Make the executable importable

In preparation for moving the executable to an more standard
entrypoint, make it safely importable and give it a separate
conditional main() execution.

diff --git a/bin/mudpy b/bin/mudpy
index db4d147..d7ec045 100755 (executable)
--- a/bin/mudpy
+++ b/bin/mudpy
@@ -13,21 +13,29 @@ sys.path.append(os.path.realpath("."))
 
 import mudpy
 
-# start it up
-mudpy.misc.setup()
 
-# loop indefinitely while the world is not flagged for termination or
-# there are still connected users
-while not mudpy.misc.universe.terminate_flag or mudpy.misc.universe.userlist:
+def main():
 
-    # the world was flagged for a reload of all code/data
-    if mudpy.misc.universe.reload_flag:
-        imp.reload(mudpy)
-        mudpy.misc.reload_data()
-        mudpy.misc.universe.reload_flag = False
+    # start it up
+    mudpy.misc.setup()
 
-    # do what needs to be done on each pulse
-    mudpy.misc.on_pulse()
+    # loop indefinitely while the world is not flagged for termination or
+    # there are still connected users
+    while (not mudpy.misc.universe.terminate_flag or
+           mudpy.misc.universe.userlist):
 
-# shut it all down
-mudpy.misc.finish()
+        # the world was flagged for a reload of all code/data
+        if mudpy.misc.universe.reload_flag:
+            imp.reload(mudpy)
+            mudpy.misc.reload_data()
+            mudpy.misc.universe.reload_flag = False
+
+        # do what needs to be done on each pulse
+        mudpy.misc.on_pulse()
+
+    # shut it all down
+    mudpy.misc.finish()
+
+
+if __name__ == '__main__':
+    sys.exit(main())