Hi.
I'm writing a game, and now is the time for discovering when armies bumps into each other.

So with a lot of Army objects (subclass of QGraphicsItems) moving around, I thought about doing like this (psudocodish)

Qt Code: 
  1. void Army::move()
  2. {
  3.      while ( movement path not empty)
  4.      {
  5.           setPos( next position in path);
  6.           list = collidingItems();
  7.           foreach (item,list)
  8.           {
  9.                if (item == enemy) do stuff etc.
  10.                else if .... 
  11.           }
  12.      }
  13. }
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Any other way of doing this that I haven't thought about?

I should add that there will always be atleast one item that I collide with, and that is the background map that is inserted as an QGraphicsPixmap, and that might slow things down? What do you think?
Is there any betterway of putting a pixmap as background in a scene?