UpgradeFurnaces

THIS PLUGIN IS AI/VIBE CODED.

UpgradeFurnace gives your players a reason to grind — upgrade their furnaces and blast furnaces through four tiers of smelting power, each faster than the last but at the cost of burning through fuel quicker.

⚙️ Features

Four upgrade tiers — Basic, Elite, Advanced, and Ultimate, each with configurable speed multipliers, fuel multipliers, and prices
Vault economy integration — upgrades cost in-game currency, fully compatible with any Vault-supported economy plugin
Inventory linking — link a Chest, Double Chest, Barrel, or Shulker Box to a furnace to automatically feed fuel and raw materials in, and pull finished output back out
Upgrade persistence — upgrades are stored via PDC and survive server restarts; breaking and replacing a furnace restores its previous tier
Blast Furnace support — optionally allow blast furnaces to be upgraded alongside regular furnaces, toggleable in config
Tier display — the furnace GUI title updates to reflect the current tier (e.g. Furnace [Ultimate])
Clean MiniMessage formatting — all messages use Kyori Adventure MiniMessage, fully customisable in config

🖱️ How to Use

Shift + Right-click a furnace or blast furnace to open the upgrade menu
Shift + Left-click a furnace then a chest, barrel, or shulker box to link an inventory
Shift + Left-click an already-linked furnace to unlink it

📋 Requirements

Paper 1.21.1 or later
Vault + a compatible economy plugin (e.g. EssentialsX, CMI)

🔧 Configuration
Everything is configurable in config.yml — tier prices, speed multipliers, fuel multipliers, blast furnace toggle, automation interval, and all plugin messages.

Built for server owners who want to give economy meaning and automation a purpose.

permissions:
  upgradefurnace.info:
    description: Allows using /upgradefurnace info
    default: true
  upgradefurnace.reload:
    description: Allows using /upgradefurnace reload
    default: op
  upgradefurnace.link.limit.1:
    description: Allows linking up to 1 furnace
    default: true
  upgradefurnace.link.limit.3:
    description: Allows linking up to 3 furnaces
    default: false
  upgradefurnace.link.limit.5:
    description: Allows linking up to 5 furnaces
    default: false
  upgradefurnace.link.limit.bypass:
    description: Bypass furnace link cap (unlimited)
    default: op