diff --git a/gamecore/modules/world/actors/actor2D.lua b/gamecore/modules/world/actors/actor2D.lua
index a8e79c2..a49252a 100644
--- a/gamecore/modules/world/actors/actor2D.lua
+++ b/gamecore/modules/world/actors/actor2D.lua
@@ -75,6 +75,10 @@ function Actor2D:register()
   self.world:registerActor(self)
 end
 
+function Actor2D:setBounceFactor(newBounceFactor)
+  self.bounceFactor = newBounceFactor or 0
+end
+
 -- INPUT FUNCTIONS
 -- get input from the world object