Function ChangeSoundSet

src/sound.cpp:167–191

* Change the configured sound set and reset sounds. * @param index Index of sound set to switch to. */

 * @param index Index of sound set to switch to.
 */
void ChangeSoundSet(int index)
{
	if (BaseSounds::GetIndexOfUsedSet() == index) return;

	auto set = BaseSounds::GetSet(index);
	BaseSounds::ini_set = set->name;
	BaseSounds::SetSet(set);

	MxCloseAllChannels();
	InitializeSound();

	/* Replace baseset sounds in the pool with the updated original sounds. This is safe to do as
	 * any sound still playing holds its own shared_ptr to the sample data. */
	for (uint i = 0; i < ORIGINAL_SAMPLE_COUNT; i++) {
		SoundEntry *sound = GetSound(i);
		/* GRF Container 0 means the sound comes from the baseset, and isn't overridden by NewGRF. */
		if (sound == nullptr || sound->grf_container_ver != 0) continue;

		*sound = _original_sounds[_sound_idx[i]];
		sound->volume = _sound_base_vol[i];
		sound->priority = 0;
	}

	InvalidateWindowData(WC_GAME_OPTIONS, WN_GAME_OPTIONS_GAME_OPTIONS, 0, true);
}

/**
 * Decide 'where' (between left and right speaker) to play the sound effect.