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quakeforge/libs/video/renderer/sw/sw_rpart.c

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/*
sw_rpart.c
Software renderer particle effects code.
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__ ((used)) const char rcsid[] =
"$Id$";
#include <stdlib.h>
#include "QF/cvar.h"
#include "QF/qargs.h"
#include "QF/quakefs.h"
#include "QF/render.h"
#include "QF/sys.h"
#include "compat.h"
#include "r_cvar.h"
#include "r_dynamic.h"
#include "r_local.h"
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 };
void
R_InitParticles (void)
{
}
void
R_ClearParticles (void)
{
unsigned int i;
free_particles = &particles[0];
active_particles = NULL;
for (i = 0; i < r_maxparticles; i++)
particles[i].next = &particles[i + 1];
if (r_maxparticles)
particles[r_maxparticles - 1].next = NULL;
}
void
R_ReadPointFile_f (void)
{
QFile *f;
vec3_t org;
int c, r;
particle_t *p;
char name[MAX_OSPATH];
// FIXME snprintf (name, sizeof (name), "maps/%s.pts", sv.name);
QFS_FOpenFile (name, &f);
if (!f) {
Sys_Printf ("couldn't open %s\n", name);
return;
}
Sys_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) {
Sys_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;
VectorZero (p->vel);
VectorCopy (org, p->org);
}
Qclose (f);
Sys_Printf ("%i points read\n", c);
}
static void
R_ParticleExplosion_QF (const 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 = r_realtime + 5;
p->color = ramp1[0];
p->ramp = rand () & 3;
if (i & 1)
p->type = pt_explode;
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;
}
}
}
static void
R_ParticleExplosion2_QF (const vec3_t org, int colorStart, int colorLength)
{
int i, j;
int colorMod = 0;
particle_t *p;
for (i=0; i<512; i++) {
if (!free_particles)
return;
p = free_particles;
free_particles = p->next;
p->next = active_particles;
active_particles = p;
p->die = r_realtime + 0.3;
p->color = colorStart + (colorMod % colorLength);
colorMod++;
p->type = pt_blob;
for (j=0 ; j<3 ; j++) {
p->org[j] = org[j] + ((rand()%32)-16);
p->vel[j] = (rand()%512)-256;
}
}
}
static void
R_BlobExplosion_QF (const 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 = r_realtime + 1 + (rand () & 8) * 0.05;
if (i & 1) {
p->type = pt_blob;
p->color = 66 + rand () % 6;
} 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;
}
}
}
static void
R_RunParticleEffect_QF (const vec3_t org, const vec3_t dir, int color,
int count)
{
int i, j;
particle_t *p;
if (!r_particles->int_val)
return;
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 = r_realtime + 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] + ((rand () & 15) - 8);
p->vel[j] = dir[j]; // + (rand()%300)-150;
}
}
}
static void
R_SpikeEffect_QF (const vec3_t org)
{
R_RunParticleEffect_QF (org, vec3_origin, 0, 10);
}
static void
R_SuperSpikeEffect_QF (const vec3_t org)
{
R_RunParticleEffect (org, vec3_origin, 0, 20);
}
static void
R_KnightSpikeEffect_QF (const vec3_t org)
{
R_RunParticleEffect_QF (org, vec3_origin, 226, 20);
}
static void
R_WizSpikeEffect_QF (const vec3_t org)
{
R_RunParticleEffect_QF (org, vec3_origin, 20, 30);
}
static void
R_BloodPuffEffect_QF (const vec3_t org, int count)
{
