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quakeforge/libs/video/renderer/gl/gl_dyn_part.c
Bill Currie fbc1bd9f6e [renderer] Clean up entity_t to a certain extent 
This is the first step towards component-based entities.

There's still some transform-related stuff in the struct that needs to
be moved, but it's all entirely client related (rather than renderer)
and will probably go into a "client" component. Also, the current
components are directly included structs rather than references as I
didn't want to deal with the object management at this stage.

As part of the process (because transforms use simd) this also starts
the process of moving QF to using simd for vectors and matrices. There's
now a mess of simd and sisd code mixed together, but it works
surprisingly well together.
2021-03-10 00:01:41 +09:00

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/*
gl_dyn_part.c
OpenGL particle system.
Copyright (C) 1996-1997 Id Software, Inc.
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to:
Free Software Foundation, Inc.
59 Temple Place - Suite 330
Boston, MA 02111-1307, USA
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#define NH_DEFINE
#include "namehack.h"
#ifdef HAVE_STRING_H
# include <string.h>
#endif
#ifdef HAVE_STRINGS_H
# include <strings.h>
#endif
#include <stdlib.h>
#include "QF/cmd.h"
#include "QF/cvar.h"
#include "QF/mersenne.h"
#include "QF/qargs.h"
#include "QF/quakefs.h"
#include "QF/render.h"
#include "QF/sys.h"
#include "QF/va.h"
#include "QF/GL/defines.h"
#include "QF/GL/funcs.h"
#include "QF/GL/qf_explosions.h"
#include "QF/GL/qf_textures.h"
#include "QF/GL/qf_vid.h"
#include "compat.h"
#include "r_internal.h"
#include "varrays.h"
static int ramp1[8] = { 0x6f, 0x6d, 0x6b, 0x69, 0x67, 0x65, 0x63, 0x61 };
//static int ramp2[8] = { 0x6f, 0x6e, 0x6d, 0x6c, 0x6b, 0x6a, 0x68, 0x66 };
static int ramp3[8] = { 0x6d, 0x6b, 0x06, 0x05, 0x04, 0x03, 0x02, 0x01 };
static int partUseVA;
static int pVAsize;
static int *pVAindices;
static varray_t2f_c4ub_v3f_t *particleVertexArray;
static mtstate_t mt; // private PRNG state
inline static void
particle_new (ptype_t type, int texnum, const vec3_t org, float scale,
const vec3_t vel, float die, int color, float alpha, float ramp)
{
particle_t *part;
/*
// Uncomment this for particle debugging!
if (numparticles >= r_maxparticles) {
Sys_Error ("FAILED PARTICLE ALLOC!");
return NULL;
}
*/
part = &particles[numparticles++];
VectorCopy (org, part->org);
part->color = color;
part->tex = texnum;
part->scale = scale;
part->alpha = alpha;
VectorCopy (vel, part->vel);
part->type = type;
part->die = die;
part->ramp = ramp;
part->phys = R_ParticlePhysics (type);
}
/*
particle_new_random
note that org_fuzz & vel_fuzz should be ints greater than 0 if you are
going to bother using this function.
*/
inline static void
particle_new_random (ptype_t type, int texnum, const vec3_t org, int org_fuzz,
float scale, int vel_fuzz, float die, int color,
float alpha, float ramp)
{
float o_fuzz = org_fuzz, v_fuzz = vel_fuzz;
int rnd;
vec3_t porg, pvel;
rnd = mtwist_rand (&mt);
porg[0] = o_fuzz * ((rnd & 63) - 31.5) / 63.0 + org[0];
porg[1] = o_fuzz * (((rnd >> 6) & 63) - 31.5) / 63.0 + org[1];
porg[2] = o_fuzz * (((rnd >> 10) & 63) - 31.5) / 63.0 + org[2];
rnd = mtwist_rand (&mt);
pvel[0] = v_fuzz * ((rnd & 63) - 31.5) / 63.0;
pvel[1] = v_fuzz * (((rnd >> 6) & 63) - 31.5) / 63.0;
pvel[2] = v_fuzz * (((rnd >> 10) & 63) - 31.5) / 63.0;
particle_new (type, texnum, porg, scale, pvel, die, color, alpha, ramp);
}
/*
inline static void
particle_new_veryrandom (ptype_t type, int texnum, const vec3_t org,
int org_fuzz, float scale, int vel_fuzz, float die,
int color, float alpha, float ramp)
{
vec3_t porg, pvel;
porg[0] = qfrandom (org_fuzz * 2) - org_fuzz + org[0];
porg[1] = qfrandom (org_fuzz * 2) - org_fuzz + org[1];
porg[2] = qfrandom (org_fuzz * 2) - org_fuzz + org[2];
pvel[0] = qfrandom (vel_fuzz * 2) - vel_fuzz;
pvel[1] = qfrandom (vel_fuzz * 2) - vel_fuzz;
pvel[2] = qfrandom (vel_fuzz * 2) - vel_fuzz;
particle_new (type, texnum, porg, scale, pvel, die, color, alpha, ramp);
}
*/
void
gl_R_ClearParticles (void)
{
numparticles = 0;
}
void
gl_R_InitParticles (void)
{
int i;
mtwist_seed (&mt, 0xdeadbeef);
if (r_maxparticles && r_init) {
if (vaelements) {
partUseVA = 0;
pVAsize = r_maxparticles * 4;
Sys_MaskPrintf (SYS_DEV,
"Particles: Vertex Array use disabled.\n");
} else {
if (vaelements > 3)
pVAsize = min ((unsigned int) (vaelements - (vaelements % 4)),
r_maxparticles * 4);
else if (vaelements >= 0)
pVAsize = r_maxparticles * 4;
Sys_MaskPrintf (SYS_DEV,
"Particles: %i maximum vertex elements.\n",
pVAsize);
}
if (particleVertexArray)
free (particleVertexArray);
particleVertexArray = (varray_t2f_c4ub_v3f_t *)
calloc (pVAsize, sizeof (varray_t2f_c4ub_v3f_t));
if (partUseVA)
qfglInterleavedArrays (GL_T2F_C4UB_V3F, 0, particleVertexArray);
if (pVAindices)
free (pVAindices);
pVAindices = (int *) calloc (pVAsize, sizeof (int));
for (i = 0; i < pVAsize; i++)
pVAindices[i] = i;
} else {
if (particleVertexArray) {
free (particleVertexArray);
particleVertexArray = 0;
}
if (pVAindices) {
free (pVAindices);
pVAindices = 0;
}
}
}
void
gl_R_ReadPointFile_f (void)
{
const char *name;
char *mapname;
int c, r;
vec3_t org;
QFile *f;
mapname = strdup (r_worldentity.renderer.model->path);
