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`AnvilLevelInfo::read_world_info` validated the version tags and then returned `LevelData::default(Seed(0))`, so level name, difficulty, spawn, world border and data packs were discarded on every start, and the writer emitted only `DataVersion`, `version` and `LastPlayed`, truncating the rest on save. A world whose seed lives in level.dat's legacy `Data.WorldGenSettings` compound, as converters such as Chunker emit, therefore loaded with seed 0 and generated foreign terrain into its existing region files. level.dat is now read and written tag by tag through pumpkin-nbt, every field falling back to its vanilla default, so a missing optional tag such as `Version.Series` no longer costs the whole file. Saving merges into the existing `Data` compound, so tags Pumpkin does not model survive. A world with no seed in either file aborts startup instead of silently regenerating, and the seed is mirrored into level.dat, the only world file that is backed up. Version tags are re-stamped with the current constants on save so level.dat stays consistent with the chunks Pumpkin writes.
Pumpkin
Pumpkin is a Minecraft server built entirely in Rust, offering a fast, efficient, and customizable experience. It prioritizes performance and player enjoyment while adhering to the core mechanics of the game.
Goals
- Performance: Leveraging multi-threading for maximum speed and efficiency.
- Compatibility: Supports the latest Java & Bedrock Minecraft server version while adhering to Vanilla game mechanics.
- Security: Prioritizes security by preventing known security exploits.
- Flexibility: Highly configurable, with the ability to disable unnecessary features.
- Extensibility: Provides a foundation for plugin development.
Important
Pumpkin is currently under heavy development.
Features
- Configuration (toml)
- Tracking: Protocol
- Server Status/Ping
- Encryption
- Packet Compression
- Java Edition
- Bedrock Edition (W.I.P)
- ...
- Tracking: World
- Player Tab-list
- Scoreboard
- World Loading
- World Time
- World Borders
- World Saving
- Lighting
- Entity Spawning
- Bossbar
- Chunk Loading (Vanilla, Linear, Pump)
- Chunk Generation
- Chunk Saving (Vanilla, Linear, Pump)
- Redstone
- Liquid Physics
- ...
- Tracking: Player
- Skins
- Teleport
- Movement
- Animation
- Inventory
- Combat
- Experience
- Hunger
- Off Hand
- Advancements (W.I.P)
- Eating
- ...
- Entities
- Non-Living (Minecart, Eggs...) (W.I.P)
- Entity Effects
- Players
- Mobs (W.I.P)
- Animals (W.I.P)
- Entity AI
- Boss (W.I.P)
- Villagers (W.I.P)
- Entity Saving
- Server
- Proxy
- Bungeecord
- Velocity
How to run
See our Quick Start guide to get Pumpkin running.
Contributions
Contributions are welcome! See CONTRIBUTING.md
Docs
Pumpkin's documentation can be found at https://pumpkinmc.org/
Communication
Consider joining our Discord server to stay up-to-date on events, updates, and connect with other members.
Funding
If you want to fund me and help the project, check out the Donation Page.