mirror of
https://git.code.sf.net/p/quake/quakeforge
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796 lines
18 KiB
C
796 lines
18 KiB
C
/*
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gl_dyn_part.c
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OpenGL particle system.
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Copyright (C) 1996-1997 Id Software, Inc.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to:
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Free Software Foundation, Inc.
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59 Temple Place - Suite 330
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Boston, MA 02111-1307, USA
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*/
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static const char rcsid[] =
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"$Id$";
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#ifdef HAVE_STRING_H
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# include <string.h>
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#endif
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#ifdef HAVE_STRINGS_H
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# include <strings.h>
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#endif
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#include <stdlib.h>
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#include "QF/cmd.h"
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#include "QF/console.h"
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#include "QF/cvar.h"
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#include "QF/qargs.h"
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#include "QF/render.h"
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#include "QF/sys.h"
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#include "QF/vfs.h"
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#include "QF/GL/defines.h"
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#include "QF/GL/funcs.h"
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#include "QF/GL/qf_explosions.h"
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#include "QF/GL/qf_textures.h"
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#include "compat.h"
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#include "r_cvar.h"
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#include "r_dynamic.h"
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#include "r_shared.h"
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#include "varrays.h"
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int ramp[8] = { 0x6f, 0x6d, 0x6b, 0x69, 0x67, 0x65, 0x63, 0x61 };
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inline particle_t *
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particle_new (ptype_t type, int texnum, vec3_t org, float scale, vec3_t vel,
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float die, byte color, byte alpha)
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{
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particle_t *part;
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/*
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if (numparticles >= r_maxparticles) {
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Sys_Error ("FAILED PARTICLE ALLOC!\n");
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return NULL;
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}
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*/
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part = &particles[numparticles++];
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part->type = type;
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VectorCopy (org, part->org);
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VectorCopy (vel, part->vel);
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part->die = die;
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part->color = color;
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part->alpha = alpha;
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part->tex = texnum;
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part->scale = scale;
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return part;
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}
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inline particle_t *
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particle_new_random (ptype_t type, int texnum, vec3_t org, int org_fuzz,
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float scale, int vel_fuzz, float die, byte color,
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byte alpha)
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{
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int j;
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vec3_t porg, pvel;
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for (j = 0; j < 3; j++) {
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if (org_fuzz)
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porg[j] = qfrandom (org_fuzz * 2) - org_fuzz + org[j];
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if (vel_fuzz)
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pvel[j] = qfrandom (vel_fuzz * 2) - vel_fuzz;
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}
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return particle_new (type, texnum, porg, scale, pvel, die, color, alpha);
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}
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void
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R_Particles_Init_Cvars (void)
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{
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}
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inline void
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R_ClearParticles (void)
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{
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numparticles = 0;
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}
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void
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R_ReadPointFile_f (void)
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{
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char name[MAX_OSPATH], *mapname, *t1;
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int c, r;
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vec3_t org;
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VFile *f;
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mapname = strdup (r_worldentity.model->name);
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if (!mapname)
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Sys_Error ("Can't duplicate mapname!");
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t1 = strrchr (mapname, '.');
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if (!t1)
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Sys_Error ("Can't find .!");
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t1[0] = '\0';
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snprintf (name, sizeof (name), "%s.pts", mapname);
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free (mapname);
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COM_FOpenFile (name, &f);
