#==============================================================================#
#  Multiplayer.
#==============================================================================#
#  Plataforma: RPGMAKER VX ACE
#  Dificultad: Medio
#  Version   : 1.2
#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~#
#  21-08-2013 - Version 1.1 => Implementacion pantalla dividida.
#  19-08-2013 - Version 1.1 => mejora del codigo.
#  14-04-2013 - Version 1.0 => version inicial.
#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~#
#  Permite crear a un segundo jugador.
#==============================================================================#
module NeoGab
  module DirPlayer2
#==============================================================================#
#  Configuraciones.
#++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++#
  DOWN  = Input::Y       # S en el teclado.
  LEFT  = Input::X       # A en el teclado.
  RIGHT = Input::Z       # D en el teclado.
  UP    = Input::R       # W en el teclado.
  ENTER = Input::L       # Q en el teclado.
  RUN   = Input::A       # Shift en el teclado.
#++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++#
#  Fin de las configuraciones.
#==============================================================================#
  end
end
#==============================================================================
# • Input.
#==============================================================================
module Input
  extend self
  def self.dir4_player2
    return 2 if self.press?(NeoGab::DirPlayer2::DOWN)
    return 4 if self.press?(NeoGab::DirPlayer2::LEFT)
    return 6 if self.press?(NeoGab::DirPlayer2::RIGHT)
    return 8 if self.press?(NeoGab::DirPlayer2::UP)
    return 0
  end
  def self.dir8_player2
    if self.press?(NeoGab::DirPlayer2::UP)
      return 9 if self.press?(NeoGab::DirPlayer2::RIGHT)
      return 7 if self.press?(NeoGab::DirPlayer2::LEFT)
      return 8
    end
    if self.press?(NeoGab::DirPlayer2::DOWN)
      return 3 if self.press?(NeoGab::DirPlayer2::RIGHT)
      return 1 if self.press?(NeoGab::DirPlayer2::LEFT)
      return 2
    end
    return 6 if self.press?(NeoGab::DirPlayer2::RIGHT)
    return 4 if self.press?(NeoGab::DirPlayer2::LEFT)
    return 0
  end
end

#==============================================================================
# ■ Game Multiplayer
#==============================================================================
class Game_Multiplayer < Game_Player
  def actor
    $game_party.battle_members[1]
  end
  def dash?
    return false if @move_route_forcing
    return false if $game_map.disable_dash?
    return Input.press?(NeoGab::DirPlayer2::RUN)
  end
  def move_by_input
    return unless movable?
    return if $game_map.interpreter.running?
    move_straight(Input.dir4_player2) if Input.dir4_player2 > 0
  end
  def update_nonmoving(last_moving)
    return if $game_map.interpreter.running?
    if last_moving
      $game_party.on_player_walk
      return if check_touch_event
    end
    if movable? && Input.trigger?(NeoGab::DirPlayer2::ENTER)
      return if check_action_event
    end
    update_encounter if last_moving
  end
  def center(x, y)
    $game_map.set_display_pos_p2(x - center_x, y - center_y)
  end
  def moveto(x, y)
    super
    center(x, y)
    make_encounter_count
  end
  def update_scroll(last_real_x, last_real_y)
    ax1 = $game_map.adjust_x_p2(last_real_x)
    ay1 = $game_map.adjust_y_p2(last_real_y)
    ax2 = $game_map.adjust_x_p2(@real_x)
    ay2 = $game_map.adjust_y_p2(@real_y)
    $game_map.scroll_down_p2 (ay2 - ay1) if ay2 > ay1 && ay2 > center_y
    $game_map.scroll_left_p2 (ax1 - ax2) if ax2 < ax1 && ax2 < center_x
    $game_map.scroll_right_p2(ax2 - ax1) if ax2 > ax1 && ax2 > center_x
    $game_map.scroll_up_p2   (ay1 - ay2) if ay2 < ay1 && ay2 < center_y
  end
  def collide_with_other_player?(x, y)
    $game_player.collide?(x, y)
  end
end