R_RunParticleEffect_QF (org, vec3_origin, 73, count);
}
static void
R_GunshotEffect_QF (const vec3_t org, int count)
{
R_RunParticleEffect_QF (org, vec3_origin, 0, count);
}
static void
R_LightningBloodEffect_QF (const vec3_t org)
{
R_RunParticleEffect_QF (org, vec3_origin, 225, 50);
}
static void
R_LavaSplash_QF (const 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 = r_realtime + 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);
}
}
static void
R_TeleportSplash_QF (const 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 = r_realtime + 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);
}
}
static void
R_DarkFieldParticles_ID (const entity_t *ent)
{
int i, j, k;
unsigned int rnd;
float vel;
particle_t *p;
vec3_t dir, org;
if (!r_particles->int_val)
return;
org[0] = ent->origin[0];
org[1] = ent->origin[1];
org[2] = ent->origin[2];
for (i = -16; i < 16; i += 8) {
for (j = -16; j < 16; j += 8) {
for (k = 0; k < 32; k += 8) {
if (!free_particles)
return;
p = free_particles;
free_particles = p->next;
p->next = active_particles;
active_particles = p;
rnd = rand ();
p->die = r_realtime + 0.2 + (rnd & 7) * 0.02;
p->color = 150 + rand () % 6;
p->type = pt_slowgrav;
dir[0] = j * 8;
dir[1] = i * 8;
dir[2] = k * 8;
p->org[0] = org[0] + i + ((rnd >> 3) & 3);
p->org[1] = org[1] + j + ((rnd >> 5) & 3);
p->org[2] = org[2] + k + ((rnd >> 7) & 3);
VectorNormalize (dir);
vel = 50 + ((rnd >> 9) & 63);
VectorScale (dir, vel, p->vel);
}
}
}
}
static vec3_t avelocities[NUMVERTEXNORMALS];
static void
R_EntityParticles_ID (const entity_t *ent)
{
int i;
float angle, sp, sy, cp, cy; // cr, sr
float beamlength = 16.0, dist = 64.0;
particle_t *p;
vec3_t forward;
if (!r_particles->int_val)
return;
if (!avelocities[0][0]) {
for (i = 0; i < NUMVERTEXNORMALS * 3; i++)
avelocities[0][i] = (rand () & 255) * 0.01;
}
for (i = 0; i < NUMVERTEXNORMALS; i++) {
angle = r_realtime * avelocities[i][0];
cy = cos (angle);
sy = sin (angle);
angle = r_realtime * avelocities[i][1];
cp = cos (angle);
sp = sin (angle);
// Next 3 lines results aren't currently used, may be in future. --Despair
// angle = r_realtime * avelocities[i][2];
// sr = sin (angle);
// cr = cos (angle);
forward[0] = cp * cy;
forward[1] = cp * sy;
forward[2] = -sp;
if (!free_particles)
return;
p = free_particles;
free_particles = p->next;
p->next = active_particles;
active_particles = p;
p->die = r_realtime + 0.01;
p->color = 0x6f;
p->type = pt_explode;
p->org[0] = ent->origin[0] + r_avertexnormals[i][0] * dist +
forward[0] * beamlength;
p->org[1] = ent->origin[1] + r_avertexnormals[i][1] * dist +
forward[1] * beamlength;
p->org[2] = ent->origin[2] + r_avertexnormals[i][2] * dist +
forward[2] * beamlength;
}
}
static void
R_RocketTrail_QF (const entity_t *ent)
{
float len;
int j;
particle_t *p;
vec3_t old_origin, vec;
if (!r_particles->int_val)
return;
VectorCopy (ent->old_origin, old_origin);
VectorSubtract (ent->origin, 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;
VectorZero (p->vel);
p->die = r_realtime + 2;
p->ramp = (rand () & 3);
p->color = ramp3[(int) p->ramp];
p->type = pt_fire;
for (j = 0; j < 3; j++)
p->org[j] = old_origin[j] + ((rand () % 6) - 3);
VectorAdd (old_origin, vec, old_origin);
