reworked script host, working on nbttags

src/main/java/carpet/script/value/ListValue.java

@@ -316,6 +316,17 @@ public class ListValue extends Value
         return (double)items.size();
     }
 
+    @Override
+    public Value getElementAt(Value value)
+    {
+        long index = NumericValue.asNumber(value).getLong();
+        int numitems = items.size();
+        long range = abs(index)/numitems;
+        index += (range+2)*numitems;
+        index = index % numitems;
+        return items.get((int)index);
+    }
+
 
 
 }