ref: 76563314d19e01997f1a03bf81c14ccdf6d86300
dir: /qw/r_part.c/
#include <u.h> #include <libc.h> #include <stdio.h> #include "quakedef.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 ("%d 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; D_StartParticles (); VectorScale (vright, xscaleshrink, r_pright); VectorScale (vup, yscaleshrink, r_pup); VectorCopy (vpn, r_ppn); 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; } D_DrawParticle (p); p->org[0] += p->vel[0]*frametime; p->org[1] += p->vel[1]*frametime; p->org[2] += p->vel[2]*frametime; switch (p->type) { case pt_static: break; case pt_fire: p->ramp += time1; if (p->ramp >= 6) p->die = -1; else p->color = ramp3[(int)p->ramp]; p->vel[2] += grav; break; case pt_explode: p->ramp += time2; if (p->ramp >=8) p->die = -1; else p->color = ramp1[(int)p->ramp]; for (i=0 ; i<3 ; i++) p->vel[i] += p->vel[i]*dvel; p->vel[2] -= grav; break; case pt_explode2: p->ramp += time3; if (p->ramp >=8) p->die = -1; else p->color = ramp2[(int)p->ramp]; for (i=0 ; i<3 ; i++) p->vel[i] -= p->vel[i]*frametime; p->vel[2] -= grav; break; case pt_blob: for (i=0 ; i<3 ; i++) p->vel[i] += p->vel[i]*dvel; p->vel[2] -= grav; break; case pt_blob2: for (i=0 ; i<2 ; i++) p->vel[i] -= p->vel[i]*dvel; p->vel[2] -= grav; break; case pt_slowgrav: case pt_grav: p->vel[2] -= grav; break; } } D_EndParticles (); }