From 524db0cf19648e3c7c78d3e73103b7a0bdcd6bfc Mon Sep 17 00:00:00 2001 From: Vito Caputo Date: Wed, 18 Jan 2017 17:14:52 -0800 Subject: *: move source into src/ subdir Restoring some organizational sanity since adopting autotools. --- modules/sparkler/burst.c | 111 ----------------------------------------------- 1 file changed, 111 deletions(-) delete mode 100644 modules/sparkler/burst.c (limited to 'modules/sparkler/burst.c') diff --git a/modules/sparkler/burst.c b/modules/sparkler/burst.c deleted file mode 100644 index 828ca02..0000000 --- a/modules/sparkler/burst.c +++ /dev/null @@ -1,111 +0,0 @@ -#include - -#include "bsp.h" -#include "container.h" -#include "particle.h" -#include "particles.h" - - -/* a "burst" (shockwave) particle type */ -/* this doesn't draw anything, it just pushes neighbors away in an increasing radius */ - -#define BURST_FORCE 0.01f -#define BURST_MAX_LIFETIME 8 - -typedef struct _burst_ctxt_t { - int longevity; - int lifetime; -} burst_ctxt_t; - - -static int burst_init(particles_t *particles, particle_t *p) -{ - burst_ctxt_t *ctxt = p->ctxt; - - ctxt->longevity = ctxt->lifetime = BURST_MAX_LIFETIME; - p->props->velocity = 0; /* burst should be stationary */ - p->props->mass = 0; /* no mass prevents gravity's effects */ - - return 1; -} - - -static inline void thrust_part(particle_t *burst, particle_t *victim, float distance_sq) -{ - v3f_t direction = v3f_sub(&victim->props->position, &burst->props->position); - - /* TODO: normalize is expensive, see about removing these. */ - direction = v3f_normalize(&direction); - victim->props->direction = v3f_add(&victim->props->direction, &direction); - victim->props->direction = v3f_normalize(&victim->props->direction); - - victim->props->velocity += BURST_FORCE; -} - - -typedef struct burst_sphere_t { - particle_t *center; - float radius_min; - float radius_max; -} burst_sphere_t; - - -static void burst_cb(bsp_t *bsp, list_head_t *occupants, void *_s) -{ - burst_sphere_t *s = _s; - bsp_occupant_t *o; - float rmin_sq = s->radius_min * s->radius_min; - float rmax_sq = s->radius_max * s->radius_max; - - /* XXX: to avoid having a callback per-particle, bsp_occupant_t was - * moved to the public particle, and the particle-specific - * implementations directly perform bsp-accelerated searches. Another - * wart caused by this is particles_bsp(). - */ - list_for_each_entry(o, occupants, occupants) { - particle_t *p = container_of(o, particle_t, occupant); - float d_sq; - - if (p == s->center) { - /* leave ourselves alone */ - continue; - } - - d_sq = v3f_distance_sq(&s->center->props->position, &p->props->position); - - if (d_sq > rmin_sq && d_sq < rmax_sq) { - /* displace the part relative to the burst origin */ - thrust_part(s->center, p, d_sq); - } - - } -} - - -static particle_status_t burst_sim(particles_t *particles, particle_t *p) -{ - burst_ctxt_t *ctxt = p->ctxt; - bsp_t *bsp = particles_bsp(particles); /* XXX see note above about bsp_occupant_t */ - burst_sphere_t s; - - if (!ctxt->longevity || (ctxt->longevity--) <= 0) { - return PARTICLE_DEAD; - } - - /* affect neighbors for the shock-wave */ - s.radius_min = (1.0f - ((float)ctxt->longevity / ctxt->lifetime)) * 0.075f; - s.radius_max = s.radius_min + .01f; - s.center = p; - bsp_search_sphere(bsp, &p->props->position, s.radius_min, s.radius_max, burst_cb, &s); - - return PARTICLE_ALIVE; -} - - -particle_ops_t burst_ops = { - .context_size = sizeof(burst_ctxt_t), - .sim = burst_sim, - .init = burst_init, - .draw = NULL, - .cleanup = NULL, - }; -- cgit v1.2.3