Remove trailing whitespace everywhere

It's what all the kids are doing

28 files changed, 323 insertions, 323 deletions

diff --git a/Rakefile b/Rakefile
index e7fbd2a..6125d4e 100644
--- a/Rakefile
+++ b/Rakefile
@@ -88,13 +88,13 @@ namespace :test do
     get_args
     run_mri_test ARGV[1]
   end
-  
+
   desc "Run native test"
   task :native do
     get_args
     run_native_test ARGV[1]
   end
-  
+
   desc "Run web test"
   task :web do
     get_args
diff --git a/bin/ruby2d b/bin/ruby2d
index aa486ea..03f455b 100755
--- a/bin/ruby2d
+++ b/bin/ruby2d
@@ -48,18 +48,18 @@ end
 # Assemble the Ruby 2D library in one `.rb` file
 def make_lib
   FileUtils.mkdir_p 'build'
-  
+
   lib_dir = "#{@gem_dir}/lib/ruby2d/"
-  
+
   lib = ""
   @lib_files.each do |f|
     lib << File.read("#{lib_dir + f}.rb") + "\n\n"
   end
-  
+
   lib << "
 include Ruby2D::DSL
 include Ruby2D\n"
-  
+
   File.write('build/lib.rb', lib)
 end
 
@@ -76,25 +76,25 @@ end
 
 # Build a native version of the provided Ruby application
 def build_native(rb_file)
-  
+
   # Check if MRuby exists; if not, quit
   if `which mruby`.empty?
     puts "#{'Error:'.error} Can't find MRuby, which is needed to build native Ruby 2D applications.\n"
     exit
   end
-  
+
   # Assemble the Ruby 2D library in one `.rb` file and compile to bytecode
   make_lib
   `mrbc -Bruby2d_lib -obuild/lib.c build/lib.rb`
-  
+
   # Read the provided Ruby source file, copy to build dir and compile to bytecode
-  
+
   File.open('build/src.rb', 'w') do |file|
     file << strip_require(rb_file)
   end
-  
+
   `mrbc -Bruby2d_app -obuild/src.c build/src.rb`
-  
+
   # Combine contents of C source files and bytecode into one file
   open('build/app.c', 'w') do |f|
     f << "#define MRUBY 1" << "\n\n"
@@ -102,10 +102,10 @@ def build_native(rb_file)
     f << File.read("build/src.c") << "\n\n"
     f << File.read("#{@gem_dir}/ext/ruby2d/ruby2d.c")
   end
-  
+
   # Compile to native executable
   `cc build/app.c -lmruby \`simple2d --libs\` -o build/app`
-  
+
   # Success!
   puts "Native app created at `build/app`"
 end
@@ -113,22 +113,22 @@ end
 
 # Build a web-based version of the provided Ruby application
 def build_web(rb_file)
-  
+
   # Assemble the Ruby 2D library in one `.rb` file and compile to JS
   make_lib
   `opal --compile --no-opal build/lib.rb > build/lib.js`
-  
+
   # Read the provided Ruby source file, copy to build dir, and compile to JS
-  
+
   File.open('build/src.rb', 'w') do |file|
     file << strip_require(rb_file)
   end
-  
+
   `opal --compile --no-opal build/src.rb > build/src.js`
-  
+
   FileUtils.cp "#{@gem_dir}/ext/ruby2d/ruby2d-opal.rb", "build/"
   `opal --compile --no-opal build/ruby2d-opal.rb > build/ruby2d-opal.js`
-  
+
   # Combine contents of JS source files and compiled JS into one file
   open('build/app.js', 'w') do |f|
     f << File.read("#{@gem_dir}/assets/simple2d.js") << "\n\n"
@@ -137,10 +137,10 @@ def build_web(rb_file)
     f << File.read("build/ruby2d-opal.js") << "\n\n"
     f << File.read("build/src.js") << "\n\n"
   end
-  
+
   # Copy over HTML template
   FileUtils.cp "#{@gem_dir}/assets/template.html", "build/app.html"
-  
+
   # Success!
   puts "Web app created at `build/app.js`",
        "  Run by opening `build/app.html`"
@@ -150,13 +150,13 @@ end
 # Build an application package for the current platform
 def build_package
   require 'fileutils'
-  
+
   icon_path = "#{@gem_dir}/assets/app.icns"
-  
+
   FileUtils.mkpath "build/App.app/Contents/MacOS"
   FileUtils.mkpath "build/App.app/Contents/Resources"
   FileUtils.cp icon_path, "build/App.app/Contents/Resources"
-  
+
   info_plist = %(
 <?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
@@ -177,7 +177,7 @@ def build_package
 </dict>
 </plist>
 )
-  
+
   File.open("build/App.app/Contents/Info.plist", 'w') { |f| f.write(info_plist) }
   FileUtils.cp "build/app", "build/App.app/Contents/MacOS/"
   puts "App written to `build/App.app`."
diff --git a/ext/ruby2d/extconf.rb b/ext/ruby2d/extconf.rb
index 1256333..1c3138e 100644
--- a/ext/ruby2d/extconf.rb
+++ b/ext/ruby2d/extconf.rb
@@ -32,10 +32,10 @@ case RUBY_PLATFORM
 
 # macOS
 when /darwin/
-  
+
   # Simple 2D not installed
   if `which simple2d`.empty?
-    
+
     # Homebrew not installed
     if `which brew`.empty?
       $errors << "Ruby 2D uses a native library called Simple 2D." <<
@@ -46,7 +46,7 @@ when /darwin/
                  "  brew install simple2d".bold
       print_errors
       exit
-      
+
     # Homebrew installed, instruct to install Simple 2D
     else
       $errors << "Ruby 2D uses a native library called Simple 2D." <<
@@ -57,10 +57,10 @@ when /darwin/
       exit
     end
   end
-  
+
 # Linux and Windows / MinGW
 when /linux|mingw/
-  
+
   # Simple 2D not installed
   if `which simple2d`.empty?
     $errors << "Ruby 2D uses a native library called Simple 2D.\n" <<
diff --git a/ext/ruby2d/ruby2d-opal.rb b/ext/ruby2d/ruby2d-opal.rb
index e160f77..534b01c 100644
--- a/ext/ruby2d/ruby2d-opal.rb
+++ b/ext/ruby2d/ruby2d-opal.rb
@@ -19,7 +19,7 @@ const $R2D_TEXT     = 6;
 
 
 function on_key(e) {
-  
+
   switch (e.type) {
     case S2D.KEY_DOWN:
       #{type = :down};
@@ -31,16 +31,16 @@ function on_key(e) {
       #{type = :up};
       break;
   }
-  
+
   #{$R2D_WINDOW.key_callback(type, `e.key`)};
 }
 
 
 function on_mouse(e) {
-  
+
   #{direction = nil}
   #{button    = nil}
-  
+
   switch (e.type) {
     case S2D.MOUSE_DOWN:
       #{type = :down};
@@ -56,7 +56,7 @@ function on_mouse(e) {
       #{type = :move};
       break;
   }
-  
+
   if (e.type == S2D.MOUSE_DOWN || e.type == S2D.MOUSE_UP) {
     switch (e.button) {
       case S2D.MOUSE_LEFT:
@@ -76,7 +76,7 @@ function on_mouse(e) {
         break;
     }
   }
-  
+
   #{$R2D_WINDOW.mouse_callback(
     type, button, direction,
     `e.x`, `e.y`, `e.delta_x`, `e.delta_y`
@@ -94,30 +94,30 @@ function update() {
 
