name: gen-protobuf
description: Regenerate the C# protobuf client files after editing any .proto file in bnet-messages/src/main/proto/. Use this whenever a .proto message definition changed, before committing — otherwise the Godot client (bestia-client) keeps stale generated code that no longer matches the schema. Triggers on: .proto, protobuf, protoc, Envelope, CMSG, SMSG, bnet-messages, regenerate proto, gen-protobuf.
Regenerate Protobuf Messages
Run this skill after modifying any .proto file in bnet-messages/src/main/proto/ to regenerate the C# files used by the Godot client.
How to run
Run the batch file from anywhere — it does not need bnet-messages/ to be the
current directory:
bnet-messages/gen-protobuf.bat
protoc.exe lives in bnet-messages/ alongside the script. The script resolves it
(and every proto/output path) via %~dp0, its own location, so it does not rely
on protoc.exe being on PATH or on the caller's working directory.
What it does
- Clears
bestia-client/src/Bnet/Proto/
- Runs one hardcoded
protoc.exe invocation per .proto file (a manually maintained
list inside the .bat, not a glob over the proto directory)
- Writes the regenerated C# classes back to
bestia-client/src/Bnet/Proto/
Important notes
- Brand-new
.proto file: add a line to gen-protobuf.bat first. The script does
not discover files automatically — if you create a new .proto and don't add its
protoc.exe line, the script runs successfully but silently produces no C# class
for it (no error, no warning). Only editing an existing .proto file needs no
.bat change.
- The Kotlin/JVM classes (used by the zone-server) are generated at build time by Gradle via the
com.google.protobuf plugin — no manual step needed there.
- The C# output files are committed to the repo; always regenerate and commit them together with any
.proto change.
- After regenerating, verify the expected types exist in the output (e.g.
grep COMMAND bestia-client/src/Bnet/Proto/ChatCmsg.cs).
