Mach and Acro Bike script (v.18.1)

module PBTerrain
  ACROBIKEUpDown = 18
  ACROBIKELeftRight = 19
  ACROBIKEHOP = 20
  MACHBIKE = 21
  
  def self.isAcroBike?(tag)
    return tag==PBTerrain::ACROBIKEUpDown ||
           tag==PBTerrain::ACROBIKELeftRight
  end
  
  def self.isUDAcroBike?(tag)
    return tag==PBTerrain::ACROBIKEUpDown
  end
  
  def self.isLRAcroBike?(tag)
    return tag==PBTerrain::ACROBIKELeftRight
  end
  
  def self.isAcroBikeHop?(tag)
    return tag==PBTerrain::ACROBIKEHOP
  end
  
  def self.isMachBike?(tag)
    return tag==PBTerrain::MACHBIKE
  end
end

  def jump(x_plus, y_plus)
    tag = $game_map.terrain_tag($game_player.x,$game_player.y)
    if !PBTerrain.isAcroBike?(tag)
      if x_plus != 0 or y_plus != 0
        if x_plus.abs > y_plus.abs
          (x_plus < 0) ? turn_left : turn_right
        else
          (y_plus < 0) ? turn_up : turn_down
        end
      end
    end
    new_x = @x + x_plus
    new_y = @y + y_plus
    if (x_plus == 0 and y_plus == 0) || passable?(new_x, new_y, 0)
      @x = new_x
      @y = new_y
      real_distance = Math::sqrt(x_plus * x_plus + y_plus * y_plus)
      distance = [1, real_distance].max
      @jump_peak = distance * Game_Map::TILE_HEIGHT * 3 / 8   # 3/4 of tile for ledge jumping
      @jump_distance = [x_plus.abs * Game_Map::REAL_RES_X, y_plus.abs * Game_Map::REAL_RES_Y].max
      @jump_distance_left = 1   # Just needs to be non-zero
      if real_distance > 0   # Jumping to somewhere else
        @jump_count = 0
      else   # Jumping on the spot
        @jump_count = Game_Map::REAL_RES_X / jump_speed_real   # Number of frames to jump one tile
      end
      @stop_count = 0
      if self.is_a?(Game_Player)
        $PokemonTemp.dependentEvents.pbMoveDependentEvents
      end
      triggerLeaveTile
    end
  end

class Game_Player
  alias old_up_command_new update_command_new
  def update_command_new
    dir = Input.dir4
    unless pbMapInterpreterRunning? || $game_temp.message_window_showing ||
           $PokemonTemp.miniupdate || $game_temp.in_menu
      tag = $game_map.terrain_tag($game_player.x,$game_player.y)
      if PBTerrain.isUDAcroBike?(tag)
        return if dir == 4 || dir == 6
      elsif PBTerrain.isLRAcroBike?(tag)
        return if dir == 2 || dir == 8
      end
    end
    old_up_command_new
  end
end