Close #30 and 31 (LODs rendering on top of the player and distance based rendering)

I can't currently test if this fixed the problem since I don't have a Linux install to test on.

.gitignore

@@ -22,4 +22,5 @@ eclipse
 run
 
 # Files from Forge MDK
+logs
 forge*changelog.txt

CREDITS.txt

@@ -1,65 +0,0 @@
-Minecraft Forge: Credits/Thank You
-
-Forge is a set of tools and modifications to the Minecraft base game code to assist 
-mod developers in creating new and exciting content. It has been in development for 
-several years now, but I would like to take this time thank a few people who have 
-helped it along it's way.
-
-First, the people who originally created the Forge projects way back in Minecraft 
-alpha. Eloraam of RedPower, and SpaceToad of Buildcraft, without their acceptiance 
-of me taking over the project, who knows what Minecraft modding would be today.
-
-Secondly, someone who has worked with me, and developed some of the core features
-that allow modding to be as functional, and as simple as it is, cpw. For developing
-FML, which stabelized the client and server modding ecosystem. As well as the base
-loading system that allows us to modify Minecraft's code as elegently as possible.
-
-Mezz, who has stepped up as the issue and pull request manager. Helping to keep me
-sane as well as guiding the community into creating better additions to Forge.
-
-Searge, Bspks, Fesh0r, ProfMobious, and all the rest over on the MCP team {of which 
-I am a part}. For creating some of the core tools needed to make Minecraft modding 
-both possible, and as stable as can be.
-  On that note, here is some specific information of the MCP data we use:
-    * Minecraft Coder Pack (MCP) *
-      Forge Mod Loader and Minecraft Forge have permission to distribute and automatically 
-      download components of MCP and distribute MCP data files. This permission is not 
-      transitive and others wishing to redistribute the Minecraft Forge source independently
-      should seek permission of MCP or remove the MCP data files and request their users 
-      to download MCP separately.
-      
-And lastly, the countless community members who have spent time submitting bug reports, 
-pull requests, and just helping out the community in general. Thank you.
-
---LexManos
-
-=========================================================================
-
-This is Forge Mod Loader.
-
-You can find the source code at all times at https://github.com/MinecraftForge/MinecraftForge/tree/1.12.x/src/main/java/net/minecraftforge/fml
-
-This minecraft mod is a clean open source implementation of a mod loader for minecraft servers
-and minecraft clients.
-
-The code is authored by cpw.
-
-It began by partially implementing an API defined by the client side ModLoader, authored by Risugami.
-http://www.minecraftforum.net/topic/75440-
-This support has been dropped as of Minecraft release 1.7, as Risugami no longer maintains ModLoader.
-
-It also contains suggestions and hints and generous helpings of code from LexManos, author of MinecraftForge.
-http://www.minecraftforge.net/
-
-Additionally, it contains an implementation of topological sort based on that 
-published at http://keithschwarz.com/interesting/code/?dir=topological-sort
-
-It also contains code from the Maven project for performing versioned dependency
-resolution. http://maven.apache.org/
-
-It also contains a partial repackaging of the javaxdelta library from http://sourceforge.net/projects/javaxdelta/
-with credit to it's authors.
-
-Forge Mod Loader downloads components from the Minecraft Coder Pack
-(http://mcp.ocean-labs.de/index.php/Main_Page) with kind permission from the MCP team.
-

LICENSE.txt

@@ -1,520 +0,0 @@
-Unless noted below, Minecraft Forge, Forge Mod Loader, and all 
-parts herein are licensed under the terms of the LGPL 2.1 found
-here http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt and 
-copied below.
-
-Homepage: http://minecraftforge.net/
-          https://github.com/MinecraftForge/MinecraftForge
-          
-
-A note on authorship:
-All source artifacts are property of their original author, with
-the exclusion of the contents of the patches directory and others
-copied from it from time to time. Authorship of the contents of
-the patches directory is retained by the Minecraft Forge project.
-This is because the patches are partially machine generated
-artifacts, and are changed heavily due to the way forge works.
-Individual attribution within them is impossible.
-
-Consent:
-All contributions to Forge must consent to the release of any
-patch content to the Forge project.
-
-A note on infectivity:
-The LGPL is chosen specifically so that projects may depend on Forge
-features without being infected with its license. That is the 
-purpose of the LGPL. Mods and others using this code via ordinary
-Java mechanics for referencing libraries are specifically not bound
-by Forge's license for the Mod code.
-
-
-=== MCP Data ===
-This software includes data from the Minecraft Coder Pack (MCP), with kind permission
-from them. The license to MCP data is not transitive - distribution of this data by
-third parties requires independent licensing from the MCP team. This data is not
-redistributable without permission from the MCP team.
-
-=== Sharing ===
-I grant permission for some parts of FML to be redistributed outside the terms of the LGPL, for the benefit of
-the minecraft modding community. All contributions to these parts should be licensed under the same additional grant.
-
--- Runtime patcher --
-License is granted to redistribute the runtime patcher code (src/main/java/net/minecraftforge/fml/common/patcher
-and subdirectories) under any alternative open source license as classified by the OSI (http://opensource.org/licenses)
-
--- ASM transformers --
-License is granted to redistribute the ASM transformer code (src/main/java/net/minecraftforge/common/asm/ and subdirectories)
-under any alternative open source license as classified by the OSI (http://opensource.org/licenses)
-
-=========================================================================
-This software includes portions from the Apache Maven project at
-http://maven.apache.org/ specifically the ComparableVersion.java code. It is
-included based on guidelines at
-http://www.softwarefreedom.org/resources/2007/gpl-non-gpl-collaboration.html
-with notices intact. The only change is a non-functional change of package name.
-
-This software contains a partial repackaging of javaxdelta, a BSD licensed program for generating
-binary differences and applying them, sourced from the subversion at http://sourceforge.net/projects/javaxdelta/
-authored by genman, heikok, pivot.
-The only changes are to replace some Trove collection types with standard Java collections, and repackaged.
-=========================================================================
-
-
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-FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR
-CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE
-LIBRARY (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING
-RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A
-FAILURE OF THE LIBRARY TO OPERATE WITH ANY OTHER SOFTWARE), EVEN IF
-SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
-DAMAGES.
-
-                     END OF TERMS AND CONDITIONS

Readme.txt

@@ -12,9 +12,6 @@ Forge version: 1.16.4-35.1.4
 Notes:
 This version has been confirmed to work in Eclipse and retail Minecraft.
 (retail running forge 1.16.4-35.1.37)
-That being said only singleplayer is currently supported; connecting
-to servers (local or otherwise) will cause no LODs to be drawn and
-may cause instibility.
 
 
 ========================

src/main/java/com/seibel/lod/LodMain.java

@@ -1,7 +1,7 @@
 package com.seibel.lod;
 
+import com.seibel.lod.handlers.LodConfig;
 import com.seibel.lod.proxy.ClientProxy;
-import com.seibel.lod.util.LodConfig;
 
 import net.minecraft.client.Minecraft;
 import net.minecraftforge.common.MinecraftForge;

src/main/java/com/seibel/lod/builders/LodBufferBuilder.java

@@ -4,22 +4,27 @@ import java.util.concurrent.Executors;
 
 import org.lwjgl.opengl.GL11;
 
+import com.seibel.lod.builders.worldGeneration.LodChunkGenWorker;
+import com.seibel.lod.handlers.LodConfig;
 import com.seibel.lod.objects.LodChunk;
 import com.seibel.lod.objects.LodDimension;
 import com.seibel.lod.objects.NearFarBuffer;
-import com.seibel.lod.render.LodRender;
-import com.seibel.lod.util.LodConfig;
+import com.seibel.lod.render.LodRenderer;
+import com.seibel.lod.util.LodUtil;
 
 import net.minecraft.client.Minecraft;
 import net.minecraft.client.renderer.BufferBuilder;
 import net.minecraft.util.math.ChunkPos;
+import net.minecraft.world.biome.BiomeContainer;
+import net.minecraft.world.chunk.ChunkStatus;
+import net.minecraft.world.server.ServerWorld;
 import net.minecraftforge.common.WorldWorkerManager;
 
 /**
  * This object is used to create NearFarBuffer objects.
  * 
  * @author James Seibel
- * @version 05-06-2021
+ * @version 06-19-2021
  */
 public class LodBufferBuilder
 {
@@ -46,12 +51,12 @@ public class LodBufferBuilder
 	/** If this is greater than 0 no new chunk generation requests will be made
 	 * this is to prevent chunks from being generated for a long time in an area
 	 * the player is no longer in. */
-	public int numberOfChunksWaitingToGenerate = 0;
+	public volatile int numberOfChunksWaitingToGenerate = 0;
 	
 	/** how many chunks to generate outside of the player's
 	 * view distance at one time. (or more specifically how
 	 * many requests to make at one time) */
-	public int maxChunkGenRequests = 8;
+	public int maxChunkGenRequests = Runtime.getRuntime().availableProcessors();
 	
 	
 	public LodBufferBuilder(LodBuilder newLodBuilder)
@@ -61,7 +66,8 @@ public class LodBufferBuilder
 	}
 	
 	
-	
+	private BiomeContainer biomeContainer = null;
+	private LodDimension previousDimension = null;
 	
 
 	/**
@@ -73,7 +79,7 @@ public class LodBufferBuilder
 	 * After the buildable buffers have been generated they must be
 	 * swapped with the drawable buffers in the LodRenderer to be drawn.
 	 */
-	public void generateLodBuffersAsync(LodRender renderer, LodDimension lodDim,
+	public void generateLodBuffersAsync(LodRenderer renderer, LodDimension lodDim,
 			double playerX, double playerZ, int numbChunksWide)
 	{
 		// only allow one generation process to happen at a time
@@ -83,6 +89,12 @@ public class LodBufferBuilder
 		if (buildableNearBuffer == null || buildableFarBuffer == null)
 			throw new IllegalStateException("generateLodBuffersAsync was called before the buildableNearBuffer and buildableFarBuffer were created.");
 		
+		if (previousDimension != lodDim)
+		{
+			biomeContainer = LodUtil.getServerWorldFromDimension(lodDim.dimension).getChunk(0, 0, ChunkStatus.EMPTY).getBiomes();
+			previousDimension = lodDim;
+		}
+		
 		
 		
 		generatingBuffers = true;
@@ -99,7 +111,6 @@ public class LodBufferBuilder
 		int startZ = (-LodChunk.WIDTH * (numbChunksWide / 2)) + playerZChunkOffset;
 		
 		
-		
 		Thread t = new Thread(()->
 		{
 			// index of the chunk currently being added to the
@@ -107,13 +118,16 @@ public class LodBufferBuilder
 			int chunkGenIndex = 0;
 			
 			ChunkPos[] chunksToGen = new ChunkPos[maxChunkGenRequests];
+			// if we don't have a full number of chunks to generate in chunksToGen
+			// we can top it off from the reserve
+			ChunkPos[] chunksToGenReserve = new ChunkPos[maxChunkGenRequests];
 			int minChunkDist = Integer.MAX_VALUE;
 			ChunkPos playerChunkPos = new ChunkPos((int)playerX / LodChunk.WIDTH, (int)playerZ / LodChunk.WIDTH);
 			
 			
 			// generate our new buildable buffers
-			buildableNearBuffer.begin(GL11.GL_QUADS, LodRender.LOD_VERTEX_FORMAT);
-			buildableFarBuffer.begin(GL11.GL_QUADS, LodRender.LOD_VERTEX_FORMAT);
+			buildableNearBuffer.begin(GL11.GL_QUADS, LodRenderer.LOD_VERTEX_FORMAT);
+			buildableFarBuffer.begin(GL11.GL_QUADS, LodRenderer.LOD_VERTEX_FORMAT);
 			
 			// x axis
 			for (int i = 0; i < numbChunksWide; i++)
@@ -121,12 +135,12 @@ public class LodBufferBuilder
 				// z axis
 				for (int j = 0; j < numbChunksWide; j++)
 				{
-					// skip the middle
-					// (As the player moves some chunks will overlap or be missing,
-					// this is just how chunk loading/unloading works. This can hopefully
-					// be hidden with careful use of fog)
-					int middle = (numbChunksWide / 2);
-					if (isCoordInCenterArea(i, j, middle))
+					int chunkX = i + (startX / LodChunk.WIDTH);
+					int chunkZ = j + (startZ / LodChunk.WIDTH);
+					
+					// skip any chunks that Minecraft is going to render
+					if(isCoordInCenterArea(i, j, (numbChunksWide / 2)) 
+						&& renderer.vanillaRenderedChunks.contains(new ChunkPos(chunkX, chunkZ)))
 					{
 						continue;
 					}
@@ -138,16 +152,13 @@ public class LodBufferBuilder
 					double yOffset = 0;
 					double zOffset = (LodChunk.WIDTH * j) + startZ;
 					
-					int chunkX = i + (startX / LodChunk.WIDTH);
-					int chunkZ = j + (startZ / LodChunk.WIDTH);
-					
 					LodChunk lod = lodDim.getLodFromCoordinates(chunkX, chunkZ);
 					
 					if (lod == null || lod.isLodEmpty())
 					{
 						// generate a new chunk if no chunk currently exists
 						// and we aren't waiting on any other chunks to generate
-						if (lod == null && numberOfChunksWaitingToGenerate == 0)
+						if (lod == null && numberOfChunksWaitingToGenerate < maxChunkGenRequests)
 						{
 							ChunkPos pos = new ChunkPos(chunkX, chunkZ);
 							
@@ -160,6 +171,7 @@ public class LodBufferBuilder
 								// this chunk is closer, clear any previous
 								// positions and update the new minimum distance
 								minChunkDist = newDistance;
+								chunksToGenReserve = chunksToGen;
 								
 								chunkGenIndex = 0;
 								chunksToGen = new ChunkPos[maxChunkGenRequests];
@@ -193,8 +205,8 @@ public class LodBufferBuilder
 					
