Bevy Replicon

Server-authoritative networking crate for the Bevy game engine.

If you are new to networking, see glossary and What kind of networking should X game use?.

Features

• Automatic world replication.
• Remote events and triggers.
• Control over client visibility of entities and events.
• Abstracts game logic to support singleplayer, client, dedicated server, and listen server configurations simultaneously.
• Works with no_std.
• No builtin I/O, can be used with any messaging library. See messaging backends for already available integrations.
• Replication into scene to save server state.
• Customizable serialization and deserialization even for types that don't implement serde traits (like Box<dyn Reflect>).
• Extensible architecture. See ecosystem.

Getting Started

Check out the quick start guide.

For examples navigate to the bevy_replicon_example_backend (because you need I/O in order to run them).

Have any questions? Feel free to ask in the dedicated bevy_replicon channel in Bevy's Discord server.

Ecosystem

We have a growing ecosystem of crates that can be integrated with Replicon or built on top of it. Networking is quite complex, and maintaining everything in a single crate would be a nightmare. So we are trying to provide an extensible core and encourage users to build their own abstractions as separate crates.

[!WARNING] Ensure that your bevy_replicon version is compatible with the used crate according to semantic versioning.

Messaging backends

• bevy_replicon_renet - integration for bevy_renet. Maintained by the authors of this crate.
• bevy_replicon_renet2 - integration for bevy_renet2. Includes a WebTransport backend for browsers, and enables servers that can manage multi-platform clients simultaneously.
• bevy_replicon_quinnet - integration for bevy_quinnet.
• aeronet_replicon - integration for aeronet. Works on any IO layer supported by aeronet_io, but requires aeronet_transport.

Interpolation and/or rollback

• bevy_replicon_snap - adds snapshot interpolation and client-side prediction.

Visibility

• bevy_replicon_attributes - adds ergonomic visibility control through client attributes and entity/event visibility conditions. An extension of this crate's raw client visibility API.

Miscellaneous

• bevy_replicon_repair - preserves replicated client state across reconnects.
• bevy_bundlication - adds registration of replication groups using a bundle-like api.

Unmaintained

• bevy_timewarp - a rollback library that buffers component state. See this instruction about how to integrate.

Bevy compatibility

License

Licensed under either of Apache License, Version 2.0 or MIT License at your option.