[Scripting Question] Surf, waterfall and dive with no HM

[Pkmn Pedrusco]

Hi! Is there any way to set a game where you can use these 3 field moves on terrains without having them? I don't mind if there's an item that allows you to use them, all I want is to be able to use them since the beginning of the game. Thanks a lot!

 

[Mikasa10]

Hi ! I'm using v20.1 version and created items for Fly, Surf, Waterfall, Strenght, Rock Smash and Flash.
You need to add an item to the game that triggers the same behaviour than the HM. This is what I did for Surf (my messages are in french in scripts, just adapt for what you want to display) :

1) Add the item in the item.txt PBS file :

[YOURSURFITEM]
Name = Your Surf Item
Pocket = 8
Price = 0
FieldUse = Direct
Flags = KeyItem
Description = Your surf item description.

2) Choose a png to use for your item, name it as your item (for instance YOURSURFITEM.png here) and put it in Graphics\Items.

3) Next you add the item handler in section Item_Effects of the scripts and call pbSurfItem (the regular HM uses pbSurf) :

ItemHandlers::UseInField.add(:YOURSURFITEM,proc{|item|
  pbSurfItem
  next true
})

4) Finally you define pbSurfItem similar to pbSurf in section Overworld_FieldMoves (my surf item is named Pédalokhlass, it's a pedalo with a Lapras head !) :

def pbSurfItem
  if !$game_player.can_ride_vehicle_with_follower?
    pbMessage("Vous avez un partenaire avec vous!")
    return false
  end
  if $PokemonGlobal.surfing
    pbMessage("Vous êtes déjà sur l'eau!")
    return false
  end
  if $game_map.metadata&.always_bicycle
    pbMessage("Ce n'est pas le moment d'utiliser ça!")
    return false
  end
  if !$game_player.pbFacingTerrainTag.can_surf_freely
    pbMessage("Ce n'est pas vraiment l'endroit pour sortir le Pédalokhlass...")
    return false
  end
  if !$game_map.passable?($game_player.x, $game_player.y, $game_player.direction, $game_player)
    pbMessage("Impossible de passer par là avec le Pédalokhlass.")
    return false
  end
  pbCancelVehicles
  pbMessage("Vous enfourchez votre Pédalokhlass!")
  surfbgm = GameData::Metadata.get.surf_BGM
  pbCueBGM(surfbgm, 0.5) if surfbgm
  pbStartSurfing
  return true
end

5) Because I wanted to change the default vehicle, I had to create a pbStartSurfingItem function instead of pbStartSurfing modify pbUpdateVehicule, add a global variable, etc... I think you don't need that.

And for Waterfall :

1) and 2) same way

3) Add the item handler :

ItemHandlers::UseInField.add(:YOURWATERFALLITEM,proc{|item|
  if !$game_player.pbFacingTerrainTag.waterfall
    pbMessage(_INTL("You can't use that here."))
    next false
  end
  pbAscendWaterfall
  next true
})

4) Here I just edited the pbWaterfall function to take into account the item, maybe you could do that for surf too but it was easier for me to create a new function for the vehicle management (my waterfall item is named Propulseur here) :

def pbWaterfall
  move = :WATERFALL
  movefinder = $player.get_pokemon_with_move(move)
  if !pbCheckHiddenMoveBadge(Settings::BADGE_FOR_WATERFALL, false) || (!$DEBUG && !movefinder && !$bag.has?(:YOURWATERFALLITEM))
    pbMessage(_INTL("A wall of water is crashing down with a mighty roar."))
    return false
  end
  if (movefinder || $DEBUG)
    if pbConfirmMessage(_INTL("It's a large waterfall. Would you like to use Waterfall?"))
      speciesname = (movefinder) ? movefinder.name : $player.name
      pbMessage(_INTL("{1} used {2}!", speciesname, GameData::Move.get(move).name))
      pbHiddenMoveAnimation(movefinder)
      pbAscendWaterfall
      return true
    end
  else
    if pbConfirmMessage(_INTL("Une énorme cascade bloque le chemin. Voulez-vous utiliser votre Propulseur?"))
      pbMessage(_INTL("{1} équipe le Propulseur pour franchir la cascade!", $player.name))
      pbAscendWaterfall
      return true
    end
  end
  return false
end

Tell me if it works for you.