73 lines
2.9 KiB
C#
73 lines
2.9 KiB
C#
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using UnityEngine;
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using UnityEngine.AddressableAssets;
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using UnityEngine.ResourceManagement.AsyncOperations;
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#if UNITY_EDITOR
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using UnityEditor;
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#endif
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/// <summary>
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/// Creates an AssetReference that is restricted to having a specific Component.
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/// * This is the class that inherits from AssetReference. It is generic and does not specify which Components it might care about. A concrete child of this class is required for serialization to work.* At edit-time it validates that the asset set on it is a GameObject with the required Component.
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/// * At edit-time it validates that the asset set on it is a GameObject with the required Component.
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/// * At runtime it can load/instantiate the GameObject, then return the desired component. API matches base class (LoadAssetAsync & InstantiateAsync).
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/// </summary>
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/// <typeparam name="TComponent"> The component type.</typeparam>
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public class ComponentReference<TComponent> : AssetReference
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{
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public ComponentReference(string guid) : base(guid)
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{
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}
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public new AsyncOperationHandle<TComponent> InstantiateAsync(Vector3 position, Quaternion rotation, Transform parent = null)
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{
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return Addressables.ResourceManager.CreateChainOperation<TComponent, GameObject>(base.InstantiateAsync(position, Quaternion.identity, parent), GameObjectReady);
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}
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public new AsyncOperationHandle<TComponent> InstantiateAsync(Transform parent = null, bool instantiateInWorldSpace = false)
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{
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return Addressables.ResourceManager.CreateChainOperation<TComponent, GameObject>(base.InstantiateAsync(parent, instantiateInWorldSpace), GameObjectReady);
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}
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public AsyncOperationHandle<TComponent> LoadAssetAsync()
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{
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return Addressables.ResourceManager.CreateChainOperation<TComponent, GameObject>(base.LoadAssetAsync<GameObject>(), GameObjectReady);
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}
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AsyncOperationHandle<TComponent> GameObjectReady(AsyncOperationHandle<GameObject> arg)
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{
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var comp = arg.Result.GetComponent<TComponent>();
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return Addressables.ResourceManager.CreateCompletedOperation<TComponent>(comp, string.Empty);
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}
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public override bool ValidateAsset(Object obj)
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{
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var go = obj as GameObject;
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return go != null && go.GetComponent<TComponent>() != null;
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}
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public override bool ValidateAsset(string path)
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{
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#if UNITY_EDITOR
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//this load can be expensive...
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var go = AssetDatabase.LoadAssetAtPath<GameObject>(path);
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return go != null && go.GetComponent<TComponent>() != null;
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#else
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return false;
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#endif
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}
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public void ReleaseInstance(AsyncOperationHandle<TComponent> op)
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{
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// Release the instance
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var component = op.Result as Component;
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if (component != null)
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{
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Addressables.ReleaseInstance(component.gameObject);
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}
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// Release the handle
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Addressables.Release(op);
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}
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}
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