running other programs on achievement trigger.

[Hoover889]

Would it be possible to implement a way to trigger some other program/function whenever an achievement is earned?

I built an arcade cabinet with WS2812 LEDs and it would be cool to make them run an animation whenever an achievement triggers

[Jamiras]

That would be a function for the client. rcheevos provides an event when an achievement triggers (see wiki). The client uses that event to pop up the notification. Each client is responsible for managing the event however they feel is appropriate.

There's a couple of twitch integrations that watch for unlocks, but I think they just periodically poll the API to see if anything new is unlocked. I considered adding a named pipe event to the DLL to make it simpler, but most twitch streamers use RetroArch.

Most likely, you're using RetroArch in your arcade cabinet. You could enable logging and watch for unlock messages in the log. Or if you're feeling ambitious, you could just modify the code somewhere in here to do whatever you need yourself.

[meleu]

This reminded me of a conversation I had about 5 years ago about this very thing (blinking LEDs on an arcade cabinet when an achievement is unlocked).

https://retropie.org.uk/forum/post/95321

Never heard about anyone who actually did that though.