diff --git a/LICENSE b/LICENSE
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+++ b/LICENSE
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+                    GNU AFFERO GENERAL PUBLIC LICENSE
+                       Version 3, 19 November 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
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+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If your software can interact with users remotely through a computer
+network, you should also make sure that it provides a way for users to
+get its source.  For example, if your program is a web application, its
+interface could display a "Source" link that leads users to an archive
+of the code.  There are many ways you could offer source, and different
+solutions will be better for different programs; see section 13 for the
+specific requirements.
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU AGPL, see
+<http://www.gnu.org/licenses/>.
diff --git a/Setup.hs b/Setup.hs
new file mode 100644
--- /dev/null
+++ b/Setup.hs
@@ -0,0 +1,2 @@
+import Distribution.Simple
+main = defaultMain
diff --git a/antisplice.cabal b/antisplice.cabal
new file mode 100644
--- /dev/null
+++ b/antisplice.cabal
@@ -0,0 +1,68 @@
+-- Initial antisplice.cabal generated by cabal init.  For further 
+-- documentation, see http://haskell.org/cabal/users-guide/
+
+-- The name of the package.
+name:                antisplice
+
+-- The package version.  See the Haskell package versioning policy (PVP) 
+-- for standards guiding when and how versions should be incremented.
+-- http://www.haskell.org/haskellwiki/Package_versioning_policy
+-- PVP summary:      +-+------- breaking API changes
+--                   | | +----- non-breaking API additions
+--                   | | | +--- code changes with no API change
+version:             0.7.0.0
+
+-- A short (one-line) description of the package.
+synopsis:            An engine for text-based dungeons.
+
+-- A longer description of the package.
+-- description:         
+
+-- The license under which the package is released.
+license:             AGPL-3
+
+-- The file containing the license text.
+license-file:        LICENSE
+
+-- The package author(s).
+author:              Marvin Cohrs
+
+-- An email address to which users can send suggestions, bug reports, and 
+-- patches.
+maintainer:          marvin.cohrs@gmx.net
+
+-- A copyright notice.
+-- copyright:           
+
+category:            Game
+
+build-type:          Simple
+
+-- Extra files to be distributed with the package, such as examples or a 
+-- README.
+-- extra-source-files:  
+
+-- Constraint on the version of Cabal needed to build this package.
+cabal-version:       >=1.10
+
+
+library
+  -- Modules exported by the library.
+  exposed-modules:     Game.Antisplice.Prototypes, Game.Antisplice.Templates, Game.Antisplice.Lang, Game.Antisplice.Monad, Game.Antisplice.Rooms, Game.Antisplice.Errors, Game.Antisplice.Utils.TST, Game.Antisplice.Utils.AVL, Game.Antisplice.Utils.Run, Game.Antisplice.Utils.BST, Game.Antisplice.Utils.Graph, Game.Antisplice.Utils.Counter, Game.Antisplice.Utils.Fail, Game.Antisplice.Monad.Dungeon, Game.Antisplice.Terminal.Repl, Game.Antisplice.Events, Game.Antisplice.Monad.Vocab, Game.Antisplice.Utils.Atoms
+  
+  -- Modules included in this library but not exported.
+  -- other-modules:       
+  
+  -- LANGUAGE extensions used by modules in this package.
+  other-extensions:    TemplateHaskell, QuasiQuotes, FlexibleInstances, MultiParamTypeClasses, TypeSynonymInstances, FlexibleContexts, UndecidableInstances, RankNTypes, TypeFamilies, FunctionalDependencies
+  
+  -- Other library packages from which modules are imported.
+  build-depends:       base >=4.6 && <4.7, chatty >=0.2 && <0.3, text >=0.11 && <0.12, template-haskell >=2.8 && <2.9, mtl >=2.1 && <2.2, transformers >=0.3 && <0.4, haskeline >= 0.7 && < 0.8, time >= 1.4 && < 1.5
+  
+  -- Directories containing source files.
+  hs-source-dirs:      src
+  
+  -- Base language which the package is written in.
+  default-language:    Haskell2010
+  
+  ghc-options: -threaded
diff --git a/src/Game/Antisplice/Errors.hs b/src/Game/Antisplice/Errors.hs
new file mode 100644
--- /dev/null
+++ b/src/Game/Antisplice/Errors.hs
@@ -0,0 +1,38 @@
+{-
+  This module is part of Antisplice.
+  Copyleft (c) 2014 Marvin Cohrs
+
+  All wrongs reversed. Sharing is an act of love, not crime.
+  Please share Antisplice with everyone you like.
+
+  Antisplice is free software: you can redistribute it and/or modify
+  it under the terms of the GNU Affero General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  Antisplice is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+  GNU Affero General Public License for more details.
+
+  You should have received a copy of the GNU Affero General Public License
+  along with Antisplice. If not, see <http://www.gnu.org/licenses/>.
+-}
+
+-- | Provides the error datatype for Antisplice
+module Game.Antisplice.Errors where
+
+import Game.Antisplice.Utils.Fail
+
+-- | Antisplice errors
+data SplErr = UnknownError
+            | QuitError
+            | DoneError  
+            | UnintellegibleError
+            | VerbMustFirstError
+            | CantSeeOneError
+            | WhichOneError  
+            | CantWalkThereError deriving Show
+
+-- | Alias for 'FailT' 'SplErr'
+type SplErrT m = FailT SplErr m
diff --git a/src/Game/Antisplice/Events.hs b/src/Game/Antisplice/Events.hs
new file mode 100644
--- /dev/null
+++ b/src/Game/Antisplice/Events.hs
@@ -0,0 +1,142 @@
+{-# LANGUAGE RankNTypes, FlexibleContexts #-}
+
+{-
+  This module is part of Antisplice.
+  Copyleft (c) 2014 Marvin Cohrs
+
+  All wrongs reversed. Sharing is an act of love, not crime.
+  Please share Antisplice with everyone you like.
+
+  Antisplice is free software: you can redistribute it and/or modify
+  it under the terms of the GNU Affero General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  Antisplice is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+  GNU Affero General Public License for more details.
+
+  You should have received a copy of the GNU Affero General Public License
+  along with Antisplice. If not, see <http://www.gnu.org/licenses/>.
+-}
+
+-- | Provides setters for the various events
+module Game.Antisplice.Events (
+  OnEnter(..), OnFirstEnter(..), OnLook(..), OnAnnounce(..), OnSight(..), OnFirstSight(..), OnAcquire(..), OnFirstAcquire(..),
+  OnInspection(..), OnFirstInspection(..), OnLookInto(..), OnRead(..), OnRoomEnter(..), OnRoomLeave(..)
+  ) where
+
+import Game.Antisplice.Monad
+import Game.Antisplice.Rooms
+import Game.Antisplice.Monad.Dungeon
+
+roomOnFirstEnter :: MonadRoom m => Trigger -> m ()
+roomOnFirstEnter t = modifyRoomState $ \s -> s{roomTriggerOnFirstEnterOf=t}
+
+roomOnEachEnter :: MonadRoom m => Trigger -> m ()
+roomOnEachEnter t = modifyRoomState $ \s -> s{roomTriggerOnEachEnterOf=t}
+
+roomOnLook :: MonadRoom m => Trigger -> m ()
+roomOnLook t = modifyRoomState $ \s -> s{roomTriggerOnLookOf=t}
+
+roomOnAnnounce :: MonadRoom m => Trigger -> m ()
+roomOnAnnounce t = modifyRoomState $ \s -> s{roomTriggerOnAnnounceOf=t}
+
+objectOnFirstSight :: MonadObject m => Trigger -> m ()
+objectOnFirstSight t = modifyObjectState $ \s -> s{objectTriggerOnFirstSightOf=t}
+
+objectOnEachSight :: MonadObject m => Trigger -> m ()
+objectOnEachSight t = modifyObjectState $ \s -> s{objectTriggerOnEachSightOf=t}
+
+objectOnFirstAcquire :: MonadObject m => Trigger -> m ()
+objectOnFirstAcquire t = modifyObjectState $ \s -> s{objectTriggerOnFirstAcquireOf=t}
+
+objectOnEachAcquire :: MonadObject m => Trigger -> m ()
+objectOnEachAcquire t = modifyObjectState $ \s -> s{objectTriggerOnEachAcquireOf=t}
+
+objectOnFirstInspection :: MonadObject m => Trigger -> m ()
+objectOnFirstInspection t = modifyObjectState $ \s -> s{objectTriggerOnFirstInspectionOf=t}
+
+objectOnEachInspection :: MonadObject m => Trigger -> m ()
+objectOnEachInspection t = modifyObjectState $ \s -> s{objectTriggerOnEachInspectionOf=t}
+
+objectOnLookAt :: MonadObject m => Trigger -> m ()
+objectOnLookAt t = modifyObjectState $ \s -> s{objectTriggerOnLookAtOf=t}
+
+objectOnLookInto :: MonadObject m => Trigger -> m ()
+objectOnLookInto t = modifyObjectState $ \s -> s{objectTriggerOnLookIntoOf=t}
+
+objectOnRead :: MonadObject m => Trigger -> m ()
+objectOnRead t = modifyObjectState $ \s -> s{objectTriggerOnReadOf=t}
+
+objectOnEnter :: MonadObject m => Trigger -> m ()
+objectOnEnter t = modifyObjectState $ \s -> s{objectTriggerOnEnterOf=t}
+
+objectOnRoomEnter :: MonadObject m => Trigger -> m ()
+objectOnRoomEnter t = modifyObjectState $ \s -> s{objectTriggerOnRoomEnterOf=t}
+
+objectOnRoomLeave :: MonadObject m => Trigger -> m ()
+objectOnRoomLeave t = modifyObjectState $ \s -> s{objectTriggerOnRoomLeaveOf=t}
+
+objectOnAnnounce :: MonadObject m => Trigger -> m ()
+objectOnAnnounce t = modifyObjectState $ \s -> s{objectTriggerOnAnnounceOf=t}
+
+-- | Triggered when the user enters a room or object.
+class OnEnter e where onEnter :: Trigger -> e ()
+instance Monad m => OnEnter (RoomT m) where onEnter = roomOnEachEnter
+instance Monad m => OnEnter (ObjectT m) where onEnter = objectOnEnter
+
+-- | Triggered when the user enters a room the first time.
+class OnFirstEnter e where onFirstEnter :: Trigger -> e ()
+instance Monad m => OnFirstEnter (RoomT m) where onFirstEnter = roomOnFirstEnter
+
+-- | Triggered when the user looks around or looks at a specific object.
+class OnLook e where onLook :: Trigger -> e ()
+instance Monad m => OnLook (RoomT m) where onLook = roomOnLook
+instance Monad m => OnLook (ObjectT m) where onLook = objectOnLookAt
+
+-- | Triggered when the user looks into a specific object.
+class OnLookInto e where onLookInto :: Trigger -> e ()
+instance Monad m => OnLookInto (ObjectT m) where onLookInto = objectOnLookInto
+
+-- | Triggered when (a) the room is announced (e.g. when entered), (b) the user looks around in the room containing the object.
+class OnAnnounce e where onAnnounce :: Trigger -> e ()
+instance Monad m => OnAnnounce (RoomT m) where onAnnounce = roomOnAnnounce
+instance Monad m => OnAnnounce (ObjectT m) where onAnnounce = objectOnAnnounce
+
+-- | Triggered when the user sees the object (e.g. he enters its room).
+class OnSight e where onSight :: Trigger -> e ()
+instance Monad m => OnSight (ObjectT m) where onSight = objectOnEachSight
+
+-- | Triggered when the user sees the object the first time.
+class OnFirstSight e where onFirstSight :: Trigger -> e ()
+instance Monad m => OnFirstSight (ObjectT m) where onFirstSight = objectOnFirstSight
+
+-- | Triggered when the user acquires the object.
+class OnAcquire e where onAcquire :: Trigger -> e ()
+instance Monad m => OnAcquire (ObjectT m) where onAcquire = objectOnEachAcquire
+
+-- | Triggered when the user acquires the object the first time.
+class OnFirstAcquire e where onFirstAcquire :: Trigger -> e ()
+instance Monad m => OnFirstAcquire (ObjectT m) where onFirstAcquire = objectOnFirstAcquire
+
+-- | Triggered when the user inspects the object (looks at/into it, listens to it, ...)