#==============================================================================
# ■ Game Player
#==============================================================================
class Game_Player < Game_Character
  alias :nmp_collidewith :collide_with_characters?
#~   def center_x
#~     (Graphics.width / 32 - 1) / 4.0
#~   end
  def center_y
    (Graphics.height / 32 - 1) / 4.0
  end
  def perform_transfer
    if transfer?
      set_direction(@new_direction)
      $game_player2.sync_with($game_player)
      if @new_map_id != $game_map.map_id
        $game_map.setup(@new_map_id)
        $game_map.autoplay
      end
      moveto(@new_x, @new_y)
      $game_player2.moveto(@new_x, @new_y)
      clear_transfer_info
    end
  end
  def start_map_event(x, y, triggers, normal)
    $game_map.events_xy(x, y).each do |event|
      if event.trigger_in?(triggers) && event.normal_priority? == normal
        event.turn_toward_character(self)
        event.start
      end
    end
  end
  def collide_with_other_player?(x, y)
    $game_player2.collide?(x, y)
  end
  def collide_with_characters?(x, y)
    return true if collide_with_other_player?(x, y)
    nmp_collidewith(x, y)
  end
end

#==============================================================================
# ■ Game Character
#==============================================================================
class Game_Character < Game_CharacterBase
  def sync_with(target)
    @x = target.x
    @y = target.y
    @real_x = target.real_x
    @real_y = target.real_y
    @direction = target.direction
    update_bush_depth
  end
end

#==============================================================================
# ■ Game_Followers
#==============================================================================
class Game_Followers
  def initialize(leader)
    @visible = $data_system.opt_followers
    @gathering = false
    @data = []
    @data.push(Game_Follower.new(2, leader))
    (3...$game_party.max_battle_members).each do |index|
      @data.push(Game_Follower.new(index, @data[-1]))
    end
  end
end

#==============================================================================
# ■ DataManager.
#==============================================================================
module DataManager
  class << self
    alias :multiplayer_create_game_objects :create_game_objects
    alias :multiplayer_make_save_contents :make_save_contents
    alias :multiplayer_extract_save_contents :extract_save_contents
  end
  def self.create_game_objects
    multiplayer_create_game_objects
    $game_player2 = Game_Multiplayer.new
  end
  def self.make_save_contents
    contents = multiplayer_make_save_contents
    contents[:player2] = $game_player2
    contents
  end
  def self.extract_save_contents(contents)
    multiplayer_extract_save_contents(contents)
    $game_player2 = contents[:player2]
  end
  def self.setup_new_game
    create_game_objects
    $game_party.setup_starting_members
    $game_map.setup($data_system.start_map_id)
    $game_player.moveto($data_system.start_x, $data_system.start_y)
    $game_player.refresh
    $game_player2.moveto($data_system.start_x, $data_system.start_y)
    $game_player2.refresh
    Graphics.frame_count = 0
  end
end

#==============================================================================
# ■ Game Party.
#==============================================================================
class Game_Party
  alias :multiplayer_add_actor :add_actor
  alias :multiplayer_remove_actor :remove_actor
  def add_actor(actor_id)
    multiplayer_add_actor(actor_id)
    $game_player2.refresh if $game_player2
  end
  def remove_actor(actor_id)
    multiplayer_remove_actor(actor_id)
    $game_player2.refresh if $game_player2
  end
end

#==============================================================================
# ■ Scene_Menu
#==============================================================================
class Scene_Menu < Scene_MenuBase
  alias :multiplayer_on_formation_ok :on_formation_ok
  def on_formation_ok
    multiplayer_on_formation_ok
    $game_player2.refresh if $game_player2
  end
end

