Bevy – data-driven game engine

Bevy is a refreshingly simple data-driven game engine built in Rust.

This is free and open source software.

Features include:

• Data driven – all engine and game logic uses Bevy ECS, a custom Entity Component System:
  • Fast: Massively Parallel and Cache-Friendly. The fastest ECS according to some benchmarks.
  • Simple: Components are Rust structs, Systems are Rust functions.
  • Capable: Queries, Global Resources, Local Resources, Change Detection, Lock-Free Parallel Scheduler.
• 2D renderer – render real-time 2D graphics for games and apps:
  • Features: sprite sheets, dynamic texture atlases, cameras, textures, and materials.
  • Extensible: custom shaders, materials, and render pipelines.
  • Common Core: builds on top of Bevy’s Render Graph.
• 3D renderer – modern and flexible 3D renderer:
  • Features: lights, shadows, cameras, meshes, textures, materials, gltf loading.
  • Extensible: custom shaders, materials, and render pipelines.
  • Common Core: built on top of Bevy’s Render Graph.
• Render graph – compose custom render pipelines using a graph structure:
  • Parallel: Render Graphs are automatically rendered in parallel.
  • Modular: Build composable and reusable render logic using Render Graph nodes.
  • Backend Agnostic: Not tied to a specific graphics API.
• Animation – capable animation system:
  • Skeletal rig animation driven by an ECS-based joint API.
  • Play multiple animations at the same time by smoothly blending between them.
  • Use blend shapes / morph targets to animate vertices directly.
  • Import animations from GLTF files.
• UI – custom ECS-driven UI framework built specifically for Bevy:
  • Built directly on top of Bevy’s ECS, Renderer, and Scene plugins.
  • Compose UIs dynamically in code or declaratively using the Bevy Scene format.
  • Use a familiar “flex box” model to layout your UIs.
• Scenes – create, save, and load ECS worlds using Bevy’s Scene system:
  • Loading: Loading scenes preserves entity IDs (useful for save games).
  • Instancing: Instancing creates linked duplicates of scenes with new entity IDs.
  • Hot Reloading: Changes to scene files are automatically applied to running apps.
• Sound – load audio files and play them on demand:
  • Load audio files as assets.
  • Play audio Assets using audio entities.
• Hot reloading – Get instant feedback on your changes without app restarts or recompiles:
  • Asset changes are immediately reflected in running Bevy apps.
  • You can currently hot-reload scenes, textures, and meshes.
  • Any asset type can be integrated.
• Productive compile times:
  • With Bevy you can expect 0.8-3.0 seconds with the “fast compiles” configuration.
  • Compare that to other popular Rust game engines, which can take over 30 seconds to compile a single newline insertion.
• Cross-platform support – runs under Linux, Android, iOS, macOS, and Windows.

Website: bevy.org
Support:
Developer: Bevy Team
License: Apache License 2.0 or MIT License

Bevy is written in Rust. Learn Rust with our recommended free books and free tutorials.

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