+class OnInspection e where onInspection :: Trigger -> e ()
+instance Monad m => OnInspection (ObjectT m) where onInspection = objectOnEachInspection
+
+-- | Triggered when the user inspects the object the first time.
+class OnFirstInspection e where onFirstInspection :: Trigger -> e ()
+instance Monad m => OnFirstInspection (ObjectT m) where onFirstInspection = objectOnFirstInspection
+
+-- | Triggered when the user reads the object.
+class OnRead e where onRead :: Trigger -> e ()
+instance Monad m => OnRead (ObjectT m) where onRead = objectOnRead
+
+-- | Triggered when the object (e.g. a mob with a route) enters the room of the user.
+class OnRoomEnter e where onRoomEnter :: Trigger -> e ()
+instance Monad m => OnRoomEnter (ObjectT m) where onRoomEnter = objectOnRoomEnter
+
+-- | Triggered when the object (e.g. a mob with a route) leaves the room of the user.
+class OnRoomLeave e where onRoomLeave :: Trigger -> e ()
+instance Monad m => OnRoomLeave (ObjectT m) where onRoomLeave = objectOnRoomLeave
diff --git a/src/Game/Antisplice/Lang.hs b/src/Game/Antisplice/Lang.hs
new file mode 100644
--- /dev/null
+++ b/src/Game/Antisplice/Lang.hs
@@ -0,0 +1,191 @@
+{-# LANGUAGE FlexibleContexts, RankNTypes #-}
+
+{-
+  This module is part of Antisplice.
+  Copyleft (c) 2014 Marvin Cohrs
+
+  All wrongs reversed. Sharing is an act of love, not crime.
+  Please share Antisplice with everyone you like.
+
+  Antisplice is free software: you can redistribute it and/or modify
+  it under the terms of the GNU Affero General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  Antisplice is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+  GNU Affero General Public License for more details.
+
+  You should have received a copy of the GNU Affero General Public License
+  along with Antisplice. If not, see <http://www.gnu.org/licenses/>.
+-}
+
+-- | Provides all methods for language intellection.
+module Game.Antisplice.Lang (act) where
+
+import Text.Chatty.Printer
+import Text.Chatty.Scanner
+import Text.Chatty.Expansion
+import Game.Antisplice.Errors
+import Game.Antisplice.Monad
+import Game.Antisplice.Monad.Dungeon
+import Game.Antisplice.Monad.Vocab
+import Game.Antisplice.Utils.Graph
+import Game.Antisplice.Utils.AVL
+import Game.Antisplice.Utils.TST
+import Game.Antisplice.Rooms
+import Control.Monad.Error
+import Text.Printf
+import Data.Text (unpack)
+
+aliases :: [(String,String)]
+aliases =
+  ("l","look"):
+  ("n","go north"):
+  ("ne","go northeast"):
+  ("e","go east"):
+  ("se","go southeast"):
+  ("s","go south"):
+  ("sw","go southwest"):
+  ("w","go west"):
+  ("nw","go northwest"):
+  ("u","ascend"):
+  ("d","descend"):
+  ("q","quit"):
+  ("i","list inventory"):
+  ("ex","list exits"):
+  ("get","acquire"):
+  ("take","acquire"):
+  ("show","list"):
+  []
+
+defVocab :: TST Token
+defVocab = foldr (\(k,v) -> tstInsert k (v k)) EmptyTST (
+  ("look",Verb):
+  ("quit",Verb):
+  ("read",Verb):
+  ("acquire",Verb):
+  ("drop",Verb):
+  ("idiot",Noun):
+  ("first",Ordn 1):
+  ("next",Ordn 1):
+  ("primary",Ordn 1):
+  ("second",Ordn 2):
+  ("commit",Verb):
+  ("suicide",Noun):
+  ("go",Verb):
+  ("ascend",Verb):
+  ("descend",Verb):
+  ("north",Fixe):
+  ("south",Fixe):
+  ("east",Fixe):
+  ("west",Fixe):
+  ("northeast",Fixe):
+  ("northwest",Fixe):
+  ("southeast",Fixe):
+  ("southwest",Fixe):
+  ("at",Prep):
+  ("enter",Verb):
+  ("list",Verb):
+  ("exits",Fixe):
+  ("inventory",Fixe):
+  [])
+
+replaceAliases :: [String] -> [String]
+replaceAliases [] = []
+replaceAliases (s:ss) = words (aliasOf s) ++ replaceAliases ss
+  where aliasOf x = case filter ((==x).fst) aliases of
+          [] -> x
+          (a:_) -> snd a
+
+isIntellegible :: Token -> Bool
+isIntellegible (Unintellegible _) = False
+isIntellegible _ = True
+
+isNoun :: Token -> Bool
+isNoun (Noun _) = True
+isNoun _ = False
+
+isAdj :: Token -> Bool
+isAdj (Adj _) = True
+isAdj _ = False
+
+mergeNouns :: [Token] -> [Token]
+mergeNouns [] = []
+mergeNouns (Noun s:ts) = Nounc [] Nothing s : mergeNouns ts
+mergeNouns ts@(Adj _:_) =
+  let as = takeWhile isAdj ts
+      ns = dropWhile isAdj ts
+  in case ns of
+    (n:nx) -> Nounc (map (\(Adj a) -> a) as) Nothing ((\(Noun n) -> n) n) : mergeNouns nx
+    _ -> as
+mergeNouns (o@(Ordn i _):ts) =
+  let as = takeWhile isAdj ts
+      ns = dropWhile isAdj ts
+  in case ns of
+    (n:nx) -> Nounc (map (\(Adj a) -> a) as) (Just i) ((\(Noun n) -> n) n) : mergeNouns nx
+    _ -> o:as
+mergeNouns (t:ts) = t : mergeNouns ts
+
+-- | Run a given input line.
+act :: String -> ChattyDungeonM ()
+act s = do
+  ts <- mapM lookupVocab $ replaceAliases $ words s
+  let ss = mergeNouns ts
+  unless (all isIntellegible ss) $ throwError UnintellegibleError
+  case ss of
+    [] -> return ()
+    (Verb v:_) -> act' ss
+    _ -> throwError VerbMustFirstError
+  return ()
+
+act' (Verb "quit":[]) = throwError QuitError
+act' (Verb "look":[]) = roomTriggerOnLookOf =<< getRoomState
+act' (Verb "look":Prep "at":n@Nounc{}:[]) = getObject n >>=  objectTriggerOnLookAtOf
+act' (Verb "read":n@Nounc{}:[]) = getObject n >>= objectTriggerOnReadOf
+act' (Verb "enter":n@Nounc{}:[]) = getObject n >>= objectTriggerOnEnterOf
+act' (Verb "ascend":[]) = changeRoom Up
+act' (Verb "descend":[]) = changeRoom Down
+act' (Verb "go":Fixe d:[]) =
+  changeRoom $ case d of
+    "north" -> North
+    "south" -> South
+    "east" -> East
+    "west" -> West
+    "northeast" -> NorthEast
+    "northwest" -> NorthWest
+    "southeast" -> SouthEast
+    "southwest" -> SouthWest
+    "up" -> Up
+    "down" -> Down
+act' (Verb "list":Fixe "exits":[]) = do
+  s <- getDungeonState
+  let (Just r) = currentRoomOf s
+  forM_ (listEdges r $ roomsOf s) $ \(l,n) -> do
+    mprint "  " >> mprint (show l) >> mprint " -> "
+    mprintLn =<< withRoom n getRoomTitle
+act' (Verb "list":Fixe "inventory":[]) = do
+  ps <- getPlayerState
+  mprintLn "Your inventory:"
+  forM_ (avlInorder $ playerInventoryOf ps) $ \os -> mprintLn $ printf "  %s" $ unpack $ objectTitleOf os
+act' (Verb "acquire":n@Nounc{}:[]) = getObject n >>= (acquireObject . objectIdOf)
+act' (Verb "drop":n@Nounc{}:[]) = getObject n >>= (dropObject . objectIdOf)
+act' _ = throwError UnintellegibleError
+
+getObject :: (MonadRoom m,MonadError SplErr m,MonadPlayer m) => Token -> m ObjectState
+getObject (Nounc as i n) = do
+  rs <- getRoomState
+  ps <- getPlayerState
+  let os = avlInorder (roomObjectsOf rs) ++ avlInorder (playerInventoryOf ps)
+      ns1 = filter (elem n . objectNamesOf) os
+      ns2 = foldr (\a ns -> filter (elem a . objectAttributesOf) ns) ns1 as
+  case ns2 of
+    [] -> throwError CantSeeOneError
+    xs -> case i of
+      Nothing -> case xs of
+        [x] -> return x
+        _ -> throwError WhichOneError
+      Just idx -> if idx > length xs then throwError CantSeeOneError
+                                     else return (xs !! (idx-1))
+    
diff --git a/src/Game/Antisplice/Monad.hs b/src/Game/Antisplice/Monad.hs
new file mode 100644
--- /dev/null
+++ b/src/Game/Antisplice/Monad.hs
@@ -0,0 +1,46 @@
+{-# LANGUAGE TemplateHaskell, TypeSynonymInstances, FlexibleInstances, MultiParamTypeClasses, FlexibleContexts #-}
+
+{-
+  This module is part of Antisplice.
+  Copyleft (c) 2014 Marvin Cohrs
+
+  All wrongs reversed. Sharing is an act of love, not crime.
+  Please share Antisplice with everyone you like.
+
+  Antisplice is free software: you can redistribute it and/or modify
+  it under the terms of the GNU Affero General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  Antisplice is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+  GNU Affero General Public License for more details.
+
+  You should have received a copy of the GNU Affero General Public License
+  along with Antisplice. If not, see <http://www.gnu.org/licenses/>.
+-}
+
+-- | Provides some class instances. Nothing really interesting here.
+module Game.Antisplice.Monad where
+
+import Game.Antisplice.Templates
+import Game.Antisplice.Utils.Fail
+import Game.Antisplice.Utils.Counter
+import Game.Antisplice.Monad.Dungeon
+import Game.Antisplice.Monad.Vocab
+import Game.Antisplice.Utils.Atoms
+import Game.Antisplice.Errors
+import Control.Monad.Trans.Class
+import Text.Chatty.Templates
+import Text.Chatty.Interactor.Templates
+--import Language.Haskell.TH
+
+mkInteractor ''SplErrT mkChatty mkRoom mkDungeon mkObject mkCounter mkPlayer mkIO mkVocab mkAtoms
+mkInteractor ''DungeonT mkChatty (mkFail ''SplErr) mkCounter mkIO  mkVocab mkAtoms
+mkInteractor ''RoomT mkChatty (mkFail ''SplErr) mkCounter mkIO mkVocab mkAtoms
+mkInteractor ''ObjectT mkChatty (mkFail ''SplErr) mkCounter mkIO mkVocab mkAtoms
+mkInteractor ''CounterT mkChatty (mkFail ''SplErr) mkRoom mkObject mkDungeon mkPlayer mkIO mkVocab mkAtoms
+mkInteractor ''PlayerT mkChatty (mkFail ''SplErr) mkCounter mkIO mkVocab mkAtoms
+mkInteractor ''VocabT mkChatty (mkFail ''SplErr) mkCounter mkDungeon mkRoom mkAtoms mkPlayer
+mkInteractor ''AtomStoreT mkChatty (mkFail ''SplErr) mkDungeon mkRoom mkVocab mkPlayer
diff --git a/src/Game/Antisplice/Monad/Dungeon.hs b/src/Game/Antisplice/Monad/Dungeon.hs
new file mode 100644
--- /dev/null
+++ b/src/Game/Antisplice/Monad/Dungeon.hs
@@ -0,0 +1,275 @@
+{-# LANGUAGE FlexibleInstances, MultiParamTypeClasses, RankNTypes, FlexibleContexts, TypeFamilies #-}
+
+{-
+  This module is part of Antisplice.
+  Copyleft (c) 2014 Marvin Cohrs
+
+  All wrongs reversed. Sharing is an act of love, not crime.
+  Please share Antisplice with everyone you like.
+
+  Antisplice is free software: you can redistribute it and/or modify
+  it under the terms of the GNU Affero General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  Antisplice is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+  GNU Affero General Public License for more details.
+
+  You should have received a copy of the GNU Affero General Public License
+  along with Antisplice. If not, see <http://www.gnu.org/licenses/>.
+-}
+
+-- | Provides the basic data types and monads for Antisplice.
