These represent successive solutions to the [Elevator Saga](http://play.elevatorsaga.com/)

elevator-sol-6-and-less.js

{
    init: function(elevators, floors) {
        var waitingFloors = [];

        floors.forEach(function(floor) {
            floor.on("up_button_pressed", function() {
                waitingFloors.push(floor.floorNum());
            });
            floor.on("down_button_pressed", function() {
                waitingFloors.push(floor.floorNum());
            });
        });

        elevators.forEach(function(elevator) {
            elevator.on("idle", function() {
                if (elevator.getPressedFloors().length === 0) {
                    if (waitingFloors.length === 0) {
                        elevator.goToFloor(0);
                    } else {
                        var targetFloor = waitingFloors[0];
                        var newWaitingFloors = [];
                        waitingFloors.forEach(function(fl) { if(fl === targetFloor) {} else { newWaitingFloors.push(fl); } })
                        waitingFloors = newWaitingFloors;
                        elevator.goToFloor(targetFloor);
                    }
                } else {
                    elevator.goToFloor(elevator.getPressedFloors()[0]);
                }
            });
        });
    },

    update: function(dt, elevators, floors) {
        // We normally don't need to do anything here
    }
}