double

// useless, but i want to keep it somewhere in case i need it later

// doubles the size of the map, so it doesn't feel so tight
        private function doubleSize():void {
            var newMap:Array = [];

            for (var i:int = 0; i < this.map.length; i++ ) {

                newMap[2*i-1] = [];
                newMap[2*i] = [];

                for (var k:int = 0; k < this.map[i].length; k++ ) {
                    newMap[2*i-1][2*k-1] = this.map[i][k];
                    newMap[2*i-1][2*k] = this.map[i][k];
                    newMap[2*i][2*k-1] = this.map[i][k];
                    newMap[2*i][2*k] = this.map[i][k];
                }
            }

            this.map = newMap;
        }