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if (!f) {
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Con_Printf ("couldn't open %s\n", name);
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return;
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}
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Con_Printf ("Reading %s...\n", name);
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c = 0;
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for (;;) {
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char buf[64];
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Qgets (f, buf, sizeof (buf));
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r = sscanf (buf, "%f %f %f\n", &org[0], &org[1], &org[2]);
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if (r != 3)
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break;
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c++;
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if (numparticles >= r_maxparticles) {
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Con_Printf ("Not enough free particles\n");
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break;
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} else {
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particle_new (pt_static, part_tex_dot, org, 1.5, vec3_origin,
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99999, (-c) & 15, 255);
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}
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}
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Qclose (f);
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Con_Printf ("%i points read\n", c);
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}
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void
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R_ParticleExplosion (vec3_t org)
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{
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if (numparticles >= r_maxparticles)
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return;
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/*
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R_NewExplosion (org);
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*/
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particle_new_random (pt_smokecloud, part_tex_smoke, org, 4,
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30, 8, r_realtime + 5, (rand () & 7) + 8,
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128 + (rand () & 63));
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}
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void
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R_ParticleExplosion2 (vec3_t org, int colorStart, int colorLength)
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{
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int i;
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int colorMod = 0, j = 512;
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if (numparticles >= r_maxparticles)
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return;
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else if (numparticles + j >= r_maxparticles)
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j = r_maxparticles - numparticles;
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for (i = 0; i < j; i++) {
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particle_new_random (pt_blob, part_tex_dot, org, 16, 2, 256,
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(r_realtime + 0.3),
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(colorStart + (colorMod % colorLength)), 255);
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colorMod++;
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}
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}
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void
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R_BlobExplosion (vec3_t org)
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{
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int i;
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int j = 1024;
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if (numparticles >= r_maxparticles)
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return;
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else if (numparticles + j >= r_maxparticles)
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j = r_maxparticles - numparticles;
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for (i = 0; i < j / 2; i++) {
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particle_new_random (pt_blob, part_tex_dot, org, 12, 2, 256,
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(r_realtime + 1 + (rand () & 7) * 0.05),
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(66 + rand () % 6), 255);
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}
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for (i = 0; i < j / 2; i++) {
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particle_new_random (pt_blob2, part_tex_dot, org, 12, 2, 256,
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(r_realtime + 1 + (rand () & 7) * 0.05),
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(150 + rand () % 6), 255);
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}
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}
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static void
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R_RunSparkEffect (vec3_t org, int count, int ofuzz)
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{
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int j = count + 1;
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if (numparticles >= r_maxparticles)
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return;
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else if (numparticles + j >= r_maxparticles)
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j = r_maxparticles - numparticles;
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count = j - 1;
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particle_new (pt_smokecloud, part_tex_smoke, org,
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ofuzz * 0.08, vec3_origin, r_realtime + 9,
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12 + (rand () & 3), 64 + (rand () & 31));
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while (count--)
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particle_new_random (pt_fallfadespark, part_tex_spark, org,
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ofuzz * 0.75, 1, 96, r_realtime + 5,
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ramp[rand () & 7], 255);
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}
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inline static void
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R_BloodPuff (vec3_t org, int count)
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{
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if (numparticles >= r_maxparticles)
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return;
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particle_new (pt_bloodcloud, part_tex_smoke, org, count / 5,
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vec3_origin, r_realtime + 99, 70 + (rand () & 3), 128);
