New option for Zora's Fountain : Opens automatically with Letter

[GSKirox]

Introduces an new option for the Zora's Fountain setting, which moves King Zora for both ages automatically when finding Ruto's Letter, without needing to show the letter as child first.
This is done by having a new GI_FAST_LETTER_BOTTLE which is used when finding Ruto's letter if this setting is enabled. This way we can easily have a different textbox to notify the player that King Zora moved, and give an empty bottle to the player directly.

This has a slight impact on logic. First this means you get a usable bottle when finding RL even without having the means to go to Zora's Domain to empty it.
And then this also means you can go past King Zora as an adult in logic even without having the logical access to domain as child.
This was hopefully reflected properly to the logic files.

If the player starts with Ruto's Letter then the King Zora moved flag is just set automatically right away, so this is identical to Open Fountain.

Finally, there's special code to handle the case when the player finds Ruto's letter in Zora's Domain directly to move King Zora right away. Else this would need a reload of the area to take the newly put flag into account.
This gives the "Paradox Letter" check a rather funny new interaction :

2026-08-22.14-00-13.mp4

Testing

Testing and video above done on Retroarch.

[flagrama]

Bring back mweep

[GSKirox]

I could add a mweep when finding the letter 🤔

[flagrama]

I mean make the slow version of the setting have the full cutscene again :P

[r0bd0g]

What happens if King Zora is still frozen when you obtain the letter in his room? (Currently requires MW on main branch.) Does the Ice also move?

[r0bd0g]

Okay I'm not 100% sure how bottle-giving locations translate into a logically usable bottle. I think you just need to obtain the deliver letter location, and it gives you the deliver letter drop and that counts as a bottle? Something like that? Can anybody confirm? The change you made to has_bottle, I guess that works to give you logical bottle access, but I don't know if that's how it should be done? You could be obtaining the logical bottle item through the normal way... (though however exactly that works I'm not entirely sure lol). So what you could do is remove the change to has_bottle, move the deliver letter location to a new region, and exit to that region using the old deliver letter logic, while adding an exit to it from the root using the new fast fountain portion of the logic. I think logically that'd be the more canon way to do it, but it's kinda weird, that deliver letter event adds the event to the playthrough I think? I dunno if we really need delivering the letter in the playthrough for letter bottles that automatically empty.

Anyway, the logic as-written has a bug. Because it requires access to domain proper to obtain the deliver letter event, you wouldn't have that event to be able to reverse through king zora. You can fix this as I suggested above, but you can also get it done by adding a copy of the fast fountain logic on the connection back through king zora.

[djevangelia]

So you get the letter bottle with regular GI letter, and through upgrade function, it becomes GI fast bottle, which has different textbox + an on item get effect to set event flag and move KZ.
It makes sense.

I thought a bit about what if use same GI, but if setting is enabled, then in item effect function move KZ + in player get item textbox function change text id. But that's really messy in comparison, and would really only make sense if several other GI:s needed to override their item table text id and/or there was a shortage of GI ids, which there isn't.

[GSKirox]

Okay I'm not 100% sure how bottle-giving locations translate into a logically usable bottle. I think you just need to obtain the deliver letter location, and it gives you the deliver letter drop and that counts as a bottle? Something like that? Can anybody confirm? The change you made to has_bottle, I guess that works to give you logical bottle access, but I don't know if that's how it should be done? You could be obtaining the logical bottle item through the normal way... (though however exactly that works I'm not entirely sure lol). So what you could do is remove the change to has_bottle, move the deliver letter location to a new region, and exit to that region using the old deliver letter logic, while adding an exit to it from the root using the new fast fountain portion of the logic. I think logically that'd be the more canon way to do it, but it's kinda weird, that deliver letter event adds the event to the playthrough I think? I dunno if we really need delivering the letter in the playthrough for letter bottles that automatically empty.

Anyway, the logic as-written has a bug. Because it requires access to domain proper to obtain the deliver letter event, you wouldn't have that event to be able to reverse through king zora. You can fix this as I suggested above, but you can also get it done by adding a copy of the fast fountain logic on the connection back through king zora.

i think i handled all of this now, can you check if it looks correct to you?

[r0bd0g]

It does look correct. My only reservation is I don't know how I feel about the region and the location sharing a name like that. It's probably fine, right? (Whenever a case came up like this for me I always just put the word "Region" at the end of the region version so I didn't have to ask whether it was fine or not.)

[GSKirox]

Red ice should move correctly now with King Zora. And i renamed the logic region to be safe.