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
  23 #define MAX_PARTICLES                   16384   // default max # of particles at one time
  24 #define ABSOLUTE_MIN_PARTICLES  512             // no fewer than this no matter what's on the command line
  25
  26 typedef enum
  27 {
  28         pt_static, pt_grav, pt_blob, pt_blob2, pt_bulletsmoke, pt_smoke, pt_snow, pt_rain, pt_spark, pt_bubble, pt_fade, pt_steam, pt_splash, pt_splashpuff, pt_flame, pt_blood, pt_oneframe, pt_lavasplash, pt_raindropsplash, pt_underwaterspark, pt_explosionsplash
  29 }
  30 ptype_t;
  31
  32 typedef struct particle_s
  33 {
  34         ptype_t         type;
  35         int                     orientation; // typically PARTICLE_BILLBOARD
  36         vec3_t          org;
  37         vec3_t          vel;
  38         int                     additive;
  39         int                     tex;
  40         float           die;
  41         float           scalex;
  42         float           scaley;
  43         float           alpha; // 0-255
  44         float           time2; // used for various things (snow fluttering, for example)
  45         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)
  46         vec3_t          oldorg;
  47         vec3_t          vel2; // used for snow fluttering (base velocity, wind for instance)
  48         float           friction; // how much air friction affects this object (objects with a low mass/size ratio tend to get more air friction)
  49         float           pressure; // if non-zero, apply pressure to other particles
  50         int                     dynlight; // if set the particle will be dynamically lit (if cl_dynamicparticles is on), used for smoke and blood
  51         byte            color[4];
  52 }
  53 particle_t;
  54
  55 static int particlepalette[256] =
  56 {
  57         0x000000,0x0f0f0f,0x1f1f1f,0x2f2f2f,0x3f3f3f,0x4b4b4b,0x5b5b5b,0x6b6b6b,
  58         0x7b7b7b,0x8b8b8b,0x9b9b9b,0xababab,0xbbbbbb,0xcbcbcb,0xdbdbdb,0xebebeb,
  59         0x0f0b07,0x170f0b,0x1f170b,0x271b0f,0x2f2313,0x372b17,0x3f2f17,0x4b371b,
  60         0x533b1b,0x5b431f,0x634b1f,0x6b531f,0x73571f,0x7b5f23,0x836723,0x8f6f23,
  61         0x0b0b0f,0x13131b,0x1b1b27,0x272733,0x2f2f3f,0x37374b,0x3f3f57,0x474767,
  62         0x4f4f73,0x5b5b7f,0x63638b,0x6b6b97,0x7373a3,0x7b7baf,0x8383bb,0x8b8bcb,
  63         0x000000,0x070700,0x0b0b00,0x131300,0x1b1b00,0x232300,0x2b2b07,0x2f2f07,
  64         0x373707,0x3f3f07,0x474707,0x4b4b0b,0x53530b,0x5b5b0b,0x63630b,0x6b6b0f,
  65         0x070000,0x0f0000,0x170000,0x1f0000,0x270000,0x2f0000,0x370000,0x3f0000,
  66         0x470000,0x4f0000,0x570000,0x5f0000,0x670000,0x6f0000,0x770000,0x7f0000,
  67         0x131300,0x1b1b00,0x232300,0x2f2b00,0x372f00,0x433700,0x4b3b07,0x574307,
  68         0x5f4707,0x6b4b0b,0x77530f,0x835713,0x8b5b13,0x975f1b,0xa3631f,0xaf6723,
  69         0x231307,0x2f170b,0x3b1f0f,0x4b2313,0x572b17,0x632f1f,0x733723,0x7f3b2b,
  70         0x8f4333,0x9f4f33,0xaf632f,0xbf772f,0xcf8f2b,0xdfab27,0xefcb1f,0xfff31b,
  71         0x0b0700,0x1b1300,0x2b230f,0x372b13,0x47331b,0x533723,0x633f2b,0x6f4733,
  72         0x7f533f,0x8b5f47,0x9b6b53,0xa77b5f,0xb7876b,0xc3937b,0xd3a38b,0xe3b397,
  73         0xab8ba3,0x9f7f97,0x937387,0x8b677b,0x7f5b6f,0x775363,0x6b4b57,0x5f3f4b,
  74         0x573743,0x4b2f37,0x43272f,0x371f23,0x2b171b,0x231313,0x170b0b,0x0f0707,
  75         0xbb739f,0xaf6b8f,0xa35f83,0x975777,0x8b4f6b,0x7f4b5f,0x734353,0x6b3b4b,
  76         0x5f333f,0x532b37,0x47232b,0x3b1f23,0x2f171b,0x231313,0x170b0b,0x0f0707,
  77         0xdbc3bb,0xcbb3a7,0xbfa39b,0xaf978b,0xa3877b,0x977b6f,0x876f5f,0x7b6353,
  78         0x6b5747,0x5f4b3b,0x533f33,0x433327,0x372b1f,0x271f17,0x1b130f,0x0f0b07,
  79         0x6f837b,0x677b6f,0x5f7367,0x576b5f,0x4f6357,0x475b4f,0x3f5347,0x374b3f,
  80         0x2f4337,0x2b3b2f,0x233327,0x1f2b1f,0x172317,0x0f1b13,0x0b130b,0x070b07,
  81         0xfff31b,0xefdf17,0xdbcb13,0xcbb70f,0xbba70f,0xab970b,0x9b8307,0x8b7307,
  82         0x7b6307,0x6b5300,0x5b4700,0x4b3700,0x3b2b00,0x2b1f00,0x1b0f00,0x0b0700,
  83         0x0000ff,0x0b0bef,0x1313df,0x1b1bcf,0x2323bf,0x2b2baf,0x2f2f9f,0x2f2f8f,
  84         0x2f2f7f,0x2f2f6f,0x2f2f5f,0x2b2b4f,0x23233f,0x1b1b2f,0x13131f,0x0b0b0f,
  85         0x2b0000,0x3b0000,0x4b0700,0x5f0700,0x6f0f00,0x7f1707,0x931f07,0xa3270b,
  86         0xb7330f,0xc34b1b,0xcf632b,0xdb7f3b,0xe3974f,0xe7ab5f,0xefbf77,0xf7d38b,
  87         0xa77b3b,0xb79b37,0xc7c337,0xe7e357,0x7fbfff,0xabe7ff,0xd7ffff,0x670000,
  88         0x8b0000,0xb30000,0xd70000,0xff0000,0xfff393,0xfff7c7,0xffffff,0x9f5b53
  89 };
  90
  91 static int explosparkramp[8] = {0x4b0700, 0x6f0f00, 0x931f07, 0xb7330f, 0xcf632b, 0xe3974f, 0xffe7b5, 0xffffff};
  92 //static int explounderwatersparkramp[8] = {0x00074b, 0x000f6f, 0x071f93, 0x0f33b7, 0x2b63cf, 0x4f97e3, 0xb5e7ff, 0xffffff};
  93
  94 // these must match r_part.c's textures
  95 static const int tex_smoke[8] = {0, 1, 2, 3, 4, 5, 6, 7};
  96 static const int tex_rainsplash[16] = {8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23};
  97 static const int tex_particle = 24;
  98 static const int tex_rain = 25;
  99 static const int tex_bubble = 26;
 100 static const int tex_rocketglow = 27;
 101
 102 static int                      cl_maxparticles;
 103 static int                      cl_numparticles;
 104 static particle_t       *particles;
 105 static particle_t       **freeparticles; // list used only in compacting particles array
 106 static renderparticle_t *cl_renderparticles;
 107
 108 static cvar_t cl_particles = {CVAR_SAVE, "cl_particles", "1"};
 109 static cvar_t cl_particles_size = {CVAR_SAVE, "cl_particles_size", "1"};
 110 static cvar_t cl_particles_bloodshowers = {CVAR_SAVE, "cl_particles_bloodshowers", "1"};
 111 static cvar_t cl_particles_blood = {CVAR_SAVE, "cl_particles_blood", "1"};
 112 static cvar_t cl_particles_smoke = {CVAR_SAVE, "cl_particles_smoke", "1"};
 113 static cvar_t cl_particles_sparks = {CVAR_SAVE, "cl_particles_sparks", "1"};
 114 static cvar_t cl_particles_bubbles = {CVAR_SAVE, "cl_particles_bubbles", "1"};
 115 static cvar_t cl_particles_explosions = {CVAR_SAVE, "cl_particles_explosions", "0"};
 116
