Update #47 - Singleplayer lag fixes

sources/main/java/com/carrotsearch/hppc/IntSet.java

@@ -0,0 +1,33 @@
+package com.carrotsearch.hppc;
+
+/** A set of <code>int</code>s. */
+@com.carrotsearch.hppc.Generated(date = "2024-06-04T15:20:17+0200", value = "KTypeSet.java")
+public interface IntSet extends IntCollection {
+  /**
+   * Adds <code>k</code> to the set.
+   *
+   * @return Returns <code>true</code> if this element was not part of the set before. Returns
+   *     <code>false</code> if an equal element is already part of the set, <b>does not replace the
+   *     existing element</b> with the argument.
+   */
+  public boolean add(int k);
+
+  /**
+   * Visually depict the distribution of keys.
+   *
+   * @param characters The number of characters to "squeeze" the entire buffer into.
+   * @return Returns a sequence of characters where '.' depicts an empty fragment of the internal
+   *     buffer and 'X' depicts full or nearly full capacity within the buffer's range and anything
+   *     between 1 and 9 is between.
+   */
+  public String visualizeKeyDistribution(int characters);
+
+  /**
+   * Adds all elements from the given {@link IntContainer} to this set.
+   *
+   * @return Returns the number of elements actually added as a result of this call (not previously
+   *     present in the set).
+   * @since 0.9.1
+   */
+  public int addAll(IntContainer container);
+}