Document collide args

crates/bevy_sprite/src/collide_aabb.rs

@@ -12,6 +12,8 @@ pub enum Collision {
 
 // TODO: ideally we can remove this once bevy gets a physics system
 /// Axis-aligned bounding box collision with "side" detection
+/// *   a_pos and b_pos are the center position of the rectangles. (this is different to traditional AABB where the position is the corner)
+/// *   a_size and b_size are the width and height of the rectangles.
 pub fn collide(a_pos: Vec3, a_size: Vec2, b_pos: Vec3, b_size: Vec2) -> Option<Collision> {
     let a_min = a_pos.truncate() - a_size / 2.0;
     let a_max = a_pos.truncate() + a_size / 2.0;