 117 static mempool_t *cl_part_mempool;
 118
 119 void CL_Particles_Clear(void)
 120 {
 121         cl_numparticles = 0;
 122 }
 123
 124 /*
 125 ===============
 126 CL_InitParticles
 127 ===============
 128 */
 129 void CL_ReadPointFile_f (void);
 130 void CL_Particles_Init (void)
 131 {
 132         int             i;
 133
 134         i = COM_CheckParm ("-particles");
 135
 136         if (i)
 137         {
 138                 cl_maxparticles = (int)(atoi(com_argv[i+1]));
 139                 if (cl_maxparticles < ABSOLUTE_MIN_PARTICLES)
 140                         cl_maxparticles = ABSOLUTE_MIN_PARTICLES;
 141         }
 142         else
 143                 cl_maxparticles = MAX_PARTICLES;
 144
 145         Cmd_AddCommand ("pointfile", CL_ReadPointFile_f);
 146
 147         Cvar_RegisterVariable (&cl_particles);
 148         Cvar_RegisterVariable (&cl_particles_size);
 149         Cvar_RegisterVariable (&cl_particles_bloodshowers);
 150         Cvar_RegisterVariable (&cl_particles_blood);
 151         Cvar_RegisterVariable (&cl_particles_smoke);
 152         Cvar_RegisterVariable (&cl_particles_sparks);
 153         Cvar_RegisterVariable (&cl_particles_bubbles);
 154         Cvar_RegisterVariable (&cl_particles_explosions);
 155
 156         cl_part_mempool = Mem_AllocPool("CL_Part");
 157         particles = (particle_t *) Mem_Alloc(cl_part_mempool, cl_maxparticles * sizeof(particle_t));
 158         freeparticles = (void *) Mem_Alloc(cl_part_mempool, cl_maxparticles * sizeof(particle_t *));
 159         cl_numparticles = 0;
 160
 161         // FIXME: r_refdef stuff should be allocated somewhere else?
 162         r_refdef.particles = cl_renderparticles = Mem_Alloc(cl_refdef_mempool, cl_maxparticles * sizeof(renderparticle_t));
 163 }
 164
 165 #define particle(ptype, porientation, pcolor, ptex, plight, padditive, pscalex, pscaley, palpha, ptime, pbounce, px, py, pz, pvx, pvy, pvz, ptime2, pvx2, pvy2, pvz2, pfriction, ppressure)\
 166 {\
 167         particle_t      *part;\
 168         int tempcolor;\
 169         if (cl_numparticles >= cl_maxparticles)\
 170                 return;\
 171         part = &particles[cl_numparticles++];\
 172         part->type = (ptype);\
 173         tempcolor = (pcolor);\
 174         part->color[0] = ((tempcolor) >> 16) & 0xFF;\
 175         part->color[1] = ((tempcolor) >> 8) & 0xFF;\
 176         part->color[2] = (tempcolor) & 0xFF;\
 177         part->color[3] = 0xFF;\
 178         part->tex = (ptex);\
 179         part->orientation = (porientation);\
 180         part->dynlight = (plight);\
 181         part->additive = (padditive);\
 182         part->scalex = (pscalex);\
 183         part->scaley = (pscaley);\
 184         part->alpha = (palpha);\
 185         part->die = cl.time + (ptime);\
 186         part->bounce = (pbounce);\
 187         part->org[0] = (px);\
 188         part->org[1] = (py);\
 189         part->org[2] = (pz);\
 190         part->vel[0] = (pvx);\
 191         part->vel[1] = (pvy);\
 192         part->vel[2] = (pvz);\
 193         part->time2 = (ptime2);\
 194         part->vel2[0] = (pvx2);\
 195         part->vel2[1] = (pvy2);\
 196         part->vel2[2] = (pvz2);\
 197         part->friction = (pfriction);\
 198         part->pressure = (ppressure);\
 199 }
 200
 201 /*
 202 ===============
 203 CL_EntityParticles
 204 ===============
 205 */
 206 void CL_EntityParticles (entity_t *ent)
 207 {
 208         int                     i;
 209         float           angle;
 210         float           sp, sy, cp, cy;
 211         vec3_t          forward;
 212         float           dist;
 213         float           beamlength;
 214         static vec3_t avelocities[NUMVERTEXNORMALS];
 215         if (!cl_particles.integer) return;
 216
 217         dist = 64;
 218         beamlength = 16;
 219
 220         if (!avelocities[0][0])
 221                 for (i=0 ; i<NUMVERTEXNORMALS*3 ; i++)
 222                         avelocities[0][i] = (rand()&255) * 0.01;
 223
 224         for (i=0 ; i<NUMVERTEXNORMALS ; i++)
 225         {
 226                 angle = cl.time * avelocities[i][0];
 227                 sy = sin(angle);
 228                 cy = cos(angle);
 229                 angle = cl.time * avelocities[i][1];
 230                 sp = sin(angle);
 231                 cp = cos(angle);
 232
 233                 forward[0] = cp*cy;
 234                 forward[1] = cp*sy;
 235                 forward[2] = -sp;
 236
 237                 particle(pt_oneframe, PARTICLE_BILLBOARD, particlepalette[0x6f], tex_particle, false, true, 2, 2, 255, 9999, 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);
 238         }
 239 }
 240
 241
 242 void CL_ReadPointFile_f (void)
 243 {
 244         vec3_t  org;
 245         int             r, c;
 246         char    *pointfile, *pointfilepos, *t, tchar;
 247
 248         pointfile = COM_LoadFile(va("maps/%s.pts", sv.name), true);
 249         if (!pointfile)
 250         {
 251                 Con_Printf ("couldn't open %s.pts\n", sv.name);
 252                 return;
 253         }
 254
 255         Con_Printf ("Reading %s.pts...\n", sv.name);
 256         c = 0;
 257         pointfilepos = pointfile;
 258         while (*pointfilepos)
 259         {
 260                 while (*pointfilepos == '\n' || *pointfilepos == '\r')
 261                         pointfilepos++;
 262                 if (!*pointfilepos)
 263                         break;
 264                 t = pointfilepos;
 265                 while (*t && *t != '\n' && *t != '\r')
 266                         t++;
 267                 tchar = *t;
 268                 *t = 0;
 269                 r = sscanf (pointfilepos,"%f %f %f", &org[0], &org[1], &org[2]);
 270                 *t = tchar;
 271                 pointfilepos = t;
 272                 if (r != 3)
 273                         break;
 274                 c++;
 275
 276                 if (cl_numparticles >= cl_maxparticles)
 277                 {
 278                         Con_Printf ("Not enough free particles\n");
 279                         break;
 280                 }
 281                 particle(pt_static, PARTICLE_BILLBOARD, particlepalette[(-c)&15], tex_particle, false, false, 2, 2, 255, 99999, 0, org[0], org[1], org[2], 0, 0, 0, 0, 0, 0, 0, 0, 0);
