/// <summary>
/// 初始化子弹基类
/// </summary>
/// <param name="tank"></param>
/// <param name="img"></param>
public BulletFather(TankFather tank, Image img, int speed)
: base(tank.X, tank.Y, img, img.Width, img.Height)
{
SetBullteXY(tank, img);
this.Dir = tank.Dir;
this.Speed = speed;
this.Grade = 1;
}
/// <summary>
/// 根据坦克位坐标，图片大小调整子弹坐标
/// </summary>
/// <param name="tank"></param>
/// <param name="img"></param>
private void SetBullteXY(TankFather tank, Image img)
{
switch (tank.Dir)
{
case Enums.Direction.Up:
this.X += (int)(Math.Abs(tank.Width - img.Width) / 2);
break;
case Enums.Direction.Down:
this.X += (int)(Math.Abs(tank.Width - img.Width) / 2);
this.Y += tank.Img.Height;
break;
case Enums.Direction.Left:
this.X -= img.Width;
this.Y += (int)(Math.Abs(tank.Height - img.Height) / 2);
break;
case Enums.Direction.Right:
this.X += tank.Img.Width;
this.Y += (int)(Math.Abs(tank.Height - img.Height) / 2);
break;
}
}