+module Game.Antisplice.Monad.Dungeon where
+
+import Text.Chatty.Printer
+import Text.Chatty.Scanner
+import Text.Chatty.Expansion
+import System.Chatty.Misc
+import Text.Chatty.Extended.Printer
+import Game.Antisplice.Utils.Graph
+import Game.Antisplice.Utils.BST
+import Game.Antisplice.Utils.AVL
+import Game.Antisplice.Utils.Atoms
+import Game.Antisplice.Errors
+import Game.Antisplice.Utils.Fail
+import Game.Antisplice.Utils.Counter
+import Game.Antisplice.Monad.Vocab
+import Control.Arrow
+import Control.Monad.Error
+import Control.Monad.Trans.Class
+import Data.Text
+import Control.Monad
+import Data.Time.Clock
+
+-- | Matches any 'MonadDungeon' context
+type DungeonM a = forall m.(MonadDungeon m) => m a
+-- | Matches any 'MonadDungeon' context that also implements most of the Chatty classes and some of our utility classes.
+type ChattyDungeonM a = forall m.(Functor m,ExtendedPrinter m,MonadScanner m,MonadExpand m,ExpanderEnv m,MonadDungeon m,MonadError SplErr m,MonadAtoms m,MonadClock m,MonadVocab m) => m a
+-- | The common type of all event handlers.
+type Trigger = ChattyDungeonM ()
+-- | A boxed 'Trigger' to avoid ImpredicativeTypes
+newtype TriggerBox = TriggerBox { runTrigger :: Trigger }
+
+-- | Key for item or player statistics
+data StatKey = STR -- ^ Strength
+             | AGI -- ^ Agility
+             | STA -- ^ Stamina
+             | INT -- ^ Intelligence
+             | SPI -- ^ Spirit
+             | ARM -- ^ Armor
+             deriving (Ord,Eq)
+-- | Key for equipment slot
+data EquipKey = MainHand | OffHand | Chest | Feet | Wrists | Waist | Head | Legs | Back | Hands | Neck | Finger1 | Finger2 deriving (Ord,Eq)
+
+-- | State type for RoomT
+data RoomState = RoomState {
+    roomDescOf :: !Text,
+    roomTitleOf :: !Text,
+    roomObjectsOf :: AVL ObjectState,
+    roomTriggerOnFirstEnterOf :: Trigger,
+    roomTriggerOnEachEnterOf :: Trigger,
+    roomTriggerOnLeaveOf :: Trigger,
+    roomTriggerOnLookOf :: Trigger,
+    roomTriggerOnAnnounceOf :: Trigger
+  }
+
+-- | The room monad. Used to create or modify room data.
+newtype RoomT m a = Room { runRoomT :: RoomState -> m (a,RoomState) }
+
+instance Functor m => Functor (RoomT m) where
+  fmap f a = Room $ \s -> fmap (first f) $ runRoomT a s
+
+instance Monad m => Monad (RoomT m) where
+  return a = Room $ \s -> return (a,s)
+  m >>= f = Room $ \s -> do (a,s') <- runRoomT m s; runRoomT (f a) s'
+
+instance MonadTrans RoomT where
+  lift m = Room $ \s -> do a <- m; return (a,s)
+
+-- | Typeclass for all room monads.
+class Monad m => MonadRoom m where
+  -- | Get the room state
+  getRoomState :: m RoomState
+  -- | Put the room state
+  putRoomState :: RoomState -> m ()
+
+instance Monad m => MonadRoom (RoomT m) where
+  getRoomState = Room $ \s -> return (s,s)
+  putRoomState s = Room $ \_ -> return ((),s)
+
+-- | Typeclass for all types that are convertible to or from 'Text'
+class IsText t where
+  toText :: t -> Text
+  fromText :: Text -> t
+
+instance IsText Text where
+  toText = id
+  fromText = id
+
+instance IsText String where
+  toText = pack
+  fromText = unpack
+
+-- | Implications a object infers for its containing room
+data Implication = DescSeg (Atom String) -- ^ An additional particle for the room description (e.g. saying that XYZ is there).
+
+-- | Object features.
+data Feature = Damagable  -- ^ May take damage.
+             | Acquirable -- ^ May be acquired.
+             | Equipable EquipKey  -- ^ May be equipped at the given slot.
+             | Mobile  -- ^ May move around.
+             deriving (Ord,Eq)
+
+-- | Phantom ID type for objects.
+newtype ObjectId = ObjectId Int deriving (Eq,Ord)
+
+-- | State type for ObjectT
+data ObjectState = ObjectState {
+    objectIdOf :: !ObjectId,
+    objectTitleOf :: !Text,
+    objectDescOf :: !Text,
+    objectNamesOf :: ![String],
+    objectAttributesOf :: ![String],
+    objectOnceSeenOf :: !Bool,
+    objectOnceAcquiredOf :: !Bool,
+    objectOnceInspectedOf :: !Bool,
+    objectOnceEquippedOf :: !Bool,
+    objectMaxHealthOf :: !Int,
+    objectCurHealthOf :: !Int,
+    objectStatsOf :: AVL (StatKey,Int),
+    objectRouteOf :: ![NodeId],
+    objectFeaturesOf :: AVL (Feature,()),
+    objectImplicationsOf :: [Implication],
+    objectTriggerOnFirstSightOf :: Trigger,
+    objectTriggerOnEachSightOf :: Trigger,
+    objectTriggerOnFirstAcquireOf :: Trigger,
+    objectTriggerOnEachAcquireOf :: Trigger,
+    objectTriggerOnFirstInspectionOf :: Trigger,
+    objectTriggerOnEachInspectionOf :: Trigger,
+    objectTriggerOnLookAtOf :: Trigger,
+    objectTriggerOnLookIntoOf :: Trigger,
+    objectTriggerOnReadOf :: Trigger,
+    objectTriggerOnEnterOf :: Trigger,
+    objectTriggerOnRoomEnterOf :: Trigger,
+    objectTriggerOnRoomLeaveOf :: Trigger,
+    objectTriggerOnAnnounceOf :: Trigger,
+    objectTriggerOnDropOf :: Trigger,
+    objectTriggerOnFirstEquipOf :: Trigger,
+    objectTriggerOnEachEquipOf :: Trigger,
+    objectTriggerOnUnequipOf :: Trigger
+  }
+
+instance Indexable ObjectState ObjectId ObjectState where
+  type IndexOf ObjectState = ObjectId
+  type ValueOf ObjectState = ObjectState
+  indexOf = objectIdOf
+  valueOf = id
+
+-- | The object monad. Used to create or modify objects.
+newtype ObjectT m a = Object { runObjectT :: ObjectState -> m (a,ObjectState) }
+
+instance Functor m => Functor (ObjectT m) where
+  fmap f a = Object $ \s -> fmap (first f) $ runObjectT a s
+
+instance Monad m => Monad (ObjectT m) where
+  return a = Object $ \s -> return (a,s)
+  m >>= f = Object $ \s -> do (a,s') <- runObjectT m s; runObjectT (f a) s'
+
+instance MonadTrans ObjectT where
+  lift m = Object $ \s -> do a <- m; return (a,s)
+
+-- | Typeclass for all object monads
+class Monad m => MonadObject m where
+  -- | Get the object state
+  getObjectState :: m ObjectState
+  -- | Put the object state
+  putObjectState :: ObjectState -> m ()
+
+instance Monad m => MonadObject (ObjectT m) where
+  getObjectState = Object $ \s -> return (s,s)
+  putObjectState s = Object $ \_ -> return ((),s)
+
+-- | State type for PlayerT
+data PlayerState = PlayerState {
+    playerRoomOf :: !NodeId,
+    playerMaxHealthOf :: !Int,
+    playerCurHealthOf :: !Int,
+    playerInventoryOf :: AVL ObjectState,
+    playerEquipOf :: AVL (EquipKey,ObjectState),
+    playerBaseStatsOf :: AVL (StatKey,Int)
+  }
+
+-- | The player monad. Used to create or modify players.
+newtype PlayerT m a = Player { runPlayerT :: PlayerState -> m (a,PlayerState) }
+
+instance Functor m => Functor (PlayerT m) where
+  fmap f a = Player $ \s -> fmap (first f) $ runPlayerT a s
+
+instance Monad m => Monad (PlayerT m) where
+  return a = Player $ \s -> return (a,s)
+  m >>= f = Player $ \s -> do (a,s') <- runPlayerT m s; runPlayerT (f a) s'
+
+instance MonadTrans PlayerT where
+  lift m = Player $ \s -> do a <- m; return (a,s)
+
+-- | Typeclass for all player monads.
+class Monad m => MonadPlayer m where
+  -- | Get the player state.
+  getPlayerState :: m PlayerState
+  -- | Put the player state.
+  putPlayerState :: PlayerState -> m ()
+
+instance Monad m => MonadPlayer (PlayerT m) where
+  getPlayerState = Player $ \s -> return (s,s)
+  putPlayerState s = Player $ \_ -> return ((),s)
+
+-- | 10 directions to go
+data Direction = North | NorthEast | East | SouthEast | South | SouthWest | West | NorthWest | Up | Down deriving (Eq,Show)
+
+-- | State type for DungeonT
+data DungeonState = DungeonState {
+    roomsOf :: Graph RoomState Direction,
+    playerOf :: Maybe PlayerState,
+    timeTriggersOf :: AVL (NominalDiffTime,TriggerBox)
+  }
+
+-- | For compatibility. Earlier versions of DungeonT had a field for that.
+currentRoomOf = fmap playerRoomOf . playerOf
+
+-- | The dungeon monad. Everything runs inside this.
+newtype DungeonT m a = Dungeon { runDungeonT :: DungeonState -> m (a,DungeonState) }
+
+instance Functor m => Functor (DungeonT m) where
+  fmap f a = Dungeon $ \s -> fmap (first f) $ runDungeonT a s
+
+instance Monad m => Monad (DungeonT m) where
+  return a = Dungeon $ \s -> return (a,s)
+  m >>= f = Dungeon $ \s -> do (a,s') <- runDungeonT m s; runDungeonT (f a) s'
+
+instance MonadTrans DungeonT where
+  lift m = Dungeon $ \s -> do a <- m; return (a,s)
+
+instance Monad m => MonadRoom (DungeonT m) where
+  getRoomState = Dungeon $ \s -> case currentRoomOf s of
+    Just r -> return (getNode r $ roomsOf s,s)
+  putRoomState s' = Dungeon $ \s -> case currentRoomOf s of
+    Just r -> return ((),s{roomsOf=setNode r s' $ roomsOf s})
+
+instance Monad m => MonadPlayer (DungeonT m) where
+  getPlayerState = Dungeon $ \s -> case playerOf s of
+    Just p -> return (p,s)
+  putPlayerState s' = Dungeon $ \s -> return ((),s{playerOf=Just s'})
+
+-- | Typeclass for all dungeon monads.
+class (MonadRoom m,MonadPlayer m) => MonadDungeon m where
+  -- | Get the dungeon state.
+  getDungeonState :: m DungeonState
+  -- | Put the dungeon state.
+  putDungeonState :: DungeonState -> m ()
+
+instance Monad m => MonadDungeon (DungeonT m) where
+  getDungeonState = Dungeon $ \s -> return (s,s)
+  putDungeonState s = Dungeon $ \_ -> return ((),s)
diff --git a/src/Game/Antisplice/Monad/Vocab.hs b/src/Game/Antisplice/Monad/Vocab.hs
new file mode 100644
--- /dev/null
+++ b/src/Game/Antisplice/Monad/Vocab.hs
@@ -0,0 +1,74 @@
+{-
+  This module is part of Antisplice.
+  Copyleft (c) 2014 Marvin Cohrs
+
+  All wrongs reversed. Sharing is an act of love, not crime.
+  Please share Antisplice with everyone you like.
+
+  Antisplice is free software: you can redistribute it and/or modify
+  it under the terms of the GNU Affero General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  Antisplice is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+  GNU Affero General Public License for more details.
+
+  You should have received a copy of the GNU Affero General Public License
+  along with Antisplice. If not, see <http://www.gnu.org/licenses/>.
+-}
+
+-- | Provides a monad that collects vocab during dungeon construction and
+-- reproduces it later.
+module Game.Antisplice.Monad.Vocab where
+
+import Control.Arrow
+import Control.Monad
+import Control.Monad.IO.Class
+import Control.Monad.Trans.Class
+import Game.Antisplice.Utils.TST
+
+-- | Algebraic type for primitive and complex tokens.
