87 lines
2.2 KiB
C#
87 lines
2.2 KiB
C#
#if CSHARP_7_OR_LATER || (UNITY_2018_3_OR_NEWER && (NET_STANDARD_2_0 || NET_4_6))
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#pragma warning disable CS1591 // Missing XML comment for publicly visible type or member
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using System.Threading;
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using UnityEngine;
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namespace UniRx.Async.Triggers
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{
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public static partial class AsyncTriggerExtensions
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{
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public static AsyncStartTrigger GetAsyncStartTrigger(this GameObject gameObject)
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{
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return GetOrAddComponent<AsyncStartTrigger>(gameObject);
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}
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public static AsyncStartTrigger GetAsyncStartTrigger(this Component component)
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{
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return component.gameObject.GetAsyncStartTrigger();
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}
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}
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[DisallowMultipleComponent]
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public class AsyncStartTrigger : MonoBehaviour
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{
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bool awakeCalled = false;
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bool called = false;
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TriggerEvent<AsyncUnit> triggerEvent;
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void Awake()
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{
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awakeCalled = true;
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}
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void Start()
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{
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called = true;
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triggerEvent?.TrySetResult(AsyncUnit.Default);
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triggerEvent = null;
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}
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public UniTask StartAsync()
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{
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if (called) return UniTask.CompletedTask;
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if (!awakeCalled)
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{
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PlayerLoopHelper.AddAction(PlayerLoopTiming.Update, new AwakeMonitor(this));
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}
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if (triggerEvent == null)
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{
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triggerEvent = new TriggerEvent<AsyncUnit>();
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}
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return ((IAsyncOneShotTrigger)new AsyncTriggerHandler<AsyncUnit>(triggerEvent, true)).OneShotAsync();
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}
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private void OnDestroy()
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{
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triggerEvent?.TrySetCanceled(CancellationToken.None);
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}
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class AwakeMonitor : IPlayerLoopItem
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{
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readonly AsyncStartTrigger trigger;
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public AwakeMonitor(AsyncStartTrigger trigger)
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{
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this.trigger = trigger;
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}
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public bool MoveNext()
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{
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if (trigger.called) return false;
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if (trigger == null)
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{
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trigger.OnDestroy();
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return false;
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}
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return true;
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}
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}
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}
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}
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#endif |