 
 function render() {
-  
+
   // Set background color
   win.background.r = #{$R2D_WINDOW.get(:background).r};
   win.background.g = #{$R2D_WINDOW.get(:background).g};
   win.background.b = #{$R2D_WINDOW.get(:background).b};
   win.background.a = #{$R2D_WINDOW.get(:background).a};
-  
+
   var objects = #{$R2D_WINDOW.objects};
-  
+
   for (var i = 0; i < objects.length; i++) {
-    
+
     var el = objects[i];
-    
+
     switch (el.type_id) {
-      
+
       case $R2D_TRIANGLE:
-        
+
         S2D.DrawTriangle(
           el.x1, el.y1, el.c1.r, el.c1.g, el.c1.b, el.c1.a,
           el.x2, el.y2, el.c2.r, el.c2.g, el.c2.b, el.c2.a,
           el.x3, el.y3, el.c3.r, el.c3.g, el.c3.b, el.c3.a
         );
         break;
-      
+
       case $R2D_QUAD:
         S2D.DrawQuad(
           el.x1, el.y1, el.c1.r, el.c1.g, el.c1.b, el.c1.a,
@@ -126,7 +126,7 @@ function render() {
           el.x4, el.y4, el.c4.r, el.c4.g, el.c4.b, el.c4.a
         );
         break;
-      
+
       case $R2D_LINE:
         S2D.DrawLine(
           el.x1, el.y1, el.x2, el.y2, el.width,
@@ -136,26 +136,26 @@ function render() {
           el.c4.r, el.c4.g, el.c4.b, el.c4.a
         );
         break;
-      
+
       case $R2D_IMAGE:
         el.data.x = el.x;
         el.data.y = el.y;
-        
+
         if (el.width  != Opal.nil) el.data.width  = el.width;
         if (el.height != Opal.nil) el.data.height = el.height;
-        
+
         el.data.color.r = el.color.r;
         el.data.color.g = el.color.g;
         el.data.color.b = el.color.b;
         el.data.color.a = el.color.a;
-        
+
         S2D.DrawImage(el.data);
         break;
-      
+
       case $R2D_SPRITE:
         el.data.x = el.x;
         el.data.y = el.y;
-        
+
         S2D.ClipSprite(
           el.data,
           el.clip_x,
@@ -163,23 +163,23 @@ function render() {
           el.clip_w,
           el.clip_h
         );
-        
+
         S2D.DrawSprite(el.data);
         break;
-      
+
       case $R2D_TEXT:
         el.data.x = el.x;
         el.data.y = el.y;
-        
+
         el.data.color.r = el.color.r;
         el.data.color.g = el.color.g;
         el.data.color.b = el.color.b;
         el.data.color.a = el.color.a;
-        
+
         S2D.DrawText(el.data);
         break;
     }
-    
+
   }
 }`
 
@@ -197,86 +197,86 @@ module Ruby2D
       });`
     end
   end
-  
+
   class Sprite
     def ext_sprite_init(path)
       `#{self}.data = S2D.CreateSprite(path);`
     end
   end
-  
+
   class Text
     def ext_text_init
       `#{self}.data = S2D.CreateText(#{self}.font, #{self}.text, #{self}.size);`
       @width  = `#{self}.data.width;`
       @height = `#{self}.data.height;`
     end
-    
+
     def ext_text_set(msg)
       `S2D.SetText(#{self}.data, #{msg});`
       @width  = `#{self}.data.width;`
       @height = `#{self}.data.height;`
     end
   end
-  
+
   class Sound
     def ext_sound_init(path)
       `#{self}.data = S2D.CreateSound(path);`
     end
-    
+
     def ext_sound_play
       `S2D.PlaySound(#{self}.data);`
     end
   end
-  
+
   class Music
     def ext_music_init(path)
       `#{self}.data = S2D.CreateMusic(path);`
     end
-    
+
     def ext_music_play
       `S2D.PlayMusic(#{self}.data, #{self}.loop);`
     end
-    
+
     def ext_music_pause
       `S2D.PauseMusic();`
     end
-    
+
     def ext_music_resume
       `S2D.ResumeMusic();`
     end
-    
+
     def ext_music_stop
       `S2D.StopMusic();`
     end
-    
+
     def ext_music_fadeout(ms)
       `S2D.FadeOutMusic(ms);`
     end
   end
-  
+
   class Window
     def ext_window_show
       $R2D_WINDOW = self
-      
+
       `
       var width  = #{$R2D_WINDOW.get(:width)};
       var height = #{$R2D_WINDOW.get(:height)};
-      
+
       var vp_w = #{$R2D_WINDOW.get(:viewport_width)};
       var viewport_width = vp_w != Opal.nil ? vp_w : width;
-      
+
       var vp_h = #{$R2D_WINDOW.get(:viewport_height)};
       var viewport_height = vp_h != Opal.nil ? vp_h : height;
-      
+
       win = S2D.CreateWindow(
         #{$R2D_WINDOW.get(:title)}, width, height, update, render, "ruby2d-app", {}
       );
-      
+
       win.viewport.width  = viewport_width;
       win.viewport.height = viewport_height;
       win.on_key          = on_key;
       win.on_mouse        = on_mouse;
-      
+
       S2D.Show(win);`
     end
   end
diff --git a/ext/ruby2d/ruby2d.c b/ext/ruby2d/ruby2d.c
index 29aae4f..3aad03e 100644
--- a/ext/ruby2d/ruby2d.c
+++ b/ext/ruby2d/ruby2d.c
@@ -241,16 +241,16 @@ static R_VAL ruby2d_text_init(R_VAL self) {
 #endif
   sprintf(S2D_msg, "Init text: %s", RSTRING_PTR(r_iv_get(self, "@text")));
   S2D_Log(S2D_msg, S2D_INFO);
-  
+
   S2D_Text *txt = S2D_CreateText(
     RSTRING_PTR(r_iv_get(self, "@font")),
     RSTRING_PTR(r_iv_get(self, "@text")),
     NUM2DBL(r_iv_get(self, "@size"))
   );
-  
+
   r_iv_set(self, "@width", INT2NUM(txt->width));
   r_iv_set(self, "@height", INT2NUM(txt->height));
-  
+
   r_iv_set(self, "@data", r_data_wrap_struct(text, txt));
   return R_NIL;
 }
@@ -268,12 +268,12 @@ static R_VAL ruby2d_text_set(R_VAL self, R_VAL text) {
 #endif
   S2D_Text *txt;
   r_data_get_struct(self, "@data", &text_data_type, S2D_Text, txt);
-  
+
   S2D_SetText(txt, RSTRING_PTR(text));
-  
+
   r_iv_set(self, "@width", INT2NUM(txt->width));
   r_iv_set(self, "@height", INT2NUM(txt->height));
-  
+
   return R_NIL;
 }
 
