diff options
Diffstat (limited to 'modules/sparkler/rocket.c')
| -rw-r--r-- | modules/sparkler/rocket.c | 144 |
1 files changed, 0 insertions, 144 deletions
diff --git a/modules/sparkler/rocket.c b/modules/sparkler/rocket.c deleted file mode 100644 index 6b9dc5e..0000000 --- a/modules/sparkler/rocket.c +++ /dev/null @@ -1,144 +0,0 @@ -#include <stdlib.h> - -#include "draw.h" -#include "particle.h" -#include "particles.h" - -/* a "rocket" particle type */ -#define ROCKET_MAX_DECAY_RATE 20 -#define ROCKET_MIN_DECAY_RATE 2 -#define ROCKET_MAX_LIFETIME 500 -#define ROCKET_MIN_LIFETIME 300 -#define ROCKETS_MAX 20 -#define ROCKETS_XPLODE_MIN_SIZE 2000 -#define ROCKETS_XPLODE_MAX_SIZE 8000 - -extern particle_ops_t burst_ops; -extern particle_ops_t spark_ops; -extern particle_ops_t xplode_ops; - -static unsigned rockets_cnt; - -typedef struct rocket_ctxt_t { - int decay_rate; - int longevity; - v3f_t wander; - float last_velocity; /* cache velocity to sense violent accelerations and explode when they happen */ -} rocket_ctxt_t; - - -static int rocket_init(particles_t *particles, particle_t *p) -{ - rocket_ctxt_t *ctxt = p->ctxt; - - if (rockets_cnt >= ROCKETS_MAX) { - return 0; - } - rockets_cnt++; - - ctxt->decay_rate = rand_within_range(ROCKET_MIN_DECAY_RATE, ROCKET_MAX_DECAY_RATE); - ctxt->longevity = rand_within_range(ROCKET_MIN_LIFETIME, ROCKET_MAX_LIFETIME); - - ctxt->wander.x = (float)(rand_within_range(0, 628) - 314) / 10000.0f; - ctxt->wander.y = (float)(rand_within_range(0, 628) - 314) / 10000.0f; - ctxt->wander.z = (float)(rand_within_range(0, 628) - 314) / 10000.0f; - ctxt->wander = v3f_normalize(&ctxt->wander); - - ctxt->last_velocity = p->props->velocity; - p->props->drag = 0.4; - p->props->mass = 0.8; - - return 1; -} - - -static particle_status_t rocket_sim(particles_t *particles, particle_t *p) -{ - rocket_ctxt_t *ctxt = p->ctxt; - int i, n_sparks; - - if (!ctxt->longevity || - (ctxt->longevity -= ctxt->decay_rate) <= 0 || - p->props->velocity - ctxt->last_velocity > p->props->velocity * .05) { /* explode if accelerated too hard (burst) */ - int n_xplode; - /* on death we explode */ - - ctxt->longevity = 0; - - /* add a burst shockwave particle at our location - * TODO: need way to supply particle-type-specific parameters at spawn (burst size should derive from n_xplode) - */ - particles_spawn_particle(particles, p, NULL, &burst_ops); - - /* add a bunch of new explosion particles */ - /* TODO: also particle-type-specific parameters, colors! rocket bursts should be able to vary the color. */ - n_xplode = rand_within_range(ROCKETS_XPLODE_MIN_SIZE, ROCKETS_XPLODE_MAX_SIZE); - for (i = 0; i < n_xplode; i++) { - particle_props_t props = *p->props; - particle_ops_t *ops = &xplode_ops; - - props.direction.x = ((float)(rand_within_range(0, 314159 * 2) - 314159) / 100000.0); - props.direction.y = ((float)(rand_within_range(0, 314159 * 2) - 314159) / 100000.0); - props.direction.z = ((float)(rand_within_range(0, 314159 * 2) - 314159) / 100000.0); - props.direction = v3f_normalize(&props.direction); - - //props->velocity = ((float)rand_within_range(100, 200) / 100000.0); - props.velocity = ((float)rand_within_range(100, 300) / 100000.0); - particles_spawn_particle(particles, p, &props, ops); - } - return PARTICLE_DEAD; - } - -#if 1 - /* FIXME: this isn't behaving as intended */ - p->props->direction = v3f_add(&p->props->direction, &ctxt->wander); - p->props->direction = v3f_normalize(&p->props->direction); -#endif - p->props->velocity += .00003; - - /* spray some sparks behind the rocket */ - n_sparks = rand_within_range(10, 40); - for (i = 0; i < n_sparks; i++) { - particle_props_t props = *p->props; - - props.direction = v3f_negate(&props.direction); - - props.direction.x += (float)(rand_within_range(0, 40) - 20) / 100.0; - props.direction.y += (float)(rand_within_range(0, 40) - 20) / 100.0; - props.direction.z += (float)(rand_within_range(0, 40) - 20) / 100.0; - props.direction = v3f_normalize(&props.direction); - - props.velocity = (float)rand_within_range(10, 50) / 100000.0; - particles_spawn_particle(particles, p, &props, &spark_ops); - } - - ctxt->last_velocity = p->props->velocity; - - return PARTICLE_ALIVE; -} - - -static void rocket_draw(particles_t *particles, particle_t *p, int x, int y, fb_fragment_t *f) -{ - rocket_ctxt_t *ctxt = p->ctxt; - - if (!draw_pixel(f, x, y, 0xff0000)) { - /* kill off parts that wander off screen */ - ctxt->longevity = 0; - } -} - - -static void rocket_cleanup(particles_t *particles, particle_t *p) -{ - rockets_cnt--; -} - - -particle_ops_t rocket_ops = { - .context_size = sizeof(rocket_ctxt_t), - .sim = rocket_sim, - .init = rocket_init, - .draw = rocket_draw, - .cleanup = rocket_cleanup, - }; |