sound.cpp

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#include "./asw/modules/sound.h"
 
#include <algorithm>
 
#include <SDL3_mixer/SDL_mixer.h>
 
namespace {
float master_volume = 1.0F;
float sfx_volume = 1.0F;
float music_volume = 1.0F;
 
int compute_sfx_volume(float vol)
{
    auto volume = vol * 255.0F * sfx_volume * master_volume;
    return static_cast<int>(volume);
}
 
int compute_music_volume(float vol)
{
    auto volume = vol * 255.0F * music_volume * master_volume;
    return static_cast<int>(volume);
}
} // namespace
 
void asw::sound::play(const asw::Sample& sample, float volume, float pan, bool loop)
{
    const int channel = Mix_PlayChannel(-1, sample.get(), loop ? -1 : 0);
    if (channel >= 0) {
        Mix_Volume(channel, compute_sfx_volume(volume));
 
        auto panning = (std::clamp(pan, -1.0F, 1.0F) + 1.0F) * 127.5F;
        auto int_pan = static_cast<unsigned char>(panning);
 
        Mix_SetPanning(channel, 255 - int_pan, int_pan);
    }
}
 
void asw::sound::play_music(const asw::Music& sample, float volume)
{
    Mix_VolumeMusic(compute_music_volume(volume));
    Mix_PlayMusic(sample.get(), -1);
}
 
void asw::sound::stop_music()
{
    Mix_HaltMusic();
}
 
void asw::sound::fade_in_music(const asw::Music& music, float volume, float duration)
{
    Mix_FadeInMusic(music.get(), -1, static_cast<int>(duration * 1000.0F));
    Mix_VolumeMusic(compute_music_volume(volume));
}
 
void asw::sound::fade_out_music(float duration)
{
    Mix_FadeOutMusic(static_cast<int>(duration * 1000.0F));
}
 
void asw::sound::pause_music()
{
    Mix_PauseMusic();
}
 
void asw::sound::resume_music()
{
    Mix_ResumeMusic();
}
 
bool asw::sound::is_music_playing()
{
    return Mix_PlayingMusic();
}
 
bool asw::sound::is_music_paused()
{
    return Mix_PausedMusic();
}
 
void asw::sound::set_master_volume(float volume)
{
    master_volume = std::clamp(volume, 0.0F, 1.0F);
}
 
void asw::sound::set_sfx_volume(float volume)
{
    sfx_volume = std::clamp(volume, 0.0F, 1.0F);
}
 
void asw::sound::set_music_volume(float volume)
{
    music_volume = std::clamp(volume, 0.0F, 1.0F);
}
 
float asw::sound::get_master_volume()
{
    return master_volume;
}
 
float asw::sound::get_sfx_volume()
{
    return sfx_volume;
}
 
float asw::sound::get_music_volume()
{
    return music_volume;
}