Minestom 1.21.2 update

changes.md

Breaking changes

• Entity.Pose becomes EntityPose
• Player.Hand becomes PlayerHand
• Range has been reworked with all the number impl as subclasses (used for the command range argument)
• RelativeVec has been made record, and package moved to coordinate
• ChunkUtils has been broken down into CoordConversion and ChunkRange
• Player.Settings becomes ClientSettings and immutable
• Removed NotificationCenter in favor of Player.sendNotification
• The chat format function has been removed in favor of PlayerChatEvent.setFormattedMessage

New utils

• EntityStatuses listing... entity statuses. As listed there: https://wiki.vg/Entity_statuses
• MetadataDef listing metadata access points. Differentiate itself from the current metadata API as it does not handle storage.

Networking

• Packets are all registed in PacketRegistry with their ids and serializers
• Packets serializer are exposed as static fields in their respective files
• processImmediately packets are stored in PlayerSocketConnection, making packets file purely declarative
• Use virtual threads for networking (no more Worker)
• Remove BinaryBuffer
• Use NetworkBuffer everywhere, removed ByteBuffer from all APIs
• Make more use of NetworkBufferTemplate all over the codebase
• Moved Viewable methods to PacketViewableUtils
• Moved sendGroupedPacket/sendPacket(Audience, ServerPacket) to PacketSendingUtils
• Separated packet reading/writing from PacketUtils into PacketReading and PacketWriting
• Add PacketVanilla which hold some constants true for vanilla clients

Reworked NetworkBuffer with the following options:

• Registries becomes a parameter
• AutoResize allowing you to custom by how much a buffer should auto extend once full
• Explicit resizable/static factory methods
• Added write/readAt specific index
• Removed all type reading methods (list, bitset, optional, etc...) in favor of constant NetworkBuffer.Types
• Added NetworkBuffer.Type#sizeOf to help pre-size buffer before any allocation
• (Internally) switch the backend from ByteBuffer to Unsafe allowing long indexes

World generation

Generator and IChunkLoader (when supporting parallel loading/saving), are now executed in a virtual thread.

JFR Monitoring

A few JFR events have been implemented. You can view the list in EventsJFR.

Dependencies

• Removal of Caffeine which shouldn't have much of an impact, except that users are now responsible for caching MojangUtils results to avoid blocking operations