@@ -449,9 +449,9 @@ static void free_music(S2D_Music *mus) {
  * Simple 2D `on_key` input callback function
  */
 static void on_key(S2D_Event e) {
-  
+
   R_VAL type;
-  
+
   switch (e.type) {
     case S2D_KEY_DOWN:
       type = r_char_to_sym("down");
@@ -463,7 +463,7 @@ static void on_key(S2D_Event e) {
       type = r_char_to_sym("up");
       break;
   }
-  
+
   r_funcall(ruby2d_window, "key_callback", 2, type, r_str_new(e.key));
 }
 
@@ -472,9 +472,9 @@ static void on_key(S2D_Event e) {
  * Simple 2D `on_mouse` input callback function
  */
 void on_mouse(S2D_Event e) {
-  
+
   R_VAL type = R_NIL; R_VAL button = R_NIL; R_VAL direction = R_NIL;
-  
+
   switch (e.type) {
     case S2D_MOUSE_DOWN:
       // type, button, x, y
@@ -495,7 +495,7 @@ void on_mouse(S2D_Event e) {
       type = r_char_to_sym("move");
       break;
   }
-  
+
   if (e.type == S2D_MOUSE_DOWN || e.type == S2D_MOUSE_UP) {
     switch (e.button) {
       case S2D_MOUSE_LEFT:
@@ -515,10 +515,10 @@ void on_mouse(S2D_Event e) {
         break;
     }
   }
-  
+
   // Bug in MRuby: If `button` or `direction` are symbols (created with
   // r_char_to_sym), they will always both be `nil`. Use `r_str_new` for now.
-  
+
   r_funcall(
     ruby2d_window, "mouse_callback", 7, type, button, direction,
     INT2NUM(e.x), INT2NUM(e.y), INT2NUM(e.delta_x), INT2NUM(e.delta_y)
@@ -530,9 +530,9 @@ void on_mouse(S2D_Event e) {
  * Simple 2D `on_controller` input callback function
  */
 static void on_controller(S2D_Event e) {
-  
+
   R_VAL type = R_NIL;
-  
+
   switch (e.type) {
     case S2D_AXIS:
       type = r_char_to_sym("axis");
@@ -544,7 +544,7 @@ static void on_controller(S2D_Event e) {
       type = r_char_to_sym("button_up");
       break;
   }
-  
+
   r_funcall(
     ruby2d_window, "controller_callback", 5, INT2NUM(e.which), type,
     INT2NUM(e.axis), INT2NUM(e.value), INT2NUM(e.button)
@@ -556,17 +556,17 @@ static void on_controller(S2D_Event e) {
  * Simple 2D `update` callback function
  */
 static void update() {
-  
+
   // Set the cursor
   r_iv_set(ruby2d_window, "@mouse_x", INT2NUM(window->mouse.x));
   r_iv_set(ruby2d_window, "@mouse_y", INT2NUM(window->mouse.y));
-  
+
   // Store frames
   r_iv_set(ruby2d_window, "@frames", DBL2NUM(window->frames));
-  
+
   // Store frame rate
   r_iv_set(ruby2d_window, "@fps", DBL2NUM(window->fps));
-  
+
   // Call update proc, `window.update`
   r_funcall(ruby2d_window, "update_callback", 0);
 }
@@ -576,32 +576,32 @@ static void update() {
  * Simple 2D `render` callback function
  */
 static void render() {
-  
+
   // Set background color
   R_VAL bc = r_iv_get(ruby2d_window, "@background");
   window->background.r = NUM2DBL(r_iv_get(bc, "@r"));
   window->background.g = NUM2DBL(r_iv_get(bc, "@g"));
   window->background.b = NUM2DBL(r_iv_get(bc, "@b"));
   window->background.a = NUM2DBL(r_iv_get(bc, "@a"));
-  
+
   // Read window objects
   R_VAL objects = r_iv_get(ruby2d_window, "@objects");
   int num_objects = NUM2INT(r_funcall(objects, "length", 0));
-  
+
   // Switch on each object type
   for (int i = 0; i < num_objects; ++i) {
-    
+
     R_VAL el = r_ary_entry(objects, i);
     int type_id = NUM2INT(r_iv_get(el, "@type_id"));
-    
+
     // Switch on the object's type_id
     switch(type_id) {
-      
+
       case R2D_TRIANGLE: {
         R_VAL c1 = r_iv_get(el, "@c1");
         R_VAL c2 = r_iv_get(el, "@c2");
         R_VAL c3 = r_iv_get(el, "@c3");
-        
+
         S2D_DrawTriangle(
           NUM2DBL(r_iv_get(el, "@x1")),
           NUM2DBL(r_iv_get(el, "@y1")),
@@ -609,14 +609,14 @@ static void render() {
           NUM2DBL(r_iv_get(c1, "@g")),
           NUM2DBL(r_iv_get(c1, "@b")),
           NUM2DBL(r_iv_get(c1, "@a")),
-          
+
           NUM2DBL(r_iv_get(el, "@x2")),
           NUM2DBL(r_iv_get(el, "@y2")),
           NUM2DBL(r_iv_get(c2, "@r")),
           NUM2DBL(r_iv_get(c2, "@g")),
           NUM2DBL(r_iv_get(c2, "@b")),
           NUM2DBL(r_iv_get(c2, "@a")),
-          
+
           NUM2DBL(r_iv_get(el, "@x3")),
           NUM2DBL(r_iv_get(el, "@y3")),
           NUM2DBL(r_iv_get(c3, "@r")),
@@ -626,13 +626,13 @@ static void render() {
         );
       }
       break;
-      
+
       case R2D_QUAD: {
         R_VAL c1 = r_iv_get(el, "@c1");
         R_VAL c2 = r_iv_get(el, "@c2");
         R_VAL c3 = r_iv_get(el, "@c3");
         R_VAL c4 = r_iv_get(el, "@c4");
-        
+
         S2D_DrawQuad(
           NUM2DBL(r_iv_get(el, "@x1")),
           NUM2DBL(r_iv_get(el, "@y1")),
@@ -640,21 +640,21 @@ static void render() {
           NUM2DBL(r_iv_get(c1, "@g")),
           NUM2DBL(r_iv_get(c1, "@b")),
           NUM2DBL(r_iv_get(c1, "@a")),
-          
+
           NUM2DBL(r_iv_get(el, "@x2")),
           NUM2DBL(r_iv_get(el, "@y2")),
           NUM2DBL(r_iv_get(c2, "@r")),
           NUM2DBL(r_iv_get(c2, "@g")),
           NUM2DBL(r_iv_get(c2, "@b")),
           NUM2DBL(r_iv_get(c2, "@a")),
-          
+
           NUM2DBL(r_iv_get(el, "@x3")),
           NUM2DBL(r_iv_get(el, "@y3")),
           NUM2DBL(r_iv_get(c3, "@r")),
           NUM2DBL(r_iv_get(c3, "@g")),
           NUM2DBL(r_iv_get(c3, "@b")),
           NUM2DBL(r_iv_get(c3, "@a")),
-          
+
           NUM2DBL(r_iv_get(el, "@x4")),
           NUM2DBL(r_iv_get(el, "@y4")),
           NUM2DBL(r_iv_get(c4, "@r")),
@@ -664,35 +664,35 @@ static void render() {
         );
       }
       break;
-      
+
       case R2D_LINE: {
         R_VAL c1 = r_iv_get(el, "@c1");
         R_VAL c2 = r_iv_get(el, "@c2");
         R_VAL c3 = r_iv_get(el, "@c3");
         R_VAL c4 = r_iv_get(el, "@c4");
-        
+
         S2D_DrawLine(
           NUM2DBL(r_iv_get(el, "@x1")),
           NUM2DBL(r_iv_get(el, "@y1")),
           NUM2DBL(r_iv_get(el, "@x2")),
           NUM2DBL(r_iv_get(el, "@y2")),
           NUM2DBL(r_iv_get(el, "@width")),
-          
+
           NUM2DBL(r_iv_get(c1, "@r")),
           NUM2DBL(r_iv_get(c1, "@g")),
           NUM2DBL(r_iv_get(c1, "@b")),
           NUM2DBL(r_iv_get(c1, "@a")),
-          
+
           NUM2DBL(r_iv_get(c2, "@r")),
           NUM2DBL(r_iv_get(c2, "@g")),
           NUM2DBL(r_iv_get(c2, "@b")),
           NUM2DBL(r_iv_get(c2, "@a")),
-          
+
           NUM2DBL(r_iv_get(c3, "@r")),
           NUM2DBL(r_iv_get(c3, "@g")),
           NUM2DBL(r_iv_get(c3, "@b")),
           NUM2DBL(r_iv_get(c3, "@a")),
-          
+
           NUM2DBL(r_iv_get(c4, "@r")),
           NUM2DBL(r_iv_get(c4, "@g")),
           NUM2DBL(r_iv_get(c4, "@b")),
@@ -700,36 +700,36 @@ static void render() {
         );
       }
       break;
-      
+
       case R2D_IMAGE: {
         S2D_Image *img;
         r_data_get_struct(el, "@data", &image_data_type, S2D_Image, img);
-        
+
         img->x = NUM2DBL(r_iv_get(el, "@x"));
         img->y = NUM2DBL(r_iv_get(el, "@y"));
-        
+
         R_VAL w = r_iv_get(el, "@width");
         R_VAL h = r_iv_get(el, "@height");
         if (r_test(w)) img->width  = NUM2INT(w);
         if (r_test(h)) img->height = NUM2INT(h);
-        
+
         R_VAL c = r_iv_get(el, "@color");
         img->color.r = NUM2DBL(r_iv_get(c, "@r"));
         img->color.g = NUM2DBL(r_iv_get(c, "@g"));
         img->color.b = NUM2DBL(r_iv_get(c, "@b"));
         img->color.a = NUM2DBL(r_iv_get(c, "@a"));
-        
+
         S2D_DrawImage(img);
       }
       break;
-      
+
       case R2D_SPRITE: {
         S2D_Sprite *spr;
         r_data_get_struct(el, "@data", &sprite_data_type, S2D_Sprite, spr);
-        
+
         spr->x = NUM2DBL(r_iv_get(el, "@x"));
         spr->y = NUM2DBL(r_iv_get(el, "@y"));
-        
+
         S2D_ClipSprite(
           spr,
           NUM2INT(r_iv_get(el, "@clip_x")),
@@ -737,24 +737,24 @@ static void render() {
           NUM2INT(r_iv_get(el, "@clip_w")),
           NUM2INT(r_iv_get(el, "@clip_h"))
         );
-        
+
         S2D_DrawSprite(spr);
       }
       break;
-      
+
       case R2D_TEXT: {
         S2D_Text *txt;
         r_data_get_struct(el, "@data", &text_data_type, S2D_Text, txt);
-        
+
         txt->x = NUM2DBL(r_iv_get(el, "@x"));
         txt->y = NUM2DBL(r_iv_get(el, "@y"));
-        
+
         R_VAL c = r_iv_get(el, "@color");
         txt->color.r = NUM2DBL(r_iv_get(c, "@r"));
         txt->color.g = NUM2DBL(r_iv_get(c, "@g"));
         txt->color.b = NUM2DBL(r_iv_get(c, "@b"));
