public final boolean isInRangeZ(GameObject obj, long range)
	{
		if(obj == null)
			return false;
		if(obj.getReflection() != getReflection())
			return false;
		long dx = Math.abs(obj.getX() - getX());
		if(dx > range)
			return false;
		long dy = Math.abs(obj.getY() - getY());
		if(dy > range)
			return false;
		long dz = Math.abs(obj.getZ() - getZ());
		return dz <= range && dx * dx + dy * dy + dz * dz <= range * range;
	}