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  1. First of all, let me say that I love the apparent philosophy of PixiJS: do rendering well, and let userland be userland. Awesome. I'm playing with different ways of handling interactions that originate within the scene graph. I'm not a fan of declaring interaction logic on sprites themselves (e.g., using the '.on' method and callbacks). Instead, I'd prefer something that functions more like event delegation: a single listener on my scene that pipes out all relevant events for me to slice and dice later. Currently, I'm experimenting with using the Sprite prototype to feed all events into an RxJS observable. More concretely: // Create a new observable var pixiEventStream = new Rx.Subject(); // Hack into Sprite's prototype, redirecting all 'mousedown' and 'mouseup' events into the observable var toStream = (e) => pixiEventStream.onNext(e); PIXI.Sprite.prototype = Object.assign(PIXI.Sprite.prototype, { mousedown: toStream, mouseup: toStream, // etc for all events PIXI detects }); // ... // Later, I create a bunch of sprites, some with {interactive: true} // But I *don't* specify any .on callbacks // ... // Later, I can deal with the events // Here, I'm filtering out only the mousedown events for further processing var mouseDownEvents = pixiEventStream.filter(e => e.type === "mousedown"); mouseDownEvents.subscribe((e) => { var sprite = e.target; // do something with a sprite on mousedown }); Is there a less hacky way of doing this? Has anyone tried something similar? Cheers!