Reworked node display and worked on DSL interpretation

Scripts/DSL/Nodes/CraftNode.cs

@@ -6,9 +6,16 @@ public class CraftNode : ProgramNode
     {
         DisplayText = "Craft";
     }
-    public override void Execute(Robot robot)
+    public override bool Execute(Robot robot)
     {
         GD.Print("Craft");
-        nextNode.Execute(robot);
+        if (nextNode != null)
+        {
+            return nextNode.Execute(robot);
+        }
+        else
+        {
+            return true;
+        }
     }
 }

Scripts/DSL/Nodes/HarvestNode.cs

@@ -6,9 +6,16 @@ public class HarvestNode : ProgramNode
     {
         DisplayText = "Harvest";
     }
-    public override void Execute(Robot robot)
+    public override bool Execute(Robot robot)
     {
         GD.Print("Harvest");
-        nextNode.Execute(robot);
+        if (nextNode != null)
+        {
+            return nextNode.Execute(robot);
+        }
+        else
+        {
+            return true;
+        }
     }
 }

Scripts/DSL/Nodes/MoveNode.cs

@@ -8,9 +8,16 @@ public class MoveNode : ProgramNode
     {
         DisplayText = "Move";
     }
-    public override void Execute(Robot robot)
+    public override bool Execute(Robot robot)
     {
         robot.Position = targetPosition;
-        nextNode.Execute(robot);
+        if (nextNode != null)
+        {
+            return nextNode.Execute(robot);
+        }
+        else
+        {
+            return true;
+        }
     }
 }

Scripts/DSL/Nodes/ProgramNode.cs

@@ -9,7 +9,7 @@ public abstract class ProgramNode
         
     }
 
-    public abstract void Execute(Robot robot);
+    public abstract bool Execute(Robot robot);
     public void LinkNode(ProgramNode nextNode)
     {
         this.nextNode = nextNode;