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Minecraft mapping and rendering tool

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/* Copyright (c) 2012-2016 Jesper Öqvist 
 *
 * This file is part of Chunky.
 *
 * Chunky is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Chunky is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * You should have received a copy of the GNU General Public License
 * along with Chunky.  If not, see .
 */
package se.llbit.chunky.world;

/**
 * An empty or non-existent region.
 *
 * @author Jesper Öqvist 
 */
public class EmptyRegion extends Region {

  /**
   * Singleton instance.
   */
  public static final EmptyRegion instance = new EmptyRegion();

  /**
   * Create the empty region.
   */
  private EmptyRegion() {
    super(ChunkPosition.get(0, 0), EmptyWorld.instance);
  }

  @Override public Chunk getChunk(ChunkPosition pos) {
    return EmptyRegionChunk.INSTANCE;
  }

  @Override public boolean isEmpty() {
    return true;
  }

  @Override public boolean hasChanged() {
    return false;
  }
}