0 votes
by (150 points)

I'm trying to write a simple RPG, and I've encountered a problem.

I have an equip screen set up like this:

<<for _slot range $activeslots>>
	<<link "Unequip _slot.name" "$passage">>
		<<Remove _slot>><</link>><br>

When executed, it outputs something like this:

Remove helmet
Remove jacket

But whatever line I click, it only unequips the last item in the list.

Now, I understand why it happens; when generating lines, the program iterates through every non-empty slot in succession, but by the time I click on it, the _slot is already set to the last non-empty slot.

The question is, is there a way to fix it? Something that will allow every line to "remember" what value of _slot it was generated with, and call Remove with correct args?

Thanks in advance!

1 Answer

+2 votes
by (38.6k points)

The problem is that, by the time the user can click, the value of "_slot" is always going to be the last value.  This is where the <<capture>> macro comes in handy.  Try this:

<<capture _slot>><<for _slot range $activeslots>>
	<<link "Unequip _slot.name" "$passage">>
		<<Remove _slot>><</link>><br>

Now that will "capture" the value of "_slot", so that when the user clicks the link, it will use the value that "_slot" had when the code originally executed, instead of the value that "_slot" currently has.

Enjoy!  :-)

by (150 points)

Thanks, that's exactly what I was looking for!

by (154k points)

Generally the <<capture>> macro is placed within the <<for>> macro's body like so.

<<for _slot range $activeslots>>
	\<<capture _slot>>
		<<link "Unequip _slot.name" "$passage">>
			\<<Remove _slot>>


Welcome to Twine Q&A, where you can ask questions and receive answers from other members of the community.

You can also find hints and information on Twine on the official wiki and the old forums archive.

See a spam question? Flag it instead of downvoting. A question flagged enough times will automatically be hidden while moderators review it.