946 lines
26 KiB
C++
946 lines
26 KiB
C++
/*
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Copyright (C) 1996-2001 Id Software, Inc.
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Copyright (C) 2002-2009 John Fitzgibbons and others
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Copyright (C) 2007-2008 Kristian Duske
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Copyright (C) 2010-2014 QuakeSpasm developers
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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 the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include "quakedef.hpp"
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#define ABSOLUTE_MAX_PARTICLES 32768 // default max # of particles at one time
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#define ABSOLUTE_MIN_PARTICLES 512 // no fewer than this no matter what's
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// on the command line
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#define DEFAULT_NUM_PARTICLES 16384
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static int ramp1[8] = {0x6f, 0x6d, 0x6b, 0x69, 0x67, 0x65, 0x63, 0x61};
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static int ramp2[8] = {0x6f, 0x6e, 0x6d, 0x6c, 0x6b, 0x6a, 0x68, 0x66};
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static int ramp3[8] = {0x6d, 0x6b, 6, 5, 4, 3};
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static particle_t *active_particles, *free_particles, *particles;
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static int r_numparticles;
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static gltexture_t *particletexture, *particletexture1, *particletexture2, *particletexture3; //johnfitz
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static float texturescalefactor; //johnfitz -- compensate for apparent size of different particle textures
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convar r_particles{"r_particles", "1", {.archive = true}}; //johnfitz
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convar r_quadparticles{"r_quadparticles", "1", {.archive = true}}; //johnfitz
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/*
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===============
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R_ParticleTextureLookup -- johnfitz -- generate nice antialiased 32x32 circle for particles
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===============
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*/
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int R_ParticleTextureLookup(int x, int y, int sharpness) {
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int r; //distance from point x,y to circle origin, squared
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int a; //alpha value to return
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x -= 16;
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y -= 16;
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r = x * x + y * y;
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r = r > 255 ? 255 : r;
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a = sharpness * (255 - r);
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a = std::min(a, 255);
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return a;
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}
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/*
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===============
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R_InitParticleTextures -- johnfitz -- rewritten
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===============
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*/
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void R_InitParticleTextures(void) {
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int x, y;
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static byte particle1_data[64 * 64 * 4];
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static byte particle2_data[2 * 2 * 4];
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static byte particle3_data[64 * 64 * 4];
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byte *dst;
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// particle texture 1 -- circle
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dst = particle1_data;
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for (x = 0; x < 64; x++)
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for (y = 0; y < 64; y++) {
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*dst++ = 255;
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*dst++ = 255;
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*dst++ = 255;
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*dst++ = R_ParticleTextureLookup(x, y, 8);
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}
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particletexture1 = TexMgr_LoadImage(NULL, "particle1", 64, 64, SRC_RGBA, particle1_data, "",
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(src_offset_t) particle1_data,
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TEXPREF_PERSIST | TEXPREF_ALPHA | TEXPREF_LINEAR);
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// particle texture 2 -- square
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dst = particle2_data;
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for (x = 0; x < 2; x++)
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for (y = 0; y < 2; y++) {
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*dst++ = 255;
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*dst++ = 255;
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*dst++ = 255;
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*dst++ = x || y ? 0 : 255;
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}
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particletexture2 = TexMgr_LoadImage(NULL, "particle2", 2, 2, SRC_RGBA, particle2_data, "",
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(src_offset_t) particle2_data,
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TEXPREF_PERSIST | TEXPREF_ALPHA | TEXPREF_NEAREST);
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// particle texture 3 -- blob
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dst = particle3_data;
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for (x = 0; x < 64; x++)
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for (y = 0; y < 64; y++) {
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*dst++ = 255;
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*dst++ = 255;
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*dst++ = 255;
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*dst++ = R_ParticleTextureLookup(x, y, 2);
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}
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particletexture3 = TexMgr_LoadImage(NULL, "particle3", 64, 64, SRC_RGBA, particle3_data, "",
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(src_offset_t) particle3_data,
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TEXPREF_PERSIST | TEXPREF_ALPHA | TEXPREF_LINEAR);
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//set default
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particletexture = particletexture1;
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texturescalefactor = 1.27;
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}
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/*
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===============
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R_SetParticleTexture_f -- johnfitz
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===============
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*/
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static void R_SetParticleTexture_f(convar *var) {
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switch ((int) (r_particles.value)) {
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case 1:
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particletexture = particletexture1;
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texturescalefactor = 1.27;
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break;
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case 2:
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particletexture = particletexture2;
