Elevator Saga Challenge #2

ElevatorSagaChallenge2.js

{
    init: function(elevators, floors) {
        var elevator = elevators[0]; // Let's use the first elevator
        elevator.on("idle", function() {
            // The elevator is idle, so let's go to all the floors (or did we forget one?)
            elevator.goToFloor(2);
        });
        elevator.on("floor_button_pressed", function(floorNum) {
            elevator.goToFloor(floorNum, true);
        });
        elevator.on("passing_floor", function(floorNum, direction) {
            var stopAtFloor = false;
            elevator.destinationQueue = elevator.destinationQueue.filter(function (n, i) {
                if (n == floorNum) { 
                    stopAtFloor = true;
                }
                return n != floorNum;
            });
            if (stopAtFloor) {
                elevator.checkDestinationQueue();
                elevator.goToFloor(floorNum, true);                
            }
        });
        function initFloor(floor) {
            floor.on("up_button_pressed", function() {
                // Maybe tell an elevator to go to this floor?
                elevator.goToFloor(floor.floorNum());
            });
            floor.on("down_button_pressed", function() {
                // Maybe tell an elevator to go to this floor?
                elevator.goToFloor(floor.floorNum());
            });
        }
        for (var floorNum = 0; floorNum < floors.length; floorNum++) {
            var floor = floors[floorNum];
            initFloor(floor);
        }        
    },
    update: function(dt, elevators, floors) {
        // We normally don't need to do anything here
    }
}