Source Engine: func_button & func_rot_button outputs

[ertup0]

Maybe a context menu with an ability to send {press} input to a specific func button with a specific name

[magcius]

The main issue here is going to be supporting collision; we already have some support for brush but we don't have a raycaster. We could cheat by testing for buttons in close proximity and in the center of the screen, but I'm not sure if that would be a workable solution.

No support for context menus will be added, if anything, it will be a dedicated keyboard press to activate nearby buttons, perhaps R.