TrailApplier

local dss = game:GetService("DataStoreService")
local ds = dss:GetDataStore("DATA")

local trails = game.ReplicatedStorage:WaitForChild("Trails")


function createAtchs(char)

    local hrp = char:WaitForChild("HumanoidRootPart")

    local atchTop = Instance.new("Attachment", hrp)
    atchTop.Name = "TrailTop"
    atchTop.Position = Vector3.new(0, 0.766, 0)

    local atchBtm = Instance.new("Attachment", hrp)
    atchBtm.Name = "TrailBottom"
    atchBtm.Position = Vector3.new(0, -0.766, 0)
end


function saveData(plrLeaving)

    local ownedTrails = {}
    for i, trail in pairs(plrLeaving.OwnedTrails:GetChildren()) do
        table.insert(ownedTrails, trail.Name)
    end

    local success, err = pcall(function()
        ds:SetAsync("trails-" .. plrLeaving.UserId, ownedTrails)
        ds:SetAsync("money-" .. plrLeaving.UserId, plrLeaving.leaderstats.Money.Value)
    end)
end


game.Players.PlayerAdded:Connect(function(plr)


    local trailsOwned = {}
    local money = 2000
    pcall(function()
        trailsOwned = ds:GetAsync("trails-" .. plr.UserId) or {}
        money = ds:GetAsync("money-" .. plr.UserId) or 2000
    end)


    local ls = Instance.new("Folder", plr)
    ls.Name = "leaderstats"

    local moneyValue = Instance.new("IntValue", ls)
    moneyValue.Name = "Money"
    moneyValue.Value = money


    local ownedFolder = Instance.new("Folder", plr)
    ownedFolder.Name = "OwnedTrails"


    for i, owned in pairs(trailsOwned) do

        if trails:FindFirstChild(owned) then

            trails[owned]:Clone().Parent = ownedFolder
        end
    end

    if plr.Character then createAtchs(plr.Character) end

    plr.CharacterAdded:Connect(createAtchs)
end)


game.Players.PlayerRemoving:Connect(saveData)

game:BindToClose(function()

    for i, plrLeaving in pairs(game.Players:GetPlayers()) do
        saveData(plrLeaving)
    end
end)


game.ReplicatedStorage.TrailSelectedRE.OnServerEvent:Connect(function(plr, buying, trail)

    if buying and not plr.OwnedTrails:FindFirstChild(trail.Name) then

        local price = trail.Price.Value
        local money = plr.leaderstats.Money

        if price <= money.Value then

            money.Value -= price


            trail:Clone().Parent = plr.OwnedTrails
        end


    elseif not buying and plr.OwnedTrails:FindFirstChild(trail.Name) then

        local char = plr.Character

        if not char or not char:FindFirstChild("HumanoidRootPart") then return end

        for i, child in pairs(char.HumanoidRootPart:GetChildren()) do


            if child:IsA("Trail") then child:Destroy() end
        end


        local newTrail = trail:Clone()

        newTrail.Attachment0 = char.HumanoidRootPart.TrailTop
        newTrail.Attachment1 = char.HumanoidRootPart.TrailBottom

        newTrail.Parent = char.HumanoidRootPart
    end
end)