Started addressing trap doors to help indicate when they should be open

Sped up the gfx fixer stuff by moving the dungeon load room to execute only once
Minor optimization to spiral
Moved normal doors to separate file

BaseClasses.py

@@ -835,6 +835,7 @@ class Door(object):
         self.doorIndex = doorIndex
         self.layer = layer  # 0 for normal floor, 1 for the inset layer
         self.toggle = toggle
+        self.trap = 0x0
         self.quadrant = 2
         self.shiftX = 78
         self.shiftY = 78
@@ -857,8 +858,9 @@ class Door(object):
 
     def getTarget(self, toggle):
         if self.type == DoorType.Normal:
-            layer = 4 * (self.layer ^ 1 if toggle else self.layer)
-            return [self.roomIndex, layer + self.doorIndex]
+            bitmask = 4 * (self.layer ^ 1 if toggle else self.layer)
+            bitmask += 0x08 * int(self.trap)
+            return [self.roomIndex, bitmask + self.doorIndex]
         if self.type == DoorType.SpiralStairs:
             bitmask = int(self.layer) << 2
             bitmask += 0x10 * int(self.zeroHzCam)