+data Token = Unintellegible String
+           | Verb String
+           | Prep String
+           | Noun String
+           | Adj String
+           | Ordn Int String
+           | Fixe String
+           | Nounc [String] (Maybe Int) String
+             -- ^ Complex noun, with attributes and maybe ordinal index.
+             deriving Show
+
+-- | The vocab monad. Carries the currently noun vocab as its state.
+newtype VocabT m a = Vocab { runVocabT :: TST Token -> m (a,TST Token) }
+
+instance Functor m => Functor (VocabT m) where
+  fmap f a = Vocab $ \s -> fmap (first f) $ runVocabT a s
+
+instance Monad m => Monad (VocabT m) where
+  return a = Vocab $ \s -> return (a,s)
+  m >>= f = Vocab $ \s -> do (a,s') <- runVocabT m s; runVocabT (f a) s'
+
+instance MonadTrans VocabT where
+  lift m = Vocab $ \s -> do a <- m; return (a,s)
+
+instance MonadIO m => MonadIO (VocabT m) where
+  liftIO = lift . liftIO
+
+-- | Tyepclass for all vocab-memorizing monads.
+class Monad m => MonadVocab m where
+  -- | Lookup a word and return its token.
+  lookupVocab :: String -> m Token
+  -- | Learn a new word.
+  insertVocab :: String -> (String -> Token) -> m ()
+  -- | Check if a word is already known.
+  vocabKnown :: String -> m Bool
+
+instance Monad m => MonadVocab (VocabT m) where
+  lookupVocab k = Vocab $ \s -> case tstLookup k s of
+    Just t -> return (t,s)
+    Nothing -> return (Unintellegible k,s)
+  insertVocab k tc = Vocab $ \s -> return ((),tstInsert k (tc k) s)
+  vocabKnown k = Vocab $ \s -> return (tstContains k s,s)
diff --git a/src/Game/Antisplice/Prototypes.hs b/src/Game/Antisplice/Prototypes.hs
new file mode 100644
--- /dev/null
+++ b/src/Game/Antisplice/Prototypes.hs
@@ -0,0 +1,124 @@
+{-# LANGUAGE TupleSections, FlexibleContexts #-}
+
+{-
+  This module is part of Antisplice.
+  Copyleft (c) 2014 Marvin Cohrs
+
+  All wrongs reversed. Sharing is an act of love, not crime.
+  Please share Antisplice with everyone you like.
+
+  Antisplice is free software: you can redistribute it and/or modify
+  it under the terms of the GNU Affero General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  Antisplice is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+  GNU Affero General Public License for more details.
+
+  You should have received a copy of the GNU Affero General Public License
+  along with Antisplice. If not, see <http://www.gnu.org/licenses/>.
+-}
+
+-- | Provides prototypes for common entities (rooms, objects, mobs).
+module Game.Antisplice.Prototypes where
+
+import Text.Chatty.Printer
+import Text.Chatty.Expansion
+import Text.Chatty.Extended.Printer
+import Control.Monad
+import Control.Monad.Error.Class
+import Game.Antisplice.Monad
+import Game.Antisplice.Monad.Dungeon
+import Game.Antisplice.Monad.Vocab
+import Game.Antisplice.Utils.Atoms
+import Game.Antisplice.Utils.Fail
+import Game.Antisplice.Utils.AVL
+import Game.Antisplice.Utils.Graph
+import Game.Antisplice.Rooms
+import Game.Antisplice.Events
+import Game.Antisplice.Errors
+import Text.Printf
+import Data.Text (pack,unpack)
+
+-- | Construct a simple room from a title and a description.
+ctorRoom :: Monad m => String -> String -> RoomT m ()
+ctorRoom t d = do
+  setRoomTitle t
+  setRoomDesc d
+  onAnnounce $ getRoomTitle >>= eprintLn (Dull Magenta)
+  onLook $ do
+    getRoomDesc >>= expand >>= eprintLn (Dull Green)
+    rs <- getRoomState
+    sequence_ $ avlInorder $ flip fmap (roomObjectsOf rs) $ \os -> objectTriggerOnAnnounceOf os
+
+-- | Construct a sign from a text and some attributes.
+ctorSign :: (MonadAtoms m,MonadVocab m,MonadError SplErr m) => String -> [String] -> ObjectT m ()
+ctorSign t as = do
+  onRead $ eprintLn (Vivid White) =<< expand t
+  lookCountA <- newAtom
+  putAtom lookCountA 0
+  onLook $ do
+    c <- getAtom lookCountA
+    case c :: Int of
+      0 -> mprintLn "This is just a regular sign. There is nothing special about this one in particular."
+      1 -> mprintLn "This REALLY is just a regular sign."
+      2 -> mprintLn "Stop looking at me!"
+      3 -> mprintLn "I'll call the police if you don't stop!"
+      4 -> mprintLn "You hear the sounds of an arriving police car. This is your end :P" >> throwError QuitError
+    putAtom lookCountA (c+1)
+  setObjectTitle "a sign"
+  setObjectDesc "This is a sign with a text written on it."
+  addObjectName "sign"
+  addObjectName "caption"
+  mapM_ (uncurry insertVocab) [("sign",Noun),("caption",Noun)]
+  forM_ as addObjectAttr
+  forM_ as $ uncurry insertVocab . (,Adj)
+
+-- | Construct a mob from a title, some names, a description and some attributes.
+ctorMob :: MonadVocab m => String -> [String] -> String -> [String] -> ObjectT m ()
+ctorMob t ns d as = do
+  onLook $ mprintLn d
+  onRoomEnter $ mprintLn $ printf "%s has entered the room." t
+  onRoomLeave $ mprintLn $ printf "%s has left the room." t
+  onAnnounce $ eprintLn (Dull Cyan) $ printf "  %s is here." t
+  setObjectIsMob True
+  setObjectTitle t
+  setObjectDesc d
+  forM_ ns addObjectName
+  forM_ ns $ uncurry insertVocab . (,Noun)
+  forM_ as addObjectAttr
+  forM_ as $ uncurry insertVocab . (,Adj)
+
+-- | Construct a mob route from some room IDs and a time delay in milliseconds.
+ctorRoute :: (Monad m,Functor m) => [NodeId] -> Integer -> ObjectT m ()
+ctorRoute rs d = do
+  i <- fmap objectIdOf getObjectState
+  setMobRoute rs
+  let cmr :: Trigger
+      cmr = continueMobRoute i >> schedule d cmr
+  onFirstSight $ schedule d cmr
+
+-- | Construct a room nesting object from a title, a description, some names, some attributes and the target room ID.
+ctorRoomNesting :: MonadVocab m => String -> String -> [String] -> [String] -> NodeId -> ObjectT m ()
+ctorRoomNesting t d ns as r = do
+  setObjectTitle t
+  setObjectDesc d
+  forM_ ns addObjectName
+  forM_ ns $ uncurry insertVocab . (,Noun)
+  forM_ as addObjectAttr
+  forM_ as $ uncurry insertVocab . (,Adj)
+  onEnter $ enterAndAnnounce r
+
+-- | Construct an acquirable object from a title, a description, some names and some attributes.
+ctorAcq :: MonadVocab m => String -> String -> [String] -> [String] -> ObjectT m ()
+ctorAcq t d ns as = do
+  setObjectTitle t
+  setObjectDesc d
+  forM_ ns addObjectName
+  forM_ as addObjectAttr
+  forM_ ns $ uncurry insertVocab . (,Noun)
+  forM_ as $ uncurry insertVocab . (,Adj)
+  onLook $ mprintLn d
+  setObjectIsAcquirable True
diff --git a/src/Game/Antisplice/Rooms.hs b/src/Game/Antisplice/Rooms.hs
new file mode 100644
--- /dev/null
+++ b/src/Game/Antisplice/Rooms.hs
@@ -0,0 +1,329 @@
+{-# LANGUAGE RankNTypes, FlexibleContexts #-}
+
+{-
+  This module is part of Antisplice.
+  Copyleft (c) 2014 Marvin Cohrs
+
+  All wrongs reversed. Sharing is an act of love, not crime.
+  Please share Antisplice with everyone you like.
+
+  Antisplice is free software: you can redistribute it and/or modify
+  it under the terms of the GNU Affero General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  Antisplice is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+  GNU Affero General Public License for more details.
+
+  You should have received a copy of the GNU Affero General Public License
+  along with Antisplice. If not, see <http://www.gnu.org/licenses/>.
+-}
+
+-- | A huge pile of utility functions for building our dungeon.
+module Game.Antisplice.Rooms where
+
+import Text.Chatty.Printer
+import Text.Chatty.Scanner
+import Text.Chatty.Expansion
+import System.Chatty.Misc
+import Game.Antisplice.Monad.Dungeon
+import Game.Antisplice.Monad
+import Game.Antisplice.Utils.Graph
+import Game.Antisplice.Utils.Counter
+import Game.Antisplice.Utils.AVL
+import Game.Antisplice.Errors
+import Control.Monad
+import Control.Monad.Error
+import Control.Monad.Trans.Class
+import Data.Text (pack)
+import Data.Maybe
+import Data.Time.Clock
+import Text.Printf
+
+-- | Modify the room state.
+modifyRoomState :: MonadRoom m => (RoomState -> RoomState) -> m ()
+modifyRoomState f = do
+  s <- getRoomState
+  putRoomState (f s)
+
+-- | Get the current room's description
+getRoomDesc :: (MonadRoom m,IsText t) => m t
+getRoomDesc = do
+  s <- getRoomState
+  return (fromText $ roomDescOf s)
+
+-- | Get the current room's title
+getRoomTitle :: (MonadRoom m,IsText t) => m t
+getRoomTitle = do
+  s <- getRoomState
+  return (fromText $ roomTitleOf s)
+
+-- | Set the current room's description
+setRoomDesc :: (MonadRoom m,IsText t) => t -> m ()
+setRoomDesc t = modifyRoomState $ \s -> s{roomDescOf=toText t}
+
+-- | Set the current room's title
+setRoomTitle :: (MonadRoom m,IsText t) => t -> m ()
+setRoomTitle t = modifyRoomState $ \s -> s{roomTitleOf=toText t}
+
+-- | Mark the current room as visited
+markRoom :: MonadDungeon m => m ()
+markRoom = do
+  s <- getDungeonState
+  case currentRoomOf s of
+    Just r -> putDungeonState s{roomsOf=markNode r $ roomsOf s}
+
+-- | Enter the given room and trigger most events, but don't announce it. Result tells whether this room is visited the first time.
+enterRoom :: NodeId -> ChattyDungeonM Bool
+enterRoom n = do
+  rs0 <- getRoomState
+  roomTriggerOnLeaveOf rs0
+  s <- getDungeonState
+  putDungeonState s{playerOf=fmap (\p -> p{playerRoomOf=n}) $ playerOf s}
+  let marked = nodeMarked $ getNode' n $ roomsOf s
+  rs <- getRoomState
+  unless marked $ do
+    markRoom
+    roomTriggerOnFirstEnterOf rs
+  roomTriggerOnEachEnterOf rs
+  sequence_ $ avlInorder $ flip fmap (roomObjectsOf rs) $ \os -> do
+    unless (objectOnceSeenOf os) $ objectTriggerOnFirstSightOf os
+    objectTriggerOnEachSightOf os
+  putRoomState rs{roomObjectsOf=fmap (\os -> os{objectOnceSeenOf=True}) $ roomObjectsOf rs}
+  return $ not marked
+
+-- | Reenter the current room and trigger all events (but don't announce it).
+reenterCurrentRoom :: ChattyDungeonM ()
+reenterCurrentRoom = do
+  s <- getDungeonState
+  case currentRoomOf s of
+    Just r -> void $ enterRoom r
+
+-- | Enter the given room, trigger all events and announce it. On the first visit, look around.
+enterAndAnnounce :: NodeId -> ChattyDungeonM ()
+enterAndAnnounce n = do
+  r <- enterRoom n
+  rs <- getRoomState
+  roomTriggerOnAnnounceOf rs
+  when r $ roomTriggerOnLookOf rs
+
+-- | Construct a new room using the room monad.
