Slither.io PS4

//Added enter support (by pressing x or options on home screen

// Tested in Chrome.
// Left stick to steer, X to accelerate

(function () {
if (!(“getGamepads” in navigator)) {
return;
}
var pollPad = function() {
var ps4 = navigator.getGamepads()[0];
if (ps4) {
var x = ps4.axes[0], y = ps4.axes[1];

if (Math.sqrt(x*x+y*y) < 0.1) x = y = 0; // deadzone radius
xm = 100 * x;
ym = 100 * y;

var xbutton = ps4.buttons[0].value;

setAcceleration(xbutton);

// map ps4 options key to enter button
var options = navigator.getGamepads()[0].buttons[9].value;
if(options || xbutton )
{
// start game
play_btn.elem.onclick();
}

var b = mc.getContext(“2d”);
b.save();
b.beginPath();
b.strokeStyle = ps4.buttons[0].value ? “white” : “lightGreen”;
b.arc(xm + mc.width/2, ym+mc.height/2, 8, 0, Math.PI * 2);
b.stroke();
b.restore();
}
window.requestAnimationFrame(pollPad);
};
pollPad();
})();