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authorVito Caputo <vcaputo@pengaru.com>2017-04-26 16:31:48 -0700
committerVito Caputo <vcaputo@pengaru.com>2017-04-26 16:32:28 -0700
commit3e2d1db3952e65e347faf496800ede12231c3b76 (patch)
tree0e6fab1e0f6fde27fc456c5d2f76e4005dbb9c41 /src/modules/sparkler
parent9f499b0590b1a7d56c36ec5d093e82795c3aba19 (diff)
sparkler: utilize context struct for module state
Diffstat (limited to 'src/modules/sparkler')
-rw-r--r--src/modules/sparkler/sparkler.c54
1 files changed, 43 insertions, 11 deletions
diff --git a/src/modules/sparkler/sparkler.c b/src/modules/sparkler/sparkler.c
index deb3c53..6d8d354 100644
--- a/src/modules/sparkler/sparkler.c
+++ b/src/modules/sparkler/sparkler.c
@@ -16,35 +16,67 @@
#define INIT_PARTS 100
+typedef struct sparkler_context_t {
+ particles_t *particles;
+} sparkler_context_t;
+
extern particle_ops_t simple_ops;
-/* Render a 3D particle system */
-static void sparkler_render_fragment(void *context, fb_fragment_t *fragment)
+static void * sparkler_create_context(void)
{
- static particles_t *particles;
static int initialized;
- uint32_t *buf = fragment->buf;
+ sparkler_context_t *ctxt;
if (!initialized) {
srand(time(NULL) + getpid());
+ initialized = 1;
+ }
- particles = particles_new();
- particles_add_particles(particles, NULL, &simple_ops, INIT_PARTS);
+ ctxt = calloc(1, sizeof(sparkler_context_t));
+ if (!ctxt)
+ return NULL;
- initialized = 1;
+ ctxt->particles = particles_new();
+ if (!ctxt->particles) {
+ free(ctxt);
+ return NULL;
}
+ particles_add_particles(ctxt->particles, NULL, &simple_ops, INIT_PARTS);
+
+ return ctxt;
+}
+
+
+static void sparkler_destroy_context(void *context)
+{
+ sparkler_context_t *ctxt = context;
+
+ particles_free(ctxt->particles);
+ free(ctxt);
+}
+
+
+/* Render a 3D particle system */
+static void sparkler_render_fragment(void *context, fb_fragment_t *fragment)
+{
+ sparkler_context_t *ctxt = context;
+ uint32_t *buf = fragment->buf;
+
+
fb_fragment_zero(fragment);
- particles_age(particles);
- particles_draw(particles, fragment);
- particles_sim(particles);
- particles_add_particles(particles, NULL, &simple_ops, INIT_PARTS / 4);
+ particles_age(ctxt->particles);
+ particles_draw(ctxt->particles, fragment);
+ particles_sim(ctxt->particles);
+ particles_add_particles(ctxt->particles, NULL, &simple_ops, INIT_PARTS / 4);
}
rototiller_module_t sparkler_module = {
+ .create_context = sparkler_create_context,
+ .destroy_context = sparkler_destroy_context,
.render_fragment = sparkler_render_fragment,
.name = "sparkler",
.description = "Particle system with spatial interactions",
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