ref: 61e35a208c16f339e39e5b4d6244e12ddcc980f7
dir: /cl_newfx.c/
// cl_newfx.c -- MORE entity effects parsing and management
#include <u.h>
#include <libc.h>
#include <stdio.h>
#include "dat.h"
#include "fns.h"
extern cparticle_t *active_particles, *free_particles;
extern cparticle_t particles[MAX_PARTICLES];
extern int cl_numparticles;
extern void MakeNormalVectors (vec3_t forward, vec3_t right, vec3_t up);
/*
======
vectoangles2 - this is duplicated in the game DLL, but I need it here.
======
*/
void vectoangles2 (vec3_t value1, vec3_t angles)
{
float forward;
float yaw, pitch;
if (value1[1] == 0 && value1[0] == 0)
{
yaw = 0;
if (value1[2] > 0)
pitch = 90;
else
pitch = 270;
}
else
{
// PMM - fixed to correct for pitch of 0
if (value1[0])
yaw = (atan2(value1[1], value1[0]) * 180 / M_PI);
else if (value1[1] > 0)
yaw = 90;
else
yaw = 270;
if (yaw < 0)
yaw += 360;
forward = sqrt (value1[0]*value1[0] + value1[1]*value1[1]);
pitch = (atan2(value1[2], forward) * 180 / M_PI);
if (pitch < 0)
pitch += 360;
}
angles[PITCH] = -pitch;
angles[YAW] = yaw;
angles[ROLL] = 0;
}
//=============
//=============
void CL_Flashlight (int ent, vec3_t pos)
{
cdlight_t *dl;
dl = CL_AllocDlight (ent);
VectorCopy (pos, dl->origin);
dl->radius = 400;
dl->minlight = 250;
dl->die = cl.time + 100;
dl->color[0] = 1;
dl->color[1] = 1;
dl->color[2] = 1;
}
/*
======
CL_ColorFlash - flash of light
======
*/
void CL_ColorFlash (vec3_t pos, int ent, int intensity, float r, float g, float b)
{
cdlight_t *dl;
if((vidref_val == VIDREF_SOFT) && ((r < 0) || (g<0) || (b<0)))
{
intensity = -intensity;
r = -r;
g = -g;
b = -b;
}
dl = CL_AllocDlight (ent);
VectorCopy (pos, dl->origin);
dl->radius = intensity;
dl->minlight = 250;
dl->die = cl.time + 100;
dl->color[0] = r;
dl->color[1] = g;
dl->color[2] = b;
}
/*
======
CL_DebugTrail
======
*/
void CL_DebugTrail (vec3_t start, vec3_t end)
{
vec3_t move;
vec3_t vec;
float len;
// int j;
cparticle_t *p;
float dec;
vec3_t right, up;
// int i;
// float d, c, s;
// vec3_t dir;
VectorCopy (start, move);
VectorSubtract (end, start, vec);
len = VectorNormalize (vec);
MakeNormalVectors (vec, right, up);
// VectorScale(vec, RT2_SKIP, vec);
// dec = 1.0;
// dec = 0.75;
dec = 3;
VectorScale (vec, dec, vec);
VectorCopy (start, move);
while (len > 0)
{
len -= dec;
if (!free_particles)
return;
p = free_particles;
free_particles = p->next;
p->next = active_particles;
active_particles = p;
p->time = cl.time;
VectorClear (p->accel);
VectorClear (p->vel);
p->alpha = 1.0;
p->alphavel = -0.1;
// p->alphavel = 0;
p->color = 0x74 + (rand()&7);
VectorCopy (move, p->org);
/*
for (j=0 ; j<3 ; j++)
{
p->org[j] = move[j] + crand()*2;
p->vel[j] = crand()*3;
p->accel[j] = 0;
}
*/
VectorAdd (move, vec, move);
}
}
/*
===============
CL_SmokeTrail
===============
*/
void CL_SmokeTrail (vec3_t start, vec3_t end, int colorStart, int colorRun, int spacing)
{
vec3_t move;
vec3_t vec;
float len;
int j;
cparticle_t *p;
VectorCopy (start, move);
