Developer testing solution

This is the code I'm currently using for testing when developing elevatorsaga.

{
    init: function(elevators, floors) {
        var rotator = 0;
        _.each(floors, function(floor) {
            floor.on("up_button_pressed down_button_pressed", function() {
                var elevator = elevators[(rotator++) % elevators.length];
                elevator.goToFloor(floor.level);
            }); 
        });
        _.each(elevators, function(elevator) {
            elevator.on("floor_button_pressed", function(floorNum) {
                elevator.goToFloor(floorNum);
            });
            elevator.on("idle", function() {
                elevator.goToFloor(0);
            });
        });
    },
    update: function(dt, elevators, floors) {
    }
}

Things to note

I introduced a rotator variable to use all the elevators in a round-robin fashion, which sort of distributes the workload, although in a pretty inefficient manner. This rotator variable is only used when travellers press buttons on the floors, obviously.

The rest of the code is pretty obvious - go to the floor that each traveller wants to go to, and go to floor 0 when idle - floor 0 is where most travellers will appear.

Also, instead of for loops, I'm using Lo-Dash to iterate over all the elevators and floors. It has a more convenient syntax and results in more expressive code in my opinion.