Replaced slow calls to FindObjectOfType() and FindDerivedTypes()

Assets/Fungus/Scripts/Editor/BlockEditor.cs

@@ -39,6 +39,21 @@ namespace Fungus.EditorUtils
         protected Texture2D duplicateIcon;
         protected Texture2D deleteIcon;
 
+        static List<System.Type> commandTypes;
+        static List<System.Type> eventHandlerTypes;
+
+        static void CacheEventHandlerTypes()
+        {
+            eventHandlerTypes = EditorExtensions.FindDerivedTypes(typeof(EventHandler)).ToList();
+            commandTypes = EditorExtensions.FindDerivedTypes(typeof(Command)).ToList();
+        }
+
+        [UnityEditor.Callbacks.DidReloadScripts]
+        private static void OnScriptsReloaded()
+        {
+            CacheEventHandlerTypes();
+        }
+
         protected virtual void OnEnable()
         {
             upIcon = FungusEditorResources.Up;
@@ -46,6 +61,8 @@ namespace Fungus.EditorUtils
             addIcon = FungusEditorResources.Add;
             duplicateIcon = FungusEditorResources.Duplicate;
             deleteIcon = FungusEditorResources.Delete;
+
+            CacheEventHandlerTypes();
         }
 
         public virtual void DrawBlockName(Flowchart flowchart)
@@ -317,8 +334,6 @@ namespace Fungus.EditorUtils
         {
             // Show available Event Handlers in a drop down list with type of current
             // event handler selected.
-            List<System.Type> eventHandlerTypes = EditorExtensions.FindDerivedTypes(typeof(EventHandler)).ToList();
-
             Block block = target as Block;
             System.Type currentType = null;
             if (block._EventHandler != null)
@@ -667,8 +682,7 @@ namespace Fungus.EditorUtils
             GenericMenu commandMenu = new GenericMenu();
             
             // Build menu list
-            List<System.Type> menuTypes = EditorExtensions.FindDerivedTypes(typeof(Command)).ToList();
-            List<KeyValuePair<System.Type, CommandInfoAttribute>> filteredAttributes = GetFilteredCommandInfoAttribute(menuTypes);
+            List<KeyValuePair<System.Type, CommandInfoAttribute>> filteredAttributes = GetFilteredCommandInfoAttribute(commandTypes);
 
             filteredAttributes.Sort( CompareCommandAttributes );
 

Assets/Fungus/Scripts/Editor/FlowchartWindow.cs

@@ -133,6 +133,7 @@ namespace Fungus.EditorUtils
         protected Flowchart flowchart;
         protected Block[] blocks;
         protected Block dragBlock;
+        protected static FungusState fungusState;
 
         [MenuItem("Tools/Fungus/Flowchart Window")]
         static void Init()
@@ -205,13 +206,16 @@ namespace Fungus.EditorUtils
         {
             // Using a temp hidden object to track the active Flowchart across 
             // serialization / deserialization when playing the game in the editor.
-            FungusState fungusState = GameObject.FindObjectOfType<FungusState>();
+            if (fungusState == null)
+            {
+                fungusState = GameObject.FindObjectOfType<FungusState>();
                 if (fungusState == null)
                 {
                     GameObject go = new GameObject("_FungusState");
                     go.hideFlags = HideFlags.HideInHierarchy;
                     fungusState = go.AddComponent<FungusState>();
                 }
+            }
 
             if (Selection.activeGameObject != null)
             {

Assets/Fungus/Scripts/Editor/VariableEditor.cs

@@ -86,7 +86,7 @@ namespace Fungus.EditorUtils
                 }
             }
 
-            Flowchart[] fsList = GameObject.FindObjectsOfType<Flowchart>();
+            List<Flowchart> fsList = Flowchart.CachedFlowcharts;
             foreach (Flowchart fs in fsList)
             {
                 if (fs == flowchart)