 282         }
 283
 284         Mem_Free(pointfile);
 285         Con_Printf ("%i points read\n", c);
 286 }
 287
 288 /*
 289 ===============
 290 CL_ParseParticleEffect
 291
 292 Parse an effect out of the server message
 293 ===============
 294 */
 295 void CL_ParseParticleEffect (void)
 296 {
 297         vec3_t          org, dir;
 298         int                     i, count, msgcount, color;
 299
 300         for (i=0 ; i<3 ; i++)
 301                 org[i] = MSG_ReadCoord ();
 302         for (i=0 ; i<3 ; i++)
 303                 dir[i] = MSG_ReadChar () * (1.0/16);
 304         msgcount = MSG_ReadByte ();
 305         color = MSG_ReadByte ();
 306
 307         if (msgcount == 255)
 308                 count = 1024;
 309         else
 310                 count = msgcount;
 311
 312         CL_RunParticleEffect (org, dir, color, count);
 313 }
 314
 315 /*
 316 ===============
 317 CL_ParticleExplosion
 318
 319 ===============
 320 */
 321 void CL_ParticleExplosion (vec3_t org, int smoke)
 322 {
 323         if (cl_particles.integer && cl_particles_explosions.integer)
 324         {
 325                 int i, j;
 326                 float f;
 327                 vec3_t v, end, ang;
 328                 byte noise1[32*32], noise2[32*32];
 329
 330                 VectorClear(end); // hush MSVC
 331                 i = Mod_PointInLeaf(org, cl.worldmodel)->contents;
 332                 if (i == CONTENTS_SLIME || i == CONTENTS_WATER)
 333                 {
 334                         for (i = 0;i < 128;i++)
 335                                 particle(pt_bubble, PARTICLE_BILLBOARD, 0xFFFFFF, tex_bubble, false, true, 2, 2, 255, 9999, 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, 0, 0);
 336
 337                         ang[2] = lhrandom(0, 360);
 338                         fractalnoisequick(noise1, 32, 4);
 339                         fractalnoisequick(noise2, 32, 8);
 340                         for (i = 0;i < 32;i++)
 341                         {
 342                                 for (j = 0;j < 32;j++)
 343                                 {
 344                                         VectorRandom(v);
 345                                         VectorMA(org, 16, v, v);
 346                                         TraceLine(org, v, end, NULL, 0, true);
 347                                         ang[0] = (j + 0.5f) * (360.0f / 32.0f);
 348                                         ang[1] = (i + 0.5f) * (360.0f / 32.0f);
 349                                         AngleVectors(ang, v, NULL, NULL);
 350                                         f = noise1[j*32+i] * 1.5f;
 351                                         VectorScale(v, f, v);
 352                                         particle(pt_underwaterspark, PARTICLE_BILLBOARD, noise2[j*32+i] * 0x010101, tex_smoke[rand()&7], false, false, 10, 10, lhrandom(128, 255), 9999, 1.5, end[0], end[1], end[2], v[0], v[1], v[2], 512.0f, 0, 0, 0, 2, 0);
 353                                         VectorScale(v, 0.75, v);
 354                                         particle(pt_underwaterspark, PARTICLE_BILLBOARD, explosparkramp[(noise2[j*32+i] >> 5)], tex_particle, false, true, 10, 10, lhrandom(128, 255), 9999, 1.5, end[0], end[1], end[2], v[0], v[1], v[2], 512.0f, 0, 0, 0, 2, 0);
 355                                 }
 356                         }
 357                 }
 358                 else
 359                 {
 360                         ang[2] = lhrandom(0, 360);
 361                         fractalnoisequick(noise1, 32, 4);
 362                         fractalnoisequick(noise2, 32, 8);
 363                         for (i = 0;i < 32;i++)
 364                         {
 365                                 for (j = 0;j < 32;j++)
 366                                 {
 367                                         VectorRandom(v);
 368                                         VectorMA(org, 16, v, v);
 369                                         TraceLine(org, v, end, NULL, 0, true);
 370                                         ang[0] = (j + 0.5f) * (360.0f / 32.0f);
 371                                         ang[1] = (i + 0.5f) * (360.0f / 32.0f);
 372                                         AngleVectors(ang, v, NULL, NULL);
 373                                         f = noise1[j*32+i] * 1.5f;
 374                                         VectorScale(v, f, v);
 375                                         particle(pt_spark, PARTICLE_BILLBOARD, noise2[j*32+i] * 0x010101, tex_smoke[rand()&7], false, false, 10, 10, lhrandom(128, 255), 9999, 1.5, end[0], end[1], end[2], v[0], v[1], v[2] + 160.0f, 512.0f, 0, 0, 0, 2, 0);
 376                                         VectorScale(v, 0.75, v);
 377                                         particle(pt_spark, PARTICLE_BILLBOARD, explosparkramp[(noise2[j*32+i] >> 5)], tex_particle, false, true, 10, 10, lhrandom(128, 255), 9999, 1.5, end[0], end[1], end[2], v[0], v[1], v[2] + 160.0f, 512.0f, 0, 0, 0, 2, 0);
 378                                 //      VectorRandom(v);
 379                                 //      VectorScale(v, 384, v);
 380                                 //      particle(pt_spark, PARTICLE_BILLBOARD, explosparkramp[rand()&7], tex_particle, false, true, 2, 2, lhrandom(16, 255), 9999, 1.5, end[0], end[1], end[2], v[0], v[1], v[2] + 160.0f, 512.0f, 0, 0, 0, 2, 0);
 381                                 }
 382                         }
 383                 }
 384         }
 385         else
 386                 R_NewExplosion(org);
 387         R_Stain(org, 96, 80, 80, 80, 128, 176, 176, 176, 128);
 388 }
 389
 390 /*
 391 ===============
 392 CL_ParticleExplosion2
 393
 394 ===============
 395 */
 396 void CL_ParticleExplosion2 (vec3_t org, int colorStart, int colorLength)
 397 {
 398         int                     i;
 399         if (!cl_particles.integer) return;
 400
 401         for (i = 0;i < 512;i++)
 402                 particle(pt_fade, PARTICLE_BILLBOARD, particlepalette[colorStart + (i % colorLength)], tex_particle, false, false, 1.5, 1.5, 255, 0.3, 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, 0.1f, 0);
