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step/count extension to handle additional random values

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git-svn-id: https://svn.code.sf.net/p/fteqw/code/trunk@1740 fc73d0e0-1445-4013-8a0c-d673dee63da5
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TimeServ 2005-12-23 09:31:17 +00:00
parent a0498dcb3c
commit 996757ec23
1 changed files with 17 additions and 9 deletions
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26
engine/client/r_part.c
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@ -207,6 +207,7 @@ typedef struct part_type_s {
float scaledelta;
float count;
float countrand;
int texturenum;
int assoc;
int cliptype;
@ -538,10 +539,12 @@ void P_ParticleEffect_f(void)
else if (!strcmp(var, "scaledelta"))
ptype->scaledelta = atof(value);
else if (!strcmp(var, "step"))
ptype->count = 1/atof(value);
else if (!strcmp(var, "count"))
else if (!strcmp(var, "count") || !strcmp(var, "step"))
{
ptype->count = atof(value);
if (Cmd_Argc()>2)
ptype->countrand = atof(Cmd_Argv(2));
}
else if (!strcmp(var, "alpha"))
ptype->alpha = atof(value);
@ -2075,7 +2078,7 @@ int P_RunParticleEffectState (vec3_t org, vec3_t dir, float count, int typenum,
// init spawn specific variables
b = bfirst = NULL;
spawnspc = 8;
pcount = count*ptype->count;
pcount = count*(ptype->count+ptype->countrand*frandom());
if (ptype->flags & PT_INVFRAMETIME)
pcount /= host_frametime;
if (ts)
@ -2766,7 +2769,7 @@ static void P_ParticleTrailDraw (vec3_t startpos, vec3_t end, part_type_t *ptype
ts = NULL;
// use ptype step to calc step vector and step size
step = 1/ptype->count;
step = ptype->count;
if (step < 0.01)
step = 0.01;
@ -2874,9 +2877,9 @@ static void P_ParticleTrailDraw (vec3_t startpos, vec3_t end, part_type_t *ptype
// if (ptype->spawnmode == SM_TRACER)
if (ptype->spawnparam1)
tcount = (int)(len * ptype->count / ptype->spawnparam1);
tcount = (int)(len / ptype->count / ptype->spawnparam1);
else
tcount = (int)(len * ptype->count);
tcount = (int)(len / ptype->count);
if (ptype->colorindex >= 0)
{
@ -2896,8 +2899,6 @@ static void P_ParticleTrailDraw (vec3_t startpos, vec3_t end, part_type_t *ptype
else
VectorCopy(ptype->rgb, p->rgb);
// use org temporarily for rgbsync
p->org[2] = frandom();
p->org[0] = p->org[2]*ptype->rgbrandsync[0] + frandom()*(1-ptype->rgbrandsync[0]);
@ -3039,6 +3040,13 @@ static void P_ParticleTrailDraw (vec3_t startpos, vec3_t end, part_type_t *ptype
VectorAdd (start, vstep, start);
if (ptype->countrand)
{
float rstep = ptype->countrand * frandom();
VectorMA(start, rstep, vec, start);
step += rstep;
}
p->die = particletime + ptype->die - p->die;
}