Raise errors if media can't be read

Check if NULL pointers are returned by native functions loading media for images, sprites, audio, etc. If NULL, raise Ruby 2D error.

5 files changed, 15 insertions, 5 deletions

diff --git a/lib/ruby2d/image.rb b/lib/ruby2d/image.rb
index 1341f89..67ce1b1 100644
--- a/lib/ruby2d/image.rb
+++ b/lib/ruby2d/image.rb
@@ -20,7 +20,9 @@ module Ruby2D
       @rotate = opts[:rotate] || 0
       self.color = opts[:color] || 'white'
       self.opacity = opts[:opacity] if opts[:opacity]
-      ext_init(@path)
+      unless ext_init(@path)
+        raise Error, "Image `#{@path}` cannot be created"
+      end
       add
     end
 
diff --git a/lib/ruby2d/music.rb b/lib/ruby2d/music.rb
index ef8deb5..46aab0a 100644
--- a/lib/ruby2d/music.rb
+++ b/lib/ruby2d/music.rb
@@ -12,7 +12,9 @@ module Ruby2D
       end
       @path = path
       @loop = false
-      ext_init(path)
+      unless ext_init(@path)
+        raise Error, "Music `#{@path}` cannot be created"
+      end
     end
 
     # Play the music
diff --git a/lib/ruby2d/sound.rb b/lib/ruby2d/sound.rb
index 2c78525..2dae996 100644
--- a/lib/ruby2d/sound.rb
+++ b/lib/ruby2d/sound.rb
@@ -11,7 +11,9 @@ module Ruby2D
         raise Error, "Cannot find audio file `#{path}`"
       end
       @path = path
-      ext_init(path)
+      unless ext_init(@path)
+        raise Error, "Sound `#{@path}` cannot be created"
+      end
     end
 
     # Play the sound
diff --git a/lib/ruby2d/sprite.rb b/lib/ruby2d/sprite.rb
index 94a6ea2..8405e5f 100644
--- a/lib/ruby2d/sprite.rb
+++ b/lib/ruby2d/sprite.rb
@@ -45,7 +45,9 @@ module Ruby2D
       @img_width = nil; @img_height = nil
 
       # Initialize the sprite
-      ext_init(@path)
+      unless ext_init(@path)
+        raise Error, "Sprite image `#{@path}` cannot be created"
+      end
 
       # The clipping rectangle
       @clip_x = opts[:clip_x] || 0
diff --git a/lib/ruby2d/text.rb b/lib/ruby2d/text.rb
index a526672..d62bc0b 100644
--- a/lib/ruby2d/text.rb
+++ b/lib/ruby2d/text.rb
@@ -20,7 +20,9 @@ module Ruby2D
       unless File.exist? @font
         raise Error, "Cannot find font file `#{@font}`"
       end
-      ext_init
+      unless ext_init
+        raise Error, "Text `#{@text}` cannot be created"
+      end
       add
     end