 403 }
 404
 405 /*
 406 ===============
 407 CL_BlobExplosion
 408
 409 ===============
 410 */
 411 void CL_BlobExplosion (vec3_t org)
 412 {
 413         int                     i;
 414         if (!cl_particles.integer) return;
 415
 416         R_Stain(org, 96, 96, 64, 96, 128, 160, 128, 160, 128);
 417         for (i = 0;i < 256;i++)
 418                 particle(pt_blob , PARTICLE_BILLBOARD, particlepalette[ 66+(rand()%6)], tex_particle, false, true, 4, 4, 255, 9999, 0, org[0] + lhrandom(-16, 16), org[1] + lhrandom(-16, 16), org[2] + lhrandom(-16, 16), lhrandom(-4, 4), lhrandom(-4, 4), lhrandom(-128, 128), 0, 0, 0, 0, 0, 0);
 419         for (i = 0;i < 256;i++)
 420                 particle(pt_blob2, PARTICLE_BILLBOARD, particlepalette[150+(rand()%6)], tex_particle, false, true, 4, 4, 255, 9999, 0, org[0] + lhrandom(-16, 16), org[1] + lhrandom(-16, 16), org[2] + lhrandom(-16, 16), lhrandom(-4, 4), lhrandom(-4, 4), lhrandom(-128, 128), 0, 0, 0, 0, 0, 0);
 421 }
 422
 423 /*
 424 ===============
 425 CL_RunParticleEffect
 426
 427 ===============
 428 */
 429 void CL_RunParticleEffect (vec3_t org, vec3_t dir, int color, int count)
 430 {
 431         if (!cl_particles.integer) return;
 432
 433         if (count == 1024)
 434         {
 435                 CL_ParticleExplosion(org, false);
 436                 return;
 437         }
 438         while (count--)
 439                 particle(pt_fade, PARTICLE_BILLBOARD, particlepalette[color + (rand()&7)], tex_particle, false, false, 1, 1, 128, 9999, 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);
 440 }
 441
 442 // LordHavoc: added this for spawning sparks/dust (which have strong gravity)
 443 /*
 444 ===============
 445 CL_SparkShower
 446 ===============
 447 */
 448 void CL_SparkShower (vec3_t org, vec3_t dir, int count)
 449 {
 450         if (!cl_particles.integer) return;
 451
 452         R_Stain(org, 32, 96, 96, 96, 32, 128, 128, 128, 32);
 453
 454         // smoke puff
 455         if (cl_particles_smoke.integer)
 456                 particle(pt_bulletsmoke, PARTICLE_BILLBOARD, 0xA0A0A0, tex_smoke[rand()&7], true, true, 5, 5, 255, 9999, 0, org[0], org[1], org[2], lhrandom(-8, 8), lhrandom(-8, 8), lhrandom(0, 16), 0, 0, 0, 0, 0, 0);
 457
 458         if (cl_particles_sparks.integer)
 459         {
 460                 // sparks
 461                 while(count--)
 462                         particle(pt_spark, PARTICLE_BILLBOARD, particlepalette[0x68 + (rand() & 7)], tex_particle, false, true, 1, 1, lhrandom(0, 255), 9999, 1.5, org[0], org[1], org[2], lhrandom(-64, 64) + dir[0], lhrandom(-64, 64) + dir[1], lhrandom(0, 128) + dir[2], 512.0f, 0, 0, 0, 0.2f, 0);
 463         }
 464 }
 465
 466 void CL_PlasmaBurn (vec3_t org)
 467 {
 468         if (!cl_particles.integer) return;
 469
 470         R_Stain(org, 48, 96, 96, 96, 48, 128, 128, 128, 48);
 471 }
 472
 473 void CL_BloodPuff (vec3_t org, vec3_t vel, int count)
 474 {
 475         // bloodcount is used to accumulate counts too small to cause a blood particle
 476         static int bloodcount = 0;
 477         if (!cl_particles.integer) return;
 478         if (!cl_particles_blood.integer) return;
 479
 480         if (count > 100)
 481                 count = 100;
 482         bloodcount += count;
 483         while(bloodcount >= 10)
 484         {
 485                 particle(pt_blood, PARTICLE_BILLBOARD, 0x300000, tex_smoke[rand()&7], true, false, 24, 24, 255, 9999, -1, org[0], org[1], org[2], vel[0] + lhrandom(-64, 64), vel[1] + lhrandom(-64, 64), vel[2] + lhrandom(-64, 64), 0, 0, 0, 0, 1.0f, 0);
 486                 bloodcount -= 10;
 487         }
 488 }
 489
 490 void CL_BloodShower (vec3_t mins, vec3_t maxs, float velspeed, int count)
 491 {
 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         while (count--)
 507         {
 508                 vec3_t org, vel;
 509                 org[0] = lhrandom(mins[0], maxs[0]);
 510                 org[1] = lhrandom(mins[1], maxs[1]);
 511                 org[2] = lhrandom(mins[2], maxs[2]);
 512                 vel[0] = (org[0] - center[0]) * velscale[0];
 513                 vel[1] = (org[1] - center[1]) * velscale[1];
 514                 vel[2] = (org[2] - center[2]) * velscale[2];
 515                 particle(pt_blood, PARTICLE_BILLBOARD, 0x300000, tex_smoke[rand()&7], true, false, 24, 24, 255, 9999, -1, org[0], org[1], org[2], vel[0], vel[1], vel[2], 0, 0, 0, 0, 1.0f, 0);
 516         }
 517 }
 518
 519 void CL_ParticleCube (vec3_t mins, vec3_t maxs, vec3_t dir, int count, int colorbase, int gravity, int randomvel)
 520 {
 521         float           t;
 522         if (!cl_particles.integer) return;
 523         if (maxs[0] <= mins[0]) {t = mins[0];mins[0] = maxs[0];maxs[0] = t;}
 524         if (maxs[1] <= mins[1]) {t = mins[1];mins[1] = maxs[1];maxs[1] = t;}
 525         if (maxs[2] <= mins[2]) {t = mins[2];mins[2] = maxs[2];maxs[2] = t;}
 526
 527         while (count--)
 528                 particle(gravity ? pt_grav : pt_static, PARTICLE_BILLBOARD, particlepalette[colorbase + (rand()&3)], tex_particle, false, false, 2, 2, 255, lhrandom(1, 2), 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);
 529 }
 530
 531 void CL_ParticleRain (vec3_t mins, vec3_t maxs, vec3_t dir, int count, int colorbase, int type)
 532 {
 533         vec3_t          vel;
 534         float           t, z;
 535         if (!cl_particles.integer) return;
 536         if (maxs[0] <= mins[0]) {t = mins[0];mins[0] = maxs[0];maxs[0] = t;}
 537         if (maxs[1] <= mins[1]) {t = mins[1];mins[1] = maxs[1];maxs[1] = t;}
 538         if (maxs[2] <= mins[2]) {t = mins[2];mins[2] = maxs[2];maxs[2] = t;}
 539         if (dir[2] < 0) // falling
 540         {
 541                 t = (maxs[2] - mins[2]) / -dir[2];
 542                 z = maxs[2];
 543         }
 544         else // rising??
 545         {
 546                 t = (maxs[2] - mins[2]) / dir[2];
 547                 z = mins[2];
 548         }
 549         if (t < 0 || t > 2) // sanity check
 550                 t = 2;
 551
 552         switch(type)
 553         {
 554         case 0:
 555                 count *= 4; // ick, this should be in the mod or maps?
