] = org[0] + right[0] - up[0];
1255                 varray_vertex[ 1] = org[1] + right[1] - up[1];
1256                 varray_vertex[ 2] = org[2] + right[2] - up[2];
1257                 varray_vertex[ 4] = org[0] - right[0] - up[0];
1258                 varray_vertex[ 5] = org[1] - right[1] - up[1];
1259                 varray_vertex[ 6] = org[2] - right[2] - up[2];
1260                 varray_vertex[ 8] = org[0] - right[0] + up[0];
1261                 varray_vertex[ 9] = org[1] - right[1] + up[1];
1262                 varray_vertex[10] = org[2] - right[2] + up[2];
1263                 varray_vertex[12] = org[0] + right[0] + up[0];
1264                 varray_vertex[13] = org[1] + right[1] + up[1];
1265                 varray_vertex[14] = org[2] + right[2] + up[2];
1266         }
1267         else if (orientation == PARTICLE_ORIENTED_DOUBLESIDED)
1268         {
1269                 // double-sided
1270                 if (DotProduct(p->vel2, r_origin) > DotProduct(p->vel2, org))
1271                 {
1272                         VectorNegate(p->vel2, v);
1273                         VectorVectors(v, right, up);
1274                 }
1275                 else
1276                         VectorVectors(p->vel2, right, up);
1277                 VectorScale(right, p->scalex, right);
1278                 VectorScale(up, p->scaley, up);
1279                 varray_vertex[ 0] = org[0] + right[0] - up[0];
1280                 varray_vertex[ 1] = org[1] + right[1] - up[1];
1281                 varray_vertex[ 2] = org[2] + right[2] - up[2];
1282                 varray_vertex[ 4] = org[0] - right[0] - up[0];
1283                 varray_vertex[ 5] = org[1] - right[1] - up[1];
1284                 varray_vertex[ 6] = org[2] - right[2] - up[2];
1285                 varray_vertex[ 8] = org[0] - right[0] + up[0];
1286                 varray_vertex[ 9] = org[1] - right[1] + up[1];
1287                 varray_vertex[10] = org[2] - right[2] + up[2];
1288                 varray_vertex[12] = org[0] + right[0] + up[0];
1289                 varray_vertex[13] = org[1] + right[1] + up[1];
1290                 varray_vertex[14] = org[2] + right[2] + up[2];
1291         }
1292         else
1293                 Host_Error("R_DrawParticles: unknown particle orientation %i\n", orientation);
1294         R_Mesh_Draw(4, 2, polygonelements);
1295 }
1296
1297 void R_DrawParticles (void)
1298 {
1299         int i;
1300         float minparticledist;
1301         particle_t *p;
1302
1303         // LordHavoc: early out conditions
1304         if ((!cl_numparticles) || (!r_drawparticles.integer))
1305                 return;
1306
1307         c_particles += cl_numparticles;
1308
1309         minparticledist = DotProduct(r_origin, vpn) + 16.0f;
1310
1311         // LordHavoc: only render if not too close
1312         for (i = 0, p = particles;i < cl_numparticles;i++, p++)
1313                 if (DotProduct(p->org, vpn) >= minparticledist)
1314                         R_MeshQueue_AddTransparent(p->org, R_DrawParticleCallback, p, 0);
1315 }
1316