57 lines
2.5 KiB
C#
57 lines
2.5 KiB
C#
namespace Engine.Core.Internal;
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[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]
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/// <summary>
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/// This behaviour can be used for core managers like <see cref="UpdateManager"/> etc. which need to be able to work even
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/// in a very bare minimum setup without the presence of <see cref="UniverseEntranceManager"/> to set themselves up on universe entrance.
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/// I recommend not using this unless you know what you are doing but it might come in handy for some use cases.
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/// </summary>
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public abstract class BehaviourIndependent : Behaviour
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{
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private readonly Event<IUniverseObject, IUniverseObject.EnteredUniverseArguments>.EventHandler delegateEnteredUniverse = null!;
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private readonly Event<IUniverseObject, IUniverseObject.ExitedUniverseArguments>.EventHandler delegateExitedUniverse = null!;
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public BehaviourIndependent()
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{
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OnInitialized.AddListener(OnInitialize);
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OnFinalized.AddListener(OnFinalize);
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OnUnassigned.AddListener(OnUnassign);
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delegateEnteredUniverse = EnteredUniverse;
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delegateExitedUniverse = ExitedUniverse;
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}
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protected virtual void OnUnassign() { }
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protected void OnUnassign(IAssignable assignable) => OnUnassign();
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protected virtual void OnInitialize() { }
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protected void OnInitialize(IInitializable _)
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{
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BehaviourController.UniverseObject.OnEnteredUniverse.AddListener(delegateEnteredUniverse);
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BehaviourController.UniverseObject.OnExitedUniverse.AddListener(delegateExitedUniverse);
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OnInitialize();
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if (UniverseObject.IsInUniverse)
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EnteredUniverse(UniverseObject, new(Universe));
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}
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protected virtual void OnFinalize() { }
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protected void OnFinalize(IInitializable _)
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{
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BehaviourController.UniverseObject.OnEnteredUniverse.RemoveListener(delegateEnteredUniverse);
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BehaviourController.UniverseObject.OnExitedUniverse.RemoveListener(delegateExitedUniverse);
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OnFinalize();
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if (UniverseObject.IsInUniverse)
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ExitedUniverse(UniverseObject, new(Universe));
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}
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protected virtual void OnEnteredUniverse(IUniverse universe) { }
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protected void EnteredUniverse(IUniverseObject sender, IUniverseObject.EnteredUniverseArguments args) => OnEnteredUniverse(args.Universe);
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protected virtual void OnExitedUniverse(IUniverse universe) { }
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protected void ExitedUniverse(IUniverseObject sender, IUniverseObject.ExitedUniverseArguments args) => OnExitedUniverse(args.Universe);
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}
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