From 5c648dfe2d356d6b9aa47f52437934f911cc70be Mon Sep 17 00:00:00 2001
From: Mike Primm <mike@primmhome.com>
Date: Mon, 3 Sep 2018 11:44:20 -0500
Subject: [PATCH] Alter fully generated prediction to match 1.13.x worldgen
 behavior

---
 .../com/wimbli/WorldBorder/WorldFileData.java   | 17 +++++++++--------
 1 file changed, 9 insertions(+), 8 deletions(-)

diff --git a/src/main/java/com/wimbli/WorldBorder/WorldFileData.java b/src/main/java/com/wimbli/WorldBorder/WorldFileData.java
index 73e46a8..37f6848 100644
--- a/src/main/java/com/wimbli/WorldBorder/WorldFileData.java
+++ b/src/main/java/com/wimbli/WorldBorder/WorldFileData.java
@@ -134,14 +134,15 @@ public class WorldFileData
 	// Minecraft only fully generates a chunk when adjacent chunks are also loaded.
 	public boolean isChunkFullyGenerated(int x, int z)
 	{	// if all adjacent chunks exist, it should be a safe enough bet that this one is fully generated
-		return
-			! (
-			! doesChunkExist(x, z)
-		 || ! doesChunkExist(x+1, z)
-		 || ! doesChunkExist(x-1, z)
-		 || ! doesChunkExist(x, z+1)
-		 || ! doesChunkExist(x, z-1)
-			);
+	    // For 1.13+, due to world gen changes, this is now effectively a 3 chunk radius requirement vs a 1 chunk radius
+	    for (int xx = x-3; xx <= x+3; xx++) {
+	        for (int zz = z-3; zz <= z-3; zz++) {
+	            if (!doesChunkExist(xx, zz)) {
+	                return false;
+	            }
+	        }
+	    }
+	    return true;
 	}
 
 	// Method to let us know a chunk has been generated, to update our region map.