Engine-Pong/Game/Behaviours/MovementBallBehaviour.cs

using System;
using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Input;
using Syntriax.Engine.Core;
using Syntriax.Engine.Input;
using Syntriax.Engine.Physics2D;
using Syntriax.Engine.Physics2D.Abstract;

namespace Pong.Behaviours;
public class MovementBallBehaviour(Vector2D StartDirection, float Speed) : BehaviourOverride
{
    public Vector2D StartDirection { get; private set; } = Vector2D.Normalize(StartDirection);
    public float Speed { get; set; } = Speed;

    private IRigidBody2D rigidBody = null!;

    protected override void OnFirstActiveFrame()
    {
        if (!BehaviourController.TryGetBehaviour(out IRigidBody2D? foundRigidBody))
            throw new Exception($"{nameof(IRigidBody2D)} is missing on {GameObject.Name}.");
        if (!BehaviourController.TryGetBehaviour(out ICollider2D? foundCollider))
            throw new Exception($"{nameof(ICollider2D)} is missing on {GameObject.Name}.");

        foundRigidBody.Velocity = StartDirection * Speed;
        foundCollider.OnCollisionDetected += OnCollisionDetected;

        rigidBody = foundRigidBody;
    }

    private void OnCollisionDetected(ICollider2D collider2D, CollisionDetectionInformation information)
    {
        rigidBody.Velocity = rigidBody.Velocity.Reflect(information.Normal);
    }

    // protected override void OnUpdate(GameTime time)
    // {
    //     GameObject.Transform.Position += StartDirection * (time.ElapsedGameTime.Nanoseconds * .001f) * Speed;

    //     float absY = MathF.Abs(GameObject.Transform.Position.Y);
    //     float differenceY = absY - PlayAreaBehaviour.PlayArea.Y * 0.5f;
    //     if (differenceY > 0f)
    //     {
    //         if (GameObject.Transform.Position.Y > 0f)
    //             GameObject.Transform.Position -= Vector2.UnitY * differenceY * 2f;
    //         else
    //             GameObject.Transform.Position += Vector2.UnitY * differenceY * 2f;

    //         StartDirection = new(StartDirection.X, -StartDirection.Y);
    //     }

    //     float absX = MathF.Abs(GameObject.Transform.Position.X);
    //     float differenceX = absX - PlayAreaBehaviour.PlayArea.X * 0.5f;
    //     if (differenceX > 0f)
    //     {
    //         if (GameObject.Transform.Position.X > 0f)
    //             GameObject.Transform.Position -= Vector2.UnitX * differenceX * 2f;
    //         else
    //             GameObject.Transform.Position += Vector2.UnitX * differenceX * 2f;

    //         StartDirection = new(-StartDirection.X, StartDirection.Y);
    //     }
    // }
}