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Research: FireRed Pokédex Hacking

GoGoJJTech

GoGoJJTech

(☞ﾟヮﾟ)☞ http://GoGoJJTech.com ☜(ﾟヮﾟ☜)
2,475
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11
Years
    • It must be the byte change messing with the loading routine for moves.
     

    Jambo51

    Glory To Arstotzka
    736
    Posts
    14
    Years
    • Seen Jan 28, 2018
    LusoTrainer said:
    Is there a way to change the values of Height and Width to metric units? Is there any limitation in space?
    Click to expand...

    They're stored in the game in metric units and converted to imperial at run time. You would simply have to turn off the conversion routine (pretty easy since it's just nop-ing a few opcodes) and change the strings which are at the end of them (the lbs and the ' " things).

    Granted, all of the above requires knowing where this code is, but it's certainly possible to do.
     

    chaosakita

    16
    Posts
    11
    Years
    • Seen Nov 1, 2014
    Is there any way to increase the number of Pokemon in the game without increasing the number of dex entries? I would like to have more Pokemon similar to the ????? in between Celebi and Treecko.
     

    Faintx

    6
    Posts
    11
    Years
    • Seen Aug 20, 2013
    Hey guys, link in the OP was down, how do you add the 4th and 5th gen pokedex entries to a fire red rom? Can't figure out how! Or if someone can link me to a patch or something that adds in all of the new pokedex entries, that'd be appreicated! Thanks.
     
    LusoTrainer

    LusoTrainer

    510
    Posts
    11
    Years
    • Seen yesterday
    Jambo51 said:
    They're stored in the game in metric units and converted to imperial at run time. You would simply have to turn off the conversion routine (pretty easy since it's just nop-ing a few opcodes) and change the strings which are at the end of them (the lbs and the ' " things).

    Granted, all of the above requires knowing where this code is, but it's certainly possible to do.
    Click to expand...

    And does anyone know where the conversion routine is located? Surely someone must have found it.
     

    tanledesigner

    12
    Posts
    10
    Years
    • Seen Jan 21, 2014
    setseen: ldr r1, newblock
    there2: add r1, r1, r4
    ldrb r2, [r1, #0x0]
    add r0, r6, #0x0
    orr r0, r2
    strb r0, [r1, #0x0]
    b end Something wrong here i guess

    0x7464C
    0x7471C
    0x7477C
    0xCB160
    0xCB16C
    0x1037D4
    0x103870
    0x104C28

    Repeat i again
     
    Last edited:

    Daniagnargjr

    3
    Posts
    10
    Years
    • Seen Jun 21, 2014
    Jambo51 said:
    When writing to the Pokémon's data, you risk changing something which should have an effect in the checksum. Without updating this checksum, the Pokémon will instantly become a Bad Egg.

    My way of doing the formes avoids this potential problem by not writing to that area of data. It simply keeps the same Pokemon, calling the stat recalculator if necessary. It also takes much less space in terms of seperate data.

    The code for gender differences is mixed in with the formes, since I reasoned that they were technically a variation on formes. Like Arceus however, nothing is directly stored to the Pokémon data which determines its gender, it is simply calculated on the fly as necessary. The Sprites are missing however.

    Actually, the EGG is sprite 412. But that's nitpicking. To answer your question, I inserted a little bit of extra code at the sprite getting locations, with checks against the Sprite number and the Species ID (both are in the registers at this stage in FR). Simply, If it's Unown, I load a different table offset, and subtract the necessary number of sprites to make it fit, and if it's the EGG sprite ID, I check if the Pokémon the sprite request came from is an egg. Even if it is a Burmy AND an EGG, it will automatically display the EGG sprite until it hatches.

    More complicated than necessary, but that's what happens when you forget that the Unown sprites (and EGG sprites) follow directly on from the "Normal" sprites.

    EDITED TO ADD: I managed to get formes to recalculate stats when activated based on the current forme.
    Click to expand...



    I just expanded the pokedex of Chinese language Fire Red to 493, all pointers of that translation are just same as US version.
    After solving the saveblock problem, I found that the entries of the 412-493 which burmy start becoming bad egg (course I do have all of pokedex entries), it looks like mess up with the egg sprite and unknown...

    Said it is possible to recognize EGG/unknown sprite ID with extra code at the sprite getting locations
    Could you show me how to do that?
    It will help me a lots...

    Others like basestats or front pics work fine...(which just left that bag egg pokedex)


    And to generate different Unknowns, why don't just make some script to do wildbattle with different unknowns' index id...
    I tried it, and it works fine, but you need to repoint the moveset and basestats for them ,so it will be counted as different 28 unknowns
    and check the caught flags of them would be possible to achieve DPP storyline...
     
    Last edited:
    GoGoJJTech

    GoGoJJTech

    (☞ﾟヮﾟ)☞ http://GoGoJJTech.com ☜(ﾟヮﾟ☜)
    2,475
    Posts
    11
    Years
    • Daniagnargjr said:
    I just expanded the pokedex of Chinese language Fire Red to 493, all pointers of that translation are just same as US version.
    After solving the saveblock problem, I found that the entries of the 412-493 which burmy start becoming bad egg (course I do have all of pokedex entries), it looks like mess up with the egg sprite and unknown...

