/// <summary>
/// Sets up a new pattern to be played.
/// </summary>
private void SetUpPattern()
{
bool areAllLooping = true;
Sfx longest = null;
Sfx longestNoLoop = null;
int audioBufferIndex = _referenceSfx == null ? 0 : _referenceSfx.audioBufferIndex;
for (int i = 0; i < 4; i += 1)
{
if (patternData[_patternIndex].channels[i].isSilent)
{
sfxs[i] = null;
continue;
}
byte[] _sfxData = new byte[68];
Buffer.BlockCopy(_ram, util.ADDR_SFX + 68 * patternData[_patternIndex].channels[i].sfxIndex, _sfxData, 0, 68);
sfxs[i] = new Sfx(_sfxData, patternData[_patternIndex].channels[i].sfxIndex, ref _audioBuffer, ref _oscillator, _sampleRate, audioBufferIndex);
sfxs[i].Start();
if (!sfxs[i].HasLoop())
{
areAllLooping = false;
if (longestNoLoop == null || longestNoLoop.duration < sfxs[i].duration)
{
longestNoLoop = sfxs[i];
}
}
if (longest == null || longest.duration < sfxs[i].duration)
{
longest = sfxs[i];
}
}
_referenceSfx = areAllLooping ? longest : longestNoLoop;
// Remove loop from reference sfx, otherwise it'll keep looping forever.
_referenceSfx.endLoop = _referenceSfx.startLoop;
}
/// <summary>
/// Initializes audio unit.
/// </summary>
public void Init()
{
sfxChannels = new Sfx[channelCount];
musicChannels = new Sfx[channelCount];
musicPlayer = new MusicPlayer(ref _memory, ref audioBuffer, sampleRate);
}