Little issue, need some help.

ID:156588
 
Sep 1 2010, 12:13 pm
Hey guys, I need some help.

I am using 3 vars to determine the dimension of something.

One has a text value that has the regular way you see it, "XxY".
The other two are called dimension_x and dimension_y. These are assigned numerical values.

Now think of this system like a matrix. I have the dimensions, and now I put an entry into the list of entries.
I assign it's name as a specified name the system lets you choose.
It then has a text value assigned to it, just as the dimensions variable.

I need to be able to find the position of this entry at any time. I have the variables separated by a lowercase X, and the other characters are only numerical values. I need to be able to separate the two numbers so I can manipulate them better. I realize this will need some text manipulating procedures, but what should I use to go about this?
Sep 2 2010, 11:34 am
You could make a parser which reads the numbers according to how the format looks in the string.

for example. if you have:

"100x100"

You can set the parser up like so:

parser

    var
    
        feed_char       = ""
        feed_d1         = ""
        feed_d2         = ""
        feed_total      = ""
        
        dimension_x     = 0
        dimension_y     = 0
        
    proc
    
        Parse(T as text)
            var/L = 0        // length of string
            var/d = 1        // current dimension
            // copy the argument text to feed_total
            
            feed_total = T
            L = length(feed_total)
            
            // begin reading the string, while looking for a "x"
            // if "x" exists, switch text writing to dimension 2.
            
            for (var/i = 1; i <= L; i++)
                feed_char = copytext(feed_total, i, i+1)
                
                if (feed_char == "x")
                    d = 2
                else
                    if (d == 1)
                        feed_d1 += feed_char
                    else if (d == 2)
                        feed_d2 += feed_char
                        
            // at the end, convert to numbers
            
            dimension_x = text2num(feed_d1)
            dimension_y = text2num(feed_d2)
            


///////////
// DEBUG //
///////////

mob
    Login()
        var/parser/P = new
        P.Parse("160x180")
        src << "[P.dimension_x] and [P.dimension_y]"


btw, text2num handles spacing and irregular symbols in the string, and only takes numbers into account. That's pretty handy huh?