Single Comment

@Fergus: can there be a problem with functions that have a name starting with a period?

It would appear so. I ran this code to test this:

def cat * 2 #0;
def .dog *2 #0;
set p fn cat 8;
set q fn .dog 8;
dump;

And the result I got was this:

array(1) {
  [0]=>
  array(1) {
    ["main"]=>
    array(2) {
      ["p"]=>
      int(16)
      ["q"]=>
      array(2) {
        [0]=>
        string(1) "8"
        [1]=>
        string(2) "*2"
      }
    }
  }
}

This may be because GAME Code uses the period to separate array elements from arrays. I would recommend using aliases (old way) or rewriting the $piece array (new way) to avoid the need for writing functions with names that start with a period.