public void update( ArrayList<PhysicObject> objectList, float delta )
	{
		if ( objectList == null )
			return;
		for ( PhysicObject object : objectList )
			physics( object, delta );
		for ( int i = 0; i < objectList.size(); i++ )
		{
			for ( int j = i + 1; j < objectList.size(); j++ )
				intersect( objectList.get( i ), objectList.get( j ) );
		}
	}