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  5. Development [FR] Inverse Battles

Research & Development Got a well-founded knack with ROM hacking? Love reverse-engineering the Pokémon games? Or perhaps you love your assembly language. This is the spot for polling and gathering your ideas, and then implementing them! Share your hypothesis, get ideas from others, and collaborate to create!

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  #1    
Old December 4th, 2013 (4:51 PM).
DoesntKnowHowToPlay's Avatar
DoesntKnowHowToPlay DoesntKnowHowToPlay is offline
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    In XY, there is a new type of battle known as the Inverse Battle. In this mode, type match-ups are reversed- moves that are normally super-effective become ineffective, and moves that are normally resisted or would have no effect become super-effective. I did some poking at the type chart code recently and found that it's actually quite easy to implement these in FR.

    "But that's easy! Just edit the well-documented type chart so every match-up is backwards!"

    That isn't what this does. This hack hijacks the code that reads the type chart to make the game use the inverse of what's there. This means you can use a flag to have hacks with both regular and inverse battles.

    The routine is as follows:

    Code:
    .align 2
.thumb
.thumb_func
push {r4, r5, lr}
mov r4, r0
mov r0, #0x02
lsl r0, #0x8
mov r1, #0x3D
add r0, r1
bl FlagCheck
cmp r0, #0x0
beq End
cmp r4, #0x0
beq SuperEffective
cmp r4, #0x5
beq SuperEffective
cmp r4, #0x14
beq Ineffective
b End

SuperEffective:
mov r4, #0x14
b End

Ineffective:
mov r4, #0x5

End:
ldr r5, .damageAddr
ldr r0, [r5, #0x0]
mul r0, r4
ldr r1, .returnAddr
bx r1

FlagCheck:
ldr r2, .flagAddr
bx r2


.align 2
.returnAddr: .word 0x0801e77d
.flagAddr: .word 0x0806e6d1
.damageAddr: .word 0x02023d50
.end
    You can insert it anywhere. To call it, insert 00 49 08 47 at x1E770, followed by a pointer to where you inserted the method + 1. (For example, I inserted the method at x170900- I would put 00 49 08 47 01 09 17 08 at x1E770).

    This code ties the Inverse Battle rules to flag x23D. If flag x23D is set, battles will use the Inverse Battle ruleset- otherwise they will work normally. If you want to use a different flag, you can change it quite easily by adjusting the values on the sixth and eighth lines. Note that in vanilla FireRed, flag x23D is used by the Pokeflute- if that script is still in the game you will want to pick a different one.
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      #2    
    Old December 4th, 2013 (7:25 PM).
    MrDollSteak's Avatar
    MrDollSteak MrDollSteak is offline
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      That's fantastic Doesn't!

      A very useful feature for hacks looking for different things!

      You never cease to amaze me!
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        #3    
      Old December 5th, 2013 (12:46 AM).
      Sniper's Avatar
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        Awesome, will this be able to implement in Emerald as well?
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          #4    
        Old December 5th, 2013 (2:08 PM).
        esperance's Avatar
        esperance esperance is offline
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        Ah, very nice.

        Quite an impressive feature despite its simplicity. Well done.
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          #5    
        Old December 5th, 2013 (3:34 PM).
        xGal xGal is offline
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          This routine just gave me an idea for my hack. Thanks for the routine! I will give you a credit if i will use it .
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            #6    
          Old December 5th, 2013 (6:24 PM).
          Kawaii Shoujo Duskull's Avatar
          Kawaii Shoujo Duskull Kawaii Shoujo Duskull is offline
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            Okay, this is pretty cool. Nice job~
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              #7    
            Old September 9th, 2014 (3:45 AM).
            Lance32497's Avatar
            Lance32497 Lance32497 is offline
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              Quote:
              Originally Posted by DoesntKnowHowToPlay View Post


              In XY, there is a new type of battle known as the Inverse Battle. In this mode, type match-ups are reversed- moves that are normally super-effective become ineffective, and moves that are normally resisted or would have no effect become super-effective. I did some poking at the type chart code recently and found that it's actually quite easy to implement these in FR.

              "But that's easy! Just edit the well-documented type chart so every match-up is backwards!"

              That isn't what this does. This hack hijacks the code that reads the type chart to make the game use the inverse of what's there. This means you can use a flag to have hacks with both regular and inverse battles.

