brian42

game.Players.PlayerAdded:connect(function (player)
	-- Add the leaderboard stats to the player
	local leaderstats = Instance.new("Model")
    leaderstats.Name = "leaderstats"
    leaderstats.Parent = player

	-- Add the level
    local level = Instance.new("IntValue")
    level.Name = "Level"
    level.Value = 1
    level.Parent = leaderstats

	-- Can't save and load data to player right after they're added, have to wait to use this first
	if not player:WaitForDataReady() then
    	return
    end

	level.Value = player:LoadNumber("Level")
end)

local checkpoints = workspace.Checkpoints
for _, checkpoint in pairs(checkpoints:GetChildren()) do
	checkpoint.Touched:connect(function (touchedBy)
		local character = touchedBy.Parent
		local player = game.Players:playerFromCharacter(character)
		-- For some reason player can be nil sometimes b/c this gets called even when we don't touch it
		-- And make sure that we don't lower the player's level if they touch an earlier checkpoint
		if (player ~= nil and tonumber(checkpoint.Name) > player.leaderstats.Level.Value) then
			local level = tonumber(checkpoint.Name)
			player.leaderstats.Level.Value = level
			if player.DataReady then
		    	player:SaveNumber("Level", level)
			end
		end
	end)
end