quakeforge/libs/video/renderer/r_part.c

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/*
r_part.c
Interface for particles
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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
static __attribute__ ((unused)) const char rcsid[] =
"$Id$";
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#include "QF/console.h"
#include "QF/cvar.h"
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#include "QF/qargs.h"
#include "QF/render.h"
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#include "compat.h"
#include "r_dynamic.h"
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#include "r_local.h"
unsigned int r_maxparticles, numparticles;
particle_t *active_particles, *free_particles, *particles, **freeparticles;
vec3_t r_pright, r_pup, r_ppn;
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void (*R_RocketTrail) (const struct entity_s *ent);
void (*R_GrenadeTrail) (const struct entity_s *ent);
void (*R_BloodTrail) (const struct entity_s *ent);
void (*R_SlightBloodTrail) (const struct entity_s *ent);
void (*R_WizTrail) (const struct entity_s *ent);
void (*R_FlameTrail) (const struct entity_s *ent);
void (*R_VoorTrail) (const struct entity_s *ent);
void (*R_GlowTrail) (const struct entity_s *ent, int glow_color);
void (*R_RunParticleEffect) (const vec3_t org, const vec3_t dir, int color, int count);
void (*R_BloodPuffEffect) (const vec3_t org, int count);
void (*R_GunshotEffect) (const vec3_t org, int count);
void (*R_LightningBloodEffect) (const vec3_t org);
void (*R_SpikeEffect) (const vec3_t org);
void (*R_KnightSpikeEffect) (const vec3_t org);
void (*R_SuperSpikeEffect) (const vec3_t org);
void (*R_WizSpikeEffect) (const vec3_t org);
void (*R_BlobExplosion) (const vec3_t org);
void (*R_ParticleExplosion) (const vec3_t org);
void (*R_ParticleExplosion2) (const vec3_t org, int colorStart, int colorLength);
void (*R_LavaSplash) (const vec3_t org);
void (*R_TeleportSplash) (const vec3_t org);
void (*R_DarkFieldParticles) (const struct entity_s *ent);
void (*R_EntityParticles) (const struct entity_s *ent);
/*
R_MaxParticlesCheck
Misty-chan: Dynamically change the maximum amount of particles on the fly.
Thanks to a LOT of help from Taniwha, Deek, Mercury, Lordhavoc, and lots of
others.
*/
void
R_MaxParticlesCheck (cvar_t *r_particles, cvar_t *r_particles_max)
{
/*
Catchall. If the user changed the setting to a number less than zero *or*
if we had a wacky cfg get past the init code check, this will make sure we
don't have problems. Also note that grabbing the var->int_val is IMPORTANT:
Prevents a segfault since if we grabbed the int_val of r_particles_max
we'd sig11 right here at startup.
*/
if (r_particles && r_particles->int_val)
r_maxparticles = r_particles_max ? r_particles_max->int_val : 0;
else
r_maxparticles = 0;
/*
Be very careful the next time we do something like this. calloc/free are
IMPORTANT and the compiler doesn't know when we do bad things with them.
*/
if (particles)
free (particles);
if (freeparticles)
free (freeparticles);
particles = 0;
freeparticles = 0;
if (r_maxparticles) {
particles = (particle_t *) calloc (r_maxparticles, sizeof (particle_t));
freeparticles = (particle_t **) calloc (r_maxparticles,
sizeof (particle_t *));
}
R_ClearParticles ();
if (r_init)
R_InitParticles ();
}