basalt-types

Primitive Minecraft protocol types with zero-copy serialization for the Basalt Minecraft server.

Types

This crate defines the foundational wire types used across the Minecraft protocol:

• VarInt / VarLong -- variable-length integer encoding (1-5 / 1-10 bytes)
• Position -- packed 64-bit block coordinates (x:26, z:26, y:12)
• UUID -- 128-bit identifier encoded as two big-endian u64 values
• Slot -- item stack with optional NBT component data
• TextComponent -- rich text for chat, titles, and UI (NBT-encoded)
• NBT -- in-house Named Binary Tag implementation (compound, list, tags)
• Angle -- single-byte rotation (0-255 maps to 0-360 degrees)
• BitSet -- variable-length bit array for chunk masks
• Identifier -- namespaced resource identifier (namespace:path)
• Vectors -- Vec2f, Vec3f, Vec3f64, Vec3i16

Traits

Three traits define the serialization contract:

• Encode -- serialize a value to bytes
• Decode -- deserialize a value from bytes
• EncodedSize -- compute exact wire size for buffer pre-allocation

All primitive Rust types (bool, u8-u64, i8-i64, f32, f64) and protocol strings implement these traits with big-endian byte order.

Usage

use basalt_types::{VarInt, Encode, Decode, EncodedSize};

let mut buf = Vec::new();
VarInt(300).encode(&mut buf).unwrap();

let (decoded, bytes_read) = VarInt::decode(&buf).unwrap();
assert_eq!(decoded.0, 300);
assert_eq!(bytes_read, VarInt(300).encoded_size());

License

Licensed under the Apache License, Version 2.0. See LICENSE for details.