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}
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void
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R_RunPuffEffect (vec3_t org, particle_effect_t type, byte count)
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{
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// FIXME: Is this test worthwhile?
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if (numparticles >= r_maxparticles)
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return;
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switch (type) {
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case PE_GUNSHOT:
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{
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int scale = 16;
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if (count > 120)
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scale = 24;
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R_RunSparkEffect (org, count / 2, scale);
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}
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break;
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case PE_BLOOD:
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R_BloodPuff (org, count);
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break;
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case PE_LIGHTNINGBLOOD:
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R_BloodPuff (org, 50);
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if (numparticles >= r_maxparticles)
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break;
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particle_new (pt_smokecloud, part_tex_smoke, org,
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3, vec3_origin, r_realtime + 9,
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12 + (rand () & 3), 64 + (rand () & 31));
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count = 7;
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if (numparticles + count >= r_maxparticles)
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count = r_maxparticles - numparticles;
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while (count--)
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particle_new_random (pt_fallfadespark, part_tex_spark, org,
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12, 2, 128, r_realtime + 5,
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244 + (rand () % 3), 255);
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break;
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default:
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break;
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}
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}
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void
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R_RunParticleEffect (vec3_t org, vec3_t dir, int color, int count)
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{
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int i, j;
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if (numparticles >= r_maxparticles)
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return;
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if (numparticles + count >= r_maxparticles)
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count = r_maxparticles - numparticles;
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for (i = 0; i < count; i++) {
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for (j = 0; j < 3; j++) {
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org[j] += ((rand () & 15) - 8);
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}
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particle_new (pt_slowgrav, part_tex_dot, org, 1.5, dir,
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(r_realtime + 0.1 * (rand () % 5)),
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(color & ~7) + (rand () & 7), 255);
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}
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}
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void
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R_RunSpikeEffect (vec3_t org, particle_effect_t type)
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{
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switch (type) {
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case PE_SPIKE:
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R_RunSparkEffect (org, 5, 8);
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break;
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case PE_SUPERSPIKE:
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R_RunSparkEffect (org, 10, 8);
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break;
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case PE_KNIGHTSPIKE:
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R_RunSparkEffect (org, 10, 8);
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break;
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case PE_WIZSPIKE:
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R_RunSparkEffect (org, 15, 16);
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break;
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default:
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break;
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}
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}
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void
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R_LavaSplash (vec3_t org)
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{
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float vel;
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int i, j;
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int k = 256;
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vec3_t dir, porg, pvel;
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if (numparticles + k >= r_maxparticles) {
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return;
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} // else if (numparticles + k >= r_maxparticles) {
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// k = r_maxparticles - numparticles;
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// }
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dir[2] = 256;
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for (i = -128; i < 128; i += 16) {
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for (j = -128; j < 128; j += 16) {
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dir[0] = j + (rand () & 7);
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dir[1] = i + (rand () & 7);
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porg[0] = org[0] + dir[0];
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porg[1] = org[1] + dir[1];
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porg[2] = org[2] + (rand () & 63);
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VectorNormalize (dir);
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vel = 50 + (rand () & 63);
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VectorScale (dir, vel, pvel);
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particle_new (pt_grav, part_tex_dot, porg, 3, pvel,