         txt->color.a = NUM2DBL(r_iv_get(c, "@a"));
-        
+
         S2D_DrawText(txt);
       }
       break;
@@ -772,17 +772,17 @@ static R_VAL ruby2d_show(mrb_state* mrb, R_VAL self) {
 static R_VAL ruby2d_show(R_VAL self) {
 #endif
   ruby2d_window = self;
-  
+
   if (r_test(r_iv_get(self, "@diagnostics"))) {
     S2D_Diagnostics(true);
   }
-  
+
   // Get window attributes
   char *title = RSTRING_PTR(r_iv_get(self, "@title"));
   int width   = NUM2INT(r_iv_get(self, "@width"));
   int height  = NUM2INT(r_iv_get(self, "@height"));
   int flags   = 0;
-  
+
   // Get window flags
   if (r_test(r_iv_get(self, "@resizable"))) {
     flags = flags | S2D_RESIZABLE;
@@ -796,29 +796,29 @@ static R_VAL ruby2d_show(R_VAL self) {
   if (r_test(r_iv_get(self, "@highdpi"))) {
     flags = flags | S2D_HIGHDPI;
   }
-  
+
   // Check viewport size and set
-  
+
   R_VAL vp_w = r_iv_get(self, "@viewport_width");
   int viewport_width = r_test(vp_w) ? NUM2INT(vp_w) : width;
-  
+
   R_VAL vp_h = r_iv_get(self, "@viewport_height");
   int viewport_height = r_test(vp_h) ? NUM2INT(vp_h) : height;
-  
+
   // Create and show window
-  
+
   window = S2D_CreateWindow(
     title, width, height, update, render, flags
   );
-  
+
   window->viewport.width  = viewport_width;
   window->viewport.height = viewport_height;
   window->on_key          = on_key;
   window->on_mouse        = on_mouse;
   window->on_controller   = on_controller;
-  
+
   S2D_Show(window);
-  
+
   atexit(free_window);
   return R_NIL;
 }
@@ -841,91 +841,91 @@ int main(void) {
   // Open the MRuby environment
   mrb = mrb_open();
   if (!mrb) { /* handle error */ }
-  
+
   // Load the Ruby 2D library
   mrb_load_irep(mrb, ruby2d_lib);
-  
+
   // Add missing MRuby classes, methods
   R_CLASS file_class = mrb_define_class(mrb, "File", mrb->object_class);
   mrb_define_class_method(mrb, file_class, "exists?", file_exists, r_args_req(1));
-  
+
 #else
 /*
  * Ruby C extension init
  */
 void Init_ruby2d() {
 #endif
-  
+
   // Ruby2D
   R_CLASS ruby2d_module = r_define_module("Ruby2D");
-  
+
   // Ruby2D::Image
   R_CLASS ruby2d_image_class = r_define_class(ruby2d_module, "Image");
-  
+
   // Ruby2D::Image#init
   r_define_method(ruby2d_image_class, "ext_image_init", ruby2d_image_init, r_args_req(1));
-  
+
   // Ruby2D::Sprite
   R_CLASS ruby2d_sprite_class = r_define_class(ruby2d_module, "Sprite");
-  
+
   // Ruby2D::Sprite#init
   r_define_method(ruby2d_sprite_class, "ext_sprite_init", ruby2d_sprite_init, r_args_req(1));
-  
+
   // Ruby2D::Text
   R_CLASS ruby2d_text_class = r_define_class(ruby2d_module, "Text");
-  
+
   // Ruby2D::Text#init
   r_define_method(ruby2d_text_class, "ext_text_init", ruby2d_text_init, r_args_none);
-  
+
   // Ruby2D::Text#ext_text_set
   r_define_method(ruby2d_text_class, "ext_text_set", ruby2d_text_set, r_args_req(1));
-  
+
   // Ruby2D::Sound
   R_CLASS ruby2d_sound_class = r_define_class(ruby2d_module, "Sound");
-  
+
   // Ruby2D::Sound#init
   r_define_method(ruby2d_sound_class, "ext_sound_init", ruby2d_sound_init, r_args_req(1));
-  
+
   // Ruby2D::Sound#play
   r_define_method(ruby2d_sound_class, "ext_sound_play", ruby2d_sound_play, r_args_none);
-  
+
   // Ruby2D::Music
   R_CLASS ruby2d_music_class = r_define_class(ruby2d_module, "Music");
-  
+
   // Ruby2D::Music#init
   r_define_method(ruby2d_music_class, "ext_music_init", ruby2d_music_init, r_args_req(1));
-  
+
   // Ruby2D::Music#play
   r_define_method(ruby2d_music_class, "ext_music_play", ruby2d_music_play, r_args_none);
-  
+
   // Ruby2D::Music#pause
   r_define_method(ruby2d_music_class, "ext_music_pause", ruby2d_music_pause, r_args_none);
-  
+
   // Ruby2D::Music#resume
   r_define_method(ruby2d_music_class, "ext_music_resume", ruby2d_music_resume, r_args_none);
-  
+
   // Ruby2D::Music#stop
   r_define_method(ruby2d_music_class, "ext_music_stop", ruby2d_music_stop, r_args_none);
-  
+
   // Ruby2D::Music#fadeout
   r_define_method(ruby2d_music_class, "ext_music_fadeout", ruby2d_music_fadeout, r_args_req(1));
-  
+
   // Ruby2D::Window
   R_CLASS ruby2d_window_class = r_define_class(ruby2d_module, "Window");
-  
+
   // Ruby2D::Window#show
   r_define_method(ruby2d_window_class, "ext_window_show", ruby2d_show, r_args_none);
-  
+
   // Ruby2D::Window#close
   r_define_method(ruby2d_window_class, "ext_window_close", ruby2d_close, r_args_none);
-  
+
 #if MRUBY
   // Load the Ruby 2D app
   mrb_load_irep(mrb, ruby2d_app);
-  
+
   // If an exception, print error
   if (mrb->exc) mrb_print_error(mrb);
-  
+
   // Close the MRuby environment
   mrb_close(mrb);
 #endif
diff --git a/lib/ruby2d/application.rb b/lib/ruby2d/application.rb
index 9984399..d04af70 100644
--- a/lib/ruby2d/application.rb
+++ b/lib/ruby2d/application.rb
@@ -3,43 +3,43 @@
 module Ruby2D::Application
   class << self
     @@window = Ruby2D::Window.new
-    
+
     def get(sym)
       @@window.get(sym)
     end
-    
+
     def set(opts)
       @@window.set(opts)
     end
-    
+
     def on(event, &proc)
       @@window.on(event, &proc)
     end
-    
+
     def off(event_descriptor)
       @@window.off(event_descriptor)
     end
-    
+
     def add(o)
       @@window.add(o)
     end
-    
+
     def remove(o)
       @@window.remove(o)
     end
-    
+
     def clear
       @@window.clear
     end
-    
+
     def update(&proc)
       @@window.update(&proc)
     end
-    
+
     def show
       @@window.show
     end
-    
+
     def close
       @@window.close
     end
diff --git a/lib/ruby2d/color.rb b/lib/ruby2d/color.rb
index 1103c1b..768ebce 100644
--- a/lib/ruby2d/color.rb
+++ b/lib/ruby2d/color.rb
@@ -15,18 +15,18 @@ module Ruby2D
       def length
         @colors.length
       end
-      
+
       def opacity; @colors[0].opacity end
-      
+
       def opacity=(opacity)
         @colors.each do |color|
           color.opacity = opacity
         end
       end
     end
-    
+
     attr_reader :r, :g, :b, :a
-    
+
     # Based on clrs.cc
     @@colors = {
       'navy'    => '#001F3F',
@@ -49,7 +49,7 @@ module Ruby2D
       'black'   => '#111111',
       'random'  => ''
     }
-    
+
     def initialize(c)
       if !self.class.is_valid? c
         raise Error, "`#{c}` is not a valid color"
@@ -68,19 +68,19 @@ module Ruby2D
         end
       end
     end
-    
+
     # Check if string is a proper hex value
     def self.is_hex?(s)
       # MRuby doesn't support regex, otherwise we'd do:
       #   !(/^#[0-9A-F]{6}$/i.match(a).nil?)
       s.class == String && s[0] == '#' && s.length == 7
     end
-    
+
     # Check if the color is valid
     def self.is_valid?(c)
       @@colors.key?(c) ||  # keyword
       self.is_hex?(c)  ||  # hexadecimal value
-      
+
       # Array of Floats from 0.0..1.0
       c.class == Array && c.length == 4 &&
       c.all? { |el|
@@ -97,15 +97,15 @@ module Ruby2D
         Color.new(input)
       end
     end
-    
+
     def opacity; @a end
-    
+
     def opacity=(opacity)
       @a = opacity
     end
-    
+
     private
-    
+
     # TODO: Only `Number` supported in JS
     # Convert from Fixnum (0..255) to Float (0.0..1.0)
     def to_f(a)
@@ -115,19 +115,19 @@ module Ruby2D
       end
       return b
     end
-    
+
     # Convert from hex value (e.g. #FFF000) to Float (0.0..1.0)
     def hex_to_f(h)
       h = (h[1..-1]).chars.each_slice(2).map(&:join)
       a = []
-      
+
       h.each do |el|
         a.push(el.to_i(16))
       end
-      
+
       a.push(255)
       return to_f(a)
     end
-    
+
   end
 end
diff --git a/lib/ruby2d/dsl.rb b/lib/ruby2d/dsl.rb
index 2d55f22..aeca4fa 100644
--- a/lib/ruby2d/dsl.rb
+++ b/lib/ruby2d/dsl.rb
@@ -4,33 +4,33 @@ module Ruby2D::DSL
   def get(sym)
     Application.get(sym)
   end
-  
+
   def set(opts)
     Application.set(opts)
   end
-  
+
   def on(event, &proc)
     Application.on(event, &proc)
   end
-  
+
   def off(event_descriptor)
     Application.off(event_descriptor)
   end
-  
+
   def update(&proc)
     Application.update(&proc)
   end
-  
+
   def clear
     Application.clear
   end
-  
+
   def show
     Application.show
   end
-  
+
   def close
     Application.close
   end
-  
+
 end
diff --git a/lib/ruby2d/image.rb b/lib/ruby2d/image.rb
index 89c447b..6660a4d 100644
--- a/lib/ruby2d/image.rb
+++ b/lib/ruby2d/image.rb
@@ -6,15 +6,15 @@ module Ruby2D
 