}
}
static void
R_GrenadeTrail_QF (const entity_t *ent)
{
float len;
int j;
particle_t *p;
vec3_t old_origin, vec;
if (!r_particles->int_val)
return;
VectorCopy (ent->old_origin, old_origin);
VectorSubtract (ent->origin, 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;
VectorZero (p->vel);
p->die = r_realtime + 2;
p->ramp = (rand () & 3) + 2;
p->color = ramp3[(int) p->ramp];
p->type = pt_fire;
for (j = 0; j < 3; j++)
p->org[j] = old_origin[j] + ((rand () % 6) - 3);
VectorAdd (old_origin, vec, old_origin);
}
}
static void
R_BloodTrail_QF (const entity_t *ent)
{
float len;
int j;
particle_t *p;
vec3_t old_origin, vec;
if (!r_particles->int_val)
return;
VectorCopy (ent->old_origin, old_origin);
VectorSubtract (ent->origin, 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;
VectorZero (p->vel);
p->die = r_realtime + 2;
p->type = pt_slowgrav;
p->color = 67 + (rand () & 3);
for (j = 0; j < 3; j++)
p->org[j] = old_origin[j] + ((rand () % 6) - 3);
break;
VectorAdd (old_origin, vec, old_origin);
}
}
static void
R_SlightBloodTrail_QF (const entity_t *ent)
{
float len;
int j;
particle_t *p;
vec3_t old_origin, vec;
if (!r_particles->int_val)
return;
VectorCopy (ent->old_origin, old_origin);
VectorSubtract (ent->origin, old_origin, vec);
len = VectorNormalize (vec);
while (len > 0) {
len -= 6;
if (!free_particles)
return;
p = free_particles;
free_particles = p->next;
p->next = active_particles;
active_particles = p;
VectorZero (p->vel);
p->die = r_realtime + 2;
p->type = pt_slowgrav;
p->color = 67 + (rand () & 3);
for (j = 0; j < 3; j++)
p->org[j] = old_origin[j] + ((rand () % 6) - 3);
VectorAdd (old_origin, vec, old_origin);
}
}
static void
R_WizTrail_QF (const entity_t *ent)
{
float len;
particle_t *p;
vec3_t old_origin, vec;
if (!r_particles->int_val)
return;
VectorCopy (ent->old_origin, old_origin);
VectorSubtract (ent->origin, old_origin, vec);
len = VectorNormalize (vec);
while (len > 0) {
static int tracercount;
len -= 3;
if (!free_particles)
return;
p = free_particles;
free_particles = p->next;
p->next = active_particles;
active_particles = p;
p->die = r_realtime + 0.5;
p->type = pt_static;
p->color = 52 + ((tracercount & 4) << 1);
tracercount++;
VectorCopy (old_origin, p->org);
if (tracercount & 1) {
p->vel[0] = 30.0 * vec[1];
p->vel[1] = 30.0 * -vec[0];
} else {
p->vel[0] = 30.0 * -vec[1];
p->vel[1] = 30.0 * vec[0];
}
p->vel[2] = 0.0;
VectorAdd (old_origin, vec, old_origin);
}
}
static void
R_FlameTrail_QF (const entity_t *ent)
{
float len;
particle_t *p;
vec3_t old_origin, vec;
if (!r_particles->int_val)
return;
VectorCopy (ent->old_origin, old_origin);
VectorSubtract (ent->origin, old_origin, vec);
len = VectorNormalize (vec);
while (len > 0) {
static int tracercount;
len -= 3;
if (!free_particles)
return;
p = free_particles;
free_particles = p->next;
p->next = active_particles;
active_particles = p;
p->die = r_realtime + 0.5;
p->type = pt_static;
p->color = 230 + ((tracercount & 4) << 1);
tracercount++;
VectorCopy (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];
}
p->vel[2] = 0.0;
VectorAdd (old_origin, vec, old_origin);
}
}
static void
R_VoorTrail_QF (const entity_t *ent)
{