+constructRoom :: (Monad m,MonadDungeon (t m),MonadTrans t) => RoomT m a -> t m NodeId
+constructRoom m = do
+  (_,rs) <- lift $ runRoomT m $ RoomState (pack "") (pack "") EmptyAVL (return ()) (return ()) (return ()) (return ()) (return ())
+  s <- getDungeonState
+  let (nid,g) = addNode' rs $ roomsOf s
+      s' = if isNothing $ currentRoomOf s then s{roomsOf=g,playerOf=fmap (\p -> p{playerRoomOf=nid}) $ playerOf s} else s{roomsOf=g}
+  putDungeonState s'
+  return nid
+
+-- | Run a function in the context of the given room.
+withRoom :: MonadDungeon m => NodeId -> RoomT m a -> m a
+withRoom n m = do
+  s <- getDungeonState
+  let rs = getNode n $ roomsOf s
+  (a,rs') <- runRoomT m rs
+  putDungeonState s{roomsOf=setNode n rs' $ roomsOf s}
+  return a
+
+-- | Establish a path from one room to another one (one-way only).
+establishWay :: MonadDungeon m => NodeId -> NodeId -> Direction -> m ()
+establishWay f t d = do
+  s <- getDungeonState
+  let g = addEdge f t 0 d $ roomsOf s
+  putDungeonState s{roomsOf=g}
+
+-- | Enter a neighbouring room by its direction.
+changeRoom :: Direction -> ChattyDungeonM ()
+changeRoom d = do
+  s <- getDungeonState
+  case currentRoomOf s of
+    Just r -> case followEdge r d (roomsOf s) of
+                Just n -> enterAndAnnounce n
+                Nothing -> throwError CantWalkThereError
+
+-- | Add a new object to the current room. It is contructed using the object monad.
+addRoomObject :: (Monad m,MonadCounter (t m),MonadRoom (t m),MonadTrans t) => ObjectT m a -> t m ObjectId
+addRoomObject m = do
+  i <- countOn
+  (_,o) <- lift $ runObjectT m $ ObjectState
+       (ObjectId i) -- id
+       (pack "Something") -- title
+       (pack "I don't know what this is.") -- desc
+       [] [] False False False False -- names, attr, 1seen?, 1acq?, 1insp?, 1eq?
+       100 100 -- maxhp, curhp
+       EmptyAVL [] -- stats, route
+       EmptyAVL [] -- feat, impl
+       (return ()) -- on 1 sight
+       (return ()) -- on sight
+       (return ()) -- on 1 acq
+       (return ()) -- on acq
+       (return ()) -- on 1 insp
+       (return ()) -- on insp
+       (mprintLn "There is nothing special about this.") -- on look at
+       (mprintLn "There is nothing inside this.") -- on look in
+       (mprintLn "There is nothing written on this.") -- on read
+       (mprintLn "You cannot enter this.") -- on enter
+       (return ()) -- on enter room
+       (return ()) -- on leave room
+       (return ()) -- on announce
+       (return ()) -- on drop
+       (return ()) -- on 1 eq
+       (return ()) -- on eq
+       (return ()) -- on uneq
+  insertRoomObject o
+  return $ ObjectId i
+
+-- | Remove an object from the current room and return its state.
+removeRoomObject :: MonadRoom m => ObjectId -> m ObjectState
+removeRoomObject i = do
+  s <- getRoomState
+  let Just o = avlLookup i $ roomObjectsOf s
+  putRoomState s{roomObjectsOf=avlRemove i $ roomObjectsOf s}
+  return o
+
+-- | Insert an already constructed object to the current room.
+insertRoomObject :: MonadRoom m => ObjectState -> m ()
+insertRoomObject o = modifyRoomState $ \s -> s{roomObjectsOf=avlInsert o $ roomObjectsOf s}
+
+-- | Modify the object state
+modifyObjectState :: MonadObject m => (ObjectState -> ObjectState) -> m ()
+modifyObjectState f = do
+  s <- getObjectState
+  putObjectState $ f s
+
+-- | Get the object's title
+getObjectTitle :: (MonadObject m,IsText t) => m t
+getObjectTitle = do
+  s <- getObjectState
+  return (fromText $ objectTitleOf s)
+
+-- | Set the object's title
+setObjectTitle :: (MonadObject m,IsText t) => t -> m ()
+setObjectTitle t = modifyObjectState $ \s -> s{objectTitleOf=toText t}
+
+-- | Get the object's description
+getObjectDesc :: (MonadObject m,IsText t) => m t
+getObjectDesc = do
+  s <- getObjectState
+  return (fromText $ objectDescOf s)
+
+-- | Set the object's description
+setObjectDesc :: (MonadObject m,IsText t) => t -> m ()
+setObjectDesc t = modifyObjectState $ \s -> s{objectDescOf=toText t}
+
+-- | Get the object's description
+getObjectNames :: MonadObject m => m [String]
+getObjectNames = do
+  s <- getObjectState
+  return $ objectNamesOf s
+
+-- | Add a name for the current object
+addObjectName :: MonadObject m => String -> m ()
+addObjectName t = modifyObjectState $ \s -> s{objectNamesOf=t:objectNamesOf s}
+
+-- | Check if the given name matches our current object
+matchObjectName :: MonadObject m => String -> m Bool
+matchObjectName t = do
+  s <- getObjectState
+  return $ elem t $ objectNamesOf s
+
+-- | Add an attribute for the current object
+addObjectAttr :: MonadObject m => String -> m ()
+addObjectAttr t = modifyObjectState $ \s -> s{objectAttributesOf=t:objectAttributesOf s}
+
+-- | Create a new player using the player monad
+subscribePlayer :: (MonadDungeon (t m),MonadTrans t,Monad m) => PlayerT m a -> t m ()
+subscribePlayer m = do
+  s <- getDungeonState
+  (_,a) <- lift $ runPlayerT m $ PlayerState (rootNode $ roomsOf s) 100 100 EmptyAVL EmptyAVL EmptyAVL
+  putDungeonState s{playerOf=Just a}
+
+-- | Modify the player state
+modifyPlayerState :: MonadPlayer m => (PlayerState -> PlayerState) -> m ()
+modifyPlayerState f = do
+  s <- getPlayerState
+  putPlayerState $ f s
+
+-- | Move the current player to the given room, but don't trigger anything.
+setPlayerRoom :: MonadPlayer m => NodeId -> m ()
+setPlayerRoom r = modifyPlayerState $ \p -> p{playerRoomOf=r}
+
+-- | Check if the current object is a mob.
+getObjectIsMob :: (MonadObject m,Functor m) => m Bool
+getObjectIsMob = fmap (isJust . avlLookup Mobile . objectFeaturesOf) getObjectState
+
+-- | Set whether the current object is a mob.
+setObjectIsMob :: MonadObject m => Bool -> m ()
+setObjectIsMob b = modifyObjectState $ \o -> o{objectFeaturesOf=a b $ objectFeaturesOf o}
+  where a True = avlInsert (Mobile,())
+        a False = avlRemove Mobile
+
+-- | Check if the current object is acquirable.
+getObjectIsAcquirable :: (MonadObject m,Functor m) => m Bool
+getObjectIsAcquirable = fmap (isJust . avlLookup Acquirable . objectFeaturesOf) getObjectState
+
+-- | Set whether the current object is acquirable.
+setObjectIsAcquirable :: MonadObject m => Bool -> m ()
+setObjectIsAcquirable b = modifyObjectState $ \o -> o{objectFeaturesOf=a b $ objectFeaturesOf o}
+  where a True = avlInsert (Acquirable,())
+        a False = avlRemove Acquirable
+
+-- | Schedule an event for a given time offset (in milliseconds).
+schedule :: (MonadDungeon m,MonadClock m) => Integer -> Trigger -> m ()
+schedule ms t = do
+  now <- mgetstamp
+  let t' = now + (realToFrac ms / 1000)
+  s <- getDungeonState
+  putDungeonState s{timeTriggersOf=avlInsert (t',TriggerBox t) $ timeTriggersOf s}
+
+-- | Set the current mob's route
+setMobRoute :: MonadObject m => [NodeId] -> m ()
+setMobRoute rs = modifyObjectState $ \s -> s{objectRouteOf=rs}
+
+-- | The given object may continue its route
+continueMobRoute :: ObjectId -> Trigger
+continueMobRoute i = do
+  rs <- roomOfObject i
+  case rs of
+    [r] -> do
+      o <- withRoom r $ removeRoomObject i
+      guardVisible r $ objectTriggerOnRoomLeaveOf o
+      let (n:rs) = objectRouteOf o
+      withRoom n $ insertRoomObject o{objectRouteOf=rs++[n]}
+      guardVisible n $ objectTriggerOnRoomEnterOf o
+      return ()
+    [] -> throwError CantSeeOneError
+    _ -> throwError WhichOneError
+
+-- | Only run the given function if the player is inside the also given room.
+guardVisible :: MonadDungeon m => NodeId -> m () -> m ()
+guardVisible n m = do
+  s <- getDungeonState
+  when (currentRoomOf s == Just n) m
+
+-- | Determine which rooms contain the given object (won't be more than one, but we're careful)
+roomOfObject :: MonadDungeon m => ObjectId -> m [NodeId]
+roomOfObject o = (return . map nodeId . filter (isJust . avlLookup o . roomObjectsOf . nodeContent) . allNodes . roomsOf) =<< getDungeonState
+
+-- | Acquire the given object and put it in the player's inventory
+acquireObject :: ObjectId -> ChattyDungeonM ()
+acquireObject i = do
+  rs <- roomOfObject i
+  case rs of
+    [r] -> do
+      o <- withRoom r $ removeRoomObject i
+      modifyPlayerState $ \s -> s{playerInventoryOf=avlInsert o $ playerInventoryOf s}
+    [] -> throwError CantSeeOneError
+    _ -> throwError WhichOneError
+
+-- | Drop the given object and remove it from the player's inventory
+dropObject :: ObjectId -> ChattyDungeonM ()
+dropObject i = do
+  Just r <- (return . currentRoomOf) =<< getDungeonState
+  ps <- getPlayerState
+  let Just o = avlLookup i $ playerInventoryOf ps
+  putPlayerState ps{playerInventoryOf=avlRemove i $ playerInventoryOf ps}
+  insertRoomObject o
diff --git a/src/Game/Antisplice/Templates.hs b/src/Game/Antisplice/Templates.hs
new file mode 100644
--- /dev/null
+++ b/src/Game/Antisplice/Templates.hs
@@ -0,0 +1,113 @@
+{-# LANGUAGE TemplateHaskell, QuasiQuotes, FlexibleInstances, MultiParamTypeClasses, TypeSynonymInstances, FlexibleContexts, UndecidableInstances #-}
+
+{-
+  This module is part of Antisplice.
+  Copyleft (c) 2014 Marvin Cohrs
+
+  All wrongs reversed. Sharing is an act of love, not crime.
+  Please share Antisplice with everyone you like.
+
+  Antisplice is free software: you can redistribute it and/or modify
+  it under the terms of the GNU Affero General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  Antisplice is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+  GNU Affero General Public License for more details.
+
+  You should have received a copy of the GNU Affero General Public License
+  along with Antisplice. If not, see <http://www.gnu.org/licenses/>.
+-}
+
+-- | Provides (chatty-compatible) templates for automatical instance derivation.
+module Game.Antisplice.Templates where
+
+import Language.Haskell.TH
+import Text.Chatty.Templates
+import Game.Antisplice.Utils.Fail
+import Game.Antisplice.Utils.Run
+import Game.Antisplice.Utils.Counter
+import Game.Antisplice.Monad.Dungeon
+import Game.Antisplice.Monad.Vocab
+import Game.Antisplice.Utils.Atoms
+import Control.Monad.Error.Class
+import Control.Monad.Trans.Class
+import Control.Monad.State.Class
+import Control.Monad.IO.Class
+
+-- | Automatically derive an instance for 'MonadRoom'
+mkRoom s = [d|
+    instance MonadRoom m => MonadRoom ($sx m) where
+      getRoomState = lift getRoomState
+      putRoomState = lift . putRoomState
+  |]             
+  where sx = strToType s
+
+-- | Automatically derive an instance for 'MonadError e'
+mkFail e s = [d|
+    instance (MonadError $ex m,Run $sx) => MonadError $ex ($sx m) where
+      throwError = lift . throwError
+      catchError = error "catchError not implemented for this type."
