class Player
{
  Particle p;
  float r, speed;
    
  Player (Particle ip, float ir, float is)
  {
    p = ip;
    p.makeFixed();
    r = ir;
    speed = is;
  }
  
  void move()
  {
    float moveAmt;
    if ( keyCode == UP ) 
    {
      moveAmt = min(y() - 5, speed);
      p.moveBy(0, -moveAmt, 0);
    }
    if ( keyCode == DOWN ) 
    {
      moveAmt = min(height - y() - 5, speed);
      p.moveBy(0, moveAmt, 0);
    }
    if ( keyCode == LEFT ) 
    {
      moveAmt = min(x() - 5, speed);
      p.moveBy(-moveAmt, 0, 0);
    }
    if ( keyCode == RIGHT ) 
    {
      moveAmt = min(width - x() - 5, speed);
      p.moveBy(moveAmt, 0, 0);
    }
  }
  
  void render()
  {
    stroke(200);
    fill(0, 0, 255);
    rect(x(), y(), r, r);
  }
  
  void speedUp()
  {
    speed = constrain(speed+1, 1, 10);
    println("Speed increased to " + speed + ".");
  }
  
  void slowDown()
  {
    speed = constrain(speed-1, 1, 10);
    println("Speed decreased to " + speed + ".");
  }
  
  float x()
  {
    return p.position().x();
  }
  
  float y()
  {
    return p.position().y();
  }
}