float len;
int j;
particle_t *p;
vec3_t old_origin, vec;
if (!r_particles->int_val)
return;
VectorCopy (ent->old_origin, old_origin);
VectorSubtract (ent->origin, 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;
VectorZero (p->vel);
p->die = r_realtime + 0.3;
p->type = pt_static;
p->color = 9 * 16 + 8 + (rand () & 3);
for (j = 0; j < 3; j++)
p->org[j] = old_origin[j] + ((rand () & 15) - 8);
VectorAdd (old_origin, vec, old_origin);
}
}
void
R_DrawParticles (void)
{
int i;
float dvel, frametime, grav, time1, time2, time3;
particle_t *p, **particle;
D_StartParticles ();
VectorScale (vright, xscaleshrink, r_pright);
VectorScale (vup, yscaleshrink, r_pup);
VectorCopy (vpn, r_ppn);
frametime = r_frametime;
time3 = frametime * 15;
time2 = frametime * 10; // 15;
time1 = frametime * 5;
grav = frametime * r_gravity * 0.05;
dvel = 4 * frametime;
for (particle = &active_particles; *particle;) {
if ((*particle)->die < r_realtime) {
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;
default:
Sys_DPrintf ("unhandled particle type %d\n", p->type);
break;
}
}
}
D_EndParticles ();
}
void
r_easter_eggs_f (cvar_t *var)
{
}
void
r_particles_style_f (cvar_t *var)
{
}
static void
R_ParticleFunctionInit (void)
{
R_BlobExplosion = R_BlobExplosion_QF;
R_ParticleExplosion = R_ParticleExplosion_QF;
R_ParticleExplosion2 = R_ParticleExplosion2_QF;
R_LavaSplash = R_LavaSplash_QF;
R_TeleportSplash = R_TeleportSplash_QF;
R_DarkFieldParticles = R_DarkFieldParticles_ID;
R_EntityParticles = R_EntityParticles_ID;
R_BloodPuffEffect = R_BloodPuffEffect_QF;
R_GunshotEffect = R_GunshotEffect_QF;
R_LightningBloodEffect = R_LightningBloodEffect_QF;
R_RunParticleEffect = R_RunParticleEffect_QF;
R_SpikeEffect = R_SpikeEffect_QF;
R_SuperSpikeEffect = R_SuperSpikeEffect_QF;
R_KnightSpikeEffect = R_KnightSpikeEffect_QF;
R_WizSpikeEffect = R_WizSpikeEffect_QF;
R_RocketTrail = R_RocketTrail_QF;
R_GrenadeTrail = R_GrenadeTrail_QF;
R_BloodTrail = R_BloodTrail_QF;
R_SlightBloodTrail = R_SlightBloodTrail_QF;
R_WizTrail = R_WizTrail_QF;
R_FlameTrail = R_FlameTrail_QF;
R_VoorTrail = R_VoorTrail_QF;
}
void
R_Particles_Init_Cvars (void)
{
R_ParticleFunctionInit ();
}
VISIBLE void
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)
{
particle_t *p;
if (!free_particles)
return;
p = free_particles;
free_particles = p->next;
p->next = active_particles;
active_particles = p;
VectorCopy (org, p->org);
p->color = color;
p->tex = texnum;
p->scale = scale;
p->alpha = alpha;
VectorCopy (vel, p->vel);
p->type = type;
p->die = die;
p->ramp = ramp;
}
VISIBLE void
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)
{
float o_fuzz = org_fuzz, v_fuzz = vel_fuzz;
int rnd;
vec3_t porg, pvel;
rnd = rand ();
porg[0] = o_fuzz * ((rnd & 63) - 31.5) / 63.0 + org[0];
porg[1] = o_fuzz * (((rnd >> 5) & 63) - 31.5) / 63.0 + org[1];
porg[2] = o_fuzz * (((rnd >> 10) & 63) - 31.5) / 63.0 + org[2];
rnd = rand ();
pvel[0] = v_fuzz * ((rnd & 63) - 31.5) / 63.0;
pvel[1] = v_fuzz * (((rnd >> 5) & 63) - 31.5) / 63.0;
pvel[2] = v_fuzz * (((rnd >> 10) & 63) - 31.5) / 63.0;
R_Particle_New (type, texnum, porg, scale, pvel, die, color, alpha, ramp);
}
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