Simulating smoother character movement?

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#21

I used one of the scripts and I keep getting this error on line 55
“moveVelocity = math.lerp( moveVelocity, targetMoveVelocity, math.clamp(dt * moveAcceleration, 0, 1) )”

 14:30:17.548  Players.Varsyte.PlayerScripts.MovementControl:55: attempt to call a nil value  -  Client - MovementControl:55

This is the code:

local RunS = game:GetService("RunService")
local InputS = game:GetService("UserInputService")

local player = game.Players.LocalPlayer
local camera = game.Workspace.CurrentCamera
local character = player.Character or player.CharacterAdded:Wait()

local targetMoveVelocity = Vector3.new()
local moveVelocity = Vector3.new()
local moveAcceleration = 8

player.CharacterAdded:Connect(function(_character)
	character = _character
end)

local walkKeyBinds = {
	Forward = { Key = Enum.KeyCode.W, Direction = Enum.NormalId.Front },
	Backward = { Key = Enum.KeyCode.S, Direction = Enum.NormalId.Back },
	Left = { Key = Enum.KeyCode.A, Direction = Enum.NormalId.Left },
	Right = { Key = Enum.KeyCode.D, Direction = Enum.NormalId.Right }
}

local function getWalkDirectionCameraSpace()
	local walkDir = Vector3.new()

	for keyBindName, keyBind in pairs(walkKeyBinds) do
		if InputS:IsKeyDown(keyBind.Key) then
			walkDir += Vector3.FromNormalId( keyBind.Direction )
		end
	end

	if walkDir.Magnitude > 0 then --(0, 0, 0).Unit = NaN, do not want
		walkDir = walkDir.Unit --Normalize, because we (probably) changed an Axis so it's no longer a unit vector
	end

	return walkDir
end

local function getWalkDirectionWorldSpace()
	local walkDir = camera.CFrame:VectorToWorldSpace( getWalkDirectionCameraSpace() )
	walkDir *= Vector3.new(1, 0, 1) --Set Y axis to 0

	if walkDir.Magnitude > 0 then --(0, 0, 0).Unit = NaN, do not want
		walkDir = walkDir.Unit --Normalize, because we (probably) changed an Axis so it's no longer a unit vector
	end

	return walkDir
end

local function updateMovement( dt )
	local humanoid = character:FindFirstChild("Humanoid")
	if humanoid then
		local moveDir = getWalkDirectionWorldSpace()
		targetMoveVelocity = moveDir
		moveVelocity = math.lerp( moveVelocity, targetMoveVelocity, math.clamp(dt * moveAcceleration, 0, 1) )
		humanoid:Move( moveVelocity )
	end
end	

RunS.RenderStepped:Connect(updateMovement)
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