Parrot

(WIP)

Parrot is a library of modular components for building cross-platform multiplayer games.

Parrot makes it possible—and as easy as possible—for you to write networked gameplay code that's nearly identical to non-networked gameplay code.

Simply pick and choose the features you want, and Parrot will do it all seamlessly behind the scenes.

(Planned) Features

In no particular order...

sending

• no internal IO (use whatever socket you want)
• connections
  • connect / disconnect events
  • multiple channels (send unreliable or reliable, receive unordered, ordered (reliable-only), or sequenced)
  • heartbeats and idle timeout
• somewhere to hook custom authentication
• metrics

syncing

• user choice between authoritative and deterministic state replication
• lightweight snapshots with lightning-fast (de)compression and (de)serialization
• multiple players per connection (splitscreen, bots)
• lag compensation
  • client-side prediction
  • server-side rewind
• snapshot interpolation
  • smoothly correct errors for rendering predicted entities
  • correctly handle teleportation
• interest management (server can filter what it sends each client)
  • scope and prioritization
    • age-based
    • proximity-based
    • other (field-of-vision, gameplay rules, etc.)
• "RPCs" (one-off inputs and requests, e.g. "respawn me," "choose this loadout", etc.)
• metrics

integration

• bevy

License

Parrot is dual-licensed under either of Apache License, Version 2.0 or MIT license at your option.

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in this project by you, as defined in the Apache-2.0 license, shall be dual-licensed as above, without any additional terms or conditions.