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- /*
- Copyright (C) 1996-1997 Id Software, Inc.
-
- This program is free software; you can redistribute it and/or
- modify it under the terms of the GNU General Public License
- as published by the Free Software Foundation; either version 2
- of the License, or (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
-
- See the GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
-
- */
-
- #include "quakedef.h"
- #include "r_local.h"
-
- #define MAX_PARTICLES 2048 // default max # of particles at one
- // time
- #define ABSOLUTE_MIN_PARTICLES 512 // no fewer than this no matter what's
- // on the command line
-
- int ramp1[8] = {0x6f, 0x6d, 0x6b, 0x69, 0x67, 0x65, 0x63, 0x61};
- int ramp2[8] = {0x6f, 0x6e, 0x6d, 0x6c, 0x6b, 0x6a, 0x68, 0x66};
- int ramp3[8] = {0x6d, 0x6b, 6, 5, 4, 3};
-
- particle_t *active_particles, *free_particles;
-
- particle_t *particles;
- int r_numparticles;
-
- vec3_t r_pright, r_pup, r_ppn;
-
-
- /*
- ===============
- R_InitParticles
- ===============
- */
- void R_InitParticles (void)
- {
- int i;
-
- i = COM_CheckParm ("-particles");
-
- if (i)
- {
- r_numparticles = (int)(Q_atoi(com_argv[i+1]));
- if (r_numparticles < ABSOLUTE_MIN_PARTICLES)
- r_numparticles = ABSOLUTE_MIN_PARTICLES;
- }
- else
- {
- r_numparticles = MAX_PARTICLES;
- }
-
- particles = (particle_t *)
- Hunk_AllocName (r_numparticles * sizeof(particle_t), "particles");
- }
-
-
- /*
- ===============
- R_ClearParticles
- ===============
- */
- void R_ClearParticles (void)
- {
- int i;
-
- free_particles = &particles[0];
- active_particles = NULL;
-
- for (i=0 ;i<r_numparticles ; i++)
- particles[i].next = &particles[i+1];
- particles[r_numparticles-1].next = NULL;
- }
-
-
- void R_ReadPointFile_f (void)
- {
- FILE *f;
- vec3_t org;
- int r;
- int c;
- particle_t *p;
- char name[MAX_OSPATH];
-
- // FIXME sprintf (name,"maps/%s.pts", sv.name);
-
- COM_FOpenFile (name, &f);
- if (!f)
- {
- Con_Printf ("couldn't open %s\n", name);
- return;
- }
-
- Con_Printf ("Reading %s...\n", name);
- c = 0;
- for ( ;; )
- {
- r = fscanf (f,"%f %f %f\n", &org[0], &org[1], &org[2]);
- if (r != 3)
- break;
- c++;
-
- if (!free_particles)
- {
- Con_Printf ("Not enough free particles\n");
- break;
- }
- p = free_particles;
- free_particles = p->next;
- p->next = active_particles;
- active_particles = p;
-
- p->die = 99999;
- p->color = (-c)&15;
- p->type = pt_static;
- VectorCopy (vec3_origin, p->vel);
- VectorCopy (org, p->org);
- }
-
- fclose (f);
- Con_Printf ("%i points read\n", c);
- }
-
- /*
- ===============
- R_ParticleExplosion
-
- ===============
- */
- void R_ParticleExplosion (vec3_t org)
- {
- int i, j;
- particle_t *p;
-
- for (i=0 ; i<1024 ; i++)
- {
- if (!free_particles)
- return;
- p = free_particles;
- free_particles = p->next;
- p->next = active_particles;
- active_particles = p;
-
- p->die = cl.time + 5;
- p->color = ramp1[0];
- p->ramp = rand()&3;
- if (i & 1)
- {
- p->type = pt_explode;
- for (j=0 ; j<3 ; j++)
- {
- p->org[j] = org[j] + ((rand()%32)-16);
- p->vel[j] = (rand()%512)-256;
- }
- }
- else
- {
- p->type = pt_explode2;
- for (j=0 ; j<3 ; j++)
- {
- p->org[j] = org[j] + ((rand()%32)-16);
- p->vel[j] = (rand()%512)-256;
- }
- }
- }
- }
-
- /*
- ===============
- R_BlobExplosion
-
- ===============
- */
