elevator saga elevator.js

{
    init: function(elevators, floors) {
        function optimizeDestinationQueue(elevator) {
            queue = elevator.destinationQueue.sort();
            console.log("starting queue: " + queue);
            queue = queue.reduce(function (a, b) {
                console.log("a: " + a);
                if (a.indexOf(b) !== -1) {
                    return a;
                }
                else {
                    return a.concat([b]);
                }
            }, []);
    
            console.log("optimized queue: " + queue);
            elevator.destinationQueue = queue;
            elevator.checkDestinationQueue();
        }
        function bestElevatorForFloor(floor) {
            var elevatorsAlreadyVisiting = elevators.filter(function (elevator) {
                return elevator.destinationQueue.indexOf(floor.floorNum()) !== -1;
            }).sort(function (e1, e2) {
                return e1.loadFactor() - e2.loadFactor();
            });
            
            console.log(elevatorsAlreadyVisiting.map(function (e) { return e.loadFactor();}));
            
            if (elevatorsAlreadyVisiting.length > 0) {
                return elevatorsAlreadyVisiting[0];
            }
                
            function distToFloor(e) {
                return Math.abs(e.currentFloor() - floor.floorNum()) * e.loadFactor();
            }
                
            var sorted = elevators.sort(function (e1, e2) {
                return distToFloor(e1) - distToFloor(e2);
            });
            
            return sorted[0];
        }
        
        floors.forEach(function (floor) {
            var buttonHandler = function() {
                var selectElevator = bestElevatorForFloor(floor);
                
                selectElevator.goToFloor(floor.floorNum());
               // optimizeDestinationQueue(selectElevator);
            };
            
            floor.on("down_button_pressed", buttonHandler);
            floor.on("up_button_pressed", buttonHandler);
        });
        
        var elevatorFloor = 0;
        elevators.forEach(function (elevator) {
            elevator.on("idle", function() {
                // The elevator is idle, so let's go to all the floors (or did we forget one?)
                //elevator.goToFloor(elevatorFloor);
                
                elevatorFloor = (elevatorFloor + 1) % floors.length;
            });
        
            elevator.on("floor_button_pressed", function(floorNum) {
                elevator.goToFloor(floorNum);
                optimizeDestinationQueue(elevator);
            });
        });
    },
    update: function(dt, elevators, floors) {
        // We normally don't need to do anything here
    }
}