class Car {
  color colour;
  float x;
  float y;
  float v;
  float a;
  float angle;
  float maxspeed;
  
  Car(color colourTemp, float xPos, float yPos, float velocity, float acceleration, float angleTemp, float maxspeedTemp) {
    colour = colourTemp;
    x = xPos;
    y = yPos;
    v = velocity;
    a = acceleration;
    angle = angleTemp;
    maxspeed = maxspeedTemp;
  }
  
  void move(){
    x=x+v;
    if (x>width){
      x = 0;
    }
  }
  
  void display(){
    fill(colour);
    rect(x,y,50,20);
  }
}

float randomCols = random(60);
int cols = int(randomCols);
Car [] carsArray;

void setup(){
  size(400,400);
  noStroke();
  carsArray = new Car [cols];
  for (int x=0; x<cols; x++){
    carsArray[x] = new Car(color(random(255),random(255),random(255)),random(width),random(height),0,random(1),0,random(5));
  }
}

void draw(){
  background(0);
  for (int x=0; x<cols; x++){
    carsArray[x].v=carsArray[x].maxspeed*sin(carsArray[x].angle)+carsArray[x].maxspeed;
    carsArray[x].angle+=carsArray[x].a;
    carsArray[x].move();
    carsArray[x].display();
  }
}