 556
 557                 while(count--)
 558                 {
 559                         vel[0] = dir[0] + lhrandom(-16, 16);
 560                         vel[1] = dir[1] + lhrandom(-16, 16);
 561                         vel[2] = dir[2] + lhrandom(-32, 32);
 562                         particle(pt_rain, PARTICLE_UPRIGHT_FACING, particlepalette[colorbase + (rand()&3)], tex_particle, true, true, 1, 64, 64, t, 0, lhrandom(mins[0], maxs[0]), lhrandom(mins[1], maxs[1]), z, vel[0], vel[1], vel[2], 0, vel[0], vel[1], vel[2], 0, 0);
 563                 }
 564                 break;
 565         case 1:
 566                 while(count--)
 567                 {
 568                         vel[0] = dir[0] + lhrandom(-16, 16);
 569                         vel[1] = dir[1] + lhrandom(-16, 16);
 570                         vel[2] = dir[2] + lhrandom(-32, 32);
 571                         particle(pt_snow, PARTICLE_BILLBOARD, particlepalette[colorbase + (rand()&3)], tex_particle, false, true, 2, 2, 255, t, 0, lhrandom(mins[0], maxs[0]), lhrandom(mins[1], maxs[1]), z, vel[0], vel[1], vel[2], 0, vel[0], vel[1], vel[2], 0, 0);
 572                 }
 573                 break;
 574         default:
 575                 Host_Error("CL_ParticleRain: unknown type %i (0 = rain, 1 = snow)\n", type);
 576         }
 577 }
 578
 579 void CL_FlameCube (vec3_t mins, vec3_t maxs, int count)
 580 {
 581         float           t;
 582         if (!cl_particles.integer) return;
 583         if (maxs[0] <= mins[0]) {t = mins[0];mins[0] = maxs[0];maxs[0] = t;}
 584         if (maxs[1] <= mins[1]) {t = mins[1];mins[1] = maxs[1];maxs[1] = t;}
 585         if (maxs[2] <= mins[2]) {t = mins[2];mins[2] = maxs[2];maxs[2] = t;}
 586
 587         while (count--)
 588                 particle(pt_flame, PARTICLE_BILLBOARD, particlepalette[224 + (rand()&15)], tex_particle, false, true, 8, 8, 255, 9999, 1.1, lhrandom(mins[0], maxs[0]), lhrandom(mins[1], maxs[1]), lhrandom(mins[2], maxs[2]), lhrandom(-32, 32), lhrandom(-32, 32), lhrandom(-32, 64), 0, 0, 0, 0, 0.1f, 0);
 589 }
 590
 591 void CL_Flames (vec3_t org, vec3_t vel, int count)
 592 {
 593         if (!cl_particles.integer) return;
 594
 595         while (count--)
 596                 particle(pt_flame, PARTICLE_BILLBOARD, particlepalette[224 + (rand()&15)], tex_particle, false, true, 8, 8, 255, 9999, 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, 0.1f, 0);
 597 }
 598
 599
 600
 601 /*
 602 ===============
 603 CL_LavaSplash
 604
 605 ===============
 606 */
 607 void CL_LavaSplash (vec3_t origin)
 608 {
 609         int                     i, j;
 610         float           vel;
 611         vec3_t          dir, org;
 612         if (!cl_particles.integer) return;
 613
 614         for (i=-128 ; i<128 ; i+=16)
 615         {
 616                 for (j=-128 ; j<128 ; j+=16)
 617                 {
 618                         dir[0] = j + lhrandom(0, 8);
 619                         dir[1] = i + lhrandom(0, 8);
 620                         dir[2] = 256;
 621                         org[0] = origin[0] + dir[0];
 622                         org[1] = origin[1] + dir[1];
 623                         org[2] = origin[2] + lhrandom(0, 64);
 624                         vel = lhrandom(50, 120) / VectorLength(dir); // normalize and scale
 625                         particle(pt_lavasplash, PARTICLE_BILLBOARD, particlepalette[224 + (rand()&7)], tex_particle, false, true, 7, 7, 255, 9999, 0, org[0], org[1], org[2], dir[0] * vel, dir[1] * vel, dir[2] * vel, 0, 0, 0, 0, 0, 0);
 626                 }
 627         }
 628 }
 629
 630 /*
 631 ===============
 632 CL_TeleportSplash
 633
 634 ===============
 635 */
 636 void CL_TeleportSplash (vec3_t org)
 637 {
 638         int                     i, j, k;
 639         if (!cl_particles.integer) return;
 640
 641         for (i=-16 ; i<16 ; i+=8)
 642                 for (j=-16 ; j<16 ; j+=8)
 643                         for (k=-24 ; k<32 ; k+=8)
 644                                 particle(pt_fade, PARTICLE_BILLBOARD, 0xFFFFFF, tex_particle, false, true, 1.5, 1.5, lhrandom(64, 128), 9999, 0, org[0] + i + lhrandom(0, 8), org[1] + j + lhrandom(0, 8), org[2] + k + lhrandom(0, 8), i*2 + lhrandom(-12.5, 12.5), j*2 + lhrandom(-12.5, 12.5), k*2 + lhrandom(27.5, 52.5), 0, 0, 0, 0, 0.1f, -512.0f);
 645 }
 646
 647 void CL_RocketTrail (vec3_t start, vec3_t end, int type, entity_t *ent)
 648 {
 649         vec3_t          vec, dir, vel;
 650         float           len, dec = 0, speed;
 651         int                     contents, bubbles;
 652         double          t;
 653         if (!cl_particles.integer) return;
 654
 655         VectorSubtract(end, start, dir);
 656         VectorNormalize(dir);
 657
 658         //if (type == 0 && host_frametime != 0) // rocket glow
 659         //      particle(pt_oneframe, PARTICLE_BILLBOARD, 0xFFFFFF, tex_rocketglow, false, true, 24, 24, 255, 9999, 0, end[0] - 12 * dir[0], end[1] - 12 * dir[1], end[2] - 12 * dir[2], 0, 0, 0, 0, 0, 0, 0, 0, 0);
 660
 661         t = ent->persistent.trail_time;
 662         if (t >= cl.time)
 663                 return; // no particles to spawn this frame (sparse trail)
 664
 665         if (t < cl.oldtime)
 666                 t = cl.oldtime;
 667
 668         VectorSubtract (end, start, vec);
 669         len = VectorNormalizeLength (vec);
 670         if (len <= 0.01f)
 671         {
 672                 // advance the trail time
 673                 ent->persistent.trail_time = cl.time;
 674                 return;
 675         }
 676         speed = len / (cl.time - cl.oldtime);
 677         VectorScale(vec, speed, vel);
 678
 679         // advance into this frame to reach the first puff location
 680         dec = t - cl.oldtime;
 681         dec *= speed;
 682         VectorMA(start, dec, vec, start);
 683
 684         contents = Mod_PointInLeaf(start, cl.worldmodel)->contents;
 685         if (contents == CONTENTS_SKY || contents == CONTENTS_LAVA)
 686         {
 687                 // advance the trail time
 688                 ent->persistent.trail_time = cl.time;
 689                 return;
 690         }
 691
 692         bubbles = (contents == CONTENTS_WATER || contents == CONTENTS_SLIME);
 693
 694         while (t < cl.time)
 695         {
 696                 switch (type)
 697                 {
 698                         case 0: // rocket trail
 699                                 if (!cl_particles_smoke.integer)
 700                                         dec = cl.time - t;
 701                                 else if (bubbles && cl_particles_bubbles.integer)
 702                                 {
 703                                         dec = 0.005f;
 704                                         particle(pt_bubble, PARTICLE_BILLBOARD, 0xFFFFFF, tex_bubble, false, true, 2, 2, 255, 9999, 1.5, start[0], start[1], start[2], lhrandom(-16, 16), lhrandom(-16, 16), lhrandom(-16, 16), 0, 0, 0, 0, 0, 0);
 705                                         particle(pt_bubble, PARTICLE_BILLBOARD, 0xFFFFFF, tex_bubble, false, true, 2, 2, 255, 9999, 1.5, start[0], start[1], start[2], lhrandom(-16, 16), lhrandom(-16, 16), lhrandom(-16, 16), 0, 0, 0, 0, 0, 0);
 706                                         particle(pt_smoke, PARTICLE_BILLBOARD, 0xFFFFFF, tex_smoke[rand()&7], false, false, 2, 2, 160, 9999, 0, start[0], start[1], start[2], 0, 0, 0, 0, 0, 0, 0, 0, 0);
 707                                 }
 708                                 else
 709                                 {
 710                                         dec = 0.005f;
 711                                         particle(pt_smoke, PARTICLE_BILLBOARD, 0xC0C0C0, tex_smoke[rand()&7], true, false, 2, 2, 160, 9999, 0, start[0], start[1], start[2], 0, 0, 0, 0, 0, 0, 0, 0, 0);
 712                                         //particle(pt_spark, PARTICLE_BILLBOARD, particlepalette[0x68 + (rand() & 7)], tex_particle, false, true, 1, 1, lhrandom(128, 255), 9999, 1.5, start[0], start[1], start[2], lhrandom(-64, 64) - vel[0] * 0.0625, lhrandom(-64, 64) - vel[1] * 0.0625, lhrandom(-64, 64) - vel[2] * 0.0625, 512.0f, 0, 0, 0, 0.1f, 0);
 713                                         //particle(pt_spark, PARTICLE_BILLBOARD, particlepalette[0x68 + (rand() & 7)], tex_particle, false, true, 1, 1, lhrandom(128, 255), 9999, 1.5, start[0], start[1], start[2], lhrandom(-64, 64) - vel[0] * 0.0625, lhrandom(-64, 64) - vel[1] * 0.0625, lhrandom(-64, 64) - vel[2] * 0.0625, 512.0f, 0, 0, 0, 0.1f, 0);
