Lead Actor Swapper script error

[kyonides]

0. In  Ruby indexes start at 0, not 1.

1. Yes, that internal value will get replaced automatically.

2. It looks for anybody in that specific position. The script doesn't know or care about previous swaps.

3. So everybody hates Basil now!?

Here's the updated script!
Please read the embedded comments.  They're worth it!

Code:

# * Kuick Leader Swap XP * #
#   Scripter : Kyonides
#   v1.0.0 - 2025-09-06

# * Script Calls * #

# - Set a Temporary Leader!
#  RememberLeaderIndex? stands for a boolean value: true or false.
#  This new leader becomes permanent if RememberLeaderIndex? is false.
# $game_party.temp_leader(PartyIndex, RememberLeaderIndex?)

# - Restore the Previous Leader! (If Any!)
# $game_party.restore_leader

# - Set a Leader by Actor's ID!
# $game_party.set_leader_by_id(ActorID)

class Game_Party
  def change_leader(n)
    if n < 0
      @actors.unshift @actors.pop
    else
      @actors << @actors.shift
    end
  end

  def set_leader_by_id(actor_id)
    n = @actors.index(actor_id)
    swap_leader(n) if n
  end

  def temp_leader(n, remember)
    @temp_leader_index = n if remember
    swap_leader(n)
  end

  def restore_leader
    return unless @temp_leader_index
    n = @temp_leader_index
    swap_leader(@temp_leader_index)
    @temp_leader_index = nil
  end

  def leader
    @actors[0]
  end
  private
  def swap_leader(n)
    @actors[0], @actors[n] = @actors[n], @actors[0]
    $game_player.refresh
  end
end

class Game_Player
  alias :kyon_kuick_leader_swap_gm_plyr_up :update
  def update
    kyon_kuick_leader_swap_gm_plyr_up
    if Input.trigger?(Input::L)
      $game_party.change_leader(-1)
      refresh
      return
    elsif Input.trigger?(Input::R)
      $game_party.change_leader(1)
      refresh
    end
  end
end