React-Phaser
Demo https://github.com/4rokis/react-phaser-example
Demo
Docs
There are multiple reasons why you might want to combine React with Phaser. One of them being that you have a bigger React application and only a certain scene/part is a canvas.
React application then can either passively render a canvas or actively send new data to it.
React application re-renders multiple times and that is not desired for canvas base library. To mitigate that we are creating a component that will bridge those two environments.
export const ROOT_ID = 'root-id'
const Root = memo(() => {
return <div id={ROOT_ID} />
})
class PhaserApp {
constructor(id) {
this.game = new Phaser.Game({
type: Phaser.AUTO,
width: 1000,
height: 1000,
parent: ROOT_ID,
})
}
destroy = () => {
this.game.destroy(true)
}
}
export const PhaserBridge = () => {
const app = useRef(null)
useLayoutEffect(() => {
app.current = new PhaserApp(ROOT_ID)
return () => {
app.current?.destroy()
}
}, [])
return <Root />
}
useLayoutEffect will ensure that PhaserApp is initialized only once and is destroyed on unmount.
We can upgrade the bridge to include an update logic to emit an event to Phaser.
export class PhaserApp {
update = (direction) => {
this.game.events.emit('update', direction)
}
}
export const PhaserBridge = ({ direction }) => {
useEffect(() => {
if (!app.current) {
return
}
app.current.update(direction)
}, [direction])
}
PhaserBridge now includes a useEffect hook that waits for the prop direction to change. Once changed it will trigger the update method with it. The update method then emits an update event to the whole phaser app. A phaser scene can then listen to it and update.
this.game.events.on('update', (direction) => {
this.direction = direction
})
React app just needs to render the bridge with particular properties.
function App() {
const [direction, setDirection] = useState(null)
return (
<div className="App">
<AppBridge direction={direction} />
</div>
);
}
This solution works well with PIXI.js or a custom canvas solution.
Kudos
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