EPTDo you have experience with similar stuff in melee maps?
Bridge is still alive:
![[image loading]](http://i.imgur.com/TgEFb4H.jpg)
The path is open and those bricks prevent building placement. Both bricks are conjured and collapse at the same time.
When killed:
![[image loading]](http://i.imgur.com/x8IikoD.jpg)
The path is now blocked forever and units, who were unfortunate to stand in between the bricks die, others just get pushed back a little. Notice that the minimap now shows "rocks" and remind you of the blocked path.
Basically what I did was to give unbuildable bricks the Rock Tower behavior, but creating only the placeholder rocks right on top of them. These placeholder rocks are invisible, they are only used to create the pushing effect (usually with rock towers they morph to regular rocks just when the animation ends). Didn't find a bug so far, but just started testing.
I will upload the map later tonight if you want to help testing.