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(r_realtime + 2 + (rand () & 31) * 0.02),
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(224 + (rand () & 7)), 193);
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}
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}
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}
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void
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R_TeleportSplash (vec3_t org)
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{
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float vel;
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int i, j, k;
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int l = 896;
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vec3_t dir, porg, pvel;
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if (numparticles + l >= r_maxparticles) {
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return;
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} // else if (numparticles + l >= r_maxparticles) {
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// l = r_maxparticles - numparticles;
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// }
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for (i = -16; i < 16; i += 4) {
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dir[1] = i * 8;
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for (j = -16; j < 16; j += 4) {
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dir[0] = j * 8;
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for (k = -24; k < 32; k += 4) {
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dir[2] = k * 8;
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porg[0] = org[0] + i + (rand () & 3);
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porg[1] = org[1] + j + (rand () & 3);
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porg[2] = org[2] + k + (rand () & 3);
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VectorNormalize (dir);
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vel = 50 + (rand () & 63);
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VectorScale (dir, vel, pvel);
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particle_new (pt_grav, part_tex_spark, porg, 0.6, pvel,
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(r_realtime + 0.2 + (rand () & 15) * 0.01),
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(7 + (rand () & 7)), 255);
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}
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}
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}
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}
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void
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R_RocketTrail (entity_t *ent)
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{
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float dist, len, pscale, pscalenext;
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vec3_t subtract, vec;
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if (numparticles >= r_maxparticles)
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return;
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R_AddFire (ent->old_origin, ent->origin, ent);
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VectorSubtract (ent->origin, ent->old_origin, vec);
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len = VectorNormalize (vec);
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pscale = 1.5 + qfrandom (1.5);
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while (len > 0) {
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if (numparticles >= r_maxparticles)
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break;
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pscalenext = 1.5 + qfrandom (1.5);
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dist = (pscale + pscalenext) * 3.0;
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VectorScale (vec, min(dist, len), subtract);
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VectorAdd (ent->old_origin, subtract, ent->old_origin);
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len -= dist;
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// Misty-chan's Easter Egg: change color to (rand () & 255)
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particle_new (pt_smoke, part_tex_smoke, ent->old_origin,
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pscale, vec3_origin, r_realtime + 2.0,
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12 + (rand () & 3), 128 + (rand () & 31));
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pscale = pscalenext;
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}
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}
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void
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R_GrenadeTrail (entity_t *ent)
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{
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float dist, len, pscale, pscalenext;
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vec3_t subtract, vec;
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if (numparticles >= r_maxparticles)
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return;
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VectorSubtract (ent->origin, ent->old_origin, vec);
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len = VectorNormalize (vec);
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pscale = 6.0 + qfrandom (7.0);
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while (len > 0) {
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if (numparticles >= r_maxparticles)
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break;
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pscalenext = 6.0 + qfrandom (7.0);
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dist = (pscale + pscalenext) * 2.0;
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VectorScale (vec, min(dist, len), subtract);
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VectorAdd (ent->old_origin, subtract, ent->old_origin);
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len -= dist;
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// Misty-chan's Easter Egg: change color to (rand () & 255)
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particle_new (pt_smoke, part_tex_smoke, ent->old_origin,
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pscale, vec3_origin, r_realtime + 2.0, (rand () & 3),
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128 + (rand () & 31));
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pscale = pscalenext;
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}
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}
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void
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R_BloodTrail (entity_t *ent)
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{
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float dist, len, pscale, pscalenext;
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int j;
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vec3_t subtract, vec, porg, pvel;
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if (numparticles >= r_maxparticles)
