kyubu

Kyubu

Minecraft protocol implementation, provides parsing, serializing and chunk decompression.

Currently, Kyubu is separated into a few logical parts:

• kyubu/cmd - Where protocol_generator et al live
• kyubu/format - the Chat format, lifted from thinkofdeath/steven
• kyubu/modern/minimal - Minimal modern (1.8.3/47) packet definitions Enough for Kurafuto to function, but not everything
• kyubu/packets - packet parser/serializer stuff

Extending Kyubu

Should you wish to actually use Kyubu (and I can't blame you, who wouldn't!), you can extend the functionality of the parser easily by simply registering additional packets with the parser (kyubu/packets.Register).

For a working example, see kyubu/cmd/protocol_generatortest/test_proto.go.

The general idea is this:

1. Create a type that implements the kyubu/packets.Packet interface.
2. Add a go generate line to your file:
   • //go:generate protocol_generator -file=$GOFILE -direction=x -state=x -package=x
   • go get github.com/kurafuto/kurafuto/cmd/protocol_generator to install it.
3. Run go generate and ensure the x_proto.go file looks like you expect.
4. Write some tests to ensure your packet works as intended (and preferably won't break existing packets!).

protocol_generator

To save on time, rather than the old method of reflection, Kyubu now ships with a custom go generate-compatible command that makes your packet parser/serializer cruft for you. Look at cmd/protocol_generator/test/test.go for an example.

NOTE: It's heavily based off of the protocol_generator from thinkofdeath/steven.

Tests

Tests are shipped for kyubu/packets, but as Kyubu is going through breaking changes to work with Modern, it may not pass.

You can run them with the standard go test in the above-mentioned packages. If you make additions or revisions to the code, make sure the tests all pass, and add any new tests for features/packets you've added.