     attr_accessor :x, :y, :width, :height, :data
     attr_reader :path, :color
-    
+
     def initialize(x, y, path, z=0)
-      
+
       unless RUBY_ENGINE == 'opal'
         unless File.exists? path
           raise Error, "Cannot find image file `#{path}`"
         end
       end
-      
+
       @type_id = 4
       @x, @y, @path = x, y, path
       @z = z
@@ -22,7 +22,7 @@ module Ruby2D
       ext_image_init(path)
       add
     end
-    
+
     def color=(c)
       @color = Color.new(c)
     end
diff --git a/lib/ruby2d/line.rb b/lib/ruby2d/line.rb
index 4832379..9ef534e 100644
--- a/lib/ruby2d/line.rb
+++ b/lib/ruby2d/line.rb
@@ -13,14 +13,14 @@ module Ruby2D
       self.color = c
       add
     end
-    
+
     def color=(c)
       @color = Color.from(c)
       update_color(@color)
     end
-    
+
     private
-    
+
     def update_color(c)
       if c.is_a? Color::Set
         if c.length == 4
diff --git a/lib/ruby2d/music.rb b/lib/ruby2d/music.rb
index bd7df45..2437019 100644
--- a/lib/ruby2d/music.rb
+++ b/lib/ruby2d/music.rb
@@ -2,39 +2,39 @@
 
