Tracker player update order

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Persune edited this page Jan 23, 2023 · 4 revisions

Documents the player update order of the tracker.

CSoundGen::PlayChannelNotes()
- CSoundGen::PlayNote()
  - CSoundGen::EvaluateGlobalEffects()
  - CChannelHandler::HandleDelay()
  - CChannelHandler::HandleNoteData()
    - (handle echo buffer)
      - CChannelHandler::WriteEchoBuffer()
    - (handle effects)
      - CChannelHandler::HandleEffect()
    - (handle volume command and Nxy)
    - (handle instrument command)
    - (switch case note command)
      - (handle empty note)
      - (handle note cut)
      - (handle note release)
      - (handle note)
    - (handle note slide)
CSoundGen::UpdatePlayer()
CSoundGen::UpdateChannels() // run instruments, effects, etc.
- CChannelHandler::ProcessChannel()
  - UpdateDelay();
  - UpdateNoteCut();
  - UpdateNoteRelease();
  - UpdateNoteVolume(); // // //
  - UpdateTranspose(); // // //
  - if (m_iVolSlideTarget < 0) // // !!
    - UpdateVolumeSlide();
  - else
    - UpdateTargetVolumeSlide();
  - UpdateVibratoTremolo();
  - UpdateEffects();
  - if (m_pInstHandler) m_pInstHandler->UpdateInstrument(); // // //
CSoundGen::UpdateAPU() // write to registers