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texturescalefactor = 1.0;
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break;
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// case 3:
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// particletexture = particletexture3;
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// texturescalefactor = 1.5;
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// break;
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}
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}
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/*
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===============
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R_InitParticles
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===============
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*/
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void R_InitParticles(void) {
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auto i = common::check_param("-particles");
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if (i.has_value() && i.value() < com_argc - 1) {
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r_numparticles = atoi(com_argv[i.value() + 1]);
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if (r_numparticles < ABSOLUTE_MIN_PARTICLES)
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r_numparticles = ABSOLUTE_MIN_PARTICLES;
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else if (r_numparticles > ABSOLUTE_MAX_PARTICLES)
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r_numparticles = ABSOLUTE_MAX_PARTICLES;
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} else {
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r_numparticles = DEFAULT_NUM_PARTICLES;
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}
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particles = (particle_t *)
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Hunk_AllocName(r_numparticles * sizeof(particle_t), "particles");
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r_particles.inscribe(); //johnfitz
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r_particles.set_callback(R_SetParticleTexture_f);
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r_quadparticles.inscribe(); //johnfitz
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R_InitParticleTextures(); //johnfitz
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}
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/*
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===============
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R_EntityParticles
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===============
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*/
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static vec3_t avelocities[NUMVERTEXNORMALS];
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static float beamlength = 16;
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void R_EntityParticles(entity_t *ent) {
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int i;
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particle_t *p;
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float angle;
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float sp, sy, cp, cy;
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// float sr, cr;
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// int count;
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vec3_t forward;
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float dist;
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dist = 64;
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// count = 50;
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if (!avelocities[0][0]) {
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for (i = 0; i < NUMVERTEXNORMALS; i++) {
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avelocities[i][0] = (rand() & 255) * 0.01;
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avelocities[i][1] = (rand() & 255) * 0.01;
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avelocities[i][2] = (rand() & 255) * 0.01;
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}
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}
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for (i = 0; i < NUMVERTEXNORMALS; i++) {
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angle = cl.time * avelocities[i][0];
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sy = sin(angle);
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cy = cos(angle);
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angle = cl.time * avelocities[i][1];
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sp = sin(angle);
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cp = cos(angle);
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angle = cl.time * avelocities[i][2];
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// sr = sin(angle);
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// cr = cos(angle);
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forward[0] = cp * cy;
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forward[1] = cp * sy;
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forward[2] = -sp;
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if (!free_particles)
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return;
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p = free_particles;
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free_particles = p->next;
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p->next = active_particles;
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active_particles = p;
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p->die = cl.time + 0.01;
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p->color = 0x6f;
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p->type = pt_explode;
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p->org[0] = ent->origin[0] + r_avertexnormals[i][0] * dist + forward[0] * beamlength;
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p->org[1] = ent->origin[1] + r_avertexnormals[i][1] * dist + forward[1] * beamlength;
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p->org[2] = ent->origin[2] + r_avertexnormals[i][2] * dist + forward[2] * beamlength;
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}
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}
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/*
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===============
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R_ClearParticles
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===============
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*/
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void R_ClearParticles(void) {
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int i;
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free_particles = &particles[0];
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active_particles = NULL;
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for (i = 0; i < r_numparticles; i++)
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particles[i].next = &particles[i + 1];
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particles[r_numparticles - 1].next = NULL;
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}
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/*
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===============
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R_ReadPointFile_f
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===============
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*/
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void R_ReadPointFile_f(void) {
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FILE *f;
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vec3_t org;
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int r;
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int c;
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particle_t *p;
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char name[MAX_QPATH];
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if (cls.state != ca_connected)
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return; // need an active map.
