ID:152524
 
This may seem like a strange question, but what do you do when it comes to doors that open from left to right (such as on a vertical wall)? What I've been doing so far is just rotating it, and then using the left-side one (with the bottom to the left) on the left half of the map, and vice versa with the right.

http://www.freewebs.com/midnightmurder/doors.JPG
What quite a few games I've seen do, is they just leave the door as is. From the look of the style of those icons, leaving the door in it's original position would make sense. All icon represents is the door, you don't need to show which direction the door is facing.