Easy Checkpoint Script (ROBLOX Lua)

---[CHECKPOINTS]-------------------------------------
local Players = game:GetService('Players')
local Obby = {}
Obby.Checkpoints = {}
Obby.Players = {}
function Obby:Touched(Character, Part)
    local Player = Players:GetPlayerFromCharacter(Character)
    local PlayerInfo = self.Players[Player and Player.UserId or 0]
    local CurrentLevel = PlayerInfo.Level
    local NextLevel = CurrentLevel + 1
    local StageInfo = self.Checkpoints[NextLevel] or {}
    if StageInfo.Part and StageInfo.Part == Part and (Character.PrimaryPart.Position-Part.Position).Magnitude<=8 then
        if tick() - PlayerInfo.LastLeveled < 3 and StageInfo.Level>=NextLevel then
            PlayerInfo.Counts = PlayerInfo.Counts + 1
            if PlayerInfo.Counts >= 3 then
                return Player:Kick('you went to next stage three times too fast ...')
            end
        end
        if StageInfo.Level == NextLevel then
            PlayerInfo.LastLeveled = tick()
            PlayerInfo.Stage.Value = NextLevel
            PlayerInfo.Level = NextLevel
        end
    end
end
function Obby:CreateStats(Player)
    local Stats = Instance.new('Folder')
    Stats.Name = 'leaderstats'
    Stats.Parent = Player
    local Level = Instance.new('IntValue')
    Level.Name = 'Stage'
    Level.Value = 0
    Level.Parent = Stats
    local Data = self.Players[Player.UserId]
    Level.Value = Data.Level
    Data.Stage = Level
end
function Obby.SetupCharacter(Character)
    wait()
    Character:WaitForChild'HumanoidRootPart'
    local Player = Players:GetPlayerFromCharacter(Character)
    local PlayerInfo = Obby.Players[Player.UserId]
    local Checkpoint = Obby.Checkpoints[PlayerInfo.Level]
    if Checkpoint then
        Character:SetPrimaryPartCFrame(CFrame.new(Checkpoint.Part.Position) * CFrame.new(0,3,0))
    end
end
function Obby.SetupPlayer(Player)
    local Data = Obby.Players[Player.UserId]
    Obby.Players[Player.UserId] = Data or {
        ['Level'] = 0;
        ['LastLeveled'] = 0;
        ['Counts'] = 0;
    };
    local Character = Player.Character or Player.CharacterAdded:Wait()
    Obby.SetupCharacter(Character)
    Player.CharacterAdded:Connect(Obby.SetupCharacter)
    return not Data and Obby:CreateStats(Player)
end
function Obby.RemovePlayer(Player)
    local Data = Obby.Players[Player.UserId]
    if Data then
        Obby.Players[Player.UserId] = nil
    end
end
function Obby:SetupCheckpoint(Part)
    local Level = tonumber(Part.Name)
    self.Checkpoints[Level] = {
        ['Part'] = Part;
        ['Level'] = Level;
    }
    Part.Touched:Connect(function(Hit)
        local Character = Hit and Hit.Parent
        local Humanoid = Character and Character:FindFirstChildOfClass'Humanoid'
        if Humanoid and Humanoid.Health > 0 then
            self:Touched(Character, Part)
        end
    end)
end
Players.PlayerAdded:Connect(Obby.SetupPlayer)
Players.PlayerRemoving:Connect(Obby.RemovePlayer)
for _, Player in next, Players:GetPlayers() do
    Obby.SetupPlayer(Player)
end
local Checkpoints = workspace.Checkpoints
for _, Checkpoint in next, Checkpoints:GetChildren() do
    Obby:SetupCheckpoint(Checkpoint)
end