Ecosyste.ms: Awesome

An open API service indexing awesome lists of open source software.

Awesome Lists | Featured Topics | Projects

https://github.com/bestogames/bestonet

BestoNet is a custom rollback networking solution developed for the fighting game Idol Showdown. Built in C# for Unity, it integrates with Facepunch Steamworks to provide a robust and efficient rollback implementation.
https://github.com/bestogames/bestonet

besto bestogames bestonet csharp godot idolshowdown netcode rollback rollback-netcode unity

Last synced: 3 months ago
JSON representation

BestoNet is a custom rollback networking solution developed for the fighting game Idol Showdown. Built in C# for Unity, it integrates with Facepunch Steamworks to provide a robust and efficient rollback implementation.

Awesome Lists containing this project

README 

        



[![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT)

[![PRs Welcome](https://img.shields.io/badge/PRs-welcome-brightgreen.svg?style=flat)](docs/CONTRIBUTING.md)

[![Maintenance](https://img.shields.io/badge/Maintained%3F-yes-green.svg)](https://github.com/bryanpaik/isd-rollback/graphs/commit-activity)



BestoNet is a custom rollback networking solution developed for the fighting game [Idol Showdown](https://store.steampowered.com/app/1742020/Idol_Showdown/). Built in C# for Unity, it integrates with Facepunch Steamworks to provide a robust and efficient rollback implementation.



This is a work in progress as a library, and won't work right out the box



## 📚 Documentation



- [Contributing Guide](docs/CONTRIBUTING.md)

- [Code of Conduct](docs/CODE_OF_CONDUCT.md)

- [Development Roadmap](docs/ROADMAP.md)



## Background



Originally we used Unity GGPO but there were some issues.

- Unplayable connections at long distances (experiencing ~7 frames of rollback)

- Maintenance difficulties due to GGPO's C++ codebase

- System instability during poor network conditions

- Using GGPO required a relay system that added extra latency to online matches



## Core Features



### Rollback Management

- **Speculative Frame Saving**: Saves CPU time and preventing 7 frame rollbacks

    - Currently saves the midpoint frame, confirm frame, and end frame

- **Input Prediction**: Will predict the next input using the previously received input

- **Rift Management**: Many different options to deal with one sided rollback and game syncing

- **Reliable Input Messaging**: Maintains a 7-frame input buffer to handle packet loss and out-of-order delivery



## Implementation Requirements



1. Frame Timing: Idol Showdown currently uses a separate thread as a timer.

2. Spectator: The current implementation contains a call to send confirmed frame inputs to a spectator buffer

3. State management system: Deterministic game logic is required. For efficiency reasons, we recommend avoiding using byte[] with BinaryWriter/Reader



## Configuration



![Rollback Settings](assets/rollback_settings.png)



**Current Unity Configuration Settings**



**Note**: The MaxRollbackFrames setting currently shows 4 frames but effectively provides ~8 frames of rollback in Idol Showdown. This discrepancy is known but functional.



## Credits



This implementation draws inspiration from:

- MK/Injustice GDC presentation

- Zinac's rollback implementation guide

- GekkoNet's Rollback System



Special thanks to [Rin Iota](https://x.com/sss_iota_sss) for developing the original networking foundation that enabled ISD Rollback's creation.



## Contributing



This is an open-source project accepting community contributions. Please read our [Contributing Guide](docs/CONTRIBUTING.md) and [Code of Conduct](docs/CODE_OF_CONDUCT.md) before submitting pull requests.



## License



This project is licensed under the MIT License - see the [LICENSE](LICENSE) file for details.