JPAN
pokemon rom researcher
- 104
- Posts
- 15
- Years
- Seen Jul 2, 2016
I come here today with a small tutorial on how to change the multi-choice options to the ones you need.
I will assume in this tutorial that you have at least an hex-editor and a way to find free space.
First of all, open your rom on any hex editor and go to offset 0x3e04b0. This is the pointer for the table containing all multi-choices.
Those pointers are laid out in this format:
xxxxxxxx yy000000
where
x = pointer
y = number of choices
If yy is greater than eight, the box will not display correctly, appearing only a small glitched box on its place.
View attachment 44629
At the adress pointed, there is a table with at least an equal number of pointers, adressing strings. The layout is similar to the previously presented, xxxxxxxx 00000000. Any different and the game crashes.
To make things easier, we'll use a script editor (in the picture, I used XSE) to compile the choice strings into the ROM.
View attachment 44630
Write the offsets where each string is stored and reverse them to pointer format (ex: 0x800015 becomes 15 00 80 08), then search for a place to put this list. You will need (8 x number of strings) bytes of free space.
Afterwards, insert the string offsets in the desired order, each pointer followed by eight zeros.
Finally, replace one of the existing multichoice pointers with your own. In the example, I chose multichoice 0x1 previously the Eevee and evolutions multichoice from Bill's dialog.
View attachment 44631
In the end, Using that set will result in one of these:
View attachment 44632
And so concludes this tutorial. Mind this tutorial limits you to the 65 existing in-game multichoices.
To add more Multichoice boxes, one can copy the existing table to another location and add choices there. Afterwards change the pointer at 0x09cb58 to the one your list is in. It will allow you to surpass the 0x40 limit on the multichoice command.
I hope this tutorial will help you with your hacking.
I will assume in this tutorial that you have at least an hex-editor and a way to find free space.
First of all, open your rom on any hex editor and go to offset 0x3e04b0. This is the pointer for the table containing all multi-choices.
Those pointers are laid out in this format:
xxxxxxxx yy000000
where
x = pointer
y = number of choices
If yy is greater than eight, the box will not display correctly, appearing only a small glitched box on its place.
View attachment 44629
At the adress pointed, there is a table with at least an equal number of pointers, adressing strings. The layout is similar to the previously presented, xxxxxxxx 00000000. Any different and the game crashes.
To make things easier, we'll use a script editor (in the picture, I used XSE) to compile the choice strings into the ROM.
View attachment 44630
Write the offsets where each string is stored and reverse them to pointer format (ex: 0x800015 becomes 15 00 80 08), then search for a place to put this list. You will need (8 x number of strings) bytes of free space.
Afterwards, insert the string offsets in the desired order, each pointer followed by eight zeros.
Finally, replace one of the existing multichoice pointers with your own. In the example, I chose multichoice 0x1 previously the Eevee and evolutions multichoice from Bill's dialog.
View attachment 44631
In the end, Using that set will result in one of these:
View attachment 44632
And so concludes this tutorial. Mind this tutorial limits you to the 65 existing in-game multichoices.
To add more Multichoice boxes, one can copy the existing table to another location and add choices there. Afterwards change the pointer at 0x09cb58 to the one your list is in. It will allow you to surpass the 0x40 limit on the multichoice command.
I hope this tutorial will help you with your hacking.
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