implemented 2d collision system

1 files changed, 117 insertions, 0 deletions

diff --git a/src/collision/rodeo_collision.c b/src/collision/rodeo_collision.c
new file mode 100644
index 0000000..8119fb9
--- /dev/null
+++ b/src/collision/rodeo_collision.c
@@ -0,0 +1,117 @@
+#include "rodeo/collision.h"
+#include "rodeo/collision_t.h"
+#include <stdio.h>
+
+bool detect_collision(
+	const rodeo_collision_2d_world_item_t *a,
+	const rodeo_collision_2d_world_item_t *b
+)
+{
+	return !(a->x+a->dx > b->x+b->dx + b->width ||
+			b->x+b->dx > a->x+a->dx + a->width ||
+			a->y+a->dy > b->y+b->dy + b->height ||
+			b->y+b->dy > a->y+a->dy + a->height);
+}
+
+rodeo_collision_2d_world_t
+rodeo_collision_2d_world_create(void)
+{
+	return cvec_collision_2d_world_item_init();
+}
+
+void
+rodeo_collision_2d_world_destroy(
+rodeo_collision_2d_world_t *world
+)
+{
+	cvec_collision_2d_world_item_drop(world);
+}
+
+cvec_collision_2d_world_item_value*
+rodeo_collision_2d_world_item_create(
+	rodeo_collision_2d_world_t *world,
+	rodeo_collision_2d_world_item_t item_params
+)
+{
+	static uint32_t next_id = 0;
+	item_params.id = next_id++;
+	cvec_collision_2d_world_item_value* new_item = cvec_collision_2d_world_item_push(world, item_params);
+	
+	return new_item;
+}
+
+void
+rodeo_collision_2d_world_item_destroy(
+	rodeo_collision_2d_world_t *world,
+	cvec_collision_2d_world_item_value* cvec_value
+)
+{
+	cvec_collision_2d_world_item_value temp = *cvec_collision_2d_world_item_back(world);
+	*cvec_collision_2d_world_item_back(world) = *cvec_value;
+	*cvec_value = temp;
+	cvec_collision_2d_world_item_pop(world);
+}
+
+rodeo_collision_2d_world_item_t*
+rodeo_collision_2d_world_item_get_by_id(
+	rodeo_collision_2d_world_t *world,
+	uint32_t id
+)
+{
+	c_foreach(i, cvec_collision_2d_world_item, *world) {
+		if (i.ref->id == id) {
+			return i.ref;
+		}
+	}
+	return NULL;
+}
+
+void
+rodeo_collision_2d_world_compare_self(
+	rodeo_collision_2d_world_t *world,
+	void (*resolve)(
+		rodeo_collision_2d_world_item_t *a,
+		rodeo_collision_2d_world_item_t *b
+	)
+)
+{
+	c_foreach(i, cvec_collision_2d_world_item, *world) {
+		c_foreach(j, cvec_collision_2d_world_item, cvec_collision_2d_world_item_advance(i, 1), cvec_collision_2d_world_item_end(world)) {
+			if (detect_collision(i.ref, j.ref)) {
+				resolve(i.ref, j.ref);
+			}
+		}
+	}
+}
+
+void
+rodeo_collision_2d_world_compare_other(
+	rodeo_collision_2d_world_t *world_a,
+	rodeo_collision_2d_world_t *world_b,
+	void (*resolve)(
+		rodeo_collision_2d_world_item_t *a,
+		rodeo_collision_2d_world_item_t *b
+	)
+)
+{
+	c_foreach(i, cvec_collision_2d_world_item, *world_a) {
+		c_foreach(j, cvec_collision_2d_world_item, *world_b) {
+			if (detect_collision(i.ref, j.ref)) {
+				resolve(i.ref, j.ref);
+			}
+		}
+	}
+}
+
+
+int rodeo_collision_2d_item_cmp(
+	const rodeo_collision_2d_world_item_t* a,
+	const rodeo_collision_2d_world_item_t* b
+)
+{
+	if (a->id == b->id) {
+		return 0;
+	} else {
+		return a->id > b->id ? 1 : -1;
+	}
+}