Sprint Script | ROBLOX

local Humanoid = script.Parent:FindFirstChild("Humanoid")
local UserInputService = game:GetService("UserInputService")
local Key = Enum.KeyCode.LeftShift
local Camera = workspace.CurrentCamera
local DefaultFOV = Camera.FieldOfView
local SprintingFOV = DefaultFOV + 3
local DefaultSpeed = game.StarterPlayer.CharacterWalkSpeed
local SprintSpeed = DefaultSpeed * 2
local TweenWaitTime = 0.15
local Toggle = false
local Sprinting = false

local TweenService = game:GetService("TweenService")
local MyTweenInfo = TweenInfo.new(TweenWaitTime, Enum.EasingStyle.Sine, Enum.EasingDirection.Out)
local SprintingFOV_Properties = {FieldOfView = SprintingFOV}
local DefaultFOV_Properties = {FieldOfView = DefaultFOV}

local SpintingFOV_Animation = TweenService:Create(Camera, MyTweenInfo, SprintingFOV_Properties)
local DefaultFOV_Animation = TweenService:Create(Camera, MyTweenInfo, DefaultFOV_Properties)

UserInputService.InputBegan:Connect(function(Input)
    if Input.KeyCode == Key then
        if Toggle == false then
            Sprinting = true

            while Sprinting == true do
                SpintingFOV_Animation:Play()
                Humanoid.WalkSpeed = SprintSpeed
                wait()
            end
        else
            Sprinting = not Sprinting

            if Sprinting == true then
                SpintingFOV_Animation:Play()
                Humanoid.WalkSpeed = SprintSpeed
            elseif Sprinting == false then
                DefaultFOV_Animation:Play()
                Humanoid.WalkSpeed = DefaultSpeed
            end
        end
    end
end)

UserInputService.InputEnded:Connect(function(Input)
    if Input.KeyCode == Key then
        if Toggle == false then
            Sprinting = false

            while Sprinting == false do
                DefaultFOV_Animation:Play()
                Humanoid.WalkSpeed = DefaultSpeed
                wait()
            end
        end
    end
end)