Checking health using script

Posted by Avocado on Sat 09 Nov 2013 06:01 AM — 6 posts, 23,495 views.

Avocado Sat 09 Nov 2013 06:01 AM #0

On, http://www.gammon.com.au/forum/?id=6030, you explained how to create a trigger that sends a colored note when hp is low. How can I do this with an an alias script please?
Below is what I was trying, but it doesn't work.


<aliases>
  <alias
   match="chkhp"
   enabled="y"
   send_to="12"
   sequence="100"
  >
  <send>require "wait"
wait.make(function () -- Start of Coroutine

Send ("look")

  local x = wait.match("^[%/%hp*",2)

if %1 &lt; 50 then
  Note ("Your health is low.")
else
  Note ("Your health is OK.")
end --

end) -- end of Coroutine</send>
  </alias>
</aliases>

Nick Gammon Australia Forum Administrator Sat 09 Nov 2013 06:21 AM #1

The "match" doesn't look right. It looks like a half regular expression, half normal match.

Regular expressions

Regular expressions (as used in triggers and aliases) are documented on the Regular expression tips forum page.
Also see how Lua string matching patterns work, as documented on the Lua string.find page.

Avocado Sun 10 Nov 2013 12:04 AM #2

Thanks Nick,

I also had to look into other sites on internet for pattern matching. I included the website address on the code as remarks. Below is what I came up with. I wasn't sure if I was able to 'grab' all 6 variables at once, so I used 3 lines to 'capture' them as variables. With speed of current CPU's I doubt any slowdowns, but if anyone would like to suggest a slicker way, please do. I would like to learn.


<aliases>
  <alias
   match="baf"
   enabled="y"
   send_to="12"
   sequence="100"
  >
  <send>-- find my hp and mana and movement points


require "wait"
wait.make (function() -- start of coroutine


Send ("look")

-- This is what we're looking for:  [100/100hp 100/100mn 100/100mv]

local x = wait.match ("[*tnl] &gt;", 2) 

Note (x)  -- This will print out what's 'captured', i.e.:  [100/100hp 100/100mn 100/100mv]

if not x then
  ColourNote ("white", "blue", "no match found")
else
  ColourNote ("white", "blue", "YES match is found")


-- Pattern matching:  http://www.lua.org/pil/20.1.html 
-- to capture hp, mana, &amp; movement pts as variables

  _, _, hp, hpT = string.find(x, "%[(%d+)/(%d+)hp %d+/%d+mn %d+/%d+mv.")
  _, _, mn, mnT = string.find(x, "%[%d+/%d+hp (%d+)/(%d+)mn %d+/%d+mv.")
  _, _, mv, mvT = string.find(x, "%[%d+/%d+hp %d+/%d+mn (%d+)/(%d+)mv.")

  Note ("hit points is:  ", hp)
  Note ("mana is:  ", mn)  
  Note ("movement is:  ", mv)

end -- if

end) -- of Coroutine</send>
  </alias>
</aliases>

Avocado Sun 10 Nov 2013 12:10 AM #3

darn it...

that one line looks wrong...


local x = wait.match ("[*mv]", 2)

in parenthesis, there should be five characters.:

quotes
open bracket
asterisk
mv (two lower case letters m v)
close bracket.
comma
space
2 (number two)

Avocado Sun 10 Nov 2013 12:13 AM #4

i meant 8 characters. Sorry, can't count.

Nick Gammon Australia Forum Administrator Sun 10 Nov 2013 06:34 AM #5

Maybe show the actual MUD output rather than trying to describe it.