if (!mapname)
Sys_Error ("Can't duplicate mapname!");
QFS_StripExtension (mapname, mapname);
name = va (0, "%s.pts", mapname);
free (mapname);
f = QFS_FOpenFile (name);
if (!f) {
Sys_Printf ("couldn't open %s\n", name);
return;
}
Sys_MaskPrintf (SYS_DEV, "Reading %s...\n", name);
c = 0;
for (;;) {
char buf[64];
Qgets (f, buf, sizeof (buf));
r = sscanf (buf, "%f %f %f\n", &org[0], &org[1], &org[2]);
if (r != 3)
break;
c++;
if (numparticles >= r_maxparticles) {
Sys_MaskPrintf (SYS_DEV, "Not enough free particles\n");
break;
} else {
particle_new (pt_static, part_tex_dot, org, 1.5, vec3_origin,
99999, (-c) & 15, 1.0, 0.0);
}
}
Qclose (f);
Sys_MaskPrintf (SYS_DEV, "%i points read\n", c);
}
static void
R_ParticleExplosion_QF (const vec3_t org)
{
// R_NewExplosion (org);
if (numparticles >= r_maxparticles)
return;
particle_new_random (pt_smokecloud, part_tex_smoke, org, 4, 30, 8,
vr_data.realtime + 5.0, (mtwist_rand (&mt) & 7) + 8,
0.5 + qfrandom (0.25), 0.0);
}
static void
R_ParticleExplosion2_QF (const vec3_t org, int colorStart, int colorLength)
{
unsigned int i, j = 512;
if (numparticles >= r_maxparticles)
return;
else if (numparticles + j >= r_maxparticles)
j = r_maxparticles - numparticles;
for (i = 0; i < j; i++) {
particle_new_random (pt_blob, part_tex_dot, org, 16, 2, 256,
vr_data.realtime + 0.3,
colorStart + (i % colorLength), 1.0, 0.0);
}
}
static void
R_BlobExplosion_QF (const vec3_t org)
{
unsigned int i;
unsigned int j = 1024;
if (numparticles >= r_maxparticles)
return;
else if (numparticles + j >= r_maxparticles)
j = r_maxparticles - numparticles;
for (i = 0; i < j >> 1; i++) {
particle_new_random (pt_blob, part_tex_dot, org, 12, 2, 256,
vr_data.realtime + 1.0 + (mtwist_rand (&mt) & 7) * 0.05,
66 + i % 6, 1.0, 0.0);
}
for (i = 0; i < j / 2; i++) {
particle_new_random (pt_blob2, part_tex_dot, org, 12, 2, 256,
vr_data.realtime + 1.0 + (mtwist_rand (&mt) & 7) * 0.05,
150 + i % 6, 1.0, 0.0);
}
}
static inline void
R_RunSparkEffect_QF (const vec3_t org, int count, int ofuzz)
{
if (numparticles >= r_maxparticles)
return;
particle_new (pt_smokecloud, part_tex_smoke, org, ofuzz * 0.08,
vec3_origin, vr_data.realtime + 9, 12 + (mtwist_rand (&mt) & 3),
0.25 + qfrandom (0.125), 0.0);
if (numparticles + count >= r_maxparticles)
count = r_maxparticles - numparticles;
if (count) {
int orgfuzz = ofuzz * 3 / 4;
if (orgfuzz < 1)
orgfuzz = 1;
while (count--) {
int color = mtwist_rand (&mt) & 7;
particle_new_random (pt_fallfadespark, part_tex_dot, org, orgfuzz,
0.7, 96, vr_data.realtime + 5.0, ramp1[color],
1.0, color);
}
}
}
static inline void
R_BloodPuff_QF (const vec3_t org, int count)
{
if (numparticles >= r_maxparticles)
return;
particle_new (pt_bloodcloud, part_tex_smoke, org, count / 5, vec3_origin,
vr_data.realtime + 99.0, 70 + (mtwist_rand (&mt) & 3), 0.5, 0.0);
}
static void
R_BloodPuffEffect_QF (const vec3_t org, int count)
{
R_BloodPuff_QF (org, count);
}
static void
R_GunshotEffect_QF (const vec3_t org, int count)
{
int scale = 16;
scale += count / 15;
R_RunSparkEffect_QF (org, count >> 1, scale);
}
static void
R_LightningBloodEffect_QF (const vec3_t org)
{
int count = 7;
R_BloodPuff_QF (org, 50);
if (numparticles >= r_maxparticles)
return;
particle_new (pt_smokecloud, part_tex_smoke, org, 3.0, vec3_origin,
vr_data.realtime + 9.0, 12 + (mtwist_rand (&mt) & 3),
0.25 + qfrandom (0.125), 0.0);
if (numparticles + count >= r_maxparticles)
count = r_maxparticles - numparticles;
while (count--)
particle_new_random (pt_fallfade, part_tex_spark, org, 12, 2.0, 128,
vr_data.realtime + 5.0, 244 + (count % 3), 1.0,
0.0);
}
static void
R_RunParticleEffect_QF (const vec3_t org, const vec3_t dir, int color,
int count)
{
float scale;
int i;
vec3_t porg;
if (numparticles >= r_maxparticles)
return;
scale = pow (count, 0.23); // calculate scale before clipping to part. max
if (numparticles + count >= r_maxparticles)
count = r_maxparticles - numparticles;
for (i = 0; i < count; i++) {
int rnd = mtwist_rand (&mt);
porg[0] = org[0] + scale * (((rnd >> 3) & 15) - 7.5);
porg[1] = org[1] + scale * (((rnd >> 7) & 15) - 7.5);
porg[2] = org[2] + scale * (((rnd >> 11) & 15) - 7.5);
// Note that ParseParticleEffect handles (dir * 15)
particle_new (pt_grav, part_tex_dot, porg, 1.5, dir,
vr_data.realtime + 0.1 * (i % 5),
(color & ~7) + (rnd & 7), 1.0, 0.0);
}
}
static void
R_SpikeEffect_QF (const vec3_t org)
{
R_RunSparkEffect_QF (org, 5, 8);
}
static void
R_SuperSpikeEffect_QF (const vec3_t org)
{
R_RunSparkEffect_QF (org, 10, 8);
}
static void
R_KnightSpikeEffect_QF (const vec3_t org)
{
unsigned int count = 10;
if (numparticles >= r_maxparticles)
return;
particle_new (pt_smokecloud, part_tex_smoke, org, 1.0, vec3_origin,
vr_data.realtime + 9.0, 234, 0.25 + qfrandom (0.125), 0.0);
if (numparticles + count >= r_maxparticles)
count = r_maxparticles - numparticles;
while (count--)
particle_new_random (pt_fallfade, part_tex_dot, org, 6, 0.7, 96,
vr_data.realtime + 5.0, 234, 1.0, 0.0);
}
static void
R_WizSpikeEffect_QF (const vec3_t org)
{
unsigned int count = 15;
if (numparticles >= r_maxparticles)
return;
particle_new (pt_smokecloud, part_tex_smoke, org, 2.0, vec3_origin,
vr_data.realtime + 9.0, 63, 0.25 + qfrandom (0.125), 0.0);
if (numparticles + count >= r_maxparticles)
count = r_maxparticles - numparticles;
