Roblox Script Generated by ScripterAI

"make me a sprint bar with shift to sprint"

-- local script 
local UserInputService = game:GetService("UserInputService")
local Players = game:GetService("Players")
local player = Players.LocalPlayer
local character = player.Character or player.CharacterAdded:Wait()

local sprinting = false
local sprintBar = player.PlayerGui.ScreenGui.SprintBar
local sprintValue = sprintBar.SprintValue

local function updateSprintBar(value)
    sprintValue.Size = UDim2.new(value, 0, 1, 0)
end

local function toggleSprint()
    if sprinting then
        sprinting = false
        character.Humanoid.WalkSpeed = 16
        while not sprinting and sprintValue.Size.X.Scale < 1 do
            updateSprintBar(sprintValue.Size.X.Scale + 0.01)
            wait(0.03)
        end
    else
        sprinting = true
        character.Humanoid.WalkSpeed = 50
        while sprinting and sprintValue.Size.X.Scale > 0 do
            updateSprintBar(sprintValue.Size.X.Scale - 0.01)
            wait(0.03)
        end
        if sprintValue.Size.X.Scale <= 0 then
            sprinting = false
            character.Humanoid.WalkSpeed = 16
        end
    end
end

UserInputService.InputBegan:Connect(function(input, gameProcessedEvent)
    if input.KeyCode == Enum.KeyCode.LeftShift and not gameProcessedEvent then
        toggleSprint()
    end
end)

UserInputService.InputEnded:Connect(function(input, gameProcessedEvent)
    if input.KeyCode == Enum.KeyCode.LeftShift and not gameProcessedEvent then
        toggleSprint()
    end
end)