Minecraft Seed

seed('2147483647');

function seed(str) {
    // Minecraft Seed
    var x = str.charCodeAt(0)*31 + str.charCodeAt(1)||str.charCodeAt(0)||Math.floor((Math.random()-0.5)*4294967296);
    for (i = 1;i < str.length-1; i++) {
        x = x*31 + str.charCodeAt(i+1);
    }
    return (/\d/.test(str))?(Number(str)>2147483646)?Number(str)-4294967295:Number(str):(x>2147483646)?x-4294967295:x;
}