Better error when missing file

src/parser/mtl.rs

@@ -71,7 +71,7 @@ impl LineParser for MtlParser {
                         full_path.push(split[4].to_owned());
                         Ok(Element::Texture(first.to_owned(), full_path.to_str().unwrap().to_owned(), size))
                     } else {
-                        Err(ParserError::UnexpectedKeyword(path.to_owned(), line_number, split[2].to_owned()))
+                        Err(ParserError::UnexpectedKeyword(path.to_owned(), line_number, split[1].to_owned()))
                     }
 
                 },

src/renderer.rs

@@ -136,7 +136,11 @@ impl Renderer {
 
     /// Creates a SrgbTexture from a path to an image.
     pub fn make_texture(&self, path: &str) -> SrgbTexture2d {
-        let image = image::open(path).unwrap().to_rgba();
+        let image = match image::open(path) {
+            Ok(r) => r.to_rgba(),
+            Err(e) => panic!("Error while opening file {}: {}", path, e),
+        };
+
         self.make_texture_from_buffer(image)
     }