VectorSubtract (end, start, vec);
len = VectorNormalize (vec);
VectorScale (vec, spacing, vec);
// FIXME: this is a really silly way to have a loop
while (len > 0)
{
len -= spacing;
if (!free_particles)
return;
p = free_particles;
free_particles = p->next;
p->next = active_particles;
active_particles = p;
VectorClear (p->accel);
p->time = cl.time;
p->alpha = 1.0;
p->alphavel = -1.0 / (1+qfrand()*0.5);
p->color = colorStart + (rand() % colorRun);
for (j=0 ; j<3 ; j++)
{
p->org[j] = move[j] + crand()*3;
p->accel[j] = 0;
}
p->vel[2] = 20 + crand()*5;
VectorAdd (move, vec, move);
}
}
void CL_ForceWall (vec3_t start, vec3_t end, int color)
{
vec3_t move;
vec3_t vec;
float len;
int j;
cparticle_t *p;
VectorCopy (start, move);
VectorSubtract (end, start, vec);
len = VectorNormalize (vec);
VectorScale (vec, 4, vec);
// FIXME: this is a really silly way to have a loop
while (len > 0)
{
len -= 4;
if (!free_particles)
return;
if (qfrand() > 0.3)
{
p = free_particles;
free_particles = p->next;
p->next = active_particles;
active_particles = p;
VectorClear (p->accel);
p->time = cl.time;
p->alpha = 1.0;
p->alphavel = -1.0 / (3.0+qfrand()*0.5);
p->color = color;
for (j=0 ; j<3 ; j++)
{
p->org[j] = move[j] + crand()*3;
p->accel[j] = 0;
}
p->vel[0] = 0;
p->vel[1] = 0;
p->vel[2] = -40 - (crand()*10);
}
VectorAdd (move, vec, move);
}
}
void CL_FlameEffects (centity_t */*ent*/, vec3_t origin)
{
int n, count;
int j;
cparticle_t *p;
count = rand() & 0xF;
for(n=0;n<count;n++)
{
if (!free_particles)
return;
p = free_particles;
free_particles = p->next;
p->next = active_particles;
active_particles = p;
VectorClear (p->accel);
p->time = cl.time;
p->alpha = 1.0;
p->alphavel = -1.0 / (1+qfrand()*0.2);
p->color = 226 + (rand() % 4);
for (j=0 ; j<3 ; j++)
{
p->org[j] = origin[j] + crand()*5;
p->vel[j] = crand()*5;
}
p->vel[2] = crand() * -10;
p->accel[2] = -PARTICLE_GRAVITY;
}
count = rand() & 0x7;
for(n=0;n<count;n++)
{
if (!free_particles)
return;
p = free_particles;
free_particles = p->next;
p->next = active_particles;
active_particles = p;
VectorClear (p->accel);
p->time = cl.time;
p->alpha = 1.0;
p->alphavel = -1.0 / (1+qfrand()*0.5);
p->color = 0 + (rand() % 4);
for (j=0 ; j<3 ; j++)
{
p->org[j] = origin[j] + crand()*3;
}
p->vel[2] = 20 + crand()*5;
}
}
/*
===============
CL_GenericParticleEffect
===============
*/
void CL_GenericParticleEffect (vec3_t org, vec3_t dir, int color, int count, int numcolors, int dirspread, float alphavel)
{
int i, j;
cparticle_t *p;
float d;
for (i=0 ; i<count ; i++)
{
if (!free_particles)
return;
p = free_particles;
free_particles = p->next;
p->next = active_particles;
active_particles = p;
p->time = cl.time;
if (numcolors > 1)
p->color = color + (rand() & numcolors);
else
p->color = color;
d = rand() & dirspread;
for (j=0 ; j<3 ; j++)
{
p->org[j] = org[j] + ((rand()&7)-4) + d*dir[j];
p->vel[j] = crand()*20;
}
p->accel[0] = p->accel[1] = 0;
p->accel[2] = -PARTICLE_GRAVITY;
// VectorCopy (accel, p->accel);
p->alpha = 1.0;
