diff --git a/Builder/src/fmon/builder/TilesetBuilder.scala b/Builder/src/fmon/builder/TilesetBuilder.scala
index f0bb6ac..015db25 100644
--- a/Builder/src/fmon/builder/TilesetBuilder.scala
+++ b/Builder/src/fmon/builder/TilesetBuilder.scala
@@ -83,7 +83,7 @@ class TilesetBuilder extends Savable {
   var bPalette = IndexedSeq[AutoTile]()
   var cPalette = IndexedSeq[AutoTile]()
   
-  val resourceDir = new File(raw"C:\Users\James\Documents\Design\Project\Progena\Resources\tilesets")
+  val resourceDir = new File(Config.homedir + raw"Progena\Resources\tilesets")
   val files = resourceDir.listFiles()
   val filenames = files.map(f => (f.getName(), f)).toMap
   
@@ -149,7 +149,7 @@ class TilesetBuilder extends Savable {
     if (a1Palette.size != currTileset.a1Size()) {
       currTileset.tileInfo.removeRange(0, currTileset.a1Size())
       currTileset.a1Size() = a1Palette.size
-      val info = a1Palette.map(_ => allPassInfo)
+      val info = a1Palette.map(_ => noPassInfo)
       currTileset.tileInfo.insert(0, info : _*)
     }
     updateTileView()
@@ -159,7 +159,7 @@ class TilesetBuilder extends Savable {
     currTileset.a2.value = getSelected(a2Chooser)
     a2Palette = if (getSelected(a2Chooser) == null) IndexedSeq() else AutoTilePalette.a2(getSelected(a2Chooser), Config.tileSize).tiles
     if (a2Palette.size != currTileset.a2Size()) {
-      val priorSize = currTileset.a2Size()
+      val priorSize = currTileset.a1Size()
       currTileset.tileInfo.removeRange(priorSize, priorSize + currTileset.a2Size())
       currTileset.a2Size() = a1Palette.size
       val info = a2Palette.map(_ => allPassInfo)
@@ -175,7 +175,7 @@ class TilesetBuilder extends Savable {
       val priorSize = currTileset.a1Size() + currTileset.a2Size()
       currTileset.tileInfo.removeRange(priorSize, priorSize + currTileset.a3Size())
       currTileset.a3Size() = a1Palette.size
-      val info = a3Palette.map(_ => allPassInfo)
+      val info = a3Palette.map(_ => noPassInfo)
       currTileset.tileInfo.insert(priorSize, info : _*)
     }
     updateTileView()
@@ -188,7 +188,7 @@ class TilesetBuilder extends Savable {
       val priorSize = currTileset.a1Size() + currTileset.a2Size() + currTileset.a3Size()
       currTileset.tileInfo.removeRange(priorSize, priorSize + currTileset.a4Size())
       currTileset.a4Size() = a4Palette.size
-      val info = a4Palette.map(_ => allPassInfo)
+      val info = a4Palette.zipWithIndex.map{case (_, i) => if ((i / 8) % 2 == 0) allPassInfo else noPassInfo}
       currTileset.tileInfo.insert(priorSize, info : _*)
     }
     updateTileView()
@@ -214,7 +214,7 @@ class TilesetBuilder extends Savable {
       val priorSize = currTileset.a1Size() + currTileset.a2Size() + currTileset.a3Size() + currTileset.a4Size() + currTileset.a5Size()
       currTileset.tileInfo.removeRange(priorSize, priorSize + currTileset.bSize())
       currTileset.bSize() = bPalette.size
-      val info = bPalette.map(_ => allPassInfo)
+      val info = bPalette.zipWithIndex.map{case (_, i) => if (i != 0) doodadInfo else allPassInfo}
       currTileset.tileInfo.insert(priorSize, info : _*)
     }
     updateTileView()
@@ -227,7 +227,7 @@ class TilesetBuilder extends Savable {
       val priorSize = currTileset.a1Size() + currTileset.a2Size() + currTileset.a3Size() + currTileset.a4Size() + currTileset.a5Size() + currTileset.bSize()
       currTileset.tileInfo.removeRange(priorSize, priorSize + currTileset.cSize())
       currTileset.cSize() = cPalette.size
-      val info = cPalette.map(_ => allPassInfo)
+      val info = cPalette.map(_ => doodadInfo)
       currTileset.tileInfo.insert(priorSize, info : _*)
     }
     updateTileView()
@@ -255,12 +255,14 @@ class TilesetBuilder extends Savable {
   }
   
   def updateTile(): Unit = {
-    currTileset.tileInfo(currTileIndex) = TileInfo(
-        doesPassNorth.selected(),
-        doesPassEast.selected(),
-        doesPassSouth.selected(),
-        doesPassWest.selected(),
-        isCounter.selected())
+    val northFlag = if (doesPassNorth.selected()) TileInfo.PassNorth else TileInfo.NoPass
+    val eastFlag = if (doesPassEast.selected()) TileInfo.PassEast else TileInfo.NoPass
+    val southFlag = if (doesPassSouth.selected()) TileInfo.PassSouth else TileInfo.NoPass
+    val westFlag = if (doesPassWest.selected()) TileInfo.PassWest else TileInfo.NoPass
+    val counterFlag = if (isCounter.selected()) TileInfo.IsCounter else TileInfo.NoPass
+    val overwriteFlag = currTileset.tileInfo(currTileIndex).flags & TileInfo.Overwrite
+    val flags = northFlag | eastFlag | southFlag | westFlag | counterFlag | overwriteFlag
+    currTileset.tileInfo(currTileIndex) = TileInfo(flags)
   }
   
   def saveTo(file: File): Unit = {
@@ -289,7 +291,9 @@ class TilesetBuilder extends Savable {
     tilesetList.refresh()
   }
   
