GyrateHit A bare-bones game for time-killing. Play the Demo References: https://coogyloop.com/ https://jsbin.com/quhujowota/1/edit?html,js,output http://lea.verou.me/2012/02/moving-an-element-along-a-circle/ https://css-tricks.com/get-value-of-css-rotation-through-javascript/ https://stackoverflow.com/a/47653643