[Fire Red]: Class Based Trainer Battle Music

Alquimia2101 · Feb 26, 2015

Jambo51 said:
I don't know what the second half of that post actually means, as to the title screen freezing (or earlier) that could only happen if there's some sort of conflict with another existing hack, or if you screwed up somewhere, since this is the same code that runs in LC (and runs fine, I may add).

Hello happens to me something like that in my case only begins the battle but no music.

Bela · Jun 27, 2015

Touched wrote an asm routine for me that lets you play custom victory music for a Trainer based on its class, mimicking the format of Jambo's routine here. I'm posting it here because he's too lazy to do it. =P

Code:

.thumb
.align 2

main:
    lsl r0, r1, #2
    add r0, r1
    lsl r0, #3
    add r0, r2
    ldrb r0, [r0, #1]

    mov r1, r0
    push {r1-r3}
    bl search
    pop {r1-r3}
    cmp r0, #0
    bne play_custom

    mov r0, r1
    ldr r1, =(0x0801570E + 1)
    bx r1

play_custom:
    ldr r1, =(0x080722A0 + 1)
    bl linker
    ldr r1, =(0x0801576E + 1)
    bx r1

linker:
    bx r1

search:
    ldr r3, =0xFEFE

    ldr r2, victory_table

search_loop:
    ldrh r1, [r2]
    cmp r1, r3
    beq search_return_none

    cmp r1, r0
    beq search_found

    add r2, #4
    b search_loop

search_return_none:
    mov r0, #0
    b search_return

search_found:
    ldrh r0, [r2, #2]

search_return:
    bx lr

.align 2
victory_table: .word 0x08AAAAAA

So, following what Jambo did with his routine, you would create a table in this format:

[Trainer Class - Byte][00 - Byte][Song to play - Half-Word]

So, for example, say you want the Team Aqua class to have track 0x130 as the victory theme to play when you beat them. You would put the following set of bytes into the table:

Code:

03 00 30 01

As before, you must do this for every class you wish to have custom music.

When you're done with this, place:

FE FE at the end of the table (as opposed to FEFE0000 like Jambo had you do with his routine). So to finish the example, it would be:

Code:

03 00 30 01 FE FE

Take the offset of your table and replace it with the 0x8AAAAAA you see in the routine. So if your table offset is say 0x845670, you would write 0x8845670 into the routine instead.

Now you need to hook your routine so the game will read it. To do this, go to offset 0x15704 and write the following:

Code:

00 48 00 47 XX+1 XX XX 08

Where the XXs are your routine +1. So in our example, you would put the following at 0x15704:

Code:

00 48 00 47 71 56 84 08

And there you go!

noirhaya · Jun 25, 2018

How can I add more than one class trainer battle music at the same time?

pokemonrater79 · Feb 12, 2019

I wanted to do this with Team Rocket as well as a few other trainer classes. When I tried doing this with the Rival battle music after the Team Rocket one, it still played the normal trainer theme. Is it possible to do this with more than one theme at a time?

/JASHIN/ · Apr 30, 2019

If you're still having problems adding extra classes or you don't understand ASM watch this tutorial. Hex editing knowledge is all you need since the ASM is already compiled here:
https://www.youtube.com/watch?v=iM0PZN1u4GU

Child Amnesiac · May 14, 2019

/JASHIN/ said:
If you're still having problems adding extra classes or you don't understand ASM watch this tutorial. Hex editing knowledge is all you need since the ASM is already compiled here:
https://www.youtube.com/watch?v=iM0PZN1u4GU

I followed your tutorial to the letter, but every time I trigger a battle: the music cuts out, and the game locks up. What am I doing wrong here? Is it my computer?

/JASHIN/ · May 14, 2019

Hi, are you still having issues?

Child Amnesiac · May 14, 2019

/JASHIN/ said:
Hi, are you still having issues?

No, I fixed it.

Child Amnesiac · May 17, 2019

I tired it with another Rom, the game locked up. But the music didn't cut out.
I'm going to try a clean ROM this time.
Edit: I don't think it's going to work, I think ASM works only when it wants to.
Edit 2: I think I found the problem, I forgot a 08

/JASHIN/ · May 22, 2019

Glad it's working!

GuitarHeero · Jun 10, 2019

Can i do this with another class?

i plan on changing my..

rival class,
legendary class,
elite four class

i also want to add champion theme for hoenn and sinnoh.

is it possible to edit all trainer classes or just one?

Oofachu320 · Oct 26, 2019

What is the byte code for the Pokemon Trainer class?

JK1012 · Mar 9, 2020

i followed the guide and the custom music worked just fine, but every other battle theme in the game including wild battles are silent and have no music

Chibi54 · May 27, 2020

What program did you use?

Ryurs · May 4, 2021

Hi, I was wondering if this routine could be configured for "emerald". I tried it myself (I have very basic ASM knowledge, but I don't know how to write asm scripts or anything, just compile, offsets...), but this is not like other routines where looking for offsets depending on which roms you can make the transition.

I am surprised at the same time that this is not something more generalized (it is an old publication and there is not much more information on the internet about the topic of music according to the kind of trainer), since it seems to me something that offers a very important added value in the game you are creating.

I would appreciate any kind of help, best regards.

TaviTurnip · Aug 9, 2021

Ryurs said:
Hi, I was wondering if this routine could be configured for "emerald". I tried it myself (I have very basic ASM knowledge, but I don't know how to write asm scripts or anything, just compile, offsets...), but this is not like other routines where looking for offsets depending on which roms you can make the transition.

I am surprised at the same time that this is not something more generalized (it is an old publication and there is not much more information on the internet about the topic of music according to the kind of trainer), since it seems to me something that offers a very important added value in the game you are creating.

I would appreciate any kind of help, best regards.

Did you ever figure this out? I just came to this thread to refresh myself on class music and attempt it in Emerald myself, and have gotten held up on the very first step. I figured I could reverse engineer the instructions from FireRed to Emerald, but the HEX string that you replace [00 28 04 D0 85 20 40 00 39 E0 <-- at offset 0x43FF2] does not resemble anything inside Emerald's code, nor does it seem to contain a pointer to an offset itself, so I've immediately become lost lol

I'm sure this technology can be used for Hoenn games but at least at the time of posting it's currently over my head, ahaha.

ShinyTillDawn · Oct 17, 2022

I'm wondering about an Emerald port, too.

I think the place to insert bytes would be around here:

Code:

06E42C:
    push  {lr}
    ldr   r0, [pc, <06E444>]
    ldr   r1, [r0, #0]
    mov   r0, #128
    lsl   r0, r0, #5
    and   r0, r1
    cmp   r0, #0
    beq   <06E448>
    mov   r0, #240
    lsl   r0, r0, #1
    b     <06E646>

AtecainCorp. · Nov 7, 2022

Is there any way to skip trainer class part and use just only regional part?

Moonshake · Jan 18, 2024

Hi! i tried applying this routine to change the rival battle theme, but i don't know why, it didn't work

is it possible to change the rival or is it hard coded?

Edit: i don't remember what i changed but it works now

[Fire Red]: Class Based Trainer Battle Music

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Alquimia2101

Bela

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noirhaya

pokemonrater79

/JASHIN/

Child Amnesiac

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/JASHIN/

Child Amnesiac

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/JASHIN/

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JK1012

Chibi54

Ryurs

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