Game-generated audio

[icculus]

Obviously we can play the audio from the laserdisc content, but most games generate some additional sounds; usually just beeps and bloops in response to right/wrong input.

Just like we have a way for games to render on top of the laserdisc video, we need a way for them to mix audio samples into the output stream.

And then we need to actually have the Lua code specify when to beep and bloop.

[icculus]

(And this will get more complicated still with Thayer's Quest, which wants to do text-to-speech, but we'll cross that bridge later.)