Random Generated Flight Schedules

flights.js

// Written by Petter Kraabøl

function Airport (city, name, capacity, x, y){
    this.city       = city;             // City name
    this.name       = name;             // Airport Name
    this.capacity   = capacity;         // Plane capacity
    this.x          = x;                // x coordinate
    this.y          = y;                // y coordinate
}

function Plane (name, capacity, airport, flight){
    this.name       = name;             // Plane name
    this.capacity   = capacity;         // Seats
    this.airport    = airport;          // Current airport, destination if in flight
    this.flight     = flight;           // Flight route if any (object/false)
}

function Flight (plane, origin, destination, departure, arrival){
    this.plane      = plane;            // Plane
    this.origin     = origin;           // Origin Airport
    this.destination= destination;      // destination Airport
    this.departure  = departure;        // Date time (dd/mm/yyyy hh:mm:ss)
    this.arrival    = arrival;          // Date time (dd/mm/yyyy hh:mm:ss)
}


// Example Data
var airport     = [];
//                              City            Name                                Capacity    X       Y
    airport[0]  = new Airport('lineware',       'Modern Flannel Airport',           10,         886,    165);
    airport[1]  = new Airport('Subtrax',        'Pointless Waterbird Airport',      10,         859,    471);
    airport[2]  = new Airport('Cityhigh',       'Grim Leather Airport',             10,         196,    584);
    airport[3]  = new Airport('danbam',         'Pottery Stormy Airport',           10,         505,    826);
    airport[4]  = new Airport('E-ice',          'Wrench Aberrant Airport',          10,         145,    677);
    airport[5]  = new Airport('Andexon',        'Swift Dusty Fox Airport',          10,         524,    86);
    airport[6]  = new Airport('Opendom',        'Elastic Maximum Cloud Airport',    10,         887,    293);
    airport[7]  = new Airport('O-soloware',     'Grim Blue Notorious Airport',      10,         332,    245);
 
var plane       = [];
//                              Name                        Capacity    Airport         Active
    plane[0]    =   new Plane('Fixsolzim Airways',          20,         airport[0],     false);
    plane[1]    =   new Plane('Waretraxbam Airways',        20,         airport[1],     false);
    plane[2]    =   new Plane('Joyholding Airways',         20,         airport[2],     false);
    plane[3]    =   new Plane('Plusron Airways',            20,         airport[3],     false);
    plane[4]    =   new Plane('Bamzim Airways',             20,         airport[4],     false);
    plane[5]    =   new Plane('Dongvivahex Airways',        20,         airport[5],     false);
    plane[6]    =   new Plane('Plustom Airways',            20,         airport[6],     false);
    plane[7]    =   new Plane('Goldenfind Airways',         20,         airport[7],     false);
    plane[8]    =   new Plane('Matdubplus Airways',         20,         airport[0],     false);
    plane[9]    =   new Plane('Vilacom Airways',            20,         airport[1],     false);
    plane[10]   =   new Plane('Indigotechno Airways',       20,         airport[2],     false);
    plane[11]   =   new Plane('Sonelectrics Airways',       20,         airport[3],     false);
    plane[12]   =   new Plane('Duo-fax Airways',            20,         airport[4],     false);
    plane[13]   =   new Plane('Lahouse Airways',            20,         airport[5],     false);
    plane[14]   =   new Plane('Sailcone Airways',           20,         airport[6],     false);
    plane[15]   =   new Plane('Finvivadex Airways',         20,         airport[7],     false);

var flight      = [];

// Generate Flights
for(var i = 0; i < plane.length; i++){
    var date = new Date();
    var end  = dateAdd(date, 'year', 1);

    while(date <= end){
        var departure   = generateDelay(date);
        var destination = findDestination(plane[i].airport);
        var arrival     = calculateArrival(departure, plane[i].airport, destination);

        var newFlight = new Flight(plane[i], plane[i].airport, destination, departure, arrival);
        flight.push(newFlight);

        // Set new values
        plane[i].airport    = destination;
        date                = arrival;
    }
}

console.log(JSON.stringify(flight));

function generateDelay(date){
    var minutes     = 0;
    var delay       = date;
    var rng         = Math.random()*100;

    // Strike                   1-21 days at 00:00:00
    if(rng < 0.005)
        delay = new Date(delay.getFullYear(), delay.getMonth(), delay.getDate() + Math.floor(Math.random() * 21 + 1));

    // No more flights today    Starts the next day at 00:00:00
    if(rng < 0.5)
        delay = new Date(delay.getFullYear(), delay.getMonth(), delay.getDate()+1);

    // Delayed for random minutes + constant
    minutes = Math.floor(Math.random() * 512 + 1) + 60;
    delay = dateAdd(delay, 'minute', minutes);

    // Set seconds to 00
    delay = new Date(delay.getFullYear(), delay.getMonth(), delay.getDate(), delay.getHours(), delay.getMinutes());

    return delay;
}

function findDestination(origin){
    while(true){
        var rng = Math.floor(Math.random() * airport.length);

        if(airport[rng] !== origin.name)
            return airport[rng];
    }
}

function calculateArrival(date, origin, destination){
    var distance    = calculateDistance(origin, destination);
    var travelTime  = distance*2 + Math.floor(Math.random() * 30 + 1);

    return dateAdd(date, 'minute', travelTime);
}

function calculateDistance(a, b){
    return Math.sqrt(Math.pow(a.x - b.x, 2) + Math.pow(a.y - b.y, 2));
}

function dateAdd(date, interval, units) {
  var ret = new Date(date);
  switch(interval.toLowerCase()) {
    case 'year'   :  ret.setFullYear(ret.getFullYear() + units);          break;
    case 'quarter':  ret.setMonth(ret.getMonth()       + 3*units);        break;
    case 'month'  :  ret.setMonth(ret.getMonth()       + units);          break;
    case 'week'   :  ret.setDate(ret.getDate()         + 7*units);        break;
    case 'day'    :  ret.setDate(ret.getDate()         + units);          break;
    case 'hour'   :  ret.setTime(ret.getTime()         + units*3600000);  break;
    case 'minute' :  ret.setTime(ret.getTime()         + units*60000);    break;
    case 'second' :  ret.setTime(ret.getTime()         + units*1000);     break;
    default       :  ret = undefined;  break;
  }
  return ret;
}