I6: Comparing Properties

Authoring Inform 7
#1

I have two objects which share a class. Both have a property (called “slot”) which contains a string. For both objects it’s slot “head”. Now I want to check (in the class object) if these properties are identical. So I objectloop til I find the object I want object 1 to compare with, and compare the properties.

objectloop(obj){
  if(obj~=self && obj ofclass Armour && parent(obj)==player){
    if(obj.slot==self.slot){
      if(obj.is_worn==1){
        "You're wearing ",(the)obj," already!";
      }
    }
  }
}

Problem: obj.slot and self.slot are not identical, though they both have the value “head”. Debugging shows they have different integer values. Why is that so, and how can I work around it?

#2

You want the I6 extension istring.h, which can be downloaded from inform-fiction.org/extensions/complete.html. I’ve never used it, but it should allow you to compare two strings and find out if they’re identical.

#3

sigh

Thanks, according to the dox that’s exactly what I need.

It slowly deems to me that the concept behind Inform takes getting used to it.

#4

Also, BTW, the link that I gave was to the list of extensions on the I6 website. That list hasn’t been updated in about 4 years. There may be a few newer extensions in the if-archive.

In fact, I’m pretty sure there’s at least one. I didn’t see my EventList.h extension on the I6 list, and it was in the archive the last time I looked (at http://www.ifarchive.org/indexes/if-archiveXinfocomXcompilersXinform6XlibraryXcontributions.html). You might find it useful. It implements TADS-style event lists in I6. These objects are useful, among other things, for having your NPC choose from a list of default conversation responses (for a less boring game transcript). They can also fire off complex events, if desired.

#5

I6 is generally not conducive to comparing strings. Can you replace the slot values with integer constants? Or objects? It’ll be a lot faster.

#6

Great idea! I’ll turn the strings into integers and give them constant names.