Posts Tagged ‘StefanDilly’
[OxidizeConf2024] A Journey to Fullstack Mobile Game Development in Rust
From C# to Rust: A Transformative Journey
The mobile gaming industry, long dominated by Unity and C#, is witnessing a shift toward open-source technologies that promise enhanced performance and developer experience. Stefan Dilly, founder of RustUnit, shared his five-year journey of adopting Rust for mobile game development at OxidizeConf2024. Stefan, a seasoned developer and maintainer of the open-source GitUI, traced his progression from integrating Rust libraries in a Go backend and C# frontend to building fullstack Rust mobile games, culminating in the launch of Zoolitaire, a testament to Rust’s growing viability in gaming.
Initially, Stefan’s team at GameRiser in 2019 used Rust for AI calculations within a Go backend, interfacing with a Unity-based C# frontend via a cumbersome C FFI and JSON serialization. This approach, while functional, was verbose and slow, hampered by Go’s garbage collector and Unity’s long iteration times. The challenges prompted a pivot to a Rust-based backend in late 2019, leveraging the stabilization of async/await. Despite early hurdles, such as a buggy MongoDB driver, this transition yielded a more robust server for games like Wheelie Royale, a multiplayer motorcycle racing game.
Advancing Frontend Integration
The next phase of Stefan’s journey focused on improving frontend integration. By replacing JSON with Protocol Buffers (protobuf), his team streamlined communication between Rust and Unity, reducing memory overhead and improving performance. This allowed shared code between backend and frontend, enhancing maintainability. However, Unity’s limitations, such as slow reload times, spurred Stefan to explore fullstack Rust solutions. The advent of the Bevy game engine, known for its Entity Component System (ECS) and WebGPU rendering, marked a turning point, enabling native Rust game development without Unity’s constraints.
Stefan showcased Zoolitaire, a mobile game built entirely in Rust using Bevy, featuring deterministic game logic shared between client and server. This ensures fairness by validating gameplay on the server, a critical feature for competitive games. The open-source Bevy plugins developed by RustUnit, supporting iOS-specific features like in-app purchases and notifications, further demonstrate Rust’s potential to deliver a complete gaming ecosystem. These plugins, available on GitHub, empower developers to create feature-rich mobile games with minimal dependencies.
The Future of Rust in Gaming
Looking ahead, Stefan envisions Rust playing a significant role in game development, particularly as companies seek alternatives to Unity’s licensing model. The Bevy engine’s rapid growth and community support make it a strong contender, though challenges remain, such as limited console support and the learning curve for Rust’s borrow checker. Stefan’s experience onboarding junior developers suggests that Rust’s reputation for complexity is overstated, as its safety features and clear error messages facilitate learning, especially for those without preconceived coding habits.
The launch of a new racing game at OxidizeConf2024, playable via a browser, underscores Rust’s readiness for mobile gaming. Stefan’s call to action—inviting attendees to beat his high score—reflects the community-driven spirit of Rust development. By open-sourcing critical components and fostering collaboration through platforms like Discord, Stefan is paving the way for Rust to challenge established game engines, offering developers a performant, safe, and open-source alternative.