 714                                         //particle(pt_spark, PARTICLE_BILLBOARD, particlepalette[0x68 + (rand() & 7)], tex_particle, false, true, 1, 1, lhrandom(128, 255), 9999, 1.5, start[0], start[1], start[2], lhrandom(-64, 64) - vel[0] * 0.0625, lhrandom(-64, 64) - vel[1] * 0.0625, lhrandom(-64, 64) - vel[2] * 0.0625, 512.0f, 0, 0, 0, 0.1f, 0);
 715                                         //particle(pt_spark, PARTICLE_BILLBOARD, particlepalette[0x68 + (rand() & 7)], tex_particle, false, true, 1, 1, lhrandom(128, 255), 9999, 1.5, start[0], start[1], start[2], lhrandom(-64, 64) - vel[0] * 0.0625, lhrandom(-64, 64) - vel[1] * 0.0625, lhrandom(-64, 64) - vel[2] * 0.0625, 512.0f, 0, 0, 0, 0.1f, 0);
 716                                 }
 717                                 break;
 718
 719                         case 1: // grenade trail
 720                                 // FIXME: make it gradually stop smoking
 721                                 if (!cl_particles_smoke.integer)
 722                                         dec = cl.time - t;
 723                                 else if (bubbles && cl_particles_bubbles.integer)
 724                                 {
 725                                         dec = 0.02f;
 726                                         particle(pt_bubble, PARTICLE_BILLBOARD, 0xFFFFFF, tex_bubble, false, true, 2, 2, 255, 9999, 1.5, start[0], start[1], start[2], lhrandom(-16, 16), lhrandom(-16, 16), lhrandom(-16, 16), 0, 0, 0, 0, 0, 0);
 727                                         particle(pt_bubble, PARTICLE_BILLBOARD, 0xFFFFFF, tex_bubble, false, true, 2, 2, 255, 9999, 1.5, start[0], start[1], start[2], lhrandom(-16, 16), lhrandom(-16, 16), lhrandom(-16, 16), 0, 0, 0, 0, 0, 0);
 728                                         particle(pt_smoke, PARTICLE_BILLBOARD, 0xFFFFFF, tex_smoke[rand()&7], false, false, 2, 2, 160, 9999, 0, start[0], start[1], start[2], 0, 0, 0, 0, 0, 0, 0, 0, 0);
 729                                 }
 730                                 else
 731                                 {
 732                                         dec = 0.02f;
 733                                         particle(pt_smoke, PARTICLE_BILLBOARD, 0x808080, tex_smoke[rand()&7], true, false, 2, 2, 160, 9999, 0, start[0], start[1], start[2], 0, 0, 0, 0, 0, 0, 0, 0, 0);
 734                                 }
 735                                 break;
 736
 737
 738                         case 2: // blood
 739                                 if (!cl_particles_blood.integer)
 740                                         dec = cl.time - t;
 741                                 else
 742                                 {
 743                                         dec = 0.1f;
 744                                         particle(pt_blood, PARTICLE_BILLBOARD, 0x300000, tex_smoke[rand()&7], true, false, 24, 24, 255, 9999, -1, start[0], start[1], start[2], vel[0] + lhrandom(-64, 64), vel[1] + lhrandom(-64, 64), vel[2] + lhrandom(-64, 64), 0, 0, 0, 0, 1.0f, 0);
 745                                 }
 746                                 break;
 747
 748                         case 4: // slight blood
 749                                 if (!cl_particles_blood.integer)
 750                                         dec = cl.time - t;
 751                                 else
 752                                 {
 753                                         dec = 0.15f;
 754                                         particle(pt_blood, PARTICLE_BILLBOARD, 0x300000, tex_smoke[rand()&7], true, false, 24, 24, 255, 9999, -1, start[0], start[1], start[2], vel[0] + lhrandom(-64, 64), vel[1] + lhrandom(-64, 64), vel[2] + lhrandom(-64, 64), 0, 0, 0, 0, 1.0f, 0);
 755                                 }
 756                                 break;
 757
 758                         case 3: // green tracer
 759                                 dec = 0.02f;
 760                                 particle(pt_fade, PARTICLE_BILLBOARD, 0x373707, tex_smoke[rand()&7], false, false, 4, 4, 255, 9999, 0, start[0], start[1], start[2], 0, 0, 0, 0, 0, 0, 0, 0, 0);
 761                                 break;
 762
 763                         case 5: // flame tracer
 764                                 dec = 0.02f;
 765                                 particle(pt_fade, PARTICLE_BILLBOARD, 0xCF632B, tex_smoke[rand()&7], false, false, 4, 4, 255, 9999, 0, start[0], start[1], start[2], 0, 0, 0, 0, 0, 0, 0, 0, 0);
 766                                 break;
 767
 768                         case 6: // voor trail
 769                                 dec = 0.05f; // sparse trail
 770                                 particle(pt_fade, PARTICLE_BILLBOARD, 0x47232B, tex_smoke[rand()&7], false, false, 4, 4, 255, 9999, 0, start[0], start[1], start[2], 0, 0, 0, 0, 0, 0, 0, 0, 0);
 771                                 break;
 772
 773                         case 7: // Nehahra smoke tracer
 774                                 if (!cl_particles_smoke.integer)
 775                                         dec = cl.time - t;
 776                                 else
 777                                 {
 778                                         dec = 0.14f;
 779                                         particle(pt_smoke, PARTICLE_BILLBOARD, 0xC0C0C0, tex_smoke[rand()&7], true, false, 10, 10, 64, 9999, 0, start[0], start[1], start[2], 0, 0, 0, 0, 0, 0, 0, 0, 0);
 780                                 }
 781                                 break;
 782                 }
 783
 784                 // advance to next time and position
 785                 t += dec;
 786                 dec *= speed;
 787                 VectorMA (start, dec, vec, start);
 788         }
 789         ent->persistent.trail_time = t;
 790 }
 791
 792 void CL_RocketTrail2 (vec3_t start, vec3_t end, int color, entity_t *ent)
 793 {
 794         vec3_t          vec;
 795         int                     len;
 796         if (!cl_particles.integer) return;
 797         if (!cl_particles_smoke.integer) return;
 798
 799         VectorSubtract (end, start, vec);
 800         len = (int) (VectorNormalizeLength (vec) * (1.0f / 3.0f));
 801         VectorScale(vec, 3, vec);
 802         color = particlepalette[color];
 803         while (len--)
 804         {
 805                 particle(pt_smoke, PARTICLE_BILLBOARD, color, tex_particle, false, false, 8, 8, 192, 9999, 0, start[0], start[1], start[2], 0, 0, 0, 0, 0, 0, 0, 0, 0);
 806                 VectorAdd (start, vec, start);
 807         }
 808 }
 809
 810
 811 /*
 812 ===============
 813 CL_MoveParticles
 814 ===============
 815 */
 816 void CL_MoveParticles (void)
 817 {
 818         particle_t *p;
 819         renderparticle_t *r;
 820         int i, activeparticles, maxparticle, j, a, pressureused = false;
 821         float gravity, dvel, frametime, f, dist, normal[3], v[3], org[3];
 822
 823         // LordHavoc: early out condition
 824         if (!cl_numparticles)
 825         {
 826                 r_refdef.numparticles = 0;
 827                 return;
 828         }
 829
 830         frametime = cl.time - cl.oldtime;
 831         if (!frametime)
 832                 return; // if absolutely still, don't update particles
 833         gravity = frametime * sv_gravity.value;
 834         dvel = 1+4*frametime;
 835
 836         activeparticles = 0;
 837         maxparticle = -1;
 838         j = 0;
 839         for (i = 0, p = particles, r = r_refdef.particles;i < cl_numparticles;i++, p++)
 840         {
 841                 if (p->die < cl.time)
 842                 {
 843                         freeparticles[j++] = p;
 844                         continue;
 845                 }
 846
 847                 VectorCopy(p->org, p->oldorg);
 848                 VectorMA(p->org, frametime, p->vel, p->org);
 849                 if (p->friction)
 850                 {
 851                         f = 1.0f - (p->friction * frametime);
 852                         VectorScale(p->vel, f, p->vel);
 853                 }
 854                 VectorCopy(p->org, org);
 855                 if (p->bounce)
 856                 {
 857                         if (TraceLine(p->oldorg, p->org, v, normal, 0, true) < 1)
 858                         {
 859                                 VectorCopy(v, p->org);
 860                                 if (p->bounce < 0)
 861                                 {
 862                                         // assume it's blood (lame, but...)
