diff --git a/.gitignore b/.gitignore
index 5e33ec1..8edcdd2 100644
--- a/.gitignore
+++ b/.gitignore
@@ -6,4 +6,8 @@ gameshell.geany
 gameexpr.py
 game.py
 solution.txt
+bin
+lib
+lib64
+pyvenv.cfg
 
diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 0000000..86cdd6a
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,19 @@
+[project]
+name = "gameshell"
+version = "0.0.2"
+authors = [
+  { name="Patrick Marsee", email="me@cheesewatergames.net" },
+]
+description = "A game engine for text adventures."
+readme = "README.md"
+license = { file="LICENSE" }
+requires-python = ">=3.10"
+classifiers = [
+    "Programming Language :: Python :: 3",
+    "License :: OSI Approved :: GNU General Public License v3.0",
+    "Operating System :: OS Independent",
+]
+dependencies = [
+    "ruamel.yaml"
+]
+
diff --git a/src/gameshell.egg-info/PKG-INFO b/src/gameshell.egg-info/PKG-INFO
new file mode 100644
index 0000000..ff9a2f4
--- /dev/null
+++ b/src/gameshell.egg-info/PKG-INFO
@@ -0,0 +1,10 @@
+Metadata-Version: 2.1
+Name: gameshell
+Version: 0.0.2
+Summary: A game engine for text adventures.
+Author-email: Patrick Marsee <me@cheesewatergames.net>
+Classifier: Programming Language :: Python :: 3
+Classifier: License :: OSI Approved :: GNU General Public License v3.0
+Classifier: Operating System :: OS Independent
+Requires-Python: >=3.10
+Description-Content-Type: text/markdown
diff --git a/src/gameshell.egg-info/SOURCES.txt b/src/gameshell.egg-info/SOURCES.txt
new file mode 100644
index 0000000..8237e4a
--- /dev/null
+++ b/src/gameshell.egg-info/SOURCES.txt
@@ -0,0 +1,21 @@
+pyproject.toml
+src/gameshell/__init__.py
+src/gameshell/__main__.py
+src/gameshell/gamebase.py
+src/gameshell/gameevents.py
+src/gameshell/gameexpr.py
+src/gameshell/gamegui.py
+src/gameshell/gamelocus.py
+src/gameshell/gamemap.py
+src/gameshell/gamesequence.py
+src/gameshell/gamethings.py
+src/gameshell/gameutil.py
+src/gameshell/locusdemo.py
+src/gameshell/main.py
+src/gameshell/shell.py
+src/gameshell/tile.py
+src/gameshell.egg-info/PKG-INFO
+src/gameshell.egg-info/SOURCES.txt
+src/gameshell.egg-info/dependency_links.txt
+src/gameshell.egg-info/requires.txt
+src/gameshell.egg-info/top_level.txt
\ No newline at end of file
diff --git a/src/gameshell.egg-info/dependency_links.txt b/src/gameshell.egg-info/dependency_links.txt
new file mode 100644
index 0000000..8b13789
--- /dev/null
+++ b/src/gameshell.egg-info/dependency_links.txt
@@ -0,0 +1 @@
+
diff --git a/src/gameshell.egg-info/requires.txt b/src/gameshell.egg-info/requires.txt
new file mode 100644
index 0000000..58d3608
--- /dev/null
+++ b/src/gameshell.egg-info/requires.txt
@@ -0,0 +1 @@
+ruamel.yaml
diff --git a/src/gameshell.egg-info/top_level.txt b/src/gameshell.egg-info/top_level.txt
new file mode 100644
index 0000000..a859017
--- /dev/null
+++ b/src/gameshell.egg-info/top_level.txt
@@ -0,0 +1 @@
+gameshell
diff --git a/src/gameshell/__init__.py b/src/gameshell/__init__.py
new file mode 100644
index 0000000..7ac5d86
--- /dev/null
+++ b/src/gameshell/__init__.py
@@ -0,0 +1,6 @@
+if __name__ == "__main__":
+    from . import main
+    from . import gamebase
+    sh = main.GameShell(gamebase.GameBase())
+    sh.menuMode()
+    sh.run()
diff --git a/src/gameshell/__main__.py b/src/gameshell/__main__.py
new file mode 100644
index 0000000..7ac5d86
--- /dev/null
+++ b/src/gameshell/__main__.py
@@ -0,0 +1,6 @@
+if __name__ == "__main__":
+    from . import main
+    from . import gamebase
+    sh = main.GameShell(gamebase.GameBase())
+    sh.menuMode()
+    sh.run()
diff --git a/gamebase.py b/src/gameshell/gamebase.py
similarity index 97%
rename from gamebase.py
rename to src/gameshell/gamebase.py
index 2a88e9c..3554244 100644
--- a/gamebase.py
+++ b/src/gameshell/gamebase.py
@@ -2,18 +2,18 @@
 