 module Ruby2D
   class Music
-    
+
     attr_accessor :data, :loop
     attr_reader :path
-    
+
     def initialize(path)
-      
+
       unless RUBY_ENGINE == 'opal'
         unless File.exists? path
           raise Error, "Cannot find audio file `#{path}`"
         end
       end
-      
+
       @path = path
       @loop = false
       ext_music_init(path)
     end
-    
+
     def play
       ext_music_play
     end
-    
+
     def pause
       ext_music_pause
     end
-    
+
     def resume
       ext_music_resume
     end
-    
+
     def stop
       ext_music_stop
     end
-    
+
     def fadeout(ms)
       ext_music_fadeout(ms)
     end
diff --git a/lib/ruby2d/quad.rb b/lib/ruby2d/quad.rb
index 60994a5..e3906c0 100644
--- a/lib/ruby2d/quad.rb
+++ b/lib/ruby2d/quad.rb
@@ -1,7 +1,7 @@
 # quad.rb
 
 module Ruby2D
-  class Quad 
+  class Quad
     include Renderable
     # Coordinates in clockwise order, starting at top left:
     # x1,y1 == top left
@@ -12,25 +12,25 @@ module Ruby2D
                   :x2, :y2, :c2,
                   :x3, :y3, :c3,
                   :x4, :y4, :c4
-    
+
     attr_reader :color
-    
+
     def initialize(x1=0, y1=0, x2=100, y2=0, x3=100, y3=100, x4=100, y4=100, c='white', z=0)
       @type_id = 2
       @x1, @y1, @x2, @y2, @x3, @y3, @x4, @y4 = x1, y1, x2, y2, x3, y3, x4, y4
       @z = z
-      
+
       self.color = c
       add
     end
-    
+
     def color=(c)
       @color = Color.from(c)
       update_color(@color)
     end
-    
+
     private
-    
+
     def update_color(c)
       if c.is_a? Color::Set
         if c.length == 4
diff --git a/lib/ruby2d/rectangle.rb b/lib/ruby2d/rectangle.rb
index 37ff3c7..569b8b5 100644
--- a/lib/ruby2d/rectangle.rb
+++ b/lib/ruby2d/rectangle.rb
@@ -2,9 +2,9 @@
 
 module Ruby2D
   class Rectangle < Quad
-    
+
     attr_reader :x, :y, :width, :height
-    
+
     def initialize(x=0, y=0, w=200, h=100, c='white', z=0)
       @type_id = 2
       @x, @y, @width, @height = x, y, w, h
@@ -14,33 +14,33 @@ module Ruby2D
       self.color = c
       add
     end
-    
+
     def x=(x)
       @x = @x1 = x
       @x2 = x + @width
       @x3 = x + @width
       @x4 = x
     end
-    
+
     def y=(y)
       @y = @y1 = y
       @y2 = y
       @y3 = y + @height
       @y4 = y + @height
     end
-    
+
     def width=(w)
       @width = w
       update_coords(@x, @y, w, @height)
     end
-    
+
     def height=(h)
       @height = h
       update_coords(@x, @y, @width, h)
     end
-    
+
     private
-    
+
     def update_coords(x, y, w, h)
       @x1 = x
       @y1 = y
@@ -51,6 +51,6 @@ module Ruby2D
       @x3 = x + w
       @y3 = y + h
     end
-    
+
   end
 end
diff --git a/lib/ruby2d/renderable.rb b/lib/ruby2d/renderable.rb
index 888c29f..d80482a 100644
--- a/lib/ruby2d/renderable.rb
+++ b/lib/ruby2d/renderable.rb
@@ -13,17 +13,17 @@ module Ruby2D
         Application.add(self)
       end
     end
-    
+
     def remove
       if Module.const_defined? :DSL
         Application.remove(self)
       end
     end
-    
+
     def opacity
       self.color.opacity
     end
-    
+
     def opacity=(val)
       self.color.opacity = val
     end
diff --git a/lib/ruby2d/sound.rb b/lib/ruby2d/sound.rb
index 776d718..c7b03e6 100644
--- a/lib/ruby2d/sound.rb
+++ b/lib/ruby2d/sound.rb
@@ -2,25 +2,25 @@
 
 module Ruby2D
   class Sound
-    
+
     attr_accessor :data
     attr_reader :path
-    
+
     def initialize(path)
-      
+
       unless RUBY_ENGINE == 'opal'
         unless File.exists? path
           raise Error, "Cannot find audio file `#{path}`"
         end
       end
-      
+
       @path = path
       ext_sound_init(path)
     end
-    
+
     def play
       ext_sound_play
     end
-    
+
   end
 end
diff --git a/lib/ruby2d/sprite.rb b/lib/ruby2d/sprite.rb
index 4d6ac23..999e66d 100644
--- a/lib/ruby2d/sprite.rb
+++ b/lib/ruby2d/sprite.rb
@@ -2,7 +2,7 @@
 
 module Ruby2D
   class Sprite
-    
+
     attr_accessor :x, :y, :clip_x, :clip_y, :clip_w, :clip_h, :data
     attr_reader :z
 
@@ -11,7 +11,7 @@ module Ruby2D
       # unless File.exists? path
       #   raise Error, "Cannot find image file `#{path}`"
       # end
-      
+
       @type_id = 5
       @x, @y, @path = x, y, path
       @clip_x, @clip_y, @clip_w, @clip_h = 0, 0, 0, 0
@@ -27,16 +27,16 @@ module Ruby2D
         Application.add(self)
       end
     end
-    
+
     def start(x, y, w, h)
       @default = [x, y, w, h]
       clip(x, y, w, h)
     end
-    
+
     def add(animations)
       @animations.merge!(animations)
     end
-    
+
     def animate(animation)
       if @current_animation != animation
         @current_frame      = 0
@@ -45,31 +45,31 @@ module Ruby2D
       end
       animate_frames(@animations[animation])
     end
-    
+
     def reset
       clip(@default[0], @default[1], @default[2], @default[3])
       @current_animation = nil
     end
-    
+
     # TODO: Sprite already has an `add` method, have to reconsile
     # def add
     #   if Module.const_defined? :DSL
     #     Application.add(self)
     #   end
     # end
-    
+
     def remove
       if Module.const_defined? :DSL
         Application.remove(self)
       end
     end
-    
+
     private
-    
+
     def clip(x, y, w, h)
       @clip_x, @clip_y, @clip_w, @clip_h = x, y, w, h
     end
-    
+
     def animate_frames(frames)
       if @current_frame_time < frames[@current_frame][4]
         clip_with_current_frame(frames)
@@ -83,11 +83,11 @@ module Ruby2D
         @current_frame_time = 0
       end
     end
-    
+
     def clip_with_current_frame(frames)
       clip(frames[@current_frame][0], frames[@current_frame][1],
            frames[@current_frame][2], frames[@current_frame][3])
     end
-    
+
   end
 end
diff --git a/lib/ruby2d/square.rb b/lib/ruby2d/square.rb
index 66347ec..26a929d 100644
--- a/lib/ruby2d/square.rb
+++ b/lib/ruby2d/square.rb
@@ -2,9 +2,9 @@
 