p->alphavel = -1.0 / (0.5 + qfrand()*alphavel);
// p->alphavel = alphavel;
}
}
/*
===============
CL_BubbleTrail2 (lets you control the # of bubbles by setting the distance between the spawns)
===============
*/
void CL_BubbleTrail2 (vec3_t start, vec3_t end, int dist)
{
vec3_t move;
vec3_t vec;
float len;
int i, j;
cparticle_t *p;
float dec;
VectorCopy (start, move);
VectorSubtract (end, start, vec);
len = VectorNormalize (vec);
dec = dist;
VectorScale (vec, dec, vec);
for (i=0 ; i<len ; i+=dec)
{
if (!free_particles)
return;
p = free_particles;
free_particles = p->next;
p->next = active_particles;
active_particles = p;
VectorClear (p->accel);
p->time = cl.time;
p->alpha = 1.0;
p->alphavel = -1.0 / (1+qfrand()*0.1);
p->color = 4 + (rand()&7);
for (j=0 ; j<3 ; j++)
{
p->org[j] = move[j] + crand()*2;
p->vel[j] = crand()*10;
}
p->org[2] -= 4;
// p->vel[2] += 6;
p->vel[2] += 20;
VectorAdd (move, vec, move);
}
}
//#define CORKSCREW 1
//#define DOUBLE_SCREW 1
#define RINGS 1
//#define SPRAY 1
#ifdef CORKSCREW
void CL_Heatbeam (vec3_t start, vec3_t end)
{
vec3_t move;
vec3_t vec;
float len;
int j,k;
cparticle_t *p;
vec3_t right, up;
int i;
float d, c, s;
vec3_t dir;
float ltime;
float step = 5.0;
VectorCopy (start, move);
VectorSubtract (end, start, vec);
len = VectorNormalize (vec);
// MakeNormalVectors (vec, right, up);
VectorCopy (cl.v_right, right);
VectorCopy (cl.v_up, up);
VectorMA (move, -1, right, move);
VectorMA (move, -1, up, move);
VectorScale (vec, step, vec);
ltime = (float) cl.time/1000.0;
// for (i=0 ; i<len ; i++)
for (i=0 ; i<len ; i+=step)
{
d = i * 0.1 - fmod(ltime,16.0)*M_PI;
c = cos(d)/1.75;
s = sin(d)/1.75;
#ifdef DOUBLE_SCREW
for (k=-1; k<2; k+=2)
{
#else
k=1;
#endif
if (!free_particles)
return;
p = free_particles;
free_particles = p->next;
p->next = active_particles;
active_particles = p;
p->time = cl.time;
VectorClear (p->accel);
p->alpha = 0.5;
// p->alphavel = -1.0 / (1+qfrand()*0.2);
// only last one frame!
p->alphavel = INSTANT_PARTICLE;
// p->color = 0x74 + (rand()&7);
// p->color = 223 - (rand()&7);
p->color = 223;
// p->color = 240;
// trim it so it looks like it's starting at the origin
if (i < 10)
{
VectorScale (right, c*(i/10.0)*k, dir);
VectorMA (dir, s*(i/10.0)*k, up, dir);
}
else
{
VectorScale (right, c*k, dir);
VectorMA (dir, s*k, up, dir);
}
for (j=0 ; j<3 ; j++)
{
p->org[j] = move[j] + dir[j]*3;
// p->vel[j] = dir[j]*6;
p->vel[j] = 0;
}
#ifdef DOUBLE_SCREW
}
#endif
VectorAdd (move, vec, move);
}
}
#endif
#ifdef RINGS
//void CL_Heatbeam (vec3_t start, vec3_t end)
void CL_Heatbeam (vec3_t start, vec3_t forward)
{
vec3_t move;
vec3_t vec;
float len;
int j;
cparticle_t *p;
vec3_t right, up;
int i;
float c, s;
vec3_t dir;
float ltime;
float step = 32.0, rstep;
float start_pt;
float rot;
float variance;
vec3_t end;
VectorMA (start, 4096, forward, end);
VectorCopy (start, move);
VectorSubtract (end, start, vec);
len = VectorNormalize (vec);
// FIXME - pmm - these might end up using old values?
