⚠️ 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.

Keyboard Input Events

Print all keyboard events as they occur using the message system.

Introduction

While ButtonInput gives you the current key state, KeyboardInput messages give you the full event stream — every press and release as it happens.

from pybevy.prelude import *
from pybevy.input import KeyboardInput

Event Reader System

Read all keyboard events this frame and print them.

def print_keyboard_events(reader: MessageReader[KeyboardInput]) -> None:
    for event in reader.read():
        print(f"Key: {event.key_code}, State: {event.state}")

Running the App

@entrypoint
def main(app: App) -> App:
    return app.add_plugins(DefaultPlugins).add_systems(Update, print_keyboard_events)
 
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 keyboard_input_events.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.