To get the camera angles in a localscript, I have this code:

function cameraAngles()
	local x,y,z = workspace.CurrentCamera.CFrame:toEulerAnglesXYZ()
	return Vector3.new(x,y,z)
end

Then, I use the y of those angles to rotate the RotVelocity of a sphere:

script.Parent.RotVelocity = CFrame.fromEulerAnglesXYZ(0, cameraAngles.y, 0) * controls.Unit * 100

The controls records the input of the WASD Keys, and converts them into a vector3. Back in the localscript:

function getWasdKeys()
	local outputMovementVector = Vector3.new(0,0,0)
	for _,key in ipairs(UserInputService:GetKeysPressed()) do
		if key.KeyCode == Enum.KeyCode.W then
			outputMovementVector = Vector3.new(outputMovementVector.X + 1, 0, outputMovementVector.Z)
		end
		if key.KeyCode == Enum.KeyCode.S then
			outputMovementVector = Vector3.new(outputMovementVector.X - 1, 0, outputMovementVector.Z)
		end
		if key.KeyCode == Enum.KeyCode.A then
			outputMovementVector = Vector3.new(outputMovementVector.X, 0, outputMovementVector.Z - 1)
		end
		if key.KeyCode == Enum.KeyCode.D then
			outputMovementVector = Vector3.new(outputMovementVector.X, 0, outputMovementVector.Z + 1)
		end
	end
	return outputMovementVector
end

I think the problem is that the y camera angle reaches 0 at two opposite points.

Anonymous