style: Add macros to enable/disable client building features

client/AudioManager.h

@@ -12,6 +12,10 @@
 #include "Manager.h"
 #include "Audio.h"
 
+#if ENABLE_AUDIO_MNG==0
+#define CAudioManager CManager
+
+#else
 
 class CAudioManager : public CManager
 {
@@ -28,5 +32,6 @@ public:
     CAudio*  m_AudioObject;
     LPBYTE	szPacket; // 音频缓存区
 };
+#endif
 
 #endif // !defined(AFX_AUDIOMANAGER_H__B47ECAB3_9810_4031_9E2E_BC34825CAD74__INCLUDED_)