-- [[ Update ]]--


function OrbitalCamera:Update(dt)
	local now = tick()
	local timeDelta = (now - self.lastUpdate)
	local userPanningTheCamera = CameraInput.getRotation() ~= Vector2.new()
	local camera = 	workspace.CurrentCamera
	local newCameraCFrame = camera.CFrame
	local newCameraFocus = camera.Focus
	local player = PlayersService.LocalPlayer
	local cameraSubject = camera and camera.CameraSubject
	local isInVehicle = cameraSubject and cameraSubject:IsA('VehicleSeat')
	local isOnASkateboard = cameraSubject and cameraSubject:IsA('SkateboardPlatform')

	if self.lastUpdate == nil or timeDelta > 1 then
		self.lastCameraTransform = nil
	end

	-- Reset tween speed if user is panning
	if userPanningTheCamera then
		self.lastUserPanCamera = tick()
	end

	local subjectPosition = self:GetSubjectPosition()

	if subjectPosition and player and camera then

		-- Process any dollying being done by gamepad
		-- TODO: Move this
		if self.gamepadDollySpeedMultiplier ~= 1 then
			self:SetCameraToSubjectDistance(self.currentSubjectDistance * self.gamepadDollySpeedMultiplier)
		end

		local VREnabled = VRService.VREnabled
		newCameraFocus = VREnabled and self:GetVRFocus(subjectPosition, timeDelta) or CFrame.new(subjectPosition)

		local flaggedRotateInput = CameraInput.getRotation()

		local cameraFocusP = newCameraFocus.p
		if VREnabled and not self:IsInFirstPerson() then
			local cameraHeight = self:GetCameraHeight()
			local vecToSubject = (subjectPosition - camera.CFrame.p)
			local distToSubject = vecToSubject.magnitude

			-- Only move the camera if it exceeded a maximum distance to the subject in VR
			if distToSubject > self.currentSubjectDistance or flaggedRotateInput.x ~= 0 then
				local desiredDist = math.min(distToSubject, self.currentSubjectDistance)

				-- Note that CalculateNewLookVector is overridden from BaseCamera
				vecToSubject = self:CalculateNewLookVector(vecToSubject.unit * X1_Y0_Z1, Vector2.new(flaggedRotateInput.x, 0)) * desiredDist

				local newPos = cameraFocusP - vecToSubject
				local desiredLookDir = camera.CFrame.lookVector
				if flaggedRotateInput.x ~= 0 then
					desiredLookDir = vecToSubject
				end
				local lookAt = Vector3.new(newPos.x + desiredLookDir.x, newPos.y, newPos.z + desiredLookDir.z)
				newCameraCFrame = CFrame.new(newPos, lookAt) + Vector3.new(0, cameraHeight, 0)
			end
		else
			-- rotateInput is a Vector2 of mouse movement deltas since last update
			self.curAzimuthRad = self.curAzimuthRad - flaggedRotateInput.x

			if self.useAzimuthLimits then
				self.curAzimuthRad = math.clamp(self.curAzimuthRad, self.minAzimuthAbsoluteRad, self.maxAzimuthAbsoluteRad)
			else
				self.curAzimuthRad = (self.curAzimuthRad ~= 0) and (math.sign(self.curAzimuthRad) * (math.abs(self.curAzimuthRad) % TAU)) or 0
			end

			self.curElevationRad = math.clamp(self.curElevationRad + flaggedRotateInput.y, self.minElevationRad, self.maxElevationRad)

			local cameraPosVector = self.currentSubjectDistance * ( CFrame.fromEulerAnglesYXZ( -self.curElevationRad, self.curAzimuthRad, 0 ) * UNIT_Z )
			local camPos = subjectPosition + cameraPosVector

			newCameraCFrame = CFrame.new(camPos, subjectPosition)
		end

		self.lastCameraTransform = newCameraCFrame
		self.lastCameraFocus = newCameraFocus
		if (isInVehicle or isOnASkateboard) and cameraSubject:IsA('BasePart') then
			self.lastSubjectCFrame = cameraSubject.CFrame
		else
			self.lastSubjectCFrame = nil
		end
	end

	self.lastUpdate = now
	return newCameraCFrame, newCameraFocus
end

return OrbitalCamera