From 5ea956be59a61bc48199bc7cd85518ec81f23aee Mon Sep 17 00:00:00 2001
From: cswhite2000 <18whitechristop@gmail.com>
Date: Tue, 21 Aug 2018 19:39:46 -0700
Subject: [PATCH] isChunkGenerated API

Resolves #1329

diff --git a/src/main/java/org/bukkit/Location.java b/src/main/java/org/bukkit/Location.java
index 7e1ee875..9457832b 100644
--- a/src/main/java/org/bukkit/Location.java
+++ b/src/main/java/org/bukkit/Location.java
@@ -9,6 +9,7 @@ import org.bukkit.util.NumberConversions;
 import org.bukkit.util.Vector;
 
 // Paper start
+import com.google.common.base.Preconditions;
 import java.util.Collection;
 import java.util.function.Predicate;
 import org.bukkit.entity.Entity;
@@ -502,6 +503,15 @@ public class Location implements Cloneable, ConfigurationSerializable {
     public boolean isChunkLoaded() { return world.isChunkLoaded(locToBlock(x) >> 4, locToBlock(z) >> 4); } // Paper
 
     // Paper start
+    /**
+     * Checks if a {@link Chunk} has been generated at this location.
+     *
+     * @return true if a chunk has been generated at this location
+     */
+    public boolean isGenerated() {
+        Preconditions.checkNotNull(world, "Location has no world!");
+        return world.isChunkGenerated(locToBlock(x) >> 4, locToBlock(z) >> 4);
+    }
 
     /**
      * Sets the position of this Location and returns itself
diff --git a/src/main/java/org/bukkit/World.java b/src/main/java/org/bukkit/World.java
index d4bfbad3..53764fae 100644
--- a/src/main/java/org/bukkit/World.java
+++ b/src/main/java/org/bukkit/World.java
@@ -181,6 +181,26 @@ public interface World extends PluginMessageRecipient, Metadatable {
     public default Chunk getChunkAt(long chunkKey) {
         return getChunkAt((int) chunkKey, (int) (chunkKey >> 32));
     }
+
+    /**
+     * Checks if a {@link Chunk} has been generated at the specified chunk key,
+     * which is the X and Z packed into a long.
+     *
+     * @param chunkKey The Chunk Key to look up the chunk by
+     * @return true if the chunk has been generated, otherwise false
+     */
+    public default boolean isChunkGenerated(long chunkKey) {
+        return isChunkGenerated((int) chunkKey, (int) (chunkKey >> 32));
+    }
+
+    /**
+     * Checks if a {@link Chunk} has been generated at the given coordinates.
+     *
+     * @param x X-coordinate of the chunk
+     * @param z Z-coordinate of the chunk
+     * @return true if the chunk has been generated, otherwise false
+     */
+    public boolean isChunkGenerated(int x, int z);
     // Paper end
 
     /**
-- 
2.19.0