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newtree/source/r_part.c

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/*
r_part.c
(description)
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
$Id$
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <stdlib.h>
#include "console.h"
#include "host.h"
#include "qargs.h"
#include "quakefs.h"
#include "r_dynamic.h"
#include "r_local.h"
#define MAX_PARTICLES 2048 // default max # of particles at one
// time
#define ABSOLUTE_MIN_PARTICLES 512 // no fewer than this no matter
// what's
// on the command line
int ramp1[8] = { 0x6f, 0x6d, 0x6b, 0x69, 0x67, 0x65, 0x63, 0x61 };
int ramp2[8] = { 0x6f, 0x6e, 0x6d, 0x6c, 0x6b, 0x6a, 0x68, 0x66 };
int ramp3[8] = { 0x6d, 0x6b, 6, 5, 4, 3 };
particle_t *active_particles, *free_particles;
particle_t *particles;
int r_numparticles;
vec3_t r_pright, r_pup, r_ppn;
cvar_t *r_particles;
/*
===============
R_InitParticles
===============
*/
void
R_InitParticles (void)
{
int i;
i = COM_CheckParm ("-particles");
if (i) {
r_numparticles = (int) (atoi (com_argv[i + 1]));
if (r_numparticles < ABSOLUTE_MIN_PARTICLES)
r_numparticles = ABSOLUTE_MIN_PARTICLES;
} else {
r_numparticles = MAX_PARTICLES;
}
particles = (particle_t *)
Hunk_AllocName (r_numparticles * sizeof (particle_t), "particles");
}
/*
===============
R_ClearParticles
===============
*/
void
R_ClearParticles (void)
{
int i;
free_particles = &particles[0];
active_particles = NULL;
for (i = 0; i < r_numparticles; i++)
particles[i].next = &particles[i + 1];
particles[r_numparticles - 1].next = NULL;
}
void
R_ReadPointFile_f (void)
{
QFile *f;
vec3_t org;
int r;
int c;
particle_t *p;
char name[MAX_OSPATH];
// FIXME snprintf (name, sizeof (name), "maps/%s.pts", sv.name);
COM_FOpenFile (name, &f);
if (!f) {
Con_Printf ("couldn't open %s\n", name);
return;
}
Con_Printf ("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 (!free_particles) {
Con_Printf ("Not enough free particles\n");
break;
}
p = free_particles;
free_particles = p->next;
p->next = active_particles;
active_particles = p;
p->die = 99999;
p->color = (-c) & 15;
p->type = pt_static;
VectorCopy (vec3_origin, p->vel);
VectorCopy (org, p->org);
}
Qclose (f);
Con_Printf ("%i points read\n", c);
}
void
R_RunSpikeEffect (vec3_t pos, byte type)
{
switch (type) {
case TE_WIZSPIKE:
R_RunParticleEffect (pos, 20, 30);
break;
case TE_KNIGHTSPIKE:
R_RunParticleEffect (pos, 226, 20);
break;
case TE_SPIKE:
R_RunParticleEffect (pos, 0, 10);
break;
case TE_SUPERSPIKE:
R_RunParticleEffect (pos, 0, 20);
break;
}
}
void
R_RunPuffEffect (vec3_t pos, byte type, byte cnt)
{
if (!r_particles->int_val)
return;
switch (type) {
case TE_GUNSHOT:
R_RunParticleEffect (pos, 0, 20 * cnt);
break;
case TE_BLOOD:
R_RunParticleEffect (pos, 73, 20 * cnt);
break;
case TE_LIGHTNINGBLOOD:
R_RunParticleEffect (pos, 225, 50);
break;
}
}
/*
===============
R_ParticleExplosion
===============
*/
void
R_ParticleExplosion (vec3_t org)
{
int i, j;
particle_t *p;
if (!r_particles->int_val)
return;
for (i = 0; i < 1024; i++) {
if (!free_particles)
return;
p = free_particles;
free_particles = p->next;
p->next = active_particles;
active_particles = p;
p->die = cl.time + 5;
p->color = ramp1[0];
p->ramp = rand () & 3;
if (i & 1) {
p->type = pt_explode;
