optimize memory allocations

i made the allocations of objects go down a lot. which is cool :3!

Scenes/Objects/Walls.tscn

@@ -1,4 +1,4 @@
-[gd_scene load_steps=8 format=3]
+[gd_scene load_steps=8 format=3 uid="uid://b1787fyse1y6m"]
 
 [ext_resource type="Script" path="res://Scripts/Managers/Walls.cs" id="1_mxer2"]
 

Scenes/Pong.tscn

@@ -4,7 +4,7 @@
 [ext_resource type="Script" path="res://Scripts/Managers/PongSceneManager.cs" id="1_ee533"]
 [ext_resource type="PackedScene" uid="uid://clsmrwvyrt7av" path="res://Scenes/UI/Score.tscn" id="2_f3jwj"]
 [ext_resource type="PackedScene" path="res://Scenes/Objects/Ball.tscn" id="2_u2ksv"]
-[ext_resource type="PackedScene" path="res://Scenes/Objects/Walls.tscn" id="3_jfis7"]
+[ext_resource type="PackedScene" uid="uid://b1787fyse1y6m" path="res://Scenes/Objects/Walls.tscn" id="3_jfis7"]
 [ext_resource type="PackedScene" path="res://Scenes/Objects/Enemy.tscn" id="4_uwvof"]
 
 [node name="Pong" type="Node2D"]

Scripts/Managers/PongSceneManager.cs

@@ -4,9 +4,11 @@ namespace Pong.Scripts.Managers;
 
 public partial class PongSceneManager : Node2D
 {
+	private readonly StringName _reloadAction = new("scene_reload");
+
 	public override void _Process(double delta)
 	{
-		if (Input.IsActionJustPressed("scene_reload"))
+		if (Input.IsActionJustPressed(_reloadAction))
 		{
 			GetTree().ReloadCurrentScene();
 		}

Scripts/Managers/Walls.cs

@@ -36,7 +36,7 @@ public partial class Walls : Area2D
 	{
 		ball.Velocity = Vector2.Zero;
 		ball.Position = Vector2.Zero;
-		await ToSignal(GetTree().CreateTimer(0.25), "timeout");
+		await ToSignal(GetTree().CreateTimer(0.25), SceneTreeTimer.SignalName.Timeout);
 		ball.FlickBall();
 	}
 }

Scripts/Objects/Enemy.cs

@@ -11,16 +11,26 @@ public partial class Enemy : RigidBody2D
 	/// draw shapes to the screen (like <see cref="_scanArea"/>).
 	/// </summary>
 	[Export] private bool _drawDebugShapes;
-
 	[Export] private double _moveSpeed;
 
 	private CollisionShape2D _collisionShape;
 	private Rect2 _scanArea;
 	
+	private PhysicsDirectSpaceState2D _spaceState;
+	private readonly Variant _collider = "collider";
+	private PhysicsShapeQueryParameters2D _query;
+
 	public override void _Ready()
 	{
 		_collisionShape = GetNode<CollisionShape2D>("CollisionShape2D");
 		GenerateCastArea();
+		
+		_spaceState = GetWorld2D().DirectSpaceState;
+		_query = new PhysicsShapeQueryParameters2D
+		{
+			Shape = new RectangleShape2D { Size = _scanArea.Size },
+			Exclude = new Array<Rid>(new[] { GetRid() })
+		};
 	}
 
 	public override void _PhysicsProcess(double delta)
@@ -36,15 +46,7 @@ public partial class Enemy : RigidBody2D
 
 	private void Scan(double delta)
 	{
-		using var spaceState = GetWorld2D().DirectSpaceState;
+		var result = _spaceState.IntersectShape(_query);
-
-		using var query = new PhysicsShapeQueryParameters2D
-		{
-			Shape = new RectangleShape2D { Size = _scanArea.Size },
-			Exclude = new Array<Rid>(new[] { GetRid() })
-		};
-
-		var result = spaceState.IntersectShape(query);
 
 		if (result.Count <= 0)
 		{
@@ -65,7 +67,7 @@ public partial class Enemy : RigidBody2D
 	private void TrackBall(double delta, IReadOnlyList<Dictionary> result)
 	{
 		// checks if the collider is a ball, if not, return.
-		if (result[0]["collider"].As<Objects.Ball>() is not { } ball) return;
+		if (result[0][_collider].As<Ball>() is not { } ball) return;
 
 		// gets the sign of the distance between the ball and the paddle on the y axis
 		var normalisedDistance = new Vector2 { Y = Mathf.Sign(ball.Position.Y - Position.Y) };

Scripts/Objects/Paddle.cs

@@ -7,6 +7,8 @@ public partial class Paddle : RigidBody2D
 	[Export] private double _moveSpeed;
 	
 	private double _verticalInput;
+	private readonly StringName _paddleUp = "paddle_up";
+	private readonly StringName _paddleDown = "paddle_down";
 
 	/// <summary>
 	/// property that multiples the moveSpeed by the <see cref="Constants.Meter">Meter</see> constant.
@@ -27,14 +29,14 @@ public partial class Paddle : RigidBody2D
 	/// a method that returns a number that represents input on the vertical axis.
 	/// </summary>
 	/// <returns>1 for up, -1 for down, 0 for nothing.</returns>
-	private static double GetVerticalInput()
+	private double GetVerticalInput()
 	{
-		if (Input.IsActionPressed("paddle_up"))
+		if (Input.IsActionPressed(_paddleUp))
 		{
 			return 1;
 		}
 
-		if (Input.IsActionPressed("paddle_down"))
+		if (Input.IsActionPressed(_paddleDown))
 		{
 			return -1;
 		}