just now I downloaded the placement editor, I found it was very difficult to use and I don't know how to use it correctly.

There is a help file in the IDE help folder that might help.

I am using Tier2. I found the coordinate of sprite is not right.
sometimes , the sprite x position should be 0, but the editor show -1024.

what's wrong ? I can't understand it.

hat's wrong ? I can't understand it.

I belive they are working on that?
Its because the cordinate system is not the same as ordinary 2d in open gl.
They will give you the option to use the old system like this and an new one with classic cordinates.

If i remember it right so did they have the center of screen as origin or something?

Thank you!