https://github.com/olso/go-wasm-cat-game-on-canvas-with-docker 🧶 https://olso.space 🧶 https://twitter.com/olso_uznebolo

cat_game.3.go

func updatePlayer(event js.Value) {
	mouseX := event.Get("clientX").Float()
	mouseY := event.Get("clientY").Float()
	
	// basically threads/async/parallelism
	// TODO difference with Web Workers
	// TODO difference with Service Workers
	// https://gobyexample.com/goroutines
	go log("mouseEvent", "x", mouseX, "y", mouseY)

	// next gist
	if isLaserCaught(mouseX, mouseY, gs.laserX, gs.laserY) {
		go playSound()
	}
}

// no this isn't some magic; it's straight from HTML5
// https://developer.mozilla.org/en-US/docs/Web/API/HTMLAudioElement#Basic_usage
func playSound() {
	beep.Call("play")
	window.Get("navigator").Call("vibrate", 300)
}

// basically a rest+spread from javascript
// ...interface{} is more or less `any` from Typescript
// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Functions/rest_parameters#Description
func log(args ...interface{}) {
	window.Get("console").Call("log", args...)
}