Two-player games Options

[Tsukihime]

Are there any scripts in any RPG maker that allows developers to write games that are meant for multiple people to play at the same time?

For example, you could plug in two controllers or use two separate sets of keys to control two different players on the map.

[Night_Runner]

RMXP had one, it had a split screen setup for the 2 players
http://www.hbgames.org/forums/viewtopic.php?t=6178

I remember it worked, but I'm not sure how it performed in practice

It uses the WASD buttons for player 2, but I don't believe that it works with 2 controllers.

[Tsukihime]

There doesn't seem to be links in that thread anymore lol
Unless I have to register.

I would like to assume it is a matter of spawning multiple fibers to handle each player, so when the game starts we immediately fork and have each fiber run an instance of the game (separate scene maps, etc).

I would probably need to create a custom "outer" viewport that will contain the multiple screens, where each screen is contained in its own viewport. This would allow me to extend it to more than 2 players if the specific RPG Maker supports more than 648x480 resolutions.

I would take my player-switching script for VXA and instead of switching between players, I would have each screen take one of those players and just control it.

But it probably isn't that simple lol

A bad implementation would likely be extremely laggy.

This post has been edited by Tsukihime: May 24 2012, 11:26 AM

[Night_Runner]

Look for link 2 under the demo's spoiler, the other two don't work (you need the password, which is why I didn't link directly to the demo RapidShare link)

[Tsukihime]

I got a simple implementation working for Ace
Getting multiple players was easier than I thought. Only reason I subclassed was to provide custom key controls, though I would prefer giving "player ID's" and having them look up a controller mapping based on their ID.

The issue now is to create split-screen and run a separate thread for each player.

CODE

module DataManager

  class << self
    alias :th_multiplayer_create_game_objects :create_game_objects
    alias :th_multiplayer_make_save_contents :make_save_contents
    alias :th_multiplayer_extract_save_contents :extract_save_contents
  end

  def self.create_game_objects
    th_multiplayer_create_game_objects
    $game_player2 = Game_Multiplayer.new

  end

  def self.make_save_contents
    contents = th_multiplayer_make_save_contents
    contents[:player2] = $game_player2
    contents
  end

  def self.extract_save_contents(contents)
    th_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

class Game_Multiplayer < Game_Player

  DOWN = Input::Y # S in Keyboard
  LEFT = Input::X # A in Keyboard
  RIGHT = Input::Z # D in Keyboard
  UP = Input::R # W in Keyboard
  ENTER = Input::L # Q in Keyboard
  RUN = Input::A # Shift in Keyboard

  def move_by_input
    return unless movable?
    return if $game_map.interpreter.running?
    if Input.press?(DOWN)
      move_straight(2)
    elsif Input.press?(LEFT)
      move_straight(4)
    elsif Input.press?(RIGHT)
      move_straight(6)
    elsif Input.press?(UP)
      move_straight(8)
    end
  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?(ENTER)
      return if get_on_off_vehicle
      return if check_action_event
    end
    update_encounter if last_moving
  end
end

class Spriteset_Map
  alias :th_multiplayer_create_characters :create_characters

  def create_characters
    th_multiplayer_create_characters
    @character_sprites.push(Sprite_Character.new(@viewport1, $game_player2))
  end
end


class Scene_Map < Scene_Base
  alias :th_multiplayer_map_update :update
  def update
    th_multiplayer_map_update
    $game_player2.update if $game_player2
  end
end

This post has been edited by Tsukihime: May 25 2012, 09:29 PM