 					// get the desired LodTemplate and
 					// add this LOD to the buffer
-					LodConfig.CLIENT.lodTemplate.get().template.
-					addLodToBuffer(currentBuffer, lodDim, lod, 
+					LodConfig.CLIENT.lodTemplate.get().
+						template.addLodToBuffer(currentBuffer, lodDim, lod, 
 							xOffset, yOffset, zOffset, renderer.debugging);
 				}
 			}
@@ -202,6 +214,17 @@ public class LodBufferBuilder
 			// TODO add a way for a server side mod to generate chunks requested here
 			if(mc.isIntegratedServerRunning())
 			{
+		        ServerWorld serverWorld = LodUtil.getServerWorldFromDimension(lodDim.dimension);
+				
+		        // make sure we have as many chunks to generate as we are allowed
+		        if (chunkGenIndex < maxChunkGenRequests)
+		        {
+		        	for(int i = chunkGenIndex, j = 0; i < maxChunkGenRequests; i++, j++)
+		        	{
+		        		chunksToGen[i] = chunksToGenReserve[j];
+		        	}
+		        }
+		        
 				// start chunk generation
 				for(ChunkPos chunkPos : chunksToGen)
 				{
@@ -210,7 +233,7 @@ public class LodBufferBuilder
 					
 					numberOfChunksWaitingToGenerate++;
 					
-					LodChunkGenWorker genWorker = new LodChunkGenWorker(chunkPos, renderer, lodBuilder, this, lodDim);
+					LodChunkGenWorker genWorker = new LodChunkGenWorker(chunkPos, renderer, lodBuilder, this, lodDim, serverWorld, biomeContainer);
 					WorldWorkerManager.addWorker(genWorker);
 				}
 			}
@@ -238,7 +261,6 @@ public class LodBufferBuilder
 	
 	
 	
-	
 	//====================//
 	// generation helpers //
 	//====================//

src/main/java/com/seibel/lod/builders/LodBuilder.java

@@ -4,18 +4,22 @@ import java.awt.Color;
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
 
-import com.seibel.lod.enums.ColorDirection;
+import com.seibel.lod.enums.LodDetail;
+import com.seibel.lod.handlers.LodConfig;
 import com.seibel.lod.objects.LodChunk;
+import com.seibel.lod.objects.LodDataPoint;
 import com.seibel.lod.objects.LodDimension;
 import com.seibel.lod.objects.LodWorld;
-import com.seibel.lod.util.LodUtils;
+import com.seibel.lod.util.LodUtil;
 
 import net.minecraft.block.BlockState;
 import net.minecraft.block.Blocks;
-import net.minecraft.client.Minecraft;
-import net.minecraft.client.renderer.color.BlockColors;
+import net.minecraft.block.FlowingFluidBlock;
+import net.minecraft.block.GrassBlock;
+import net.minecraft.block.LeavesBlock;
 import net.minecraft.world.DimensionType;
 import net.minecraft.world.IWorld;
+import net.minecraft.world.biome.Biome;
 import net.minecraft.world.chunk.ChunkSection;
 import net.minecraft.world.chunk.IChunk;
 import net.minecraft.world.gen.Heightmap;
@@ -26,12 +30,10 @@ import net.minecraft.world.gen.Heightmap;
  * (specifically: Lod World, Dimension, Region, and Chunk objects)
  * 
  * @author James Seibel
- * @version 5-29-2021
+ * @version 6-27-2021
  */
 public class LodBuilder
 {
-	private static final Color INVISIBLE = new Color(0,0,0,0);
-
 	private ExecutorService lodGenThreadPool = Executors.newSingleThreadExecutor();
 	
 	/** Default size of any LOD regions we use */
@@ -41,13 +43,6 @@ public class LodBuilder
 	public static final int CHUNK_DATA_WIDTH = LodChunk.WIDTH;
 	public static final int CHUNK_SECTION_HEIGHT = LodChunk.WIDTH;
 	
-	/**
-	 * This is how many blocks are
-	 * required at a specific y-value
-	 * to constitute a LOD point
-	 */
-	private final int LOD_BLOCK_REQ = 32;
-	// the max number of blocks per layer = 64 (8*8)
 	
 	
 	public LodBuilder()
@@ -56,18 +51,15 @@ public class LodBuilder
 	}
 	
 	
-	
 	public void generateLodChunkAsync(IChunk chunk, LodWorld lodWorld, IWorld world)
+	{
+		generateLodChunkAsync(chunk, new LodBuilderConfig(), lodWorld, world);
+	}
+	
+	public void generateLodChunkAsync(IChunk chunk, LodBuilderConfig config, LodWorld lodWorld, IWorld world)
 	{
 		if (lodWorld == null || !lodWorld.getIsWorldLoaded())
 			return;
-			
-		// is this chunk from the same world as the lodWorld?
-		if (!lodWorld.getWorldName().equals(LodUtils.getWorldID(world)))
-			// we are not in the same world anymore
-			// don't add this LOD
-			return;
-				
 		
 		// don't try to create an LOD object
 		// if for some reason we aren't
@@ -81,7 +73,7 @@ public class LodBuilder
 			{
 				DimensionType dim = world.getDimensionType();
 				
-				LodChunk lod = generateLodFromChunk(chunk);
+				LodChunk lod = generateLodFromChunk(chunk, config);
 				
 				LodDimension lodDim;
 				
@@ -113,8 +105,6 @@ public class LodBuilder
 	
 	
 	
-	
-	
 	/**
 	 * Creates a LodChunk for a chunk in the given world.
 	 * 
@@ -122,39 +112,58 @@ public class LodBuilder
 	 * thrown if either the chunk or world is null.
 	 */
 	public LodChunk generateLodFromChunk(IChunk chunk) throws IllegalArgumentException
+	{
+		return generateLodFromChunk(chunk, new LodBuilderConfig());
+	}
+	
+	/**
+	 * Creates a LodChunk for a chunk in the given world.
+	 * 
+	 * @throws IllegalArgumentException 
+	 * thrown if either the chunk or world is null.
+	 */
+	public LodChunk generateLodFromChunk(IChunk chunk, LodBuilderConfig config) throws IllegalArgumentException
 	{
 		if(chunk == null)
-		{
 			throw new IllegalArgumentException("generateLodFromChunk given a null chunk");
-		}
-		
-		Color[] colors = new Color[ColorDirection.values().length];
 		
 		
-		short height = determineTopPoint(chunk.getSections());
-		short depth = determineBottomPoint(chunk.getSections());
+		LodDetail detail = LodConfig.CLIENT.lodDetail.get();
+		LodDataPoint[][] dataPoints = new LodDataPoint[detail.dataPointLengthCount][detail.dataPointLengthCount];
 		
-		
-		// determine the average color for each direction
-		for(ColorDirection dir : ColorDirection.values())
+		for(int i = 0; i < detail.dataPointLengthCount * detail.dataPointLengthCount; i++)
 		{
-			colors[dir.value] = generateLodColorForDirection(chunk, dir);
+			int startX = detail.startX[i];
+			int startZ = detail.startZ[i];
+			int endX = detail.endX[i];
+			int endZ = detail.endZ[i];
+			
+			Color color;
+			
+			color = generateLodColorForArea(chunk, config, startX, startZ, endX, endZ);
+
+			
+			short height;
+			short depth;
+			
+			if (!config.useHeightmap)
+			{
+				height = determineHeightPointForArea(chunk.getSections(), startX, startZ, endX, endZ);
+				depth = determineBottomPointForArea(chunk.getSections(), startX, startZ, endX, endZ);
+			}
+			else
+			{
+				height = determineHeightPoint(chunk.getHeightmap(LodChunk.DEFAULT_HEIGHTMAP), startX, startZ, endX, endZ);
+				depth = 0;
+			}
+			
+			int x = i / detail.dataPointLengthCount;
+			int z = i % detail.dataPointLengthCount;
+			
+			dataPoints[x][z] = new LodDataPoint(height, depth, color);
 		}
 		
-		// check to see if there are any invisible sides
-		for(ColorDirection dir : ColorDirection.values())
-		{
-			// if there are any invisible sides
-			// replace them with the top side
-			// (this is done to make sure oceans and other totally
-			// flat locations have the correct side colors)
-			if (dir == ColorDirection.BOTTOM || dir == ColorDirection.TOP)
-				continue;
-			if (colors[dir.value] == INVISIBLE)
-				colors[dir.value] = colors[ColorDirection.TOP.value];
-		}
-		
-		return new LodChunk(chunk.getPos(), height, depth, colors);
+		return new LodChunk(chunk.getPos(), dataPoints, detail);
 	}
 	
 	
@@ -169,21 +178,42 @@ public class LodBuilder
 	
 	/**
 	 * Find the lowest valid point from the bottom.
+	 * @param chunkSections
+	 * @param startX
+	 * @param startZ
+	 * @param endX
+	 * @param endZ
 	 */
-	private short determineBottomPoint(ChunkSection[] chunkSections)
+	private short determineBottomPointForArea(ChunkSection[] chunkSections, 
+			int startX, int startZ, int endX, int endZ)
 	{
+		int numberOfBlocksRequired = ((endX-startX) * (endZ-startZ) / 2);
+		
 		// search from the bottom up
-		for(int i = 0; i < CHUNK_DATA_WIDTH; i++)
+		for(int section = 0; section < CHUNK_DATA_WIDTH; section++)
 		{
 			for(int y = 0; y < CHUNK_SECTION_HEIGHT; y++)
 			{
-				if(isLayerValidLodPoint(chunkSections, i, y))
+				int numberOfBlocksFound = 0;
+				
+				for(int x = startX; x < endX; x++)
 				{
-					// we found
-					// enough blocks in this
-					// layer to count as an
-					// LOD point
-					return (short) (y + (i * CHUNK_SECTION_HEIGHT));
+					for(int z = startZ; z < endZ; z++)
+					{
+						if(isLayerValidLodPoint(chunkSections, section, y, x, z))
+						{
+							numberOfBlocksFound++;
+							
+							if (numberOfBlocksFound >= numberOfBlocksRequired)
+							{
+								// we found
+								// enough blocks in this
+								// layer to count as an
+								// LOD point
+								return (short) (y + (section * CHUNK_SECTION_HEIGHT));
+							}
+						}
+					}
 				}
 			}
 		}
@@ -207,21 +237,42 @@ public class LodBuilder
 	
 	/**
 	 * Find the highest valid point from the Top
+	 * @param chunkSections
+	 * @param startX
+	 * @param startZ
+	 * @param endX
+	 * @param endZ
 	 */
-	private short determineTopPoint(ChunkSection[] chunkSections)
+	private short determineHeightPointForArea(ChunkSection[] chunkSections, 
+			int startX, int startZ, int endX, int endZ)
 	{
+		int numberOfBlocksRequired = ((endX-startX) * (endZ-startZ) / 2);
+		
 		// search from the top down
 		for(int section = chunkSections.length - 1; section >= 0; section--)
 		{
 			for(int y = CHUNK_DATA_WIDTH - 1; y >= 0; y--)
 			{
-				if(isLayerValidLodPoint(chunkSections, section, y))
+				int numberOfBlocksFound = 0;
+				
+				for(int x = startX; x < endX; x++)
 				{
-					// we found
-					// enough blocks in this
-					// layer to count as an
-					// LOD point
-					return (short) (y + (section * CHUNK_SECTION_HEIGHT));
+					for(int z = startZ; z < endZ; z++)
+					{
+						if(isLayerValidLodPoint(chunkSections, section, y, x, z))
+						{
+							numberOfBlocksFound++;
+							
+							if (numberOfBlocksFound >= numberOfBlocksRequired)
+							{
+								// we found
+								// enough blocks in this
+								// layer to count as an
+								// LOD point
+								return (short) (y + (section * CHUNK_SECTION_HEIGHT));
+							}
+						}
+					}
 				}
 			}
 		}
@@ -233,13 +284,13 @@ public class LodBuilder
 	/**
 	 * Find the highest point from the Top
 	 */
-	@SuppressWarnings("unused")
-	private short determineTopPoint(Heightmap heightmap, int endZ)
+	private short determineHeightPoint(Heightmap heightmap,
+			int startX, int startZ, int endX, int endZ)
 	{
 		short highest = 0;
-		for(int x = 0; x < LodChunk.WIDTH; x++)
+		for(int x = startX; x < endX; x++)
 		{
-			for(int z = 0; z < LodChunk.WIDTH; z++)
+			for(int z = startZ; z < endZ; z++)
 			{
 				short newHeight = (short) heightmap.getHeight(x, z);
 				if (newHeight > highest)
@@ -251,96 +302,20 @@ public class LodBuilder
 	}
 	