              The routine is as follows:

              Code:
              .align 2
.thumb
.thumb_func
push {r4, r5, lr}
mov r4, r0
mov r0, #0x02
lsl r0, #0x8
mov r1, #0x3D
add r0, r1
bl FlagCheck
cmp r0, #0x0
beq End
cmp r4, #0x0
beq SuperEffective
cmp r4, #0x5
beq SuperEffective
cmp r4, #0x14
beq Ineffective
b End

SuperEffective:
mov r4, #0x14
b End

Ineffective:
mov r4, #0x5

End:
ldr r5, .damageAddr
ldr r0, [r5, #0x0]
mul r0, r4
ldr r1, .returnAddr
bx r1

FlagCheck:
ldr r2, .flagAddr
bx r2


.align 2
.returnAddr: .word 0x0801e77d
.flagAddr: .word 0x0806e6d1
.damageAddr: .word 0x02023d50
.end
              You can insert it anywhere. To call it, insert 00 49 08 47 at x1E770, followed by a pointer to where you inserted the method + 1. (For example, I inserted the method at x170900- I would put 00 49 08 47 01 09 17 08 at x1E770).

              This code ties the Inverse Battle rules to flag x23D. If flag x23D is set, battles will use the Inverse Battle ruleset- otherwise they will work normally. If you want to use a different flag, you can change it quite easily by adjusting the values on the sixth and eighth lines. Note that in vanilla FireRed, flag x23D is used by the Pokeflute- if that script is still in the game you will want to pick a different one.
              Why when I use it in a rom, when I use a move that the type is expanded, the game crashed?
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                #8    
              Old September 11th, 2014 (3:48 PM). Edited September 11th, 2014 by LocksmithArmy.
              LocksmithArmy's Avatar
              LocksmithArmy LocksmithArmy is offline
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                Quote:
                Originally Posted by DoesntKnowHowToPlay View Post
                Code:
                .align 2
.thumb
.thumb_func
push {r4, r5, lr}
mov r4, r0
mov r0, #0x02
lsl r0, #0x8
mov r1, #0x3D
add r0, r1
bl FlagCheck
cmp r0, #0x0
beq End
cmp r4, #0x0
beq SuperEffective
cmp r4, #0x5
beq SuperEffective
cmp r4, #0x14
beq Ineffective
b End

SuperEffective:
mov r4, #0x14
b End

Ineffective:
mov r4, #0x5

End:
ldr r5, .damageAddr
ldr r0, [r5, #0x0]
mul r0, r4
ldr r1, .returnAddr
bx r1

FlagCheck:
ldr r2, .flagAddr
bx r2


.align 2
.returnAddr: .word 0x0801e77d
.flagAddr: .word 0x0806e6d1
.damageAddr: .word 0x02023d50
.end
                I kinda wanna make this as a tool lol... but I dont know how to compile ASM into hex bytes...

                how would I do that?

                P.S. Amazing work, really cool option for any hack.

                On a completely unrelated note, wouldn't this make a cool hold item... wouldn't know what to call it though lol
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                  #9    
                Old September 11th, 2014 (4:22 PM). Edited September 11th, 2014 by Deokishisu.
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                Deokishisu Deokishisu is offline
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                  Quote:
                  Originally Posted by LocksmithArmy View Post
                  On a completely unrelated note, wouldn't this make a cool hold item... wouldn't know what to call it though lol
                  Like an item that forces the inverse ruleset when a Pokemon that is holding one comes into battle?

                  It'd be super cool, but super broken. Put it on all your pure Ice-types. #IceMasterType

                  Or giving Normal-type moves unresisted coverage.
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                    #10    
                  Old September 11th, 2014 (5:53 PM).
                  LocksmithArmy's Avatar
                  LocksmithArmy LocksmithArmy is offline
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                    Quote:
                    Originally Posted by Deokishisu View Post
                    Like an item that forces the inverse ruleset when a Pokemon that is holding one comes into battle?

                    It'd be super cool, but super broken. Put it on all your pure Ice-types. #IceMasterType

                    Or giving Normal-type moves unresisted coverage.
                    Ud have to only give 1 per game...
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                      #11    
                    Old September 12th, 2014 (3:17 PM).
                    LocksmithArmy's Avatar
                    LocksmithArmy LocksmithArmy is offline
                    Mew!
                      		  
