gistfile1.js

wc.Chunk = function(x, z, data) {
    this.x = x / 16;
    this.z = z / 16;
    this.size = 16*128*16;
    
    data = atob(data);
    
    function byte(pos) {
        return data.charCodeAt(pos);
    }
    
    function nibble(pos) {
        var b = byte(Math.floor(pos/2));
        return (pos % 2) ? b >> 4 : b & 0xf;
    }
    
    this.data = [];
    
    for(var i = 0; i < this.size; i++)
        this.data[i] = /*type*/byte(i) | /*dataVal*/(nibble(this.size*2 + i) << 8) | /*light*/(nibble(this.size*3 + i) << 12) | /*skyLight*/(nibble(this.size*4 + i) << 16);
}