elevatorsaga.js

{
  init: function(elevators, floors) {
    var rotator = 0; // roundrobin var
    
    var minLoad = 0.0; // 0.6 for N moves challenge
    
    var upWaiting = [];
    var downWaiting = [];
    
    var randomInt = function (min, max) {
      return Math.floor(Math.random()*(max-min+1)+min);
    };
    _.each(elevators, function(elevator) {
      elevator.on("idle", function() {
        if (downWaiting.length > 0) {
          elevator.goToFloor(downWaiting.pop());
        } else if (upWaiting.length > 0) {
          elevator.goToFloor(upWaiting.pop());
        } else {
          elevator.goToFloor(0);
        };
      });
      elevator.on("floor_button_pressed", function(floorNum) {
        elevator.goToFloor(floorNum);
      });
      elevator.on("passing_floor", function(floorNum, direction) {
        var head;
        var tail;
        if (direction === "up") {
          if (elevator.loadFactor() <= 0.9 && upWaiting.indexOf(floorNum) > -1) {
            elevator.destinationQueue.push(floorNum);
            _.remove(upWaiting, function(num) { return num == floorNum; });
          };
          head = _.filter(elevator.destinationQueue, function(num) { return num >= floorNum; });
          tail = _.filter(elevator.destinationQueue, function(num) { return num < floorNum; });
          head.sort();
          tail.sort().reverse();
        } else {
          if ( elevator.loadFactor() <= 0.9 && downWaiting.indexOf(floorNum) > -1) {
            elevator.destinationQueue.push(floorNum);
            _.remove(downWaiting, function(num) { return num == floorNum; });
          };
          head = _.filter(elevator.destinationQueue, function(num) { return num <= floorNum; });
          tail = _.filter(elevator.destinationQueue, function(num) { return num > floorNum; });
          head.sort().reverse();
          tail.sort();
        };
        
        elevator.destinationQueue = _.uniq(head.concat(tail));
        elevator.checkDestinationQueue();
      });
      elevator.on("stopped_at_floor", function() {
        if (elevator.loadFactor() < minLoad){
          elevator.goToFloor(elevator.currentFloor(), true);
        };
      });
    });
    _.each(floors, function(floor) {
      floor.on("down_button_pressed", function() {
        //elevators[rotator++ % elevators.length].goToFloor(floor.level);
        downWaiting = _.uniq(downWaiting.push(floor.level));
      });
      floor.on("up_button_pressed", function() {
        //elevators[rotator++ % elevators.length].goToFloor(floor.level);
        upWaiting = _.uniq(upWaiting.push(floor.level));
      })
    });
  },
  update: function(dt, elevators, floors) {
    // We normally don't need to do anything here
  }
}