Coches con Array

Car[] myCars;

int numCoches = 40;

void setup() {

  size(800, 600);

  myCars = new Car[numCoches]; 

  for (int i = 0; i < numCoches; i++) {

    color c = color(random(255), random(255), random(255));

    float xpos = random(width-5);

    float ypos = random(height-5);

    float xspeed = random(-6, 6);

      if (xspeed == 0){

        xspeed = 1;}

    myCars[i] = new Car(c, xpos, ypos, xspeed);

  }

}

void draw() {

  background(255);

  for (int i = 0; i < numCoches; i++) {

    myCars[i].drive();

    myCars[i].display();

  }

}

class Car {

  color c;

  float xpos;

  float ypos;

  float xspeed;

  Car(color tempC, float tempXpos, float tempYpos, float tempXspeed) {

    c = tempC;

    xpos = tempXpos;

    ypos = tempYpos;

    xspeed = tempXspeed;

  }

  void display() {

    stroke(0);

    fill(c);

    rectMode(CENTER);

    rect(xpos, ypos, 20, 10);

  }

  void drive() {

    xpos = xpos + xspeed;

    if (xpos > width && xspeed > 0) {

      xpos = 0;

    } else if (xpos < 0 && xspeed < 0) {

      xpos = width;

    }

  }

}