Skrip tombol upgrade

Siapkan GUI upgrade
Di ReplicatedStorage, buat folder bernama Instances.

Di dalam folder Instances, buat ScreenGui bernama JumpPurchaseGui dengan ResetOnSpawn dinonaktifkan.

Di dalam JumpPurchaseGui, buat TextButton bernama JumpButton dengan properti sebagai berikut:
- Text: "Upgrade Jump (5 Koin)"
- TextSize: 25
- AnchorPoint: 1, 1
- Position: {1, 0}, {1, 0}

Juga di dalam folder Instances, buat RemoteFunction bernama IncreaseJumpPowerFunction.

Akhirnya, di layanan StarterPlayer, aktifkan properti CharacterUseJumpPower.

Perbarui PlayerData dengan kekuatan lompatan
Di ServerStorage, ganti kode yang ada di module script PlayerData dengan yang berikut:

```lua
local PlayerData = {}

PlayerData.COIN_KEY_NAME = "Coins"
PlayerData.JUMP_KEY_NAME = "Jump"

local playerData = {
	--[[
		[userId: string] = {
			["Coins"] = coinAmount: number,
			["Jump"] = jumpPower: number
		}
	--]]
}

local function defaultPlayerData()
	return {
		[PlayerData.COIN_KEY_NAME] = 0,
		[PlayerData.JUMP_KEY_NAME] = 0,
	}
end

local function getData(player)
	local data = playerData[tostring(player.UserId)] or defaultPlayerData()
	playerData[tostring(player.UserId)] = data
	return data
end

function PlayerData.getValue(player, key)
	return getData(player)[key]
end

function PlayerData.updateValue(player, key, updateFunction)
	local data = getData(player)
	local oldValue = data[key]
	local newValue = updateFunction(oldValue)

	data[key] = newValue
	return newValue
end

return PlayerData
```

Buat JumpService
Di ServerScriptService, buat skrip bernama JumpService dengan kode berikut:

```lua
-- Layanan
local ReplicatedStorage = game:GetService("ReplicatedStorage")
local ServerStorage = game:GetService("ServerStorage")
local Players = game:GetService("Players")

-- Modul
local Leaderboard = require(ServerStorage.Leaderboard)
local PlayerData = require(ServerStorage.PlayerData)

-- Event
local IncreaseJumpPowerFunction = ReplicatedStorage.Instances.IncreaseJumpPowerFunction

local JUMP_KEY_NAME = PlayerData.JUMP_KEY_NAME
local COIN_KEY_NAME = PlayerData.COIN_KEY_NAME
local JUMP_POWER_INCREMENT = 30
local JUMP_COIN_COST = 5

local function updateJumpPower(player, updateFunction)
	-- Perbarui tabel kekuatan lompat
	local newJumpPower = PlayerData.updateValue(player, JUMP_KEY_NAME, updateFunction)

	-- Perbarui kekuatan lompat pemain
	local character = player.Character or player.CharacterAdded:Wait()
	local humanoid = character:FindFirstChildWhichIsA("Humanoid")
	if humanoid then
		humanoid.JumpPower = newJumpPower

		-- Perbarui papan peringkat lompatan
		Leaderboard.setStat(player, JUMP_KEY_NAME, newJumpPower)
	end
end

local function onPurchaseJumpIncrease(player)
	local coinAmount = PlayerData.getValue(player, COIN_KEY_NAME)
	if coinAmount < JUMP_COIN_COST then
		return false
	end

	-- Tingkatkan kekuatan lompat pemain
	updateJumpPower(player, function(oldJumpPower)
		oldJumpPower = oldJumpPower or 0
		return oldJumpPower + JUMP_POWER_INCREMENT
	end)
	-- Perbarui tabel koin
	local newCoinAmount = PlayerData.updateValue(player, COIN_KEY_NAME, function(oldCoinAmount)
		return oldCoinAmount - JUMP_COIN_COST
	end)
	-- Perbarui papan peringkat koin
	Leaderboard.setStat(player, COIN_KEY_NAME, newCoinAmount)
	return true
end

local function onCharacterAdded(player)
	-- Reset kekuatan lompat pemain saat karakter ditambahkan
	updateJumpPower(player, function(_)
		return 0
	end)
end

-- Inisialisasi pemain yang ditambahkan sebelum terhubung ke event PlayerAdded
for _, player in Players:GetPlayers() do
	onCharacterAdded(player)
end

-- Inisialisasi normal pemain dari event PlayerAdded
local function onPlayerAdded(player)
	player.CharacterAdded:Connect(function()
		onCharacterAdded(player)
	end)
end

local function onPlayerRemoved(player)
	updateJumpPower(player, function(_)
		return nil
	end)
end

IncreaseJumpPowerFunction.OnServerInvoke = onPurchaseJumpIncrease
Players.PlayerAdded:Connect(onPlayerAdded)
Players.PlayerRemoving:Connect(onPlayerRemoved)
```

Buat JumpButtonClickHandler
Di ReplicatedStorage, buat skrip bernama JumpButtonClickHandler dengan RunContext disetel ke Client dan kode berikut:

```lua
local ReplicatedStorage = game:GetService("ReplicatedStorage")
local Players = game:GetService("Players")

local player = Players.LocalPlayer
local playerGui = player.PlayerGui

local IncreaseJumpPowerFunction = ReplicatedStorage.Instances.IncreaseJumpPowerFunction
local jumpPurchaseGui = ReplicatedStorage.Instances.JumpPurchaseGui
local jumpButton = jumpPurchaseGui.JumpButton

local function onButtonClicked()
	local success, purchased = pcall(IncreaseJumpPowerFunction.InvokeServer, IncreaseJumpPowerFunction)
	if not success then
		-- purchased akan menjadi pesan kesalahan jika berhasil false
		error(purchased)
	elseif success and not purchased then
		warn("Koin tidak cukup!")
	end
end

jumpButton.Activated:Connect(onButtonClicked)

-- Tambahkan JumpPurchaseGui ke GUI pemain
jumpPurchaseGui.Parent = playerGui
```