enable gamepad support on slither.io game. works with PS4 and similar controllers.

sliter-io-gamepad.js

javascript:!function(){if("getGamepads"in navigator){var t=function(){var e=navigator.getGamepads()[0];if(e){var a=e.axes[0],i=e.axes[1];Math.sqrt(a*a+i*i)<.1&&(a=i=0),xm=100*a,ym=100*i,setAcceleration(e.buttons[0].value);var n=mc.getContext("2d");n.save(),n.beginPath(),n.strokeStyle=e.buttons[0].value?"white":"lightGreen",n.arc(xm+mc.width/2,ym+mc.height/2,8,0,2*Math.PI),n.stroke(),n.restore()}window.requestAnimationFrame(t)};t()}}(); void(0);