 	/**
-	 * Generate the color for the given chunk in the given ColorDirection.
-	 */
-	private Color  generateLodColorForDirection(IChunk chunk, ColorDirection colorDir)
-	{
-		Minecraft mc =  Minecraft.getInstance();
-		BlockColors bc = mc.getBlockColors();
-		
-		switch (colorDir)
-		{
-		case TOP:
-			return generateLodColorVertical(chunk, colorDir, bc);
-		case BOTTOM:
-			return generateLodColorVertical(chunk, colorDir, bc);
-			
-		case NORTH:
-			return generateLodColorHorizontal(chunk, colorDir, bc);
-		case SOUTH:
-			return generateLodColorHorizontal(chunk, colorDir, bc);
-			
-		case EAST:
-			return generateLodColorHorizontal(chunk, colorDir, bc);
-		case WEST:
-			return generateLodColorHorizontal(chunk, colorDir, bc);
-		}
-		
-		return INVISIBLE;
-	}
-	
-	
-	
-	
-	
-	
-	/**
-	 * Is the layer between the given X, Z, and dataIndex
-	 * values a valid LOD point?
-	 */
-	private boolean isLayerValidLodPoint(
-			ChunkSection[] chunkSections,
-			int sectionIndex, int y)
-	{
-		// search through this layer
-		int layerBlocks = 0;
-		
-		for(int x = 0; x < LodChunk.WIDTH; x++)
-		{
-			for(int z = 0; z < LodChunk.WIDTH; z++)
-			{
-				if(chunkSections[sectionIndex] == null)
-				{
-					// this section doesn't have any blocks,
-					// it is not a valid section
-					return false;
-				}
-				else
-				{
-					if(chunkSections[sectionIndex].getBlockState(x, y, z) != null && 
-						chunkSections[sectionIndex].getBlockState(x, y, z).getBlock() != Blocks.AIR)
-					{
-						// we found a valid block in
-						// in this layer
-						layerBlocks++;
-						
-						if(layerBlocks >= LOD_BLOCK_REQ)
-						{
-							return true;
-						}
-					}
-				}
-				
-			} // z
-		} // x
-		
-		return false;
-	}
-	
-	/**
-	 * Generates the color of the top or bottom of the given chunk.
+	 * Generate the color for the given chunk using biome
+	 * water color, foliage color, and grass color.
 	 * 
-	 * @throws IllegalArgumentException if given a ColorDirection other than TOP or BOTTOM
+	 * @param config_useSolidBlocksInColorGen <br>
+	 * 			If true we look down from the top of the <br>
+	 * 			chunk until we find a non-invisible block, and then use <br>
+	 * 			its color. If false we generate the color immediately for <br>
+	 * 			each x and z.
+	 * @param config_useBiomeColors <br>
+	 * 			If true use biome foliage, water, and grass colors, <br>
+	 * 			otherwise use the  
 	 */
-	private Color generateLodColorVertical(IChunk chunk, ColorDirection colorDir, BlockColors bc)
+	private Color  generateLodColorForArea(IChunk chunk, LodBuilderConfig config, int startX, int startZ, int endX, int endZ)
 	{
-		if(colorDir != ColorDirection.TOP && colorDir != ColorDirection.BOTTOM)
-		{
-			throw new IllegalArgumentException("generateLodColorVertical only accepts the ColorDirection TOP or BOTTOM");
-		}
-		
-		
-		
 		ChunkSection[] chunkSections = chunk.getSections();
 		
 		int numbOfBlocks = 0;
@@ -348,42 +323,73 @@ public class LodBuilder
 		int green = 0;
 		int blue = 0;
 		
-		boolean goTopDown = (colorDir == ColorDirection.TOP);
 		
-		
-		// either go top down or bottom up
-		int dataStart = goTopDown? chunkSections.length - 1 : 0;
-		int dataMax = chunkSections.length; 
-		int dataMin = 0;
-		int dataIncrement = goTopDown? -1 : 1;
-		
-		int topStart = goTopDown? CHUNK_SECTION_HEIGHT - 1 : 0;
-		int topMax = CHUNK_SECTION_HEIGHT;
-		int topMin = 0;
-		int topIncrement =  goTopDown? -1 : 1;
-		
-		for(int x = 0; x < CHUNK_DATA_WIDTH; x++)
+		for(int x = startX; x < endX; x++)
 		{
-			for(int z = 0; z < CHUNK_DATA_WIDTH; z++)
+			for(int z = startZ; z < endZ; z++)
 			{
 				boolean foundBlock = false;
 				
-				for(int i = dataStart; !foundBlock && i >= dataMin && i < dataMax; i += dataIncrement)
+				// go top down
+				for(int i = chunkSections.length - 1; !foundBlock && i >= 0; i--)
 				{
-					if(!foundBlock && chunkSections[i] != null)
+					if( !foundBlock && (chunkSections[i] != null || !config.useSolidBlocksInColorGen))
 					{
-						for(int y = topStart; !foundBlock && y >= topMin && y < topMax; y += topIncrement)
+						for(int y = CHUNK_SECTION_HEIGHT - 1; !foundBlock && y >= 0; y--)
 						{
-							int ci;
-							ci = chunkSections[i].getBlockState(x, y, z).materialColor.colorValue;
+							int colorInt = 0;
+							BlockState blockState = null;
 							
-							if(ci == 0)
+							if (chunkSections[i] != null)
+							{
+								blockState = chunkSections[i].getBlockState(x, y, z);
+								colorInt = blockState.materialColor.colorValue;
+							}
+							
+							if(colorInt == 0 && config.useSolidBlocksInColorGen)
 							{
 								// skip air or invisible blocks
 								continue;
 							}
 							
-							Color c = intToColor(ci);
+							if (config.useBiomeColors)
+							{
+								Biome biome = chunk.getBiomes().getNoiseBiome(x, y + i * chunkSections.length, z);
+								
+								if (biome.getCategory() == Biome.Category.OCEAN ||
+										biome.getCategory() == Biome.Category.RIVER)
+								{
+									colorInt = biome.getWaterColor();
+								}
+								else if (biome.getCategory() == Biome.Category.EXTREME_HILLS)
+								{
+									colorInt = Blocks.STONE.getMaterialColor().colorValue;
+								}
+								else if (biome.getCategory() == Biome.Category.ICY)
+								{
+									colorInt = LodUtil.colorToInt(Color.WHITE);
+								}
+								else if (biome.getCategory() == Biome.Category.THEEND)
+								{
+									colorInt = Blocks.END_STONE.getDefaultState().materialColor.colorValue;
+								}
+								else if (config.useSolidBlocksInColorGen)
+								{
+									colorInt = getColorForBlock(x, z, blockState, biome);
+								}
+								else
+								{
+									colorInt = biome.getGrassColor(x, z);
+								}
+							}
+							else
+							{
+								Biome biome = chunk.getBiomes().getNoiseBiome(x, y + i * chunkSections.length, z);
+								colorInt = getColorForBlock(x,z, blockState, biome);
+							}
+							
+							
+							Color c = LodUtil.intToColor(colorInt);
 							
 							red += c.getRed();
 							green += c.getGreen();
@@ -411,224 +417,72 @@ public class LodBuilder
 		
 		return new Color(red, green, blue);
 	}
-		
-		/*
-		 * unused variation that can be used with only the heightmap,
-		 * although it just returns the foliage color, so it shouldn't
-		 * be used normally.
-			
-			Heightmap heightmap = chunk.getHeightmap(Heightmap.Type.WORLD_SURFACE_WG);
-			
-			int numbOfBlocks = CHUNK_DATA_WIDTH * CHUNK_DATA_WIDTH;
-			int red = 0;
-			int green = 0;
-			int blue = 0;
-			
-			for(int x = 0; x < CHUNK_DATA_WIDTH; x++)
-			{
-				Biome biome = chunk.getBiomes().getNoiseBiome(x,z, heightmap.getHeight(x, z));
-				Color c = intToColor(biome.getFoliageColor());
-				
-				red += c.getRed();
-				green += c.getGreen();
-				blue += c.getBlue();
-			}
-		}
-		
-		red /= numbOfBlocks;
-		green /= numbOfBlocks;
-		blue /= numbOfBlocks;
-		
-		return new Color(red, green, blue);
-	 */
-	
-	
+
+
+
 	/**
-	 * Generates the color for the sides of the given chunk.
+	 * Returns a color int for a given block.
 	 */
-	private Color generateLodColorHorizontal(IChunk chunk, ColorDirection colorDir, BlockColors bc)
+	private int getColorForBlock(int x, int z, BlockState blockState, Biome biome)
 	{
-		if(colorDir != ColorDirection.NORTH && colorDir != ColorDirection.SOUTH && colorDir != ColorDirection.EAST && colorDir != ColorDirection.WEST)
+		int colorInt = 0;
+		
+		if (blockState == Blocks.AIR.getDefaultState())
 		{
-			throw new IllegalArgumentException("generateLodColorHorizontal only accepts the ColorDirection N (North), S (South), E (East), or W (West)");
+			colorInt = biome.getGrassColor(x, z);
 		}
 		
-		ChunkSection[] chunkSections = chunk.getSections();
-		
-		int numbOfBlocks = 0;
-		int red = 0;
-		int green = 0;
-		int blue = 0;
-		
-		
-		// these don't change since the over direction doesn't matter
-		int overStart = 0;
-		int overIncrement = 1;
-		
-		// determine which direction is "in"
-		int inStart = 0;
-		int inIncrement = 1;
-		switch (colorDir)
+		else if (blockState.getBlock() instanceof LeavesBlock)
 		{
-		case NORTH:
-			inStart = 0;
-			inIncrement = 1;
-			break;
-		case SOUTH:
-			inStart = CHUNK_DATA_WIDTH - 1;
-			inIncrement = -1;
-			break;
-		case EAST:
-			inStart = 0;
-			inIncrement = 1;
-			break;
-		case WEST:
-			inStart = CHUNK_DATA_WIDTH - 1;
-			inIncrement = -1;
-			break;
-		default:
-			// we were given an invalid position, return invisible.
-			// this shouldn't happen and is mostly here to make the
-			// compiler happy
-			return INVISIBLE;
+			Color leafColor = LodUtil.intToColor(biome.getFoliageColor()).darker();
+			colorInt = LodUtil.colorToInt(leafColor);
+		}
+		else if (blockState.getBlock() instanceof GrassBlock)
+		{
+			colorInt = biome.getGrassColor(x, z);
+		}
+		else if (blockState.getBlock() instanceof FlowingFluidBlock)
+		{
+			colorInt = biome.getWaterColor();
+		}
+		else
+		{
+			colorInt = blockState.materialColor.colorValue;
 		}
 		
-		
-		for (int section = 0; section < chunkSections.length; section++)
-		{
-			if (chunkSections[section] == null)
-				continue;
-			
-			for (int y = 0; y < CHUNK_SECTION_HEIGHT; y++)
-			{
-				boolean foundBlock = false;
-				
-				// over moves "over" the side of the chunk
-				// in moves "into" the chunk until it finds a block
-				for (int over = overStart; !foundBlock && over >= 0 && over < CHUNK_DATA_WIDTH; over += overIncrement)
-				{
-					for (int in = inStart; !foundBlock && in >= 0 && in < CHUNK_DATA_WIDTH; in += inIncrement)
-					{
-						int x = -1;
-						int z = -1;
-						
-						// determine which should be X and Z							
-						switch(colorDir)
-						{
-						case NORTH:
-							x = over;
-							z = in;
-							break;
-						case SOUTH:
-							x = over;
-							z = in;
-							break;
-						case EAST:
-							x = in;
-							z = over;
-							break;
-						case WEST:
-							x = in;
-							z = over;
-							break;
-						default:
-							// here to make the compiler happy
-							break;
-						}
-						
-						// if this block is buried, under other blocks
-						// don't add it
-						if(!isBlockPosVisible(chunkSections[section], x,y,z))
-						{
-							// go to the next "over" block location,
-							// don't look at the next "in" location,
-							// since the next "in" location will more than
-							// likely still be covered
-							in = CHUNK_DATA_WIDTH + 2;
-							continue;
-						}
-						
-						
-						int ci;
-						ci = chunkSections[section].getBlockState(x, y, z).getMaterial().getColor().colorValue;
-						
-						if (ci == 0) {
-							// skip air or invisible blocks
-							continue;
-						}
-						
-						Color c = intToColor(ci);
-						
-						red += c.getRed();
-						green += c.getGreen();
-						blue += c.getBlue();
-						
-						numbOfBlocks++;
-						
-						// we found a valid block, skip to the
-						// next x and z
-						foundBlock = true;
-					}
-				}
-				
-				
-			}
-		}
-		
-		// if we didn't find any blocks return invisible
-		if(numbOfBlocks == 0)
-			return INVISIBLE;
-		
-		red /= numbOfBlocks;
-		green /= numbOfBlocks;
-		blue /= numbOfBlocks;
-		
-		return new Color(red, green, blue);
+		return colorInt;
 	}
 	
 	
 	
-	private static BlockState airState = Blocks.AIR.getDefaultState();
-	
-	/** 
-	 * returns true if the block at the given coordinates is open to
-	 * air on at least one side.
+	/**
+	 * Is the layer between the given X, Z, and dataIndex
+	 * values a valid LOD point?
 	 */
-	private boolean isBlockPosVisible(ChunkSection chunkSection, int x, int y, int z)
+	private boolean isLayerValidLodPoint(
+			ChunkSection[] chunkSections,
+			int sectionIndex, int y, 
+			int x, int z)
 	{
-		/*
-		// above
-		if (y+1 < CHUNK_SECTION_HEIGHT) // don't go over the top
-			if (chunkSection.getBlockState(x, y+1, z).getBlock() == (Blocks.AIR))
+		if(chunkSections[sectionIndex] == null)
+		{
+			// this section doesn't have any blocks,
+			// it is not a valid section
+			return false;
+		}
+		else
+		{
+			if(chunkSections[sectionIndex].getBlockState(x, y, z) != null && 
+				chunkSections[sectionIndex].getBlockState(x, y, z).getBlock() != Blocks.AIR)
+			{
 				return true;
-		// below
-		if (y-1 >= 0) // don't go below the bottom
-			if (chunkSection.getBlockState(x, y-1, z).getBlock() == (Blocks.AIR))
-				return true;
-		*/
+			}
+		}
 		
-		// north
-		if (z-1 > 0)
-			if (chunkSection.getBlockState(x, y, z-1) == airState)
-				return true;
-		// south
-		if (z+1 < LodChunk.WIDTH)
-			if (chunkSection.getBlockState(x, y, z+1) == airState)
-				return true;
-		
-		// east
-		if (x+1 <= LodChunk.WIDTH)
-			if (chunkSection.getBlockState(x+1, y, z) == airState)
-				return true;
-		// west
-		if (x-1 >= 0)
-			if (chunkSection.getBlockState(x-1, y, z) == airState)
-				return true;
-		
-			
 		return false;
 	}
-
+	
+	
 
 
 	
@@ -636,28 +490,4 @@ public class LodBuilder
 	
 	
 	
