Free the Factory

local Players = game:GetService("Players")
local ServerStorage = game:GetService("ServerStorage")
local CollectionService = game:GetService("CollectionService")
local TweenService = game:GetService("TweenService")
local Debris = game:GetService("Debris")
local DataStoreService = game:GetService("DataStoreService")
local Settings = require(game.ReplicatedStorage.Settings)

local tycoon = workspace.Tycoon
local items = ServerStorage.TycoonItems
local rebirthPad = ServerStorage.RebirthPad
local factoryStore = DataStoreService:GetDataStore("Factory")
local owner = nil
local headline = "Step on the green pad to claim this factory"
local earned = 0

print("Ore is worth " .. Settings.OreValue .. " Cash")

-- Every player gets Cash and Rebirths on the leaderboard
Players.PlayerAdded:Connect(function(player)
	local leaderstats = Instance.new("Folder")
	leaderstats.Name = "leaderstats"
	leaderstats.Parent = player

	local cash = Instance.new("IntValue")
	cash.Name = "Cash"
	cash.Parent = leaderstats

	local rebirths = Instance.new("IntValue")
	rebirths.Name = "Rebirths"
	rebirths.Parent = leaderstats

	-- what this player had last time
	local ok, saved = pcall(function()
		return factoryStore:GetAsync(player.UserId)
	end)
	if ok and saved then
		cash.Value = saved.Cash or 0
		rebirths.Value = saved.Rebirths or 0
	end
end)

-- The sign above the factory
local gui = Instance.new("SurfaceGui")
gui.Parent = tycoon.Sign

local signLabel = Instance.new("TextLabel")
signLabel.Name = "Status"
signLabel.Size = UDim2.fromScale(1, 1)
signLabel.BackgroundColor3 = Color3.fromRGB(25, 25, 35)
signLabel.TextColor3 = Color3.fromRGB(255, 255, 255)
signLabel.TextScaled = true
signLabel.Text = "Step on the green pad to claim this factory"
signLabel.Parent = gui

local function setSign(text)
	signLabel.Text = text
end

-- Ore: a small part worth Cash, dropped under a dropper
local function dropOre(dropper)
	local ore = Instance.new("Part")
	ore.Name = "Ore"
	ore.Size = Vector3.new(1, 1, 1)
	ore.Color = Color3.fromRGB(150, 150, 160)
	ore.Position = dropper.Position - Vector3.new(0, 2.5, 0)
	ore:SetAttribute("Value", Settings.OreValue)
	if math.random() < Settings.GoldChance then
		ore.Color = Color3.fromRGB(255, 200, 40)
		ore.Material = Enum.Material.Neon
		ore:SetAttribute("Value", Settings.OreValue * 5)
	end
	ore.Parent = workspace
	Debris:AddItem(ore, 20)
end

local function startDropper(dropper)
	task.spawn(function()
		while dropper:IsDescendantOf(workspace) do
			dropOre(dropper)
			task.wait(Settings.DropInterval)
		end
	end)
end

-- The conveyor carries whatever rests on it
tycoon.Conveyor.AssemblyLinearVelocity = Vector3.new(Settings.BeltSpeed, 0, 0)

-- The collector turns ore into Cash
tycoon.Collector.Touched:Connect(function(hit)
	if hit.Name == "Ore" then
		local value = hit:GetAttribute("Value")
		hit:Destroy()
		if owner then
			value = math.floor(value * (1 + owner.leaderstats.Rebirths.Value * Settings.RebirthBonus))
			owner.leaderstats.Cash.Value += value
			earned += value
		end
	end
end)

-- The upgrader doubles each ore that passes through it, once
items.Upgrader.Touched:Connect(function(hit)
	if hit.Name == "Ore" and not hit:GetAttribute("Upgraded") then
		hit:SetAttribute("Upgraded", true)
		hit:SetAttribute("Value", hit:GetAttribute("Value") * 2)
		hit.Color = Color3.fromRGB(155, 89, 182)
	end
end)

-- Pads that wait for an item to be built first
local waiting = Instance.new("Folder")
waiting.Name = "WaitingPads"
waiting.Parent = ServerStorage

-- Pads already bought, kept for the next rebirth
local bought = Instance.new("Folder")
bought.Name = "BoughtPads"
bought.Parent = ServerStorage

-- A new part rises into place
local function riseIn(part)
	local goal = part.Position
	local transparency = part.Transparency
	part.Position = goal - Vector3.new(0, 8, 0)
	part.Transparency = 1
	TweenService:Create(part, TweenInfo.new(1), { Position = goal, Transparency = transparency }):Play()
end

local function checkComplete()
	if #tycoon.Buttons:GetChildren() == 0 and #waiting:GetChildren() == 0 then
		headline = "Factory complete! Step on the purple pad to rebirth"
		setSign(headline)
		rebirthPad.Parent = tycoon
	end
end

