Okay, i've tried the wiki and all I found was Crystal Cannons. I've seen in maps you can make invisible cannons, but i'm not sure how. I know it's Disable Doodad State, but that just makes the cannon unclickable. Help?
None.
After that you have to detect it (for the players) and then remove the detection.
None.

We can't explain the universe, just describe it; and we don't know whether our theories are true, we just know they're not wrong. >Harald Lesch
Hi guys, another problem here. I've recently got how you make some Photon Cannons invisible, by disabling doodad state. Now , i need to know how to make them attack, since their doodad state is disabled. A pylon wont work, what will?!! (BTW solution can be for computer or human)
Wait 100ms and then enable the cannon again. It will stay cloaked, but it can now shoot.