Syntriax.Engine/Engine.Physics2D/Collider2DBehaviourBase.cs

using System;

using Syntriax.Engine.Core;
using Syntriax.Engine.Core.Abstract;
using Syntriax.Engine.Physics2D.Abstract;

namespace Syntriax.Engine.Physics2D;

public abstract class Collider2DBehaviourBase : BehaviourOverride, ICollider2D
{
    public Action<ICollider2D, ICollider2D>? OnCollisionPreResolve { get; set; } = null;
    public Action<ICollider2D, ICollider2D>? OnCollisionResolved { get; set; } = null;


    protected IRigidBody2D? _rigidBody2D = null;


    public IRigidBody2D? RigidBody2D => _rigidBody2D;

    ITransform IAssignableTransform.Transform => Transform;
    Action<IAssignableTransform>? IAssignableTransform.OnTransformAssigned { get => GameObject.OnTransformAssigned; set => GameObject.OnTransformAssigned = value; }
    bool IAssignableTransform.Assign(ITransform transform) => GameObject.Assign(transform);

    public abstract void Recalculate();

    protected override void OnInitialize()
    {
        BehaviourController.TryGetBehaviour(out _rigidBody2D);

        BehaviourController.OnBehaviourAdded += OnBehaviourAddedToController;
        BehaviourController.OnBehaviourRemoved += OnBehaviourRemovedFromController;
    }

    private void OnBehaviourAddedToController(IBehaviourController _, IBehaviour behaviour)
    {
        if (behaviour is IRigidBody2D rigidbody)
            _rigidBody2D = rigidbody;
    }

    private void OnBehaviourRemovedFromController(IBehaviourController _, IBehaviour behaviour)
    {
        if (behaviour is IRigidBody2D _)
            _rigidBody2D = null;
    }

    protected override void OnFinalize()
    {
        BehaviourController.OnBehaviourAdded -= OnBehaviourAddedToController;
        BehaviourController.OnBehaviourRemoved -= OnBehaviourRemovedFromController; ;
    }
}