// MakeNormalVectors (vec, right, up);
VectorCopy (cl.v_right, right);
VectorCopy (cl.v_up, up);
if (vidref_val == VIDREF_GL)
{ // GL mode
VectorMA (move, -0.5, right, move);
VectorMA (move, -0.5, up, move);
}
// otherwise assume SOFT
ltime = (float) cl.time/1000.0;
start_pt = fmod(ltime*96.0,step);
VectorMA (move, start_pt, vec, move);
VectorScale (vec, step, vec);
// Com_Printf ("%f\n", ltime);
rstep = M_PI/10.0;
for (i=start_pt ; i<len ; i+=step)
{
if (i>step*5) // don't bother after the 5th ring
break;
for (rot = 0; rot < M_PI*2; rot += rstep)
{
if (!free_particles)
return;
p = free_particles;
free_particles = p->next;
p->next = active_particles;
active_particles = p;
p->time = cl.time;
VectorClear (p->accel);
// rot+= fmod(ltime, 12.0)*M_PI;
// c = cos(rot)/2.0;
// s = sin(rot)/2.0;
// variance = 0.4 + ((float)rand()/(float)RAND_MAX) *0.2;
variance = 0.5;
c = cos(rot)*variance;
s = sin(rot)*variance;
// trim it so it looks like it's starting at the origin
if (i < 10)
{
VectorScale (right, c*(i/10.0), dir);
VectorMA (dir, s*(i/10.0), up, dir);
}
else
{
VectorScale (right, c, dir);
VectorMA (dir, s, up, dir);
}
p->alpha = 0.5;
// p->alphavel = -1.0 / (1+qfrand()*0.2);
p->alphavel = -1000.0;
// p->color = 0x74 + (rand()&7);
p->color = 223 - (rand()&7);
for (j=0 ; j<3 ; j++)
{
p->org[j] = move[j] + dir[j]*3;
// p->vel[j] = dir[j]*6;
p->vel[j] = 0;
}
}
VectorAdd (move, vec, move);
}
}
#endif
#ifdef SPRAY
void CL_Heatbeam (vec3_t start, vec3_t end)
{
vec3_t move;
vec3_t vec;
float len;
int j;
cparticle_t *p;
vec3_t forward, right, up;
int i;
float d, c, s;
vec3_t dir;
float ltime;
float step = 32.0, rstep;
float start_pt;
float rot;
VectorCopy (start, move);
VectorSubtract (end, start, vec);
len = VectorNormalize (vec);
// MakeNormalVectors (vec, right, up);
VectorCopy (cl.v_forward, forward);
VectorCopy (cl.v_right, right);
VectorCopy (cl.v_up, up);
VectorMA (move, -0.5, right, move);
VectorMA (move, -0.5, up, move);
for (i=0; i<8; i++)
{
if (!free_particles)
return;
p = free_particles;
free_particles = p->next;
p->next = active_particles;
active_particles = p;
p->time = cl.time;
VectorClear (p->accel);
d = crand()*M_PI;
c = cos(d)*30;
s = sin(d)*30;
p->alpha = 1.0;
p->alphavel = -5.0 / (1+qfrand());
p->color = 223 - (rand()&7);
for (j=0 ; j<3 ; j++)
{
p->org[j] = move[j];
}
VectorScale (vec, 450, p->vel);
VectorMA (p->vel, c, right, p->vel);
VectorMA (p->vel, s, up, p->vel);
}
/*
ltime = (float) cl.time/1000.0;
start_pt = fmod(ltime*16.0,step);
VectorMA (move, start_pt, vec, move);
VectorScale (vec, step, vec);
// Com_Printf ("%f\n", ltime);
rstep = M_PI/12.0;
for (i=start_pt ; i<len ; i+=step)
{
if (i>step*5) // don't bother after the 5th ring
break;
for (rot = 0; rot < M_PI*2; rot += rstep)
{
if (!free_particles)
return;
p = free_particles;
free_particles = p->next;
p->next = active_particles;
active_particles = p;
p->time = cl.time;
VectorClear (p->accel);
// rot+= fmod(ltime, 12.0)*M_PI;
// c = cos(rot)/2.0;
// s = sin(rot)/2.0;
c = cos(rot)/1.5;
s = sin(rot)/1.5;
// trim it so it looks like it's starting at the origin
if (i < 10)
{
VectorScale (right, c*(i/10.0), dir);
VectorMA (dir, s*(i/10.0), up, dir);
}
else
{
VectorScale (right, c, dir);
VectorMA (dir, s, up, dir);
}
p->alpha = 0.5;
// p->alphavel = -1.0 / (1+qfrand()*0.2);
p->alphavel = -1000.0;
// p->color = 0x74 + (rand()&7);