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q_snprintf(name, sizeof(name), "maps/%s.pts", cl.mapname);
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COM_FOpenFile(name, &f, NULL);
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if (!f) {
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console::info("couldn't open %s\n", name);
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return;
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}
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console::info("Reading %s...\n", name);
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c = 0;
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org[0] = org[1] = org[2] = 0; // silence pesky compiler warnings
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for (;;) {
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r = fscanf(f, "%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 (!free_particles) {
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console::info("Not enough free particles\n");
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break;
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}
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p = free_particles;
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free_particles = p->next;
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p->next = active_particles;
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active_particles = p;
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p->die = 99999;
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p->color = (-c) & 15;
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p->type = pt_static;
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VectorCopy(vec3_origin, p->vel);
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VectorCopy(org, p->org);
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}
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fclose(f);
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console::info("%i points read\n", c);
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}
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/*
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===============
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R_ParseParticleEffect
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Parse an effect out of the server message
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===============
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*/
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void R_ParseParticleEffect(void) {
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vec3_t org, dir;
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int i, count, msgcount, color;
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for (i = 0; i < 3; i++)
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org[i] = net_message.read_coord(static_cast<net::rmq_flags>(cl.protocolflags)).value();
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for (i = 0; i < 3; i++)
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dir[i] = net_message.read_char().value() * (1.0 / 16);
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msgcount = net_message.read_byte().value();
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color = net_message.read_byte().value();
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if (msgcount == 255)
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count = 1024;
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else
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count = msgcount;
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R_RunParticleEffect(org, dir, color, count);
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}
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/*
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===============
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R_ParticleExplosion
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===============
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*/
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void R_ParticleExplosion(vec3_t org) {
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int i, j;
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particle_t *p;
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for (i = 0; i < 1024; i++) {
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if (!free_particles)
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return;
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p = free_particles;
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free_particles = p->next;
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p->next = active_particles;
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active_particles = p;
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p->die = cl.time + 5;
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p->color = ramp1[0];
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p->ramp = rand() & 3;
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if (i & 1) {
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p->type = pt_explode;
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for (j = 0; j < 3; j++) {
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p->org[j] = org[j] + ((rand() % 32) - 16);
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p->vel[j] = (rand() % 512) - 256;
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}
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} else {
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p->type = pt_explode2;
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for (j = 0; j < 3; j++) {
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p->org[j] = org[j] + ((rand() % 32) - 16);
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p->vel[j] = (rand() % 512) - 256;
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}
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}
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}
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}
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/*
