82 lines
3.1 KiB
C#
82 lines
3.1 KiB
C#
using Syntriax.Engine.Core;
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using Syntriax.Engine.Core.Abstract;
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using Syntriax.Engine.Physics2D.Abstract;
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namespace Syntriax.Engine.Physics2D;
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public abstract class Collider2DBehaviourBase : BehaviourOverride, ICollider2D
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{
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public event ICollider2D.OnCollisionDetectedDelegate? OnCollisionDetected = null;
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public event ICollider2D.OnCollisionResolvedDelegate? OnCollisionResolved = null;
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public event ICollider2D.OnTriggeredDelegate? OnTriggered = null;
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protected bool NeedsRecalculation { get; private set; } = true;
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protected IRigidBody2D? _rigidBody2D = null;
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public IRigidBody2D? RigidBody2D => _rigidBody2D;
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public bool IsTrigger { get; set; } = false;
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ITransform IAssignableTransform.Transform => Transform;
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public event IAssignableTransform.OnTransformAssignedDelegate? OnTransformAssigned { add => GameObject.OnTransformAssigned += value; remove => GameObject.OnTransformAssigned -= value; }
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bool IAssignableTransform.Assign(ITransform transform) => GameObject.Assign(transform);
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public void Recalculate()
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{
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if (!NeedsRecalculation)
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return;
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CalculateCollider();
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NeedsRecalculation = false;
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}
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public abstract void CalculateCollider();
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protected override void OnInitialize()
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{
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BehaviourController.TryGetBehaviourInParent(out _rigidBody2D);
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BehaviourController.OnBehaviourAdded += OnBehaviourAddedToController;
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BehaviourController.OnBehaviourRemoved += OnBehaviourRemovedFromController;
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Transform.OnPositionChanged += SetNeedsRecalculation;
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Transform.OnRotationChanged += SetNeedsRecalculation;
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Transform.OnScaleChanged += SetNeedsRecalculation;
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Transform.OnParentChanged += UpdateRigidBody2D;
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}
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private void UpdateRigidBody2D(ITransform _1, ITransform? _2)
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{
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BehaviourController.TryGetBehaviourInParent(out _rigidBody2D);
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}
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private void OnBehaviourAddedToController(IBehaviourController _, IBehaviour behaviour)
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{
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if (behaviour is IRigidBody2D rigidBody)
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_rigidBody2D = rigidBody;
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}
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private void OnBehaviourRemovedFromController(IBehaviourController _, IBehaviour behaviour)
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{
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if (behaviour is IRigidBody2D _)
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_rigidBody2D = null;
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}
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private void SetNeedsRecalculation(ITransform transform) => NeedsRecalculation = true;
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protected override void OnFinalize()
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{
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BehaviourController.OnBehaviourAdded -= OnBehaviourAddedToController;
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BehaviourController.OnBehaviourRemoved -= OnBehaviourRemovedFromController;
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Transform.OnScaleChanged -= SetNeedsRecalculation;
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Transform.OnPositionChanged -= SetNeedsRecalculation;
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Transform.OnRotationChanged -= SetNeedsRecalculation;
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}
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public void Detect(CollisionDetectionInformation collisionDetectionInformation) => OnCollisionDetected?.Invoke(this, collisionDetectionInformation);
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public void Resolve(CollisionDetectionInformation collisionDetectionInformation) => OnCollisionResolved?.Invoke(this, collisionDetectionInformation);
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public void Trigger(ICollider2D initiator) => OnTriggered?.Invoke(this, initiator);
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}
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