 import re as _re
 import heapq as _hq
-import gamemap as _gm
-import gameevents as _ge
+from . import gamemap as _gm
+from . import gameevents as _ge
 import random as _ra
 import os as _os
 import sys as _sys
 import pickle as _pi
 import ruamel.yaml as _yaml
 import textwrap as _tw
-import gamethings as _gt
-import gamelocus as _gl
-import gamesequence as _gs
-import gameutil as _gu
+from . import gamethings as _gt
+from . import gamelocus as _gl
+from . import gamesequence as _gs
+from . import gameutil as _gu
 
 class GameError(RuntimeError):
     pass
diff --git a/gameevents.py b/src/gameshell/gameevents.py
similarity index 100%
rename from gameevents.py
rename to src/gameshell/gameevents.py
diff --git a/gamegui.py b/src/gameshell/gamegui.py
similarity index 100%
rename from gamegui.py
rename to src/gameshell/gamegui.py
diff --git a/gamelocus.py b/src/gameshell/gamelocus.py
similarity index 100%
rename from gamelocus.py
rename to src/gameshell/gamelocus.py
diff --git a/gamemap.py b/src/gameshell/gamemap.py
similarity index 97%
rename from gamemap.py
rename to src/gameshell/gamemap.py
index 2c4be4e..e6903fb 100644
--- a/gamemap.py
+++ b/src/gameshell/gamemap.py
@@ -3,8 +3,8 @@ import re
 import heapq
 import ruamel.yaml
 import math as _mt
-import gamethings as _gt
-import gamelocus as _gl
+from . import gamethings as _gt
+from . import gamelocus as _gl
 from ruamel.yaml.comments import CommentedMap
 
 class Singleton(object):
diff --git a/gamesequence.py b/src/gameshell/gamesequence.py
similarity index 100%
rename from gamesequence.py
rename to src/gameshell/gamesequence.py
diff --git a/gamethings.py b/src/gameshell/gamethings.py
similarity index 98%
rename from gamethings.py
rename to src/gameshell/gamethings.py
index ae615c7..cd3304e 100644
--- a/gamethings.py
+++ b/src/gameshell/gamethings.py
@@ -586,17 +586,20 @@ class Door(Thing):
                 description = "The {0} is unlocked.".format(name)
         else:
             if locked:
-                description += " It is locked.".format(name)
+                description += " It is locked."
             else:
-                description += " It is unlocked.".format(name)
-        super(Door, self).__init__('d', name, x, y, description, 1)
-        self.passable = not locked
+                description += " It is unlocked."
+        flags = 1
+        if locked:
+            flags = 0
+        super(Door, self).__init__('d', name, x, y, description, flags)
         self.key = key
         self.graphic = graphic
             
     def lock(self, key = None):
         if key == self.key:
-            self.passable = not self.passable
+            self.flags ^= 1
+            #self.passable = not self.passable
             if self.descBase == None:
                 if self.passable:
                     self.description = "The {0} is unlocked.".format(self.name)
@@ -604,9 +607,9 @@ class Door(Thing):
                     self.description = "The {0} is locked.".format(self.name)
             else:
                 if self.passable:
-                    self.description += " It is unlocked.".format(self.name)
+                    self.description += " It is unlocked."
                 else:
-                    self.description += " It is locked.".format(self.name)
+                    self.description += " It is locked."
             return True
         return False
         
diff --git a/gameutil.py b/src/gameshell/gameutil.py
similarity index 100%
rename from gameutil.py
rename to src/gameshell/gameutil.py
diff --git a/locusdemo.py b/src/gameshell/locusdemo.py
similarity index 100%
rename from locusdemo.py
rename to src/gameshell/locusdemo.py
diff --git a/gameshell.py b/src/gameshell/main.py
similarity index 97%
rename from gameshell.py
rename to src/gameshell/main.py
index bb394f6..2fe66ac 100644
--- a/gameshell.py
+++ b/src/gameshell/main.py
@@ -1,16 +1,16 @@
 # gameshell.py
 
-from shell import Shell
-from gamebase import GameBase
+from .shell import Shell
+from .gamebase import GameBase
 import sys as _sys
 import os as _os
 #import re
 import heapq
 #import gamemap
-import gameevents
+from . import gameevents
 import textwrap as _tw
 from shutil import get_terminal_size as _gts
-import gameutil as _gu
+from . import gameutil as _gu
 #import random
 
 TERM_SIZE = _gts()[0]
diff --git a/shell.py b/src/gameshell/shell.py
similarity index 100%
rename from shell.py
rename to src/gameshell/shell.py
diff --git a/tile.py b/src/gameshell/tile.py
similarity index 100%
rename from tile.py
rename to src/gameshell/tile.py