Help with easing character movement

[roblox_user_48558705 (weep)]

Hi, I am trying to fork the ControlModule script so that I can ease character movement from 0 speed to the intended. I am not doing this with WalkSpeed as I believe that will interfere with other scripts.

This is what I have so far:

local easeTime = 0.5
local vectorMult = 0
local charMove = false

function ControlModule:OnRenderStepped(dt)
	if self.activeController and self.activeController.enabled and self.humanoid then
		-- Give the controller a chance to adjust its state
		self.activeController:OnRenderStepped(dt)

		-- Now retrieve info from the controller
		local moveVector = self.activeController:GetMoveVector()
		local cameraRelative = self.activeController:IsMoveVectorCameraRelative()

		local clickToMoveController = self:GetClickToMoveController()
		if self.activeController ~= clickToMoveController then
			if moveVector.magnitude > 0 then
				-- Clean up any developer started MoveTo path
				clickToMoveController:CleanupPath()
			else
				-- Get move vector for developer started MoveTo
				clickToMoveController:OnRenderStepped(dt)
				moveVector = clickToMoveController:GetMoveVector()
				cameraRelative = clickToMoveController:IsMoveVectorCameraRelative()
			end
		end

		-- Are we driving a vehicle ?
		local vehicleConsumedInput = false
		if self.vehicleController then
			moveVector, vehicleConsumedInput = self.vehicleController:Update(moveVector, cameraRelative, self.activeControlModule==Gamepad)
		end

		-- If not, move the player
		-- Verification of vehicleConsumedInput is commented out to preserve legacy behavior,
		-- in case some game relies on Humanoid.MoveDirection still being set while in a VehicleSeat
		--if not vehicleConsumedInput then
		if cameraRelative then
			moveVector = calculateRawMoveVector(self.humanoid, moveVector)
		end
		
		if moveVector > Vector3.new() then
			charMove = true
			task.spawn(function()
				while charMove == true do
					-- HELP NEEDED HERE
				end
			end)
		else
			charMove = false
			vectorMult = 0
		end
		self.moveFunction(Players.LocalPlayer, moveVector * vectorMult, false) -- Moves the player
		--end

		-- And make them jump if needed
		self.humanoid.Jump = self.activeController:GetIsJumping() or (self.touchJumpController and self.touchJumpController:GetIsJumping())
	end
end

Please pay attention to the part where it starts with if moveVector > Vector3.new then...
I want the script to gradually increase the vectorMult variable to 1 over a period of time set by easeTime as long as charMove is true, otherwise vectorMult will reset to 0.

[MysteriousVagabond]

You can take advantage of the dt time variable to interpolate your scalar without needing to generate a new thread. Try replacing this block…

if moveVector > Vector3.new() then
	charMove = true
	task.spawn(function()
		while charMove == true do
			-- HELP NEEDED HERE
		end
	end)
else
	charMove = false
	vectorMult = 0
end

…with this…

if moveVector.Magnitude > 0 then
	charMove = true
	vectorMult = math.min(vectorMult + dt / easeTime, 1)
else
	charMove = false
	vectorMult = 0
end

[roblox_user_48558705 (weep)]

Hi,
I came up with a hacky solution before you sent this, I think my method is pretty similar but it uses a lerp function.

local easeSpeed = 0.06
local fpsDelta = 1/60
local vectorMult = 0

function Lerp(a,b,c)
	return a + (b - a) * c
end

function ControlModule:OnRenderStepped(dt)
	if self.activeController and self.activeController.enabled and self.humanoid then
		-- Give the controller a chance to adjust its state
		self.activeController:OnRenderStepped(dt)

		-- Now retrieve info from the controller
		local moveVector = self.activeController:GetMoveVector()
		local cameraRelative = self.activeController:IsMoveVectorCameraRelative()

		local clickToMoveController = self:GetClickToMoveController()
		if self.activeController ~= clickToMoveController then
			if moveVector.magnitude > 0 then
				-- Clean up any developer started MoveTo path
				clickToMoveController:CleanupPath()
			else
				-- Get move vector for developer started MoveTo
				clickToMoveController:OnRenderStepped(dt)
				moveVector = clickToMoveController:GetMoveVector()
				cameraRelative = clickToMoveController:IsMoveVectorCameraRelative()
			end
		end

		-- Are we driving a vehicle ?
		local vehicleConsumedInput = false
		if self.vehicleController then
			moveVector, vehicleConsumedInput = self.vehicleController:Update(moveVector, cameraRelative, self.activeControlModule==Gamepad)
		end

		-- If not, move the player
		-- Verification of vehicleConsumedInput is commented out to preserve legacy behavior,
		-- in case some game relies on Humanoid.MoveDirection still being set while in a VehicleSeat
		--if not vehicleConsumedInput then
		if cameraRelative then
			moveVector = calculateRawMoveVector(self.humanoid, moveVector)
		end
		
		if moveVector ~= Vector3.new() then
			vectorMult = Lerp(vectorMult, 1, easeSpeed * dt/fpsDelta)
		else
			vectorMult = 0
		end
		self.moveFunction(Players.LocalPlayer, moveVector * vectorMult, false) -- Moves the player
		--end

		-- And make them jump if needed
		self.humanoid.Jump = self.activeController:GetIsJumping() or (self.touchJumpController and self.touchJumpController:GetIsJumping())
	end
end