-	
-	/**
-	 * Convert a BlockColors int into a Color object.
-	 */
-	private Color intToColor(int num)
-	{
-		int filter = 0b11111111;
-		
-		int red = (num >> 16 ) & filter;
-		int green = (num >> 8 ) & filter;
-		int blue = num & filter;
-		
-		return new Color(red, green, blue);
-	}
-	
-	/**
-	 * Convert a Color into a BlockColors object.
-	 */
-	@SuppressWarnings("unused")
-	private int colorToInt(Color color)
-	{
-		return color.getRGB();
-	}
-	
 }

src/main/java/com/seibel/lod/builders/LodBuilderConfig.java

@@ -0,0 +1,41 @@
+package com.seibel.lod.builders;
+
+/**
+ * This is used to easily configure how LodChunks are generated.
+ * Generally this will only be used if we want to generate a
+ * LodChunk using a incomplete Chunk, otherwise the defaults
+ * work best for a fully generated chunk (IE has correct surface blocks).
+ * 
+ * @author James Seibel
+ * @version 6-27-2021
+ */
+public class LodBuilderConfig
+{
+	public boolean useHeightmap;
+	public boolean useBiomeColors;
+	public boolean useSolidBlocksInColorGen;
+	
+	/** default settings for a normal chunk 
+	 * useHeightmap = false
+	 * useBiomeColors = false
+	 * useSolidBlocksInColorGen = true
+	 */
+	public LodBuilderConfig()
+	{
+		useHeightmap = false;
+		useBiomeColors = false;
+		useSolidBlocksInColorGen = true;
+	}
+	
+	/**
+	 * @param newUseHeightmap
+	 * @param newUseBiomeColors
+	 * @param newUseSolidBlocksInBiomeColor
+	 */
+	public LodBuilderConfig(boolean newUseHeightmap, boolean newUseBiomeColors, boolean newUseSolidBlocksInBiomeColor)
+	{
+		useHeightmap = newUseHeightmap;
+		useBiomeColors = newUseBiomeColors;
+		useSolidBlocksInColorGen = newUseSolidBlocksInBiomeColor;
+	}
+}

src/main/java/com/seibel/lod/builders/LodChunkGenWorker.java

@@ -1,125 +0,0 @@
-package com.seibel.lod.builders;
-
-import com.seibel.lod.objects.LodDimension;
-import com.seibel.lod.objects.LodRegion;
-import com.seibel.lod.proxy.ClientProxy;
-import com.seibel.lod.render.LodRender;
-import com.seibel.lod.util.LodUtils;
-
-import net.minecraft.util.math.ChunkPos;
-import net.minecraft.world.chunk.ChunkStatus;
-import net.minecraft.world.chunk.IChunk;
-import net.minecraft.world.server.ServerWorld;
-import net.minecraftforge.common.WorldWorkerManager.IWorker;
-
-/**
- * This is used to generate a LodChunk at a given ChunkPos.
- * 
- * @author James Seibel
- * @version 03-31-2021
- */
-public class LodChunkGenWorker implements IWorker
-{
-    private ServerWorld serverWorld;
-    private ChunkPos pos;
-    private LodDimension lodDim;
-    private LodBuilder lodBuilder;
-    private LodBufferBuilder lodBufferBuilder;
-    private LodRender lodRender;
-    
-    public LodChunkGenWorker(ChunkPos newPos, LodRender newLodRenderer, 
-    		LodBuilder newLodBuilder, LodBufferBuilder newLodBufferBuilder, 
-    		LodDimension newLodDimension)
-    {
-        serverWorld  = LodUtils.getServerWorldFromDimension(newLodDimension.dimension);
-        if (serverWorld == null)
-        	throw new IllegalArgumentException("LodChunkGenWorker must have a non-null ServerWorld"); 
-        	
-        pos = newPos;
-        lodDim = newLodDimension;
-        lodBuilder = newLodBuilder;
-        lodBufferBuilder = newLodBufferBuilder;
-        lodRender = newLodRenderer;
-    }
-    
-    @Override
-    public boolean doWork()
-    {
-        if (pos != null)
-        {
-            int x = pos.x;
-            int z = pos.z;
-            
-            // only generate LodChunks if they can
-            // be added to the current LodDimension
-            if (lodDim.regionIsInRange(pos.x / LodRegion.SIZE, pos.z / LodRegion.SIZE))
-            {
-                IChunk chunk;// = serverWorld.getChunk(x, z, ChunkStatus.EMPTY, true);
-                
-                //long startTime = System.currentTimeMillis();
-                chunk = serverWorld.getChunk(x, z, ChunkStatus.FEATURES);
-                //long endTime = System.currentTimeMillis();
-                //System.out.println(endTime - startTime + "\t" + lodBuilder.hasBlockData(chunk));
-                
-                
-                lodBuilder.generateLodChunkAsync(chunk, ClientProxy.getLodWorld(), serverWorld);
-                // this is called so that the new LOD chunk is drawn
-                // after it is generated
-                lodRender.regenerateLODsNextFrame();
-                
-                
-                // useful for debugging
-//                ClientProxy.LOGGER.info(lodDim.getNumberOfLods());
-                
-//                if (lodDim.getLodFromCoordinates(x, z) != null)
-//                	ClientProxy.LOGGER.info(x + " " + z + " Success!");
-//                else
-//                	ClientProxy.LOGGER.info(x + " " + z);
-            }
-            // can be used for debugging
-            //else
-            //{
-            //	System.out.println("Out of range " + x + " " + z);
-            //}
-            
-            lodBufferBuilder.numberOfChunksWaitingToGenerate--;
-            
-            pos = null;
-        }
-        
-        return false;
-    }
-    
-    @Override
-    public boolean hasWork()
-    {
-        return pos != null;
-    }
-    
-    /*
-     * performance/generation tests related to
-     * serverWorld.getChunk(x, z, ChunkStatus. *** )
-     
-     true/false is whether they generated blocks or not
-     the time is how long it took to generate
-     
-     ChunkStatus.EMPTY					0  - 1  ms	false	(empty, what did you expect? :P)
-     ChunkStatus.STRUCTURE_REFERENCES	1  - 2  ms  false	(no height, only generates some chunks)
-     ChunkStatus.BIOMES 				1  - 10 ms	false	(no height)
-     ChunkStatus.NOISE					4  - 15 ms	true	(all blocks are stone)
-     ChunkStatus.LIQUID_CARVERS			6  - 12 ms	true	(no snow/trees, just grass)
-     ChunkStatus.SURFACE				5  - 15 ms	true	(no snow/trees, just grass)
-     ChunkStatus.CARVERS				5  - 30 ms	true	(no snow/trees, just grass)
-     ChunkStatus.FEATURES				7  - 25 ms	true
-     ChunkStatus.HEIGHTMAPS 			20 - 40 ms	true
-     ChunkStatus.LIGHT					20 - 40 ms	true
-     ChunkStatus.FULL 					30 - 50 ms	true
-     ChunkStatus.SPAWN			   		50 - 80 ms	true
-     
-     
-     At this point I would suggest using FEATURES, as it generates snow and trees
-     (and any other object that is needed to make biomes distinct)
-     
-     Otherwise if snow/trees aren't necessary SURFACE is the next fastest (although not by much)
-     */
-}

src/main/java/com/seibel/lod/builders/lodTemplates/AbstractLodTemplate.java

@@ -1,7 +1,6 @@
 package com.seibel.lod.builders.lodTemplates;
 
-import java.awt.Color;
-
+import com.seibel.lod.enums.LodDetail;
 import com.seibel.lod.objects.LodChunk;
 import com.seibel.lod.objects.LodDimension;
 
@@ -12,16 +11,10 @@ import net.minecraft.client.renderer.BufferBuilder;
  * BufferBuilders.
  * 
  * @author James Seibel
- * @version 05-07-2021
+ * @version 06-16-2021
  */
 public abstract class AbstractLodTemplate
 {
-	/** alpha used when drawing chunks in debug mode */
-	protected int debugAlpha = 255; // 0 - 255
-	protected Color debugBlack = new Color(0, 0, 0, debugAlpha);
-	protected Color debugWhite = new Color(255, 255, 255, debugAlpha);
-	
-	
 	public abstract void addLodToBuffer(BufferBuilder buffer, 
 			LodDimension lodDim, LodChunk lod, 
 			double xOffset, double yOffset, double zOffset, 
@@ -35,7 +28,9 @@ public abstract class AbstractLodTemplate
 		buffer.pos(x, y, z).color(red, green, blue, alpha).endVertex();
 	}
 	
-	
+	/** Returns in bytes how much buffer memory is required
+	 * for one LOD object */
+	public abstract int getBufferMemoryForSingleLod(LodDetail detail);
 	
 	
 	

src/main/java/com/seibel/lod/builders/lodTemplates/CubicLodTemplate.java

@@ -1,13 +1,12 @@
 package com.seibel.lod.builders.lodTemplates;
 
 import java.awt.Color;
-import java.util.EnumSet;
 
 import com.seibel.lod.enums.ColorDirection;
-import com.seibel.lod.enums.RelativeChunkPos;
+import com.seibel.lod.enums.LodDetail;
+import com.seibel.lod.handlers.LodConfig;
 import com.seibel.lod.objects.LodChunk;
 import com.seibel.lod.objects.LodDimension;
-import com.seibel.lod.util.LodConfig;
 
 import net.minecraft.client.renderer.BufferBuilder;
 import net.minecraft.util.math.AxisAlignedBB;
@@ -16,7 +15,7 @@ import net.minecraft.util.math.AxisAlignedBB;
  * Builds LODs as rectangular prisms.
  * 
  * @author James Seibel
- * @version 05-31-2021
+ * @version 06-16-2021
  */
 public class CubicLodTemplate extends AbstractLodTemplate
 {
@@ -37,140 +36,37 @@ public class CubicLodTemplate extends AbstractLodTemplate
 		
 		// Add this LOD to the BufferBuilder
 		// using the quality setting set by the config
-		switch(LodConfig.CLIENT.lodDetail.get())
+		LodDetail detail = LodConfig.CLIENT.lodDetail.get();
+		
+		int halfWidth = detail.dataPointWidth / 2;
+		
+		for(int i = 0; i < detail.dataPointLengthCount * detail.dataPointLengthCount; i++)
 		{
-		// add a single LOD object for this chunk
-		case SINGLE:
+			int startX = detail.startX[i];
+			int startZ = detail.startZ[i];
+			int endX = detail.endX[i];
+			int endZ = detail.endZ[i];
 			
 			// returns null if the lod is empty at the given location
-			bbox = generateBoundingBox(centerLod.getHeight(), centerLod.getDepth(), LodChunk.WIDTH, xOffset, yOffset, zOffset);
+			bbox = generateBoundingBox(
+					centerLod.getAverageHeightOverArea(startX, startZ, endX, endZ), 
+					centerLod.getAverageDepthOverArea(startX, startZ, endX, endZ), 
+					detail.dataPointWidth, 
+					xOffset - (halfWidth / 2) + detail.startX[i],
+					yOffset, 
+					zOffset - (halfWidth / 2) + detail.startZ[i]);
 			
 			if (bbox != null)
 			{
-				addBoundingBoxToBuffer(buffer, bbox, generateLodColors(centerLod, false));
-			}
-			
-			break;
-		
-		// add 4 LOD objects for this chunk
-		case DOUBLE:
-			/*
-			 * This method generates LODs using the LodChunks that
-			 * are adjacent to create an average quarter and thus 
-			 * smooth the transition between chunks.
-			 */
-			
-			// get the adjacent LodChunks
-			LodChunk[] lods = new LodChunk[RelativeChunkPos.values().length];
-			for(RelativeChunkPos pos : RelativeChunkPos.values())
-				lods[pos.index] = lodDim.getLodFromCoordinates(centerLod.x + pos.x, centerLod.z + pos.z);
-			
-			
-			int halfWidth = LodChunk.WIDTH / 2;
-			
-			// use the adjacent chunks to generate quarter sections
-			for(EnumSet<RelativeChunkPos> set : RelativeChunkPos.CORNERS)
-			{
-				int x = 0;
-				int z = 0;
-				
-				// Weight the center LodChunk by this amount
-				// when taking the average.
-				// this should be between 3 and 6; 
-				// if set to 1 (no extra weight)
-				// then the chunks don't appear to be averaged.
-				int centerWeight = 3;
-				
-				// how many LodChunks adjacent to the center
-				// are valid?
-				int validPoints = centerWeight;
-				
-				int avgHeight = centerLod.getHeight() * centerWeight;
-				int avgDepth = centerLod.getDepth() * centerWeight;
-				
-				int[][] colorAverages = new int[ColorDirection.values().length][3];
-				Color[] colorToAdd = generateLodColors(centerLod, debugging);
-				for(int i = 0; i < centerWeight; i++)
-					colorAverages = addColorToColorAverages(colorAverages, colorToAdd);
-				
-				for(RelativeChunkPos cornerPos : set)
-				{
-					// set the x and y location based on which
-					// corner we are working on
-					if (RelativeChunkPos.DIAGONAL.contains(cornerPos))
-					{
-						x = Math.min(cornerPos.x, 0) * halfWidth;
-						z = Math.min(cornerPos.z, 0) * halfWidth;
-					}
-					
-					LodChunk cornerLod = lods[cornerPos.index];
-					if (cornerLod != null && !cornerLod.isLodEmpty())
-					{
-						validPoints++;
-						
-						avgHeight += cornerLod.getHeight();
-						avgDepth += cornerLod.getDepth();
-						
-						// only generate average colors if we aren't debugging
-						// (this is to prevent everything from becoming grey)
-						if (!debugging)
-							colorToAdd = generateLodColors(cornerLod, debugging);
-						else
-							colorToAdd = generateLodColors(centerLod, debugging);
-						// add to the running color average
-						colorAverages = addColorToColorAverages(colorAverages, colorToAdd);
-					}
-				}
-				
-				
-				// convert the heights into actual averages
-				avgHeight /= validPoints;
-				avgDepth /= validPoints;
-				// calculate the average colors
-				Color[] colors = new Color[ColorDirection.values().length];
-				for(ColorDirection dir : ColorDirection.values())
-				{
-					for(int rgbIndex = 0; rgbIndex < 3; rgbIndex++)
-						colorAverages[dir.value][rgbIndex] /= validPoints;
-					colors[dir.value] = new Color(colorAverages[dir.value][0], colorAverages[dir.value][1], colorAverages[dir.value][2]);
-				}
-				
-				
-				// returns null if the lod is empty at the given location
-				bbox = generateBoundingBox(avgHeight, avgDepth, halfWidth, xOffset - (halfWidth / 2) + x + 12, yOffset, zOffset - (halfWidth / 2) + z + 12);
-				
-				if (bbox != null)
-				{
-					addBoundingBoxToBuffer(buffer, bbox, colors);
-				}
-			}
-			break;
-		} // case
-	}
-	
-	
-	private int[][] addColorToColorAverages(int[][] colorAverages, Color[] colorToAdd) 
-	{
-		for(ColorDirection dir : ColorDirection.values())
-		{
-			// convert the colorToAdd to an int array
-			float[] colorCompoments = new float[4];
-			colorCompoments = colorToAdd[dir.value].getColorComponents(colorCompoments);
-			
-			// add each color component to the array
-			for(int rgbIndex = 0; rgbIndex < 3; rgbIndex++)
-			{
-				// * 255 + 0.5 taken from the Color java class
-				colorAverages[dir.value][rgbIndex] += (int) (colorCompoments[rgbIndex] * 255 + 0.5);
+				addBoundingBoxToBuffer(buffer, bbox, centerLod.getAverageColorOverArea(startX, startZ, endX, endZ, debugging));
 			}
 		}
-		
-		return colorAverages;
 	}
 	