for (j = 0; j < 3; j++) {
p->org[j] = org[j] + ((rand () % 32) - 16);
p->vel[j] = (rand () % 512) - 256;
}
} else {
p->type = pt_explode2;
for (j = 0; j < 3; j++) {
p->org[j] = org[j] + ((rand () % 32) - 16);
p->vel[j] = (rand () % 512) - 256;
}
}
}
}
/*
===============
R_BlobExplosion
===============
*/
void
R_BlobExplosion (vec3_t org)
{
int i, j;
particle_t *p;
if (!r_particles->int_val)
return;
for (i = 0; i < 1024; i++) {
if (!free_particles)
return;
p = free_particles;
free_particles = p->next;
p->next = active_particles;
active_particles = p;
p->die = cl.time + 1 + (rand () & 8) * 0.05;
if (i & 1) {
p->type = pt_blob;
p->color = 66 + rand () % 6;
for (j = 0; j < 3; j++) {
p->org[j] = org[j] + ((rand () % 32) - 16);
p->vel[j] = (rand () % 512) - 256;
}
} else {
p->type = pt_blob2;
p->color = 150 + rand () % 6;
for (j = 0; j < 3; j++) {
p->org[j] = org[j] + ((rand () % 32) - 16);
p->vel[j] = (rand () % 512) - 256;
}
}
}
}
/*
===============
R_RunParticleEffect
===============
*/
void
R_RunParticleEffect (vec3_t org, int color, int count)
{
int i, j;
particle_t *p;
int scale;
if (!r_particles->int_val)
return;
if (count > 130)
scale = 3;
else if (count > 20)
scale = 2;
else
scale = 1;
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->die = cl.time + 0.1 * (rand () % 5);
p->color = (color & ~7) + (rand () & 7);
p->type = pt_grav;
for (j = 0; j < 3; j++) {
p->org[j] = org[j] + scale * ((rand () & 15) - 8);
p->vel[j] = vec3_origin[j]; // + (rand()%300)-150;
}
}
}
/*
===============
R_LavaSplash
===============
*/
void
R_LavaSplash (vec3_t org)
{
int i, j, k;
particle_t *p;
float vel;
vec3_t dir;
if (!r_particles->int_val)
return;
for (i = -16; i < 16; i++)
for (j = -16; j < 16; j++)
for (k = 0; k < 1; k++) {
if (!free_particles)
return;
p = free_particles;
free_particles = p->next;
p->next = active_particles;
active_particles = p;
p->die = cl.time + 2 + (rand () & 31) * 0.02;
p->color = 224 + (rand () & 7);
p->type = pt_grav;
dir[0] = j * 8 + (rand () & 7);
dir[1] = i * 8 + (rand () & 7);
dir[2] = 256;
p->org[0] = org[0] + dir[0];
p->org[1] = org[1] + dir[1];
p->org[2] = org[2] + (rand () & 63);
VectorNormalize (dir);
vel = 50 + (rand () & 63);
VectorScale (dir, vel, p->vel);
}
}
/*
===============
R_TeleportSplash
===============
*/
void
R_TeleportSplash (vec3_t org)
{
int i, j, k;
particle_t *p;
float vel;
vec3_t dir;
if (!r_particles->int_val)
return;
for (i = -16; i < 16; i += 4)
for (j = -16; j < 16; j += 4)
for (k = -24; k < 32; k += 4) {
if (!free_particles)
return;
p = free_particles;
free_particles = p->next;
p->next = active_particles;
active_particles = p;
p->die = cl.time + 0.2 + (rand () & 7) * 0.02;
p->color = 7 + (rand () & 7);
p->type = pt_grav;
dir[0] = j * 8;
dir[1] = i * 8;
dir[2] = k * 8;
p->org[0] = org[0] + i + (rand () & 3);
p->org[1] = org[1] + j + (rand () & 3);
p->org[2] = org[2] + k + (rand () & 3);
VectorNormalize (dir);
vel = 50 + (rand () & 63);
VectorScale (dir, vel, p->vel);
}
}
void
R_RocketTrail (int type, entity_t *ent)
{
vec3_t vec;
float len;
int j;
particle_t *p;
if (!r_particles->int_val)
return;
VectorSubtract (ent->origin, ent->old_origin, vec);
len = VectorNormalize (vec);
while (len > 0) {
len -= 3;
if (!free_particles)
return;
p = free_particles;
