Oh, bleh. A realization about character dialogue hit me...
There is a function used during character dialogue in-game that copies data from a temporary buffer into a particular location, which is read later when drawing character dialogue on-screen. This function only copies 64 bytes of data. (There might only even be 64 bytes of free space available in this location; I don't know for sure.)
That means that, unless all dialogue in our translation takes less than 64 bytes, I'll be rewriting this function call, and possibly be looking for extra empty space in RAM I can use for a text buffer instead of where IS2 usually reads from. :S
Annoying, but doable...
This ... took way longer than it should have, but it's done enough that I can rebuild all the changes I wrote by hand using this patcher program. ^w^
I feel like adding new bits will go much faster now!
It was as if all of Itadaki Street was screaming in unison, in horror of what had happened to their game.
Then, calmly, everything returned to normal, almost like nothing out of the ordinary had ever happened.
Poking through system menu dialogue for Itadaki Street 2 tonight. This game does ... weird things sometimes... but at least I'm understanding better how its code is structured.
I don't even understand how I made this work, but I made it work...!
I can't do math today. 0x649F + 1 is not 0x649A... >.>;;;;;
Well... I have some things working that weren't before, now! ^w^ Almost all menu dialogue has been formatted and inserted, and things look pretty good!
Some things are still kind of broken, though... ^^;;;;
flashing, glitchy graphics
And some other things, well... ... ... >.>;;;;;;;;
I still have lots of work left, I guess...
I've already fixed one of those bugs (extra spaces in names), which was caused because I didn't bugtest my code when I originally wrote my variable-width font code, and a register got clobbered. ^^;;;
The dialog boxes that I didn't recognize are actually character-specific dialogue that is in a different format from what the game expects there, so that's why they are completely broken. I'll look for those code references later, I guess...
And that flashy, glitch mess at the end... is probably caused by a bank value being wrong, and incorrectly-formatted, unterminated text being drawn, which overflows the tilemap into other parts of RAM, and eventually consumes the entire game...
I don't know exactly how I'll tackle that yet. .-.;;; It's part of a few lines that required extra work, so I left them out when formatting the rest of the menu text...
Well, I fixed what caused everything to break yesterday, and ran into a different, very annoying and also very strange bug:
When playing any game with an AI opponent, after that AI player says anything, the game clears completely wrong memory addresses when removing their dialogue box. This causes all sorts of problems, like corrupt tiles overwriting the map, the HUD disappearing, or the game soft-locking after displaying that dialogue box...
Nothing I added recently directly caused this; it is either a byproduct of something I added in my very first patcher build, or something related to how my patcher itself builds everything into the ROM.
My hand-patched build from months ago doesn't exhibit this bug, so I have no idea what is wrong...
Oh no... I isolated what is wrong here, and I am not happy at all...
It's another instance of this game always expecting its text to be in a very specific bank. It never, ever updates what bank it searches for dialog boxes in, only what address within that bank is being currently used.
That causes problems like this, where another function is looking for where it should draw (or, in this case, clear) a dialog box, but it runs off into who-knows-where and trashes memory...
It didn't happen in my hand-patched build because I hadn't moved any dialog boxes that called this function into expanded ROM space, and my code that handled AI dialogue used the original dialog box definition.
This is so frustrating...
I'm glad I documented what I was doing last here, because I hadn't marked down what needed changing anywhere else...
I'm exhausted today already, but I will try working on this later...
I finished fixing all the code that was calling the SearchDialogDefinition function last night, so ... now I have to go back through each dialog box call, and check the surrounding code for any of the old functions I just replaced, and repoint them properly...
... weh. Tedium. x.x;;
Awesome, rewriting everything that touched SearchDialogDefinitionForA fixed the corruption bug that was crashing games when AI characters said anything! ^w^
... aaaand I immediately found another corruption bug in a dialog window I didn't touch yet. >.<;;;
I don't even know how Konomi's face got corrupted...
Okay, fixed that. (It was a string I had explicitly skipped before, because I didn't know where it was being used.)
Still lots of work to do before I can move on to something else...
Writing a function to center text, since the original function won't work with my new text format, or with a variable-width font...
The original code only used this centering function for displaying street names, but hopefully I can rework it so any arbitrary line of large text can be centered. We'll see... ^.^
It's so weird having code I write mostly from scratch work first try. ^w^
Still working on adding more dialog boxes ^^
"Hmm, why is the vowel extender mark so short in this dialog box? Is there some bug with my text drawing code...?"
"wait a second... that's... not a chōonpu... that's a hyphen..."
My data files now have these lines in them. :|
Why yes, I've been having lots of fun with this project, why do you ask? >.>;;;
random glitch graphics
Ｅｖｅｒｙｔｈｉｎｇ ｉｓ ｆｉｎｅ， ｎｏｔｈｉｎｇ ｉｓ ｗｒｏｎｇ．．．
re: random glitch graphics, translation mishaps
This is what happens when you load up an invalid character ID, and the game tries decompressing random data for their character sprite.
Boom goes the tilemap. And most of WRAM.
While translating venture card-related text, I found a debugging feature left in the game ^w^
okay, after FINALLY getting this code to work, after several hours' worth of debugging, and finding out that the original game's code makes an assumption that doesn't hold anymore with how my code works...
I can finally, finally insert new venture card text.
Itadaki Street 2 tidbit:
The Maharaja (bonus AI character who pays you if he lands on your shop) has his starting cash set to 0x7FFF7FFF (2,147,450,879 G). The game never deducts any of what he pays from his cash total, though, so he effectively has infinite cash. .w.
Another Ita2 tidbit:
There's a bit of unreferenced text near one routine that handles venture cards #61 and #62, which give stock dividends of 10%/20% normally. At first glance, though, this text seems like it would just print garbage tiles on screen...
It turns out this extra text is old enough that it expects a lowercase English font, which isn't in the final game anymore... and it also suggests you originally got paid a flat amount per stock share you owned instead!
In today's "why is this code making the game crash" adventures, spot the bug:
... // Run code here
... It's doing things in the same order! How can this code be broken...? ^^;;;;;
(I have since fixed this bug. ^.^)
Oof, I found at least four bugs in IS2 last night. One of them is a softlock present in the original game... .w.;;;
Spent a day or two this week figuring out what the Japanese bugfix hack for Itadaki Street 2 changed. Turns out there were some really obscure but very strange bugs in the game... .w.;;;
I can't wait to talk about these bugs I've been looking into in Itadaki Street 2, because some of them are very silly... Just have to find enough focus and mental energy that I can finish writing a post about them... .w.;;;
Itadaki Street 2 devlog
Still working, very slowly, on rewriting everything so it works in this new format.
I feel like I'm back where I started 3 years ago...
Itadaki Street 2 devlog
Still not quite working...
The corrupted tiles look different every time, so I guess that's a clue? But why would it be reading from RAM somewhere...?
Itadaki Street 2 devlog
... well, that was a silly mistake. ^.^; It turns out "load value" has a slightly different meaning than "load from address", but the instructions differ by only one character...
In any case, text drawing works again. ^w^
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