Flowchart.Execute block can't be used with UI events #112

Changed ExecuteBlock to return void.
Added Flowchart.FindBlock so you can check if a Block is executing
before you try to execute it.

Assets/Fungus/Flowchart/Scripts/Flowchart.cs

@@ -251,23 +251,38 @@ namespace Fungus
 			return b;
 		}
 
+		/**
+		 * Returns the named Block in the flowchart, or null if not found.
+		 */
+		public virtual Block FindBlock(string blockName)
+		{
+			Block [] blocks = GetComponentsInChildren<Block>();
+			foreach (Block block in blocks)
+			{
+				if (block.blockName == blockName)
+				{
+					return block;
+				}
+			}
+			
+			return null;
+		}
+
 		/**
 		 * Start running another Flowchart by executing a specific child block.
 		 * The block must be in an idle state to be executed.
-		 * Returns true if the Block started execution.
+		 * You can use this method in a UI event. e.g. to handle a button click.
 		 */
-		public virtual bool ExecuteBlock(string blockName)
+		public virtual void ExecuteBlock(string blockName)
 		{
 			Block [] blocks = GetComponentsInChildren<Block>();
 			foreach (Block block in blocks)
 			{
 				if (block.blockName == blockName)
 				{
-					return ExecuteBlock(block);
+					ExecuteBlock(block);
 				}
 			}
-
-			return false;
 		}
 
 		/**