-- Put a bought item in the factory
local function build(item)
	item.Parent = tycoon.Built
	if item:IsA("BasePart") then
		riseIn(item)
	end
	for _, part in item:GetDescendants() do
		if part:IsA("BasePart") then
			riseIn(part)
		end
	end
	if item:HasTag("Dropper") then
		-- start dropping once it is in place
		task.delay(1, startDropper, item)
	end
	for _, pad in waiting:GetChildren() do
		if pad:GetAttribute("After") == item.Name then
			pad.Parent = tycoon.Buttons
		end
	end
	checkComplete()
end

-- Buying: the pad goes away and its item is built
local function buy(pad, player)
	if player ~= owner or pad.Parent ~= tycoon.Buttons then
		return
	end
	local cash = player.leaderstats.Cash
	local price = pad:GetAttribute("Price")
	if cash.Value < price then
		return
	end
	cash.Value -= price
	pad.Parent = bought
	build(items:FindFirstChild(pad:GetAttribute("Item")))
end

for _, pad in tycoon.Buttons:GetChildren() do
	pad.Touched:Connect(function(hit)
		local player = Players:GetPlayerFromCharacter(hit.Parent)
		if player then
			buy(pad, player)
		end
	end)
end

-- A price tag floats over every pad
for _, pad in tycoon.Buttons:GetChildren() do
	local tag = Instance.new("BillboardGui")
	tag.Name = "PriceTag"
	tag.Size = UDim2.fromOffset(160, 40)
	tag.StudsOffset = Vector3.new(0, 3, 0)
	tag.Parent = pad

	local label = Instance.new("TextLabel")
	label.Size = UDim2.fromScale(1, 1)
	label.BackgroundColor3 = Color3.fromRGB(25, 25, 35)
	label.BackgroundTransparency = 0.2
	label.TextColor3 = Color3.fromRGB(255, 255, 255)
	label.TextScaled = true
	label.Text = pad:GetAttribute("Label") .. ": $" .. pad:GetAttribute("Price")
	label.Parent = tag
end

-- Only the first pads show at the start
for _, pad in tycoon.Buttons:GetChildren() do
	if pad:GetAttribute("After") then
		pad.Parent = waiting
	end
end

-- Back to an empty factory: items to storage, pads back where they started
local function resetFactory()
	rebirthPad.Parent = ServerStorage
	for _, item in tycoon.Built:GetChildren() do
		item.Parent = items
	end
	for _, pad in bought:GetChildren() do
		if pad:GetAttribute("After") then
			pad.Parent = waiting
		else
			pad.Parent = tycoon.Buttons
		end
	end
end

rebirthPad.Touched:Connect(function(hit)
	local player = Players:GetPlayerFromCharacter(hit.Parent)
	if player and player == owner and rebirthPad.Parent == tycoon then
		resetFactory()
		player.leaderstats.Rebirths.Value += 1
		player.leaderstats.Cash.Value = 0
		headline = player.Name .. "'s Factory"
		setSign(headline)
	end
end)

-- Saving: Cash and Rebirths
local function saveFactory(player)
	local data = {
		Cash = player.leaderstats.Cash.Value,
		Rebirths = player.leaderstats.Rebirths.Value,
	}
	pcall(function()
		factoryStore:SetAsync(player.UserId, data)
	end)
end

-- A player's Cash and Rebirths are saved when they leave
Players.PlayerRemoving:Connect(function(player)
	saveFactory(player)
	-- Lesson 20: Free the Factory goes here
end)

game:BindToClose(function()
	for _, player in Players:GetPlayers() do
		saveFactory(player)
	end
end)

-- The sign shows the owner's income, every 5 seconds
task.spawn(function()
	while true do
		task.wait(5)
		if owner then
			setSign(headline .. "\n$" .. math.floor(earned / 5) .. " a second")
		end
		earned = 0
	end
end)

-- Claiming: the first player to step on the pad owns the factory
local claimPad = tycoon.ClaimPad
claimPad.Touched:Connect(function(hit)
	local player = Players:GetPlayerFromCharacter(hit.Parent)
	if player and not owner then
		owner = player
		claimPad.Color = Color3.fromRGB(120, 120, 120)
		claimPad.Material = Enum.Material.SmoothPlastic
		headline = player.Name .. "'s Factory"
		setSign(headline)
		for _, dropper in CollectionService:GetTagged("Dropper") do
			if dropper:IsDescendantOf(workspace) then
				startDropper(dropper)
			end
		end
	end
end)