- void R_BlobExplosion (vec3_t org)
- {
- int i, j;
- particle_t *p;
-
- for (i=0 ; i<1024 ; i++)
- {
- if (!free_particles)
- return;
- p = free_particles;
- free_particles = p->next;
- p->next = active_particles;
- active_particles = p;
-
- p->die = cl.time + 1 + (rand()&8)*0.05;
-
- if (i & 1)
- {
- p->type = pt_blob;
- p->color = 66 + rand()%6;
- for (j=0 ; j<3 ; j++)
- {
- p->org[j] = org[j] + ((rand()%32)-16);
- p->vel[j] = (rand()%512)-256;
- }
- }
- else
- {
- p->type = pt_blob2;
- p->color = 150 + rand()%6;
- for (j=0 ; j<3 ; j++)
- {
- p->org[j] = org[j] + ((rand()%32)-16);
- p->vel[j] = (rand()%512)-256;
- }
- }
- }
- }
-
- /*
- ===============
- R_RunParticleEffect
-
- ===============
- */
- void R_RunParticleEffect (vec3_t org, vec3_t dir, int color, int count)
- {
- int i, j;
- particle_t *p;
- int scale;
-
- if (count > 130)
- scale = 3;
- else if (count > 20)
- scale = 2;
- else
- scale = 1;
-
- for (i=0 ; i<count ; i++)
- {
- if (!free_particles)
- return;
- p = free_particles;
- free_particles = p->next;
- p->next = active_particles;
- active_particles = p;
-
- p->die = cl.time + 0.1*(rand()%5);
- p->color = (color&~7) + (rand()&7);
- p->type = pt_grav;
- for (j=0 ; j<3 ; j++)
- {
- p->org[j] = org[j] + scale*((rand()&15)-8);
- p->vel[j] = dir[j]*15;// + (rand()%300)-150;
- }
- }
- }
-
-
- /*
- ===============
- R_LavaSplash
-
- ===============
- */
- void R_LavaSplash (vec3_t org)
- {
- int i, j, k;
- particle_t *p;
- float vel;
- vec3_t dir;
-
- for (i=-16 ; i<16 ; i++)
- for (j=-16 ; j<16 ; j++)
- for (k=0 ; k<1 ; k++)
- {
- if (!free_particles)
- return;
- p = free_particles;
- free_particles = p->next;
- p->next = active_particles;
- active_particles = p;
-
- p->die = cl.time + 2 + (rand()&31) * 0.02;
- p->color = 224 + (rand()&7);
- p->type = pt_grav;
-
- dir[0] = j*8 + (rand()&7);
- dir[1] = i*8 + (rand()&7);
- dir[2] = 256;
-
- p->org[0] = org[0] + dir[0];
- p->org[1] = org[1] + dir[1];
- p->org[2] = org[2] + (rand()&63);
-
- VectorNormalize (dir);
- vel = 50 + (rand()&63);
- VectorScale (dir, vel, p->vel);
- }
- }
-
- /*
- ===============
- R_TeleportSplash
-
- ===============
- */
- void R_TeleportSplash (vec3_t org)
- {
- int i, j, k;
- particle_t *p;
- float vel;
- vec3_t dir;
-
- for (i=-16 ; i<16 ; i+=4)
- for (j=-16 ; j<16 ; j+=4)
- for (k=-24 ; k<32 ; k+=4)
- {
- if (!free_particles)
- return;
- p = free_particles;
- free_particles = p->next;
- p->next = active_particles;
- active_particles = p;
-
- p->die = cl.time + 0.2 + (rand()&7) * 0.02;
- p->color = 7 + (rand()&7);
- p->type = pt_grav;
-
- dir[0] = j*8;
- dir[1] = i*8;
- dir[2] = k*8;
-
- p->org[0] = org[0] + i + (rand()&3);
- p->org[1] = org[1] + j + (rand()&3);
- p->org[2] = org[2] + k + (rand()&3);
-
- VectorNormalize (dir);
- vel = 50 + (rand()&63);
- VectorScale (dir, vel, p->vel);
- }
- }
-
- void R_RocketTrail (vec3_t start, vec3_t end, int type)
- {
- vec3_t vec;
- float len;
- int j;
- particle_t *p;
-
- VectorSubtract (end, start, vec);
- len = VectorNormalize (vec);
- while (len > 0)
- {
- len -= 3;
-
- if (!free_particles)
- return;
- p = free_particles;
- free_particles = p->next;
- p->next = active_particles;
- active_particles = p;
-
- VectorCopy (vec3_origin, p->vel);
- p->die = cl.time + 2;
-
- if (type == 4)
- { // slight blood
- p->type = pt_slowgrav;
