A trigger that attacks when they see another character attack.

Posted by MythicalPlatypus on Mon 28 May 2018 02:01 PM — 4 posts, 16,591 views.

MythicalPlatypus Mon 28 May 2018 02:01 PM #0

Im trying to work on a trigger that will input

"attack <name of creature"

whenever it sees

"Jinx just attacked the <imp|huge rat|any creature>"

My problem is that sometimes it is attacked "the imp" sometimes "the huge rat" "the female hobgoblin" "the lizard man", Etc... aswell as "the cyclops" (which works fine)

I can't quite figure out how to have it only select "rat", "lizard".

as I said it works with one worded creatures (aka Cyclops)


<triggers>
  <trigger
   enabled="y"
   group="auto attacks"
   keep_evaluating="y"
   match="^Jinx just attacked (?:the )?(.*?) with a (.*?)$"
   regexp="y"
   sequence="100"
  >
  <send>a %1
a %1
c dobuza %1</send>
  </trigger>
</triggers>

Thankyou for any input

Nick Gammon Australia Forum Administrator Mon 28 May 2018 09:10 PM #1

The easiest thing in this case is to post-process the matching name to grab the last word, like this:


<triggers>
  <trigger
   enabled="y"
   group="auto attacks"
   keep_evaluating="y"
   match="^Jinx just attacked (?:the )?(.*?) with a (.*?)$"
   regexp="y"
   send_to="12"
   sequence="100"
  >
  <send>

who = string.match ("%1", "%%S+$")

Send ("a " .. who)
Send ("a " .. who)
Send ("c dobuza " .. who)

</send>
  </trigger>
</triggers>

The string.match there finds one or more characters which are not a space, at the end of the string. This will effectively be the last (or only) word.

For advice on how to copy the above, and paste it into MUSHclient, please see Pasting XML.

The "send_to" being 12 means "send to script" (this will work if you follow the instructions above to paste it back into the client).

You need %% in the string.match, like I showed, to "escape" the meaning of a % in the send field. If you used a script file it would be done slightly differently, eg:


function attach_trigger (name, line, wildcards)
  who = string.match (wildcards [1], "%S+$")

  Send ("a " .. who)
  Send ("a " .. who)
  Send ("c dobuza " .. who)
end -- attach_trigger

MythicalPlatypus Mon 28 May 2018 11:02 PM #2

Hey thank-you so much for your help! It was very informative, Only one thing I have to ask is what does %S+$ do? I know "+" is one or more of the previous characters (be+d, Beeed etc..) and $ is end of string. But unsure as to what %S does? is it just code for not space? Because I would have assumed would would have been (! +$). Thank-you again.

Also do you mind if I ask more scripting questions in here or are new topics better?

Nick Gammon Australia Forum Administrator Tue 29 May 2018 07:00 AM #3

The page for string.find (which encompasses the syntax for string.match) explains it:

http://www.gammon.com.au/scripts/doc.php?lua=string.find

%S is indeed code for "not space". %s is the code for space.

So, %S+ is one or more of anything but a space.

The Lua pattern matching is a little different to regular expressions used in triggers.

Quote:

Also do you mind if I ask more scripting questions in here or are new topics better?

New topics are better, they are more easily searchable by other people.