                      Join Date: Feb 2013
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                      Quote:
                      Originally Posted by DoesntKnowHowToPlay View Post


                      In XY, there is a new type of battle known as the Inverse Battle. In this mode, type match-ups are reversed- moves that are normally super-effective become ineffective, and moves that are normally resisted or would have no effect become super-effective. I did some poking at the type chart code recently and found that it's actually quite easy to implement these in FR.

                      "But that's easy! Just edit the well-documented type chart so every match-up is backwards!"

                      That isn't what this does. This hack hijacks the code that reads the type chart to make the game use the inverse of what's there. This means you can use a flag to have hacks with both regular and inverse battles.

                      The routine is as follows:

                      Code:
                      .align 2
.thumb
.thumb_func
push {r4, r5, lr}
mov r4, r0
mov r0, #0x02
lsl r0, #0x8
mov r1, #0x3D
add r0, r1
bl FlagCheck
cmp r0, #0x0
beq End
cmp r4, #0x0
beq SuperEffective
cmp r4, #0x5
beq SuperEffective
cmp r4, #0x14
beq Ineffective
b End

SuperEffective:
mov r4, #0x14
b End

Ineffective:
mov r4, #0x5

End:
ldr r5, .damageAddr
ldr r0, [r5, #0x0]
mul r0, r4
ldr r1, .returnAddr
bx r1

FlagCheck:
ldr r2, .flagAddr
bx r2


.align 2
.returnAddr: .word 0x0801e77d
.flagAddr: .word 0x0806e6d1
.damageAddr: .word 0x02023d50
.end
                      You can insert it anywhere. To call it, insert 00 49 08 47 at x1E770, followed by a pointer to where you inserted the method + 1. (For example, I inserted the method at x170900- I would put 00 49 08 47 01 09 17 08 at x1E770).

                      This code ties the Inverse Battle rules to flag x23D. If flag x23D is set, battles will use the Inverse Battle ruleset- otherwise they will work normally. If you want to use a different flag, you can change it quite easily by adjusting the values on the sixth and eighth lines. Note that in vanilla FireRed, flag x23D is used by the Pokeflute- if that script is still in the game you will want to pick a different one.
                      IBA1.JPG

                      Soo here is the tool I made... if it meets your approval I would like to publish it about the web (it seems to work as prescribed)

                      LSA - Inverse Battle Applier.zip
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                        #12    
                      Old September 12th, 2014 (6:39 PM).
                      DoesntKnowHowToPlay's Avatar
                      DoesntKnowHowToPlay DoesntKnowHowToPlay is offline
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                        Quote:
                        Originally Posted by LocksmithArmy View Post
                        Attachment 73380

                        Soo here is the tool I made... if it meets your approval I would like to publish it about the web (it seems to work as prescribed)

                        Attachment 73379
                        I'm fine with it, although I'd appreciate if you linked back to this thread wherever you distribute it.
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                          #13    
                        Old September 12th, 2014 (7:10 PM).
                        LocksmithArmy's Avatar
                        LocksmithArmy LocksmithArmy is offline
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                          Quote:
                          Originally Posted by DoesntKnowHowToPlay View Post
                          I'm fine with it, although I'd appreciate if you linked back to this thread wherever you distribute it.
                          Consider it done Thanks
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                            #14    
                          Old September 14th, 2014 (12:50 PM).
                          byrikudouvlog's Avatar
                          byrikudouvlog byrikudouvlog is offline
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                            how do i to set in a script the inverse batle?
                            someone can show me an expample please?
                            i'm not understand so
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                              #15    
                            Old September 14th, 2014 (12:54 PM).
                            LocksmithArmy's Avatar
                            LocksmithArmy LocksmithArmy is offline
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                              Quote:
                              Originally Posted by byrikudouvlog View Post
                              how do i to set in a script the inverse batle?
                              someone can show me an expample please?
                              i'm not understand so
                              Code:
                              setflag 0x23D //turns on inverse battles
                              Code:
                              clearflag 0x23D //returns battles to normal
                              the flag you set or clear should be the flag you chose, not specifically 23D
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                                #16    
                              Old September 27th, 2014 (1:09 PM).
                              LocksmithArmy's Avatar
                              LocksmithArmy LocksmithArmy is offline
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                                For anyone wanting to know how to make a trainer have an inverse battle with you... here is a detailed script:

                                Code:
                                #dynamic 0x725BEF ' any free space
#org @start
'-----------------------------------
setflag 0x33D ' the flag you chose
trainerbattle 0x1 0x(battle) 0x0 @text1 0x(oldtext2) @clearinverse 
msgbox 0x(oldwon)
callstd MSG_LOCK ' Built-in lock command
clearflag 0x33D ' the flag you chose
end

#org @text1
= (old intro text)\pThis will be an\nINVERSE BATTLE.

