這個類的三種初始化方法非常非常非常相似。我想看看是否有方法將調用鏈接在一起,可能會涉及需要兩個參數的方法。謝謝。C++:重複自己的方法; DRY優化需要
AudioHandler.h
class AudioHandler {
public:
static bool Initialize(const SoundLibrary& sl);
static bool Initialize(const Soundtrack& st);
static bool Initialize(const SoundLibrary& sl, const Soundtrack& st);
static void Release();
private:
static const SoundLibrary* _sl;
static const Soundtrack* _st;
};
AudioHandler.cpp
bool AudioHandler::Initialize(const SoundLibrary& sl) {
if(_sl != NULL || _st != NULL) return false;
unsigned long numVoices = 0;
//If allegro is unable to initialize the sound drivers then return false.
if((numVoices = detect_digi_driver(DIGI_AUTODETECT)) == 0) return false;
if(install_sound(DIGI_AUTODETECT, MIDI_NONE, NULL) == -1) return false;
_sl = &sl;
return true;
}
bool AudioHandler::Initialize(const Soundtrack& st) {
if(_sl != NULL || _st != NULL) return false;
if(detect_midi_driver(MIDI_AUTODETECT) == 0) return false;
if(install_sound(DIGI_NONE, MIDI_AUTODETECT, NULL) == -1) return false;
_st = &st;
return true;
}
bool AudioHandler::Initialize(const SoundLibrary& sl, const Soundtrack& st) {
if(_sl != NULL || _st != NULL) return false;
unsigned long numVoices = 0;
if((numVoices = detect_digi_driver(DIGI_AUTODETECT)) == 0) return false;
if(detect_midi_driver(MIDI_AUTODETECT) == 0) return false;
if(install_sound(DIGI_AUTODETECT, MIDI_AUTODETECT, NULL) == -1) return false;
_sl = &sl;
_st = &st;
return true;
}
void AudioHandler::Release() {
_sl = NULL;
_st = NULL;
remove_sound();
}
爲什麼這是一個類,而不是命名空間? – 2012-03-24 21:02:25
存儲一個常量引用的地址是非常危險的。你不知道該對象實際上是在函數調用之後生存的。 – 2012-03-24 21:04:18
@KerrekSB它將成爲一個命名空間的成就? – Casey 2012-03-24 22:51:55