diff --git a/utils.lua b/utils.lua
index 96f6cc1..8aa7035 100644
--- a/utils.lua
+++ b/utils.lua
@@ -7,6 +7,10 @@ utils.getCenterByXY = function (x, y, w, h)
   return { x = (x + (w/2)), y = (y + h/2) }
 end
 
+utils.getXYByCenter = function (x, y, w, h)
+  return { x = (x - (w/2)), y = (y - (h/2)) }
+end
+
 utils.spawnStaticRectangleBySize = function (world, x, y, w, h)
   local center = utils.getCenterByXY(x, y, w, h)
   local rect = world:addRectangle(center.x, center.y, w, h)