Prevent Deactivation

[DerVVulfman]

Prevent Deactivation
by KK20
Version: 1.1
* and Minor F12 fix added by DerVVulfman

Introduction
When the game window is no longer the active window, it normally freezes the game from updating. This script will allow games to still run in the background.

This feature makes it so your game stays active and continues to run, even if you bring up another window or program.



Features

• Keeps the game running, even if you're running another program
  
• Has options to turn on/off the prevention feature
  
• Versions for Ruby 1.8 and newer Ruby 2.0+
  

Script

The version for Ruby 1.9.2+

Code:

=begin
================================================================================
Prevent Deactivation
Author: KK20
Version: 1.1
--------------------------------------------------------------------------------
[ Description ]
When the game window is no longer the active window, it normally freezes the
game from updating. This script will allow games to still run in the background.

[ Instructions ]
You can enable / disable this feature in-game using the script call:

              $game_system.keep_game_active = true / false
             
This is useful for custom menu options so that the player can choose their
preference of whether the game runs in the background or not.

Script should be placed as low as possible in your script list, but still
above Main.

It is highly advised to not modify this script unless you know what you are
doing.
================================================================================
=end


module MessageIntercept
  Start = Win32API.new('MessageIntercept', 'Init_Deactivate', 'pp', 'i')
  Toggle = Win32API.new('MessageIntercept', 'KeepGameActive', 'i', '')
  Flag_Deactivate = [1].pack('C*')
end

module Input
  class << self
    if @intercept_f12_stack.nil?
      alias update_if_game_in_focus update
      @intercept_f12_stack = true
    end
  end
  # Only accept player input if the game window is in focus
  def self.update
    update_if_game_in_focus if MessageIntercept::Flag_Deactivate.getbyte(0) == 1
  end
end

class Game_System
  attr_reader :keep_game_active
 
  alias init_for_no_deactivate initialize
  def initialize
    @keep_game_active = true
    init_for_no_deactivate
  end
 
  # When loading a save, need to make DLL call to enable/disable keeping the
  # game active
  alias original_update_no_deactivate update
  def self.modify_update(revert = false)
    if revert
      alias update original_update_no_deactivate
    else
      alias update no_deactivate_update
    end
  end
  def no_deactivate_update
    MessageIntercept::Toggle.call(@keep_game_active ? 1 : 0)
    original_update_no_deactivate
    Game_System.modify_update(true)
  end
 
  def keep_game_active=(bool)
    @keep_game_active = bool
    MessageIntercept::Toggle.call(@keep_game_active ? 1 : 0)
  end
end

class Game_Temp
  alias change_gamesystem_update_init initialize
  def initialize
    change_gamesystem_update_init
    Game_System.modify_update
  end
end

if MessageIntercept::Start.call('.\\Game.ini', MessageIntercept::Flag_Deactivate) == -1
  raise 'ERROR: Prevent Deactivation failed to set new window procedure!'
end

--or--

The version for RPGMaker VXAce

Code:

=begin
================================================================================
Prevent Deactivation
Author: KK20
Version: 1.1
--------------------------------------------------------------------------------
[ Description ]
When the game window is no longer the active window, it normally freezes the
game from updating. This script will allow games to still run in the background.

[ Instructions ]
You can enable / disable this feature in-game using the script call:

              $game_system.keep_game_active = true / false
             
This is useful for custom menu options so that the player can choose their
preference of whether the game runs in the background or not.

Script should be placed as low as possible in your script list, but still
above Main.

It is highly advised to not modify this script unless you know what you are
doing.
================================================================================
=end

module MessageIntercept
  Start = Win32API.new('MessageIntercept', 'Init_Deactivate', 'pp', 'i')
  Toggle = Win32API.new('MessageIntercept', 'KeepGameActive', 'i', '')
  Flag_Deactivate = [1].pack('C*')
end

module Input
  class << self
    if @intercept_f12_stack.nil?
      alias update_if_game_in_focus update
      @intercept_f12_stack = true
    end
  end
  # Only accept player input if the game window is in focus
  def self.update
    update_if_game_in_focus if MessageIntercept::Flag_Deactivate.getbyte(0) == 1
  end
end

class Game_System
  attr_reader :keep_game_active

  alias init_for_no_deactivate initialize
  def initialize
    @keep_game_active = true
    init_for_no_deactivate
  end

  def keep_game_active=(bool)
    @keep_game_active = bool
    MessageIntercept::Toggle.call(@keep_game_active ? 1 : 0)
  end
end

module DataManager
  class << self
    alias load_no_deactivate_settings extract_save_contents
    alias init_no_deactivate_settings setup_new_game
  end

  def self.setup_new_game
    $game_system.keep_game_active = true
    init_no_deactivate_settings
  end

  def self.extract_save_contents(contents)
    load_no_deactivate_settings(contents)
    Scene_Base.modify_update
  end
end


class Scene_Base
  # When loading a save, need to make DLL call to enable/disable keeping the
  # game active
  alias original_update_no_deactivate update
  def self.modify_update(revert = false)
    if revert
      alias update original_update_no_deactivate
    else
      alias update no_deactivate_update
    end
  end

  def no_deactivate_update
    MessageIntercept::Toggle.call($game_system.keep_game_active ? 1 : 0)
    original_update_no_deactivate
    Scene_Base.modify_update(true)
  end

end


if MessageIntercept::Start.call('.\\Game.ini', MessageIntercept::Flag_Deactivate) == -1
  raise 'ERROR: Prevent Deactivation failed to set new window procedure!'
end

Required Attachment
https://www.save-point.org/attachment.php?aid=1114



Instructions
Mainly, place the .DLL attached in your project's root directory and paste the script just above main after all other custom scripts.  Other instructions are in the script.



FAQ
This was searched for by DerVVulfman, the request at RPGMakerWeb.Com posted and found right (>HERE<)



Compatibility
Designed for the RPGMaker engines, with two versions based on which version of Ruby/RGSS your engine is using.



Credits and Thanks
This script was designed by KK20, and with thanks to Jaiden for the toggle on/off feature request.


Terms and Conditions
Due credit for both KK20 and Jaiden is required.  Free for use in commercial projects.