//写构造函数
public PlayerZD(TankFather tf, int speed, int life, int power) : base(tf, speed, life, power, img)
{
}
/// <summary>
/// 4.构造函数
/// </summary>
/// <param name="tf"></param>
/// <param name="?"></param>
public ZiDanFather(TankFather tf, int speed, int life, int power, Image img) : base(tf.X + tf.Width / 2 - 6, tf.Y + tf.Height / 2 - 6, img.Width, img.Height, speed, life, tf.Dir)
{
this.img = img;
}
