Elevator Saga - The elevator programming game - My Solutions

elevatorSaga.js

// My Reference Docs

// http://play.elevatorsaga.com/#challenge=5
// http://play.elevatorsaga.com/documentation.html#docs
// https://www.codecademy.com/articles/glossary-javascript

// Passes through level 4
// Sometimes passes 6 
// Also passes: 8, 9, 16
{
    init: function(elevators, floors) {
        log = function() { return console.log.apply(console, arguments); };
        
         function remove(arr, item) {
          for(var i = arr.length; i--;) {
              if(arr[i] === item) {
                  arr.splice(i, 1);
              }
          }
        }

        function updateIndicator(elevator) {
            // Always "stopped"? Need to determine destination from destination queue?
            if(elevator.destinationDirection() == "up") {
                elevator.goingDownIndicator(false).goingUpIndicator(true);
            } else if(elevator.destinationDirection() == "down") {
                elevator.goingDownIndicator(true).goingUpIndicator(false);
            } else {
                // If stopped, will go anywhere.
                elevator.goingDownIndicator(true).goingUpIndicator(true);
            }
        }

        function leastBusy() {
            var least = elevators[0];
            for (var i = elevators.length - 1; i >= 0; i--) {
                if(elevators[i].destinationDirection() == "stopped") {
                    least = elevators[i];
                    break;
                }

                var ll = least.destinationQueue ? 0 : least.destinationQueue.length;
                var itL = elevators[i].destinationQueue ? 0 : elevators[i].destinationQueue.length
                if(ll > itL) {
                    least = elevators[i].destinationQueue
                }
            }
            return least;
        }

        // ELEVATOR EVENTS
        elevators.forEach(function(elevator) { 
            
            elevator.on("idle", function() {
                log("elevator-"+elevators.indexOf(elevator)+".idle()");
                updateIndicator(elevator);

            });

            elevator.on("floor_button_pressed", function(floorNum) {
                log("elevator-"+elevators.indexOf(elevator)+".floor_button_pressed()")
                this.goToFloor(floorNum);
                log("elevator-"+elevators.indexOf(elevator)+".destinationQueue="+this.destinationQueue);
            });

            elevator.on("passing_floor", function(floorNum, direction) {
                var floor = floors[floorNum];

            });

            elevator.on("stopped_at_floor", function(floorNum) {
                var queue = this.destinationQueue;
                remove(queue, floorNum)
                updateIndicator(elevator);
            });
        });

        // FLOOR EVENTS
        floors.forEach(function(floor) { 
            floor.on("up_button_pressed", function() {
                log("floor-" + this.floorNum() + ".up_button_pressed()")
                var elevator = leastBusy(elevators);
                var queue = elevator.destinationQueue;
                elevator.goToFloor(this.floorNum())

            });
            floor.on("down_button_pressed", function() {
                log("floor-" + this.floorNum() + ".down_button_pressed()")
                var elevator = leastBusy(elevators);
                var queue = elevator.destinationQueue;
                elevator.goToFloor(this.floorNum())
            });
        });
    },
        update: function(dt, elevators, floors) {
            // We normally don't need to do anything here
        }
}

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