- p->color = 67 + (rand()&3);
- for (j=0 ; j<3 ; j++)
- p->org[j] = start[j] + ((rand()%6)-3);
- len -= 3;
- }
- else if (type == 2)
- { // blood
- p->type = pt_slowgrav;
- p->color = 67 + (rand()&3);
- for (j=0 ; j<3 ; j++)
- p->org[j] = start[j] + ((rand()%6)-3);
- }
- else if (type == 6)
- { // voor trail
- p->color = 9*16 + 8 + (rand()&3);
- p->type = pt_static;
- p->die = cl.time + 0.3;
- for (j=0 ; j<3 ; j++)
- p->org[j] = start[j] + ((rand()&15)-8);
- }
- else if (type == 1)
- { // smoke smoke
- p->ramp = (rand()&3) + 2;
- p->color = ramp3[(int)p->ramp];
- p->type = pt_fire;
- for (j=0 ; j<3 ; j++)
- p->org[j] = start[j] + ((rand()%6)-3);
- }
- else if (type == 0)
- { // rocket trail
- p->ramp = (rand()&3);
- p->color = ramp3[(int)p->ramp];
- p->type = pt_fire;
- for (j=0 ; j<3 ; j++)
- p->org[j] = start[j] + ((rand()%6)-3);
- }
- else if (type == 3 || type == 5)
- { // tracer
- static int tracercount;
-
- p->die = cl.time + 0.5;
- p->type = pt_static;
- if (type == 3)
- p->color = 52 + ((tracercount&4)<<1);
- else
- p->color = 230 + ((tracercount&4)<<1);
-
- tracercount++;
-
- VectorCopy (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];
- }
-
- }
-
-
- VectorAdd (start, vec, start);
- }
- }
-
-
- /*
- ===============
- R_DrawParticles
- ===============
- */
- void R_DrawParticles (void)
- {
- particle_t *p, *kill;
- float grav;
- int i;
- float time2, time3;
- float time1;
- float dvel;
- float frametime;
- #ifdef GLQUAKE
- unsigned char *at;
- unsigned char theAlpha;
- vec3_t up, right;
- float scale;
- qboolean alphaTestEnabled;
-
- GL_Bind(particletexture);
- alphaTestEnabled = glIsEnabled(GL_ALPHA_TEST);
-
- if (alphaTestEnabled)
- glDisable(GL_ALPHA_TEST);
- glEnable (GL_BLEND);
- glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
- glBegin (GL_TRIANGLES);
-
- VectorScale (vup, 1.5, up);
- VectorScale (vright, 1.5, right);
- #else
- D_StartParticles ();
-
- VectorScale (vright, xscaleshrink, r_pright);
- VectorScale (vup, yscaleshrink, r_pup);
- VectorCopy (vpn, r_ppn);
- #endif
-
- frametime = host_frametime;
- time3 = frametime * 15;
- time2 = frametime * 10; // 15;
- time1 = frametime * 5;
- grav = frametime * 800 * 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;
- }
-
- #ifdef GLQUAKE
- // 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;
- else
- scale = 1 + scale * 0.004;
- at = (byte *)&d_8to24table[(int)p->color];
- if (p->type==pt_fire)
- theAlpha = 255*(6-p->ramp)/6;
- // theAlpha = 192;
- // else if (p->type==pt_explode || p->type==pt_explode2)
- // theAlpha = 255*(8-p->ramp)/8;
- else
- theAlpha = 255;
- glColor4ub (*at, *(at+1), *(at+2), theAlpha);
- // glColor3ubv (at);
- // glColor3ubv ((byte *)&d_8to24table[(int)p->color]);
- glTexCoord2f (0,0);
- glVertex3fv (p->org);
- glTexCoord2f (1,0);
- glVertex3f (p->org[0] + up[0]*scale, p->org[1] + up[1]*scale, p->org[2] + up[2]*scale);
- glTexCoord2f (0,1);
- glVertex3f (p->org[0] + right[0]*scale, p->org[1] + right[1]*scale, p->org[2] + right[2]*scale);
-
- #else
- D_DrawParticle (p);
- #endif
-
- 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;
- }
- }
-
- #ifdef GLQUAKE
- glEnd ();
- glDisable (GL_BLEND);
- if (alphaTestEnabled)
- glEnable(GL_ALPHA_TEST);
- glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
- #else
- D_EndParticles ();
- #endif
- }
-
-