feat(audio): centralize sound management with proper enum, improved iterator protocols, introduce new sound files

src/asset.rs

@@ -2,21 +2,62 @@
 //! On desktop, assets are embedded using include_bytes!; on Emscripten, assets are loaded from the filesystem.
 
 use std::borrow::Cow;
-use strum_macros::EnumIter;
+use std::iter;
+
+use crate::audio::Sound;
 
 /// Enumeration of all game assets with cross-platform loading support.
 ///
 /// Each variant corresponds to a specific file that can be loaded either from
 /// binary-embedded data or embedded filesystem (Emscripten).
-#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, EnumIter)]
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
 pub enum Asset {
-    Waka(u8),
     /// Main sprite atlas containing all game graphics (atlas.png)
     AtlasImage,
     /// Terminal Vector font for text rendering (TerminalVector.ttf)
     Font,
-    /// Sound effect for Pac-Man's death
-    DeathSound,
+    /// Sound file assets
+    SoundFile(Sound),
+}
+
+use strum::IntoEnumIterator;
+
+impl Asset {
+    #[allow(dead_code)]
+    pub fn into_iter() -> AssetIter {
+        AssetIter {
+            sound_iter: None,
+            state: 0,
+        }
+    }
+}
+
+#[allow(clippy::type_complexity)]
+pub struct AssetIter {
+    sound_iter: Option<iter::Map<<Sound as IntoEnumIterator>::Iterator, fn(Sound) -> Asset>>,
+    state: u8,
+}
+
+impl Iterator for AssetIter {
+    type Item = Asset;
+
+    fn next(&mut self) -> Option<Self::Item> {
+        match self.state {
+            0 => {
+                self.state = 1;
+                Some(Asset::AtlasImage)
+            }
+            1 => {
+                self.state = 2;
+                Some(Asset::Font)
+            }
+            2 => self
+                .sound_iter
+                .get_or_insert_with(|| Sound::iter().map(Asset::SoundFile))
+                .next(),
+            _ => None,
+        }
+    }
 }
 
 impl Asset {
@@ -29,11 +70,16 @@ impl Asset {
     pub fn path(&self) -> &str {
         use Asset::*;
         match self {
-            Waka(0) => "sound/pacman/waka/1.ogg",
-            Waka(1) => "sound/pacman/waka/2.ogg",
-            Waka(2) => "sound/pacman/waka/3.ogg",
-            Waka(3..=u8::MAX) => "sound/pacman/waka/4.ogg",
-            DeathSound => "sound/pacman/death.ogg",
+            SoundFile(Sound::Waka(0)) => "sound/pacman/waka/1.ogg",
+            SoundFile(Sound::Waka(1)) => "sound/pacman/waka/2.ogg",
+            SoundFile(Sound::Waka(2)) => "sound/pacman/waka/3.ogg",
+            SoundFile(Sound::Waka(3..=u8::MAX)) => "sound/pacman/waka/4.ogg",
+            SoundFile(Sound::PacmanDeath) => "sound/pacman/death.ogg",
+            SoundFile(Sound::ExtraLife) => "sound/pacman/extra_life.ogg",
+            SoundFile(Sound::Fruit) => "sound/pacman/fruit.ogg",
+            SoundFile(Sound::Ghost) => "sound/pacman/ghost.ogg",
+            SoundFile(Sound::Beginning) => "sound/begin.ogg",
+            SoundFile(Sound::Intermission) => "sound/intermission.ogg",
             AtlasImage => "atlas.png",
             Font => "TerminalVector.ttf",
         }