 	
 	
 	
+	
 	private AxisAlignedBB generateBoundingBox(int height, int depth, int width, double xOffset, double yOffset, double zOffset)
 	{
 		// don't add an LOD if it is empty
@@ -189,6 +85,45 @@ public class CubicLodTemplate extends AbstractLodTemplate
 	
 	
 	
+	private void addBoundingBoxToBuffer(BufferBuilder buffer, AxisAlignedBB bb, Color c)
+	{
+		// top (facing up)
+		addPosAndColor(buffer, bb.minX, bb.maxY, bb.minZ, c.getRed(), c.getGreen(), c.getBlue(), c.getAlpha());
+		addPosAndColor(buffer, bb.minX, bb.maxY, bb.maxZ, c.getRed(), c.getGreen(), c.getBlue(), c.getAlpha());
+		addPosAndColor(buffer, bb.maxX, bb.maxY, bb.maxZ, c.getRed(), c.getGreen(), c.getBlue(), c.getAlpha());
+		addPosAndColor(buffer, bb.maxX, bb.maxY, bb.minZ, c.getRed(), c.getGreen(), c.getBlue(), c.getAlpha());
+		// bottom (facing down)
+		addPosAndColor(buffer, bb.maxX, bb.minY, bb.minZ, c.getRed(), c.getGreen(), c.getBlue(), c.getAlpha());
+		addPosAndColor(buffer, bb.maxX, bb.minY, bb.maxZ, c.getRed(), c.getGreen(), c.getBlue(), c.getAlpha());
+		addPosAndColor(buffer, bb.minX, bb.minY, bb.maxZ, c.getRed(), c.getGreen(), c.getBlue(), c.getAlpha());
+		addPosAndColor(buffer, bb.minX, bb.minY, bb.minZ, c.getRed(), c.getGreen(), c.getBlue(), c.getAlpha());
+
+		// south (facing -Z) 
+		addPosAndColor(buffer, bb.maxX, bb.minY, bb.maxZ, c.getRed(), c.getGreen(), c.getBlue(), c.getAlpha());
+		addPosAndColor(buffer, bb.maxX, bb.maxY, bb.maxZ, c.getRed(), c.getGreen(), c.getBlue(), c.getAlpha());
+		addPosAndColor(buffer, bb.minX, bb.maxY, bb.maxZ, c.getRed(), c.getGreen(), c.getBlue(), c.getAlpha());
+		addPosAndColor(buffer, bb.minX, bb.minY, bb.maxZ, c.getRed(), c.getGreen(), c.getBlue(), c.getAlpha());
+		// north (facing +Z)
+		addPosAndColor(buffer, bb.minX, bb.minY, bb.minZ, c.getRed(), c.getGreen(), c.getBlue(), c.getAlpha());
+		addPosAndColor(buffer, bb.minX, bb.maxY, bb.minZ, c.getRed(), c.getGreen(), c.getBlue(), c.getAlpha());
+		addPosAndColor(buffer, bb.maxX, bb.maxY, bb.minZ, c.getRed(), c.getGreen(), c.getBlue(), c.getAlpha());
+		addPosAndColor(buffer, bb.maxX, bb.minY, bb.minZ, c.getRed(), c.getGreen(), c.getBlue(), c.getAlpha());
+
+		// west (facing -X)
+		addPosAndColor(buffer, bb.minX, bb.minY, bb.minZ, c.getRed(), c.getGreen(), c.getBlue(), c.getAlpha());
+		addPosAndColor(buffer, bb.minX, bb.minY, bb.maxZ, c.getRed(), c.getGreen(), c.getBlue(), c.getAlpha());
+		addPosAndColor(buffer, bb.minX, bb.maxY, bb.maxZ, c.getRed(), c.getGreen(), c.getBlue(), c.getAlpha());
+		addPosAndColor(buffer, bb.minX, bb.maxY, bb.minZ, c.getRed(), c.getGreen(), c.getBlue(), c.getAlpha());
+		// east (facing +X)
+		addPosAndColor(buffer, bb.maxX, bb.maxY, bb.minZ, c.getRed(), c.getGreen(), c.getBlue(), c.getAlpha());
+		addPosAndColor(buffer, bb.maxX, bb.maxY, bb.maxZ, c.getRed(), c.getGreen(), c.getBlue(), c.getAlpha());
+		addPosAndColor(buffer, bb.maxX, bb.minY, bb.maxZ, c.getRed(), c.getGreen(), c.getBlue(), c.getAlpha());
+		addPosAndColor(buffer, bb.maxX, bb.minY, bb.minZ, c.getRed(), c.getGreen(), c.getBlue(), c.getAlpha());
+	}
+	
+	
+	
+	@SuppressWarnings("unused")
 	private void addBoundingBoxToBuffer(BufferBuilder buffer, AxisAlignedBB bb, Color[] c)
 	{
 		// top (facing up)
@@ -224,54 +159,16 @@ public class CubicLodTemplate extends AbstractLodTemplate
 		addPosAndColor(buffer, bb.maxX, bb.minY, bb.maxZ, c[ColorDirection.EAST.value].getRed(), c[ColorDirection.EAST.value].getGreen(), c[ColorDirection.EAST.value].getBlue(), c[ColorDirection.EAST.value].getAlpha());
 		addPosAndColor(buffer, bb.maxX, bb.minY, bb.minZ, c[ColorDirection.EAST.value].getRed(), c[ColorDirection.EAST.value].getGreen(), c[ColorDirection.EAST.value].getBlue(), c[ColorDirection.EAST.value].getAlpha());
 	}
-	
-	
-	
-	
-	
-	
-	/**
-	 * Determine the color for each side of this LOD.
-	 */
-	private Color[] generateLodColors(LodChunk lod, boolean debugging)
+
+
+	@Override
+	public int getBufferMemoryForSingleLod(LodDetail detail)
 	{
-		Color[] colors = new Color[ColorDirection.values().length];
-		
-		if (!debugging)
-		{
-			// if NOT debugging, look to the config to determine
-			// how this LOD should be colored
-			switch (LodConfig.CLIENT.lodColorStyle.get())
-			{
-			case TOP:
-				// only add the top's color to the array
-				for(ColorDirection dir : ColorDirection.values())
-					colors[dir.value] = lod.getColor(ColorDirection.TOP);
-				break;
-				
-			case INDIVIDUAL_SIDES:
-				// add each direction's color to the array
-				for(ColorDirection dir : ColorDirection.values())
-					colors[dir.value] = lod.getColor(dir);
-				break;
-			}
-		}
-		else
-		{
-			// if debugging draw the squares as a black and white checker board
-			if ((lod.x + lod.z) % 2 == 0)
-				for(ColorDirection dir : ColorDirection.values())
-					// have each direction be the same
-					// color if debugging
-					colors[dir.value] = debugWhite;
-			else
-				for(ColorDirection dir : ColorDirection.values())
-					colors[dir.value] = debugBlack;
-		}
-		
-		return colors;
+		// (sidesOnACube * pointsInASquare * (positionPoints + colorPoints))) * howManyPointsPerLodChunk
+		return (6 * 4 * (3 + 4)) * detail.dataPointLengthCount * detail.dataPointLengthCount;
 	}
 	
 	
-
+	
+	
 }

src/main/java/com/seibel/lod/builders/lodTemplates/DynamicLodTemplate.java

@@ -1,5 +1,6 @@
 package com.seibel.lod.builders.lodTemplates;
 
+import com.seibel.lod.enums.LodDetail;
 import com.seibel.lod.objects.LodChunk;
 import com.seibel.lod.objects.LodDimension;
 
@@ -12,7 +13,7 @@ import net.minecraft.client.renderer.BufferBuilder;
  * is at a significantly different height.
  * 
  * @author James Seibel
- * @version 05-07-2021
+ * @version 06-16-2021
  */
 public class DynamicLodTemplate extends AbstractLodTemplate
 {
@@ -24,4 +25,10 @@ public class DynamicLodTemplate extends AbstractLodTemplate
 	{
 		System.err.println("DynamicLodTemplate not implemented!");
 	}
+
+	@Override
+	public int getBufferMemoryForSingleLod(LodDetail detail) {
+		// TODO Auto-generated method stub
+		return 0;
+	}
 }

src/main/java/com/seibel/lod/builders/lodTemplates/TriangularLodTemplate.java

@@ -1,16 +1,17 @@
 package com.seibel.lod.builders.lodTemplates;
 
+import com.seibel.lod.enums.LodDetail;
 import com.seibel.lod.objects.LodChunk;
 import com.seibel.lod.objects.LodDimension;
 
 import net.minecraft.client.renderer.BufferBuilder;
 
 /**
- * TODO TriangularLodTemplate
+ * TODO #21 TriangularLodTemplate
  * Builds each LOD chunk as a singular rectangular prism.
  * 
  * @author James Seibel
- * @version 05-07-2021
+ * @version 06-16-2021
  */
 public class TriangularLodTemplate extends AbstractLodTemplate
 {
@@ -22,4 +23,10 @@ public class TriangularLodTemplate extends AbstractLodTemplate
 	{
 		System.err.println("DynamicLodTemplate not implemented!");
 	}
+
+	@Override
+	public int getBufferMemoryForSingleLod(LodDetail detail) {
+		// TODO Auto-generated method stub
+		return 0;
+	}
 }

