Added at_before hooks to CmdGet, CmdGive, CmdDrop

Added in references to at_before hooks for the get, give, and drop commands. If these hooks return 'False' or 'None', the action is canceled.

evennia/commands/default/general.py

@@ -267,13 +267,17 @@ class CmdGet(COMMAND_DEFAULT_CLASS):
                 caller.msg("You can't get that.")
             return
             
+        # calling at_before_get hook method
+        if not obj.at_before_get(caller):
+            return
+
         obj.move_to(caller, quiet=True)
         caller.msg("You pick up %s." % obj.name)
         caller.location.msg_contents("%s picks up %s." %
                                      (caller.name,
                                       obj.name),
                                      exclude=caller)
-        # calling hook method
+        # calling at_get hook method
         obj.at_get(caller)
 
 
@@ -308,6 +312,10 @@ class CmdDrop(COMMAND_DEFAULT_CLASS):
         if not obj:
             return
             
+        # Call the object script's at_before_drop() method.
+        if not obj.at_before_drop(caller):
+            return
+
         obj.move_to(caller.location, quiet=True)
         caller.msg("You drop %s." % (obj.name,))
         caller.location.msg_contents("%s drops %s." %
@@ -350,6 +358,11 @@ class CmdGive(COMMAND_DEFAULT_CLASS):
         if not to_give.location == caller:
             caller.msg("You are not holding %s." % to_give.key)
             return
+            
+        # calling at_before_give hook method
+        if not to_give.at_before_give(caller, target):
+            return
+        
         # give object
         caller.msg("You give %s to %s." % (to_give.key, target.key))
         to_give.move_to(target, quiet=True)