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var main = new Box('lightgrey'), a = main.addblock("center","top",50,25), b = main.addblock("center","center",50,50,"lightgrey","Loading..."); console.log("Preloading started..."); image.preload('cow.png'); image.await('preloading_completed'); sound.preload('cow.mp3','mooh'); sound.await('preloading_completed'); a.text("Click the cow!"); b.clear(); b.setimage("cow.png",100); b.await('click'); b.move(10); sound.play('mooh'); await('soundended'); b.move(10); b.await(2000); a.clear(); b.text("Mooh said the cow!");