Basic class example javascript #2 Cars

var Car = function(engine = 5, weight = 100, fuel = 1 , speed = 0, carValue = 1000) {
    this.engine = engine;
    this.weight = weight;
    this.fuel = fuel;
    this.speed = speed;
    this.damage = 1;
    this.carValue = carValue;
};

Car.prototype.race = function() {
    this.speed = this.engine/this.weight * this.fuel;
    this.fuel -= 0.2;
}

Car.prototype.refuel = function() {
    this.fuel = 1;
}

Car.prototype.crash = function() {
    this.damage = Math.floor(Math.random() * (100 - 0 + 1)) + 0;
    this.carValue -= 100 * this.damage;
}

Car.prototype.sell = function() {
    this.value = 100;
}

var mercedes = new Car();
var honda = new Car();
var volvo = new Car(1, 1000, 0.5);


// Mercedes zaidejas nusipirko patobulinima
mercedes.weight = 70;


honda.race();  // 0,05 greitis
mercedes.race(); // 0,07 greitis

if(honda.speed > mercedes.speed) {
    console.log("honda laimejo");
    honda.race();
    volvo.race();
} else {
    console.log("mercedes laimejo");
    mercedes.race();
    volvo.race();
}

volvo.crash();


console.log(honda);