while (count--)
particle_new_random (pt_fallfade, part_tex_dot, org, 12, 0.7, 96,
vr_data.realtime + 5.0, 63, 1.0, 0.0);
}
static void
R_LavaSplash_QF (const vec3_t org)
{
float vel;
int rnd, i, j;
int k = 256;
vec3_t dir, porg, pvel;
if (numparticles + k >= r_maxparticles) {
return;
} // else if (numparticles + k >= r_maxparticles) {
// k = r_maxparticles - numparticles;
// }
dir[2] = 256;
for (i = -128; i < 128; i += 16) {
for (j = -128; j < 128; j += 16) {
rnd = mtwist_rand (&mt);
dir[0] = j + (rnd & 7);
dir[1] = i + ((rnd >> 6) & 7);
porg[0] = org[0] + dir[0];
porg[1] = org[1] + dir[1];
porg[2] = org[2] + ((rnd >> 9) & 63);
VectorNormalize (dir);
rnd = mtwist_rand (&mt);
vel = 50.0 + 0.5 * (float) (rnd & 127);
VectorScale (dir, vel, pvel);
particle_new (pt_grav, part_tex_dot, porg, 3, pvel,
vr_data.realtime + 2.0 + ((rnd >> 7) & 31) * 0.02,
224 + ((rnd >> 12) & 7), 0.75, 0.0);
}
}
}
static void
R_TeleportSplash_QF (const vec3_t org)
{
float vel;
int rnd, i, j, k;
int l = 896;
vec3_t dir, pdir, porg, pvel;
if (numparticles + l >= r_maxparticles) {
return;
} // else if (numparticles + l >= r_maxparticles) {
// l = r_maxparticles - numparticles;
// }
for (k = -24; k < 32; k += 4) {
dir[2] = k * 8;
for (i = -16; i < 16; i += 4) {
dir[1] = i * 8;
for (j = -16; j < 16; j += 4) {
dir[0] = j * 8;
VectorCopy (dir, pdir);
VectorNormalize (pdir);
rnd = mtwist_rand (&mt);
porg[0] = org[0] + i + (rnd & 3);
porg[1] = org[1] + j + ((rnd >> 2) & 3);
porg[2] = org[2] + k + ((rnd >> 4) & 3);
vel = 50 + ((rnd >> 6) & 63);
VectorScale (pdir, vel, pvel);
particle_new (pt_grav, part_tex_spark, porg, 0.6, pvel,
(vr_data.realtime + 0.2 + (mtwist_rand (&mt) & 15) * 0.01),
(7 + ((rnd >> 12) & 7)), 1.0, 0.0);
}
}
}
}
static void
R_RocketTrail_QF (const entity_t *ent)
{
float dist, maxlen, origlen, percent, pscale, pscalenext;
float len = 0.0;
vec3_t old_origin, vec;
if (numparticles >= r_maxparticles)
return;
VectorCopy (ent->old_origin, old_origin);
VectorSubtract (ent->origin, old_origin, vec);
maxlen = VectorNormalize (vec);
origlen = vr_data.frametime / maxlen;
pscale = 1.5 + qfrandom (1.5);
while (len < maxlen) {
pscalenext = 1.5 + qfrandom (1.5);
dist = (pscale + pscalenext) * 3.0;
percent = len * origlen;
particle_new (pt_smoke, part_tex_smoke, old_origin,
pscale + percent * 4.0, vec3_origin,
vr_data.realtime + 2.0 - percent * 2.0,
12 + (mtwist_rand (&mt) & 3),
0.5 + qfrandom (0.125) - percent * 0.40, 0.0);
if (numparticles >= r_maxparticles)
break;
len += dist;
VectorMultAdd (old_origin, len, vec, old_origin);
pscale = pscalenext;
}
}
static void
R_GrenadeTrail_QF (const entity_t *ent)
{
float dist, maxlen, origlen, percent, pscale, pscalenext;
float len = 0.0;
vec3_t old_origin, vec;
if (numparticles >= r_maxparticles)
return;
VectorCopy (ent->old_origin, old_origin);
VectorSubtract (ent->origin, old_origin, vec);
maxlen = VectorNormalize (vec);
origlen = vr_data.frametime / maxlen;
pscale = 6.0 + qfrandom (7.0);
while (len < maxlen) {
pscalenext = 6.0 + qfrandom (7.0);
dist = (pscale + pscalenext) * 2.0;
percent = len * origlen;
particle_new (pt_smoke, part_tex_smoke, old_origin,
pscale + percent * 4.0, vec3_origin,
vr_data.realtime + 2.0 - percent * 2.0,
1 + (mtwist_rand (&mt) & 3),
0.625 + qfrandom (0.125) - percent * 0.40, 0.0);
if (numparticles >= r_maxparticles)
break;
len += dist;
VectorMultAdd (old_origin, len, vec, old_origin);
pscale = pscalenext;
}
}
static void
R_BloodTrail_QF (const entity_t *ent)
{
float dist, maxlen, origlen, percent, pscale, pscalenext;
float len = 0.0;
int j;
vec3_t old_origin, porg, pvel, vec;
if (numparticles >= r_maxparticles)
return;
VectorCopy (ent->old_origin, old_origin);
VectorSubtract (ent->origin, old_origin, vec);
maxlen = VectorNormalize (vec);
origlen = vr_data.frametime / maxlen;
pscale = 5.0 + qfrandom (10.0);
while (len < maxlen) {
pscalenext = 5.0 + qfrandom (10.0);
dist = (pscale + pscalenext) * 1.5;
for (j = 0; j < 3; j++) {
pvel[j] = qfrandom (24.0) - 12.0;
porg[j] = old_origin[j] + qfrandom (3.0) - 1.5;
}
percent = len * origlen;
pvel[2] -= percent * 40.0;
particle_new (pt_grav, part_tex_smoke, porg, pscale, pvel,
vr_data.realtime + 2.0 - percent * 2.0,
68 + (mtwist_rand (&mt) & 3), 1.0, 0.0);
if (numparticles >= r_maxparticles)
break;
len += dist;
VectorMultAdd (old_origin, len, vec, old_origin);
pscale = pscalenext;
}
}
static void
R_SlightBloodTrail_QF (const entity_t *ent)
{
float dist, maxlen, origlen, percent, pscale, pscalenext;
float len = 0.0;
int j;
vec3_t old_origin, porg, pvel, vec;
if (numparticles >= r_maxparticles)
return;
VectorCopy (ent->old_origin, old_origin);
VectorSubtract (ent->origin, old_origin, vec);
maxlen = VectorNormalize (vec);
origlen = vr_data.frametime / maxlen;
pscale = 1.5 + qfrandom (7.5);
while (len < maxlen) {
pscalenext = 1.5 + qfrandom (7.5);
dist = (pscale + pscalenext) * 1.5;
for (j = 0; j < 3; j++) {
pvel[j] = (qfrandom (12.0) - 6.0);
porg[j] = old_origin[j] + qfrandom (3.0) - 1.5;
}
percent = len * origlen;
pvel[2] -= percent * 40;
particle_new (pt_grav, part_tex_smoke, porg, pscale, pvel,
vr_data.realtime + 1.5 - percent * 1.5,
68 + (mtwist_rand (&mt) & 3), 0.75, 0.0);
if (numparticles >= r_maxparticles)
break;
len += dist;
VectorMultAdd (old_origin, len, vec, old_origin);
pscale = pscalenext;
}
}
