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Trigger reacting to itself / looping

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Posted by Natasha (3 posts) Bio

Date

Thu 31 Jan 2019 12:16 AM (UTC)

Amended on Thu 31 Jan 2019 12:22 AM (UTC) by Natasha

Message

I have a problem with my trigger.
Basically, when I try to cast a spell, it has a chance to fail (resulting in "You lost your concentration!" message in output). I want the trigger to re-cast the spell until it succeeds.
Currently, it reacts to the message and also casts the spell without a problem.
The problem is that it doesn`t react to the message once it has been fired (or rather the message this trigger caused).
Here is the trigger:


<triggers>
  <trigger
   enabled="y"
   group="Casting"
   keep_evaluating="y"
   match="You lost your concentration!"
   name="spellAutoRetry"
   send_to="12"
   sequence="100"
  >
    <send>
       activeSpell = GetVariable('activeSpell')
       Send("cast '" .. activeSpell .. "'")   
    </send>
  </trigger>
</triggers>

EDIT:
I have "activeSpell" variable declared in MUSHClient, it holds the name of the spell I want to re-cast

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Posted by

Fiendish USA (2,541 posts) Bio Global Moderator

Date

Reply #1 on Thu 31 Jan 2019 05:08 PM (UTC)

Amended on Thu 31 Jan 2019 05:09 PM (UTC) by Fiendish

Message

The trigger doesn't cause messages. The trigger sends a command to the server. Whatever happens after that is a whole new sequence of events. If your trigger isn't matching what comes back, then either the pattern has changed or the trigger or trigger group has been disabled by something else. Can you show a full copy-paste from the game of you casting a spell, the trigger catching the concentration failure, recasting, and then failing to catch the next concentration failure? That would help rule out whether the pattern needs to be changed.

https://github.com/fiendish/aardwolfclientpackage

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Posted by Natasha (3 posts) Bio

Date

Reply #2 on Thu 31 Jan 2019 07:32 PM (UTC)

Amended on Thu 31 Jan 2019 07:34 PM (UTC) by Natasha

Message

Thanks for your swift reply.
I also disabled all timers, alliases and triggers to rule out the "interference" problem.

Here is the output:


[AFK] 741H 3010M 1083V (100) 0TNL>
cast 'create food'
You lost your concentration!
cast 'create food'

[AFK] 741H 3007M 1083V (100) 0TNL>You lost your concentration!

[AFK] 741H 3004M 1083V (100) 0TNL>

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Posted by Nick Gammon Australia (23,165 posts) Bio Forum Administrator

Date

Reply #3 on Thu 31 Jan 2019 08:07 PM (UTC)

Amended on Thu 31 Jan 2019 08:08 PM (UTC) by Nick Gammon

Message

You are matching on "You lost your concentration!"

This won't match on:


[AFK] 741H 3007M 1083V (100) 0TNL>You lost your concentration!

There is stuff in front of "You".

You could change the trigger to match on:


*You lost your concentration!

- Nick Gammon

www.gammon.com.au, www.mushclient.com

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Posted by

Fiendish USA (2,541 posts) Bio Global Moderator

Date

Reply #4 on Thu 31 Jan 2019 08:45 PM (UTC)

Amended on Thu 31 Jan 2019 08:49 PM (UTC) by Fiendish

Message

IMO instead of changing the match pattern you should change your prompt line to end in a carriage return. Triggers are much safer when you can reliably choose to only match at the start of a line. It makes misfires much less likely. If you change your match pattern to start with * then anyone can screw with your trigger just by talking.

https://github.com/fiendish/aardwolfclientpackage

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Posted by

Natasha (3 posts) Bio

Date

Reply #5 on Thu 31 Jan 2019 09:38 PM (UTC)

Message

Thanks a lot - it works (It was the prompt).
Sorry for bothering you with such a thing.

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Posted by

Nick Gammon Australia (23,165 posts) Bio Forum Administrator

Date

Reply #6 on Thu 31 Jan 2019 11:04 PM (UTC)

Message

Fiendish has an excellent point. If the MUD lets people emote things, someone could emote. "You lost your concentration!" which would make your trigger fire.

- Nick Gammon

www.gammon.com.au, www.mushclient.com

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