Add an assets path variable

Adds `Ruby2D.assets/=`. By default, will resolve to `./assets`. If run in a macOS app bundle, will resolve to `App.app/Contents/Resources/assets`, for example.

1 files changed, 51 insertions, 28 deletions

diff --git a/lib/ruby2d.rb b/lib/ruby2d.rb
index 2471888..305f065 100644
--- a/lib/ruby2d.rb
+++ b/lib/ruby2d.rb
@@ -1,36 +1,59 @@
 # Ruby2D module and native extension loader, adds DSL
 
-require 'ruby2d/colorize'
-require 'ruby2d/exceptions'
-require 'ruby2d/renderable'
-require 'ruby2d/color'
-require 'ruby2d/window'
-require 'ruby2d/dsl'
-require 'ruby2d/quad'
-require 'ruby2d/line'
-require 'ruby2d/circle'
-require 'ruby2d/rectangle'
-require 'ruby2d/square'
-require 'ruby2d/triangle'
-require 'ruby2d/image'
-require 'ruby2d/sprite'
-require 'ruby2d/font'
-require 'ruby2d/text'
-require 'ruby2d/sound'
-require 'ruby2d/music'
-
-if RUBY_PLATFORM =~ /mingw/
-  # When using the Windows CI AppVeyor
-  if ENV['APPVEYOR']
-    s2d_dll_path = 'C:\msys64\usr\local\bin'
-  # When in a standard MinGW shell
-  else
-    s2d_dll_path = '~/../../usr/local/bin'
+unless RUBY_ENGINE == 'mruby'
+  require 'ruby2d/colorize'
+  require 'ruby2d/exceptions'
+  require 'ruby2d/renderable'
+  require 'ruby2d/color'
+  require 'ruby2d/window'
+  require 'ruby2d/dsl'
+  require 'ruby2d/quad'
+  require 'ruby2d/line'
+  require 'ruby2d/circle'
+  require 'ruby2d/rectangle'
+  require 'ruby2d/square'
+  require 'ruby2d/triangle'
+  require 'ruby2d/image'
+  require 'ruby2d/sprite'
+  require 'ruby2d/font'
+  require 'ruby2d/text'
+  require 'ruby2d/sound'
+  require 'ruby2d/music'
+
+  if RUBY_PLATFORM =~ /mingw/
+    # When using the Windows CI AppVeyor
+    if ENV['APPVEYOR']
+      s2d_dll_path = 'C:\msys64\usr\local\bin'
+    # When in a standard MinGW shell
+    else
+      s2d_dll_path = '~/../../usr/local/bin'
+    end
+    RubyInstaller::Runtime.add_dll_directory(File.expand_path(s2d_dll_path))
   end
-  RubyInstaller::Runtime.add_dll_directory(File.expand_path(s2d_dll_path))
+
+  require 'ruby2d/ruby2d'  # load native extension
 end
 
-require 'ruby2d/ruby2d'  # load native extension
+
+module Ruby2D
+
+  @assets = nil
+
+  class << self
+    def assets
+      unless @assets
+        if RUBY_ENGINE == 'mruby'
+          @assets = Ruby2D.ext_base_path + 'assets'
+        else
+          @assets = './assets'
+        end
+      end
+      @assets
+    end
+
+    def assets=(path); @assets = path end
+  end
+end
 
 include Ruby2D
 extend  Ruby2D::DSL