由 dawei
<p style="text-align: left" align="left"><span style="font-size: 10pt; font-family: Consolas"> <span style="font-size: 10pt; color: blue; font-family: Consolas">public<span style="font-size: 10pt; color: blue; font-family: Consolas">override<span style="font-size: 10pt; color: #2b91af; font-family: Consolas">Enemy<span style="font-size: 10pt; font-family: Consolas"> Clone(<span style="font-size: 10pt; color: blue; font-family: Consolas">bool<span style="font-size: 10pt; font-family: Consolas"> isDeepCopy)
<p style="text-align: left" align="left"><span style="font-size: 10pt; font-family: Consolas"> {
<p style="text-align: left" align="left"><span style="font-size: 10pt; font-family: Consolas"> <span style="font-size: 10pt; color: #2b91af; font-family: Consolas">FootMan<span style="font-size: 10pt; font-family: Consolas"> footman;
<p style="text-align: left" align="left"><span style="font-size: 10pt; font-family: Consolas"> <span style="font-size: 10pt; color: blue; font-family: Consolas">if<span style="font-size: 10pt; font-family: Consolas"> (isDeepCopy)
<p style="text-align: left" align="left"><span style="font-size: 10pt; font-family: Consolas"> {
<p style="text-align: left" align="left"><span style="font-size: 10pt; font-family: Consolas"> <span style="font-size: 10pt; color: #2b91af; font-family: Consolas">MemoryStream<span style="font-size: 10pt; font-family: Consolas"> memoryStream = <span style="font-size: 10pt; color: blue; font-family: Consolas">new<span style="font-size: 10pt; color: #2b91af; font-family: Consolas">MemoryStream<span style="font-size: 10pt; font-family: Consolas">();
<p style="text-align: left" align="left"><span style="font-size: 10pt; font-family: Consolas"> <span style="font-size: 10pt; color: #2b91af; font-family: Consolas">BinaryFormatter<span style="font-size: 10pt; font-family: Consolas"> formatter = <span style="font-size: 10pt; color: blue; font-family: Consolas">new<span style="font-size: 10pt; color: #2b91af; font-family: Consolas">BinaryFormatter<span style="font-size: 10pt; font-family: Consolas">();
<p style="text-align: left" align="left"><span style="font-size: 10pt; font-family: Consolas"> formatter.Serialize(memoryStream,<span style="font-size: 10pt; color: blue; font-family: Consolas">this<span style="font-size: 10pt; font-family: Consolas">);
<p style="text-align: left" align="left"><span style="font-size: 10pt; font-family: Consolas"> memoryStream.Position = 0;
<p style="text-align: left" align="left"><span style="font-size: 10pt; font-family: Consolas"> footman = (<span style="font-size: 10pt; color: #2b91af; font-family: Consolas">FootMan<span style="font-size: 10pt; font-family: Consolas">)formatter.Deserialize(memoryStream);
<p style="text-align: left" align="left"><span style="font-size: 10pt; font-family: Consolas"> }
<p style="text-align: left" align="left"><span style="font-size: 10pt; font-family: Consolas"> <span style="font-size: 10pt; color: blue; font-family: Consolas">else
<p style="text-align: left" align="left"><span style="font-size: 10pt; font-family: Consolas"> footman = (<span style="font-size: 10pt; color: #2b91af; font-family: Consolas">FootMan<span style="font-size: 10pt; font-family: Consolas">)<span style="font-size: 10pt; color: blue; font-family: Consolas">this<span style="font-size: 10pt; font-family: Consolas">.MemberwiseClone();
<p style="text-align: left" align="left"><span style="font-size: 10pt; font-family: Consolas"> <span style="font-size: 10pt; color: blue; font-family: Consolas">return<span style="font-size: 10pt; font-family: Consolas"> footman;
<p style="text-align: left" align="left"><span style="font-size: 10pt; font-family: Consolas"> }
说明：<span lang="EN-US" style="font-family: 微软雅黑; mso-bidi-font-size: 10.5pt">Clone()<span style="font-family: 微软雅黑; mso-bidi-font-size: 10.5pt">方法接受一个参数，表示是否是深拷贝。在这里，我们通过序列化反序列化实现深拷贝，深拷贝实现对象的完整复制，包括对象内部的引用类型都会复制一份全新的。在这里，如果<span lang="EN-US">3个敌人对象的<span lang="EN-US">Location都指向内存同一个地址的话，那么它们就分不开了，因此，在复制的时候需要进行深拷贝，使得它们的<span lang="EN-US">Location是独立的。由于进行了深拷贝，修改了一个敌人的位置并不会影响其它敌人。
<span lang="EN-US" style="font-family: 微软雅黑; mso-bidi-font-size: 10.5pt">.NET<span style="font-family: 微软雅黑; mso-bidi-font-size: 10.5pt">中使用<span lang="EN-US">Object的<span lang="EN-US">MemberwiseClone()方法来实现浅拷贝，通过序列化和反序列化实现深拷贝，后者代价比较大，选择何时的拷贝方式。<span lang="EN-US">