-  private def allPassInfo = TileInfo(true, true, true, true, false)
+  private def allPassInfo = TileInfo(TileInfo.PassAll)
+  private def noPassInfo = TileInfo(TileInfo.NoPass)
+  private def doodadInfo = TileInfo(TileInfo.NoPass | TileInfo.Overwrite)
 }
 
 object TilesetBuilder {
diff --git a/FakeMon/src/fmon/world/GameMap.scala b/FakeMon/src/fmon/world/GameMap.scala
index 79c0fa7..7bed438 100644
--- a/FakeMon/src/fmon/world/GameMap.scala
+++ b/FakeMon/src/fmon/world/GameMap.scala
@@ -19,6 +19,11 @@ class GameMap(val width: Int, val height: Int, val tileset: Tileset) {
   
   def tileInfo(index: Int) = tileset.infoOf(tiles(index))
   def tileInfo(pos: Position) = tileset.infoOf(this(pos))
+  def compositeInfo(pos: Position) = {
+    val gi = tileset.infoOf(this(pos))
+    val di = tileset.infoOf(doodad(pos))
+    if (di.doesOverwrite) di else gi
+  }
   
   def saveTo(file: File): Unit = {
     val ostream = new ObjectOutputStream(new BufferedOutputStream(new FileOutputStream(file)))
@@ -59,7 +64,8 @@ class GameMap(val width: Int, val height: Int, val tileset: Tileset) {
     tiles(index).build(dirs.toSet).croppedImage()
   }
   
-  def pt2index(x: Int, y: Int) = y * width + x
+  def pt2index(x: Int, y: Int): Int = y * width + x
+  def pt2index(pos: Position): Int = pt2index(pos.x, pos.y)
   def index2x(i: Int) = i % width
   def index2y(i: Int) = i / width
   
diff --git a/FakeMon/src/fmon/world/Tileset.scala b/FakeMon/src/fmon/world/Tileset.scala
index d6c47af..5c3bc30 100644
--- a/FakeMon/src/fmon/world/Tileset.scala
+++ b/FakeMon/src/fmon/world/Tileset.scala
@@ -12,13 +12,31 @@ class Tileset(val groundTiles: IndexedSeq[AutoTile], val doodadTiles: IndexedSeq
   val infoOf = (groundTiles.zipWithIndex.map{case (t, i) => (t, groundInfo(i))} ++ doodadTiles.zipWithIndex.map{case (t, i) => (t, doodadInfo(i))}).toMap
 }
 
-case class TileInfo(
-    val doesPassNorth: Boolean,
-    val doesPassEast: Boolean,
-    val doesPassSouth: Boolean,
-    val doesPassWest: Boolean,
-    val isCounter: Boolean) {
+case class TileInfo(val flags: Int = TileInfo.PassAll) {
+  def doesPassNorth = (flags & TileInfo.PassNorth) != 0
+  def doesPassEast = (flags & TileInfo.PassEast) != 0
+  def doesPassSouth = (flags & TileInfo.PassSouth) != 0
+  def doesPassWest = (flags & TileInfo.PassWest) != 0
   
+  def doesOverwrite = (flags & TileInfo.Overwrite) != 0
+  
+  def isCounter = (flags & TileInfo.IsCounter) != 0
+}
+
+
+object TileInfo {
+  val PassNorth = 0x0001
+  val PassEast = 0x0002
+  val PassSouth = 0x0004
+  val PassWest = 0x0008
+  val PassAll = PassNorth | PassEast | PassSouth | PassWest
+  val NoPass = 0
+  
+  val Overwrite = 0x0010
+  val Underfoot = 0x0020
+  val Overhead = 0x0040
+  
+  val IsCounter = 0x0100
 }
 
 case class TilesetToken(
diff --git a/FakeMon/src/fmon/world/ui/GameView.scala b/FakeMon/src/fmon/world/ui/GameView.scala
index c07f554..3471e8b 100644
--- a/FakeMon/src/fmon/world/ui/GameView.scala
+++ b/FakeMon/src/fmon/world/ui/GameView.scala
@@ -124,7 +124,7 @@ class GameView {
       if (hero.pose != dir.toString()) {
         hero.pose = dir.toString()
       } else {
-        val info = level.tileInfo(hero.pos + dir)
+        val info = level.compositeInfo(hero.pos + dir)
         val canPass = (dir.x < 0 && info.doesPassEast) || (dir.x > 0 && info.doesPassWest) || 
             (dir.y < 0 && info.doesPassSouth) || (dir.y > 0 && info.doesPassNorth)
         if (canPass) {