Buliding tools

local Players = game:GetService("Players")
local ReplicatedStorage = game:GetService("ReplicatedStorage")
local player = Players.LocalPlayer
local mouse = player:GetMouse()

-- 💡 Auto-create BuildPart if it doesn't exist
local buildPart = ReplicatedStorage:FindFirstChild("BuildPart")
if not buildPart then
	buildPart = Instance.new("Part")
	buildPart.Name = "BuildPart"
	buildPart.Size = Vector3.new(4,1,4)
	buildPart.Anchored = true
	buildPart.Material = Enum.Material.SmoothPlastic
	buildPart.TopSurface = Enum.SurfaceType.Smooth
	buildPart.BottomSurface = Enum.SurfaceType.Smooth
	buildPart.BrickColor = BrickColor.Blue()
	buildPart.CanCollide = true
	buildPart.Parent = ReplicatedStorage
end

-- 🧰 Build Tool setup
local equipped = false

local tool = Instance.new("Tool")
tool.Name = "Build Tool"
tool.RequiresHandle = false
tool.Parent = player:WaitForChild("Backpack")

-- Settings
local gridSize = 4
local currentColor = BrickColor.Blue()
local colorOptions = {
	BrickColor.Blue(), BrickColor.Red(), BrickColor.Green(),
	BrickColor.Yellow(), BrickColor.White(), BrickColor.Black()
}
local colorIndex = 1

-- State
local placing = true
local selected