+  |]
+  where sx = strToType s
+        ex = strToType e
+
+-- | Automatically derive an instance for 'MonadDungeon'
+mkDungeon s = [d|
+    instance MonadDungeon m => MonadDungeon ($sx m) where
+      getDungeonState = lift getDungeonState
+      putDungeonState = lift . putDungeonState
+  |]
+  where sx = strToType s
+
+-- | Automatically derive an instance for 'MonadCounter'
+mkCounter s = [d|
+    instance MonadCounter m => MonadCounter ($sx m) where
+      countOn = lift countOn
+  |]
+  where sx = strToType s
+
+-- | Automatically derive an instance for 'MonadObject'
+mkObject s = [d|
+    instance MonadObject m => MonadObject ($sx m) where
+      getObjectState = lift getObjectState
+      putObjectState = lift . putObjectState
+  |]
+  where sx = strToType s
+
+-- | Automatically derive an instance for 'MonadPlayer'
+mkPlayer s = [d|
+    instance MonadPlayer m => MonadPlayer ($sx m) where
+      getPlayerState = lift getPlayerState
+      putPlayerState = lift . putPlayerState
+  |]
+  where sx = strToType s
+
+-- | Automatically derive an instance for 'MonadIO'
+mkIO s = [d|
+    instance MonadIO m => MonadIO ($sx m) where
+      liftIO = lift . liftIO
+  |]
+  where sx = strToType s
+
+-- | Automatically derive an instance for 'MonadVocab'
+mkVocab s = [d|
+    instance MonadVocab m => MonadVocab ($sx m) where
+      lookupVocab = lift . lookupVocab
+      insertVocab k = lift . insertVocab k
+      vocabKnown = lift . vocabKnown
+  |]
+  where sx = strToType s
+
+-- | Automatically derive an instance for 'MonadAtoms'
+mkAtoms s = [d|
+    instance MonadAtoms m => MonadAtoms ($sx m) where
+      newAtom = lift newAtom
+      putAtom k = lift . putAtom k
+      getAtom = lift . getAtom
+      dispAtom = lift . dispAtom
+      cloneAtom = lift . cloneAtom
+  |]           
+  where sx = strToType s
diff --git a/src/Game/Antisplice/Terminal/Repl.hs b/src/Game/Antisplice/Terminal/Repl.hs
new file mode 100644
--- /dev/null
+++ b/src/Game/Antisplice/Terminal/Repl.hs
@@ -0,0 +1,86 @@
+{-# LANGUAGE FlexibleContexts, ImpredicativeTypes #-}
+
+{-
+  This module is part of Antisplice.
+  Copyleft (c) 2014 Marvin Cohrs
+
+  All wrongs reversed. Sharing is an act of love, not crime.
+  Please share Antisplice with everyone you like.
+
+  Antisplice is free software: you can redistribute it and/or modify
+  it under the terms of the GNU Affero General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  Antisplice is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+  GNU Affero General Public License for more details.
+
+  You should have received a copy of the GNU Affero General Public License
+  along with Antisplice. If not, see <http://www.gnu.org/licenses/>.
+-}
+
+-- | Provides a haskeline-based Read Eval Print Loop.
+module Game.Antisplice.Terminal.Repl where
+
+import Text.Chatty.Printer
+import Text.Chatty.Scanner
+import Text.Chatty.Interactor
+import Text.Chatty.Expansion
+import Text.Chatty.Extended.Printer
+import System.Chatty.Misc
+import Game.Antisplice.Monad.Dungeon
+import Game.Antisplice.Monad.Vocab
+import Game.Antisplice.Monad
+import Game.Antisplice.Errors
+import Game.Antisplice.Lang
+import Game.Antisplice.Utils.Fail
+import Game.Antisplice.Utils.Counter
+import Game.Antisplice.Utils.AVL
+import Game.Antisplice.Utils.Atoms
+import Control.Monad
+import Control.Concurrent
+import Control.Concurrent.MVar
+import Control.Monad.Error.Class
+import Control.Monad.IO.Class
+import Data.Time.Clock
+import System.Console.Haskeline
+import System.Console.Haskeline.History
+
+-- | Read Eval Print Loop for Antisplice.
+repl :: (ExtendedPrinter m,MonadScanner m,MonadError SplErr m,MonadIO m,MonadExpand m,ExpanderEnv m,MonadDungeon m,MonadAtoms m,MonadRoom m,MonadClock m,MonadVocab m) => m ()
+repl = do
+  mv <- liftIO (newEmptyMVar :: IO (MVar (Maybe String)))
+  cont <- liftIO (newEmptyMVar :: IO (MVar ()))
+  thr <- liftIO $ forkOS $ runInputT defaultSettings{autoAddHistory=True} $ forever $ do
+    liftIO $ takeMVar cont
+    rl <- getInputLine "> "
+    liftIO $ putMVar mv rl
+  liftIO $ putMVar cont ()
+  forever $ do
+    e <- runFailT $ forever $ do
+      ds <- getDungeonState
+      now <- mgetstamp
+      let ts = takeWhile ((<now).fst) $ avlInorder $ timeTriggersOf ds
+      putDungeonState ds{timeTriggersOf=foldr avlRemove (timeTriggersOf ds) $ map fst ts}
+      forM_ ts (runTrigger . snd)
+      r <- liftIO $ tryTakeMVar mv
+      case r of
+        Just (Just l) -> do
+          l' <- expand l
+          e <- runFailT (act l')
+          case e of
+            Right _ -> return ()
+            Left VerbMustFirstError -> mprintLn "Please start with a verb."
+            Left UnintellegibleError -> mprintLn "I don't understand that."
+            Left CantWalkThereError -> mprintLn "I can't walk there."
+            Left WhichOneError -> mprintLn "Which one do you mean?"
+            Left CantSeeOneError -> mprintLn "I can't see one here."
+            Left e -> throwError e
+          throwError DoneError
+        Just Nothing -> liftIO (killThread thr) >> mprintLn "quit" >> throwError QuitError
+        Nothing -> liftIO $ threadDelay 100
+    case e of
+      Left DoneError -> liftIO $ putMVar cont ()
+      Left e -> throwError e
diff --git a/src/Game/Antisplice/Utils/AVL.hs b/src/Game/Antisplice/Utils/AVL.hs
new file mode 100644
--- /dev/null
+++ b/src/Game/Antisplice/Utils/AVL.hs
@@ -0,0 +1,159 @@
+{-# LANGUAGE MultiParamTypeClasses, FlexibleInstances #-}
+
+{-
+  This module is part of Antisplice.
+  Copyleft (c) 2014 Marvin Cohrs
+
+  All wrongs reversed. Sharing is an act of love, not crime.
+  Please share Antisplice with everyone you like.
+
+  Antisplice is free software: you can redistribute it and/or modify
+  it under the terms of the GNU Affero General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  Antisplice is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+  GNU Affero General Public License for more details.
+
+  You should have received a copy of the GNU Affero General Public License
+  along with Antisplice. If not, see <http://www.gnu.org/licenses/>.
+-}
+
+-- | Provides an AVL tree.
+module Game.Antisplice.Utils.AVL (avlMax,avlMin,avlLookup,avlHeight,avlSize,avlInsert,avlRemove,AVL (EmptyAVL,AVL),avlRoot,avlPreorder,avlPostorder,avlInorder) where
+
+import Game.Antisplice.Utils.BST
+
+instance Indexable i o v => AnyBST AVL i o v where
+  anyBstMax = avlMax
+  anyBstMin = avlMin
+  anyBstLookup = avlLookup
+  anyBstEmpty = EmptyAVL
+  anyBstInsert = avlInsert
+  anyBstRemove = avlRemove
+
+-- | An AVL tree.
+data AVL a = EmptyAVL | AVL a Int Int !(AVL a) !(AVL a)
+
+-- | Get the greatest element.
+avlMax :: AVL i -> Maybe i
+avlMax EmptyAVL = Nothing
+avlMax (AVL a _ _ _ EmptyAVL) = Just a
+avlMax (AVL _ _ _ _ r) = avlMax r
+
+-- | Get the least element.
+avlMin :: AVL i -> Maybe i
+avlMin EmptyAVL = Nothing
+avlMin (AVL a _ _ EmptyAVL _) = Just a
+avlMin (AVL _ _ _ l _) = avlMin l
+
+-- | Lookup a given key.
+avlLookup :: Indexable i o v => o -> AVL i -> Maybe v
+avlLookup _ EmptyAVL = Nothing
+avlLookup o (AVL a _ _ l r)
+  | o == indexOf a = Just $ valueOf a
+  | o < indexOf a = avlLookup o l
+  | o > indexOf a = avlLookup o r
+
+-- | Get the height of the tree.
+avlHeight :: AVL i -> Int
+avlHeight EmptyAVL = 0
+avlHeight (AVL _ _ h _ _) = h
+
+-- | Get the size of the tree.
+avlSize :: AVL i -> Int
+avlSize EmptyAVL = 0
+avlSize (AVL _ s _ _ _) = s
+
+avlBalance :: AVL i -> AVL i
+avlBalance EmptyAVL = EmptyAVL
+avlBalance t@(AVL a _ _ l r)
+  | abs (avlHeight l - avlHeight r) < 2 = t
+  | avlHeight l < avlHeight r = case r of
+    AVL a1 _ _ l1 r1 ->
+      let child = AVL a (findSize l l1) (findHeight l l1) l l1
+      in AVL a1 (findSize child r1) (findHeight child r1) child r1
+  | otherwise = case l of
+    AVL a1 _ _ l1 r1 ->
+      let child = AVL a (findSize r1 r) (findHeight r1 r) r1 r
+      in AVL a1 (findSize l1 child) (findHeight l1 child) l1 child
+
+findSize :: AVL i -> AVL i -> Int
+findSize a b = 1 + avlSize a + avlSize b
+
+findHeight :: AVL i -> AVL i -> Int
+findHeight a b = 1 + max (avlHeight a) (avlHeight b)
+
+-- | Insert into the tree.
+avlInsert :: Indexable i o v => i -> AVL i -> AVL i
+avlInsert a EmptyAVL = AVL a 1 1 EmptyAVL EmptyAVL
+avlInsert a (AVL a1 s h l r)
+  | indexOf a == indexOf a1 = AVL a s h l r
+  | indexOf a < indexOf a1 =
+    let l' = avlInsert a l
+    in avlBalance $ AVL a1 (s+1) (findHeight l' r) l' r
+  | otherwise =
+    let r' = avlInsert a r
+    in avlBalance $ AVL a1 (s+1) (findHeight l r') l r' 
+
+-- | Remove from the tree.
+avlRemove :: Indexable i o v => o -> AVL i -> AVL i
+avlRemove _ EmptyAVL = EmptyAVL
+avlRemove o t@(AVL a _ _ EmptyAVL EmptyAVL)
+  | indexOf a == o = EmptyAVL
+  | otherwise = t
+avlRemove o t@(AVL a _ _ l r)
+  | indexOf a == o =
+    case t of
+      AVL _ _ _ EmptyAVL _ -> case getLeft r of
+        (Just a',r') -> avlBalance $ AVL a' (findSize EmptyAVL r') (findHeight EmptyAVL r') EmptyAVL r'
+      _ -> case getRight l of
+        (Just a',l') -> avlBalance $ AVL a' (findSize l' r) (findHeight l' r) l' r
+  | o < indexOf a =
+    let l' = avlRemove o l
+    in avlBalance $ AVL a (findSize l' r) (findHeight l' r) l' r
+  | otherwise =
+    let r' = avlRemove o r
+    in avlBalance $ AVL a (findSize l r') (findHeight l r') l r'
+
+getLeft :: AVL i -> (Maybe i,AVL i)
+getLeft EmptyAVL = (Nothing,EmptyAVL)
+getLeft (AVL a _ _ EmptyAVL EmptyAVL) = (Just a,EmptyAVL)
+getLeft (AVL a _ _ EmptyAVL r) = (Just a,r)
+getLeft (AVL a _ _ l r) =
+  case getLeft l of
+    (p, t2) -> (p, AVL a (findSize r t2) (findHeight r t2) t2 r)
+
+getRight :: AVL i -> (Maybe i,AVL i)
+getRight EmptyAVL = (Nothing,EmptyAVL)
+getRight (AVL a _ _ EmptyAVL EmptyAVL) = (Just a,EmptyAVL)
+getRight (AVL a _ _ l EmptyAVL) = (Just a,l)
+getRight (AVL a _ _ l r) =
+  case getRight r of
+    (p, t2) -> (p, AVL a (findSize l t2) (findHeight l t2) l t2)
+
+instance Functor AVL where
+  fmap _ EmptyAVL = EmptyAVL
+  fmap f (AVL a s h l r) = AVL (f a) s h (fmap f l) (fmap f r)
+
+-- | Get the root of the tree.
