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Author Topic: PhantasyStarII divide by two  (Read 2655 times)
michael_a
Guest
« on: October 28, 2006, 02:27:45 am »

hello everyone,

This is my first time posting, and frankly will likely be my last as well (well thread wise at least)

basicly PhantasyStarII (a megadrive/genesis game) has this weird quality control type glitch in it (well i would call it a glitch, though it was never removed until maybe the saturn port)  ...where all two handed weapons have an effective attack power that is actually half the rated attack power of the weapon...

the ramifications of this appear to be intentional, but at the same time numbers wise the game seems to be balanced as if that is not the case (and halving the attack power makes no rational sense) ...it looks like half the dev team hypotheticly at least thought this was a good idea, and the other half didn't or something, and the two halves weren't communicating. in the end the gameplay is totally broken. which is a real shame cause i really adore the PSII universe, but it just sucks to play.

the best weapons, and the weapons of the hero character are all two handed weapons. but because of the "glitch" two handed weapons are pretty much useless having only half of the hit power of dual wielding single handed weapons while not allowing the use of shields.

i have no idea how the ClassicPS community missed this, but i've been trying to make it known... for example i was responsible for the disclaimer at the bottom of the table on this page:

http://www.phantasy-star.net/psii/psiiweapons.html



i have setup patches for PSX games before, by disassembling the executible and substituting instruction opcodes as desired. but just googling around, i couldn't really find any insight into how to best go about it for a megadrive rom. i'm assuming there must be a logic switch in the game, and all that would be necessary would be to find all the divide by two instructions and change the immediate submask of the opcode to one rather than two (there can't be that many of them)


i could manage myself i imagine with a nudge in the right direction, but it seems simple enough that maybe it would be easier for someone with ample experience to just cook up the little patch and take the credit themselves. either way is fine by me. i guess it might be a little trouble to download the roms (japanese/english -- i play the japanese rom myself)


PSII is a classic game that deserves better. i'm positive the game would only be vastly improved by the modification. it wouldn't make the game any easier, it would just balance out all of the best weapons to be as good as the worst??? (weird huh)

in any case, any support would be appreciated.

sincerely,

michael


EDIT: on second thought more likely, the power of the two handed weapons might be doubled in the stat screen (or something else) ...might have to find where the attack power of the weapons are loaded from the memory and change all of those. then try to find all the places like in the stat screen where the numbers need to be fudged to line up (again just divide by one instead)

« Last Edit: October 28, 2006, 02:42:38 am by michael_a »
Kitsune Sniper
Guest
« Reply #1 on: October 28, 2006, 04:08:58 am »

There's a Gens variant created by z80Gaiden which as a tracing system. You might want to look at it.
michael_a
Guest
« Reply #2 on: October 28, 2006, 05:03:02 am »

any idea where to look for it?

i'm assuming it has disassembly as well.

anyone idea what to do about patching?
KaioShin
Guest
« Reply #3 on: October 28, 2006, 05:10:31 am »

It's right here on the site

When you have modified the game you can make a NINJA or IPS patch by comparing the modified ROM with the original one. The tools needed for that are all in our database. There is also a huge wealth of information here in the Documents and the Getting Started section.
We can't explain everyone here how to do everything, try to do it yourself using the information we provide and then come back with specific questions if you still need help.
Piotyr
Guest
« Reply #4 on: October 28, 2006, 12:53:00 pm »

I suggest combineing this work with the retranslation patch they have out there. The game is so much better retranslated so very well.
I am sure the orignal auther of the patch will mind you fixing a bug in the game with her translation in place(I think its a her not sure.)
michael_a
Guest
« Reply #5 on: October 28, 2006, 04:54:55 pm »

sure ok, i'm sure i can figure it out. i'm just miserable when it comes to finding new stuff on the internet out of nowhere (plus i'm really a pretty busy guy) ...once i get some links to hop around on though its no problem. it easiest to just ask (well for me at least)

if anyone knows about any PSII patching projects already underway and can provide contacts or other relevant info, by all means please don't hold back.
RedComet
Guest
« Reply #6 on: October 28, 2006, 05:10:59 pm »

I doubt there's any PS2 projects going on. I know I'm working on a Genesis game and I think KingMike might be, but that's the only thing in the way of Genesis projects (except the Sonic community) that I know of.
KaioShin
Guest
« Reply #7 on: October 28, 2006, 05:31:36 pm »

DaMarsMan is working on DQV PS2.
RedComet
Guest
« Reply #8 on: October 28, 2006, 06:18:08 pm »

I meant Phantasy Star 2. Wink
KaioShin
Guest
« Reply #9 on: October 29, 2006, 04:28:26 am »

Quote from: RedComet on October 28, 2006, 06:18:08 pm
I meant Phantasy Star 2. Wink

  Shocked

Ups, I should have known since the whole thread is about Phantasy Star  :laugh: That's what you get for opening 5 new threads in tabs and jumping right to the last posts  Roll Eyes
Piotyr
Guest
« Reply #10 on: October 30, 2006, 12:14:40 am »

Quote from: michael_a on October 28, 2006, 04:54:55 pm
sure ok, i'm sure i can figure it out. i'm just miserable when it comes to finding new stuff on the internet out of nowhere (plus i'm really a pretty busy guy) ...once i get some links to hop around on though its no problem. it easiest to just ask (well for me at least)

if anyone knows about any PSII patching projects already underway and can provide contacts or other relevant info, by all means please don't hold back.

http://www.romhacking.net/trans/72/
There ya go the only ps2 patching project. Its complete and beautiful
Who ever called a claw a bar anyway?
michael_a
Guest
« Reply #11 on: October 30, 2006, 12:31:08 pm »

yeah, the claw/bar thing is pretty stupid. sometimes it seems like the developers/localizers just didn't give a damn about this game. the world is still classic though.

EDIT: just from the screenshots the retranslation doesn't look perfect, but does anyone know where to find the original text file script that was mentioned? i tried google, but i'm really bad at finding stuff like that.
« Last Edit: October 30, 2006, 12:44:59 pm by michael_a »
Gosun
Guest
« Reply #12 on: October 30, 2006, 03:02:11 pm »

http://www.maxlow.net/phantasystar/psii/ps2jtrans.html
michael_a
Guest
« Reply #13 on: October 30, 2006, 08:03:05 pm »

Quote from: Gosun on October 30, 2006, 03:02:11 pm

thanks Grin
michael_a
Guest
« Reply #14 on: October 31, 2006, 01:47:21 pm »

Quote from: KaioShin on October 28, 2006, 05:10:31 am

it might be my decompression utility (ZipGenius6) ...but the emulator with the tracer in the suggested URL keeps telling me it is not a valid RAR archive.

can anyone on the staff confirm that its good and let me know what app you are using to unrar it?
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