 863                                         R_Stain(v, 48, 64, 24, 24, 48, 192, 48, 48, 48);
 864                                         p->die = -1;
 865                                         freeparticles[j++] = p;
 866                                         continue;
 867                                 }
 868                                 else
 869                                 {
 870                                         dist = DotProduct(p->vel, normal) * -p->bounce;
 871                                         VectorMA(p->vel, dist, normal, p->vel);
 872                                         if (DotProduct(p->vel, p->vel) < 0.03)
 873                                                 VectorClear(p->vel);
 874                                 }
 875                         }
 876                 }
 877
 878                 switch (p->type)
 879                 {
 880                 case pt_static:
 881                         break;
 882
 883                         // LordHavoc: drop-through because of shared code
 884                 case pt_blob:
 885                         p->vel[2] *= dvel;
 886                 case pt_blob2:
 887                         p->vel[0] *= dvel;
 888                         p->vel[1] *= dvel;
 889                         p->alpha -= frametime * 256;
 890                         if (p->alpha < 1)
 891                                 p->die = -1;
 892                         break;
 893
 894                 case pt_grav:
 895                         p->vel[2] -= gravity;
 896                         break;
 897                 case pt_lavasplash:
 898                         p->vel[2] -= gravity * 0.05;
 899                         p->alpha -= frametime * 192;
 900                         if (p->alpha < 1)
 901                                 p->die = -1;
 902                         break;
 903                 case pt_snow:
 904                         if (cl.time > p->time2)
 905                         {
 906                                 p->time2 = cl.time + (rand() & 3) * 0.1;
 907                                 p->vel[0] = (rand()&63)-32 + p->vel2[0];
 908                                 p->vel[1] = (rand()&63)-32 + p->vel2[1];
 909                                 p->vel[2] = (rand()&63)-32 + p->vel2[2];
 910                         }
 911                         a = Mod_PointInLeaf(p->org, cl.worldmodel)->contents;
 912                         if (a != CONTENTS_EMPTY && a != CONTENTS_SKY)
 913                         {
 914                                 p->die = -1;
 915                                 /*
 916                                 if (a == CONTENTS_SOLID && Mod_PointInLeaf(p->oldorg, cl.worldmodel)->contents == CONTENTS_SOLID)
 917                                         break; // still in solid
 918                                 p->die = cl.time + 1000;
 919                                 p->vel[0] = p->vel[1] = p->vel[2] = 0;
 920                                 switch (a)
 921                                 {
 922                                 case CONTENTS_LAVA:
 923                                 case CONTENTS_SLIME:
 924                                         p->tex = tex_smoke[rand()&7];
 925                                         p->orientation = PARTICLE_BILLBOARD;
 926                                         p->type = pt_steam;
 927                                         p->alpha = 96;
 928                                         p->scalex = 5;
 929                                         p->scaley = 5;
 930                                         p->vel[2] = 96;
 931                                         break;
 932                                 case CONTENTS_WATER:
 933                                         p->tex = tex_smoke[rand()&7];
 934                                         p->orientation = PARTICLE_BILLBOARD;
 935                                         p->type = pt_splash;
 936                                         p->alpha = 96;
 937                                         p->scalex = 5;
 938                                         p->scaley = 5;
 939                                         p->vel[2] = 96;
 940                                         break;
 941                                 default: // CONTENTS_SOLID and any others
 942                                         TraceLine(p->oldorg, p->org, v, normal, 0, true);
 943                                         VectorCopy(v, p->org);
 944                                         p->tex = tex_smoke[rand()&7];
 945                                         p->orientation = PARTICLE_BILLBOARD;
 946                                         p->type = pt_fade;
 947                                         p->scalex = 5;
 948                                         p->scaley = 5;
 949                                         VectorClear(p->vel);
 950                                         break;
 951                                 }
 952                                 */
 953                         }
 954                         break;
 955                 case pt_blood:
 956                         p->friction = 1;
 957                         a = Mod_PointInLeaf(p->org, cl.worldmodel)->contents;
 958                         if (a != CONTENTS_EMPTY)
 959                         {
 960                                 if (a == CONTENTS_WATER || a == CONTENTS_SLIME)
 961                                 {
 962                                         p->friction = 5;
 963                                         p->scalex += frametime * 32.0f;
 964                                         p->scaley += frametime * 32.0f;
 965                                         p->alpha -= frametime * 128.0f;
 966                                         p->vel[2] += gravity * 0.125f;
 967                                         if (p->alpha < 1)
 968                                                 p->die = -1;
 969                                         break;
 970                                 }
 971                                 else
 972                                 {
 973                                         p->die = -1;
 974                                         break;
 975                                 }
 976                         }
 977                         p->vel[2] -= gravity * 0.5;
 978                         break;
 979                 case pt_spark:
 980                         p->alpha -= frametime * p->time2;
 981                         p->vel[2] -= gravity;
 982                         if (p->alpha < 1)
 983                                 p->die = -1;
 984                         else if (Mod_PointInLeaf(p->org, cl.worldmodel)->contents != CONTENTS_EMPTY)
 985                                 p->type = pt_underwaterspark;
 986                         break;
 987                 case pt_underwaterspark:
 988                         if (Mod_PointInLeaf(p->org, cl.worldmodel)->contents == CONTENTS_EMPTY)
 989                         {
 990                                 p->tex = tex_smoke[rand()&7];
 991                                 p->orientation = PARTICLE_BILLBOARD;
 992                                 p->color[0] = p->color[1] = p->color[2] = 255;
 993                                 p->scalex = 8;
 994                                 p->scaley = 8;
 995                                 p->type = pt_explosionsplash;
 996                         }
 997                         else
 998                                 p->vel[2] += gravity * 0.5f;
 999                         p->alpha -= frametime * p->time2;
1000                         if (p->alpha < 1)
1001                                 p->die = -1;
1002                         break;
1003                 case pt_explosionsplash:
1004                         if (Mod_PointInLeaf(p->org, cl.worldmodel)->contents == CONTENTS_EMPTY)
1005                                 p->vel[2] -= gravity;
1006                         else
1007                                 p->alpha = 0;
1008                         p->scalex += frametime * 64.0f;
1009                         p->scaley += frametime * 64.0f;
1010                         p->alpha -= frametime * 1024.0f;
1011                         if (p->alpha < 1)
1012                                 p->die = -1;
1013                         break;
1014                 case pt_fade:
1015                         p->alpha -= frametime * 384;
1016                         if (p->alpha < 1)
1017                                 p->die = -1;
1018                         break;
1019                 case pt_bubble:
1020                         a = Mod_PointInLeaf(p->org, cl.worldmodel)->contents;
1021                         if (a != CONTENTS_WATER && a != CONTENTS_SLIME)
1022                         {
1023                                 p->tex = tex_smoke[rand()&7];
1024                                 p->orientation = PARTICLE_BILLBOARD;
1025                                 p->type = pt_splashpuff;
1026                                 p->scalex = 4;
1027                                 p->scaley = 4;
1028                                 p->vel[0] = p->vel[1] = p->vel[2] = 0;
1029                                 break;
1030                         }
1031                         p->vel[2] += gravity * 0.25;
1032                         p->vel[0] *= (1 - (frametime * 0.0625));
1033                         p->vel[1] *= (1 - (frametime * 0.0625));
1034                         p->vel[2] *= (1 - (frametime * 0.0625));
1035                         if (cl.time > p->time2)
1036                         {
1037                                 p->time2 = cl.time + lhrandom(0, 0.5);
1038                                 p->vel[0] += lhrandom(-32,32);
1039                                 p->vel[1] += lhrandom(-32,32);
1040                                 p->vel[2] += lhrandom(-32,32);