#==============================================================================
# ■ Game Map.
#==============================================================================
class Game_Map
  attr_accessor :display_x2
  attr_accessor :display_y2
  alias :nmp_initialize :initialize
  def initilaize
    @display_x2 = 0
    @display_y2 = 0
    nmp_initialize
  end
  alias :nmp_setup :setup
  def setup(map_id)
    @display_x2 = 0
    @display_y2 = 0
    @scroll_direction_2 = 2
    @scroll_rest_2 = 0
    @scroll_speed_2 = 4
    nmp_setup(map_id)
  end
  def scroll_down_p2(distance)
    if loop_vertical?
      @display_y2 += distance
      @display_y2 %= @map.height
      @parallax_y += distance if @parallax_loop_y
    else
      last_y = @display_y2
      @display_y2 = [@display_y2 + distance, height - screen_tile_y].min
      @parallax_y += @display_y2 - last_y
    end
  end
  def scroll_left_p2(distance)
    if loop_horizontal?
      @display_x2 += @map.width - distance
      @display_x2 %= @map.width
      @parallax_x -= distance if @parallax_loop_x
    else
      last_x = @display_x2
      @display_x2 = [@display_x2 - distance, 0].max
      @parallax_x += @display_x2 - last_x
    end
  end
  def scroll_right_p2(distance)
    if loop_horizontal?
      @display_x2 += distance
      @display_x2 %= @map.width
      @parallax_x += distance if @parallax_loop_x
    else
      last_x = @display_x2
      @display_x2 = [@display_x2 + distance, (width - screen_tile_x)].min
      @parallax_x += @display_x2 - last_x
    end
  end
  def scroll_up_p2(distance)
    if loop_vertical?
      @display_y2 += @map.height - distance
      @display_y2 %= @map.height
      @parallax_y -= distance if @parallax_loop_y
    else
      last_y = @display_y2
      @display_y2 = [@display_y2 - distance, 0].max
      @parallax_y += @display_y2 - last_y
    end
  end
  def start_scroll_p2(direction, distance, speed)
    @scroll_direction_2 = direction
    @scroll_rest_2 = distance
    @scroll_speed_2 = speed
  end
  def scrolling_2?
    @scroll_rest_2 > 0
  end
  def update_scroll
    return unless scrolling_2?
    last_x = @display_x2
    last_y = @display_y2
    do_scroll_p2(@scroll_direction_2, scroll_distance_p2)
    if @display_x2 == last_x && @display_y2 == last_y
      @scroll_rest_2 = 0
    else
      @scroll_rest_2 -= scroll_distance_p2
    end
  end
  def do_scroll_p2(direction, distance)
    case direction
    when 2;  scroll_down_p2 (distance)
    when 4;  scroll_left_p2 (distance)
    when 6;  scroll_right_p2(distance)
    when 8;  scroll_up_p2   (distance)
    end
  end
  def scroll_distance_p2
    2 ** @scroll_speed_2 / 256.0
  end
  def set_display_pos_p2(x, y)
    x = [0, [x, width - screen_tile_x].min].max unless loop_horizontal?
    y = [0, [y, height - screen_tile_y].min].max unless loop_vertical?
    @display_x2 = (x + width) % width
    @display_y2 = (y + height) % height
    @parallax_x2 = x
    @parallax_y = y
  end
  def adjust_x_p2(x)
    if loop_horizontal? && x < @display_x2 - (width - screen_tile_x) / 2
      x - @display_x2 + @map.width
    else
      x - @display_x2
    end
  end
  def adjust_y_p2(y)
    if loop_vertical? && y < @display_y2 - (height - screen_tile_y) / 2
      y - @display_y2 + @map.height
    else
      y - @display_y2
    end
  end
#~   def screen_tile_x
#~     Graphics.width / 64
#~   end
  def screen_tile_y
    Graphics.height / 64
  end
end