    Said it is possible to recognize EGG/unknown sprite ID with extra code at the sprite getting locations
    Could you show me how to do that?
    It will help me a lots...

    Others like basestats or front pics work fine...(which just left that bag egg pokedex)


    And to generate different Unknowns, why don't just make some script to do wildbattle with different unknowns' index id...
    I tried it, and it works fine, but you need to repoint the moveset and basestats for them ,so it will be counted as different 28 unknowns
    and check the caught flags of them would be possible to achieve DPP storyline...
    Click to expand...

    Well the 'dex slots for 413-65535 were not supported in Gamefreak's original coding. Instead it uses 412 as the last # possible (changeable, don't know how)
    So there's a limit(s) on 412 which we must find to achieve victory. The 649 patch did, but I can't figure out just HOW. And Jambo51 quit hacking a while ago, so he's not helping us.
     
    Mr.Mako

    Mr.Mako

    Resident Edgelord Troll
    162
    Posts
    10
    Years
    • Seen Aug 10, 2023
    Darn I was hoping this would be finished because that would've been a dream come true for the hack I'm working on since it wouldn't be hard to extend it to include X/Y pokemon, but alas all is for naught since the only public release is no longer available. Here's to hoping that someone will either figure it out or recreate it.
     

    HidoranBlaze

    252
    Posts
    11
    Years
    • Seen Jul 6, 2019
    Mr.Mako said:
    Darn I was hoping this would be finished because that would've been a dream come true for the hack I'm working on since it wouldn't be hard to extend it to include X/Y pokemon, but alas all is for naught since the only public release is no longer available. Here's to hoping that someone will either figure it out or recreate it.
    Click to expand...
    Dude you do realize expanding Pokemon is a thing now right? Doesn't and Gogo were able to find a way to expand the Pokedex, and Karatekid coded it into his Gen III Hacking Suite. Just use that tool, and expand the # of Pokemon. Done.
     
    Last edited:
    GoGoJJTech

    GoGoJJTech

    (☞ﾟヮﾟ)☞ http://GoGoJJTech.com ☜(ﾟヮﾟ☜)
    2,475
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    • HidoranBlaze said:
    Dude you do realize expanding Pokemon is a thing now right? Doesn't was able to find a way to expand the Pokedex, and Karatekid coded it into his Gen III Hacking Suite. Just use that tool, and expand the # of Pokemon. Done.
    Click to expand...

    Yeah man we got this figured out not too long ago :D
    But you should still know the technical part behind it
     
    Mr.Mako

    Mr.Mako

    Resident Edgelord Troll
    162
    Posts
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    • Seen Aug 10, 2023
    I apologize for seeming like an idiot, but I'm new to Pokemon hacking so I didn't know.
     
    Xencleamas

    Xencleamas

    457
    Posts
    10
    Years
    • Seen Apr 9, 2024
    So, I have expanded the Kanto Pokedex into 256 entires. Do I still need to fix and change the flags for it?
     

    TheRabbit

    Banned
    69
    Posts
    9
    Years
    • Seen Jan 1, 2015
    I saw someone ask this on an earlier page but he didn't really get a clear answer.

    Is there anyone who could shed some light on how I would make it so the game designer who gives the diploma recognizes 251 as a completed national dex instead of 386. It's the final thing I need to do for my hack. Anyone?
     

    anonyboy

    Pokemon Aerial Emerald Creator&Pokemon Hybrid Co-C
    286
    Posts
    10
    Years
    • TheRabbit said:
    I saw someone ask this on an earlier page but he didn't really get a clear answer.

    Is there anyone who could shed some light on how I would make it so the game designer who gives the diploma recognizes 251 as a completed national dex instead of 386. It's the final thing I need to do for my hack. Anyone?
    Click to expand...

    there is a tut for it in pho, search in there ...
     

    jAvAcOlA

    Banned
    152
    Posts
    15
    Years
    • Seen Feb 22, 2015
    I'm looking to do two things with my pokedex:
    1) Effectively move Deoxys down to 252, so that it'll appear directly after Celebi.
    2) Change its number so that instead of 252, it has question marks.

    How can I do this and what tools would I need? Thanks.
     
    Lunos

    Lunos

    Random Uruguayan User
    3,114
    Posts
    15
    Years
    • HidoranBlaze said:
    Dude you do realize expanding Pokemon is a thing now right? Doesn't and Gogo were able to find a way to expand the Pokedex, and Karatekid coded it into his Gen III Hacking Suite. Just use that tool, and expand the # of Pokemon. Done.
    Click to expand...

    I would love to take this route, but G3HS crashes whenever I click on the "Expand Pokemon" button :/
    Is there some fix for it? :/
     
    GoGoJJTech

    GoGoJJTech

    (☞ﾟヮﾟ)☞ http://GoGoJJTech.com ☜(ﾟヮﾟ☜)
    2,475
    Posts
    11
    Years
    • Lunos said:
    I would love to take this route, but G3HS crashes whenever I click on the "Expand Pokemon" button :/
    Is there some fix for it? :/
    Click to expand...

    Why are people still using buggy, unfinished, alpha tools?
     
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