feat: Added Player Objects w/ Movement Behaviour

Game/Behaviours/MovementBehaviour.cs

@@ -0,0 +1,56 @@
+using System;
+using Microsoft.Xna.Framework;
+using Microsoft.Xna.Framework.Input;
+using Syntriax.Engine.Core;
+using Syntriax.Engine.Input;
+
+namespace Pong.Behaviours;
+
+public class MovementBehaviour(Keys Up, Keys Down, float Speed) : BehaviourOverride
+{
+    private Keys Up { get; } = Up;
+    private Keys Down { get; } = Down;
+    public float Speed { get; set; } = Speed;
+
+    private bool isUpPressed = false;
+    private bool isDownPressed = false;
+
+    private IKeyboardInputs inputs = null!;
+
+    protected override void OnUpdate(GameTime time)
+    {
+        if (isUpPressed && isDownPressed)
+            return;
+
+        if (isUpPressed)
+            GameObject.Transform.Position = GameObject.Transform.Position + Vector2.UnitY * (float)time.ElapsedGameTime.TotalSeconds * Speed;
+        else if (isDownPressed)
+            GameObject.Transform.Position = GameObject.Transform.Position + -Vector2.UnitY * (float)time.ElapsedGameTime.TotalSeconds * Speed;
+    }
+
+    protected override void OnInitialize()
+    {
+        if (!BehaviourController.TryGetBehaviour(out inputs))
+            throw new Exception($"{nameof(IKeyboardInputs)} is missing on ${GameObject.Name}.");
+
+        inputs.RegisterOnPress(Up, OnUpPressed);
+        inputs.RegisterOnRelease(Up, OnUpReleased);
+
+        inputs.RegisterOnPress(Down, OnDownPressed);
+        inputs.RegisterOnRelease(Down, OnDownReleased);
+    }
+
+    protected override void OnFinalize()
+    {
+        inputs.UnregisterOnPress(Up, OnUpPressed);
+        inputs.UnregisterOnRelease(Up, OnUpReleased);
+
+        inputs.UnregisterOnPress(Down, OnDownPressed);
+        inputs.UnregisterOnRelease(Down, OnDownReleased);
+    }
+
+    private void OnUpPressed(IKeyboardInputs inputs, Keys keys) => isUpPressed = true;
+    private void OnUpReleased(IKeyboardInputs inputs, Keys keys) => isUpPressed = false;
+    private void OnDownPressed(IKeyboardInputs inputs, Keys keys) => isDownPressed = true;
+    private void OnDownReleased(IKeyboardInputs inputs, Keys keys) => isDownPressed = false;
+}