+avlRoot :: AVL i -> i
+avlRoot EmptyAVL = error "Trying to get the root of an empty AVL tree."
+avlRoot (AVL a _ _ _ _) = a
+
+-- | Traverse the tree, order (head, left, right)
+avlPreorder :: AVL i -> [i]
+avlPreorder EmptyAVL = []
+avlPreorder (AVL a _ _ l r) = a : avlPreorder l ++ avlPreorder r
+
+-- | Traverse the tree, order (left, right, head)
+avlPostorder :: AVL i -> [i]
+avlPostorder EmptyAVL = []
+avlPostorder (AVL a _ _ l r) = avlPostorder l ++ avlPostorder r ++ [a]
+
+-- | Traverse the tree, order (left, head, right)
+avlInorder :: AVL i -> [i]
+avlInorder EmptyAVL = []
+avlInorder (AVL a _ _ l r) = avlInorder l ++ [a] ++ avlInorder r
diff --git a/src/Game/Antisplice/Utils/Atoms.hs b/src/Game/Antisplice/Utils/Atoms.hs
new file mode 100644
--- /dev/null
+++ b/src/Game/Antisplice/Utils/Atoms.hs
@@ -0,0 +1,104 @@
+{-
+  This module is part of Antisplice.
+  Copyleft (c) 2014 Marvin Cohrs
+
+  All wrongs reversed. Sharing is an act of love, not crime.
+  Please share Antisplice with everyone you like.
+
+  Antisplice is free software: you can redistribute it and/or modify
+  it under the terms of the GNU Affero General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  Antisplice is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+  GNU Affero General Public License for more details.
+
+  You should have received a copy of the GNU Affero General Public License
+  along with Antisplice. If not, see <http://www.gnu.org/licenses/>.
+-}
+
+-- | Provides a variable-storing monad and functions for access (they almost form an arrow)
+module Game.Antisplice.Utils.Atoms where
+
+import Control.Arrow
+import qualified Control.Category as C
+import Control.Monad
+import Control.Monad.Trans.Class
+import Control.Monad.IO.Class
+import Data.Dynamic
+import Data.Typeable
+import Game.Antisplice.Utils.AVL
+import Game.Antisplice.Utils.Counter
+
+-- | Phantom type for atom IDs
+newtype Atom a = Atom Int deriving (Ord,Eq)
+
+-- | The storage monad
+newtype AtomStoreT m a = AtomStore { runAtomStoreT :: AVL (Int,Dynamic) -> m (a,AVL (Int,Dynamic)) }
+
+instance Functor m => Functor (AtomStoreT m) where
+  fmap f a = AtomStore $ \s -> fmap (first f) $ runAtomStoreT a s
+
+instance Monad m => Monad (AtomStoreT m) where
+  return a = AtomStore $ \s -> return (a,s)
+  m >>= f = AtomStore $ \s -> do (a,s') <- runAtomStoreT m s; runAtomStoreT (f a) s'
+
+instance MonadTrans AtomStoreT where
+  lift m = AtomStore $ \s -> do a <- m; return (a,s)
+
+instance MonadIO m => MonadIO (AtomStoreT m) where
+  liftIO = lift . liftIO
+
+instance MonadCounter m => MonadCounter (AtomStoreT m) where
+  countOn = lift countOn
+
+-- | Typeclass for all atom-storing monads.
+class MonadCounter m => MonadAtoms m where
+  -- | Reserve a new atom.
+  newAtom :: Typeable v => m (Atom v)
+  -- | Save a value for the given atom.
+  putAtom :: Typeable v => Atom v -> v -> m ()
+  -- | Get the value from a given atom.
+  getAtom :: Typeable v => Atom v -> m v
+  -- | Dispose the given atom.
+  dispAtom :: Atom v -> m ()
+  -- | Clone the given atom.
+  cloneAtom :: Typeable v => Atom v -> m (Atom v)
+  cloneAtom a = do
+    b <- newAtom
+    v <- getAtom a
+    putAtom b v
+    return b
+
+instance (Functor m,MonadCounter m) => MonadAtoms (AtomStoreT m) where
+  newAtom = fmap Atom $ lift countOn
+  putAtom (Atom a) v = AtomStore $ \s -> return ((),avlInsert (a,toDyn v) s)
+  getAtom (Atom a) = AtomStore $ \s -> let Just v = avlLookup a s in return (fromDyn v undefined,s)
+  dispAtom (Atom a) = AtomStore $ \s -> return ((),avlRemove a s)
+
+-- | Atomar operation (almost arrow)
+newtype (Typeable a,Typeable b) => Atomar m a b = Atomar { runAtomar :: Atom a -> m (Atom b) }
+
+{-instance MonadAtoms m => C.Category (Atomar m) where
+  id = Atomar return
+  a . b = Atomar (runAtomar a <=< runAtomar b)
+
+instance MonadAtoms m => Arrow (Atomar m) where
+  arr = Atomar . mapAtom
+  first f = Atomar $ \a -> do
+    b <- cloneAtom a
+    b' <- mapAtom fst b
+    c <- runAtomar f b'
+    v <- getAtom c
+    mapAtom (first $ const v) a
+    dispAtom c-}
+
+-- | Run a pure function on atoms.
+mapAtom :: (Typeable a, Typeable b, MonadAtoms m) => (a -> b) -> Atom a -> m (Atom b)
+mapAtom f (Atom a) = do
+  v <- getAtom (Atom a)
+  putAtom (Atom a) $ f v
+  return (Atom a)
+
diff --git a/src/Game/Antisplice/Utils/BST.hs b/src/Game/Antisplice/Utils/BST.hs
new file mode 100644
--- /dev/null
+++ b/src/Game/Antisplice/Utils/BST.hs
@@ -0,0 +1,110 @@
+{-# LANGUAGE MultiParamTypeClasses, FlexibleInstances, FunctionalDependencies, TypeFamilies #-}
+
+{-
+  This module is part of Antisplice.
+  Copyleft (c) 2014 Marvin Cohrs
+
+  All wrongs reversed. Sharing is an act of love, not crime.
+  Please share Antisplice with everyone you like.
+
+  Antisplice is free software: you can redistribute it and/or modify
+  it under the terms of the GNU Affero General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  Antisplice is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+  GNU Affero General Public License for more details.
+
+  You should have received a copy of the GNU Affero General Public License
+  along with Antisplice. If not, see <http://www.gnu.org/licenses/>.
+-}
+
+-- | Provides a typeclass for all binary search trees and an unbalanced implementation
+module Game.Antisplice.Utils.BST where
+
+-- | Only instances of Indexable may be saved in a BST
+class Ord o => Indexable i o v | i -> o, i -> v where
+  type IndexOf i
+  type ValueOf i
+  -- | Extract the index
+  indexOf :: i -> o
+  -- | Extract the value
+  valueOf :: i -> v
+
+instance Indexable Int Int Int where
+  type IndexOf Int = Int
+  type ValueOf Int = Int
+  indexOf = id
+  valueOf = id
+
+instance Ord o => Indexable (o,a) o a where
+  type IndexOf (o,a) = o
+  type ValueOf (o,a) = a
+  indexOf = fst
+  valueOf = snd
+
+-- | Typeclass for all BSTs that store the given Indexable
+class Indexable i o v => AnyBST t i o v where
+  -- | Insert into the tree
+  anyBstInsert :: i -> t i -> t i
+  -- | Remove from the tree
+  anyBstRemove :: o -> t i -> t i
+  -- | Get the greatest element
+  anyBstMax :: t i -> Maybe i
+  -- | Get the least element
+  anyBstMin :: t i -> Maybe i
+  -- | Lookup a given key
+  anyBstLookup :: o -> t i -> Maybe v
+  -- | An empty tree
+  anyBstEmpty :: t i
+
+instance Indexable i o v => AnyBST BST i o v where
+  anyBstInsert = bstInsert
+  anyBstRemove = bstRemove
+  anyBstMax = bstMax
+  anyBstMin =  bstMin
+  anyBstLookup = bstLookup
+  anyBstEmpty = EmptyBST
+
+-- | An unbalanced binary search tree
+data BST a = EmptyBST | BST a !(BST a) !(BST a)
+
+-- | Insert into the BST
+bstInsert :: Indexable i o v => i -> BST i -> BST i
+bstInsert i EmptyBST = BST i EmptyBST EmptyBST
+bstInsert i (BST a l r)
+  | indexOf i < indexOf a = BST a (bstInsert i l) r
+  | indexOf i > indexOf a = BST a l (bstInsert i r)
+  | otherwise = BST i l r
+
+-- | Remove from the BST
+bstRemove :: Indexable i o v => o -> BST i -> BST i
+bstRemove o EmptyBST = EmptyBST
+bstRemove o (BST a EmptyBST r) | indexOf a == o = r
+bstRemove o (BST a l EmptyBST) | indexOf a == o = l
+bstRemove o (BST a l r)
+  | indexOf a < o = BST a (bstRemove o l) r
+  | indexOf a > o = BST a l (bstRemove o r)
+  | otherwise = let (Just m) = bstMax l in BST m (bstRemove (indexOf m) l) r
+
+-- | Get the greatest element
+bstMax :: BST i -> Maybe i
+bstMax EmptyBST = Nothing
+bstMax (BST a _ EmptyBST) = Just a
+bstMax (BST _ _ r) = bstMax r
+
+-- | Get the least element
+bstMin :: BST i -> Maybe i
+bstMin EmptyBST = Nothing
+bstMin (BST a EmptyBST _) = Just a
+bstMin (BST _ l _) = bstMin l
+
+-- | Lookup a given key
+bstLookup :: Indexable i o v => o -> BST i -> Maybe v
+bstLookup _ EmptyBST = Nothing
+bstLookup o (BST a l r)
+  | o == indexOf a = Just $ valueOf a
+  | o < indexOf a = bstLookup o l
+  | o > indexOf a = bstLookup o r
diff --git a/src/Game/Antisplice/Utils/Counter.hs b/src/Game/Antisplice/Utils/Counter.hs
new file mode 100644
--- /dev/null
+++ b/src/Game/Antisplice/Utils/Counter.hs
@@ -0,0 +1,52 @@
+{-
+  This module is part of Antisplice.
+  Copyleft (c) 2014 Marvin Cohrs
+
+  All wrongs reversed. Sharing is an act of love, not crime.
+  Please share Antisplice with everyone you like.
+
+  Antisplice is free software: you can redistribute it and/or modify
+  it under the terms of the GNU Affero General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  Antisplice is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+  GNU Affero General Public License for more details.
+
+  You should have received a copy of the GNU Affero General Public License
+  along with Antisplice. If not, see <http://www.gnu.org/licenses/>.
+-}
+
+-- | Provides a counter monad.
+module Game.Antisplice.Utils.Counter where
+
+import Control.Arrow
+import Control.Monad
+import Control.Monad.Trans.Class
+
+-- | A counter monad.
+newtype CounterT m a = Counter { runCounterT :: Int -> m (a,Int) }
+
+instance Functor m => Functor (CounterT m) where
+  fmap f a = Counter $ \s -> fmap (first f) $ runCounterT a s
+
+instance Monad m => Monad (CounterT m) where
+  return a = Counter $ \s -> return (a,s)
+  m >>= f = Counter $ \s -> do (a,s') <- runCounterT m s; runCounterT (f a) s'
+
+instance MonadTrans CounterT where
+  lift m = Counter $ \s -> do a <- m; return (a,s)
+
+-- | Typeclass for all counter monads.
+class Monad m => MonadCounter m where
+  -- | Tell the current number and increment it
+  countOn :: m Int
+
+instance Monad m => MonadCounter (CounterT m) where
+  countOn = Counter $ \s -> return (s,s+1)
+
+-- | Run the given function inside a counter
+withCounter :: (Monad m,Functor m) => CounterT m a -> m a
+withCounter m = fmap fst $ runCounterT m 0
diff --git a/src/Game/Antisplice/Utils/Fail.hs b/src/Game/Antisplice/Utils/Fail.hs
new file mode 100644
--- /dev/null
+++ b/src/Game/Antisplice/Utils/Fail.hs
@@ -0,0 +1,60 @@
+{-# LANGUAGE FlexibleInstances, MultiParamTypeClasses #-}
+
+{-
+  This module is part of Antisplice.