static void
R_WizTrail_QF (const entity_t *ent)
{
float maxlen, origlen, percent;
float dist = 3.0, len = 0.0;
static int tracercount;
vec3_t old_origin, pvel, subtract, vec;
if (numparticles >= r_maxparticles)
return;
VectorCopy (ent->old_origin, old_origin);
VectorSubtract (ent->origin, old_origin, vec);
maxlen = VectorNormalize (vec);
origlen = vr_data.frametime / maxlen;
VectorScale (vec, maxlen - dist, subtract);
while (len < maxlen) {
percent = len * origlen;
tracercount++;
if (tracercount & 1) {
pvel[0] = 30.0 * vec[1];
pvel[1] = 30.0 * -vec[0];
} else {
pvel[0] = 30.0 * -vec[1];
pvel[1] = 30.0 * vec[0];
}
pvel[2] = 0.0;
particle_new (pt_flame, part_tex_smoke, old_origin,
2.0 + qfrandom (1.0) - percent * 2.0, pvel,
vr_data.realtime + 0.5 - percent * 0.5,
52 + (mtwist_rand (&mt) & 4), 1.0 - percent * 0.125, 0.0);
if (numparticles >= r_maxparticles)
break;
len += dist;
VectorAdd (old_origin, subtract, old_origin);
}
}
static void
R_FlameTrail_QF (const entity_t *ent)
{
float maxlen, origlen, percent;
float dist = 3.0, len = 0.0;
static int tracercount;
vec3_t old_origin, pvel, subtract, vec;
if (numparticles >= r_maxparticles)
return;
VectorCopy (ent->old_origin, old_origin);
VectorSubtract (ent->origin, old_origin, vec);
maxlen = VectorNormalize (vec);
origlen = vr_data.frametime / maxlen;
VectorScale (vec, maxlen - dist, subtract);
while (len < maxlen) {
percent = len * origlen;
tracercount++;
if (tracercount & 1) {
pvel[0] = 30.0 * vec[1];
pvel[1] = 30.0 * -vec[0];
} else {
pvel[0] = 30.0 * -vec[1];
pvel[1] = 30.0 * vec[0];
}
pvel[2] = 0.0;
particle_new (pt_flame, part_tex_smoke, old_origin,
2.0 + qfrandom (1.0) - percent * 2.0, pvel,
vr_data.realtime + 0.5 - percent * 0.5, 234,
1.0 - percent * 0.125, 0.0);
if (numparticles >= r_maxparticles)
break;
len += dist;
VectorAdd (old_origin, subtract, old_origin);
}
}
static void
R_VoorTrail_QF (const entity_t *ent)
{
float maxlen, origlen, percent;
float dist = 3.0, len = 0.0;
int j;
vec3_t subtract, old_origin, porg, vec;
if (numparticles >= r_maxparticles)
return;
VectorCopy (ent->old_origin, old_origin);
VectorSubtract (ent->origin, old_origin, vec);
maxlen = VectorNormalize (vec);
origlen = vr_data.frametime / maxlen;
VectorScale (vec, maxlen - dist, subtract);
while (len < maxlen) {
percent = len * origlen;
for (j = 0; j < 3; j++)
porg[j] = old_origin[j] + qfrandom (16.0) - 8.0;
particle_new (pt_static, part_tex_dot, porg, 1.0 + qfrandom (1.0),
vec3_origin, vr_data.realtime + 0.3 - percent * 0.3,
9 * 16 + 8 + (mtwist_rand (&mt) & 3), 1.0, 0.0);
if (numparticles >= r_maxparticles)
break;
len += dist;
VectorAdd (old_origin, subtract, old_origin);
}
}
static void
R_GlowTrail_QF (const entity_t *ent, int glow_color)
{
float maxlen, origlen, percent;
float dist = 3.0, len = 0.0;
int rnd;
vec3_t old_origin, org, subtract, vec;
if (numparticles >= r_maxparticles)
return;
VectorCopy (ent->old_origin, old_origin);
VectorSubtract (ent->origin, old_origin, vec);
maxlen = VectorNormalize (vec);
origlen = vr_data.frametime / maxlen;
VectorScale (vec, (maxlen - dist), subtract);
while (len < maxlen) {
percent = len * origlen;
rnd = mtwist_rand (&mt);
org[0] = old_origin[0] + ((rnd >> 12) & 7) * (5.0/7.0) - 2.5;
org[1] = old_origin[1] + ((rnd >> 9) & 7) * (5.0/7.0) - 2.5;
org[2] = old_origin[2] + ((rnd >> 6) & 7) * (5.0/7.0) - 2.5;
particle_new (pt_smoke, part_tex_dot, org, 1.0, vec3_origin,
vr_data.realtime + 2.0 - percent * 0.2,
glow_color, 1.0, 0.0);
if (numparticles >= r_maxparticles)
break;
len += dist;
VectorAdd (old_origin, subtract, old_origin);
}
}
static void
R_ParticleExplosion_EE (const vec3_t org)
{
/*
R_NewExplosion (org);
*/
if (numparticles >= r_maxparticles)
return;
particle_new_random (pt_smokecloud, part_tex_smoke, org, 4, 30, 8,
vr_data.realtime + 5.0, mtwist_rand (&mt) & 255,
0.5 + qfrandom (0.25), 0.0);
}
static void
R_TeleportSplash_EE (const vec3_t org)
{
float vel;
int rnd, i, j, k;
int l = 896;
vec3_t dir, porg, pvel;
if (numparticles + l >= r_maxparticles) {
return;
} // else if (numparticles + l >= r_maxparticles) {
// l = r_maxparticles - numparticles;
// }
for (k = -24; k < 32; k += 4) {
dir[2] = k * 8;
for (i = -16; i < 16; i += 4) {
dir[1] = i * 8;
for (j = -16; j < 16; j += 4) {
dir[0] = j * 8;
rnd = mtwist_rand (&mt);
porg[0] = org[0] + i + (rnd & 3);
porg[1] = org[1] + j + ((rnd >> 2) & 3);
porg[2] = org[2] + k + ((rnd >> 4) & 3);
VectorNormalize (dir);
vel = 50 + ((rnd >> 6) & 63);
VectorScale (dir, vel, pvel);
particle_new (pt_grav, part_tex_spark, porg, 0.6, pvel,
(vr_data.realtime + 0.2 + (mtwist_rand (&mt) & 15) * 0.01),
qfrandom (1.0), 1.0, 0.0);
}
}
}
}
static void
R_RocketTrail_EE (const entity_t *ent)
{
float dist, maxlen, origlen, percent, pscale, pscalenext;
float len = 0.0;
vec3_t old_origin, subtract, vec;
if (numparticles >= r_maxparticles)
return;
VectorCopy (ent->old_origin, old_origin);
VectorSubtract (ent->origin, old_origin, vec);
maxlen = VectorNormalize (vec);
origlen = vr_data.frametime / maxlen;
pscale = 1.5 + qfrandom (1.5);
while (len < maxlen) {
pscalenext = 1.5 + qfrandom (1.5);
dist = (pscale + pscalenext) * 3.0;
percent = len * origlen;
particle_new (pt_smoke, part_tex_smoke, old_origin,
pscale + percent * 4.0, vec3_origin,
vr_data.realtime + 2.0 - percent * 2.0,
mtwist_rand (&mt) & 255,
