I am making a concept to use in a larger "beta" game by using observers. Now you see, I have made only two triggers that have nothing to do with the observers whatsoever.
Player 3, a computer, owns these observers. When I start the game, I happened to give myself science vessels so I could see the observers. What I found was odd an intriguing. When you have a mass of computer observers, they go into separate groups and cluster themselves! Also, the individual computer observers move a bit at the beginning of the game.
Why is this so??? Is this because of the built-in SC AI?
ADDITION:
New information: They do not cluster nor move at start of game when in neutral.
They always move by themselves sometimes...
It's just the way that the Starcraft AI is programed.
I know how individual air units for computer move a tiny bit at beginning, but I still don't understand the observers in mass.
They separate into groups and constantly are ordered to invisible locations, keeping them clustered the whole game. Are you sure SC AI is the only known explanation?

Funny you mention this, I made a map today testing something with bonelesskid, and I accidently made a trigger that made mass observers. However it was intriguing to see that once there was about 500 of them, they would center then form a weird pattern.
--------o
--o--o
o--O
--o--o
The dashes are uses cause forums will delete useless spaces, but that was the pattern they formed. lol It was kinda freaky. If anyone wants to see the map tell me.
Are you trying to say they form in a hexagonal pattern?
Oh an also, do "color=black" to make those lines nearly invisible.
------Like this, see?
Sounds very interesting. I've never seen this massing of the obs before, So Spiral, I would like to see that map for myself. Or a screenshot will do...
You can make the map on your own! Just get a human player (you), a computer protoss with a mass of observers (I used teal), get a science vessel, remove all triggers, start the game and amaze yourself!

wow i tried it and i got this it was wered they started forming clusters i gave the computer 112 ob
O----O----O
O----O----O
O=clusters of observers
---= spaes between
I've seen spell casters move by themselves to aid units owned by the same computer player even when no scripts are used.
Ya, AI's help each other out.
They were probably trying to detect something, thats why they moved around?
There's nothing to detect lol.
QUOTE
I've seen spell casters move by themselves to aid units owned by the same computer player even when no scripts are used.
Yeah I've seen shuttles in a beta rpg bring in reinforcements when I attacked a zergling.