package UnitIndexer

	import CreationEvent

	public function unit.index() returns integer
		return new UnitIndex(this) castTo int
		
	public function unit.getIndex() returns integer
		return this.getUserData()
		
	public function unit.deIndex()
		destroy this.getUserData() castTo UnitIndex
		
	//Extend this class to add features to the Indexer
	class UnitIndex
		use CreationEvent
		unit u
		
		construct(unit u)
			this.u = u
			u.setUserData(this castTo int)
			
endpackage