[Essentials Tutorial] A better way to change battle music for AI's last Pokémon

[zingzags]

Based on this TUT:
https://pokemonessentials.wikia.com/wiki/Tutorial:Last_sent_out_pokemon_BGM

I decided to make a better version so you do not have to put a switch each time for a gymleader.

First thing you want to do is name the event "SpecialTrainer",
then you have to replace this:

  def pbSendOut(index,pokemon)
    pbSetSeen(pokemon)
    @peer.pbOnEnteringBattle(self,pokemon)
    if pbIsOpposing?(index)
      @scene.pbTrainerSendOut(index,pokemon)
     else
      @scene.pbSendOut(index,pokemon)
    end
  end

With this:

  def pbSendOut(index,pokemon)
    pbSetSeen(pokemon)
    @peer.pbOnEnteringBattle(self,pokemon)
    if pbIsOpposing?(index)
      @scene.pbTrainerSendOut(index,pokemon)
      if $game_switches[112]==true && pbPokemonCount(@party2)<2
       pbBGMPlay("PokeCenter",100,100)
     end
    else
      @scene.pbSendOut(index,pokemon)
    end
  end

Then in pokemonFeild

add this:

Events.onSpritesetCreate+=proc{|sender,e|
  spriteset=e[0] # Spriteset being created
  viewport=e[1] # Viewport used for tilemap and characters
  map=spriteset.map # Map associated with the spriteset (not necessarily the current map).
  for i in map.events.keys
    if  map.events[i].name=="SpecialTrainer"
      $game_switches[112]=true
    elsif map.events[i].name!="SpecialTrainer"
      $game_switches[112]=false
    end  
  end
}

under:

Events.onSpritesetCreate+=proc{|sender,e|
  spriteset=e[0] # Spriteset being created
  viewport=e[1] # Viewport used for tilemap and characters
  map=spriteset.map # Map associated with the spriteset (not necessarily the current map).
  for i in map.events.keys
    if map.events[i].name=="OutdoorLight"
     spriteset.addUserSprite(LightEffect_DayNight.new(map.events[i],map))
    elsif map.events[i].name=="Light"
      spriteset.addUserSprite(LightEffect_Basic.new(map.events[i],map))
    end
  end
  spriteset.addUserSprite(Particle_Engine.new(viewport,map))
}

change:

  def pbEndBattle(result)
    @abortable=false
    pbShowWindow(BLANK)
    # Fade out all sprites
    pbBGMFade(1.0)
    pbFadeOutAndHide(@sprites)
    pbDisposeSprites
  end

to:

  def pbEndBattle(result)
    @abortable=false
    pbShowWindow(BLANK)
    # Fade out all sprites
    pbBGMFade(1.0)
    pbFadeOutAndHide(@sprites)
    pbDisposeSprites
    $game_switches[112]=false
  end

And done, you can change the switch, and music to what ever you want.