Fixed ObjectField() performance issues.

Assets/Fungus/Dialog/Editor/ChooseEditor.cs

@@ -39,11 +39,13 @@ namespace Fungus.Script
 
 			Character character = FungusCommandEditor.ObjectField<Character>(new GUIContent("Character", "Character to display in dialog"), 
 			                                                                 new GUIContent("<None>"),
-			                                                                 t.character);
+			                                                                 t.character,
+			                                                                 Character.activeCharacters);
 
 			ChooseDialog dialog = FungusCommandEditor.ObjectField<ChooseDialog>(new GUIContent("Choose Dialog", "Dialog to use when displaying choices"), 
 			                                                                    new GUIContent("<Default>"),
-			                                                                    t.dialog);
+			                                                                    t.dialog,
+			                                                                    ChooseDialog.activeDialogs);
 
 			AudioClip voiceOverClip = EditorGUILayout.ObjectField(new GUIContent("Voice Over Clip", "Voice over audio to play when the choose text is displayed"),
 			                                                      t.voiceOverClip,

Assets/Fungus/Dialog/Editor/SayEditor.cs

@@ -79,11 +79,13 @@ namespace Fungus.Script
 
 			Character character = FungusCommandEditor.ObjectField<Character>(new GUIContent("Character", "Character to display in dialog"), 
 			                                                                 new GUIContent("<None>"),
-			                                                                 t.character);
+			                                                                 t.character,
+			                                                                 Character.activeCharacters);
 
 			SayDialog dialog = FungusCommandEditor.ObjectField<SayDialog>(new GUIContent("Say Dialog", "Dialog to use when displaying Say command story text"), 
-			                                                                  new GUIContent("<Default>"),
-			                                                                  t.dialog);
+			                                                              new GUIContent("<Default>"),
+			                                                              t.dialog,
+			                                                              SayDialog.activeDialogs);
 
 			AudioClip voiceOverClip = EditorGUILayout.ObjectField(new GUIContent("Voice Over Clip", "Voice over audio to play when the say text is displayed"),
 			                                                      t.voiceOverClip,

Assets/Fungus/Dialog/Scripts/Character.cs

@@ -1,15 +1,32 @@
 using UnityEngine;
 using System.Collections;
+using System.Collections.Generic;
 
 namespace Fungus.Script
 {
 
+	[ExecuteInEditMode]
 	public class Character : MonoBehaviour 
 	{
 		public string characterName;
 		public Sprite characterImage;
 		public SayDialog.DialogSide dialogSide;
 		public Color characterColor;
+
+		static public List<Character> activeCharacters = new List<Character>();
+
+		void OnEnable()
+		{
+			if (!activeCharacters.Contains(this))
+			{
+				activeCharacters.Add(this);
+			}
+		}
+		
+		void OnDisable()
+		{
+			activeCharacters.Remove(this);
+		}
 	}
 
 }

Assets/Fungus/Dialog/Scripts/ChooseDialog.cs

@@ -8,6 +8,7 @@ using System.Collections.Generic;
 namespace Fungus.Script
 {
 
+	[ExecuteInEditMode]
 	public class ChooseDialog : Dialog 
 	{
 		public Slider slider;
@@ -20,6 +21,21 @@ namespace Fungus.Script
 
 		public List<UnityEngine.UI.Button> optionButtons = new List<UnityEngine.UI.Button>();
 
+		static public List<ChooseDialog> activeDialogs = new List<ChooseDialog>();
+
+		void OnEnable()
+		{
+			if (!activeDialogs.Contains(this))
+			{
+				activeDialogs.Add(this);
+			}
+		}
+		
+		void OnDisable()
+		{
+			activeDialogs.Remove(this);
+		}
+
 		public void Choose(string text, List<Option> options, float timeoutDuration, Action onTimeout)
 		{
 			Clear();

Assets/Fungus/Dialog/Scripts/SayDialog.cs

@@ -2,14 +2,31 @@
 using UnityEngine.UI;
 using System;
 using System.Collections;
+using System.Collections.Generic;
 
 namespace Fungus.Script
 {
 
+	[ExecuteInEditMode]
 	public class SayDialog : Dialog 
 	{
 		public Image continueImage;
 
+		static public List<SayDialog> activeDialogs = new List<SayDialog>();
+
+		void OnEnable()
+		{
+			if (!activeDialogs.Contains(this))
+			{
+				activeDialogs.Add(this);
+			}
+		}
+		
+		void OnDisable()
+		{
+			activeDialogs.Remove(this);
+		}
+
 		public void Say(string text, Action onComplete)
 		{
 			Clear();

Assets/Fungus/FungusScript/Editor/FungusCommandEditor.cs

@@ -170,18 +170,17 @@ namespace Fungus.Script
 			return copy as T;
 		}
 
-		static public T ObjectField<T>(GUIContent label, GUIContent nullLabel, T selectedObject) where T : MonoBehaviour
+		static public T ObjectField<T>(GUIContent label, GUIContent nullLabel, T selectedObject, List<T> objectList) where T : MonoBehaviour
 		{
 			List<GUIContent> objectNames = new List<GUIContent>();
 			
 			int selectedIndex = 0;
 			objectNames.Add(nullLabel);
-			T[] objects = GameObject.FindObjectsOfType<T>();
-			for (int i = 0; i < objects.Length; ++i)
+			for (int i = 0; i < objectList.Count; ++i)
 			{
-				objectNames.Add(new GUIContent(objects[i].name));
+				objectNames.Add(new GUIContent(objectList[i].name));
 				
-				if (selectedObject == objects[i])
+				if (selectedObject == objectList[i])
 				{
 					selectedIndex = i + 1;
 				}
@@ -196,7 +195,7 @@ namespace Fungus.Script
 			}
 			else
 			{
-				result = objects[selectedIndex - 1];
+				result = objectList[selectedIndex - 1];
 			}
 			
 			return result;