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Research: Keeping TMs After Use

The Shiny Ho-Oh

The Shiny Ho-Oh

Golden Bird
47
Posts
13
Years
    • I've been working on my ideal FireRed game for a while now, and I've implemented a ton of stuff from here that is absolutely amazing and makes the game feel so much more fresh, but one of the things I've been thinking about is saving TMs like in the new game. I have no experience scripting for Pokemon, but I do have a background in game programming, so bare with me here.

    There is a function for checking what type of item you use. You could say that if the item used is a TM, after you use one, and it is not an HM, the game would "quietly" add one to your bag. I recently implemented the BW2 Repel System from Pokecommunity, so I know checking items and removing them from the bag/(adding them to the bag) shouldn't be much problem, if you can stop it from displaying "picked up TM##", you should be able to get the basic idea of keeping TMs in the game.

    Thoughts?
     

    ShyRayq

    Unprofessional Unprofessional
    1,856
    Posts
    16
    Years
    • Seen Apr 2, 2024
    Sorry, but the locations that the person found were in Fire Red 1.1

    Since everyone uses FR v.1, I found the locations in that verison.
    They are at 0x124EA0 and 0x124F6C.
     
    Leafbarrett

    Leafbarrett

    76
    Posts
    15
    Years
    • Seen Aug 8, 2021
    So, I notice that all these things are exclusively for Fire Red (as always, because everyone hates Emerald apparently). Does anyone know how I would go about doing this in Emerald?
     

    Jambo51

    Glory To Arstotzka
    736
    Posts
    14
    Years
    • Seen Jan 28, 2018
    ShyRayq said:
    Sorry, but the locations that the person found were in Fire Red 1.1

    Since everyone uses FR v.1, I found the locations in that verison.
    They are at 0x124EA0 and 0x124F6C.
    Click to expand...

    Actually, everyone always uses FireRed 1.0, not 1.1. Not entirely sure why this is, but if you look around the site, you'll see plenty of threads for fixing the bugs left by Game Freak in 1.0. Reason this matters is that 1.0 and 1.1 have differing locations for many of their structures and only the 1.0 locations are known.
     

    Telinc1

    Weirdo Extraordinaire
    168
    Posts
    10
    Years
    • MrDollSteak said:
    Hey great job! How did you remove the quantity?
    This'll be great for Fire Red too.

    Wouldn't happen to be the Mystery Bytes would it?
    Click to expand...
    I just tried it. Setting the first Mystery to 1 removes the quantity, but it sticks the little HM icon in the start of the name and it overlaps with the "No. XX" text. Also, it makes it so that the TM can't be held (which is a good thing, IMO).
     

    Zarafaust

    1
    Posts
    11
    Years
    • Seen Jul 20, 2020
    There seems to be a bug in this method, as soon as you close the the TM case the tm vanishes. It will thus let you use the one tm on multiple pokemon but it can still only be used once.
     
    MrDollSteak

    MrDollSteak

    Formerly known as 11bayerf1
    858
    Posts
    15
    Years
    • Telinc1 said:
    I just tried it. Setting the first Mystery to 1 removes the quantity, but it sticks the little HM icon in the start of the name and it overlaps with the "No. XX" text. Also, it makes it so that the TM can't be held (which is a good thing, IMO).
    Click to expand...

    I thought that would be the case, because I noticed that HMs all were mystery 1, and TMs 0.

    What I may try and do is find the ASM that loads that mystery value stuff, and depending on whether its an actual HM or not, not display the HM logo.

    If I do get around to doing that (and if it works) I suppose I'll put it over here.
     

    LCCoolJ95

    Limited Capacity
    638
    Posts
    14
    Years
    • MrDollSteak said:
    Hey great job! How did you remove the quantity?
    This'll be great for Fire Red too.

    Wouldn't happen to be the Mystery Bytes would it?
    Click to expand...
    it is actually.

    I used the GBA Item Editor. I actually did this months ago, but without actually using a hex editor and changing a few bytes, the TM would not be considered reusable.

    I compared TM50 to HM01 to see what was different between them. A TM uses the Mystery Bytes 0 0, while the HM uses 1 0. I changed all the TMs to 1 0 to see what would happen, and I got what I did in the video. It doesn't show the quantity.

    However, you can still buy more than one TM in the game, through the Poké Marts and the Game Corner.
     
    MrDollSteak

    MrDollSteak

    Formerly known as 11bayerf1
    858
    Posts
    15
    Years
    • LCCoolJ95 said:
    it is actually.

    I used the GBA Item Editor. I actually did this months ago, but without actually using a hex editor and changing a few bytes, the TM would not be considered reusable.

    I compared TM50 to HM01 to see what was different between them. A TM uses the Mystery Bytes 0 0, while the HM uses 1 0. I changed all the TMs to 1 0 to see what would happen, and I got what I did in the video. It doesn't show the quantity.

    However, you can still buy more than one TM in the game, through the Poké Marts and the Game Corner.
    Click to expand...

    Yeah the mystery byte is the same as in Fire Red.
    The only difference is that 01 puts an HM logo in front for fire red.
     

    kearnseyboy6

    Aussie's Toughest Mudder
    300
    Posts
    15
    Years
    • Seen Jun 22, 2019
    I have tried expanding the TM's but so far I have had no luck. Repointing and expanding simply doesn't work... I think
     
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