#938: Various Sound API improvements

By: Jishuna <joshl5324@gmail.com>

paper-api/src/main/java/org/bukkit/Note.java

@@ -118,6 +118,14 @@ public class Note {
         }
     }
 
+    private static final float[] pitchArray = new float[25];
+    static {
+        for (int i = 0; i <= 24; i++) {
+            // See https://minecraft.wiki/w/Note_Block#Notes
+            pitchArray[i] = (float) Math.pow(2, (i - 12) / 12f);
+        }
+    }
+
     private final byte note;
 
     /**
@@ -254,6 +262,16 @@ public class Note {
         return Tone.getById(note).isSharped(note);
     }
 
+    /**
+     * Gets the pitch of this note. This is the value used with
+     * {@link World#playSound} or the /playsound command.
+     *
+     * @return the pitch
+     */
+    public float getPitch() {
+        return pitchArray[this.note];
+    }
+
     @Override
     public int hashCode() {
         final int prime = 31;