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Changelog

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

[Unreleased]

Added

  • Added support for transfer packets (1.20.5+)
  • Add environment variable placeholders in configuration file

Fixed

  • Updated list of transparent blocks

[1.10.1+mc1.21.11] - 2026-01-11

Fixed

  • Fixed binary not present in Docker image
  • Commands documentation page not present in menu

[1.10.0+mc1.21.11] - 2026-01-10

Added

  • Add skylight and block light calculation for schematics (1.18+)
  • Allow renaming and disabling commands
  • Allow player to toggle fly and change flyspeed
  • Java wrapper to run PicoLimbo as a Velocity plugin, BungeeCord plugin or standalone using the Java runtime

Updated

  • Now compile and publish pre-built binaries using GNU libc
  • Updated the Debian Pterodactyl egg to use the new GNU binary

[1.9.1+mc1.21.11] - 2025-12-14

Fixed

  • Always enforces secure chat, removing the unsecure chat popup
  • Reduced the interval between keep alive packets from 20 to 15 seconds to match vanilla behavior and reduce kicks

[1.9.0+mc1.21.11] - 2025-12-10

Added

  • /spawn command to teleport player back to spawn
  • Support for 1.21.11

Updated

  • Moved the player_listed setting to the tab_list section

[1.8.0+mc1.21.10] - 2025-11-03

Added

  • Option to hide the player from the tab list
  • Support for block entities
  • Option to block unsupported versions from joining
  • Option to not send the status response

Fixed

  • Status handshake was rejected with legacy or BungeeGuard forwarding enabled

[1.7.0+mc1.21.10] - 2025-10-19

Added

  • Add spawn rotation configuration
  • Add reduced debug info configuration
  • Support for 1.21.10

Fixed

  • Reduced Docker image size
  • Fixed wrong skin parts ID sent in entity metadata packets for version 1.12 to 1.14.4

[1.6.0+mc1.21.9] - 2025-09-30

Added

  • Added support for 1.21.9
  • Player teleportation system when falling below world boundaries with configurable minimum Y position and teleport message
  • Time configuration for all versions with lock time for 1.21.5+ clients
  • Tab list header/footer (1.8+)
  • Player shows up in the tab list
  • Player skins (1.8+)
  • Boss bar (1.9+)
  • Configurable server icon
  • Network compression options
  • MiniMessage formatting support for MOTD and welcome messages
  • Title and subtitle (1.8+)
  • Action bar message (1.8+)

Changed

  • Removed maximum view distance limit
  • Spawn position is now a persistent world setting
  • Updated forwarding configuration format (see documentation)
  • Renamed and relocated spawn dimension setting to world.dimension
  • Schematic is sent to clients starting from 1.16

Fixed

  • High memory usage when sending a large schematic over the network

[1.5.2+mc1.21.8] - 2025-09-06

Fixed

  • Handle invalid Unicode strings by replacing it with the replacement characters �

[1.5.1+mc1.21.8] - 2025-09-01

Changed

  • Major schematic performance optimizations reducing memory, CPU, and network usage for significantly faster schematic loading
  • World height for overworld dimension now fixed at 256 blocks across all versions

Removed

  • Removed unused registry entries

[1.5.0+mc1.21.8] - 2025-08-30

Added

  • Allow customization of the spawn position in the configuration
  • View distance can now be customized
  • Hardcore mode can be defined in configuration
  • Support for loading schematics

Fixed

  • NBT strings and arrays should be prefixed with a UShort
  • Send correct version of the game in KnownPacks
  • Player not spawning due to view distance being too small in certain versions
  • Set center chunk to prevent player getting stuck in loading world screen
  • Void chunk is always send for all versions after 1.19
  • Empty configuration file never gets filled
  • Send correct amount of chunk section given a dimension
  • Clouds not rendering for versions after 1.21.6
  • Connection from BungeeCord were rejected when BungeeCord is running in offline mode
  • Wrong yaw being sent for versions after 1.21.2

[1.4.0+mc1.21.8] - 2025-08-23

Changed

  • Use the same binary reader and writer for NBT and packets, reducing duplicated code
  • Simplified implementation of the Velocity secret key check
  • Renamed nbt crate to pico_nbt
  • Bundled packets' protocol IDs into the binary
  • Pre-compiled and bundled registries into the binary

