Small cleanup, spacing, comments.

src/entity_ball.odin

@@ -31,9 +31,11 @@ update_ball :: proc(ball: ^Entity, level: ^Level, dt: f32) {
    // first check the level timer are we waiting to serve?
    if level.serve_timer > 0 {
         level.serve_timer -= dt
+
         if level.serve_timer <= 0 {
             serve_ball(ball) 
         } 
+
         return
    } 
 

src/game.odin

@@ -36,6 +36,7 @@ game_update :: proc(game: ^Game) {
     input := poll_input()
 
     // Pass direct pointers (^Scene) so modifications persist
+    // only update the overlay, if it currently exists
     if overlay, ok := &game.overlay_scene.?; ok {
         scene_update(overlay, game, input, dt)
     } else {