Extend by convenience methods.

NCPCore/src/main/java/fr/neatmonster/nocheatplus/checks/net/FlyingQueueHandle.java

@@ -8,8 +8,10 @@
 
 /**
  * Convenience for providing several checks with a lazy-init handle for fetching
- * queued flying packets. Future concept should be somehow linking follow-up
- * packets (flying->dig) to each other...
+ * queued flying packets. Typical use means only fetching this, if really
+ * necessary, so isFlyingQueueFetched() returns false, if a default or current
+ * position/look has passed checks. Future concept should be somehow linking
+ * follow-up packets (flying->dig) to each other...
  * 
  * @author asofold
  *
@@ -31,8 +33,57 @@ public DataPacketFlying[] getHandle() {
         return queue;
     }
 
+    /**
+     * Test if the queue has been fetched.
+     * 
+     * @return
+     */
     public boolean isFlyingQueueFetched() {
         return queue != null;
     }
 
+    /**
+     * Get the first index where the element is not null, if not fetched or no
+     * non-null element is found, -1 is returned.
+     * 
+     * @return -1 if the queue has not been fetched yet or if all elements are
+     *         null, otherwise the lowest index of a non null element is
+     *         returned.
+     */
+    public int getFirstIndexWithContentIfFetched() {
+        if (queue == null) {
+            return -1;
+        }
+        else {
+            for (int i = 0; i < queue.length; i++) {
+                if (queue[i] != null) {
+                    return i;
+                }
+            }
+            return -1;
+        }
+    }
+
+    /**
+     * Get the element at the given index, only if fetched.
+     * 
+     * @param index
+     * @return If already feteched, the element at the index is returned,
+     *         otherwiese null is returned.
+     * @throws ArrayIndexOutOfBoundsException
+     *             If the index is out of range.
+     */
+    public DataPacketFlying getIfFetched(final int index) {
+        return queue == null ? null : queue[index];
+    }
+
+    /**
+     * Get the queue size only if fetched - otherwise -1 is returned.
+     * 
+     * @return Size of the queue if fetched, -1 otherwise.
+     */
+    public int sizeIfFetched() {
+        return queue == null ? -1 : queue.length;
+    }
+
 }