R To Split

// ==UserScript==
// @name         R-To-Split
// @namespace    R-To-Split
// @version      1.0
// @description  R Key to Split
// @author       SYx
// @match        http://agar.io/*
// @grant        none
// @run-at       document-end
// ==/UserScript==

(function() {
    var amount = 1;
    var duration = 1; //ms

    var overwriting = function(evt) {
        if (evt.keyCode === 82) { // KEY_R
            for (var i = 0; i < amount; ++i) {
                setTimeout(function() {
                    window.onkeydown({keyCode: 32}); // KEY_SPACE
                    window.onkeyup({keyCode: 32});
                }, i * duration);
            }
        }
    };

    window.addEventListener('keydown', overwriting);
})();