Implemented sound - first rev.

src/main/java/se/urmo/game/sound/SoundManager.java

@@ -0,0 +1,62 @@
+package se.urmo.game.sound;
+
+import javax.sound.sampled.AudioInputStream;
+import javax.sound.sampled.AudioSystem;
+import javax.sound.sampled.Clip;
+import java.util.EnumMap;
+import java.util.Map;
+
+public class SoundManager {
+    private final Map<SoundEffect, Clip> clips = new EnumMap<>(SoundEffect.class);
+    private SoundEffect lastMunch = SoundEffect.MUNCH1;
+
+    public SoundManager() {
+        load(SoundEffect.START, "/sounds/start.wav");
+        load(SoundEffect.SIREN, "/sounds/siren0.wav");
+        load(SoundEffect.MUNCH1, "/sounds/eat_dot_0_fast.wav");
+        load(SoundEffect.MUNCH2, "/sounds/eat_dot_1_fast.wav");
+        load(SoundEffect.FRUIT, "/sounds/eat_fruit.wav");
+        load(SoundEffect.GHOST_EATEN, "/sounds/eat_ghost.wav");
+        load(SoundEffect.EXTRA_LIFE, "/sounds/extend.wav");
+        load(SoundEffect.DEATH, "/sounds/death_0.wav");
+    }
+
+    private void load(SoundEffect id, String path) {
+        try (AudioInputStream ais = AudioSystem.getAudioInputStream(getClass().getResource(path))) {
+            Clip clip = AudioSystem.getClip();
+            clip.open(ais);
+            clips.put(id, clip);
+        } catch (Exception e) {
+            throw new RuntimeException("Failed to load sound: " + path, e);
+        }
+    }
+
+    public void play(SoundEffect id) {
+        Clip clip = clips.get(id);
+        if (clip == null) return;
+        if (clip.isRunning()) clip.stop();
+        clip.setFramePosition(0);
+        clip.start();
+    }
+
+    public void loop(SoundEffect id) {
+        Clip clip = clips.get(id);
+        if (clip == null) return;
+        if (!clip.isRunning()) {
+            clip.setFramePosition(0);
+            clip.loop(Clip.LOOP_CONTINUOUSLY);
+        }
+    }
+
+    public void stop(SoundEffect id) {
+        Clip clip = clips.get(id);
+        if (clip != null && clip.isRunning()) clip.stop();
+    }
+
+    // For dot munch alternation
+    public void playMunch() {
+        lastMunch = (lastMunch == SoundEffect.MUNCH1 ? SoundEffect.MUNCH2 : SoundEffect.MUNCH1);
+        play(lastMunch);
+    }
+}
+