#==============================================================================
# ■ Game_CharacterBase.
#==============================================================================
class Game_CharacterBase
  def screen_x_p2
    $game_map.adjust_x_p2(@real_x) * 32 + 16
  end
  def screen_y_p2
    $game_map.adjust_y_p2(@real_y) * 32 + 32 - shift_y - jump_height
  end
  def screen_z_p2
    @priority_type * 100
  end
  def jumpto_tile(x, y)
    jumpto(0, [x, y])
  end
  def jumpto(char_id, tilexy=nil)
    if char_id > 0
      char = $game_map.events[char_id]
    elsif char_id < 0
      char = $game_player2
    else
      char = $game_player
    end
    tilexy.nil? ? condxy = [char.x, char.y] : condxy = [tilexy[0], tilexy[1]]
    jx = + eval_distance(tilexy.nil? ? char : tilexy)[0] if condxy[0] >= @x
    jy = - eval_distance(tilexy.nil? ? char : tilexy)[1] if condxy[1] <= @y
    jx = - eval_distance(tilexy.nil? ? char : tilexy)[0] if condxy[0] <= @x
    jy = - eval_distance(tilexy.nil? ? char : tilexy)[1] if condxy[1] <= @y
    jx = - eval_distance(tilexy.nil? ? char : tilexy)[0] if condxy[0] <= @x
    jy = + eval_distance(tilexy.nil? ? char : tilexy)[1] if condxy[1] >= @y
    jx = + eval_distance(tilexy.nil? ? char : tilexy)[0] if condxy[0] >= @x
    jy = + eval_distance(tilexy.nil? ? char : tilexy)[1] if condxy[1] >= @y
    jump(jx, jy)
  end
  def eval_distance(target)
    if target.is_a?(Array)
      distance_x = (@x - target[0]).abs
      distance_y = (@y - target[1]).abs
    else
      distance_x = (@x - target.x).abs
      distance_y = (@y - target.y).abs
    end
    return [distance_x, distance_y]
  end
end

#==============================================================================
# ■ Game_Event
#==============================================================================
class Game_Event < Game_Character
  alias :nmp_collidewith :collide_with_characters?
  def collide_with_characters?(x, y)
    return true if collide_with_player2?(x, y)
    nmp_collidewith(x, y)
  end
  def collide_with_player2?(x, y)
    normal_priority? && $game_player2.collide?(x, y)
  end
  def lock
    unless @locked
      @prelock_direction = @direction
      @locked = true
    end
  end
end

#==============================================================================
# ■ Scene Map.
#==============================================================================
class Scene_Map < Scene_Base
  alias :multiplayer_map_start :start
  alias :multiplayer_map_updt :update
  alias :multiplayer_map_disp :dispose_spriteset
  alias :multiplayer_map_updtforfade :update_for_fade
  def start
    super
    multiplayer_map_start
    @spriteset2 = Spriteset_Map2.new
  end
  def update
    multiplayer_map_updt
    $game_player2.update if $game_player2
    @spriteset2.update
  end
  def dispose_spriteset
    multiplayer_map_disp
    @spriteset2.dispose
  end
  def update_call_menu
    if $game_system.menu_disabled || $game_map.interpreter.running?
      @menu_calling = false
    else
      @menu_calling ||= Input.trigger?(:B)
      call_menu if @menu_calling && !$game_player.moving?
    end
  end
  def update_for_fade
    multiplayer_map_updtforfade
    @spriteset2.update
  end
end

#==============================================================================
# ■ Spriteset_Map.
#==============================================================================
class Spriteset_Map
  alias :multiplayer_create_characters :create_characters
  def create_characters
    multiplayer_create_characters
    @character_sprites.push(Sprite_Character.new(@viewport1, $game_player2))
  end
  def create_viewports
    @viewport1 = Viewport.new(0, 0, Graphics.width, (Graphics.height/2)-1)
    @viewport2 = Viewport.new(0, 0, Graphics.width, (Graphics.height/2)-1)
    @viewport3 = Viewport.new(0, 0, Graphics.width, (Graphics.height/2)-1)
    @viewport2.z = 50
    @viewport3.z = 100
  end
end