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===============
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R_ParticleExplosion2
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===============
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*/
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void R_ParticleExplosion2(vec3_t org, int colorStart, int colorLength) {
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int i, j;
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particle_t *p;
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int colorMod = 0;
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for (i = 0; i < 512; i++) {
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if (!free_particles)
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return;
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p = free_particles;
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free_particles = p->next;
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p->next = active_particles;
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active_particles = p;
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p->die = cl.time + 0.3;
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p->color = colorStart + (colorMod % colorLength);
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colorMod++;
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p->type = pt_blob;
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for (j = 0; j < 3; j++) {
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p->org[j] = org[j] + ((rand() % 32) - 16);
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p->vel[j] = (rand() % 512) - 256;
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}
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}
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}
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/*
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===============
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R_BlobExplosion
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===============
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*/
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void R_BlobExplosion(vec3_t org) {
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int i, j;
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particle_t *p;
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for (i = 0; i < 1024; i++) {
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if (!free_particles)
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return;
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p = free_particles;
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free_particles = p->next;
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p->next = active_particles;
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active_particles = p;
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p->die = cl.time + 1 + (rand() & 8) * 0.05;
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if (i & 1) {
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p->type = pt_blob;
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p->color = 66 + rand() % 6;
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for (j = 0; j < 3; j++) {
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p->org[j] = org[j] + ((rand() % 32) - 16);
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p->vel[j] = (rand() % 512) - 256;
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}
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} else {
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p->type = pt_blob2;
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p->color = 150 + rand() % 6;
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for (j = 0; j < 3; j++) {
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p->org[j] = org[j] + ((rand() % 32) - 16);
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p->vel[j] = (rand() % 512) - 256;
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}
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}
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}
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}
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/*
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===============
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R_RunParticleEffect
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===============
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*/
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void R_RunParticleEffect(vec3_t org, vec3_t dir, int color, int count) {
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int i, j;
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particle_t *p;
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for (i = 0; i < count; i++) {
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if (!free_particles)
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return;
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p = free_particles;
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free_particles = p->next;
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p->next = active_particles;
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active_particles = p;
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if (count == 1024) {
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// rocket explosion
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p->die = cl.time + 5;
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p->color = ramp1[0];
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p->ramp = rand() & 3;
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if (i & 1) {
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p->type = pt_explode;
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for (j = 0; j < 3; j++) {
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p->org[j] = org[j] + ((rand() % 32) - 16);
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p->vel[j] = (rand() % 512) - 256;
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}
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} else {