 module Ruby2D
   class Square < Rectangle
-    
+
     attr_reader :size
-    
+
     def initialize(x=0, y=0, s=100, c='white', z=0)
       @type_id = 2
       @x, @y = x, y
@@ -15,11 +15,11 @@ module Ruby2D
       self.color = c
       add
     end
-    
+
     def size=(s)
       self.width = self.height = @size = s
     end
-    
+
     private :width=, :height=
   end
 end
diff --git a/lib/ruby2d/text.rb b/lib/ruby2d/text.rb
index 022f79c..d3c525f 100644
--- a/lib/ruby2d/text.rb
+++ b/lib/ruby2d/text.rb
@@ -3,18 +3,18 @@
 module Ruby2D
   class Text
     include Renderable
-    
+
     attr_accessor :x, :y, :data
     attr_reader :text, :size, :width, :height, :font, :color
-    
+
     def initialize(x=0, y=0, text="Hello World!", size=20, font=nil, c='white', z=0)
-      
+
       # if File.exists? font
         @font = font
       # else
       #   @font = resolve_path(font)
       # end
-      
+
       @type_id = 6
       @x, @y, @size = x, y, size
       @z = z
@@ -23,18 +23,18 @@ module Ruby2D
       ext_text_init
       add
     end
-    
+
     def text=(msg)
       @text = msg.to_s
       ext_text_set(@text)
     end
-    
+
     def color=(c)
       @color = Color.new(c)
     end
-    
+
     private
-    
+
     def resolve_path(font)
       if RUBY_PLATFORM =~ /darwin/
         font_path = "/Library/Fonts/#{font}.ttf"
@@ -42,13 +42,13 @@ module Ruby2D
         # Linux
         font_path = "/usr/share/fonts/truetype/#{font}.ttf"
       end
-      
+
       unless File.exists? font_path
         raise Error, "Cannot find system font"
       else
         font_path
       end
     end
-    
+
   end
 end
diff --git a/lib/ruby2d/triangle.rb b/lib/ruby2d/triangle.rb
index cf6e24a..eb6b07f 100644
--- a/lib/ruby2d/triangle.rb
+++ b/lib/ruby2d/triangle.rb
@@ -3,12 +3,12 @@
 module Ruby2D
   class Triangle
     include Renderable
-    
+
     attr_accessor :x1, :y1, :c1,
                   :x2, :y2, :c2,
                   :x3, :y3, :c3
     attr_reader :color, :type_id
-    
+
     def initialize(x1=50, y1=0, x2=100, y2=100, x3=0, y3=100, c='white', z=0)
       @type_id = 1
       @x1, @y1 = x1, y1
@@ -19,14 +19,14 @@ module Ruby2D
       self.color = c
       add
     end
-    
+
     def color=(c)
       @color = Color.from(c)
       update_color(@color)
     end
-    
+
     private
-    
+
     def update_color(c)
       if c.is_a? Color::Set
         if c.length == 3
diff --git a/lib/ruby2d/window.rb b/lib/ruby2d/window.rb
index 837b55a..9970861 100644
--- a/lib/ruby2d/window.rb
+++ b/lib/ruby2d/window.rb
@@ -2,10 +2,10 @@
 
 module Ruby2D
   class Window
-    
+
     attr_reader :objects
     attr_accessor :mouse_x, :mouse_y, :frames, :fps
-    
+
     MouseEvent      = Struct.new(:type, :button, :direction, :x, :y, :delta_x, :delta_y)
     KeyEvent        = Struct.new(:type, :key)
     ControllerEvent = Struct.new(:which, :type, :axis, :value, :button)
@@ -46,7 +46,7 @@ module Ruby2D
       @update_proc = Proc.new {}
       @diagnostics = false
     end
-    
+
     def new_event_key
       @event_key = @event_key.next
     end
@@ -71,7 +71,7 @@ module Ruby2D
       when :diagnostics;     @diagnostics
       end
     end
-    
+
     def set(opts)
       # Store new window attributes, or ignore if nil
       @title           = opts[:title]           || @title
@@ -88,7 +88,7 @@ module Ruby2D
       @highdpi         = opts[:highdpi]         || @highdpi
       @diagnostics     = opts[:diagnostics]     || @diagnostics
     end
-    
+
     def add(o)
       case o
       when nil
@@ -99,12 +99,12 @@ module Ruby2D
         add_object(o)
       end
     end
-    
+
     def remove(o)
       if o == nil
         raise Error, "Cannot remove '#{o.class}' from window!"
       end
-      
+
       if i = @objects.index(o)
         @objects.delete_at(i)
         true
@@ -112,36 +112,36 @@ module Ruby2D
         false
       end
     end
-    
+
     def clear
       @objects.clear
     end
-    
+
     def update(&proc)
       @update_proc = proc
       true
     end
-    
+
     def on(event, &proc)
       event_id = new_event_key
       @events[event][event_id] = proc
       EventDescriptor.new(event, event_id)
     end
-    
+
     def off(event_descriptor)
       @events[event_descriptor.type].delete(event_descriptor.id)
     end
 