#==============================================================================
# ■ Spriteset_Map.
#==============================================================================
class Spriteset_Map2
  def initialize
    create_viewports
    create_tilemap
    create_parallax
    create_characters
    create_shadow
    create_weather
    create_timer
    update
  end
  def create_viewports
    @viewport1 = Viewport.new(0,(Graphics.height/2)+1,Graphics.width,(Graphics.height/2)-1)
    @viewport2 = Viewport.new(0,(Graphics.height/2)+1,Graphics.width,(Graphics.height/2)-1)
    @viewport3 = Viewport.new(0,(Graphics.height/2)+1,Graphics.width,(Graphics.height/2)-1)
    @viewport2.z = 50
    @viewport3.z = 100
  end
  def create_tilemap
    @tilemap = Tilemap.new(@viewport1)
    @tilemap.map_data = $game_map.data
    load_tileset
  end
  def load_tileset
    @tileset = $game_map.tileset
    @tileset.tileset_names.each_with_index do |name, i|
      @tilemap.bitmaps[i] = Cache.tileset(name)
    end
    @tilemap.flags = @tileset.flags
  end
  def create_parallax
    @parallax = Plane.new(@viewport1)
    @parallax.z = -100
  end
  def create_characters
    @character_sprites = []
    $game_map.events.values.each do |event|
      @character_sprites.push(Sprite_Character2.new(@viewport1, event))
    end
    $game_map.vehicles.each do |vehicle|
      @character_sprites.push(Sprite_Character2.new(@viewport1, vehicle))
    end
    $game_player.followers.reverse_each do |follower|
      @character_sprites.push(Sprite_Character2.new(@viewport1, follower))
    end
    @character_sprites.push(Sprite_Character2.new(@viewport1, $game_player))
    @character_sprites.push(Sprite_Character2.new(@viewport1, $game_player2))
    @map_id = $game_map.map_id
  end
  def create_shadow
    @shadow_sprite = Sprite.new(@viewport1)
    @shadow_sprite.bitmap = Cache.system("Shadow")
    @shadow_sprite.ox = @shadow_sprite.bitmap.width / 2
    @shadow_sprite.oy = @shadow_sprite.bitmap.height
    @shadow_sprite.z = 180
  end
  def create_weather
    @weather = Spriteset_Weather.new(@viewport2)
  end
  def create_timer
    @timer_sprite = Sprite_Timer.new(@viewport2)
  end
  def dispose
    dispose_tilemap
    dispose_parallax
    dispose_characters
    dispose_shadow
    dispose_weather
    dispose_timer
    dispose_viewports
  end
  def dispose_tilemap
    @tilemap.dispose
  end
  def dispose_parallax
    @parallax.bitmap.dispose if @parallax.bitmap
    @parallax.dispose
  end
  def dispose_characters
    @character_sprites.each {|sprite| sprite.dispose }
  end
  def dispose_shadow
    @shadow_sprite.dispose
  end
  def dispose_weather
    @weather.dispose
  end
  def dispose_timer
    @timer_sprite.dispose
  end
  def dispose_viewports
    @viewport1.dispose
    @viewport2.dispose
    @viewport3.dispose
  end
  def refresh_characters
    dispose_characters
    create_characters
  end
  def update
    update_tileset
    update_tilemap
    update_parallax
    update_characters
    update_shadow
    update_weather
    update_timer
    update_viewports
  end
  def update_tileset
    if @tileset != $game_map.tileset
      load_tileset
      refresh_characters
    end
  end
  def update_tilemap
    @tilemap.map_data = $game_map.data
    @tilemap.ox = $game_map.display_x2 * 32
    @tilemap.oy = $game_map.display_y2 * 32
    @tilemap.update
  end
  def update_parallax
    if @parallax_name != $game_map.parallax_name
      @parallax_name = $game_map.parallax_name
      @parallax.bitmap.dispose if @parallax.bitmap
      @parallax.bitmap = Cache.parallax(@parallax_name)
      Graphics.frame_reset
    end
    @parallax.ox = $game_map.parallax_ox(@parallax.bitmap)
    @parallax.oy = $game_map.parallax_oy(@parallax.bitmap)
  end
  def update_characters
    refresh_characters if @map_id != $game_map.map_id
    @character_sprites.each {|sprite| sprite.update }
  end
  def update_shadow
    airship = $game_map.airship
    @shadow_sprite.x = airship.screen_x_p2
    @shadow_sprite.y = airship.screen_y_p2 + airship.altitude
    @shadow_sprite.opacity = airship.altitude * 8
    @shadow_sprite.update
  end
  def update_weather
    @weather.type = $game_map.screen.weather_type
    @weather.power = $game_map.screen.weather_power
    @weather.ox = $game_map.display_x2 * 32
    @weather.oy = $game_map.display_y2 * 32
    @weather.update
  end
  def update_timer
    @timer_sprite.update
  end
  def update_viewports
    @viewport1.tone.set($game_map.screen.tone)
    @viewport1.ox = $game_map.screen.shake
    @viewport2.color.set($game_map.screen.flash_color)
    @viewport3.color.set(0, 0, 0, 255 - $game_map.screen.brightness)
    @viewport1.update
    @viewport2.update
    @viewport3.update
  end
end

