local shopPoints = workspace.ServerRef.Lobby.ShopPoints
local shopArea = {shopPoints.Point1.Position, shopPoints.Point2.Position, shopPoints.Point3.Position, shopPoints.Point4.Position, shopPoints.Point5.Position}
local function PointWithinArea(Point, Points)
    local Side
    for i = 1, #Points do
        local Point0 = Points[i]
        local Point1 = Points[i == #Points and 1 or i + 1]
        local Value = (Point1 - Point0):Cross(Point - Point0).Y > 0
        if Side ~= nil and Value ~= Side then
            return false
        end
        Side = Value
    end
    return true
end

game.Players.LocalPlayer.CharacterAdded:Connect(function(character)
    character:WaitForChild("HumanoidRootPart")
    character.Humanoid.Changed:Connect(function()
        if PointWithinArea(character.HumanoidRootPart.Position, shopArea) then
            game.Players.LocalPlayer.PlayerGui.MainGameGuis.Shop.Visible = true
        else
            game.Players.LocalPlayer.PlayerGui.MainGameGuis.Shop.Visible = false
        end
    end)
end)