MassiveCore Revived

MassiveCore 3.0 Original plugin created by Olof Larsson (Olof) and the MassiveCraft team — massivecraft.com MassiveCore 3.0 is an unofficial Paper 1.21.1 compatibility release of MassiveCraft's MassiveCore 2.14.x. All original code, design, and concept belong entirely to MassiveCraft. This release is not affiliated with or endorsed by them. What is MassiveCore? MassiveCore is the backbone of the entire MassiveCraft plugin ecosystem, originally created by Olof Larsson of MassiveCraft. It is not a standalone gameplay plugin — it is a powerful shared library and framework that other MassiveCraft plugins (like Factions) are built on top of. Think of it as the engine under the hood. Every command, every data type, every configuration system, every NMS bridge, and every player interaction in Factions flows through MassiveCore. Without it, none of the other MassiveCraft plugins function. What does it provide? Command Framework A fully featured command system built on top of Bukkit's API. Supports automatic help generation, argument type parsing, permission checking, command aliases, tab completion, subcommand hierarchies, and paginated output. Every /f command you use in Factions is powered by this framework. Type System A rich argument type registry covering nearly every Bukkit type — materials, sounds, biomes, enchantments, entities, world types, pattern types, players, factions, relations, and more. Types handle reading, writing, tab-completing, and displaying values automatically. Data Persistence (Collections) A JSON-based persistence system called Coll (Collections) that handles saving and loading plugin data to disk automatically. Supports migration, indexing, foreign keys, and live reloading. Mixin System An abstraction layer over NMS (net.minecraft.server) internals that selects the correct implementation for the running server version at startup. Provides stable APIs for things like sending titles, playing sounds, spawning particles, and other NMS-dependent features. Engine System A lightweight repeating-task system (Engine) used to run background logic on a schedule — such as registering commands, updating scoreboards, or ticking game logic. Gson / Serialization A customised Gson setup used to serialise all plugin data to and from JSON, with support for custom type adapters for Bukkit objects. Integration Support Provides hooks and base classes for optional integrations with third-party plugins such as Vault, WorldGuard, and others. What's new in 3.0 MassiveCore 3.0 is a full Paper 1.21.1 / Java 21 compatibility overhaul of the original 2.14.x codebase. The original crashes completely on modern servers before a single command registers. Every breaking change has been identified and fixed: