What does the ghost ability do?

I jsut wanted to know what exactly does the ghost ability do? I know there is a visible and invisible versions but I have no idea what the ability actually does

It manipulates the pathing of a unit, i.e making in able to be built on, pathless against other units, or some other stuff. Best used on units in TD's for the pathlessness, or units that "fly" but don't, but are meant to be pathless.

So it makes ur collision size 0?

Uh... somewhat yes... but it makes the collision size well... pretty much not exist...

It makes a unit ignore other units when it comes to where it can go. eg: a peasant cannot walk thogh a farm. A unit with the ghost ability can.

Atleast, if im remembering correctly. (and im pretty sure i am)

Earth that is an example of how it works... though I think it can't walk through buildings BUT it can be built on.

Iirc, ghost makes other units able to walk through the unit (ie. no longer treated as an obstacle), using the SetUnitPathing action and making it false allows the unit to walk through other stuff, but still be treated as an obstacle (although it will still try to follow its normal pathing usually/until it gets to an 'illegal' pathing cell).

I think.

Yeah, ghost makes other units able to path through the unit with ghost.
But the unit with ghost will still maintain his own pathing and won't be able to walk through other stuff.

Mixing it with SetUnitPathing() allows the unit to path through everything (But will unfortunately walk through trees and shit too).
I was experimenting a lot with this stuff trying to recreate the WW pathing.
(Which mind you, is impossible with triggers)

SetUnitPathing(u,false) - makes unit pathable everywhere (you don't need extra crap) ! so the ghost ability how i know makes unit invinsible (thats the most interesting attribute as for me...)

Haha, yeah. Funny fact: WW pathability allows items (!!!) to block you. So if there is a circle of items around the Blademaster and it WW's, it won't be able to move out of the circle.

I found that out in a test map, it was quiet damn funny. You could walk through an entire army, but get blocked by items.

Makes the unit that has the ability invisible. If i'm right, Aquisition will fall to zero and he'll be like...a ghost...
Lol ya ackward when you do that.

Hey i'd like to know if it's posible to make a ghost ability unit attack.