Add spiky box variants

entity.lua

@@ -16,6 +16,7 @@ function Entity:initialize(t)
 	self.collision = t.collision --"none", "moveable", "unmoveable"
 	self.sticky = t.sticky or false
 	self.skewer = t.skewer or false
+	self.spiky = t.spiky or false
 	self.sprite = repSprite
 	self.shaAmount = t.sha or 1
 	-- onBump is a method (see Entity:onBump) so mixins like Dialogable can
@@ -144,6 +145,10 @@ function Entity:isSkewer()
 	return self.skewer
 end
 
+function Entity:isSpiky()
+	return self.spiky
+end
+
 function Entity:canPassOver()
 	if self:getCollision() == "none" then 
 		return true