Interacting with the Engine

The rendering loop#

Amplitude has been built in a way it will adapt to your game framerate. For that, any update to the internal state is done in a rendering loop (which may be your main game loop), where you provide to the engine the time elapsed since the last update.

A typical rendering loop may look as this:

// A rendering loop running at 60 FPS
while (true)
{
  if (!mIsRunning)
    break;

  // ... Update Amplitude state ...

  AmTime fps = 1.0 / 60.0;
  amEngine->AdvanceFrame(fps); // Apply the engine state updates
  Thread::Sleep(static_cast<AmInt32>(fps * kAmSecond));
}

This will help Amplitude to correctly process various timed updates like fading transitions and RTPC curves.

Handles#

When it’s time to interact with audio, you need to have an instance of each sound objects you want to play