the walls can now scale to the resolution

but the paddles and score text stay where they are. i plan on adding the paddles and score text moving later.

Scenes/Objects/Walls.tscn

@@ -1,6 +1,7 @@
-[gd_scene load_steps=8 format=3 uid="uid://b1787fyse1y6m"]
+[gd_scene load_steps=9 format=3 uid="uid://cmk6ierwi7sdt"]
 
-[ext_resource type="Script" path="res://Scripts/Managers/Walls.cs" id="1_mxer2"]
+[ext_resource type="Script" path="res://Scripts/Managers/WallScalingManager.cs" id="1_mrl25"]
+[ext_resource type="Script" path="res://Scripts/Managers/WallCollisionManager.cs" id="1_we5my"]
 
 [sub_resource type="PlaceholderTexture2D" id="PlaceholderTexture2D_f7jy5"]
 size = Vector2(30, 1)
@@ -21,11 +22,12 @@ size = Vector2(1, 30)
 size = Vector2(1, 30)
 
 [node name="Walls" type="Node2D"]
+script = ExtResource("1_mrl25")
 
 [node name="Left" type="Area2D" parent="."]
 position = Vector2(-393, -2)
 scale = Vector2(1, 600)
-script = ExtResource("1_mxer2")
+script = ExtResource("1_we5my")
 PlayerNumber = 1
 
 [node name="Left" type="Sprite2D" parent="Left"]
@@ -39,7 +41,7 @@ shape = SubResource("RectangleShape2D_1mqst")
 [node name="Right" type="Area2D" parent="."]
 position = Vector2(393, -2)
 scale = Vector2(1, 600)
-script = ExtResource("1_mxer2")
+script = ExtResource("1_we5my")
 
 [node name="Right" type="Sprite2D" parent="Right"]
 position = Vector2(2.08165e-12, 2.08165e-12)

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" uid="uid://b1787fyse1y6m" path="res://Scenes/Objects/Walls.tscn" id="3_jfis7"]
+[ext_resource type="PackedScene" uid="uid://cmk6ierwi7sdt" 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"]
@@ -17,7 +17,6 @@ position = Vector2(-350, 0)
 _moveSpeed = 50.0
 
 [node name="Camera2D" type="Camera2D" parent="."]
-position = Vector2(0, -2)
 
 [node name="Ball" parent="." instance=ExtResource("2_u2ksv")]
 _ballSpeed = 50.0

Scripts/Constants.cs

@@ -6,4 +6,10 @@ public static class Constants
 	/// a constant representing 1 Meter in pixels.
 	/// </summary>
 	internal const double Meter = 10;
+
+	/// <summary>
+	/// the extents (half of the size) of the pixel size of either the width for the vertical walls,
+	/// or the height for the horizontal walls.
+	/// </summary>
+	internal const long WallSizeExtents = 15;
 }

Scripts/Managers/WallCollisionManager.cs

@@ -4,7 +4,7 @@ using Pong.Scripts.Objects;
 
 namespace Pong.Scripts.Managers;
 
-public partial class Walls : Area2D
+public partial class WallCollisionManager : Area2D
 {
 	[Export] internal PlayerNumber PlayerNumber;
 

Scripts/Managers/WallScalingManager.cs

@@ -0,0 +1,60 @@
+using Godot;
+
+namespace Pong.Scripts.Managers;
+
+public partial class WallScalingManager : Node
+{
+	private Area2D _leftWall;
+	private Area2D _rightWall;
+	private StaticBody2D _topWall;
+	private StaticBody2D _bottomWall;
+
+	private Vector2I _gameResolution;
+
+	private void GetNodes()
+	{
+		_leftWall = GetNode<Area2D>("Left");
+		_rightWall = GetNode<Area2D>("Right");
+		_topWall = GetNode<StaticBody2D>("Top");
+		_bottomWall = GetNode<StaticBody2D>("Bottom");
+	}
+
+	public override void _EnterTree()
+	{
+		GetNodes();
+		GetTree().Root.SizeChanged += AdaptToGameResolution;
+		AdaptToGameResolution();
+	}
+
+	public override void _ExitTree()
+	{
+		GetTree().Root.SizeChanged -= AdaptToGameResolution;
+	}
+
+	private void AdaptToGameResolution()
+	{
+		_gameResolution = DisplayServer.WindowGetSize();
+		SetWallPosition(CalculateEdgePosition(_gameResolution));
+	}
+
+	private static Vector2 CalculateEdgePosition(Vector2 resolution)
+	{
+		return new Vector2(resolution.X / 2, resolution.Y / 2);
+	}
+
+	private void SetWallPosition(Vector2 edgePosition)
+	{
+		var xSize = edgePosition.X - Constants.WallSizeExtents;
+		var ySize = edgePosition.Y - Constants.WallSizeExtents;
+		
+		_leftWall.Position = new Vector2(-xSize, 0);
+		_rightWall.Position = new Vector2(xSize, 0);
+		_topWall.Position = new Vector2(0, -ySize);
+		_bottomWall.Position = new Vector2(0, ySize);
+
+		_leftWall.Scale = _leftWall.Scale with { Y = _gameResolution.Y };
+		_rightWall.Scale = _rightWall.Scale with { Y = _gameResolution.Y };
+		_topWall.Scale = _topWall.Scale with { X = _gameResolution.X - 60 };
+		_bottomWall.Scale = _bottomWall.Scale with { X = _gameResolution.X - 60 };
+	}
+}