free_particles = p->next;
p->next = active_particles;
active_particles = p;
VectorCopy (vec3_origin, p->vel);
p->die = cl.time + 2;
if (type == 4) { // slight blood
p->type = pt_slowgrav;
p->color = 67 + (rand () & 3);
for (j = 0; j < 3; j++)
p->org[j] = ent->old_origin[j] + ((rand () % 6) - 3);
len -= 3;
} else if (type == 2) { // blood
p->type = pt_slowgrav;
p->color = 67 + (rand () & 3);
for (j = 0; j < 3; j++)
p->org[j] = ent->old_origin[j] + ((rand () % 6) - 3);
} else if (type == 6) { // voor trail
p->color = 9 * 16 + 8 + (rand () & 3);
p->type = pt_static;
p->die = cl.time + 0.3;
for (j = 0; j < 3; j++)
p->org[j] = ent->old_origin[j] + ((rand () & 15) - 8);
} else if (type == 1) { // smoke smoke
p->ramp = (rand () & 3) + 2;
p->color = ramp3[(int) p->ramp];
p->type = pt_fire;
for (j = 0; j < 3; j++)
p->org[j] = ent->old_origin[j] + ((rand () % 6) - 3);
} else if (type == 0) { // rocket trail
p->ramp = (rand () & 3);
p->color = ramp3[(int) p->ramp];
p->type = pt_fire;
for (j = 0; j < 3; j++)
p->org[j] = ent->old_origin[j] + ((rand () % 6) - 3);
} else if (type == 3 || type == 5) { // tracer
static int tracercount;
p->die = cl.time + 0.5;
p->type = pt_static;
if (type == 3)
p->color = 52 + ((tracercount & 4) << 1);
else
p->color = 230 + ((tracercount & 4) << 1);
tracercount++;
VectorCopy (ent->old_origin, p->org);
if (tracercount & 1) {
p->vel[0] = 30 * vec[1];
p->vel[1] = 30 * -vec[0];
} else {
p->vel[0] = 30 * -vec[1];
p->vel[1] = 30 * vec[0];
}
}
VectorAdd (ent->old_origin, vec, ent->old_origin);
}
}
/*
===============
R_DrawParticles
===============
*/
void
R_DrawParticles (void)
{
particle_t *p, **particle;
float grav;
int i;
float time2, time3;
float time1;
float dvel;
float frametime;
D_StartParticles ();
VectorScale (vright, xscaleshrink, r_pright);
VectorScale (vup, yscaleshrink, r_pup);
VectorCopy (vpn, r_ppn);
frametime = host_frametime;
time3 = frametime * 15;
time2 = frametime * 10; // 15;
time1 = frametime * 5;
grav = frametime * 800 * 0.05;
dvel = 4 * frametime;
for (particle = &active_particles; *particle;) {
if ((*particle)->die < cl.time) {
p = (*particle)->next;
(*particle)->next = free_particles;
free_particles = (*particle);
(*particle) = p;
} else {
p = *particle;
particle = &(*particle)->next;
D_DrawParticle (p);
p->org[0] += p->vel[0] * frametime;
p->org[1] += p->vel[1] * frametime;
p->org[2] += p->vel[2] * frametime;
switch (p->type) {
case pt_static:
break;
case pt_fire:
p->ramp += time1;
if (p->ramp >= 6)
p->die = -1;
else
p->color = ramp3[(int) p->ramp];
p->vel[2] += grav;
break;
case pt_explode:
p->ramp += time2;
if (p->ramp >= 8)
p->die = -1;
else
p->color = ramp1[(int) p->ramp];
for (i = 0; i < 3; i++)
p->vel[i] += p->vel[i] * dvel;
p->vel[2] -= grav;
break;
case pt_explode2:
p->ramp += time3;
if (p->ramp >= 8)
p->die = -1;
else
p->color = ramp2[(int) p->ramp];
for (i = 0; i < 3; i++)
p->vel[i] -= p->vel[i] * frametime;
p->vel[2] -= grav;
break;
case pt_blob:
for (i = 0; i < 3; i++)
p->vel[i] += p->vel[i] * dvel;
p->vel[2] -= grav;
break;
case pt_blob2:
for (i = 0; i < 2; i++)
p->vel[i] -= p->vel[i] * dvel;
p->vel[2] -= grav;
break;
case pt_slowgrav:
case pt_grav:
p->vel[2] -= grav;
break;
}
}
}
D_EndParticles ();
}
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