1041                         }
1042                         p->alpha -= frametime * 256;
1043                         if (p->alpha < 1)
1044                                 p->die = -1;
1045                         break;
1046                 case pt_bulletsmoke:
1047                         p->scalex += frametime * 16;
1048                         p->scaley += frametime * 16;
1049                         p->alpha -= frametime * 1024;
1050                         p->vel[2] += gravity * 0.1;
1051                         if (p->alpha < 1)
1052                                 p->die = -1;
1053                         break;
1054                 case pt_smoke:
1055                         p->scalex += frametime * 24;
1056                         p->scaley += frametime * 24;
1057                         p->alpha -= frametime * 256;
1058                         p->vel[2] += gravity * 0.1;
1059                         if (p->alpha < 1)
1060                                 p->die = -1;
1061                         break;
1062                 case pt_steam:
1063                         p->scalex += frametime * 48;
1064                         p->scaley += frametime * 48;
1065                         p->alpha -= frametime * 512;
1066                         p->vel[2] += gravity * 0.05;
1067                         if (p->alpha < 1)
1068                                 p->die = -1;
1069                         break;
1070                 case pt_splashpuff:
1071                         p->alpha -= frametime * 1024;
1072                         if (p->alpha < 1)
1073                                 p->die = -1;
1074                         break;
1075                 case pt_rain:
1076                         a = Mod_PointInLeaf(p->org, cl.worldmodel)->contents;
1077                         if (a != CONTENTS_EMPTY && a != CONTENTS_SKY)
1078                                 p->die = -1;
1079                         /*
1080                         f = 0;
1081                         b = Mod_PointInLeaf(p->oldorg, cl.worldmodel)->contents;
1082                         VectorCopy(p->oldorg, o);
1083                         while (f < 1)
1084                         {
1085                                 a = b;
1086                                 f = TraceLine(o, p->org, v, normal, a, true);
1087                                 b = traceline_endcontents;
1088                                 if (f < 1 && b != CONTENTS_EMPTY && b != CONTENTS_SKY)
1089                                 {
1090                                         #if 1
1091                                         p->die = -1;
1092                                         #else
1093                                         p->die = cl.time + 1000;
1094                                         p->vel[0] = p->vel[1] = p->vel[2] = 0;
1095                                         VectorCopy(v, p->org);
1096                                         switch (b)
1097                                         {
1098                                         case CONTENTS_LAVA:
1099                                         case CONTENTS_SLIME:
1100                                                 p->tex = tex_smoke[rand()&7];
1101                                                 p->orientation = PARTICLE_BILLBOARD;
1102                                                 p->type = pt_steam;
1103                                                 p->scalex = 3;
1104                                                 p->scaley = 3;
1105                                                 p->vel[2] = 96;
1106                                                 break;
1107                                         default: // water, solid, and anything else
1108                                                 p->tex = tex_rainsplash[0];
1109                                                 p->orientation = PARTICLE_ORIENTED_DOUBLESIDED;
1110                                                 p->time2 = 0;
1111                                                 VectorCopy(normal, p->vel2);
1112                                         //      VectorAdd(p->org, normal, p->org);
1113                                                 p->type = pt_raindropsplash;
1114                                                 p->scalex = 8;
1115                                                 p->scaley = 8;
1116                                                 break;
1117                                         }
1118                                         #endif
1119                                         break;
1120                                 }
1121                         }
1122                         */
1123                         break;
1124                         /*
1125                 case pt_raindropsplash:
1126                         p->time2 += frametime * 64.0f;
1127                         if (p->time2 >= 16.0f)
1128                         {
1129                                 p->die = -1;
1130                                 break;
1131                         }
1132                         p->tex = tex_rainsplash[(int) p->time2];
1133                         p->orientation = PARTICLE_ORIENTED_DOUBLESIDED;
1134                         break;
1135                         */
1136                 case pt_flame:
1137                         p->alpha -= frametime * 512;
1138                         p->vel[2] += gravity;
1139                         if (p->alpha < 16)
1140                                 p->die = -1;
1141                         break;
1142                 case pt_oneframe:
1143                         if (p->time2)
1144                                 p->die = -1;
1145                         p->time2 = 1;
1146                         break;
1147                 default:
1148                         printf("unknown particle type %i\n", p->type);
1149                         p->die = -1;
1150                         break;
1151                 }
1152
1153                 // LordHavoc: immediate removal of unnecessary particles (must be done to ensure compactor below operates properly in all cases)
1154                 if (p->die < cl.time)
1155                         freeparticles[j++] = p;
1156                 else
1157                 {
1158                         maxparticle = i;
1159                         activeparticles++;
1160                         if (p->pressure)
1161                                 pressureused = true;
1162
1163                         // build renderparticle for renderer to use
1164                         r->orientation = p->orientation;
1165                         r->additive = p->additive;
1166                         r->dir[0] = p->vel2[0];
1167                         r->dir[1] = p->vel2[1];
1168                         r->dir[2] = p->vel2[2];
1169                         r->org[0] = p->org[0];
1170                         r->org[1] = p->org[1];
1171                         r->org[2] = p->org[2];
1172                         r->tex = p->tex;
1173                         r->scalex = p->scalex * 0.5f * cl_particles_size.value;
1174                         r->scaley = p->scaley * 0.5f * cl_particles_size.value;
1175                         r->dynlight = p->dynlight;
1176                         r->color[0] = p->color[0] * (1.0f / 255.0f);
1177                         r->color[1] = p->color[1] * (1.0f / 255.0f);
1178                         r->color[2] = p->color[2] * (1.0f / 255.0f);
1179                         r->color[3] = p->alpha * (1.0f / 255.0f);
1180                         r++;
1181                 }
1182         }
1183         r_refdef.numparticles = r - r_refdef.particles;
1184         // fill in gaps to compact the array
1185         i = 0;
1186         while (maxparticle >= activeparticles)
1187         {
1188                 *freeparticles[i++] = particles[maxparticle--];
1189                 while (maxparticle >= activeparticles && particles[maxparticle].die < cl.time)
1190                         maxparticle--;
1191         }
1192         cl_numparticles = activeparticles;
1193
1194         if (pressureused)
1195         {
1196                 activeparticles = 0;
1197                 for (i = 0, p = particles;i < cl_numparticles;i++, p++)
1198                         if (p->pressure)
1199                                 freeparticles[activeparticles++] = p;
1200
1201                 if (activeparticles)
1202                 {
1203                         for (i = 0, p = particles;i < cl_numparticles;i++, p++)
1204                         {
1205                                 for (j = 0;j < activeparticles;j++)
1206                                 {
1207                                         if (freeparticles[j] != p)
1208                                         {
1209                                                 float dist, diff[3];
1210                                                 VectorSubtract(p->org, freeparticles[j]->org, diff);
1211                                                 dist = DotProduct(diff, diff);
1212                                                 if (dist < 4096 && dist >= 1)
1213                                                 {
1214                                                         dist = freeparticles[j]->scalex * 4.0f * frametime / sqrt(dist);
1215                                                         VectorMA(p->vel, dist, diff, p->vel);
1216                                                         //dist = freeparticles[j]->scalex * 4.0f * frametime / dist;
1217                                                         //VectorMA(p->vel, dist, freeparticles[j]->vel, p->vel);
1218                                                 }
1219                                         }
1220                                 }
1221                         }
1222                 }
1223         }
1224 }