So I made a Disc and Disc Player in one of my maps. And since I couldn't find anything here (like an instance file or anyone bothering to make one) I decided to stick it up here.

Even though this is an instance, you should open this file to copy and paste everything into your map instead of loading this as an instance in your map. The reason being is that if you want to hide your disc (the disc that the player interacts with is near the two purple cube, DON'T TOUCH THE ONE INSIDE THE TRIGGER) you won't be able to hide it if it's part of an instance.
The default result of inserting the disc into the player is a message indicating that it works. Be sure to test it first to make sure it works before doing anything else with it. To change whatever result you want, change the logic_relay's Target output to whatever you want to be triggered.

Please let me know if you have trouble or need help since this is the first time I have uploaded an instance.

Edit: After some more testing, I realize that rotating the grouped objects (disk player, triggers, func_doors etc.) messes with the way the disk gets put in. So don't rotate the grouped objects either. I know that sounds like an inconvenience, but if your really insistent on rotating the device instead of rearranging the area you want the disk player to be located, then un-group the objects, change the "open" direction of the func_door. It's the purple "invisible" brush that touches the disc inside the trigger and goes into the disc player.
Please comment if you have any questions or need better instructions.

File Name: MLs Disc and Disk Player.zip
File Size: 4.61 KiB
Click here to download ML's Disc and Disc Player

This is just what I've been looking for! many thanks!

It was a pain to put together, especially when the step-by-step guide had a few mistakes in it. But the fact that people could use it without going through the hell I went through was worth it.

I wrote the step-by-step guide... What mistakes were there? It worked perfectly for me.

I used the Wiki guide after looking up a different guide online because the last time I checked the Wiki, the disc link was in red (no page). Your guide had only one mistake:

Quote:
To get everything interacting, we will use the I/O system. Remember that logic_auto we used? Open its Outputs tab and add the following properties:

  My Output >     Target Entity   Target Input    Parameter   Delay   Only Once
Io11.png  <span style="font-weight: bold">OnStartTouch</span>     hidden_disc     TurnOff         0.00    No

I don't recall logic_auto having a OnStartTouch output.
Your guide was much better than the one I used earlier. I didn't realize there was a page in the Wiki until I was almost half-way done (half-way with a few mistakes).