Re: Combining tabled strings

[James C. W. <jfc...@ya...>]

Sorry for taking so long to respond...
 



So actually that "if" problem was just a typo on my part,
sorry. However, a new spanner is in the works: Pipmak still doesn't seem to
translate the concatenation into the literal string needed. It just prints out
the standard "Unused key 13 pressed" and does nothing when I press
enter (the trigger for this whole thing). Note that if I replace the string
"HELP" in the query with the raw concatenation, pipmak finds equality
and it works.(But of course that doesn't help, cause that just makes Pipmak see
anything the player types as being correct.) 

Here's the chunk that seems to be the problem:

 

 

 elseif key == pipmak.key_return
then

      local execute =
table.concat(keypress)

      if execute ==
"HELP" then

       pipmak.schedule(2,
function() 

        preScreen =
pipmak.newimage(460, 340)

        preScreen:color(100, 33,
248)

       
screen:setimage(preScreen)

        preScreen:drawtext(50,
90, ">:_" .. table.concat(keypress) .. "",
"../fonts/Daniel_J_-_Deka.otf", 18, pipmak.left)

        preScreen:drawtext(50,
120, "VISITOR LOG \nMAP \nCOMMUNICATION \nEMERGENCY",
"../fonts/Daniel_J_-_Deka.otf", 18, pipmak.left)

       
screen:setimage(preScreen)

       end)

      return true

      else 

        return false

      end


Thanks, 
  James CW
--- On Wed, 11/30/11, Christian Walther <cwa...@gm...> wrote:

From: Christian Walther <cwa...@gm...>
Subject: Re: Combining tabled strings
To: pip...@li...
Date: Wednesday, November 30, 2011, 3:48 PM

James C. Wilson wrote:
> local execute = ""..keypress[1]..""..keypress[2]..""..keypress[3]..
> ""..keypress[4].. ""..keypress[5].. ""..keypress[6].. ""..keypress[7]..
> ""..keypress[8].. ""..keypress[9].. ""..keypress[10].. ""
>
> if execute == "map" then

Works for me. By the way, you don't need all these empty strings - this 
works too:

   local execute = keypress[1]..keypress[2]..keypress[3]..
     keypress[4]..keypress[5]..keypress[6]..keypress[7]..keypress[8]..
     keypress[9]..keypress[10]

And if you want to save some typing, or handle variable-sized lists, a 
shorter version is

   local execute = table.concat(keypress)

(see http://www.lua.org/manual/5.0/manual.html#5.4 )

> I receive an "unexpected symbol near "if" error.

That suggests that there is something wrong with what comes before the 
"if" - Lua is not expecting an "if" there, but something that completes 
whatever comes before.

  -Christian


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