p->color = 223 - (rand()&7);
for (j=0 ; j<3 ; j++)
{
p->org[j] = move[j] + dir[j]*3;
// p->vel[j] = dir[j]*6;
p->vel[j] = 0;
}
}
VectorAdd (move, vec, move);
}
*/
}
#endif
/*
===============
CL_ParticleSteamEffect
Puffs with velocity along direction, with some randomness thrown in
===============
*/
void CL_ParticleSteamEffect (vec3_t org, vec3_t dir, int color, int count, int magnitude)
{
int i, j;
cparticle_t *p;
float d;
vec3_t r, u;
// vectoangles2 (dir, angle_dir);
// AngleVectors (angle_dir, f, r, u);
MakeNormalVectors (dir, r, u);
for (i=0 ; i<count ; i++)
{
if (!free_particles)
return;
p = free_particles;
free_particles = p->next;
p->next = active_particles;
active_particles = p;
p->time = cl.time;
p->color = color + (rand()&7);
for (j=0 ; j<3 ; j++)
{
p->org[j] = org[j] + magnitude*0.1*crand();
// p->vel[j] = dir[j]*magnitude;
}
VectorScale (dir, magnitude, p->vel);
d = crand()*magnitude/3;
VectorMA (p->vel, d, r, p->vel);
d = crand()*magnitude/3;
VectorMA (p->vel, d, u, p->vel);
p->accel[0] = p->accel[1] = 0;
p->accel[2] = -PARTICLE_GRAVITY/2;
p->alpha = 1.0;
p->alphavel = -1.0 / (0.5 + qfrand()*0.3);
}
}
void CL_ParticleSteamEffect2 (cl_sustain_t *self)
//vec3_t org, vec3_t dir, int color, int count, int magnitude)
{
int i, j;
cparticle_t *p;
float d;
vec3_t r, u;
vec3_t dir;
// vectoangles2 (dir, angle_dir);
// AngleVectors (angle_dir, f, r, u);
VectorCopy (self->dir, dir);
MakeNormalVectors (dir, r, u);
for (i=0 ; i<self->count ; i++)
{
if (!free_particles)
return;
p = free_particles;
free_particles = p->next;
p->next = active_particles;
active_particles = p;
p->time = cl.time;
p->color = self->color + (rand()&7);
for (j=0 ; j<3 ; j++)
{
p->org[j] = self->org[j] + self->magnitude*0.1*crand();
// p->vel[j] = dir[j]*magnitude;
}
VectorScale (dir, self->magnitude, p->vel);
d = crand()*self->magnitude/3;
VectorMA (p->vel, d, r, p->vel);
d = crand()*self->magnitude/3;
VectorMA (p->vel, d, u, p->vel);
p->accel[0] = p->accel[1] = 0;
p->accel[2] = -PARTICLE_GRAVITY/2;
p->alpha = 1.0;
p->alphavel = -1.0 / (0.5 + qfrand()*0.3);
}
self->nextthink += self->thinkinterval;
}
/*
===============
CL_TrackerTrail
===============
*/
void CL_TrackerTrail (vec3_t start, vec3_t end, int particleColor)
{
vec3_t move;
vec3_t vec;
vec3_t forward,right,up,angle_dir;
float len;
int j;
cparticle_t *p;
int dec;
float dist;
VectorCopy (start, move);
VectorSubtract (end, start, vec);
len = VectorNormalize (vec);
VectorCopy(vec, forward);
vectoangles2 (forward, angle_dir);
AngleVectors (angle_dir, forward, right, up);
dec = 3;
VectorScale (vec, 3, vec);
// FIXME: this is a really silly way to have a loop
while (len > 0)
{
len -= dec;
if (!free_particles)
return;
p = free_particles;
free_particles = p->next;
p->next = active_particles;
active_particles = p;
VectorClear (p->accel);
p->time = cl.time;
p->alpha = 1.0;
p->alphavel = -2.0;
p->color = particleColor;
dist = DotProduct(move, forward);
VectorMA(move, 8 * cos(dist), up, p->org);
for (j=0 ; j<3 ; j++)
{
// p->org[j] = move[j] + crand();
p->vel[j] = 0;
p->accel[j] = 0;
}
p->vel[2] = 5;
VectorAdd (move, vec, move);
}
}
void CL_Tracker_Shell(vec3_t origin)
{
vec3_t dir;
int i;
cparticle_t *p;
for(i=0;i<300;i++)
{
if (!free_particles)
return;
p = free_particles;
free_particles = p->next;
p->next = active_particles;
active_particles = p;
VectorClear (p->accel);
p->time = cl.time;