Fixed

  • Specify the correct latest tag for the Docker image in the documentation
  • Shutdown signal is now properly handled on Docker

Removed

  • Removed pico_ping utility crate
  • Runtime parsing of JSON (registries and packet reports) files

[1.3.2+mc1.21.8] - 2025-07-30

Changed

  • If the game mode is set to spectator in the configuration file, players in 1.7.x will spawn in creative instead of survival

Fixed

  • Keep alive packet not properly sending for 1.7.x

Removed

  • Removed unused PlayerPositionPacket

[1.3.1+mc1.21.8] - 2025-07-19

Changed

  • Updated versioning scheme to adhere to Semantic Versioning
    • We'll start with 1.3.1 as we had 3 versions with minor changes before and this one fixes a compatibility issue with ViaVersion

Fixed

  • Error getting displayed when running behind ViaVersion due to the -1 protocol version number

[v1.21.8] - 2025-07-19

Added

  • Support for 1.21.8

Changed

  • Refactor to simplify the Server struct
  • Updated the README and the documentation

Fixed

  • Invalid login start packet between 1.19 and 1.20.1
  • Do not always serialize as dynamic list if possible for >=1.21.5, which could cause incompatibilities with some proxy plugins (e.g. PacketEvents)
  • UUID is misencoded for <1.7.6 preventing connection to PicoLimbo through Velocity when using 1.7.6 or older clients
  • Invalid string decoding could cause a crash of the server if a player tries to connect with a Unicode username
  • Accept -1 protocol version number during handshake to improve support with ViaVersion

Removed

  • Removed the build script from pico_limbo binary for faster build times, this removes the detailed version number available when using the help command

[v1.21.7] - 2025-06-30

Added

  • Support for 1.21.7
  • Customizable default game mode in configuration
  • Commands auto-completion when running behind a proxy #16
  • Added error message in server's console when modern forwarding failed to help debug issues

Changed

  • Improved de-serialization of spawn dimension configuration

Fixed

  • Send correct biome index in minecraft:login play packet
  • Correctly implement the palette container data type according to 1.21.5 specs
  • Send correct dimension type for 1.20.5, resulting in correct world height and clouds being visible

[v1.21.6] - 2025-06-23

Added

  • Command-line argument to configure the data directory path
  • Introduced a configuration file for easier setup
  • Configurable default spawn dimension in the configuration file
  • Customizable server Message of the Day (MOTD) and maximum player count (display only) through the configuration file.
  • Configurable welcome message sent to players upon login
  • Support for BungeeCord and BungeeGuard forwarding
  • Added support for 1.21.6

Changed

  • Improved documentation in the README and CLI help
  • Online player count is now included in the server's status response
  • The Pterodactyl egg file includes additional environment variables to easily configure
  • Docker images and standalone binaries are now available for Linux/arm64, in addition to Linux/amd64, Windows, and macOS (M-series Macs)
  • The default listening address is now set to 0.0.0.0
  • Improved error logging for clearer diagnostics
  • Direct connection kicks for pre-1.13 clients when modern forwarding is enabled but they attempt to bypass the proxy
  • Refined login sequence to strictly follow Minecraft standards required by BungeeCord

Fixed

  • Fixed issue where the server brand was not sent to clients prior to Minecraft 1.20.2
  • Resolved an issue that caused crashes whenever a null byte was sent to the server during handshake
  • Fixed incorrect Docker image tag in README and docker-compose.yml
  • Removed invalid CLI argument in Dockerfile preventing the server from starting
  • Enhanced stability and reduced server crashes (panics)
  • worldgen/biome registry not being sent when running on windows causing a Network Protocol Error on the client

[v1.21.5-4] - 2025-05-15

  • Fixed Docker image not including the assets directory
  • Update Pterodactyl egg to use Alpine

[v1.21.5-2] - 2025-05-15

  • Add project license
  • Enable LTO and set codegen-units to 1 for optimized builds
  • Build for musl Linux to be used in Pterodactyl
  • Remove build for Apple Intel because it is an aging platform
  • Assets is no longer bundled in the binary

[v1.21.5-2] - 2025-05-07

  • Bundle assets into the binary

[v1.21.5-1] - 2025-05-07

  • First official release of PicoLimbo.