src/main/java/com/seibel/lod/builders/worldGeneration/LodChunkGenWorker.java

@@ -0,0 +1,556 @@
+package com.seibel.lod.builders.worldGeneration;
+
+import java.util.ConcurrentModificationException;
+import java.util.HashSet;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+import java.util.function.Supplier;
+
+import com.seibel.lod.builders.LodBufferBuilder;
+import com.seibel.lod.builders.LodBuilder;
+import com.seibel.lod.builders.LodBuilderConfig;
+import com.seibel.lod.enums.DistanceGenerationMode;
+import com.seibel.lod.handlers.LodConfig;
+import com.seibel.lod.objects.LodChunk;
+import com.seibel.lod.objects.LodDimension;
+import com.seibel.lod.objects.LodRegion;
+import com.seibel.lod.proxy.ClientProxy;
+import com.seibel.lod.render.LodRenderer;
+
+import net.minecraft.block.Block;
+import net.minecraft.block.BlockState;
+import net.minecraft.util.WeightedList.Entry;
+import net.minecraft.util.math.ChunkPos;
+import net.minecraft.util.palette.UpgradeData;
+import net.minecraft.world.biome.Biome;
+import net.minecraft.world.biome.BiomeContainer;
+import net.minecraft.world.chunk.ChunkPrimer;
+import net.minecraft.world.chunk.ChunkStatus;
+import net.minecraft.world.chunk.IChunk;
+import net.minecraft.world.gen.ChunkGenerator;
+import net.minecraft.world.gen.Heightmap;
+import net.minecraft.world.gen.blockstateprovider.WeightedBlockStateProvider;
+import net.minecraft.world.gen.feature.BlockClusterFeatureConfig;
+import net.minecraft.world.gen.feature.ConfiguredFeature;
+import net.minecraft.world.gen.feature.DecoratedFeatureConfig;
+import net.minecraft.world.gen.feature.FeatureSpread;
+import net.minecraft.world.gen.feature.FeatureSpreadConfig;
+import net.minecraft.world.gen.feature.IceAndSnowFeature;
+import net.minecraft.world.gen.feature.NoFeatureConfig;
+import net.minecraft.world.gen.placement.ConfiguredPlacement;
+import net.minecraft.world.gen.placement.DecoratedPlacementConfig;
+import net.minecraft.world.gen.placement.IPlacementConfig;
+import net.minecraft.world.gen.placement.NoiseDependant;
+import net.minecraft.world.server.ServerWorld;
+import net.minecraft.world.server.ServerWorldLightManager;
+import net.minecraftforge.common.WorldWorkerManager.IWorker;
+
+/**
+ * This is used to generate a LodChunk at a given ChunkPos.
+ * 
+ * @author James Seibel
+ * @version 6-27-2021
+ */
+public class LodChunkGenWorker implements IWorker
+{
+    public static final ExecutorService genThreads = Executors.newFixedThreadPool(Runtime.getRuntime().availableProcessors());
+    
+    private boolean threadStarted = false;
+    private LodChunkGenThread thread;
+    
+    
+    public LodChunkGenWorker(ChunkPos newPos, LodRenderer newLodRenderer, 
+    		LodBuilder newLodBuilder, LodBufferBuilder newLodBufferBuilder, 
+    		LodDimension newLodDimension, ServerWorld newServerWorld,
+    		BiomeContainer newBiomeContainer)
+    {
+        if (newServerWorld == null)
+        	throw new IllegalArgumentException("LodChunkGenWorker must have a non-null ServerWorld"); 
+        	
+        thread = new LodChunkGenThread(newPos, newLodRenderer, 
+        		newLodBuilder, newLodBufferBuilder, 
+        		newLodDimension, newServerWorld);
+    }
+    
+    @Override
+    public boolean doWork()
+    {
+        if (!threadStarted)
+        {
+        	// make sure we don't generate this chunk again
+        	thread.lodDim.addLod(new LodChunk(thread.pos));
+        	
+        	thread.lodBufferBuilder.numberOfChunksWaitingToGenerate--;
+        	
+        	if (LodConfig.CLIENT.distanceGenerationMode.get() == DistanceGenerationMode.SERVER)
+			{
+        		// if we are using SERVER generation that has to be done
+        		// synchronously to prevent crashing and harmful
+        		// interactions with the normal world generator
+        		thread.run();
+			}
+        	else
+        	{
+        		// Every other method can
+        		// be done asynchronously
+        		genThreads.execute(thread);
+        	}
+        	
+        	threadStarted = true;
+        	
+    		// useful for debugging
+//        	ClientProxy.LOGGER.info(thread.lodDim.getNumberOfLods());
+        }
+        
+        return false;
+    }
+    
+    @Override
+    public boolean hasWork()
+    {
+        return !threadStarted;
+    }
+    
+    
+    
+    
+    private class LodChunkGenThread implements Runnable
+    {
+    	public final ServerWorld serverWorld;
+        public final LodDimension lodDim;
+        public final LodBuilder lodBuilder;
+        public final LodRenderer lodRenderer;
+        private LodBufferBuilder lodBufferBuilder;
+    	
+    	private ChunkPos pos;
+    	
+    	public LodChunkGenThread(ChunkPos newPos, LodRenderer newLodRenderer, 
+        		LodBuilder newLodBuilder, LodBufferBuilder newLodBufferBuilder, 
+        		LodDimension newLodDimension, ServerWorld newServerWorld)
+    	{
+    		pos = newPos;
+    		lodRenderer = newLodRenderer;
+    		lodBuilder = newLodBuilder;
+    		lodBufferBuilder = newLodBufferBuilder;
+    		lodDim = newLodDimension;
+    		serverWorld = newServerWorld;
+    	}
+    	
+		@Override
+		public void run()
+		{
+			// only generate LodChunks if they can
+            // be added to the current LodDimension
+			if (lodDim.regionIsInRange(pos.x / LodRegion.SIZE, pos.z / LodRegion.SIZE))
+			{
+//				long startTime = System.currentTimeMillis();
+				
+				switch(LodConfig.CLIENT.distanceGenerationMode.get())
+				{
+				case BIOME_ONLY:
+				case BIOME_ONLY_SIMULATE_HEIGHT:
+					// fastest
+					generateUsingBiomesOnly();
+					break;
+				case SURFACE:
+					// faster
+					generateUsingSurface();
+					break;
+				case FEATURES:
+					// fast
+					generateUsingFeatures();
+					break;
+				case SERVER:
+					// very slow
+					generateWithServer();
+					break;
+				}
+				
+				lodRenderer.regenerateLODsNextFrame();
+				
+				
+//				if (lodDim.getLodFromCoordinates(pos.x, pos.z) != null)
+//					ClientProxy.LOGGER.info(pos.x + " " + pos.z + " Success!");
+//				else
+//					ClientProxy.LOGGER.info(pos.x + " " + pos.z);
+				
+//				long endTime = System.currentTimeMillis();
+//				System.out.println(endTime - startTime);
+				
+			}// if in range
+			
+		}// run
+		
+		
+		
+		/**
+		 * takes about 2-5 ms
+		 */
+		private void generateUsingBiomesOnly()
+		{
+			List<IChunk> chunkList = new LinkedList<>();
+			ChunkPrimer chunk = new ChunkPrimer(pos, UpgradeData.EMPTY);
+			chunkList.add(chunk);
+			
+			ChunkGenerator chunkGen = serverWorld.getWorld().getChunkProvider().getChunkGenerator();
+			
+			// generate the terrain (this is thread safe)
+			ChunkStatus.EMPTY.doGenerationWork(serverWorld, chunkGen, serverWorld.getStructureTemplateManager(), (ServerWorldLightManager) serverWorld.getLightManager(), null, chunkList);
+			// override the chunk status so we can run the next generator stage
+			chunk.setStatus(ChunkStatus.STRUCTURE_REFERENCES);
+			ChunkStatus.BIOMES.doGenerationWork(serverWorld, chunkGen, serverWorld.getStructureTemplateManager(), (ServerWorldLightManager) serverWorld.getLightManager(), null, chunkList);
+			chunk.setStatus(ChunkStatus.STRUCTURE_REFERENCES);
+			
+			
+			// generate fake height data for this LOD
+			int seaLevel = serverWorld.getSeaLevel();
+			
+			boolean simulateHeight = LodConfig.CLIENT.distanceGenerationMode.get() == DistanceGenerationMode.BIOME_ONLY_SIMULATE_HEIGHT;
+			boolean inTheEnd = false;
+			
+			// add fake heightmap data so our LODs aren't at height 0
+			Heightmap heightmap = new Heightmap(chunk, LodChunk.DEFAULT_HEIGHTMAP);
+			for(int x = 0; x < LodChunk.WIDTH && !inTheEnd; x++)
+			{
+				for(int z = 0; z < LodChunk.WIDTH && !inTheEnd; z++)
+				{
+					if (simulateHeight)
+					{
+						// TODO use the biomes around each block to smooth out the transition
+						
+						// these heights are of course aren't super accurate,
+						// they are just to simulate height data where there isn't any
+						switch(chunk.getBiomes().getNoiseBiome(x, seaLevel, z).getCategory())
+						{
+						case NETHER:
+							heightmap.set(x, z, serverWorld.getHeight() / 2);
+							break;
+							
+						case EXTREME_HILLS:
+							heightmap.set(x, z, seaLevel + 30);
+							break;
+						case MESA:
+							heightmap.set(x, z, seaLevel + 20);
+							break;
+						case JUNGLE:
+							heightmap.set(x, z, seaLevel + 20);
+							break;
+						case BEACH:
+							heightmap.set(x, z, seaLevel + 5);
+							break;
+						case NONE:
+							heightmap.set(x, z, 0);
+							break;
+							
+						case OCEAN:
+						case RIVER:
+							heightmap.set(x, z, seaLevel);
+							break;
+							
+						case THEEND:
+							inTheEnd = true;
+							break;
+							
+						// DESERT
+						// FOREST
+						// ICY
+						// MUSHROOM
+						// SAVANNA 
+						// SWAMP
+						// TAIGA
+						// PLAINS
+						default:
+							heightmap.set(x, z, seaLevel + 10);
+							break;
+						}// heightmap switch
+					}
+					else
+					{
+						// we aren't simulating height
+						// always use sea level
+						heightmap.set(x, z, seaLevel);
+					}
+				}// z
+			}// x
+			
+			chunk.setHeightmap(LodChunk.DEFAULT_HEIGHTMAP, heightmap.getDataArray());
+			
+			
+			LodChunk lod;
+			if (!inTheEnd)
+			{
+				lod = lodBuilder.generateLodFromChunk(chunk, new LodBuilderConfig(true, true, false));
+			}
+			else
+			{
+				// if we are in the end, don't generate any chunks.
+				// Since we don't know where the islands are, everything
+				// generates the same and it looks really bad.
+				lod = new LodChunk(chunk.getPos().x, chunk.getPos().z);
+			}
+			lodDim.addLod(lod);
+		}
+		
+		
+		/**
+		 * takes about 10 - 20 ms
+		 */
+		private void generateUsingSurface()
+		{
+			List<IChunk> chunkList = new LinkedList<>();
+			ChunkPrimer chunk = new ChunkPrimer(pos, UpgradeData.EMPTY);
+			chunkList.add(chunk);
+			LodServerWorld lodServerWorld = new LodServerWorld(chunk);
+			
+			ChunkGenerator chunkGen = serverWorld.getWorld().getChunkProvider().getChunkGenerator();
+			
+			// generate the terrain (this is thread safe)
+			ChunkStatus.EMPTY.doGenerationWork(serverWorld, chunkGen, serverWorld.getStructureTemplateManager(), (ServerWorldLightManager) serverWorld.getLightManager(), null, chunkList);
+			// override the chunk status so we can run the next generator stage
+			chunk.setStatus(ChunkStatus.STRUCTURE_REFERENCES);
+			ChunkStatus.BIOMES.doGenerationWork(serverWorld, chunkGen, serverWorld.getStructureTemplateManager(), (ServerWorldLightManager) serverWorld.getLightManager(), null, chunkList);
+			ChunkStatus.NOISE.doGenerationWork(serverWorld, chunkGen, serverWorld.getStructureTemplateManager(), (ServerWorldLightManager) serverWorld.getLightManager(), null, chunkList);
+			ChunkStatus.SURFACE.doGenerationWork(serverWorld, chunkGen, serverWorld.getStructureTemplateManager(), (ServerWorldLightManager) serverWorld.getLightManager(), null, chunkList);
+			
+			// this feature has proved to be thread safe
+			// so we will add it
+			IceAndSnowFeature snowFeature = new IceAndSnowFeature(NoFeatureConfig.field_236558_a_);
+			snowFeature.generate(lodServerWorld, chunkGen, serverWorld.rand, chunk.getPos().asBlockPos(), null);
+			
+			
+			LodChunk lod = lodBuilder.generateLodFromChunk(chunk, new LodBuilderConfig(false, true, true));
+			lodDim.addLod(lod);
+		}
+		
+		
+		/**
+		 * takes about 15 - 20 ms
+		 * 
+		 * Causes concurrentModification Exceptions,
+		 * which could cause instability or world generation bugs
+		 */
+		private void generateUsingFeatures()
+		{
+			List<IChunk> chunkList = new LinkedList<>();
+			ChunkPrimer chunk = new ChunkPrimer(pos, UpgradeData.EMPTY);
+			chunkList.add(chunk);
+			LodServerWorld lodServerWorld = new LodServerWorld(chunk);
+			
+			ChunkGenerator chunkGen = serverWorld.getWorld().getChunkProvider().getChunkGenerator();
+			
+			
+			// generate the terrain (this is thread safe)
+			ChunkStatus.EMPTY.doGenerationWork(serverWorld, chunkGen, serverWorld.getStructureTemplateManager(), (ServerWorldLightManager) serverWorld.getLightManager(), null, chunkList);
+			// override the chunk status so we can run the next generator stage
+			chunk.setStatus(ChunkStatus.STRUCTURE_REFERENCES);
+			ChunkStatus.BIOMES.doGenerationWork(serverWorld, chunkGen, serverWorld.getStructureTemplateManager(), (ServerWorldLightManager) serverWorld.getLightManager(), null, chunkList);
+			ChunkStatus.NOISE.doGenerationWork(serverWorld, chunkGen, serverWorld.getStructureTemplateManager(), (ServerWorldLightManager) serverWorld.getLightManager(), null, chunkList);
+			ChunkStatus.SURFACE.doGenerationWork(serverWorld, chunkGen, serverWorld.getStructureTemplateManager(), (ServerWorldLightManager) serverWorld.getLightManager(), null, chunkList);
+			
+			
+			// get all the biomes in the chunk
+			HashSet<Biome> biomes = new HashSet<>();
+			for (int x = 0; x < LodChunk.WIDTH; x++)
+			{
+				for (int z = 0; z < LodChunk.WIDTH; z++)
+				{
+					// should probably use the heightmap here instead of seaLevel,
+					// but this seems to get the job done well enough
+					biomes.add(chunk.getBiomes().getNoiseBiome(x, serverWorld.getSeaLevel(), z));
+				}
+			}
+			
+			
+			// generate all the features related to this chunk.
+			// this may or may not be thread safe
+			for (Biome biome : biomes)
+			{
+				List<List<Supplier<ConfiguredFeature<?, ?>>>> featuresForState = biome.biomeGenerationSettings.getFeatures();
+				
+				for(int featureStateToGenerate = 0; featureStateToGenerate < featuresForState.size(); featureStateToGenerate++)
+				{
+					for(Supplier<ConfiguredFeature<?, ?>> featureSupplier : featuresForState.get(featureStateToGenerate))
+					{
+						ConfiguredFeature<?, ?> configuredfeature = featureSupplier.get();
+						
+						/*
+						// clone any items that aren't thread safe to prevent
+						// them from causing issues
+						if(configuredfeature.config.getClass() == BlockClusterFeatureConfig.class)
+						{
+							config = cloneBlockClusterFeatureConfig((BlockClusterFeatureConfig) configuredfeature.config);
+						}
+						else if (configuredfeature.config.getClass() == DecoratedFeatureConfig.class)
+						{
+							config = cloneDecoratedFeatureConfig((DecoratedFeatureConfig) configuredfeature.config);
+						}
+						*/
+						
+						try
+						{
+							configuredfeature.generate(lodServerWorld, chunkGen, serverWorld.rand, chunk.getPos().asBlockPos());
+						}
+						catch(ConcurrentModificationException e)
+						{
+							// This will happen. I'm not sure what to do about it
+							// except pray that it doesn't effect the normal world generation
+							// in any harmful way
+							
+							// I tried cloning the config for each feature, but that
+							// path was blocked since I can't clone lambda methods.
+							// I tried using a deep cloning library and discovered
+							// the problem there.
+							// ( https://github.com/kostaskougios/cloning )
+						}
+						catch(UnsupportedOperationException e)
+						{
+							// This will happen when the LodServerWorld
+							// isn't able to return something that a feature
+							// generator needs
+						}
+						catch(Exception e)
+						{
+							// I'm not sure what happened, print to the log
+							
+							System.out.println();
+							System.out.println();
+							e.printStackTrace();
+							System.out.println();
+							//ClientProxy.LOGGER.error("error class: \"" + configuredfeature.config.getClass() + "\"");
+							System.out.println();
+						}
+					}
+				}
+			}
+			
+			// generate a Lod like normal
+			LodChunk lod = lodBuilder.generateLodFromChunk(chunk);
+			lodDim.addLod(lod);
+		}
+		
+		
+		/**
+		 * on pre generated chunks 0 - 1 ms
+		 * on un generated chunks 0 - 50 ms 
+		 * 	with the median seeming to hover around 15 - 30 ms
+		 * 	and outliers in the 100 - 200 ms range
+		 * 
+		 * Note this should not be multithreaded and does cause server/simulation lag
+		 * (Higher lag for generating than loading)
+		 */
+		private void generateWithServer()
+		{
+			lodBuilder.generateLodChunkAsync(serverWorld.getChunk(pos.x, pos.z, ChunkStatus.FEATURES), ClientProxy.getLodWorld(), serverWorld);
+		}
+		
+		
+		
+		
+		
+		
+		//================//
+		// Unused methods //
+		//================//
+		
+		// Sadly I wasn't able to get these to work,
+		// they are here for documentation purposes
+		
+		@SuppressWarnings({ "rawtypes", "unchecked", "unused" })
+		private DecoratedFeatureConfig cloneDecoratedFeatureConfig(DecoratedFeatureConfig config)
+		{
+			IPlacementConfig placementConfig = null;
+			
+			Class oldConfigClass = config.decorator.func_242877_b().getClass();
+			
+			if (oldConfigClass == FeatureSpreadConfig.class)
+			{
+				FeatureSpreadConfig oldPlacementConfig = (FeatureSpreadConfig) config.decorator.func_242877_b();
+				FeatureSpread oldSpread = oldPlacementConfig.func_242799_a();
+				
+				placementConfig = new FeatureSpreadConfig(oldSpread);
+			}
+			else if(oldConfigClass == DecoratedPlacementConfig.class)
+			{
+				DecoratedPlacementConfig oldPlacementConfig = (DecoratedPlacementConfig) config.decorator.func_242877_b();
+				placementConfig = new DecoratedPlacementConfig(oldPlacementConfig.getInner(), oldPlacementConfig.getOuter());
+			}
+			else if(oldConfigClass == NoiseDependant.class)
+			{
+				NoiseDependant oldPlacementConfig = (NoiseDependant) config.decorator.func_242877_b();
+				placementConfig = new NoiseDependant(oldPlacementConfig.noiseLevel, oldPlacementConfig.belowNoise, oldPlacementConfig.aboveNoise);
+			}
+			else
+			{
+//				ClientProxy.LOGGER.debug("unkown decorated placement config: \"" + config.decorator.func_242877_b().getClass() + "\"");
+				return config;
+			}
+			
+			
+			ConfiguredPlacement<?> newPlacement = new ConfiguredPlacement(config.decorator.decorator, placementConfig);
+			return new DecoratedFeatureConfig(config.feature, newPlacement);
+		}
+		
+		
+		@SuppressWarnings("unused")
+		private BlockClusterFeatureConfig cloneBlockClusterFeatureConfig(BlockClusterFeatureConfig config)
+		{
+			WeightedBlockStateProvider provider = new WeightedBlockStateProvider();
+			for(Entry<BlockState> state : ((WeightedBlockStateProvider) config.stateProvider).weightedStates.field_220658_a)
+				provider.weightedStates.field_220658_a.add(state);
+			
+			HashSet<Block> whitelist = new HashSet<>();
+			for(Block block : config.whitelist)
+				whitelist.add(block);
+			
+			HashSet<BlockState> blacklist = new HashSet<>();
+			for(BlockState state : config.blacklist)
+				blacklist.add(state); 
+			
+			
+			BlockClusterFeatureConfig.Builder builder = new BlockClusterFeatureConfig.Builder(provider, config.blockPlacer);
+			builder.whitelist(whitelist);
+			builder.blacklist(blacklist);
+			builder.xSpread(config.xSpread);
+			builder.ySpread(config.ySpread);
+			builder.zSpread(config.zSpread);
+			if(config.isReplaceable) { builder.replaceable(); }
+			if(config.requiresWater) { builder.requiresWater(); }
+			if(config.field_227298_k_) { builder.func_227317_b_(); }
+			builder.tries(config.tryCount);
+			
+			
+			return builder.build();
+		}
+		
+    }
+    
+    
+    /*
+     * performance/generation tests related to
+     * serverWorld.getChunk(x, z, ChunkStatus. *** )
+     
+     true/false is whether they generated blocks or not
+     the time is how long it took to generate
+     
+     ChunkStatus.EMPTY					0  - 1  ms	false	(empty, what did you expect? :P)
+     ChunkStatus.STRUCTURE_REFERENCES	1  - 2  ms  false	(no height, only generates some chunks)
+     ChunkStatus.BIOMES 				1  - 10 ms	false	(no height)
+     ChunkStatus.NOISE					4  - 15 ms	true	(all blocks are stone)
+     ChunkStatus.LIQUID_CARVERS			6  - 12 ms	true	(no snow/trees, just grass)
+     ChunkStatus.SURFACE				5  - 15 ms	true	(no snow/trees, just grass)
+     ChunkStatus.CARVERS				5  - 30 ms	true	(no snow/trees, just grass)
+     ChunkStatus.FEATURES				7  - 25 ms	true
+     ChunkStatus.HEIGHTMAPS 			20 - 40 ms	true
+     ChunkStatus.LIGHT					20 - 40 ms	true
+     ChunkStatus.FULL 					30 - 50 ms	true
+     ChunkStatus.SPAWN			   		50 - 80 ms	true
+     
+     
+     At this point I would suggest using FEATURES, as it generates snow and trees
+     (and any other object that is needed to make biomes distinct)
+     
+     Otherwise if snow/trees aren't necessary SURFACE is the next fastest (although not by much)
+     */
+}

