bevy/README.md
2020-08-06 14:38:32 -07:00

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# [![Bevy](assets/branding/bevy_logo_light_small.svg)](https://bevyengine.org)
[![Crates.io](https://img.shields.io/crates/v/bevy.svg)](https://crates.io/crates/bevy)
[![license](https://img.shields.io/badge/license-MIT-blue.svg)](https://github.com/bevyengine/bevy/LICENSE)
[![Crates.io](https://img.shields.io/crates/d/bevy.svg)](https://crates.io/crates/bevy)
## What is Bevy?
Bevy is an open-source modular game engine built in Rust, with a focus on developer productivity and performance.
## WARNING
Bevy is still in the _very_ early stages of development. APIs can and will change. Important features are missing. Documentation is non-existent. Please don't build any serious projects in Bevy unless you are prepared to be broken by api changes constantly.
## Design Goals
* **Capable**: Offer a complete 2D and 3D feature set
* **Simple**: Easy for newbies to pick up, but infinitely flexible for power users
* **Data Focused**: Data-oriented architecture using the Entity Component System paradigm
* **Modular**: Use only what you need. Replace what you don't like
* **Fast**: App logic should run quickly, and when possible, in parallel
* **Productive**: Changes should compile quickly ... waiting isn't fun
## About
* **[Features](https://bevyengine.org):** A quick overview of Bevy's features.
* **[Roadmap](https://github.com/bevyengine/bevy/projects/1):** The Bevy team's development plan.
## Docs
* **[The Bevy Book](https://bevyengine.org/learn/book/introduction):** Bevy's official documentation. The best place to start learning Bevy.
* **[Bevy Rust API Docs](https://docs.rs/bevy):** Bevy's Rust API docs, which are automatically generated from the doc comments in this repo.
## Getting Started
We recommend checking out [The Bevy Book](https://bevyengine.org/learn/book/introduction) for a full tutorial. You can quickly try out the [examples](/examples) by cloning this repo and running the following command:
```sh
# Runs the "scene" example
cargo run --example scene
```
### Fast Compiles
Bevy can be built just fine using default configuration on stable Rust. However for really fast iterative compiles, you should enable the "fast compiles" setup by [following the instructions here](http://bevyengine.org/learn/book/getting-started/setup/).
## Libraries Used
Bevy is only possible because of the hard work put into these foundational technologies:
* [wgpu-rs](https://github.com/gfx-rs/wgpu-rs): modern / low-level / cross platform graphics library inspired by Vulkan
* [glam-rs](https://github.com/bitshifter/glam-rs): a simple and fast 3D math library for games and graphics
* [winit](https://github.com/rust-windowing/winit): cross platform window creation and management in Rust
* [spirv-reflect](https://github.com/gwihlidal/spirv-reflect-rs): Reflection API in rust for SPIR-V shader byte code
Additionally, we would like to thank the [Amethyst](https://github.com/amethyst/amethyst), [macroquad](https://github.com/not-fl3/macroquad), [coffee](https://github.com/hecrj/coffee), [ggez](https://github.com/ggez/ggez), and [Piston](https://github.com/PistonDevelopers/piston) projects for providing solid examples of game engine development in Rust. If you are looking for a Rust game engine, it is worth considering all of your options. Each engine has different design goals and some will likely resonate with you more than others.