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return;
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VectorSubtract (ent->origin, ent->old_origin, vec);
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len = VectorNormalize (vec);
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pscale = 5.0 + qfrandom (10.0);
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while (len > 0) {
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if (numparticles >= r_maxparticles)
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break;
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VectorCopy (vec3_origin, pvel);
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VectorCopy (ent->old_origin, porg);
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pscalenext = 5.0 + qfrandom (10.0);
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dist = (pscale + pscalenext) * 1.5;
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for (j = 0; j < 3; j++) {
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pvel[j] = (qfrandom (24.0) - 12.0);
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porg[j] = ent->old_origin[j] + qfrandom (3.0) - 1.5;
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}
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VectorScale (vec, min(dist, len), subtract);
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VectorAdd (ent->old_origin, subtract, ent->old_origin);
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len -= dist;
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particle_new (pt_grav, part_tex_smoke, porg, pscale, pvel,
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r_realtime + 2.0, 68 + (rand () & 3), 255);
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pscale = pscalenext;
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}
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}
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void
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R_SlightBloodTrail (entity_t *ent)
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{
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float dist, len, pscale, pscalenext;
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int j;
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vec3_t subtract, vec, porg, pvel;
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if (numparticles >= r_maxparticles)
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return;
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VectorSubtract (ent->origin, ent->old_origin, vec);
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len = VectorNormalize (vec);
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pscale = 1.5 + qfrandom (7.5);
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while (len > 0) {
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if (numparticles >= r_maxparticles)
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break;
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VectorCopy (vec3_origin, pvel);
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VectorCopy (ent->old_origin, porg);
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pscalenext = 1.5 + qfrandom (7.5);
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dist = (pscale + pscalenext) * 1.5;
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|
|
for (j = 0; j < 3; j++) {
|
|
pvel[j] = (qfrandom (12.0) - 6.0);
|
|
porg[j] = ent->old_origin[j] + qfrandom (3.0) - 1.5;
|
|
}
|
|
|
|
VectorScale (vec, min(dist, len), subtract);
|
|
VectorAdd (ent->old_origin, subtract, ent->old_origin);
|
|
len -= dist;
|
|
|
|
particle_new (pt_grav, part_tex_smoke, porg, pscale, pvel,
|
|
r_realtime + 1.5, 68 + (rand () & 3), 192);
|
|
pscale = pscalenext;
|
|
}
|
|
}
|
|
|
|
void
|
|
R_GreenTrail (entity_t *ent)
|
|
{
|
|
float dist, len;
|
|
static int tracercount;
|
|
vec3_t subtract, vec, pvel;
|
|
|
|
if (numparticles >= r_maxparticles)
|
|
return;
|
|
|
|
VectorSubtract (ent->origin, ent->old_origin, vec);
|
|
len = VectorNormalize (vec);
|
|
dist = 3.0;
|
|
|
|
while (len > 0) {
|
|
if (numparticles >= r_maxparticles)
|
|
break;
|
|
|
|
VectorCopy (vec3_origin, pvel);
|
|
tracercount++;
|
|
if (tracercount & 1) {
|
|
pvel[0] = 30 * vec[1];
|
|
pvel[1] = 30 * -vec[0];
|
|
} else {
|
|
pvel[0] = 30 * -vec[1];
|
|
pvel[1] = 30 * vec[0];
|
|
}
|
|
|
|
VectorScale (vec, min(dist, len), subtract);
|
|
VectorAdd (ent->old_origin, subtract, ent->old_origin);
|
|
len -= dist;
|
|
|
|
particle_new (pt_fire, part_tex_smoke, ent->old_origin,
|
|
2.0 + qfrandom (1.0), pvel, r_realtime + 0.5,
|
|
52 + (rand () & 4), 255);
|
|
}
|
|
}
|
|
|
|
void
|
|
R_FlameTrail (entity_t *ent)
|
|
{
|
|
float dist, len;
|
|
static int tracercount;
|
|
vec3_t subtract, vec, pvel;
|
|
|
|
if (numparticles >= r_maxparticles)
|
|
return;
|
|
|
|
VectorSubtract (ent->origin, ent->old_origin, vec);
|
|
len = VectorNormalize (vec);
|
|
dist = 3.0;
|
|
|
|
while (len > 0) {
|
|
if (numparticles >= r_maxparticles)
|
|
break;
|
|
|
|
VectorCopy (vec3_origin, pvel);
|
|
tracercount++;
|
|
if (tracercount & 1) {
|
|
pvel[0] = 30 * vec[1];
|
|
pvel[1] = 30 * -vec[0];
|
|
} else {
|
|
pvel[0] = 30 * -vec[1];
|
|
pvel[1] = 30 * vec[0];
|
|
}
|
|
|
|
VectorScale (vec, min(dist, len), subtract);
|
|
VectorAdd (ent->old_origin, subtract, ent->old_origin);
|
|
len -= dist;
|
|
|
|
particle_new (pt_fire, part_tex_smoke, ent->old_origin,
|
|
2.0 + qfrandom (1.0), pvel, r_realtime + 0.5, 234, 255);
|
|
}
|
|
}
|
|
|
|
void
|
|
R_VoorTrail (entity_t *ent)
|
|
{
|
|
float dist, len;
|
|
int j;
|
|
vec3_t subtract, vec, porg;
|
|
|
|
if (numparticles >= r_maxparticles)
|
|
return;
|
|
|
|
VectorSubtract (ent->origin, ent->old_origin, vec);
|
|
len = VectorNormalize (vec);
|
|
dist = 3.0;
|
|
|
|
while (len > 0) {
|
|
if (numparticles >= r_maxparticles)
|
|
break;
|
|
|
|
for (j = 0; j < 3; j++)
|
|
porg[j] = ent->old_origin[j] + qfrandom (16.0) - 8.0;
|
|
|
|
VectorScale (vec, min(dist, len), subtract);
|
|
VectorAdd (ent->old_origin, subtract, ent->old_origin);
|
|
len -= dist;
|
|
|
|
particle_new (pt_static, part_tex_dot, porg, 1.0 + qfrandom (1.0),
|
|
vec3_origin, r_realtime + 0.3,
|
|
9 * 16 + 8 + (rand () & 3), 255);
|
|
}
|
|
}
|
|
|
|
void
|
|
R_DrawParticles (void)
|
|
{
|
|
byte i;
|
|
unsigned char *at;
|
|
float dvel, grav, fast_grav, minparticledist, scale;
|
|
int activeparticles, maxparticle, j, k;
|
|
particle_t *part;
|
|
vec3_t up_scale, right_scale, up_right_scale, down_right_scale;
|
|
|
|
if (!r_particles->int_val)
|
|
return;
|
|
|
|
// LordHavoc: particles should not affect zbuffer
|
|
qfglDepthMask (GL_FALSE);
|
|
|
|
varray[0].texcoord[0] = 0; varray[0].texcoord[1] = 1;
|
|
varray[1].texcoord[0] = 0; varray[1].texcoord[1] = 0;
|
|
varray[2].texcoord[0] = 1; varray[2].texcoord[1] = 0;
|
|
varray[3].texcoord[0] = 1; varray[3].texcoord[1] = 1;
|
|
|
|
grav = (fast_grav = r_frametime * 800) * 0.05;
|
|
dvel = 4 * r_frametime;
|
|
|
|
minparticledist = DotProduct (r_refdef.vieworg, vpn) + 32.0f;
|
|
|
|
activeparticles = 0;
|
|
maxparticle = -1;
|
|
j = 0;
|
|
|
|
for (k = 0, part = particles; k < numparticles; k++, part++) {
|
|
// LordHavoc: this is probably no longer necessary, as it is
|
|
// checked at the end, but could still happen on weird particle
|
|
// effects, left for safety...