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p->type = pt_explode2;
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for (j = 0; j < 3; j++) {
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p->org[j] = org[j] + ((rand() % 32) - 16);
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p->vel[j] = (rand() % 512) - 256;
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}
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}
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} else {
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p->die = cl.time + 0.1 * (rand() % 5);
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p->color = (color & ~7) + (rand() & 7);
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p->type = pt_slowgrav;
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for (j = 0; j < 3; j++) {
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p->org[j] = org[j] + ((rand() & 15) - 8);
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p->vel[j] = dir[j] * 15; // + (rand()%300)-150;
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}
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}
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}
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}
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/*
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===============
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R_LavaSplash
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===============
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*/
|
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void R_LavaSplash(vec3_t org) {
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int i, j, k;
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particle_t *p;
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float vel;
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vec3_t dir;
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for (i = -16; i < 16; i++)
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for (j = -16; j < 16; j++)
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for (k = 0; k < 1; k++) {
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if (!free_particles)
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return;
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p = free_particles;
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free_particles = p->next;
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p->next = active_particles;
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active_particles = p;
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p->die = cl.time + 2 + (rand() & 31) * 0.02;
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p->color = 224 + (rand() & 7);
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p->type = pt_slowgrav;
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dir[0] = j * 8 + (rand() & 7);
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dir[1] = i * 8 + (rand() & 7);
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dir[2] = 256;
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p->org[0] = org[0] + dir[0];
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p->org[1] = org[1] + dir[1];
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p->org[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, p->vel);
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}
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}
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|
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/*
|
|
===============
|
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R_TeleportSplash
|
|
===============
|
|
*/
|
|
void R_TeleportSplash(vec3_t org) {
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int i, j, k;
|
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particle_t *p;
|
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float vel;
|
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vec3_t dir;
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|
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for (i = -16; i < 16; i += 4) {
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for (j = -16; j < 16; j += 4) {
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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_slowgrav;
|
|
|
|
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);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
===============
|
|
R_RocketTrail
|
|
|
|
FIXME -- rename function and use #defined types instead of numbers
|
|
===============
|
|
*/
|
|
void R_RocketTrail(vec3_t start, vec3_t end, int type) {
|
|
vec3_t vec;
|
|
float len;
|
|
int j;
|
|
particle_t *p;
|
|
int dec;
|
|
static int tracercount;
|
|
|
|
VectorSubtract(end, start, vec);
|
|
len = VectorNormalize(vec);
|
|
if (type < 128)
|
|
dec = 3;
|
|
else {
|
|
dec = 1;
|
|
type -= 128;
|
|
}
|
|
|
|
while (len > 0) {
|
|
len -= dec;
|
|
|
|
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;
|
|
|
|
switch (type) {
|
|
case 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] = start[j] + ((rand() % 6) - 3);
|
|
break;
|
|
|
|
case 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] = start[j] + ((rand() % 6) - 3);
|
|
break;
|
|
|
|
case 2: // blood
|
|
p->type = pt_grav;
|
|
p->color = 67 + (rand() & 3);
|
|
for (j = 0; j < 3; j++)
|
|
p->org[j] = start[j] + ((rand() % 6) - 3);
|
|
break;
|
|
|
|
case 3:
|
|
case 5: // tracer
|
|
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(start, 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];
|
|
}
|
|
break;
|
|
|
|
case 4: // slight blood
|
|
p->type = pt_grav;
|
|
p->color = 67 + (rand() & 3);
|
|
for (j = 0; j < 3; j++)
|
|
p->org[j] = start[j] + ((rand() % 6) - 3);
|
|
len -= 3;
|
|
break;
|
|
|
|
case 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] = start[j] + ((rand() & 15) - 8);
|
|
break;
|
|
}
|
|
|
|
VectorAdd(start, vec, start);
|
|
}
|
|
}
|
|
|
|
/*
|
|
===============
|
|
CL_RunParticles -- johnfitz -- all the particle behavior, separated from R_DrawParticles
|
|
===============
|
|
*/
|
|
void CL_RunParticles(void) {
|
|
particle_t *p, *kill;
|
|
int i;
|
|
float time1, time2, time3, dvel, frametime, grav;
|
|
