80 lines
2.8 KiB
C#
80 lines
2.8 KiB
C#
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namespace AddressableAssets.DocExampleCode
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{
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using System;
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using System.Collections.Generic;
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using Unity.IO.LowLevel.Unsafe;
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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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using UnityEngine.ResourceManagement.ResourceProviders;
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using UnityEngine.SceneManagement;
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using UnityEngine.UIElements;
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internal class UsingUnloadScene
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{
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#region SAMPLE
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// The idea with this sample is to show a simple streaming world. This has 3 events
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// that work to load and unload scenes as required. Load would be triggered when
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// the player gets close to the entrypoint. Activate would be called by doing
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// something like "opening a door". And then unload could be called when the player
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// crosses the entrypoint again in the other direction.
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public class SceneGatewayManager {
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// the Addressables key for the scene to load
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[SerializeField]
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public string sceneKey;
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private AsyncOperationHandle<SceneInstance> sceneHandle;
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public void EnterBoundary()
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{
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if (sceneHandle.IsValid() && sceneHandle.IsDone)
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{
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// do not reload if they have already passed the load boundary
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return;
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}
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// load, but do not activate
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var activateOnLoad = false;
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// the scene is additive to keep our base scene and simply add a new area to it
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sceneHandle = Addressables.LoadSceneAsync(sceneKey, LoadSceneMode.Additive, activateOnLoad);
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}
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public IEnumerator<AsyncOperationHandle<SceneInstance>> EnterScene()
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{
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// at this point we have to finish waiting for the scene to load if it
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// hasn't already
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yield return sceneHandle;
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// this will activate the scene
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sceneHandle.Result.ActivateAsync();
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}
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// exist boundary takes an optional cleanup callback that could be
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// used to cleanup Assets after scene unload
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public void ExitBoundary(Action cleanupCallback = null)
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{
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if (!sceneHandle.Result.Scene.isLoaded)
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{
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// scene has not been activated and cannot be unloaded
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return;
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}
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var unloadHandle = Addressables.UnloadSceneAsync(sceneHandle, UnloadSceneOptions.None);
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unloadHandle.Completed += (s) =>
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{
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if (cleanupCallback != null)
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{
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cleanupCallback();
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}
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};
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}
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}
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#endregion
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}
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}
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