diff --git a/src/main.rs b/src/main.rs
index 953454e..78575de 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -33,8 +33,9 @@ fn random_vec(_app: &App) -> nalgebra::Vector2<f32> {
 }
 
 fn fill_particles(app: &App, colliders: &mut ColliderSet, bodies: &mut RigidBodySet) {
+    // Keeping track of already placed balls to avoid overlap
+    // Need to look into a way to do this with rapier directly
     let mut positions: Vec<nalgebra::Vector2<f32>> = Vec::new();
-
     for _ in 0..PARTICLE_COUNT {
         let mut xy = random_vec(app);
         while !positions