Button remapping (theory)

I had an idea while messing with ACWW. I found the location in the game's code where it loads from 0x4000130. Well, I thought, what if you make it load the button values from another address? And simply write the buttons you want to be pressed to that address.
You can have it load from 0x4000130 until a certain code is activated and then load from an address you choose.
Would this be possible? Or am I wasting my time?

0x20E7EC0 should point to the "gba buttons" address in ACWW
normally it'd be 0x20E7EC0 04000130
you can simply replace 04000130 with any address, right?

Edit: i can confirm it does work XD I just tried writing the code for "Down" to 0x22BF110, made the game load from that and my character started moving down on it's own.

Theoretically this can be used to make "auto" codes. Like a code that teleports you to a weed, simulates the B button being pressed, pulls the weed, pauses just long enough to do the "pull weed" animation, and teleports to the next weed and so on. All on it's own.

I'll work on this more when I get home tonight, this is what happens when you're bored and have too much free time -.-

Very cool. You could write automated weed-pulling codes. Although, you could also write a code to just remove weeds. To each their own...

Well...
too bad it won't work on the actual game. I hate it when something works on an emulator and then you make a hack and find out it doesn't work on the actual game...
Unless there's a pointer somehow? I have no idea.

Auto-Weed puller (emulator only >_>)

press L+R and see what happens

Code:

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023FF090 012FFF11
E0000000 00000191
E59F0170 E59F3178
E59F5178 E5DF117C
E3510001 0A000047
CA00004E E1D020B0
E3120C03 112FFF1E
E3A01001 E5CF115C
E5830000 E3A02000
E59F0140 E3A01A01
E2411001 E0D030B2
E353001F 0A00000D
E3530021 BA000001
E3530024 DA000009
E2822001 E2511001
5AFFFFF5 E3A01000
E5CF1118 E59F00FC
E59F3104 E5830000
E5850000 E12FFF1E
E3A01021 E1A01601
E1A05001 E3A03020
E1A03403 E3A04002
E1A04384 E3A00000
E1520004 BA000002
E0422004 E2800001
EAFFFFFA E1A04000
E3A00000 E3540004
BA000002 E2444004
E2800001 EAFFFFFA
E0000093 E1A00200
E0855000 E0040493
E1A04204 E0811004
E3A00000 E3520010
BA000002 E2422010
E2800001 EAFFFFFA
E0000093 E0855000
E0020293 E0811002
E59F005C E5900000
E3A020A9 E1A02182
E0400002 E5801000
E5805008 E12FFF1E
E3A01002 E5CF104C
E28F0044 E5830000
E5850000 E3A02C02
E1CF23B6 E12FFF1E
E1DF12BE E2511001
4AFFFFB0 E3510C01
05830000 05850000
E1CF11B6 E12FFF1E
04000130 021C6DEC
021E3124 020E7EC0
02000E24 0000FFFD
00000000 00000000
023FF090 E3520003

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ill convert it to THUMB to shorten it soon
and fix up the algorithm
but there's not really a point anymore...

That was heck to make by the way...most complex code I've ever made. And it doesn't work on the actual game.

Why would it only work on the emulator? Slightly different addresses? Anyway... I guess thats where Toolkit comes in rather handy...

If you wanted to remap, you could have the game button routine look for your custom address and have a constant loop checking the 4XXXXXXX address (i/o keys I don't know off the top of my head) to see which buttons are pressed. Your code would say if A is actually pressed, have it say B is pressed at your custom address. Stuff like that. Wouldn't be too complicated at all to put together.

Quote:

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Originally Posted by siestacat

Why would it only work on the emulator? Slightly different addresses? Anyway... I guess thats where Toolkit comes in rather handy...

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I'm not sure...I'm guessing switching where it loads the button address is "too powerful" for the regular game.
I had it simply loading from a line in my ASM routine, which works fine in the rom but on the actual game it freezes for some reason...
So I'll have to find another method. Hopefully I won't have to dig around too much.

Quote:

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If you wanted to remap, you could have the game button routine look for your custom address and have a constant loop checking the 4XXXXXXX address (i/o keys I don't know off the top of my head) to see which buttons are pressed. Your code would say if A is actually pressed, have it say B is pressed at your custom address. Stuff like that. Wouldn't be too complicated at all to put together.

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That probably wouldn't work on the actual game either. I'm thinking of looking for the "cmp if B is pressed" and just setting the compare to "true" when I want to pull a weed, and setting it back when I pulled it.
That way nothing is really changed other than a single instruction so it shouldn't cause problems on the actual game.
My routine changes the "IOKeys" from 0x4000130 to whatever address every half second and then back. So it simulates B being pressed and released over and over again.

Edit:

Code:

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020E7E4C E1D120B0 - load from hardware buttons  ldrh r2, [r1]

020E7E4C E3E02002 - fake "B" being pressed        mvn r2, #2

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I need a break before I get carried away with this. I'll work on other games for awhile XD

Edit: i got it to work on the actual game XD

Code:

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023FF090 012FFF11
E0000000 000000D4
E28F2001 E12FFF12
482BA431 4B2D4D2E
290178A1 DC45D03E
24308802 42220124
A42BD149 70A12101
2200601D 21FF4824
310F0109 2B1F8803
2B21D00A 2B24DB01
3201DD06 39013002
2100D5F4 477070A1
03092121 23201C0D
24FF021B 40220A10
25031C04 402C08A0
43581C0D 182D0100
0124435C 240F1909
40220910 182D4358
1889435A 6800480D
00D222A9 60011A80
47706085 70A12102
6018480C 01122220
47708022 39018821
2210D4BC 80210112
D1004291 4770601D
04000130 021C6DEC
021E3124 020E7E4C
E1D120B0 E3E02002
00000000 00000000
023FF090 E3520003

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I'll work on shortening it...Not that anyone would probably use this code but it's awesome.

y'know, i would like to see the original code by Jay FNG work online...

Quote:

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Originally Posted by Lord Was

y'know, i would like to see the original code by Jay FNG work online...

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That's impossible. Well, of course I thought this code was impossible a year ago, so..
maybe wait a year and I might be good enough to mess with the wifi packets XD

Not bad... love to see the source later ;P

Quote:

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Originally Posted by Lord Was

y'know, i would like to see the original code by Jay FNG work online...

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Stop giving Jay FNG credit for anything.

Quote:

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Originally Posted by Vash

Stop giving Jay FNG credit for anything.

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he didn't create it??

Quote:

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Originally Posted by Lord Was

he didn't create it??

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We won't get into the history lesson, but basically he stole the search and replace from DsPet.

oh ok, thanks for clearing that up.