Merge pull request #460 from snozbot/pr/459

Pr/459

Assets/Fungus/Flowchart/Editor/BlockEditor.cs

@@ -767,14 +767,21 @@ namespace Fungus
 			bool showCopy = false;
 			bool showDelete = false;
 			bool showPaste = false;
+            bool showPlay = false;
 
 			if (flowchart.selectedCommands.Count > 0)
 			{
 				showCut = true;
 				showCopy = true;
 				showDelete = true;
+                if (flowchart.selectedCommands.Count == 1 && Application.isPlaying)
+                {
+                    showPlay = true;
+                }
             } 
             
+            
+			
 			CommandCopyBuffer commandCopyBuffer = CommandCopyBuffer.GetInstance();
 			
 			if (commandCopyBuffer.HasCommands())
@@ -820,6 +827,11 @@ namespace Fungus
 				commandMenu.AddDisabledItem(new GUIContent ("Delete"));
 			}
 
+            if (showPlay)
+            {
+                commandMenu.AddItem(new GUIContent("Play from selected"), false, PlayCommand);
+            }
+
             commandMenu.AddSeparator("");
 			
 			commandMenu.AddItem (new GUIContent ("Select All"), false, SelectAll);
@@ -1006,6 +1018,32 @@ namespace Fungus
 			Repaint();
 		}
 		
+		protected void PlayCommand()
+        {
+            Block targetBlock = target as Block;
+            Flowchart flowchart = targetBlock.GetFlowchart();
+            Command command = flowchart.selectedCommands[0];
+            if (targetBlock.IsExecuting())
+            {
+                // The Block is already executing.
+                // Tell the Block to stop, wait a little while so the executing command has a 
+                // chance to stop, and then start execution again from the new command. 
+                targetBlock.Stop();
+                flowchart.StartCoroutine(RunBlock(flowchart, targetBlock, command.commandIndex, 0.2f));
+            }
+            else
+            {
+                // Block isn't executing yet so can start it now.
+                flowchart.ExecuteBlock(targetBlock, command.commandIndex);
+            }
+        }
+
+        protected IEnumerator RunBlock(Flowchart flowchart, Block targetBlock, int commandIndex, float delay)
+        {
+            yield return new WaitForSeconds(delay);
+            flowchart.ExecuteBlock(targetBlock, commandIndex);
+        }
+
         protected void SelectPrevious()
 		{
 			Block block = target as Block;