[PS2] Is it possible to cycle through a code list with a button activator?

[Cockbite]

I'm currently playing Castlevania: Lament of Innocence for PS2. I have these fives lines of Raw code. They set the sub-weapon to the Knife/Axe/Holy Water/Crystal/Cross, and only one code can be active at a time.

My goal is to be able to cycle through the five sub-weapons by pressing the L3 button. Is it possible for a button activator to loop through values like this?

20B6482C 000000AA
20B6482C 000000AB
20B6482C 000000AC
20B6482C 000000AD
20B6482C 000000AE

[Demonic722]

I'm not familiar with PS2 hacking, but I know if you can load the value that's currently in the "Sub-Weapon" you could add 0x1 to that value per button press (if you're increasing the value) and another activator for subtracting by 0x1 or adding 0xFFFFFFF. I would say that assembly is the best way to go with cycle codes because it is more powerful with handling it.

[Helder]

Just like the NDS and more modern systems you can, here is a link to our friends at CMP with all the info http://www.codemasters-project.net/g...hp?e=4&catid=2

[Gtlcpimp]

Simple little ASM routine can get it done for ya.

[bungholio]

Just find the "scesifsendcmd" function, change the "jr ra" to jump to this stuff, find the button activator, and it should work perfect.

lui t9, $0??? = button activator address
lhu, t9, $????(t9) = button activator address
lui t8, $0010
ori t6, 0, $FFFD
bne t6, t9, $0016
lbu t7, $FFFF(t8)
bne t7, 0, $0014
lui t9, $00B6
lbu t7, $482C(t9)
ori t6, 0, $0001
ori t5, 0, $00AA
ori t4, 0, $00AE
blt t5, t7, $0004
nop
stb t5, $482C(t9)
jr ra
stb t6, $FFFF(t8)
bge t4, t7, $0004
nop
stb t5, $482C(t9)
jr ra
stb t6, $FFFF(t8)
addiu t7, t7, $0001
stb t7, $482C(t9)
jr ra
stb t6, $FFFF(t8)
stb 0, $FFFF(t8)
jr ra

[Hacc]

I would link you to Pyriel's CodeBreaker wiki to understand the increment/decrement commands in more detail, but I can't access the site at the moment. It may be down or my ISP is to blame.

[bungholio]

The increment code type won't do the trick. You can't tell it not to cycle below "AA" or not to go higher than "AE". Another problem is that you can't control how fast that will cycle through things, so you can tap a button and it might increase over 1000 times. The code I posted fixes those 2 problems. It won't go below "AA", it won't go higher than "AE", and it only goes up a number 1 time when you press L3.

[lee4]

I would link you to Pyriel's CodeBreaker wiki to understand the increment/decrement commands in more detail, but I can't access the site at the moment. It may be down or my ISP is to blame.

Its down

I quickly made a poor mirrior image
http://www.codemasters-project.net/g...ntry.php?e=847

The increment code type won't do the trick. You can't tell it not to cycle below "AA" or not to go higher than "AE". Another problem is that you can't control how fast that will cycle through things, so you can tap a button and it might increase over 1000 times.

most code h@ckers just use the Button activators (D/E) codetype just do this up+L3, down+L3, left+L3, right+L3.

[bungholio]

I don't know why this didn't occur to me before, but this should work perfectly assuming I correctly used the comparison type bits.

E001DFFF 1??????? (This checks if you are holding only L3 and executes the next line if you aren't holding only L3.)
000FFFFF 00000000 (This sets this unused address to 0.)
E1070000 000FFFFF (This checks if that address's value is 0, and if it is it then executes the next 7 lines.)
E006DFFF 0??????? (This checks if you are holding only L3, and executes the next 6 lines if you are holding only L3.)
E00100AA 20B6482C (This checks the value of your sub weapon, and executes the next line if it's value is less than "AA".)
00B6482C 000000AA (It's value was less than "AA", so it is now set to "AA".)
30000001 00B6482C (This adds 1, so you get the next highest sub weapon.)
E00100AE 30B6482C (This checks the value of your sub weapon, and if it is higher than "AE", it sets it to "AA".)
00B6482C 000000AA (It was higher than "AE", so it is now set to "AA".)
000FFFFF 00000001 (This sets a byte to 1 that I'm using to tell the game not to activate this whole code again until you stop holding only L3. Once you stop holding L3, the first 2 lines will set it to 0 which means the game will let you use this again.)

[Hacc]

@ bungholio: I'm aware of those issues. I rarely use this command, though. I'll have to try out your code some time. It should be possible to modify the code handler for the command to customize the speed.

@ lee4: OK. Thanks for the mirror. You have the docs saved offline? I have them saved offline, but wasn't sure if I should upload them.