🚀 go-pugleaf

In article <1992Dec28.144429.1427@jupiter.sun.csd.unb.ca> kinsman@jupiter.sun.csd.unb.ca (Aphoriel/Kinsman) writes:
>This is a question from someone new to C...
>
>How could I set up C code so that a program goes to a function where the name
>of the function is placed in a string variable? The specific use I'm thinking
>of is for an adventure game, where the function the parser calls depends on
>the verb the player used in typing in his command.. I could set it up as:
>
>-If verb_parsed is 'eat' then call eat_function
>-If verb_parsed is 'give' then call give_function
>
>and so forth, but this is awful... How could I write it in C to look like:
>
>-Go to [verb_parsed + string_holding_parameter_characters]
>
>Like that.
>
>Thanks in advance,
>-Sean Givan / Aphoriel/Kinsman

Hmm, I think this problem has come up several times before.  Unless
there is some nifty new keen way of doing it, I don't think that this
can be done easily.  The best way I can think of offhand is using
a look-up table of function pointers and to tokenize the verb
parameter.  For example:

enum Functions {
  EAT, SLEEP, KILL
};

void (*ftbl)(char *arglist)[MAX_FUNCTIONS];

void DoFunction( int token, char *arg_list )
{
   (*ftbl)(arg_list)[token];
}

You may need to check the syntax, but this is in effect what you do.
To add other functions you simply expand the token values (
"Functions" ) and the ftbl.  This is as simple as you can get.

Brian