Help with an entire body facing script for r15, that doesnt interfere with walking?

I'm trying to make a script where an r15 NPC turns their entire body to look at the player, but they can only turn their body if they aren't already moving.

The NPC is supposed to go on a patrol, and when it stops at certain corners, it can face the player. It would also be good if the NPC went back to it's original rotation if the player is out of the range, like if the NPC was facing forward at the wall. It would go back after the player has left.

I have the body gyro but the aiming script I try don't seem to work, they always just face towards the side and don't seem to look at me.

this is the aiming script i have

function findTorso(pos)
	local torso = nil
	local dist = 1000
	local child = workspace:children()
	for i=1, #child do
		if child[i].className == "Model" then
			local h = child[i]:findFirstChild("Humanoid")
			if h ~= nil then
				local check = child[i]:findFirstChild("Torso")
				if check ~= nil then
					if (check.Position - pos).magnitude < dist then
						torso = check
						dist = (check.Position - pos).magnitude
					end
				end
			end
		end
	end
	return torso
end

while true do
	wait()
	local torso = findTorso(script.Parent.Position)
	if torso ~= nil then
		script.Parent.CFrame = CFrame.new(script.Parent.Position, torso.Position)
	end
end

and the gyro is set to 0,inf,0