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ryan0_o
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Joined: 17 Aug 2016
Posts: 19

PostPosted: Wed Aug 17, 2016 9:03 am   

Simple Travel Script Porting
 
Code:

#class {travel} {kill}
#class {travel} {open}

#var travel 0

#function {revdir}
{
     #switch {"%1"}
     {
          #case {"north"} {#return south};
          #case {"east"}  {#return west};
          #case {"south"} {#return north};
          #case {"west"}  {#return east};
          #case {"up"}    {#return down};
          #case {"down"}  {#return up}
     }
}
 
#function {longdir}
{
     #switch {"%1"}
     {
          #case {"n"} {#return north};
          #case {"e"} {#return east};
          #case {"s"} {#return south};
          #case {"w"} {#return west};
          #case {"u"} {#return up};
          #case {"d"} {#return down}
     }
}
 
#function {shortdir}
{
     #switch {"%1"}
     {
          #case {"north"} {#return n};
          #case {"east"}  {#return e};
          #case {"south"} {#return s};
          #case {"west"}  {#return w};
          #case {"up"}    {#return u};
          #case {"down"}  {#return d}
     }
}
 
#function {finddir}
{
     #if {"%1" != "%2"}
     {
          #return %2
     }
     {
          #return %3
     }
}

#alias {travel}
{
     #if {$travel}
     {
          #var travel 0;
          #showme <118>You stop traveling.
     }
     {
          #var travel 1;
          #var lastdir @longdir{%0};
          #var lastdir @revdir{$lastdir};
          %0
     }
}

#act {[Exits: %1]}
{
     #if {$travel}
     {
          #if {"%1" != "%* %*"}
          {
               #var travel 0;
          }

          #regex {%1} {%* %* %*}
          {
               #var travel 0;
          }

          #regex {%1} {%* %*}
          {
               #var newdir @finddir{$lastdir;&1;&2};
               #showme <118>You travel $newdir.;

               #var lastdir @revdir{$newdir};

               @shortdir{$newdir}
          }
     }     
}
{1}


Fairly simple. Was just looking to port it to CMUD. I don't want to seem as if I'm looking for a handout. I've done done research and can accomplish this, but I'm sure this is a more effective way. I'm still trying to familiarize myself with CMUDs *MANY* functions. (I.E. %revdir is already available I see)

Thanks in advance.
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shalimar
GURU


Joined: 04 Aug 2002
Posts: 4662
Location: Pensacola, FL, USA

PostPosted: Thu Aug 18, 2016 10:15 am   
 
The %reversedir function works like this:

%reversedir(north) = s
%reversedir(north, 1) = south
%reversedir(%reversedir(north)) = n

Something like this would check single word commands, test them for being a direction, and if so, sets the direction you came from:

#ONINPUT {^(%w)$} {#IF (%reversedir(%1)) {lastDir=%reversedir(%1, 1)}}

Not entirely sure what else you are trying to do without an explanation.

#TR {~[Exits: (*)~]} {does something}
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ryan0_o
Beginner


Joined: 17 Aug 2016
Posts: 19

PostPosted: Thu Aug 18, 2016 11:03 am   
 
Ah sorry. It's basically a traveling script for two-way roads (rooms with only two exits)

You use alias travel (direction) and it continues until it reaches an intersection.

It basically works as is with minor changes. I just didn't know if there was a more... elegant... way to accomplish this.

Also probably worth mentioning that $ is the variable symbol and @ denotes a function for anyone trying to understand this.
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shalimar
GURU


Joined: 04 Aug 2002
Posts: 4662
Location: Pensacola, FL, USA

PostPosted: Thu Aug 18, 2016 11:59 am   
 
that's what I thought
This should turn the mud output into a string list, remove your @lastdir from the list, and then check to make sure there is only one item in the list left before trying to send that as a command

#TR {~[Exits: (*)~]} {
$exits=%replace(%replace(%replace(%1, ", and ", "|"), " and ", "|"), ", ", "|")
#DELITEM $exits @lastDir
#IF (%numitems($exits)=1) {$exits}
}

in CMUD $var referances local variables, @var reverences regular variables, %func() for the predefined functions, and @func() for custom functions
There is no need for custom functions for this in CMUD though.
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ryan0_o
Beginner


Joined: 17 Aug 2016
Posts: 19

PostPosted: Thu Aug 18, 2016 9:48 pm   
 
Code:

#TR {~[Exits: (*)~]}
{
   #if {$traveling}
   {
      $exits = %replace(%replace(%replace(%1,"[",""),"]","")," ","|");
      
      #DELITEM $exits @lastDir;
      
      #if (%numitems($exits)=1)
      {
         $exits;
         #show %ansi(red)You travel $exits;
                        #var lastDir %reversedir($exits);
      }
      {
         #var traveling 0;
         #show %ansi(red)You stop traveling to pick up new directions.;
      }   
   }
}

That's what I have so far. I'll test it when I get a chance.
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ryan0_o
Beginner


Joined: 17 Aug 2016
Posts: 19

PostPosted: Fri Aug 19, 2016 12:22 pm   
 
Code:

#TR {~[Exits: (*)~]}
{
  #if (@traveling)
  {
    $exits = %replace(%replace(%replace(%1,"[",""),"]","")," ","|")
    #DELITEM $exits @lastDir
   
    #if (%numitems($exits)=1)
    {
      $exits
      #var lastDir %reversedir($exits,1)
      #show %ansi(red)You travel $exits
    }
    {
      #var traveling 0
      #show %ansi(red)You stop traveling to pick up new directions.
    }   
  }
}

#alias {te} {#var traveling 1;east;#var lastDir west}
#alias {tw} {#var traveling 1;west;#var lastDir east}
#alias {tn} {#var traveling 1;north;#var lastDir south}
#alias {ts} {#var traveling 1;south;#var lastDir north}
#alias {tu} {#var traveling 1;up;#var lastDir down}
#alias {td} {#var traveling 1;down;#var lastDir up}

Firing but not compiling?
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Vijilante
SubAdmin


Joined: 18 Nov 2001
Posts: 5182

PostPosted: Fri Aug 19, 2016 3:48 pm   
 
I don't see any clear code problems so I am going to guess it is a formatting problem. CMud's parser is much more picky than a compiler for a programming language like C++, but even more advanced parsers require certain to tokens to be grouped in certain ways. I believe CMud requires the open brace to be on the same line as the code it relates to.

These formattings have always worked well:
Code:
#IF (condition) {
 code
} {
 code
}

#IF (condition) {code} {code}
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ryan0_o
Beginner


Joined: 17 Aug 2016
Posts: 19

PostPosted: Fri Aug 19, 2016 9:37 pm   
 
Yes, that fixes it.

Everything works as anticipated.

Thank you sir!
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