Refac

Author: armin-reichert

pacman-ui-lib/src/main/java/de/amr/pacmanfx/uilib/assets/SpriteMap.java

@@ -30,30 +30,28 @@ public SpriteMap(Class<SID> spriteIdClass) {
         data = new EnumMap<>(spriteIdClass);
     }
 
-    public RectShort sprite(SID id) {
+    private SpriteData get(SID id) {
         requireNonNull(id);
         if (!data.containsKey(id)) {
             throw new IllegalArgumentException("Unknown sprite ID '%s'".formatted(id));
         }
-        Object value = data.get(id);
+        SpriteData value = data.get(id);
         if (value == null) {
             throw new IllegalArgumentException("Sprite value is null for id '%s'".formatted(id));
         }
+        return value;
+    }
+
+    public RectShort sprite(SID id) {
+        SpriteData value = get(id);
         if (value instanceof SingleSprite(RectShort rect)) {
             return rect;
         }
         throw new IllegalArgumentException("Sprite ID '%s' does not reference a sprite".formatted(id));
     }
 
     public RectShort[] spriteSequence(SID id) {
-        requireNonNull(id);
-        if (!data.containsKey(id)) {
-            throw new IllegalArgumentException("Unknown sprite ID '%s'".formatted(id));
-        }
-        Object value = data.get(id);
-        if (value == null) {
-            throw new IllegalArgumentException("Sprite value is null for id '%s'".formatted(id));
-        }
+        SpriteData value = get(id);
         if (value instanceof SpriteSequence(RectShort[] sequence)) {
             return sequence;
         }