p->alpha = 1.0;
p->alphavel = INSTANT_PARTICLE;
p->color = 0;
dir[0] = crand();
dir[1] = crand();
dir[2] = crand();
VectorNormalize(dir);
VectorMA(origin, 40, dir, p->org);
}
}
void CL_MonsterPlasma_Shell(vec3_t origin)
{
vec3_t dir;
int i;
cparticle_t *p;
for(i=0;i<40;i++)
{
if (!free_particles)
return;
p = free_particles;
free_particles = p->next;
p->next = active_particles;
active_particles = p;
VectorClear (p->accel);
p->time = cl.time;
p->alpha = 1.0;
p->alphavel = INSTANT_PARTICLE;
p->color = 0xe0;
dir[0] = crand();
dir[1] = crand();
dir[2] = crand();
VectorNormalize(dir);
VectorMA(origin, 10, dir, p->org);
// VectorMA(origin, 10*(((rand () & 0x7fff) / ((float)0x7fff))), dir, p->org);
}
}
void CL_Widowbeamout (cl_sustain_t *self)
{
vec3_t dir;
int i;
cparticle_t *p;
static int colortable[4] = {2*8,13*8,21*8,18*8};
float ratio;
ratio = 1.0 - (((float)self->endtime - (float)cl.time)/2100.0);
for(i=0;i<300;i++)
{
if (!free_particles)
return;
p = free_particles;
free_particles = p->next;
p->next = active_particles;
active_particles = p;
VectorClear (p->accel);
p->time = cl.time;
p->alpha = 1.0;
p->alphavel = INSTANT_PARTICLE;
p->color = colortable[rand()&3];
dir[0] = crand();
dir[1] = crand();
dir[2] = crand();
VectorNormalize(dir);
VectorMA(self->org, (45.0 * ratio), dir, p->org);
// VectorMA(origin, 10*(((rand () & 0x7fff) / ((float)0x7fff))), dir, p->org);
}
}
void CL_Nukeblast (cl_sustain_t *self)
{
vec3_t dir;
int i;
cparticle_t *p;
static int colortable[4] = {110, 112, 114, 116};
float ratio;
ratio = 1.0 - (((float)self->endtime - (float)cl.time)/1000.0);
for(i=0;i<700;i++)
{
if (!free_particles)
return;
p = free_particles;
free_particles = p->next;
p->next = active_particles;
active_particles = p;
VectorClear (p->accel);
p->time = cl.time;
p->alpha = 1.0;
p->alphavel = INSTANT_PARTICLE;
p->color = colortable[rand()&3];
dir[0] = crand();
dir[1] = crand();
dir[2] = crand();
VectorNormalize(dir);
VectorMA(self->org, (200.0 * ratio), dir, p->org);
// VectorMA(origin, 10*(((rand () & 0x7fff) / ((float)0x7fff))), dir, p->org);
}
}
void CL_WidowSplash (vec3_t org)
{
static int colortable[4] = {2*8,13*8,21*8,18*8};
int i;
cparticle_t *p;
vec3_t dir;
for (i=0 ; i<256 ; i++)
{
if (!free_particles)
return;
p = free_particles;
free_particles = p->next;
p->next = active_particles;
active_particles = p;
p->time = cl.time;
p->color = colortable[rand()&3];
dir[0] = crand();
dir[1] = crand();
dir[2] = crand();
VectorNormalize(dir);
VectorMA(org, 45.0, dir, p->org);
VectorMA(vec3_origin, 40.0, dir, p->vel);
p->accel[0] = p->accel[1] = 0;
p->alpha = 1.0;
p->alphavel = -0.8 / (0.5 + qfrand()*0.3);
}
}
void CL_Tracker_Explode(vec3_t origin)
{
vec3_t dir, backdir;
int i;
cparticle_t *p;
for(i=0;i<300;i++)
{
if (!free_particles)
return;
p = free_particles;
free_particles = p->next;
p->next = active_particles;
active_particles = p;
VectorClear (p->accel);
p->time = cl.time;
p->alpha = 1.0;
p->alphavel = -1.0;
p->color = 0;
dir[0] = crand();
dir[1] = crand();
dir[2] = crand();
VectorNormalize(dir);
VectorScale(dir, -1, backdir);
VectorMA(origin, 64, dir, p->org);
VectorScale(backdir, 64, p->vel);
}
}
/*
===============
CL_TagTrail
===============
*/
void CL_TagTrail (vec3_t start, vec3_t end, float color)
{
vec3_t move;
vec3_t vec;
float len;
int j;
cparticle_t *p;
int dec;
VectorCopy (start, move);