src/main/java/com/seibel/lod/builders/worldGeneration/LodServerWorld.java

@@ -0,0 +1,281 @@
+package com.seibel.lod.builders.worldGeneration;
+
+import java.util.HashMap;
+import java.util.List;
+import java.util.Random;
+import java.util.function.Predicate;
+import java.util.stream.Stream;
+
+import com.seibel.lod.objects.LodChunk;
+
+import net.minecraft.block.Block;
+import net.minecraft.block.BlockState;
+import net.minecraft.entity.Entity;
+import net.minecraft.entity.player.PlayerEntity;
+import net.minecraft.fluid.Fluid;
+import net.minecraft.fluid.FluidState;
+import net.minecraft.particles.IParticleData;
+import net.minecraft.tileentity.TileEntity;
+import net.minecraft.util.Direction;
+import net.minecraft.util.SoundCategory;
+import net.minecraft.util.SoundEvent;
+import net.minecraft.util.math.AxisAlignedBB;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.util.math.SectionPos;
+import net.minecraft.util.registry.DynamicRegistries;
+import net.minecraft.world.DifficultyInstance;
+import net.minecraft.world.DimensionType;
+import net.minecraft.world.EmptyTickList;
+import net.minecraft.world.ISeedReader;
+import net.minecraft.world.ITickList;
+import net.minecraft.world.LightType;
+import net.minecraft.world.biome.Biome;
+import net.minecraft.world.biome.BiomeManager;
+import net.minecraft.world.border.WorldBorder;
+import net.minecraft.world.chunk.AbstractChunkProvider;
+import net.minecraft.world.chunk.ChunkStatus;
+import net.minecraft.world.chunk.IChunk;
+import net.minecraft.world.gen.Heightmap;
+import net.minecraft.world.gen.Heightmap.Type;
+import net.minecraft.world.gen.feature.structure.Structure;
+import net.minecraft.world.gen.feature.structure.StructureStart;
+import net.minecraft.world.lighting.WorldLightManager;
+import net.minecraft.world.server.ServerWorld;
+import net.minecraft.world.storage.IWorldInfo;
+
+
+/**
+ * This is a fake ServerWorld used when generating features.
+ * This allows us to keep each LodChunk generation independent
+ * of the actual ServerWorld, allowing us
+ * to multithread generation.
+ * 
+ * @author James Seibel
+ * @version 6-27-2021
+ */
+public class LodServerWorld implements ISeedReader {
+	
+	public HashMap<Heightmap.Type, Heightmap> heightmaps = new HashMap<>();
+	
+	public IChunk chunk;
+	
+	public LodServerWorld(IChunk newChunk)
+	{
+		chunk = newChunk;
+	}
+	
+	
+	
+	@Override
+	public int getHeight(Type heightmapType, int x, int z)
+	{
+		// make sure the block position is set relative to the chunk
+		x = x % LodChunk.WIDTH;
+		x = (x < 0) ? x + 16 : x;
+		
+		z = z % LodChunk.WIDTH;
+		z = (z < 0) ? z + 16 : z;
+		
+		return chunk.getHeightmap(LodChunk.DEFAULT_HEIGHTMAP).getHeight(x, z);
+	}
+	
+	@Override
+	public Biome getBiome(BlockPos pos)
+	{
+		return chunk.getBiomes().getNoiseBiome(pos.getX(), pos.getY(), pos.getZ());
+	}
+	
+	@Override
+	public boolean setBlockState(BlockPos pos, BlockState state, int flags, int recursionLeft)
+	{
+		return chunk.setBlockState(pos, state, false) == state;
+	}
+	
+	@Override
+	public BlockState getBlockState(BlockPos pos)
+	{
+		return chunk.getBlockState(pos);
+	}
+	
+	@Override
+	public FluidState getFluidState(BlockPos pos)
+	{
+		return chunk.getFluidState(pos);
+	}
+	
+	@Override
+	public int getLightFor(LightType type, BlockPos pos)
+	{
+		// this needs to be low for snow generation to work
+		return 0;
+	}
+	
+	@Override
+	public boolean hasBlockState(BlockPos pos, Predicate<BlockState> state)
+	{
+		return state.test(chunk.getBlockState(pos));
+	}
+	
+	@Override
+	public ITickList<Block> getPendingBlockTicks()
+	{
+		return EmptyTickList.get();
+	}
+	
+	@Override
+	public IChunk getChunk(int x, int z, ChunkStatus requiredStatus, boolean nonnull) {
+		return chunk;
+	}
+	
+	
+	
+	
+	/**
+	 * 
+	 * All methods below shouldn't be needed
+	 * and thus have been left unimplemented. 
+	 * 
+	 */
+	
+	
+	
+	@Override
+	public ServerWorld getWorld() {
+		throw new UnsupportedOperationException("Not Implemented");
+	}
+	
+	@Override
+	public ITickList<Fluid> getPendingFluidTicks() {
+		throw new UnsupportedOperationException("Not Implemented");
+	}
+	
+	@Override
+	public IWorldInfo getWorldInfo() {
+		throw new UnsupportedOperationException("Not Implemented");
+	}
+	
+	@Override
+	public DifficultyInstance getDifficultyForLocation(BlockPos pos) {
+		throw new UnsupportedOperationException("Not Implemented");
+	}
+	
+	@Override
+	public AbstractChunkProvider getChunkProvider() {
+		throw new UnsupportedOperationException("Not Implemented");
+	}
+	
+	@Override
+	public Random getRandom() {
+		throw new UnsupportedOperationException("Not Implemented");
+	}
+	
+	@Override
+	public void playSound(PlayerEntity player, BlockPos pos, SoundEvent soundIn, SoundCategory category, float volume,
+			float pitch) {
+		throw new UnsupportedOperationException("Not Implemented");
+	}
+	
+	@Override
+	public void addParticle(IParticleData particleData, double x, double y, double z, double xSpeed, double ySpeed,
+			double zSpeed) {
+		throw new UnsupportedOperationException("Not Implemented");
+	}
+	
+	@Override
+	public void playEvent(PlayerEntity player, int type, BlockPos pos, int data) {
+		throw new UnsupportedOperationException("Not Implemented");
+	}
+	
+	@Override
+	public DynamicRegistries func_241828_r() {
+		throw new UnsupportedOperationException("Not Implemented");
+	}
+	
+	@Override
+	public List<Entity> getEntitiesInAABBexcluding(Entity entityIn, AxisAlignedBB boundingBox,
+			Predicate<? super Entity> predicate) {
+		throw new UnsupportedOperationException("Not Implemented");
+	}
+	
+	@Override
+	public <T extends Entity> List<T> getEntitiesWithinAABB(Class<? extends T> clazz, AxisAlignedBB aabb,
+			Predicate<? super T> filter) {
+		throw new UnsupportedOperationException("Not Implemented");
+	}
+	
+	@Override
+	public List<? extends PlayerEntity> getPlayers() {
+		throw new UnsupportedOperationException("Not Implemented");
+	}
+	
+	@Override
+	public int getSkylightSubtracted() {
+		throw new UnsupportedOperationException("Not Implemented");
+	}
+	
+	@Override
+	public BiomeManager getBiomeManager() {
+		throw new UnsupportedOperationException("Not Implemented");
+	}
+	
+	@Override
+	public Biome getNoiseBiomeRaw(int x, int y, int z) {
+		throw new UnsupportedOperationException("Not Implemented");
+	}
+	
+	@Override
+	public boolean isRemote() {
+		throw new UnsupportedOperationException("Not Implemented");
+	}
+	
+	@Override
+	public int getSeaLevel() {
+		throw new UnsupportedOperationException("Not Implemented");
+	}
+	
+	@Override
+	public DimensionType getDimensionType() {
+		throw new UnsupportedOperationException("Not Implemented");
+	}
+	
+	@Override
+	public float func_230487_a_(Direction p_230487_1_, boolean p_230487_2_) {
+		throw new UnsupportedOperationException("Not Implemented");
+	}
+	
+	@Override
+	public WorldLightManager getLightManager() {
+		throw new UnsupportedOperationException("Not Implemented");
+	}
+	
+	@Override
+	public TileEntity getTileEntity(BlockPos pos) {
+		throw new UnsupportedOperationException("Not Implemented");
+	}
+	
+	@Override
+	public WorldBorder getWorldBorder() {
+		throw new UnsupportedOperationException("Not Implemented");
+	}
+	
+	@Override
+	public boolean removeBlock(BlockPos pos, boolean isMoving) {
+		throw new UnsupportedOperationException("Not Implemented");
+	}
+	
+	@Override
+	public boolean destroyBlock(BlockPos pos, boolean dropBlock, Entity entity, int recursionLeft) {
+		throw new UnsupportedOperationException("Not Implemented");
+	}
+	
+	@Override
+	public long getSeed() {
+		throw new UnsupportedOperationException("Not Implemented");
+	}
+	
+	@Override
+	public Stream<? extends StructureStart<?>> func_241827_a(SectionPos p_241827_1_, Structure<?> p_241827_2_) {
+		throw new UnsupportedOperationException("Not Implemented");
+	}
+	
+}