0.5 + qfrandom (0.125) - percent * 0.40, 0.0);
if (numparticles >= r_maxparticles)
break;
len += dist;
VectorScale (vec, len, subtract);
VectorAdd (old_origin, subtract, old_origin);
pscale = pscalenext;
}
}
static void
R_GrenadeTrail_EE (const entity_t *ent)
{
float dist, maxlen, origlen, percent, pscale, pscalenext;
float len = 0.0;
vec3_t old_origin, subtract, vec;
if (numparticles >= r_maxparticles)
return;
VectorCopy (ent->old_origin, old_origin);
VectorSubtract (ent->origin, ent->old_origin, vec);
maxlen = VectorNormalize (vec);
origlen = vr_data.frametime / maxlen;
pscale = 6.0 + qfrandom (7.0);
while (len < maxlen) {
pscalenext = 6.0 + qfrandom (7.0);
dist = (pscale + pscalenext) * 2.0;
percent = len * origlen;
particle_new (pt_smoke, part_tex_smoke, old_origin,
pscale + percent * 4.0, vec3_origin,
vr_data.realtime + 2.0 - percent * 2.0,
mtwist_rand (&mt) & 255,
0.625 + qfrandom (0.125) - percent * 0.40, 0.0);
if (numparticles >= r_maxparticles)
break;
len += dist;
VectorScale (vec, len, subtract);
VectorAdd (old_origin, subtract, old_origin);
pscale = pscalenext;
}
}
static void
R_ParticleExplosion_ID (const vec3_t org)
{
unsigned int i;
unsigned int j = 1024;
if (numparticles >= r_maxparticles)
return;
else if (numparticles + j >= r_maxparticles)
j = r_maxparticles - numparticles;
for (i = 0; i < j >> 1; i++) {
particle_new_random (pt_explode, part_tex_dot, org, 16, 1.0, 256,
vr_data.realtime + 5.0, ramp1[0], 1.0, i & 3);
}
for (i = 0; i < j / 2; i++) {
particle_new_random (pt_explode2, part_tex_dot, org, 16, 1.0, 256,
vr_data.realtime + 5.0, ramp1[0], 1.0, i & 3);
}
}
static void
R_BlobExplosion_ID (const vec3_t org)
{
unsigned int i;
unsigned int j = 1024;
if (numparticles >= r_maxparticles)
return;
else if (numparticles + j >= r_maxparticles)
j = r_maxparticles - numparticles;
for (i = 0; i < j >> 1; i++) {
particle_new_random (pt_blob, part_tex_dot, org, 12, 1.0, 256,
vr_data.realtime + 1.0 + (mtwist_rand (&mt) & 8) * 0.05,
66 + i % 6, 1.0, 0.0);
}
for (i = 0; i < j / 2; i++) {
particle_new_random (pt_blob2, part_tex_dot, org, 12, 1.0, 256,
vr_data.realtime + 1.0 + (mtwist_rand (&mt) & 8) * 0.05,
150 + i % 6, 1.0, 0.0);
}
}
static inline void // FIXME: inline?
R_RunParticleEffect_ID (const vec3_t org, const vec3_t dir, int color,
int count)
{
float scale;
int i;
vec3_t porg;
if (numparticles >= r_maxparticles)
return;
if (count > 130) // calculate scale before clipping to particle max
scale = 3.0;
else if (count > 20)
scale = 2.0;
else
scale = 1.0;
if (numparticles + count >= r_maxparticles)
count = r_maxparticles - numparticles;
for (i = 0; i < count; i++) {
int rnd = mtwist_rand (&mt);
porg[0] = org[0] + scale * (((rnd >> 3) & 15) - 8);
porg[1] = org[1] + scale * (((rnd >> 7) & 15) - 8);
porg[2] = org[2] + scale * (((rnd >> 11) & 15) - 8);
// Note that ParseParticleEffect handles (dir * 15)
particle_new (pt_grav, part_tex_dot, porg, 1.0, dir,
vr_data.realtime + 0.1 * (i % 5),
(color & ~7) + (rnd & 7), 1.0, 0.0);
}
}
static void
R_BloodPuffEffect_ID (const vec3_t org, int count)
{
R_RunParticleEffect_ID (org, vec3_origin, 73, count);
}
static void
R_GunshotEffect_ID (const vec3_t org, int count)
{
R_RunParticleEffect_ID (org, vec3_origin, 0, count);
}
static void
R_LightningBloodEffect_ID (const vec3_t org)
{
R_RunParticleEffect_ID (org, vec3_origin, 225, 50);
}
static void
R_SpikeEffect_ID (const vec3_t org)
{
R_RunParticleEffect_ID (org, vec3_origin, 0, 10);
}
static void
R_SuperSpikeEffect_ID (const vec3_t org)
{
R_RunParticleEffect_ID (org, vec3_origin, 0, 20);
}
static void
R_KnightSpikeEffect_ID (const vec3_t org)
{
R_RunParticleEffect_ID (org, vec3_origin, 226, 20);
}
static void
R_WizSpikeEffect_ID (const vec3_t org)
{
R_RunParticleEffect_ID (org, vec3_origin, 20, 30);
}
static void
R_LavaSplash_ID (const vec3_t org)
{
float vel;
int rnd, i, j;
int k = 256;
vec3_t dir, porg, pvel;
if (numparticles + k >= r_maxparticles) {
return;
} // else if (numparticles + k >= r_maxparticles) {
// k = r_maxparticles - numparticles;
// }
dir[2] = 256;
for (i = -128; i < 128; i += 16) {
for (j = -128; j < 128; j += 16) {
rnd = mtwist_rand (&mt);
dir[0] = j + (rnd & 7);
dir[1] = i + ((rnd >> 6) & 7);
porg[0] = org[0] + dir[0];
porg[1] = org[1] + dir[1];
porg[2] = org[2] + ((rnd >> 9) & 63);
VectorNormalize (dir);
rnd = mtwist_rand (&mt);
vel = 50 + (rnd & 63);
VectorScale (dir, vel, pvel);
particle_new (pt_grav, part_tex_dot, porg, 1.0, pvel,
vr_data.realtime + 2 + ((rnd >> 7) & 31) * 0.02,
224 + ((rnd >> 12) & 7), 1.0, 0.0);
}
}
}
static void
R_TeleportSplash_ID (const vec3_t org)
{
float vel;
int rnd, i, j, k;
int l = 896;
vec3_t dir, pdir, porg, pvel;
if (numparticles + l >= r_maxparticles) {
return;
} // else if (numparticles + l >= r_maxparticles) {
// l = r_maxparticles - numparticles;
// }
for (k = -24; k < 32; k += 4) {
dir[2] = k * 8;
for (i = -16; i < 16; i += 4) {
dir[1] = i * 8;
for (j = -16; j < 16; j += 4) {
dir[0] = j * 8;
VectorCopy (dir, pdir);
VectorNormalize (pdir);
rnd = mtwist_rand (&mt);
porg[0] = org[0] + i + (rnd & 3);
porg[1] = org[1] + j + ((rnd >> 2) & 3);
porg[2] = org[2] + k + ((rnd >> 4) & 3);
vel = 50 + ((rnd >> 6) & 63);
VectorScale (pdir, vel, pvel);
particle_new (pt_grav, part_tex_dot, porg, 1.0, pvel,
(vr_data.realtime + 0.2 + (mtwist_rand (&mt) & 7) * 0.02),
