Don't merge blocks that get colored by blocks above into columns

core/src/main/java/com/seibel/distanthorizons/core/dataObjects/transformers/LodDataBuilder.java

@@ -185,6 +185,7 @@ public class LodDataBuilder
 					}
 					
 					// Process blocks from top to bottom
+					boolean forceSingleBlock = false;
 					for (; y >= minBuildHeight; y--)
 					{
 						IBiomeWrapper newBiome = chunkWrapper.getBiome(relBlockX, y, relBlockZ);
@@ -193,8 +194,15 @@ public class LodDataBuilder
 						byte newSkyLight = (byte) chunkWrapper.getDhSkyLight(relBlockX, y + 1, relBlockZ);
 						
 						// Save the biome/block change if different from previous
-						if (!newBiome.equals(biome) || !newBlockState.equals(blockState))
+						if (!newBiome.equals(biome) || !newBlockState.equals(blockState) || forceSingleBlock)
 						{
+							forceSingleBlock = false;
+							// Check if the  previous block potentially colors this block
+							// If so, we must make this block a single entry, aka add the next block even if it is the same
+							if (!blockState.isAir() && !blockState.isSolid() && !blockState.isLiquid() && blockState.getOpacity() != LodUtil.BLOCK_FULLY_OPAQUE)
+							{
+								forceSingleBlock = true;
+							}
 							longs.add(FullDataPointUtil.encode(mappedId, lastY - y, y + 1 - inclusiveMinBuildHeight, blockLight, skyLight));
 							biome = newBiome;
 							blockState = newBlockState;