UniRx 에셋 추가

Gameton-06/Assets/Plugins/UniRx/Scripts/UnityEngineBridge/Operators/SampleFrame.cs

@@ -0,0 +1,132 @@
+using System;
+
+#if UniRxLibrary
+using UnityObservable = UniRx.ObservableUnity;
+#else
+using UnityObservable = UniRx.Observable;
+#endif
+
+namespace UniRx.Operators
+{
+    internal class SampleFrameObservable<T> : OperatorObservableBase<T>
+    {
+        readonly IObservable<T> source;
+        readonly int frameCount;
+        readonly FrameCountType frameCountType;
+
+        public SampleFrameObservable(IObservable<T> source, int frameCount, FrameCountType frameCountType) : base(source.IsRequiredSubscribeOnCurrentThread())
+        {
+            this.source = source;
+            this.frameCount = frameCount;
+            this.frameCountType = frameCountType;
+        }
+
+        protected override IDisposable SubscribeCore(IObserver<T> observer, IDisposable cancel)
+        {
+            return new SampleFrame(this, observer, cancel).Run();
+        }
+
+        class SampleFrame : OperatorObserverBase<T, T>
+        {
+            readonly SampleFrameObservable<T> parent;
+            readonly object gate = new object();
+            T latestValue = default(T);
+            bool isUpdated = false;
+            bool isCompleted = false;
+            SingleAssignmentDisposable sourceSubscription;
+
+            public SampleFrame(SampleFrameObservable<T> parent, IObserver<T> observer, IDisposable cancel) : base(observer, cancel)
+            {
+                this.parent = parent;
+            }
+
+            public IDisposable Run()
+            {
+                sourceSubscription = new SingleAssignmentDisposable();
+                sourceSubscription.Disposable = parent.source.Subscribe(this);
+                
+                var scheduling = UnityObservable.IntervalFrame(parent.frameCount, parent.frameCountType)
+                    .Subscribe(new SampleFrameTick(this));
+
+                return StableCompositeDisposable.Create(sourceSubscription, scheduling);
+            }
+
+            void OnNextTick(long _)
+            {
+                lock (gate)
+                {
+                    if (isUpdated)
+                    {
+                        var value = latestValue;
+                        isUpdated = false;
+                        observer.OnNext(value);
+                    }
+                    if (isCompleted)
+                    {
+                        try { observer.OnCompleted(); } finally { Dispose(); }
+                    }
+                }
+            }
+
+            public override void OnNext(T value)
+            {
+                lock (gate)
+                {
+                    latestValue = value;
+                    isUpdated = true;
+                }
+            }
+
+            public override void OnError(Exception error)
+            {
+                lock (gate)
+                {
+                    try { base.observer.OnError(error); } finally { Dispose(); }
+                }
+            }
+
+            public override void OnCompleted()
+            {
+                lock (gate)
+                {
+                    isCompleted = true;
+                    sourceSubscription.Dispose();
+                }
+            }
+            class SampleFrameTick : IObserver<long>
+            {
+                readonly SampleFrame parent;
+
+                public SampleFrameTick(SampleFrame parent)
+                {
+                    this.parent = parent;
+                }
+
+                public void OnCompleted()
+                {
+                }
+
+                public void OnError(Exception error)
+                {
+                }
+
+                public void OnNext(long _)
+                {
+                    lock (parent.gate)
+                    {
+                        if (parent.isUpdated)
+                        {
+                            var value = parent.latestValue;
+                            parent.isUpdated = false;
+                            parent.observer.OnNext(value);
+                        }
+                        if (parent.isCompleted)
+                        {
+                            try { parent.observer.OnCompleted(); } finally { parent.Dispose(); }
+                        }
+                    }
+                }
+            }
+        }
+    }
+}