Help with Form Changes

[delusionsofgrandr]

Hi! I'm trying to create a regional form of Mimikyu, but I'm running into some issues getting Disguise to work as intended. I've gotten as far as getting Disguise to take the blow in the place of initial damage, but instead of changing to the new regional busted form, Mimikyu goes back to the Alolan busted form, then reverts to the Alolan disguise after the battle. Could I get some advice on how I can implement this? I've tried looking at the code for Zen Mode Darmanitan, but it just isn't clicking.

 

[Atlat]

This is going solely off of what I remember right now, but it sounds like Mimikyu's form change is directly setting Mimikyu to form 1 (Alola busted form). If the way you set it up is: Form 0 = Mimikyu, 1 = Busted, 2 = Regional Mimikyu, 3 = Busted Regional, then you need to change how the form change happens so that instead of =0 and =1, it's +=1 on getting hit and -=1 on leaving battle.

 

[delusionsofgrandr]

This is going solely off of what I remember right now, but it sounds like Mimikyu's form change is directly setting Mimikyu to form 1 (Alola busted form). If the way you set it up is: Form 0 = Mimikyu, 1 = Busted, 2 = Regional Mimikyu, 3 = Busted Regional, then you need to change how the form change happens so that instead of =0 and =1, it's +=1 on getting hit and -=1 on leaving battle.

Omg thank you, I’ll give this a shot when I’m next on my computer

EDIT You're a genius, thank you!

EDIT EDIT: I thought I had fixed it, but now I'm stuck with both Mimikyu forms changing to my new regional busted form, and getting stuck that way instead of going back to their proper disguised form... Is anyone free to critique my coding?

Spoiler: Code for Disguise triggering

Trying to insert just "@form + 1" triggered an error when I entered battle and Mimikyu took damage, so I tried this workaround, and it seemed to work, but now regular Alolan Mimikyu is changing to the new regional busted form too.

if target.damageState.disguise
      @battle.pbShowAbilitySplash(target)
      if Battle::Scene::USE_ABILITY_SPLASH
        @battle.pbDisplay(_INTL("Its disguise served it as a decoy!"))
      else
        @battle.pbDisplay(_INTL("{1}'s disguise served it as a decoy!", target.pbThis))
      end
      @battle.pbHideAbilitySplash(target)
        target.pbChangeForm((@form == 0 ? 1 : 3), _INTL("{1}'s disguise was busted!", target.pbThis))
        target.pbReduceHP(target.totalhp / 8, false) if Settings::MECHANICS_GENERATION >= 8

This is the error message I get when I insert "@form + 1":

Spoiler

[Pokémon Essentials version 21.1]
[v21.1 Hotfixes 1.0.0]
[v21.1 Hotfixes 1.0.9]

Exception: NoMethodError
Message: undefined method `+' for nil:NilClass

Backtrace:
Move_Usage:343:in `pbEndureKOMessage'
Battler_UseMove:691:in `block in pbProcessMoveHit'
Battler_UseMove:689:in `each'
Battler_UseMove:689:in `pbProcessMoveHit'
Battler_UseMove:409:in `block in pbUseMove'
Battler_UseMove:407:in `times'
Battler_UseMove:407:in `pbUseMove'
[Deluxe Battle Kit] [001] Animation Utilities.rb:265:in `block in pbProcessTurn'
PBDebug:6:in `logonerr'
[Deluxe Battle Kit] [001] Animation Utilities.rb:265:in `pbProcessTurn'

Spoiler: Code for returning to Disguised form after battle

Nothing works here no matter what I try.

MultipleForms.register(:MIMIKYU, { #disguised is 0 and 2, busted is 1 and 3)
  "getFormOnLeavingBattle" => proc { |pkmn, battle, usedInBattle, endBattle|
      next pkmn.form - 1
  }
})

EDIT 10/06/25:

Coming back to leave a copy of the working code here in case anyone faces the same issue I did!

Spoiler: Code for form change during battle after triggering Disguise

   if target.damageState.disguise
      @battle.pbShowAbilitySplash(target)
      if Battle::Scene::USE_ABILITY_SPLASH
        @battle.pbDisplay(_INTL("Its disguise served it as a decoy!"))
      else
        @battle.pbDisplay(_INTL("{1}'s disguise served it as a decoy!", target.pbThis))
      end
      @battle.pbHideAbilitySplash(target)
        target.pbChangeForm((target.form + 1), _INTL("{1}'s disguise was busted!", target.pbThis))
        target.pbReduceHP(target.totalhp / 8, false) if Settings::MECHANICS_GENERATION >= 8

Spoiler: Code for leaving battle

Strangely enough, I also had to place this in a separate plugin... I think something else I installed overrode my form handlers.

MultipleForms.register(:MIMIKYU, { #disguised is 0 and 2, busted is 1 and 3)
  "getFormOnLeavingBattle" => proc { |pkmn, battle, usedInBattle, endBattle|
   next if pkmn.form.even? #if no form change no need to change back 
   next pkmn.form - 1 if pkmn.fainted? || endBattle
    }
})