⚠️ Beta State

PyBevy is in an early and experimental stage. The API is incomplete, subject to breaking changes without notice, and you should expect bugs. Many features are still under development.

Scene Spawn System

Spawn a scene from a glTF file using SceneRoot.

Introduction

Scenes bundle multiple entities together. Load a scene from a glTF file and spawn it into the world. All entities in the scene are created with their meshes, materials, and hierarchy.

from pybevy.prelude import *

Setup

def setup(commands: Commands, asset_server: AssetServer) -> None:
    commands.spawn(SceneRoot(asset_server.load_scene("models/FlightHelmet/FlightHelmet.gltf#Scene0")))
    commands.spawn(
        DirectionalLight(illuminance=5000.0, shadows_enabled=True),
        Transform.IDENTITY.looking_at(Vec3(-1.0, -2.0, -1.0), Vec3.Y),
    )
    commands.spawn(Camera3d(), Transform.from_xyz(0.7, 0.7, 1.0).looking_at(Vec3(0.0, 0.3, 0.0), Vec3.Y))

Running the App

@entrypoint
def main(app: App) -> App:
    return app.add_plugins(DefaultPlugins).add_systems(Startup, setup)
 
if __name__ == "__main__":
    main().run()

Running this example

Use PyBevy's hot reload feature to run and develop this example. If you don't have PyBevy installed, check out the Quick Start guide.

$pybevy watch scene_spawn_system.py

The code will reload automatically when you make changes to the file.

From Python to Rust

Notice how the core concepts in the code—Commands, Assets, App, and Systems—are identical to the original Bevy example?

This is the power of pybevy! It lets you learn Bevy's powerful, data-driven architecture in friendly Python.

When your project grows and you're ready for maximum, native performance, you'll already know the concepts to start writing systems in Bevy Engine with Rust.