(7 + ((rnd >> 12) & 7)), 1.0, 0.0);
}
}
}
}
static void
R_DarkFieldParticles_ID (const entity_t *ent)
{
int i, j, k, l = 64;
unsigned int rnd;
float vel;
vec3_t dir, org, porg, pvel;
if (numparticles + l >= r_maxparticles) {
return;
} // else if (numparticles + l >= r_maxparticles) {
// l = r_maxparticles - numparticles;
// }
VectorCopy (ent->origin, org);
for (i = -16; i < 16; i += 8) {
dir [1] = i * 8;
for (j = -16; j < 16; j += 8) {
dir [0] = j * 8;
for (k = 0; k < 32; k += 8) {
dir [2] = k * 8;
rnd = mtwist_rand (&mt);
porg[0] = org[0] + i + ((rnd >> 3) & 3);
porg[1] = org[1] + j + ((rnd >> 5) & 3);
porg[2] = org[2] + k + ((rnd >> 7) & 3);
VectorNormalize (dir);
vel = 50 + ((rnd >> 9) & 63);
VectorScale (dir, vel, pvel);
particle_new (pt_slowgrav, part_tex_dot, porg, 1.5, pvel,
(vr_data.realtime + 0.2 + (rnd & 7) * 0.02),
(150 + mtwist_rand (&mt) % 6), 1.0, 0.0);
}
}
}
}
static vec3_t avelocities[NUMVERTEXNORMALS];
static void
R_EntityParticles_ID (const entity_t *ent)
{
int i, j = NUMVERTEXNORMALS;
float angle, sp, sy, cp, cy; // cr, sr
float beamlength = 16.0, dist = 64.0;
vec3_t forward, porg;
if (numparticles + j >= r_maxparticles) {
return;
} else if (numparticles + j >= r_maxparticles) {
j = r_maxparticles - numparticles;
}
if (!avelocities[0][0]) {
for (i = 0; i < NUMVERTEXNORMALS; i++) {
int k;
for (k = 0; k < 3; k++) {
avelocities[i][k] = (mtwist_rand (&mt) & 255) * 0.01;
}
}
}
for (i = 0; i < j; i++) {
angle = vr_data.realtime * avelocities[i][0];
cy = cos (angle);
sy = sin (angle);
angle = vr_data.realtime * avelocities[i][1];
cp = cos (angle);
sp = sin (angle);
// Next 3 lines results aren't currently used, may be in future. --Despair
// angle = vr_data.realtime * avelocities[i][2];
// sr = sin (angle);
// cr = cos (angle);
forward[0] = cp * cy;
forward[1] = cp * sy;
forward[2] = -sp;
porg[0] = ent->origin[0] + r_avertexnormals[i][0] * dist +
forward[0] * beamlength;
porg[1] = ent->origin[1] + r_avertexnormals[i][1] * dist +
forward[1] * beamlength;
porg[2] = ent->origin[2] + r_avertexnormals[i][2] * dist +
forward[2] * beamlength;
particle_new (pt_explode, part_tex_dot, porg, 1.0, vec3_origin,
vr_data.realtime + 0.01, 0x6f, 1.0, 0);
}
}
static void
R_RocketTrail_ID (const entity_t *ent)
{
float maxlen;
float dist = 3.0, len = 0.0;
int ramp, rnd;
vec3_t old_origin, org, subtract, vec;
if (numparticles >= r_maxparticles)
return;
VectorCopy (ent->old_origin, old_origin);
VectorSubtract (ent->origin, ent->old_origin, vec);
maxlen = VectorNormalize (vec);
VectorScale (vec, (maxlen - dist), subtract);
while (len < maxlen) {
rnd = mtwist_rand (&mt);
org[0] = old_origin[0] + ((rnd >> 12) & 7) * (5.0/7.0) - 2.5;
org[1] = old_origin[1] + ((rnd >> 9) & 7) * (5.0/7.0) - 2.5;
org[2] = old_origin[2] + ((rnd >> 6) & 7) * (5.0/7.0) - 2.5;
ramp = rnd & 3;
particle_new (pt_fire, part_tex_dot, org, 1.0, vec3_origin,
vr_data.realtime + 2.0, ramp3[ramp], 1.0, ramp);
if (numparticles >= r_maxparticles)
break;
len += dist;
VectorAdd (old_origin, subtract, old_origin);
}
}
static void
R_GrenadeTrail_ID (const entity_t *ent)
{
float maxlen;
float dist = 3.0, len = 0.0;
unsigned int ramp, rnd;
vec3_t old_origin, org, subtract, vec;
if (numparticles >= r_maxparticles)
return;
VectorCopy (ent->old_origin, old_origin);
VectorSubtract (ent->origin, ent->old_origin, vec);
maxlen = VectorNormalize (vec);
VectorScale (vec, maxlen - dist, subtract);
while (len < maxlen) {
rnd = mtwist_rand (&mt);
org[0] = old_origin[0] + ((rnd >> 12) & 7) * (5.0/7.0) - 2.5;
org[1] = old_origin[1] + ((rnd >> 9) & 7) * (5.0/7.0) - 2.5;
org[2] = old_origin[2] + ((rnd >> 6) & 7) * (5.0/7.0) - 2.5;
ramp = (rnd & 3) + 2;
particle_new (pt_fire, part_tex_dot, org, 1.0, vec3_origin,
vr_data.realtime + 2.0, ramp3[ramp], 1.0, ramp);
if (numparticles >= r_maxparticles)
break;
len += dist;
VectorAdd (old_origin, subtract, old_origin);
}
}
static void
R_BloodTrail_ID (const entity_t *ent)
{
float maxlen;
float dist = 3.0, len = 0.0;
unsigned int rnd;
vec3_t old_origin, subtract, vec, porg;
if (numparticles >= r_maxparticles)
return;
VectorCopy (ent->old_origin, old_origin);
VectorSubtract (ent->origin, old_origin, vec);
maxlen = VectorNormalize (vec);
VectorScale (vec, maxlen - dist, subtract);
while (len < maxlen) {
rnd = mtwist_rand (&mt);
porg[0] = old_origin[0] + ((rnd >> 12) & 7) * (5.0/7.0) - 2.5;
porg[1] = old_origin[1] + ((rnd >> 9) & 7) * (5.0/7.0) - 2.5;
porg[2] = old_origin[2] + ((rnd >> 6) & 7) * (5.0/7.0) - 2.5;
particle_new (pt_grav, part_tex_dot, porg, 1.0, vec3_origin,
vr_data.realtime + 2.0, 67 + (rnd & 3), 1.0, 0.0);
if (numparticles >= r_maxparticles)
break;
len += dist;
VectorAdd (old_origin, subtract, old_origin);
}
}
static void
R_SlightBloodTrail_ID (const entity_t *ent)
{
float maxlen;
float dist = 6.0, len = 0.0;
unsigned int rnd;
vec3_t old_origin, porg, subtract, vec;
if (numparticles >= r_maxparticles)
return;
VectorCopy (ent->old_origin, old_origin);
VectorSubtract (ent->origin, old_origin, vec);
maxlen = VectorNormalize (vec);
VectorScale (vec, maxlen - dist, subtract);
while (len < maxlen) {
rnd = mtwist_rand (&mt);
porg[0] = old_origin[0] + ((rnd >> 12) & 7) * (5.0/7.0) - 2.5;
porg[1] = old_origin[1] + ((rnd >> 9) & 7) * (5.0/7.0) - 2.5;
porg[2] = old_origin[2] + ((rnd >> 6) & 7) * (5.0/7.0) - 2.5;
