"get sprite" and "get avatar" functions

src/game.rs

@@ -72,6 +72,9 @@ impl Version {
     }
 }
 
+#[derive(Debug)]
+pub struct SpriteNotFound;
+
 #[derive(Clone, Debug, PartialEq)]
 pub struct Game {
     pub name: String,
@@ -217,6 +220,24 @@ impl Game {
         )
     }
 
+    /// todo refactor this into "get T by ID", taking a Vec<T> and an ID name?
+    #[inline]
+    pub fn get_sprite_by_id(&self, id: String) -> Result<&Sprite, SpriteNotFound> {
+        let index = self.sprites.iter().position(
+            |sprite| sprite.id == id
+        );
+
+        if index.is_some() {
+            return Ok(&self.sprites[index.unwrap()])
+        } else {
+            Err(SpriteNotFound)
+        }
+    }
+
+    pub fn get_avatar(&self) -> Result<&Sprite, SpriteNotFound> {
+        self.get_sprite_by_id("A".to_string())
+    }
+
     pub fn merge(game: Game) {
         // ignore title, version, room format, room type, font, text direction
 

src/lib.rs

@@ -20,6 +20,8 @@ pub mod text;
 pub mod tile;
 pub mod variable;
 
+pub mod test_omnibus;
+
 use colour::Colour;
 use dialogue::Dialogue;
 use ending::Ending;