144 lines
4.0 KiB
C#

namespace Syntriax.Engine.Core;
public abstract class Behaviour : BehaviourBase, IFirstFrameUpdate,
IPreUpdate, IUpdate, IPostUpdate,
IPreDraw, IDraw, IPostDraw
{
private readonly Event<IUniverseObject, IUniverseObject.EnteredUniverseArguments>.EventHandler delegateEnteredUniverse = null!;
private readonly Event<IUniverseObject, IUniverseObject.ExitedUniverseArguments>.EventHandler delegateExitedUniverse = null!;
public Behaviour()
{
OnInitialized.AddListener(OnInitialize);
OnFinalized.AddListener(OnFinalize);
OnUnassigned.AddListener(OnUnassign);
delegateEnteredUniverse = EnteredUniverse;
delegateExitedUniverse = ExitedUniverse;
}
protected virtual void OnUnassign() { }
protected virtual void OnUnassign(IAssignable assignable) => OnUnassign();
protected virtual void OnInitialize() { }
protected virtual void OnInitialize(IInitializable _)
{
BehaviourController.UniverseObject.OnEnteredUniverse.AddListener(delegateEnteredUniverse);
BehaviourController.UniverseObject.OnExitedUniverse.AddListener(delegateExitedUniverse);
OnInitialize();
if (UniverseObject.IsInUniverse)
EnteredUniverse(UniverseObject, new(Universe));
}
protected virtual void OnFinalize() { }
protected virtual void OnFinalize(IInitializable _)
{
BehaviourController.UniverseObject.OnEnteredUniverse.RemoveListener(delegateEnteredUniverse);
BehaviourController.UniverseObject.OnExitedUniverse.RemoveListener(delegateExitedUniverse);
OnFinalize();
if (UniverseObject.IsInUniverse)
ExitedUniverse(UniverseObject, new(Universe));
}
protected virtual void OnFirstActiveFrame() { }
void IFirstFrameUpdate.FirstActiveFrame()
{
Debug.Assert.AssertInitialized(this);
OnFirstActiveFrame();
}
protected virtual void OnPreUpdatePreActiveCheck() { }
protected virtual void OnPreUpdate() { }
void IPreUpdate.PreUpdate()
{
Debug.Assert.AssertInitialized(this);
OnPreUpdatePreActiveCheck();
if (!IsActive)
return;
OnPreUpdate();
}
protected virtual void OnUpdatePreActiveCheck() { }
protected virtual void OnUpdate() { }
void IUpdate.Update()
{
Debug.Assert.AssertInitialized(this);
OnUpdatePreActiveCheck();
if (!IsActive)
return;
OnUpdate();
}
protected virtual void OnPostUpdatePreActiveCheck() { }
protected virtual void OnPostUpdate() { }
void IPostUpdate.PostUpdate()
{
Debug.Assert.AssertInitialized(this);
OnPostUpdatePreActiveCheck();
if (!StateEnable.Enabled)
return;
OnPostUpdate();
}
protected virtual void OnPreDrawPreActiveCheck() { }
protected virtual void OnPreDraw() { }
void IPreDraw.PreDraw()
{
Debug.Assert.AssertInitialized(this);
OnPreDrawPreActiveCheck();
if (!StateEnable.Enabled)
return;
OnPreDraw();
}
protected virtual void OnDrawPreActiveCheck() { }
protected virtual void OnDraw() { }
void IDraw.Draw()
{
Debug.Assert.AssertInitialized(this);
OnDrawPreActiveCheck();
if (!StateEnable.Enabled)
return;
OnDraw();
}
protected virtual void OnPostDrawPreActiveCheck() { }
protected virtual void OnPostDraw() { }
void IPostDraw.PostDraw()
{
Debug.Assert.AssertInitialized(this);
OnPostDrawPreActiveCheck();
if (!StateEnable.Enabled)
return;
OnPostDraw();
}
protected virtual void OnEnteredUniverse(IUniverse universe) { }
protected virtual void EnteredUniverse(IUniverseObject sender, IUniverseObject.EnteredUniverseArguments args) => OnEnteredUniverse(args.Universe);
protected virtual void OnExitedUniverse(IUniverse universe) { }
protected virtual void ExitedUniverse(IUniverseObject sender, IUniverseObject.ExitedUniverseArguments args) => OnExitedUniverse(args.Universe);
}