particle_new (pt_grav, part_tex_dot, porg, 1.0, vec3_origin,
vr_data.realtime + 1.5, 67 + (rnd & 3), 1.0, 0.0);
if (numparticles >= r_maxparticles)
break;
len += dist;
VectorAdd (old_origin, subtract, old_origin);
}
}
static void
R_WizTrail_ID (const entity_t *ent)
{
float maxlen;
float dist = 3.0, len = 0.0;
static int tracercount;
vec3_t old_origin, pvel, subtract, vec;
if (numparticles >= r_maxparticles)
return;
VectorCopy (ent->old_origin, old_origin);
VectorSubtract (ent->origin, old_origin, vec);
maxlen = VectorNormalize (vec);
VectorScale (vec, maxlen - dist, subtract);
while (len < maxlen) {
tracercount++;
if (tracercount & 1) {
pvel[0] = 30.0 * vec[1];
pvel[1] = 30.0 * -vec[0];
} else {
pvel[0] = 30.0 * -vec[1];
pvel[1] = 30.0 * vec[0];
}
pvel[2] = 0.0;
particle_new (pt_static, part_tex_dot, old_origin, 1.0, pvel,
vr_data.realtime + 0.5, 52 + ((tracercount & 4) << 1),
1.0, 0.0);
if (numparticles >= r_maxparticles)
break;
len += dist;
VectorAdd (old_origin, subtract, old_origin);
}
}
static void
R_FlameTrail_ID (const entity_t *ent)
{
float maxlen;
float dist = 3.0, len = 0.0;
static int tracercount;
vec3_t old_origin, pvel, subtract, vec;
if (numparticles >= r_maxparticles)
return;
VectorCopy (ent->old_origin, old_origin);
VectorSubtract (ent->origin, old_origin, vec);
maxlen = VectorNormalize (vec);
VectorScale (vec, maxlen - dist, subtract);
while (len < maxlen) {
tracercount++;
if (tracercount & 1) {
pvel[0] = 30.0 * vec[1];
pvel[1] = 30.0 * -vec[0];
} else {
pvel[0] = 30.0 * -vec[1];
pvel[1] = 30.0 * vec[0];
}
pvel[2] = 0.0;
particle_new (pt_static, part_tex_dot, old_origin, 1.0, pvel,
vr_data.realtime + 0.5, 230 + ((tracercount & 4) << 1),
1.0, 0.0);
if (numparticles >= r_maxparticles)
break;
len += dist;
VectorAdd (old_origin, subtract, old_origin);
}
}
static void
R_VoorTrail_ID (const entity_t *ent)
{
float maxlen;
float dist = 3.0, len = 0.0;
unsigned int rnd;
vec3_t old_origin, porg, subtract, vec;
if (numparticles >= r_maxparticles)
return;
VectorCopy (ent->old_origin, old_origin);
VectorSubtract (ent->origin, old_origin, vec);
maxlen = VectorNormalize (vec);
VectorScale (vec, maxlen - dist, subtract);
while (len < maxlen) {
rnd = mtwist_rand (&mt);
porg[0] = old_origin[0] + ((rnd >> 3) & 15) - 7.5;
porg[1] = old_origin[1] + ((rnd >> 7) & 15) - 7.5;
porg[2] = old_origin[2] + ((rnd >> 11) & 15) - 7.5;
particle_new (pt_static, part_tex_dot, porg, 1.0, vec3_origin,
vr_data.realtime + 0.3, 9 * 16 + 8 + (rnd & 3),
1.0, 0.0);
if (numparticles >= r_maxparticles)
break;
len += dist;
VectorAdd (old_origin, subtract, old_origin);
}
}
void
gl_R_DrawParticles (void)
{
unsigned char *at;
int activeparticles, maxparticle, j, vacount;
unsigned int k;
float minparticledist, scale;
particle_t *part;
vec3_t up_scale, right_scale, up_right_scale, down_right_scale;
varray_t2f_c4ub_v3f_t *VA;
if (!r_particles->int_val)
return;
qfglBindTexture (GL_TEXTURE_2D, gl_part_tex);
// LordHavoc: particles should not affect zbuffer
qfglDepthMask (GL_FALSE);
qfglInterleavedArrays (GL_T2F_C4UB_V3F, 0, particleVertexArray);
minparticledist = DotProduct (r_refdef.vieworg, vpn) +
r_particles_nearclip->value;
activeparticles = 0;
vacount = 0;
VA = particleVertexArray;
maxparticle = -1;
j = 0;
for (k = 0, part = particles; k < numparticles; k++, part++) {
// Don't render particles too close to us.
// Note, we must still do physics and such on them.
if (!(DotProduct (part->org, vpn) < minparticledist)) {
at = (byte *) &d_8to24table[(byte) part->color];
VA[0].color[0] = at[0];
VA[0].color[1] = at[1];
VA[0].color[2] = at[2];
VA[0].color[3] = part->alpha * 255;
memcpy (VA[1].color, VA[0].color, sizeof (VA[0].color));
memcpy (VA[2].color, VA[0].color, sizeof (VA[0].color));
memcpy (VA[3].color, VA[0].color, sizeof (VA[0].color));
switch (part->tex) {
case part_tex_dot:
VA[0].texcoord[0] = 0.0;
VA[0].texcoord[1] = 0.0;
VA[1].texcoord[0] = 0.5;
VA[1].texcoord[1] = 0.0;
VA[2].texcoord[0] = 0.5;
VA[2].texcoord[1] = 0.5;
VA[3].texcoord[0] = 0.0;
VA[3].texcoord[1] = 0.5;
break;
case part_tex_spark:
VA[0].texcoord[0] = 0.5;
VA[0].texcoord[1] = 0.0;
VA[1].texcoord[0] = 1.0;
VA[1].texcoord[1] = 0.0;
VA[2].texcoord[0] = 1.0;
VA[2].texcoord[1] = 0.5;
VA[3].texcoord[0] = 0.5;
VA[3].texcoord[1] = 0.5;
break;
case part_tex_smoke:
VA[0].texcoord[0] = 0.0;
VA[0].texcoord[1] = 0.5;
VA[1].texcoord[0] = 0.5;
VA[1].texcoord[1] = 0.5;
VA[2].texcoord[0] = 0.5;
VA[2].texcoord[1] = 1.0;
VA[3].texcoord[0] = 0.0;
VA[3].texcoord[1] = 1.0;
break;
}
scale = part->scale;
VectorScale (vup, scale, up_scale);
VectorScale (vright, scale, right_scale);
VectorAdd (right_scale, up_scale, up_right_scale);
VectorSubtract (right_scale, up_scale, down_right_scale);
VectorAdd (part->org, down_right_scale, VA[0].vertex);
VectorSubtract (part->org, up_right_scale, VA[1].vertex);
VectorSubtract (part->org, down_right_scale, VA[2].vertex);
VectorAdd (part->org, up_right_scale, VA[3].vertex);
VA += 4;
vacount += 4;
if (vacount + 4 > pVAsize) {
// never reached if partUseVA is false
qfglDrawElements (GL_QUADS, vacount, GL_UNSIGNED_INT,
pVAindices);
vacount = 0;
VA = particleVertexArray;
}
}
part->phys (part);
// LordHavoc: immediate removal of unnecessary particles (must be done
// to ensure compactor below operates properly in all cases)
if (part->die < vr_data.realtime) {