     def key_callback(type, key)
       # puts "===", "type: #{type}", "key: #{key}"
-      
+
       key = key.downcase
-      
+
       # All key events
       @events[:key].each do |id, e|
         e.call(KeyEvent.new(type, key))
       end
-      
+
       case type
       # When key is pressed, fired once
       when :down
@@ -160,17 +160,17 @@ module Ruby2D
         end
       end
     end
-    
+
     def mouse_callback(type, button, direction, x, y, delta_x, delta_y)
       # Convert to symbols (see MRuby bug in native extension)
       button    = button.to_sym    unless button    == nil
       direction = direction.to_sym unless direction == nil
-      
+
       # All mouse events
       @events[:mouse].each do |id, e|
         e.call(MouseEvent.new(type, button, direction, x, y, delta_x, delta_y))
       end
-      
+
       case type
       # When mouse button pressed
       when :down
@@ -194,13 +194,13 @@ module Ruby2D
         end
       end
     end
-    
+
     def controller_callback(which, type, axis, value, button)
       # All controller events
       @events[:controller].each do |id, e|
         e.call(ControllerEvent.new(which, type, axis, value, button))
       end
-      
+
       case type
       # When controller axis motion, like analog sticks
       when :axis
@@ -219,21 +219,21 @@ module Ruby2D
         end
       end
     end
-    
+
     def update_callback
       @update_proc.call
     end
-    
+
     def show
       ext_window_show
     end
-    
+
     def close
       ext_window_close
     end
-    
+
     private
-    
+
     def add_object(o)
       if [email protected]?(o)
         index = @objects.index do |object|
@@ -249,6 +249,6 @@ module Ruby2D
         false
       end
     end
-    
+
   end
 end
diff --git a/ruby2d.gemspec b/ruby2d.gemspec
index 0ab5176..dc38f74 100644
--- a/ruby2d.gemspec
+++ b/ruby2d.gemspec
@@ -9,11 +9,11 @@ Gem::Specification.new do |s|
   s.license     = 'MIT'
   s.author      = 'Tom Black'
   s.email       = '[email protected]'
-  
+
   s.required_ruby_version = '>= 2.0.0'
   s.add_dependency 'opal', '~> 0.10'
   s.add_development_dependency 'rspec', '~> 3.5'
-  
+
   s.files = Dir.glob('lib/**/*') +
             Dir.glob('assets/**/*') +
             Dir.glob('ext/**/*.{c,js,rb}')
diff --git a/test/color_spec.rb b/test/color_spec.rb
index 0fb65c8..299f403 100644
--- a/test/color_spec.rb
+++ b/test/color_spec.rb
@@ -1,37 +1,37 @@
 require 'ruby2d'
 
 RSpec.describe Ruby2D::Color do
-  
+
   describe '#is_valid?' do
     it 'determines if a color string is valid' do
       expect(Ruby2D::Color.is_valid? 'red').to eq true
       expect(Ruby2D::Color.is_valid? 'balloons').to eq false
     end
-    
+
     it 'determines if a color string is a valid hex value' do
       expect(Ruby2D::Color.is_valid? '#c0c0c0').to eq true
       expect(Ruby2D::Color.is_valid? '#00000').to eq false
       expect(Ruby2D::Color.is_valid? '123456').to eq false
     end
-    
+
     it 'determines if an array is a valid color' do
       expect(Ruby2D::Color.is_valid? [1, 0, 0.0, 1.0]).to eq true
       expect(Ruby2D::Color.is_valid? [1.0, 0, 0]).to eq false
     end
-    
+
     it 'prevents color values that are out of range' do
       expect(Ruby2D::Color.is_valid? [1.2, 0, 0, 0]).to eq false
       expect(Ruby2D::Color.is_valid? [0, 0, -0.1, 0]).to eq false
       expect(Ruby2D::Color.is_valid? [0, 0, 0, 2]).to eq false
     end
   end
-  
+
   describe '#new' do
     it 'raises error on bad color' do
       expect { Ruby2D::Color.new 42 }.to raise_error Ruby2D::Error
     end
   end
-  
+
   describe '#opacity' do
     it 'sets and returns the opacity' do
       s1 = Square.new
@@ -42,5 +42,5 @@ RSpec.describe Ruby2D::Color do
       expect(s2.opacity).to eq 0.7
     end
   end
-  
+
 end
diff --git a/test/dsl_spec.rb b/test/dsl_spec.rb
index 522b29e..4337046 100644
--- a/test/dsl_spec.rb
+++ b/test/dsl_spec.rb
@@ -2,7 +2,7 @@ require 'ruby2d'
 include Ruby2D::DSL
 
 RSpec.describe Ruby2D::DSL do
-  
+
   describe '#get' do
     it 'gets the default window attributes' do
       expect(get :width).to eq 640
@@ -10,7 +10,7 @@ RSpec.describe Ruby2D::DSL do
       expect(get :title).to eq "Ruby 2D"
     end
   end
-  
+
   describe '#set' do
     it 'sets a single window attribute' do
       set width: 300
@@ -18,7 +18,7 @@ RSpec.describe Ruby2D::DSL do
       expect(get :height).to eq 480
       expect(get :title).to eq "Ruby 2D"
     end
-    
+
     it 'sets multiple window attributes at a time' do
       set width: 800, height: 600, title: "Hello tests!"
       expect(get :width).to eq 800
@@ -26,5 +26,5 @@ RSpec.describe Ruby2D::DSL do
       expect(get :title).to eq "Hello tests!"
     end
   end
-  
+
 end
diff --git a/test/image_spec.rb b/test/image_spec.rb
index 43950c9..3eb5d86 100644
--- a/test/image_spec.rb
+++ b/test/image_spec.rb
@@ -1,11 +1,11 @@
 require 'ruby2d'
 
 RSpec.describe Ruby2D::Image do
-  
+
   describe '#new' do
     it "raises exception if image file doesn't exist" do
       expect { Image.new(0, 0, 'bad_image.png') }.to raise_error(Ruby2D::Error)
     end
   end
-  
+
 end
diff --git a/test/spec_helper.rb b/test/spec_helper.rb
index d93bff8..b69dfa6 100644
--- a/test/spec_helper.rb
+++ b/test/spec_helper.rb
@@ -2,11 +2,11 @@ RSpec.configure do |config|
   config.expect_with :rspec do |expectations|
     expectations.include_chain_clauses_in_custom_matcher_descriptions = true
   end
-  
+
   config.mock_with :rspec do |mocks|
     mocks.verify_partial_doubles = true
   end
-  
+
   # Silence output when running tests
   original_stderr = $stderr
   original_stdout = $stdout
diff --git a/test/sprite_spec.rb b/test/sprite_spec.rb
index 42268be..441ca6e 100644
--- a/test/sprite_spec.rb
+++ b/test/sprite_spec.rb
@@ -1,11 +1,11 @@
 require 'ruby2d'
 
 RSpec.describe Ruby2D::Sprite do
-  
+
   describe '#new' do
     it 'creates a new sprite' do
       Ruby2D::Sprite.new(0, 0, "tests/media/sprite_sheet.png")
     end
   end
-  
+
 end
diff --git a/test/testcard.rb b/test/testcard.rb
index a6341c7..b573579 100644
--- a/test/testcard.rb
+++ b/test/testcard.rb
@@ -239,16 +239,16 @@ end
 update do
   pointer.x = (get :mouse_x) - 5
   pointer.y = (get :mouse_y) - 7
-  
+
   if flash > 0
     pointer_outline.color = [0, 1, 0, 1]
     flash -= 1
   else
     pointer_outline.color = [0, 1, 0, 0]
   end
-  
+
   s1.animate(:forwards)
-  
+
   if (get :frames) % 20 == 0
     fps.text = "FPS: #{(get :fps).round(3)}"
   end
diff --git a/test/text_spec.rb b/test/text_spec.rb
index 1dc6189..ad12cbf 100644
--- a/test/text_spec.rb
+++ b/test/text_spec.rb
@@ -1,14 +1,14 @@
 require 'ruby2d'
 
 RSpec.describe Ruby2D::Text do
-  
+
   describe '#text=' do
     it 'maps Time to string' do
       t = Text.new(0, 0, Time.now, 40, "test/media/bitstream_vera/vera.ttf")
       t.text = Time.new(1, 1, 1, 1, 1, 1, 1)
       expect(t.text).to eq "0001-01-01 01:01:01 +0000"
     end
-    
+
     it 'maps Number to string' do
       t = Text.new(0, 0, 0, 40, "test/media/bitstream_vera/vera.ttf")
       t.text = 0