first commit

src/engine/circle.c

@@ -0,0 +1,42 @@
+#include "circle.h"
+
+bool
+circle_collide_check(Circle* a, Circle* b)
+{
+        f32 sum;
+        f32 distance;
+
+        distance = DISTANCE_2D
+        (
+        	a->position[0],
+                b->position[0],
+        	a->position[1],
+                b->position[1]
+        );
+
+        sum = a->radius + b->radius;
+
+        if (distance < sum)
+                return true;
+
+        return false;
+}
+
+bool
+circle_has_point_check(Circle* self, vec2 point)
+{
+	f32 distance;
+
+	distance = DISTANCE_2D
+	(
+		point[0],
+		self->position[0],
+		point[1],
+		self->position[1]
+	);
+
+	if (distance <= self->radius)
+		return true;
+
+	return false;
+}