freeparticles[j++] = part;
} else {
maxparticle = k;
activeparticles++;
}
}
if (vacount) {
if (partUseVA) {
qfglDrawElements (GL_QUADS, vacount, GL_UNSIGNED_INT, pVAindices);
} else {
varray_t2f_c4ub_v3f_t *va = particleVertexArray;
int i;
qfglBegin (GL_QUADS);
for (i = 0; i < vacount; i++, va++) {
qfglTexCoord2fv (va->texcoord);
qfglColor4ubv (va->color);
qfglVertex3fv (va->vertex);
}
qfglEnd ();
}
}
k = 0;
while (maxparticle >= activeparticles) {
*freeparticles[k++] = particles[maxparticle--];
while (maxparticle >= activeparticles &&
particles[maxparticle].die <= vr_data.realtime)
maxparticle--;
}
numparticles = activeparticles;
qfglColor3ubv (color_white);
qfglDepthMask (GL_TRUE);
}
static void
gl_R_Particle_New (ptype_t type, int texnum, const vec3_t org, float scale,
const vec3_t vel, float die, int color, float alpha,
float ramp)
{
if (numparticles >= r_maxparticles)
return;
particle_new (type, texnum, org, scale, vel, die, color, alpha, ramp);
}
static void
gl_R_Particle_NewRandom (ptype_t type, int texnum, const vec3_t org,
int org_fuzz, float scale, int vel_fuzz, float die,
int color, float alpha, float ramp)
{
if (numparticles >= r_maxparticles)
return;
particle_new_random (type, texnum, org, org_fuzz, scale, vel_fuzz, die,
color, alpha, ramp);
}
static vid_particle_funcs_t particles_QF = {
R_RocketTrail_QF,
R_GrenadeTrail_QF,
R_BloodTrail_QF,
R_SlightBloodTrail_QF,
R_WizTrail_QF,
R_FlameTrail_QF,
R_VoorTrail_QF,
R_GlowTrail_QF,
R_RunParticleEffect_QF,
R_BloodPuffEffect_QF,
R_GunshotEffect_QF,
R_LightningBloodEffect_QF,
R_SpikeEffect_QF,
R_KnightSpikeEffect_QF,
R_SuperSpikeEffect_QF,
R_WizSpikeEffect_QF,
R_BlobExplosion_QF,
R_ParticleExplosion_QF,
R_ParticleExplosion2_QF,
R_LavaSplash_QF,
R_TeleportSplash_QF,
R_DarkFieldParticles_ID,
R_EntityParticles_ID,
R_Particle_New,
R_Particle_NewRandom,
};
static vid_particle_funcs_t particles_ID = {
R_RocketTrail_ID,
R_GrenadeTrail_ID,
R_BloodTrail_ID,
R_SlightBloodTrail_ID,
R_WizTrail_ID,
R_FlameTrail_ID,
R_VoorTrail_ID,
R_GlowTrail_QF,
R_RunParticleEffect_ID,
R_BloodPuffEffect_ID,
R_GunshotEffect_ID,
R_LightningBloodEffect_ID,
R_SpikeEffect_ID,
R_KnightSpikeEffect_ID,
R_SuperSpikeEffect_ID,
R_WizSpikeEffect_ID,
R_BlobExplosion_ID,
R_ParticleExplosion_ID,
R_ParticleExplosion2_QF,
R_LavaSplash_ID,
R_TeleportSplash_ID,
R_DarkFieldParticles_ID,
R_EntityParticles_ID,
R_Particle_New,
R_Particle_NewRandom,
};
static vid_particle_funcs_t particles_QF_egg = {
R_RocketTrail_EE,
R_GrenadeTrail_EE,
R_BloodTrail_QF,
R_SlightBloodTrail_QF,
R_WizTrail_QF,
R_FlameTrail_QF,
R_VoorTrail_QF,
R_GlowTrail_QF,
R_RunParticleEffect_QF,
R_BloodPuffEffect_QF,
R_GunshotEffect_QF,
R_LightningBloodEffect_QF,
R_SpikeEffect_QF,
R_KnightSpikeEffect_QF,
R_SuperSpikeEffect_QF,
R_WizSpikeEffect_QF,
R_BlobExplosion_QF,
R_ParticleExplosion_EE,
R_ParticleExplosion2_QF,
R_LavaSplash_QF,
R_TeleportSplash_EE,
R_DarkFieldParticles_ID,
R_EntityParticles_ID,
R_Particle_New,
R_Particle_NewRandom,
};
static vid_particle_funcs_t particles_ID_egg = {
R_RocketTrail_EE,
R_GrenadeTrail_EE,
R_BloodTrail_ID,
R_SlightBloodTrail_ID,
R_WizTrail_ID,
R_FlameTrail_ID,
R_VoorTrail_ID,
R_GlowTrail_QF,
R_RunParticleEffect_ID,
R_BloodPuffEffect_ID,
R_GunshotEffect_ID,
R_LightningBloodEffect_ID,
R_SpikeEffect_ID,
R_KnightSpikeEffect_ID,
R_SuperSpikeEffect_ID,
R_WizSpikeEffect_ID,
R_BlobExplosion_ID,
R_ParticleExplosion_EE,
R_ParticleExplosion2_QF,
R_LavaSplash_ID,
R_TeleportSplash_EE,
R_DarkFieldParticles_ID,
R_EntityParticles_ID,
R_Particle_New,
R_Particle_NewRandom,
};
void
gl_r_easter_eggs_f (cvar_t *var)
{
if (easter_eggs && !gl_feature_mach64) {
if (easter_eggs->int_val) {
if (r_particles_style->int_val) {
gl_vid_render_funcs.particles = &particles_QF_egg;
} else {
gl_vid_render_funcs.particles = &particles_ID_egg;
}
} else if (r_particles_style) {
if (r_particles_style->int_val) {
gl_vid_render_funcs.particles = &particles_QF;
} else {
gl_vid_render_funcs.particles = &particles_ID;
}
}
}
}
void
gl_r_particles_style_f (cvar_t *var)
{
gl_r_easter_eggs_f (easter_eggs);
}
static void
R_ParticleFunctionInit (void)
{
gl_r_particles_style_f (r_particles_style);
gl_r_easter_eggs_f (easter_eggs);
}
static void
r_particles_nearclip_f (cvar_t *var)
{
Cvar_SetValue (r_particles_nearclip, bound (r_nearclip->value, var->value,
r_farclip->value));
}
static void
r_particles_f (cvar_t *var)
{
R_MaxParticlesCheck (var, r_particles_max);
}
static void
r_particles_max_f (cvar_t *var)
{
R_MaxParticlesCheck (r_particles, var);
}
void
gl_R_Particles_Init_Cvars (void)
{
easter_eggs = Cvar_Get ("easter_eggs", "0", CVAR_NONE, r_easter_eggs_f,
"Enables easter eggs.");
r_particles = Cvar_Get ("r_particles", "1", CVAR_ARCHIVE, r_particles_f,
"Toggles drawing of particles.");
r_particles_max = Cvar_Get ("r_particles_max", "2048", CVAR_ARCHIVE,
r_particles_max_f, "Maximum amount of "
"particles to display. No maximum, minimum "
"is 0.");
r_particles_nearclip = Cvar_Get ("r_particles_nearclip", "32",
CVAR_ARCHIVE, r_particles_nearclip_f,
"Distance of the particle near clipping "
"plane from the player.");
r_particles_style = Cvar_Get ("r_particles_style", "1", CVAR_ARCHIVE,
r_particles_style_f, "Sets particle style. "
"0 for Id, 1 for QF.");
R_ParticleFunctionInit ();
}
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