Sprint Stamina

--// MADE BY TACIDUSYT \\--

--// VARIABLE \\--

local UIS = game:GetService('UserInputService')
local Bar = script.Parent:WaitForChild('Sprint'):WaitForChild('Bar')
local player = game.Players.LocalPlayer
local NormalWalkSpeed = 16
local NewWalkSpeed = 25
local ii = 10
local running = false
repeat wait() until game.Players.LocalPlayer.Character
local character = player.Character

--// FUNCTIONS \\--

UIS.InputBegan:connect(function(key, gameProcessed)
    if key.KeyCode == Enum.KeyCode.LeftShift and gameProcessed == false then
        character.Humanoid.WalkSpeed = NewWalkSpeed
        running = true
        while ii > 0 and running do
            ii = ii - .03
            Bar:TweenSize(UDim2.new(ii / 10, 0, 1, 0), 'Out', 'Quint', .1, true)
            --Bar.BackgroundColor3 = Bar.BackgroundColor3:lerp(Color3.fromRGB(255, 42, 42), 0.001)
            wait()
            if ii <= 0 then
                character.Humanoid.WalkSpeed = NormalWalkSpeed
            end
        end
    end
end)

UIS.InputEnded:connect(function(key, gameProcessed)
    if key.KeyCode == Enum.KeyCode.LeftShift and gameProcessed == false then
        character.Humanoid.WalkSpeed = NormalWalkSpeed
        running = false
        while ii < 10 and not running do
            ii = ii + .03
            Bar:TweenSize(UDim2.new(ii / 10, 0, 1, 0), 'Out', 'Quint', .1, true)
            --Bar.BackgroundColor3 = Bar.BackgroundColor3:lerp(Color3.fromRGB(255, 166, 11), 0.001)
            wait()
            if ii <= 0 then
                character.Humanoid.WalkSpeed = NormalWalkSpeed
            end
        end
    end
end)