WIP: Message stream

AssemblyInfo.cs

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+using System.Runtime.InteropServices;
+
+// Setting ComVisible to false makes the types in this assembly not visible  
+// to COM components.  If you need to access a type in this assembly from  
+// COM, set the ComVisible attribute to true on that type. 
+[assembly: ComVisible(false)]

EditorScript/EditorPlayModeState.cs

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+namespace Wizcorp.MageSDK.Editor
+{
+	public enum EditorPlayModeState
+	{
+		Stopped,
+		Playing,
+		Paused
+	}
+}

EditorScript/UnityEditorPlayMode.cs

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+#if UNITY_EDITOR
+
+using UnityEditor;
+
+namespace Wizcorp.MageSDK.Editor
+{
+	[InitializeOnLoad]
+	public static class UnityEditorPlayMode
+	{
+		public delegate void EditorModeChanged(EditorPlayModeState newState);
+
+		private static EditorPlayModeState currentState = EditorPlayModeState.Stopped;
+		public static EditorModeChanged OnEditorModeChanged;
+
+		static UnityEditorPlayMode()
+		{
+			EditorApplication.playmodeStateChanged += OnUnityPlayModeChanged;
+			if (EditorApplication.isPaused)
+			{
+				currentState = EditorPlayModeState.Paused;
+			}
+		}
+
+		private static void OnUnityPlayModeChanged()
+		{
+			var newState = EditorPlayModeState.Stopped;
+			switch (currentState)
+			{
+				case EditorPlayModeState.Stopped:
+					if (EditorApplication.isPlayingOrWillChangePlaymode)
+					{
+						newState = EditorPlayModeState.Playing;
+					}
+					else
+					{
+						newState = EditorPlayModeState.Paused;
+					}
+					break;
+				case EditorPlayModeState.Playing:
+					if (EditorApplication.isPaused)
+					{
+						newState = EditorPlayModeState.Paused;
+					}
+					else if (EditorApplication.isPlaying)
+					{
+						newState = EditorPlayModeState.Playing;
+					}
+					else
+					{
+						newState = EditorPlayModeState.Stopped;
+					}
+					break;
+				case EditorPlayModeState.Paused:
+					if (EditorApplication.isPlayingOrWillChangePlaymode && !EditorApplication.isPaused)
+					{
+						newState = EditorPlayModeState.Playing;
+					}
+					else if (EditorApplication.isPlayingOrWillChangePlaymode && EditorApplication.isPaused)
+					{
+						newState = EditorPlayModeState.Paused;
+					}
+					break;
+			}
+
+			if (OnEditorModeChanged != null)
+			{
+				OnEditorModeChanged.Invoke(newState);
+			}
+
+			currentState = newState;
+		}
+	}
+}
+
+#endif

Event/EventEmitter.cs

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+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+
+namespace Wizcorp.MageSDK.Event
+{
+	public class EventEmitter<T>
+	{
+		private EventHandlerList eventsList = new EventHandlerList();
+
+		//
+		private Dictionary<string, object> eventTags = new Dictionary<string, object>();
+
+		//
+		public void On(string eventTag, Action<object, T> handler)
+		{
+			if (!eventTags.ContainsKey(eventTag))
+			{
+				eventTags.Add(eventTag, new object());
+			}
+
+			eventsList.AddHandler(eventTags[eventTag], handler);
+		}
+
+		//
+		public void Once(string eventTag, Action<object, T> handler)
+		{
+			Action<object, T> handlerWrapper = null;
+			handlerWrapper = (obj, arguments) => {
+				eventsList.RemoveHandler(eventTags[eventTag], handlerWrapper);
+				handler(obj, arguments);
+			};
+
+			On(eventTag, handlerWrapper);
+		}
+
+		//
+		public void Emit(string eventTag, object sender, T arguments)
+		{
+			if (!eventTags.ContainsKey(eventTag))
+			{
+				return;
+			}
+
+			var execEventList = (Action<object, T>)eventsList[eventTags[eventTag]];
+			execEventList(sender, arguments);
+		}
+
+		public void Emit(string eventTag, T arguments)
+		{
+			Emit(eventTag, null, arguments);
+		}
+
+		//
+		public void Off(string eventTag, Action<object, T> handler)
+		{
+			eventsList.RemoveHandler(eventTags[eventTag], handler);
+		}
+
+		//
+		public void RemoveAllListeners()
+		{
+			// Destroy all event handlers
+			eventsList.Dispose();
+			eventsList = new EventHandlerList();
+
+			// Destroy all event tags
+			eventTags = new Dictionary<string, object>();
+		}
+	}
+}