yea well... everything is mentioned in title^^
Is it possible to detect powerups ein carried around by workers?

At my actual map i use a revive system with powerups - unfortunaly two players are able to pick up those powerups (Khaydarin Crystal). In that case i made triggers to detect whether a player brings a crystal to a certain location and i encountered the issue that if the powerup is picked up its not any longer in that location (even if the worker stays at the same position where he did pick it up). Long story but thats not the point -
I was asking myself if its possible to detect a carried powerup?

Is the powerup just given to the player who picked it up?

When a unit picks up a powerup, the powerup actually stays in the same location, but is just made invisible and undetectable. The unit gets an image overlay to represent what it's carrying, but the powerup doesn't actually move. I don't think you would be able to detect it without EUDs.

Source: spent a while trying to detect carried powerups for a mod and found it incredibly annoying to do so, even with GPTP.

Thanks for you fast reply.
But its really sad to read that - it would give UMS-maker a great feature to make missions

Wait that cant be right. Detecting powerups are how shuttle menu systems work.

You're right Oh_Man, I'm sorry. I was conflating powerups and resource chunks.

Yeah so you can pull off what you're trying to do, you just need to choose from these powerups only:

Mineral Chunk 1/2
Vespene Box 1/2
Vespene Sac 1/2
Vespene Barrel 1/2

Another interesting thing about these, which you may or may not find useful, is that they have hp. They can be targeted and killed. The other powerups are invulnerable. You can set them to invincibile if you don't want this, however.

What? No...

http://www.staredit.net/wiki/index.php?title=Quirks_and_nuances

Powerups are an integral part of the SC1 campaign. If player 1 brings player 12's powerup, it will detect as player 1's powerup however, and if you kill the worker, it will return to player 12 (flags are an exception). Note that "At most" doesn't work on held powerups.

Essentially yes.

There's a whole section on Powerup Quirks on the wiki page rockz linked to. I wrote it all, after extensive testing for a Blood Pressure Marathon map I was making (but eventually abandoned because I used waits to create it, it was before I knew about hyper-triggers, and converting it to a wait-lock free system was far too much hassle).

rockz has it right.

That's something I used in some of my maps.