SFML无声音播放存储在ResourceHolder中的声音缓冲区

#include <SFML/Audio.hpp>
#include <iostream>
#include <unordered_map>

class ResourceHolder {
public:
    static ResourceHolder& getInstance() {
        static ResourceHolder instance;
        return instance;
    }

    sf::SoundBuffer& getSoundBuffer(const std::string& filename) {
        if (soundBuffers.count(filename) == 0) {
            if (!soundBuffers[filename].loadFromFile(filename)) {
                std::cerr << "Failed to load sound: " << filename << std::endl;
            }
        }
        return soundBuffers[filename];
    }

private:
    std::unordered_map<std::string, sf::SoundBuffer> soundBuffers;

    ResourceHolder() {}
    ResourceHolder(const ResourceHolder&) = delete;
    ResourceHolder& operator=(const ResourceHolder&) = delete;
};

int main() {
    sf::Sound sound;
    sound.setBuffer(ResourceHolder::getInstance().getSoundBuffer("sound.wav"));
    sound.play();

    // 程序继续执行...

    return 0;
}