+  Copyleft (c) 2014 Marvin Cohrs
+
+  All wrongs reversed. Sharing is an act of love, not crime.
+  Please share Antisplice with everyone you like.
+
+  Antisplice is free software: you can redistribute it and/or modify
+  it under the terms of the GNU Affero General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  Antisplice is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+  GNU Affero General Public License for more details.
+
+  You should have received a copy of the GNU Affero General Public License
+  along with Antisplice. If not, see <http://www.gnu.org/licenses/>.
+-}
+
+-- | Provides a monad for error handling. Okay, I confess it's equal to ErrorT...
+module Game.Antisplice.Utils.Fail where
+
+import Control.Monad
+import Control.Monad.Error.Class
+import Control.Monad.Trans.Class
+
+-- | The error handling monad.
+newtype FailT e m a = Fail { runFailT :: m (Either e a) }
+
+instance Monad m => Functor (FailT e m) where
+  fmap f a = Fail $ do
+     v <- runFailT a
+     case v of
+       Left e -> return $ Left e
+       Right x -> return $ Right (f x)
+
+instance Monad m => Monad (FailT e m) where
+  return a = Fail $ return $ Right a
+  m >>= f = Fail $ do
+    v <- runFailT m
+    case v of
+      Left e -> return $ Left e
+      Right x -> runFailT $ f x
+
+instance MonadTrans (FailT e) where
+  lift m = Fail $ do
+    a <- m
+    return $ Right a
+
+instance Monad m => MonadError e (FailT e m) where
+  throwError e = Fail $ return $ Left e
+  catchError m h = Fail $ do
+    v <- runFailT m
+    case v of
+      Left e -> runFailT $ h e
+      Right x -> return v
diff --git a/src/Game/Antisplice/Utils/Graph.hs b/src/Game/Antisplice/Utils/Graph.hs
new file mode 100644
--- /dev/null
+++ b/src/Game/Antisplice/Utils/Graph.hs
@@ -0,0 +1,142 @@
+{-# LANGUAGE MultiParamTypeClasses, TypeFamilies #-}
+
+{-
+  This module is part of Antisplice.
+  Copyleft (c) 2014 Marvin Cohrs
+
+  All wrongs reversed. Sharing is an act of love, not crime.
+  Please share Antisplice with everyone you like.
+
+  Antisplice is free software: you can redistribute it and/or modify
+  it under the terms of the GNU Affero General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  Antisplice is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+  GNU Affero General Public License for more details.
+
+  You should have received a copy of the GNU Affero General Public License
+  along with Antisplice. If not, see <http://www.gnu.org/licenses/>.
+-}
+
+-- | Provides a general graph.
+module Game.Antisplice.Utils.Graph where
+
+import Game.Antisplice.Utils.BST
+import Game.Antisplice.Utils.AVL
+
+-- | Phantom type for a node ID
+newtype NodeId = NodeId Int deriving (Eq,Show,Ord)
+
+-- | A general graph
+data Graph a b = Graph { nodes :: AVL (Node a), edges :: [Edge b], nextId :: NodeId }
+
+-- | A node for the graph
+data Node a = Node { nodeMarked :: Bool, nodeContent :: a, nodeId :: NodeId }
+
+-- | An edge for the graph
+data Edge b = Edge { fromNode :: NodeId, toNode :: NodeId, weight :: Int, label :: b }
+
+instance Indexable (Node a) NodeId (Node a) where
+  type IndexOf (Node a) = NodeId
+  type ValueOf (Node a) = Node a  
+  indexOf = nodeId
+  valueOf = id
+
+--instance (Show a,Show b) => Show (Graph a b) where
+--  show (Graph ns es _) = unlines (map show (reverse ns) ++ map show es)
+  
+instance (Show a) => Show (Node a) where
+  show (Node _ c i) = concat [show i, ": ", show c]
+
+instance (Show b) => Show (Edge b) where
+  show (Edge f t w l) = concat [show f, " --", show l, "-> ", show t, " [", show w, "]"]
+
+-- | Increment a NodeId
+incId :: NodeId -> NodeId
+incId (NodeId i) = NodeId (i+1)
+
+-- | An empty graph
+emptyGraph :: Graph a b
+emptyGraph = Graph EmptyAVL [] (NodeId 0)
+
+-- | Add a node to the graph
+addNode :: a -> Graph a b -> Graph a b
+addNode x = snd . addNode' x
+
+-- | Add a node to the graph and also return its ID
+addNode' :: a -> Graph a b -> (NodeId,Graph a b)
+addNode' x (Graph ns es nid) = (nid, Graph (avlInsert (Node False x nid) ns) es (incId nid))
+
+-- | Add a bunch of nodes
+addNodes :: [a] -> Graph a b -> Graph a b
+addNodes xs = snd . addNodes' xs
+
+-- | Add a bunch of nodes and also return their IDs
+addNodes' :: [a] -> Graph a b -> ([NodeId],Graph a b)
+addNodes' [] g = ([],g)
+addNodes' (p:ps) g = let (ls, g'') = addNodes' ps g'
+                         (l, g') = addNode' p g
+                     in (l:ls, g'')
+
+-- | Return all nodes
+allNodes :: Graph a b -> [Node a]
+allNodes = avlInorder . nodes
+
+-- | Return the node in the AVL tree's root
+rootNode :: Graph a b -> NodeId
+rootNode = nodeId . avlRoot . nodes
+
+-- | Add a unidirectional edge to the graph (provide both nodes, a weight and a label)
+addEdge :: NodeId -> NodeId -> Int -> b -> Graph a b -> Graph a b
+addEdge f t w l = addEdge' (Edge f t w l)
+
+-- | Add a unidirectional edge to the graph (provide the 'Edge')
+addEdge' :: Edge b -> Graph a b -> Graph a b
+addEdge' e g = g{edges=e:edges g}
+
+-- | Add a bidirectional edge to the graph (provide both nodes, a weight and a label)
+addMutualEdge :: NodeId -> NodeId -> Int -> b -> Graph a b -> Graph a b
+addMutualEdge f t w l = addEdge f t w l . addEdge t f w l
+
+-- | Add a bunch of edges unidirectionally (provide both nodes, a weight and a label)
+addEdges :: [(NodeId,NodeId,Int,b)] -> Graph a b -> Graph a b
+addEdges es g = foldr (addEdge' . (\(f,t,w,l) -> Edge f t w l)) g es
+
+-- | Add a bunch of edges unidirectionally (provide the 'Edge's)
+addEdges' :: [Edge b] -> Graph a b -> Graph a b
+addEdges' = flip $ foldr addEdge'
+
+-- | Add a bunch of edges bidirectionally (provide both nodes, a weight and a label)
+addMutualEdges :: [(NodeId,NodeId,Int,b)] -> Graph a b -> Graph a b
+addMutualEdges es = addEdges es . addEdges (map (\(f,t,w,l) -> (t,f,w,l)) es)
+
+-- | Get the node's content from its ID
+getNode :: NodeId -> Graph a b -> a
+getNode n = nodeContent . getNode' n
+
+-- | Get the 'Node' object from its ID
+getNode' :: NodeId -> Graph a b -> Node a
+getNode' n = (\(Just x) -> x) . avlLookup n . nodes
+
+-- | Set the node's content by its ID
+setNode :: NodeId -> a -> Graph a b -> Graph a b
+setNode n a g@(Graph ns _ _) = g{nodes=fmap setNode' ns}
+  where setNode' (Node m c i) = if i == n then Node m a i else Node m c i
+
+-- | Mark a node by its ID
+markNode :: NodeId -> Graph a b -> Graph a b
+markNode n g@(Graph ns _ _) = g{nodes=fmap markNode' ns}
+  where markNode' (Node m c i) = if i == n then Node True c i else Node m c i 
+
+-- | Follow an edge by its source node and label
+followEdge :: Eq b => NodeId -> b -> Graph a b -> Maybe NodeId
+followEdge n l g = case filter ((==l).label) $ filter ((==n).fromNode) $ edges g of
+  [] -> Nothing
+  (x:_) -> Just (toNode x)
+
+-- | List all edges from the given node
+listEdges :: NodeId -> Graph a b -> [(b,NodeId)]
+listEdges n g = fmap (\(Edge _ t _ l) -> (l,t)) $ filter ((==n).fromNode) $ edges g
diff --git a/src/Game/Antisplice/Utils/Run.hs b/src/Game/Antisplice/Utils/Run.hs
new file mode 100644
--- /dev/null
+++ b/src/Game/Antisplice/Utils/Run.hs
@@ -0,0 +1,47 @@
+{-# LANGUAGE TypeFamilies #-}
+
+{-
+  This module is part of Antisplice.
+  Copyleft (c) 2014 Marvin Cohrs
+
+  All wrongs reversed. Sharing is an act of love, not crime.
+  Please share Antisplice with everyone you like.
+
+  Antisplice is free software: you can redistribute it and/or modify
+  it under the terms of the GNU Affero General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  Antisplice is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+  GNU Affero General Public License for more details.
+
+  You should have received a copy of the GNU Affero General Public License
+  along with Antisplice. If not, see <http://www.gnu.org/licenses/>.
+-}
+
+-- | Provides a generalized way of running newtypes.
+module Game.Antisplice.Utils.Run where
+
+import Control.Monad
+import Control.Monad.Trans.Class
+import Game.Antisplice.Utils.Fail
+import Game.Antisplice.Monad.Dungeon
+
+-- | Typeclass for all runnable newtype 'MonadTrans'ers
+class MonadTrans t => Run t where
+  type Baretype t m a
+  run :: Monad m => t m a -> Baretype t m a
+
+instance Run (FailT e) where
+  type Baretype (FailT e) m a = m (Either e a)
+  run = runFailT
+
+instance Run DungeonT where
+  type Baretype DungeonT m a = DungeonState -> m (a,DungeonState)
+  run = runDungeonT
+
+instance Run RoomT where
+  type Baretype RoomT m a = RoomState -> m (a,RoomState)
+  run = runRoomT
diff --git a/src/Game/Antisplice/Utils/TST.hs b/src/Game/Antisplice/Utils/TST.hs
new file mode 100644
--- /dev/null
+++ b/src/Game/Antisplice/Utils/TST.hs
@@ -0,0 +1,51 @@
+{-
+  This module is part of Antisplice.
+  Copyleft (c) 2014 Marvin Cohrs
+
+  All wrongs reversed. Sharing is an act of love, not crime.
+  Please share Antisplice with everyone you like.
+
+  Antisplice is free software: you can redistribute it and/or modify
+  it under the terms of the GNU Affero General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  Antisplice is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+  GNU Affero General Public License for more details.
+
+  You should have received a copy of the GNU Affero General Public License
+  along with Antisplice. If not, see <http://www.gnu.org/licenses/>.
+-}
+
+-- | Provides a ternary search trie
+module Game.Antisplice.Utils.TST where
+
+import Data.Maybe
+
+-- | A ternary search trie
+data TST a = EmptyTST | TST Char (Maybe a) (TST a) (TST a) (TST a)
+
+-- | Insert something into the TST
+tstInsert :: String -> a -> TST a -> TST a
+tstInsert (c:[]) a EmptyTST = TST c (Just a) EmptyTST EmptyTST EmptyTST
+tstInsert (c:cs) a EmptyTST = TST c Nothing (tstInsert cs a EmptyTST) EmptyTST EmptyTST
+tstInsert cs a (TST c1 a1 f l r)
+  | head cs < c1 = TST c1 a1 f (tstInsert cs a l) r
+  | head cs > c1 = TST c1 a1 f l (tstInsert cs a r)
+  | cs == [c1] = TST c1 (Just a) f l r
+  | otherwise = TST c1 a1 (tstInsert (tail cs) a f) l r
+
+-- | Lookup some string in the TST
+tstLookup :: String -> TST a -> Maybe a
+tstLookup _ EmptyTST = Nothing
+tstLookup cs (TST c1 a1 f l r)
+  | head cs < c1 = tstLookup cs l
+  | head cs > c1 = tstLookup cs r
+  | cs == [c1] = a1
+  | otherwise = tstLookup (tail cs) f
+
+-- | Check if the TST contains the given key
+tstContains :: String -> TST a -> Bool
+tstContains cs = isJust . tstLookup cs
