/// <summary>
/// 定义一个静态的公开的GetInstance方法供外部得到DH类唯一实例是调用
/// </summary>
/// <returns></returns>
public static DH GetInstance()
{
//先判断dh是否已经被实例化，若未被实例化，先加锁保证线程安全
if (dh == null)
{
lock (lockObject)
{
//先判断dh是否已经被实例化，若未被实例化，先实例化得到DH类的实例
//保证DH类只被实例化一次
if (dh == null)
{
dh = new DH();
}
}
}
return(dh);
}
/// <summary>
/// 创建英雄的静态方法
/// </summary>
/// <param name="heroName">英雄名称</param>
/// <returns></returns>
public static IHero CreateHero(string heroName)
{
switch (heroName)
{
case "DH":
return(DH.GetInstance()); //通过DH类公开的静态GetInstance方法得到DH类的实例
case "WD":
return(new WD());
case "KOG":
return(new KOG());
case "POM":
return(new POM());
default:
return(null);
}
}