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 Entire forum ➜ MUSHclient ➜ Lua ➜ How do I handle null %1 variables

How do I handle null %1 variables

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Posted by Errigour   USA  (32 posts)  Bio
Date Sun 24 Jul 2011 09:03 PM (UTC)

Amended on Sun 24 Jul 2011 09:25 PM (UTC) by Errigour

Message
I'm looking for something like The last question I asked accept it used numbers and only needed to be "heal *" but
this one is "^de( .*){0,1}$" and I can't make lua use
if %1 then <do something> else <do something else> end

if %1 then
  --do extra stuff
else
  --do repetitive stuff
end

or

if !%1 then
  --do repetitive stuff
else
  --do extra stuff
end


The following is what I am using the if statement for.

Alias:^de( .*){0,1}$

Send("cast '@castingspell'")

--I don't want this to happen if I type de by itself
--I don't want this to happen if I type de by itself
      Send("cast '@castingspell' %1")
      SetVariable("target", "%1")
      ColourNote("#0000ff", "#FFFFFF", string.format("Target set as: %s", GetVariable("target")))
--I don't want this to happen if I type de by itself
--I don't want this to happen if I type de by itself
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Posted by Nick Gammon   Australia  (23,133 posts)  Bio   Forum Administrator
Date Reply #1 on Sun 24 Jul 2011 09:31 PM (UTC)
Message
This is the third time you have asked this, and twice before I referred you to FAQ #50.

Template:faq=50 Please read the MUSHclient FAQ - point 50.



Does that not explain things well? In what way is it lacking?

Inside FAQ #50 it mentions using this:


<aliases>
  <alias
   match="^heal( {1,}(.*)){0,1}$"
   enabled="y"
   regexp="y"
   send_to="12"
   sequence="100"
  >
  <send>
if "%2" == "" then
  Send ("cast healing touch self")
else
  Send ("cast healing touch %2")
end -- if
</send>
  </alias>
</aliases>


This is amazingly similar to what you are trying to do.

So to make the minor changes for your case it would be:


<aliases>
  <alias
   match="^de( {1,}(.*)){0,1}$"
   enabled="y"
   expand_variables="y"
   regexp="y"
   send_to="12"
   sequence="100"
  >
  <send>
if "%2" == "" then
  Send("cast '@castingspell'")
else
  Send("cast '@castingspell' %1")
  SetVariable("target", "%1")
  ColourNote("#0000ff", "#FFFFFF", 
             string.format("Target set as: %s", GetVariable("target")))
end -- if
</send>
  </alias>
</aliases>


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


If you can tell me how to improve the FAQ to make it clearer I would be grateful.

- Nick Gammon

www.gammon.com.au, www.mushclient.com
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Posted by Errigour   USA  (32 posts)  Bio
Date Reply #2 on Sun 24 Jul 2011 09:48 PM (UTC)

Amended on Sun 24 Jul 2011 09:54 PM (UTC) by Errigour

Message
nm thanks
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Posted by Errigour   USA  (32 posts)  Bio
Date Reply #3 on Sun 24 Jul 2011 09:55 PM (UTC)
Message
It's hard for me to understand that stuff so I don't
soak in everything the page says but thank you.
Top

Posted by Edwin_r   (6 posts)  Bio
Date Reply #4 on Wed 25 Jul 2012 02:59 AM (UTC)
Message
Nick Gammon said:

This is the third time you have asked this, and twice before I referred you to FAQ #50.

(faq=50)


Does that not explain things well? In what way is it lacking?

Inside FAQ #50 it mentions using this:


<aliases>
  <alias
   match="^heal( {1,}(.*)){0,1}$"
   enabled="y"
   regexp="y"
   send_to="12"
   sequence="100"
  >
  <send>
if "%2" == "" then
  Send ("cast healing touch self")
else
  Send ("cast healing touch %2")
end -- if
</send>
  </alias>
</aliases>


This is amazingly similar to what you are trying to do.

So to make the minor changes for your case it would be:


<aliases>
  <alias
   match="^de( {1,}(.*)){0,1}$"
   enabled="y"
   expand_variables="y"
   regexp="y"
   send_to="12"
   sequence="100"
  >
  <send>
if "%2" == "" then
  Send("cast '@castingspell'")
else
  Send("cast '@castingspell' %1")
  SetVariable("target", "%1")
  ColourNote("#0000ff", "#FFFFFF", 
             string.format("Target set as: %s", GetVariable("target")))
end -- if
</send>
  </alias>
</aliases>


(pasting)

If you can tell me how to improve the FAQ to make it clearer I would be grateful.

--------------------------------

Dear Nick, i'll appreciate if you could give me an example of this code but applied to a table that contains several objects: e.g.

instead of:
Send("cast '@castingspell' %1")

i would like to:
Send ("cast '[protection|benediction|sanctuary]')

the idea it's casting all these spells, by an alias. Obviously i have no idea how to invoke that table.

Thank you so muy, i'm a completly newbie in Lua, sadly.
Top

Posted by Nick Gammon   Australia  (23,133 posts)  Bio   Forum Administrator
Date Reply #5 on Wed 25 Jul 2012 03:15 AM (UTC)
Message
This looks like a cross-post of:

http://www.gammon.com.au/forum/?id=11722

- Nick Gammon

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