|
|
if (part->die <= r_realtime) {
|
|
freeparticles[j++] = part;
|
|
continue;
|
|
}
|
|
maxparticle = k;
|
|
activeparticles++;
|
|
|
|
// Don't render particles too close to us.
|
|
// Note, we must still do physics and such on them.
|
|
if (!(DotProduct (part->org, vpn) < minparticledist)) {
|
|
at = (byte *) & d_8to24table[(byte) part->color];
|
|
|
|
varray[0].color[0] = at[0];
|
|
varray[0].color[1] = at[1];
|
|
varray[0].color[2] = at[2];
|
|
varray[0].color[3] = part->alpha;
|
|
|
|
memcpy(varray[1].color, varray[0].color, sizeof(varray[0].color));
|
|
memcpy(varray[2].color, varray[0].color, sizeof(varray[0].color));
|
|
memcpy(varray[3].color, varray[0].color, sizeof(varray[0].color));
|
|
|
|
scale = part->scale;
|
|
|
|
VectorScale (vup, scale, up_scale);
|
|
VectorScale (vright, scale, right_scale);
|
|
|
|
VectorAdd (right_scale, up_scale, up_right_scale);
|
|
VectorSubtract (right_scale, up_scale, down_right_scale);
|
|
|
|
VectorAdd (part->org, up_right_scale, varray[0].vertex);
|
|
VectorAdd (part->org, down_right_scale, varray[1].vertex);
|
|
VectorSubtract (part->org, up_right_scale, varray[2].vertex);
|
|
VectorSubtract (part->org, down_right_scale, varray[3].vertex);
|
|
|
|
qfglBindTexture (GL_TEXTURE_2D, part->tex);
|
|
qfglDrawArrays (GL_QUADS, 0, 4);
|
|
}
|
|
|
|
for (i = 0; i < 3; i++)
|
|
part->org[i] += part->vel[i] * r_frametime;
|
|
|
|
switch (part->type) {
|
|
case pt_static:
|
|
break;
|
|
case pt_blob:
|
|
for (i = 0; i < 3; i++)
|
|
part->vel[i] += part->vel[i] * dvel;
|
|
part->vel[2] -= grav;
|
|
break;
|
|
case pt_blob2:
|
|
for (i = 0; i < 2; i++)
|
|
part->vel[i] -= part->vel[i] * dvel;
|
|
part->vel[2] -= grav;
|
|
break;
|
|
case pt_grav:
|
|
part->vel[2] -= grav;
|
|
break;
|
|
case pt_smoke:
|
|
if ((part->alpha -= r_frametime * 100) < 1)
|
|
part->die = -1;
|
|
part->scale += r_frametime * 4;
|
|
// part->org[2] += r_frametime * 30 - grav;
|
|
break;
|
|
case pt_smokecloud:
|
|
if ((part->alpha -= r_frametime * 140) < 1)
|
|
{
|
|
part->die = -1;
|
|
break;
|
|
}
|
|
part->scale += r_frametime * 50;
|
|
part->org[2] += r_frametime * 30;
|
|
break;
|
|
case pt_bloodcloud:
|
|
if ((part->alpha -= r_frametime * 65) < 1)
|
|
{
|
|
part->die = -1;
|
|
break;
|
|
}
|
|
part->scale += r_frametime * 4;
|
|
part->vel[2] -= grav;
|
|
break;
|
|
case pt_fallfadespark:
|
|
if ((part->alpha -= r_frametime * 256) < 1)
|
|
part->die = -1;
|
|
part->vel[2] -= fast_grav;
|
|
break;
|
|
case pt_fire:
|
|
if ((part->alpha -= r_frametime * 32) < 1)
|
|
part->die = -1;
|
|
part->scale -= r_frametime * 2;
|
|
break;
|
|
default:
|
|
Con_DPrintf ("unhandled particle type %d\n", part->type);
|
|
break;
|
|
}
|
|
}
|
|
k = 0;
|
|
while (maxparticle >= activeparticles) {
|
|
*freeparticles[k++] = particles[maxparticle--];
|
|
while (maxparticle >= activeparticles &&
|
|
particles[maxparticle].die <= r_realtime)
|
|
maxparticle--;
|
|
}
|
|
numparticles = activeparticles;
|
|
|
|
qfglColor3ubv (color_white);
|
|
qfglDepthMask (GL_TRUE);
|
|
}
|