#org @clearinverse
'-----------------------------------
clearflag 0x33D ' the flag you chose
release
end
                                It is color coded to the parts that need to be pasted in:
                                Code:
                                #org 0x816A63E
'-----------------------------------
trainerbattle 0x0 0x8E 0x0 0x81911EC 0x8191237
msgbox 0x819126B ' You're pretty hot.\n...
callstd MSG_LOCK ' Built-in lock command
end


#org 0x81911EC
= Stop right there, kid!\pYou're ten thousand light-years \nfrom facing BROCK!

#org 0x8191237
= Darn!\pLight-years isn't time[.]\nIt measures distance!

#org 0x819126B
= You're pretty hot.\n[.]But not as hot as BROCK!
                                The example trainer(above) is the trainer in brocks gym, but the same parts can be copied from any trainer.

                                trainers using this script will not approach the player, they must be talked too.

                                X and Y usually ask the player if they want to continue... this script warns the player but does not let them back out. A simple yes/no script can make that happen. If you can't figure that out, you probably shouldn't be scripting.

                                If you are doing this for multiple trainers, you do not need to compile the [email protected]' section each time, you can just use the same offset where it is compiled once.
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                                  #17    
                                Old November 5th, 2014 (11:26 PM).
                                HidoranBlaze's Avatar
                                HidoranBlaze HidoranBlaze is offline
                                  		 
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                                  Managed to port this to EM.

                                  Replace the addresses at the end with this:

                                  Code:
                                  .returnAddr: .word 0x08046f6d
.flagAddr: .word 0x0809d791
.damageAddr: .word 0x020241f0
                                  Next, put 00 49 08 47 at 0x46f60, followed by the pointer to where you inserted the ASM + 1.

                                  That's it! I believe flag 0x2CD is used by something in EM as well, so just change the values in the sixth and eighth line if you want a different flag.
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                                    #18    
                                  Old November 6th, 2014 (5:32 AM).
                                  Aruaruu Aruaruu is offline
                                    		 
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                                    Quote:
                                    Originally Posted by HidoranBlaze View Post
                                    I believe flag 0x2CD is used by something in EM as well, so just change the values in the sixth and eighth line if you want a different flag.
                                    1. Thanks for the port of this (and of course to you, Doesnt)
                                    2. Flag 0x2CD appears to be set sometime during the Hall of Fame script. So you probably would like to change that.
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                                      #19    
                                    Old November 6th, 2014 (7:32 AM).
                                    LocksmithArmy's Avatar
                                    LocksmithArmy LocksmithArmy is offline
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                                      Quote:
                                      Originally Posted by HidoranBlaze View Post
                                      Managed to port this to EM.

                                      Replace the addresses at the end with this:

                                      Code:
                                      .returnAddr: .word 0x08046f6d
.flagAddr: .word 0x0809d791
.damageAddr: .word 0x020241f0
                                      Next, put 00 49 08 47 at 0x46f60, followed by the pointer to where you inserted the ASM + 1.

                                      That's it! I believe flag 0x2CD is used by something in EM as well, so just change the values in the sixth and eighth line if you want a different flag.
                                      would you care terrably if I added this to my tool? cedit given of course.
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                                        #20    
                                      Old November 6th, 2014 (7:36 AM).
                                      HidoranBlaze's Avatar
                                      HidoranBlaze HidoranBlaze is offline
                                        		 
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                                        Quote:
                                        Originally Posted by LocksmithArmy View Post
                                        would you care terrably if I added this to my tool? cedit given of course.
                                        Feel free to do so. Why would I port this if I didn't want others to use it? lol
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                                          #21    
                                        Old November 6th, 2014 (8:00 AM). Edited November 6th, 2014 by LocksmithArmy.
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                                        LocksmithArmy LocksmithArmy is offline
                                        Mew!
                                          		  
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                                          Quote:
                                          Originally Posted by HidoranBlaze View Post
                                          Feel free to do so. Why would I port this if I didn't want others to use it? lol
                                          I just like to make sure

                                          for those that are following this thread, version 2.0 of my tool can be downloaded from this thread:
                                          http://www.pokecommunity.com/showthread.php?p=8435317
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