Simple Bevy Tutorial

Bevy is a game engine built in Rust. This tutorial serves as a quick start for Bevy. We try to keep each part of the tutorial as simple as possible.

(Currently, most of this tutorial are for version 0.12.1 and some are for 0.15.x.)

Basic

• Setting Up
• A Bevy Project That Does Nothing
• Systems
  • They Are Functions In Bevy
  • The Default Scheduler For Systems
  • Executing Multiple Systems Simultaneously
  • Executing Multiple Systems In Order
  • Executing Multiple Systems Set By Set
• Resources
  • They Are Singleton Structs
  • Updating Resources
  • Removing Resources
• Entities And Components
  • They Are Like Tables
  • Searching For Entities By Components
  • Entities Can Have Different Components
  • Bundles Help Us Grouping Components Together
  • Searching For Entities By Optional Components
  • Searching For Entities With Filters
  • Searching For The Only Entity
  • Searching And Updating Entities
  • Searching And Removing Entities
  • Removing Entities Directly
• Too Many Parameters
  • Too Many Type Parameters For Queries
  • Too Many Parameters For Systems
• Too Many Systems
• Faster Compile Time

2D Rendering

• Windows
  • An App With A Window
  • The Default Scheduler For Windowed App
  • Initializing A Different Window
  • Changing The Window After Initialization
  • Low-Power Windows
  • Closing The Window On Esc Pressed
• Camera 2D
• The Background Color
• Images
  • Displaying Images
  • Obtaining Sizes Of Images
  • Resizing Images
• Transformation
  • Translation
  • Rotation
  • Scale
  • Combining Multiple Transformation
• Texts
  • Displaying Texts
  • Font Styles
  • Text Positions
• Shapes
  • Circles
  • Quads
  • Regular Polygons
  • Shapes With Transformation
• Materials
  • Colors
  • Textures
• Animated Transformation

Input

• Keyboards
  • Keyboard Input
  • Keyboard Just Input
  • Keyboard Events
• Mouses
  • Mouse Input
  • Mouse Events
  • Mouse Icon
• Timers
  • Engine Time
  • A Timer Running Once
  • A Timer Running Repeatedly
  • Easing
• Triggering An Event
• Custom Events

States

• Turning On/Off A System
• Running A System By An Event
• Using The State Machine
• Changing States
• Monitoring State Transition
• Running A System Only Once

3D Rendering

• Camera 3D
  • Camera Positions And Directions
  • Orthographic View
• Shapes
  • Cube
  • Box
  • UVSphere
  • Icosphere
  • Cylinder
  • Capsule
  • Torus
  • Plane
• Transformation
  • 3D Transformation
  • Hierarchical Transformation
• Lighting
  • Ambient Light
  • Directional Light
  • Point Light
  • Spot Light
  • Light Colors
  • Light Intensity
  • Shadow
• Physically Based Rendering
  • Base Colors
  • Base Color Textures
  • Metallic
  • Perceptual Roughness
  • Diffuse Transmission
  • Specular Transmission
  • Reflectance
  • Thickness
  • Index Of Refraction
  • Attenuation
  • Emissive
  • Emissive Textures
  • Alpha Mode
• Fog
  • Basic Fog
  • Sky
  • Moonlight
  • Sunlight
• Skipping The White Window

See Also

• Bevy - the GitHub of the Bevy game engine.
• Bevy Cheat Book - a reference-style book for the Bevy game engine.

Contributions

Pull requests for typos, incorrect information, or other ideas are welcome!

License

All code in the tutorial is provided under the MIT License.