extern convar sv_gravity;
|
|
|
|
frametime = cl.time - cl.oldtime;
|
|
time3 = frametime * 15;
|
|
time2 = frametime * 10;
|
|
time1 = frametime * 5;
|
|
grav = frametime * sv_gravity.value * 0.05;
|
|
dvel = 4 * frametime;
|
|
|
|
for (;;) {
|
|
kill = active_particles;
|
|
if (kill && kill->die < cl.time) {
|
|
active_particles = kill->next;
|
|
kill->next = free_particles;
|
|
free_particles = kill;
|
|
continue;
|
|
}
|
|
break;
|
|
}
|
|
|
|
for (p = active_particles; p; p = p->next) {
|
|
for (;;) {
|
|
kill = p->next;
|
|
if (kill && kill->die < cl.time) {
|
|
p->next = kill->next;
|
|
kill->next = free_particles;
|
|
free_particles = kill;
|
|
continue;
|
|
}
|
|
break;
|
|
}
|
|
|
|
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_grav:
|
|
case pt_slowgrav:
|
|
p->vel[2] -= grav;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
===============
|
|
R_DrawParticles -- johnfitz -- moved all non-drawing code to CL_RunParticles
|
|
===============
|
|
*/
|
|
void R_DrawParticles(void) {
|
|
particle_t *p;
|
|
float scale;
|
|
vec3_t up, right, p_up, p_right, p_upright; //johnfitz -- p_ vectors
|
|
GLubyte color[4], *c; //johnfitz -- particle transparency
|
|
extern convar r_particles; //johnfitz
|
|
//float alpha; //johnfitz -- particle transparency
|
|
|
|
if (!r_particles.value)
|
|
return;
|
|
|
|
//ericw -- avoid empty glBegin(),glEnd() pair below; causes issues on AMD
|
|
if (!active_particles)
|
|
return;
|
|
|
|
VectorScale(vup, 1.5, up);
|
|
VectorScale(vright, 1.5, right);
|
|
|
|
GL_Bind(particletexture);
|
|
glEnable(GL_BLEND);
|
|
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
|
|
glDepthMask(GL_FALSE); //johnfitz -- fix for particle z-buffer bug
|
|
|
|
if (r_quadparticles.value) //johnitz -- quads save fillrate
|
|
{
|
|
glBegin(GL_QUADS);
|
|
for (p = active_particles; p; p = p->next) {
|
|
// hack a scale up to keep particles from disapearing
|
|
scale = (p->org[0] - r_origin[0]) * vpn[0]
|
|
+ (p->org[1] - r_origin[1]) * vpn[1]
|
|
+ (p->org[2] - r_origin[2]) * vpn[2];
|
|
if (scale < 20)
|
|
scale = 1 + 0.08; //johnfitz -- added .08 to be consistent
|
|
else
|
|
scale = 1 + scale * 0.004;
|
|
|
|
scale /= 2.0; //quad is half the size of triangle
|
|
|
|
scale *= texturescalefactor; //johnfitz -- compensate for apparent size of different particle textures
|
|
|
|
//johnfitz -- particle transparency and fade out
|
|
c = (GLubyte *) &d_8to24table[(int) p->color];
|
|
color[0] = c[0];
|
|
color[1] = c[1];
|
|
color[2] = c[2];
|
|
//alpha = std::clamp(p->die + 0.5 - cl.time, 0, 1);
|
|
color[3] = 255; //(int)(alpha * 255);
|
|
glColor4ubv(color);
|
|
//johnfitz
|
|
|
|
glTexCoord2f(0, 0);
|
|
glVertex3fv(p->org);
|
|
|
|
glTexCoord2f(0.5, 0);
|
|
VectorMA(p->org, scale, up, p_up);
|
|
glVertex3fv(p_up);
|
|
|
|
glTexCoord2f(0.5, 0.5);
|
|
VectorMA(p_up, scale, right, p_upright);
|
|
glVertex3fv(p_upright);
|
|
|
|
glTexCoord2f(0, 0.5);
|
|
VectorMA(p->org, scale, right, p_right);
|
|
glVertex3fv(p_right);
|
|
}
|
|
glEnd();
|
|
} else //johnitz -- triangles save verts
|
|
{
|
|
glBegin(GL_TRIANGLES);
|
|
for (p = active_particles; p; p = p->next) {
|
|
// hack a scale up to keep particles from disapearing
|
|
scale = (p->org[0] - r_origin[0]) * vpn[0]
|
|
+ (p->org[1] - r_origin[1]) * vpn[1]
|
|
+ (p->org[2] - r_origin[2]) * vpn[2];
|
|
if (scale < 20)
|
|
scale = 1 + 0.08; //johnfitz -- added .08 to be consistent
|
|
else
|
|
scale = 1 + scale * 0.004;
|
|
|
|
scale *= texturescalefactor; //johnfitz -- compensate for apparent size of different particle textures
|
|
|
|
//johnfitz -- particle transparency and fade out
|
|
c = (GLubyte *) &d_8to24table[(int) p->color];
|
|
color[0] = c[0];
|
|
color[1] = c[1];
|
|
color[2] = c[2];
|
|
//alpha = std::clamp(p->die + 0.5 - cl.time, 0, 1);
|
|
color[3] = 255; //(int)(alpha * 255);
|
|
glColor4ubv(color);
|
|
//johnfitz
|
|
|
|
glTexCoord2f(0, 0);
|
|
glVertex3fv(p->org);
|
|
|
|
glTexCoord2f(1, 0);
|
|
VectorMA(p->org, scale, up, p_up);
|
|
glVertex3fv(p_up);
|
|
|
|
glTexCoord2f(0, 1);
|
|
VectorMA(p->org, scale, right, p_right);
|
|
glVertex3fv(p_right);
|
|
}
|
|
glEnd();
|
|
}
|
|
|
|
glDepthMask(GL_TRUE); //johnfitz -- fix for particle z-buffer bug
|
|
glDisable(GL_BLEND);
|
|
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
|
|
glColor3f(1, 1, 1);
|
|
}
|
|
|
|
|
|
/*
|
|
===============
|
|
R_DrawParticles_ShowTris -- johnfitz
|
|
===============
|
|
*/
|
|
void R_DrawParticles_ShowTris(void) {
|
|
particle_t *p;
|
|
float scale;
|
|
vec3_t up, right, p_up, p_right, p_upright;
|
|
extern convar r_particles;
|
|
|
|
if (!r_particles.value)
|
|
return;
|
|
|
|
VectorScale(vup, 1.5, up);
|
|
VectorScale(vright, 1.5, right);
|
|
|
|
if (r_quadparticles.value) {
|
|
for (p = active_particles; p; p = p->next) {
|
|
glBegin(GL_TRIANGLE_FAN);
|
|
|
|
// hack a scale up to keep particles from disapearing
|
|
scale = (p->org[0] - r_origin[0]) * vpn[0]
|
|
+ (p->org[1] - r_origin[1]) * vpn[1]
|
|
+ (p->org[2] - r_origin[2]) * vpn[2];
|
|
if (scale < 20)
|
|
scale = 1 + 0.08; //johnfitz -- added .08 to be consistent
|
|
else
|
|
scale = 1 + scale * 0.004;
|
|
|
|
scale /= 2.0; //quad is half the size of triangle
|
|
|
|
scale *= texturescalefactor; //compensate for apparent size of different particle textures
|
|
|
|
glVertex3fv(p->org);
|
|
|
|
VectorMA(p->org, scale, up, p_up);
|
|
glVertex3fv(p_up);
|
|
|
|
VectorMA(p_up, scale, right, p_upright);
|
|
glVertex3fv(p_upright);
|
|
|
|
VectorMA(p->org, scale, right, p_right);
|
|
glVertex3fv(p_right);
|
|
|
|
glEnd();
|
|
}
|
|
} else {
|
|
glBegin(GL_TRIANGLES);
|
|
for (p = active_particles; p; p = p->next) {
|
|
// hack a scale up to keep particles from disapearing
|
|
scale = (p->org[0] - r_origin[0]) * vpn[0]
|
|
+ (p->org[1] - r_origin[1]) * vpn[1]
|
|
+ (p->org[2] - r_origin[2]) * vpn[2];
|
|
if (scale < 20)
|
|
scale = 1 + 0.08; //johnfitz -- added .08 to be consistent
|
|
else
|
|
scale = 1 + scale * 0.004;
|
|
|
|
scale *= texturescalefactor; //compensate for apparent size of different particle textures
|
|
|
|
glVertex3fv(p->org);
|
|
|
|
VectorMA(p->org, scale, up, p_up);
|
|
glVertex3fv(p_up);
|
|
|
|
VectorMA(p->org, scale, right, p_right);
|
|
glVertex3fv(p_right);
|
|
}
|
|
glEnd();
|
|
}
|
|
}
|