Added hooks at_pre_cmd() and at_post_cmd() for easy implementation of stuff like prompts.

Added obj.exit property to objects for easily finding all exits from a room.

src/commands/cmdhandler.py

@@ -385,9 +385,15 @@ def cmdhandler(caller, raw_string, unloggedin=False, testing=False):
                 # only return the command instance
                 return cmd
 
+            # pre-command hook
+            cmd.at_pre_cmd()
+
             # Parse and execute        
             cmd.parse()
             cmd.func()
+
+            # post-command hook
+            cmd.at_post_cmd()
             # Done! 
 
         except ExecSystemCommand, exc:             

src/commands/command.py

@@ -126,6 +126,19 @@ class Command(object):
     
     # Common Command hooks         
 
+    def at_pre_cmd(self):
+        """
+        This hook is called before self.parse() on all commands
+        """
+        pass
+
+    def at_post_cmd(self):
+        """
+        This hook is called after the command has finished executing 
+        (after self.func()).
+        """
+        pass
+
     def parse(self):
         """
         Once the cmdhandler has identified this as the command we

src/commands/default/muxcommand.py

@@ -25,6 +25,19 @@ class MuxCommand(Command):
         are satisfied using the default check in Command. 
         """
         return super(MuxCommand, self).has_perm(srcobj)
+    
+    def at_pre_cmd(self):
+        """
+        This hook is called before self.parse() on all commands
+        """
+        pass
+
+    def at_post_cmd(self):
+        """
+        This hook is called after the command has finished executing 
+        (after self.func()).
+        """
+        pass
 
     def parse(self):
         """