#==============================================================================
# ■ Sprite_Character2.
#==============================================================================
class Sprite_Character2 < Sprite_Base
  attr_accessor :character
  def initialize(viewport, character = nil)
    super(viewport)
    @character = character
    update
  end
  def update
    super
    update_bitmap
    update_src_rect
    update_position
    update_other
  end
  def tileset_bitmap(tile_id)
    Cache.tileset($game_map.tileset.tileset_names[5 + tile_id / 256])
  end
  def update_bitmap
    if graphic_changed?
      @tile_id = @character.tile_id
      @character_name = @character.character_name
      @character_index = @character.character_index
      if @tile_id > 0
        set_tile_bitmap
      else
        set_character_bitmap
      end
    end
  end
  def graphic_changed?
    @tile_id != @character.tile_id ||
    @character_name != @character.character_name ||
    @character_index != @character.character_index
  end
  def set_tile_bitmap
    sx = (@tile_id / 128 % 2 * 8 + @tile_id % 8) * 32;
    sy = @tile_id % 256 / 8 % 16 * 32;
    self.bitmap = tileset_bitmap(@tile_id)
    self.src_rect.set(sx, sy, 32, 32)
    self.ox = 16
    self.oy = 32
  end
  def set_character_bitmap
    self.bitmap = Cache.character(@character_name)
    sign = @character_name[/^[\!\$]./]
    if sign && sign.include?('$')
      @cw = bitmap.width / 3
      @ch = bitmap.height / 4
    else
      @cw = bitmap.width / 12
      @ch = bitmap.height / 8
    end
    self.ox = @cw / 2
    self.oy = @ch
  end
  def update_src_rect
    if @tile_id == 0
      index = @character.character_index
      pattern = @character.pattern < 3 ? @character.pattern : 1
      sx = (index % 4 * 3 + pattern) * @cw
      sy = (index / 4 * 4 + (@character.direction - 2) / 2) * @ch
      self.src_rect.set(sx, sy, @cw, @ch)
    end
  end
  def update_position
    self.x = @character.screen_x_p2
    self.y = @character.screen_y_p2
    self.z = @character.screen_z_p2
  end
  def update_other
    self.opacity = @character.opacity
    self.blend_type = @character.blend_type
    self.bush_depth = @character.bush_depth
    self.visible = !@character.transparent
  end
end