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***DerVVulfman*** · 04-22-2011, 03:30 AM

Graphic Cache Tester
Version: 1.0

Introduction
As you know, trying to load a graphic image that isn't there can crash your game. Now you have a solution.

This system is an addition to the RPG::Cache system allowing you to run a test to see if a graphic image is part of your project or not. By running a test, it can return a true/false value before you attempt to load a file.

Script

For once, it's in a spoiler

Code:
#==============================================================================

# ** Graphic Cache Tester

#------------------------------------------------------------------------------

#    version 1.0

#    by DerVVulfman

#    04-21-2011

#    RGSS / RPGMaker XP

#==============================================================================

#

#  INTRODUCTION AND INSTRUCTIONS:

#

#  As you know, trying to load a graphic image that isn't there can crash your

#  game.  Now you have a solution.

#

#  This system is an addition to the  RPG::Cache  system allowing you to run a

#  test to see if a graphic image is part of your project or not.   By running

#  a test,  it can return a true/false value before you attempt to load a file.

#

#  There are two statements you can use:

#

#     returned = RPG::Cache.test_1(type, filename)

#     returned = RPG::Cache.test_2(type, filename)

#

#  The first one, test_1, is designed to work with cache files that don't pass

#  a hue value... like pictures, icons and the like.   The second one, test_2,

#  is designed to check for images that that have a hue value attached to them

#  such as charactersets, battlers and so forth.  You don't need to pass a hue

#  value... it's just checking to see the file exists.

#

#  EX:  returned = RPG::Cache.test_1('tileset', '001-Grassland01')

#

#  You must work with the names of the cache types  as noted in the RPG::Cache

#  system, but it should work with custom cache folders of your own design.

#

#

#==============================================================================

#

#  TERMS AND CONDITIONS:

#

#  Just due credit for this one.  It'a free to use, even in commercial games.

# 

#==============================================================================

#==============================================================================

# ** RPG::Cache

#------------------------------------------------------------------------------

#  This is a module that loads each of RPGXP's graphic formats, creates a 

#  Bitmap object, and retains it.

#==============================================================================

module RPG::Cache

  #--------------------------------------------------------------------------

  # * Test Cache File #1 (no hue option)

  #     type     : cache type (autotile, icon, picture, etc.)

  #     filename : filename of the cached bitmap

  #--------------------------------------------------------------------------  

  def self.test_1(type, filename)

    failed = false

    begin

      bitmap = eval("self.#{type}(filename)")

    rescue Errno::ENOENT      

      failed = true

    end

    return !failed

  end

  #--------------------------------------------------------------------------

  # * Test Cache File #2 (existing hue option)

  #     type     : cache type (character, battler, panorama, etc.)

  #     filename : filename of the cached bitmap

  #--------------------------------------------------------------------------  

  def self.test_2(type, filename)

    failed = false

    begin

      bitmap = eval("self.#{type}(filename, 0)")

    rescue Errno::ENOENT      

      failed = true

    end

    return !failed

  end

end