rcatlin/Emergency-Response — pull request #23 by chridd (2013-02-05 00:21:39+00:00)
Title: Feature/barriers

A simple system for having objects block the way. If there's a prop on the wall with the property barrier: true, then you can't go that way. Such props can be added or removed with addToScene/removeFromScene triggers. If you don't want a visible prop (e.g., locked door) then you can use an completely-transparent image.