lab_2

//kravets
public class Main
{
    public static void main(String[] args)
    {
        Car car = new Car("BMW");
        car.upgrade_car(2000);
        car.get_properties();
        System.out.println(car.time_to_go(100, 200));

        Express express = new Express("Lastochka");
        express.buy_lunch(-2);
    }
}

class Vehicle
{
    public String name;
    public float max_speed;

    Vehicle(String name)
    {
        this.name = name;
    }

    public float weight;
    public float cost;
    public int quantity_of_seats;

    public void get_properties()
    {
        System.out.println("name: " + this.name + "\nmaximum speed: " + this.max_speed + "\nweight: " + this.weight + "\ncost: " +
                this.cost + "\nplaces to seat: " + this.quantity_of_seats);
    }

    public double time_to_go(float way, int speed)
    {
        if (speed <= 0)
            return 0;
        if (speed > max_speed)
        {
            System.out.println("Your vehicle was broken!!!");
            return 0;
        }
        else
            return (way / speed);
    }
}

class Car extends Vehicle
{
    Car(String name)
    {
        super(name);
        this.name = name;
        super.max_speed = 150;
        super.quantity_of_seats = 4;
        super.weight = 1000;
        super.cost = 10000;
    }
    public void upgrade_car(float money)
    {
        if (money <= 0)
            System.out.println("You can`t buy anything for $ " + money);
        else
        {
            System.out.println("The car`s was engine upgraded, now it has higher maximum speed!");
            super.max_speed += money / 100;
        }
    }

    public void replace_wheel(int number)
    {
        if (number > 4)
            System.out.println("You can`t replace more wheels than your car has!!!");
        else if (number<=0)
            System.out.println("You wanna replace " + number + " wheels? Are you seriously?");
        else
            System.out.println("Successfully replaced " + number + " wheels.");
    }
}

class Train extends Vehicle
{
    public int number_of_trains;
    public int seats_in_1_train = 40;
    public int weight_of_1_train = 24000;
    public float ticket_price;
    Train(String name)
    {
        super(name);
        this.name = name;
        this.number_of_trains = 7;
        super.max_speed = 115;
        super.quantity_of_seats = seats_in_1_train * number_of_trains;
        super.weight = 25000 + weight_of_1_train * number_of_trains;
        super.cost = 2000000 + 700000 * number_of_trains;
        this.ticket_price = 20;
    }
    public void buy_tickets(int quantity)
    {
        if (quantity <= 0)
            System.out.println("You must set positive number of tickets!!!");
        else
        {
            System.out.println("You bought " + quantity + " ticket(s). And you spent $ " + (quantity * this.ticket_price));
        }
    }

    @Override
    public void get_properties() {
        System.out.println("name: " + this.name + "\nmaximum speed: " + this.max_speed + "\nweight: " + this.weight + "\ncost: " +
                this.cost + "\nplaces to seat: " + this.quantity_of_seats + "\nprice of ticket: $ " + this.ticket_price);
    }
}

class Express extends Train //shvudkiy poizd
{
    public static int price_of_lunch = 15;
    Express(String name)
    {
        super(name);
        this.name = name;
        this.number_of_trains = 5;
        super.seats_in_1_train = 35;
        super.weight_of_1_train = 19000;
        super.max_speed = 210;
        super.quantity_of_seats = seats_in_1_train * number_of_trains;
        super.weight = 22000 + weight_of_1_train * number_of_trains;
        super.cost = 3000000 + 900000 * number_of_trains;
        this.ticket_price = 50;
    }
    public void buy_lunch(int quantity)
    {
        if (quantity > 0)
            System.out.println("You bought " + quantity + " lunches (sandwich + cola)\nTotal price: $ " +
                    (quantity * price_of_lunch));
        else
            System.out.println("You wanna buy " + quantity + " lunches? Seriously!?");
    }
}