function WhichSide(a, x, y)
		local facing = GetUnitFacing(a)
		local angle  = AngleBetweenUnitXY(a, x, y)
		local float_angle

		if angle < 0 then
			angle = angle + 360
		end

		float_angle = facing - angle

		if float_angle < 0 then
			float_angle = float_angle + 360
		end

		return float_angle < 180
	end

	function GetDirection(u, targ)
		local alpha = GetUnitFacing(u)
		local gamma = bj_RADTODEG * Atan2(GetUnitY(targ) - GetUnitY(u), GetUnitX(targ) - GetUnitX(u))

		if gamma < 0 then
			gamma = 360. + gamma
		end

		if (alpha < 180. and not (gamma > alpha and gamma < alpha + 180.)) or (alpha > 180. and gamma > alpha - 180. and gamma < alpha) then
			return 2
		end

		return 1
	end