diff options
author | Vito Caputo <vcaputo@gnugeneration.com> | 2017-01-18 17:14:52 -0800 |
---|---|---|
committer | Vito Caputo <vcaputo@gnugeneration.com> | 2017-01-18 17:31:44 -0800 |
commit | 524db0cf19648e3c7c78d3e73103b7a0bdcd6bfc (patch) | |
tree | 6fd682629904a210927797c92d956c208666b03a /modules/sparkler/simple.c | |
parent | ee2073d4e411555aba878277131b56f7eb562c84 (diff) |
*: move source into src/ subdir
Restoring some organizational sanity since adopting autotools.
Diffstat (limited to 'modules/sparkler/simple.c')
-rw-r--r-- | modules/sparkler/simple.c | 113 |
1 files changed, 0 insertions, 113 deletions
diff --git a/modules/sparkler/simple.c b/modules/sparkler/simple.c deleted file mode 100644 index e453e46..0000000 --- a/modules/sparkler/simple.c +++ /dev/null @@ -1,113 +0,0 @@ -#include <stdlib.h> - -#include "draw.h" -#include "particle.h" -#include "particles.h" - - -/* a "simple" particle type */ -#define SIMPLE_MAX_DECAY_RATE 20 -#define SIMPLE_MIN_DECAY_RATE 2 -#define SIMPLE_MAX_LIFETIME 110 -#define SIMPLE_MIN_LIFETIME 30 -#define SIMPLE_MAX_SPAWN 15 -#define SIMPLE_MIN_SPAWN 2 - -extern particle_ops_t rocket_ops; - -typedef struct _simple_ctxt_t { - int decay_rate; - int longevity; - int lifetime; -} simple_ctxt_t; - - -static int simple_init(particles_t *particles, particle_t *p) -{ - simple_ctxt_t *ctxt = p->ctxt; - - ctxt->decay_rate = rand_within_range(SIMPLE_MIN_DECAY_RATE, SIMPLE_MAX_DECAY_RATE); - ctxt->lifetime = ctxt->longevity = rand_within_range(SIMPLE_MIN_LIFETIME, SIMPLE_MAX_LIFETIME); - - if (!p->props->of_use) { - /* everything starts from the bottom center */ - p->props->position.x = 0; - p->props->position.y = 0; - p->props->position.z = 0; - - /* TODO: direction random-ish within the range of a narrow upward facing cone */ - p->props->direction.x = (float)(rand_within_range(0, 6) - 3) * .1f; - p->props->direction.y = 1.0f + (float)(rand_within_range(0, 6) - 3) * .1f; - p->props->direction.z = (float)(rand_within_range(0, 6) - 3) * .1f; - p->props->direction = v3f_normalize(&p->props->direction); - - p->props->velocity = (float)rand_within_range(300, 800) / 100000.0; - - p->props->drag = 0.03; - p->props->mass = 0.3; - p->props->of_use = 1; - } /* else { we've been given properties, manipulate them or run with them? } */ - - return 1; -} - - -static particle_status_t simple_sim(particles_t *particles, particle_t *p) -{ - simple_ctxt_t *ctxt = p->ctxt; - - /* a particle is free to manipulate its children list when aging, but not itself or its siblings */ - /* return PARTICLE_DEAD to remove kill yourself, do not age children here, the age pass will recurse - * into children and age them independently _after_ their parents have been aged - */ - if (!ctxt->longevity || (ctxt->longevity -= ctxt->decay_rate) <= 0) { - ctxt->longevity = 0; - return PARTICLE_DEAD; - } - - /* create particles inheriting our type based on some silly conditions, with some tweaks to their direction */ - if (ctxt->longevity == 42 || (ctxt->longevity > 500 && !(ctxt->longevity % 50))) { - int i, num = rand_within_range(SIMPLE_MIN_SPAWN, SIMPLE_MAX_SPAWN); - - for (i = 0; i < num; i++) { - particle_props_t props = *p->props; - particle_ops_t *ops = INHERIT_OPS; - - if (i == (SIMPLE_MAX_SPAWN - 2)) { - ops = &rocket_ops; - props.velocity = (float)rand_within_range(60, 100) / 1000000.0; - } else { - props.velocity = (float)rand_within_range(30, 100) / 10000.0; - } - - props.direction.x += (float)(rand_within_range(0, 315 * 2) - 315) / 100.0; - props.direction.y += (float)(rand_within_range(0, 315 * 2) - 315) / 100.0; - props.direction.z += (float)(rand_within_range(0, 315 * 2) - 315) / 100.0; - props.direction = v3f_normalize(&props.direction); - - particles_spawn_particle(particles, p, &props, ops); // XXX - } - } - - return PARTICLE_ALIVE; -} - - -static void simple_draw(particles_t *particles, particle_t *p, int x, int y, fb_fragment_t *f) -{ - simple_ctxt_t *ctxt = p->ctxt; - - if (!draw_pixel(f, x, y, makergb(0xff, 0xff, 0xff, ((float)ctxt->longevity / ctxt->lifetime)))) { - /* immediately kill off stars that wander off screen */ - ctxt->longevity = 0; - } -} - - -particle_ops_t simple_ops = { - .context_size = sizeof(simple_ctxt_t), - .sim = simple_sim, - .init = simple_init, - .draw = simple_draw, - .cleanup = NULL, - }; |