VectorSubtract (end, start, vec);
len = VectorNormalize (vec);
dec = 5;
VectorScale (vec, 5, vec);
while (len >= 0)
{
len -= dec;
if (!free_particles)
return;
p = free_particles;
free_particles = p->next;
p->next = active_particles;
active_particles = p;
VectorClear (p->accel);
p->time = cl.time;
p->alpha = 1.0;
p->alphavel = -1.0 / (0.8+qfrand()*0.2);
p->color = color;
for (j=0 ; j<3 ; j++)
{
p->org[j] = move[j] + crand()*16;
p->vel[j] = crand()*5;
p->accel[j] = 0;
}
VectorAdd (move, vec, move);
}
}
/*
===============
CL_ColorExplosionParticles
===============
*/
void CL_ColorExplosionParticles (vec3_t org, int color, int run)
{
int i, j;
cparticle_t *p;
for (i=0 ; i<128 ; i++)
{
if (!free_particles)
return;
p = free_particles;
free_particles = p->next;
p->next = active_particles;
active_particles = p;
p->time = cl.time;
p->color = color + (rand() % run);
for (j=0 ; j<3 ; j++)
{
p->org[j] = org[j] + ((rand()%32)-16);
p->vel[j] = (rand()%256)-128;
}
p->accel[0] = p->accel[1] = 0;
p->accel[2] = -PARTICLE_GRAVITY;
p->alpha = 1.0;
p->alphavel = -0.4 / (0.6 + qfrand()*0.2);
}
}
/*
===============
CL_ParticleSmokeEffect - like the steam effect, but unaffected by gravity
===============
*/
void CL_ParticleSmokeEffect (vec3_t org, vec3_t dir, int color, int count, int magnitude)
{
int i, j;
cparticle_t *p;
float d;
vec3_t r, u;
MakeNormalVectors (dir, r, u);
for (i=0 ; i<count ; i++)
{
if (!free_particles)
return;
p = free_particles;
free_particles = p->next;
p->next = active_particles;
active_particles = p;
p->time = cl.time;
p->color = color + (rand()&7);
for (j=0 ; j<3 ; j++)
{
p->org[j] = org[j] + magnitude*0.1*crand();
// p->vel[j] = dir[j]*magnitude;
}
VectorScale (dir, magnitude, p->vel);
d = crand()*magnitude/3;
VectorMA (p->vel, d, r, p->vel);
d = crand()*magnitude/3;
VectorMA (p->vel, d, u, p->vel);
p->accel[0] = p->accel[1] = p->accel[2] = 0;
p->alpha = 1.0;
p->alphavel = -1.0 / (0.5 + qfrand()*0.3);
}
}
/*
===============
CL_BlasterParticles2
Wall impact puffs (Green)
===============
*/
void CL_BlasterParticles2 (vec3_t org, vec3_t dir, unsigned int color)
{
int i, j;
cparticle_t *p;
float d;
int count;
count = 40;
for (i=0 ; i<count ; i++)
{
if (!free_particles)
return;
p = free_particles;
free_particles = p->next;
p->next = active_particles;
active_particles = p;
p->time = cl.time;
p->color = color + (rand()&7);
d = rand()&15;
for (j=0 ; j<3 ; j++)
{
p->org[j] = org[j] + ((rand()&7)-4) + d*dir[j];
p->vel[j] = dir[j] * 30 + crand()*40;
}
p->accel[0] = p->accel[1] = 0;
p->accel[2] = -PARTICLE_GRAVITY;
p->alpha = 1.0;
p->alphavel = -1.0 / (0.5 + qfrand()*0.3);
}
}
/*
===============
CL_BlasterTrail2
Green!
===============
*/
void CL_BlasterTrail2 (vec3_t start, vec3_t end)
{
vec3_t move;
vec3_t vec;
float len;
int j;
cparticle_t *p;
int dec;
VectorCopy (start, move);
VectorSubtract (end, start, vec);
len = VectorNormalize (vec);
dec = 5;
VectorScale (vec, 5, vec);
// FIXME: this is a really silly way to have a loop
while (len > 0)
{
len -= dec;
if (!free_particles)
return;
p = free_particles;
free_particles = p->next;
p->next = active_particles;
active_particles = p;
VectorClear (p->accel);
p->time = cl.time;
p->alpha = 1.0;
p->alphavel = -1.0 / (0.3+qfrand()*0.2);
p->color = 0xd0;
for (j=0 ; j<3 ; j++)
{
p->org[j] = move[j] + crand();
p->vel[j] = crand()*5;
p->accel[j] = 0;
}
VectorAdd (move, vec, move);
}
}