From ee416a10ecee4625347ec5afd113bab1a4380f67 Mon Sep 17 00:00:00 2001
From: James Seibel <jeseibel@gondtc.com>
Date: Fri, 20 Aug 2021 20:24:33 -0500
Subject: [PATCH] Add null checking to the BufferBuilder

---
 .../java/com/seibel/lod/builders/LodNodeBufferBuilder.java | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/main/java/com/seibel/lod/builders/LodNodeBufferBuilder.java b/src/main/java/com/seibel/lod/builders/LodNodeBufferBuilder.java
index ba0ce4b49..7f44ddd35 100644
--- a/src/main/java/com/seibel/lod/builders/LodNodeBufferBuilder.java
+++ b/src/main/java/com/seibel/lod/builders/LodNodeBufferBuilder.java
@@ -188,8 +188,11 @@ public class LodNodeBufferBuilder
 						
 						// local position in the vbo and bufferBuilder arrays
 						BufferBuilder currentBuffer = buildableBuffers[xRegion][zRegion];
-						if (currentBuffer == null)
-							continue;
+						
+						// make sure the buffers weren't 
+						// changed while we were running this method
+						if (currentBuffer == null || (currentBuffer != null && !currentBuffer.building()))
+							return;
 							
 							
 						/**TODO make this automatic and config dependant*/