在roblox studio中，在玩家头上显示字母

-- 获取玩家
local player = game.Players.LocalPlayer

-- 创建Part对象
local part = Instance.new("Part")
part.Size = Vector3.new(5, 1, 5)
part.Position = player.Character.Head.Position + Vector3.new(0, 3, 0)
part.Parent = game.Workspace

-- 创建BillboardGui对象
local billboardGui = Instance.new("BillboardGui")
billboardGui.Adornee = part
billboardGui.Size = UDim2.new(0, 200, 0, 50)
billboardGui.StudsOffset = Vector3.new(0, 3, 0)
billboardGui.Parent = part

-- 创建TextLabel对象
local textLabel = Instance.new("TextLabel")
textLabel.Size = UDim2.new(1, 0, 1, 0)
textLabel.BackgroundTransparency = 1
textLabel.Text = "A"
textLabel.Font = Enum.Font.ArialBold
textLabel.TextColor3 = Color3.new(1, 1, 1)
textLabel.TextStrokeTransparency = 0
textLabel.TextStrokeColor3 = Color3.new(0, 0, 0)
textLabel.Parent = billboardGui