src/main/java/com/seibel/lod/enums/DistanceGenerationMode.java

@@ -0,0 +1,51 @@
+package com.seibel.lod.enums;
+
+/**
+ * BIOME_ONLY <br>
+ * BIOME_ONLY_SIMULATE_HEIGHT <br>
+ * SURFACE <br>
+ * FEATURES <br>
+ * SERVER <br><br>
+ * 
+ * In order of fastest to slowest.
+ * 
+ * @author James Seibel
+ * @version 6-27-2021
+ */
+public enum DistanceGenerationMode
+{
+	/** Only generate the biomes and use biome
+	 * grass/foliage color, water color, or ice color
+	 * to generate the color.
+	 * Doesn't generate height, everything is shown at sea level. 
+	 * Multithreaded - Fastest (2-5 ms) */
+	BIOME_ONLY,
+	
+	/**
+	 * Same as BIOME_ONLY, except instead
+	 * of always using sea level as the LOD height
+	 * different biome types (mountain, ocean, forest, etc.)
+	 * use predetermined heights to simulate having height data.
+	 */
+	BIOME_ONLY_SIMULATE_HEIGHT,
+	
+	/** Generate the world surface, 
+	 * this does NOT include caves, trees,
+	 * or structures. 
+	 * Multithreaded - Faster (10-20 ms) */
+	SURFACE,
+	
+	/** Generate everything except structures. 
+	 * NOTE: This may cause world generation bugs or instability,
+	 * since some features cause concurrentModification exceptions.
+	 * Multithreaded - Fast (15-20 ms) */
+	FEATURES,
+	
+	/** Ask the server to generate/load each chunk.
+	 * This is the most compatible, but causes server/simulation lag.
+	 * This will also show player made structures if you
+	 * are adding the mod to a pre-existing world. 
+	 * Singlethreaded - Slow (15-50 ms, with spikes up to 200 ms) */
+	SERVER;
+	
+}

src/main/java/com/seibel/lod/enums/LodColorStyle.java

@@ -1,18 +0,0 @@
-package com.seibel.lod.enums;
-
-/**
- * top, individual_sides
- * 
- * @author James Seibel
- * @version 05-08-2021
- */
-public enum LodColorStyle
-{
-	/** Use the color from the top of the LOD chunk 
-	 * for all sides */
-	TOP,
-	
-	/** For each side of the LOD use the color corresponding
-	 * to that side */
-	INDIVIDUAL_SIDES;
-}

src/main/java/com/seibel/lod/enums/LodDetail.java

@@ -1,10 +1,13 @@
 package com.seibel.lod.enums;
 
+import com.seibel.lod.objects.LodChunk;
+import com.seibel.lod.objects.LodDataPoint;
+
 /**
- * single, quad
+ * single, double, quad, half, full
  * 
  * @author James Seibel
- * @version 05-29-2021
+ * @version 06-13-2021
  */
 public enum LodDetail
 {
@@ -12,14 +15,83 @@ public enum LodDetail
 	SINGLE(1),
 	
 	/** render 4 LODs for each chunk */
-	DOUBLE(2);
+	DOUBLE(2),
 	
-	/** How many data points wide the related
-	 * LodChunk object should contain */
-	public final int value;
+	/** render 16 LODs for each chunk */
+	QUAD(4),
 	
-	private LodDetail(int newValue)
+	/** render 64 LODs for each chunk */
+	HALF(8),
+	
+	/** render 256 LODs for each chunk */
+	FULL(16);
+	
+	
+	/** How many DataPoints should 
+	 * be drawn per side per LodChunk */
+	public final int dataPointLengthCount;
+	/** How wide each LOD DataPoint is */
+	public final int dataPointWidth;
+	
+	/* Start/End X/Z give the block positions
+	 * for each individual dataPoint in a LodChunk */
+	public final int[] startX;
+	public final int[] startZ;
+	
+	public final int[] endX;
+	public final int[] endZ;
+	
+	/** This is how many pieces of data should be expected
+	 * when creating a LodChunk with this detail level */
+	public final int lodChunkStringDelimiterCount;
+	
+	
+	
+	
+	private LodDetail(int newLengthCount)
 	{
-		value = newValue;
-	}
+		dataPointLengthCount = newLengthCount;
+		dataPointWidth = 16 / dataPointLengthCount;
+		
+		if(newLengthCount == LodChunk.WIDTH)
+		{
+			// this is to prevent overflow
+			newLengthCount = LodChunk.WIDTH - 1;
+		}
+		
+		startX = new int[dataPointLengthCount * dataPointLengthCount];
+		endX = new int[dataPointLengthCount * dataPointLengthCount];
+		
+		startZ = new int[dataPointLengthCount * dataPointLengthCount];
+		endZ = new int[dataPointLengthCount * dataPointLengthCount];
+		
+		
+		int index = 0;
+		for(int x = 0; x < newLengthCount; x++)
+		{
+			for(int z = 0; z < newLengthCount; z++)
+			{
+				startX[index] = x * dataPointWidth;
+				startZ[index] = z * dataPointWidth;
+				
+				// special case for FULL
+				if(dataPointWidth != 1)
+				{
+					endX[index] = (x*dataPointWidth) + dataPointWidth - 1; 
+					endZ[index] = (z*dataPointWidth) + dataPointWidth - 1; 
+				}
+				else
+				{
+					endX[index] = (x*dataPointWidth) + dataPointWidth;
+					endZ[index] = (z*dataPointWidth) + dataPointWidth;
+				}
+				
+				index++;
+			}
+		}
+		
+		
+		lodChunkStringDelimiterCount = 2 + (dataPointLengthCount * dataPointLengthCount * LodDataPoint.NUMBER_OF_DELIMITERS);
+		
+	}// constructor
 }

src/main/java/com/seibel/lod/enums/LodTemplate.java

@@ -9,7 +9,7 @@ import com.seibel.lod.builders.lodTemplates.TriangularLodTemplate;
  * Cubic, Triangular, Dynamic
  * 
  * @author James Seibel
- * @version 05-07-2021
+ * @version 06-16-2021
  */
 public enum LodTemplate
 {
@@ -35,4 +35,10 @@ public enum LodTemplate
 	{
 		template = newTemplate;
 	}
+	
+	
+	public int getBufferMemoryForSingleLod(LodDetail detail)
+	{
+		return template.getBufferMemoryForSingleLod(detail);
+	}
 }

src/main/java/com/seibel/lod/handlers/LodConfig.java

@@ -1,4 +1,4 @@
-package com.seibel.lod.util;
+package com.seibel.lod.handlers;
 
 import java.nio.file.Path;
 import java.nio.file.Paths;
@@ -9,8 +9,8 @@ import org.apache.logging.log4j.LogManager;
 import com.electronwill.nightconfig.core.file.CommentedFileConfig;
 import com.electronwill.nightconfig.core.io.WritingMode;
 import com.seibel.lod.ModInfo;
+import com.seibel.lod.enums.DistanceGenerationMode;
 import com.seibel.lod.enums.FogDistance;
-import com.seibel.lod.enums.LodColorStyle;
 import com.seibel.lod.enums.LodDetail;
 import com.seibel.lod.enums.LodTemplate;
 
@@ -22,7 +22,7 @@ import net.minecraftforge.fml.config.ModConfig;
 /**
  * 
  * @author James Seibel
- * @version 05-31-2021
+ * @version 6-27-2021
  */
 @Mod.EventBusSubscriber
 public class LodConfig
@@ -39,7 +39,7 @@ public class LodConfig
 		
 		public ForgeConfigSpec.EnumValue<LodDetail> lodDetail;
 		
-		public ForgeConfigSpec.EnumValue<LodColorStyle> lodColorStyle;
+		public ForgeConfigSpec.EnumValue<DistanceGenerationMode> distanceGenerationMode;
 		
 		/** this is multiplied by the default view distance
 		 * to determine how far out to generate/render LODs */
@@ -50,21 +50,21 @@ public class LodConfig
 	        builder.comment(ModInfo.MODNAME + " configuration settings").push("client");
 	        
 	        drawLODs = builder
-	        		.comment("\n"
+	        		.comment("\n\n"
 	        				+ " If false LODs will not be drawn, \n"
 	        				+ " however they will still be generated \n"
 	        				+ " and saved to file for later use.")
 	        		.define("drawLODs", true);
 	        
 	        fogDistance = builder
-	                .comment("\n"
+	                .comment("\n\n"
 	                		+ " At what distance should Fog be drawn on the LODs? \n"
 	                		+ " If the fog cuts off ubruptly or you are using Optifine's \"fast\" \n"
 	                		+ " fog option set this to " + FogDistance.NEAR.toString() + " or " + FogDistance.FAR.toString() + ".")
 	                .defineEnum("fogDistance", FogDistance.NEAR_AND_FAR);
 	        
 	        debugMode = builder
-	                .comment("\n"
+	                .comment("\n\n"
 	                		+ " If false the LODs will draw with their normal world colors. \n"
 	                		+ " If true they will draw as a black and white checkerboard. \n"
 	                		+ " This can be used for debugging or imagining you are playing a \n"
@@ -72,35 +72,73 @@ public class LodConfig
 	                .define("drawCheckerBoard", false);
 	        
 	        lodTemplate = builder
-	                .comment("\n"
+	                .comment("\n\n"
 	                		+ " How should the LODs be drawn? \n"
 	                		+ " " + LodTemplate.CUBIC.toString() + ": LOD Chunks are drawn as rectangular prisms (boxes). \n"
 	                		+ " " + LodTemplate.TRIANGULAR.toString() + ": LOD Chunks smoothly transition between other. \n"
-	                		+ " " + LodTemplate.DYNAMIC.toString() + ": LOD Chunks smoothly transition between other, "
+	                		+ " " + LodTemplate.DYNAMIC.toString() + ": LOD Chunks smoothly transition between other, \n"
 	                		+ " " + "         unless a neighboring chunk is at a significantly different height. ")
 	                .defineEnum("lodTemplate", LodTemplate.CUBIC);
 	        
 	        lodDetail = builder
-	                .comment("\n"
+	                .comment("\n\n"
 	                		+ " How detailed should the LODs be? \n"
 	                		+ " " + LodDetail.SINGLE.toString() + ": render 1 LOD for each Chunk. \n"
             				+ " " + LodDetail.DOUBLE.toString() + ": render 4 LODs for each Chunk.")
-	                .defineEnum("lodGeometryQuality", LodDetail.SINGLE);
-	        
-	        lodColorStyle = builder
-	                .comment("\n"
-	                		+ " How should the LODs be colored? \n"
-	                		+ " " + LodColorStyle.TOP.toString() + ": Use the color from the top of the LOD chunk for all sides. \n"
-	                		+ " " + LodColorStyle.INDIVIDUAL_SIDES.toString() + ": For each side of the LOD use the color corresponding to that side. ")
-	                .defineEnum("lodColorStyle", LodColorStyle.TOP);
+	                .defineEnum("lodGeometryQuality", LodDetail.QUAD);
 	        
 	        lodChunkRadiusMultiplier = builder
-	                .comment("\n"
+	                .comment("\n\n"
 	                		+ " This is multiplied by the default view distance \n"
 	                		+ " to determine how far out to generate/render LODs. \n"
 	                		+ " A value of 2 means that there is 1 render distance worth \n"
-	                		+ " of LODs in each cardinal direction.")
-	                .defineInRange("lodChunkRadiusMultiplier", 6, 2, 1023);
+	                		+ " of LODs in each cardinal direction. ")
+	                .defineInRange("lodChunkRadiusMultiplier", 6, 2, 32);
+	        
+	        distanceGenerationMode = builder
+	                .comment("\n\n"
+	                		+ " Note: The times listed here are based on the developer's \n"
+	                		+ "       PC, and are included to show the speed difference \n"
+	                		+ "       between options. Your mileage may vary. \n"
+	                		+ "\n"
+	                		
+	                		+ " " + DistanceGenerationMode.BIOME_ONLY.toString() + " \n"
+	                		+ " Only generate the biomes and use biome \n"
+	                		+ " grass/foliage color, water color, or ice color \n"
+	                		+ " to generate the color. \n"
+	                		+ " Doesn't generate height, everything is shown at sea level. \n"
+	                		+ " Multithreaded - Fastest (2-5 ms) \n"
+	                		
+	                		+ "\n"
+							+ " " + DistanceGenerationMode.BIOME_ONLY_SIMULATE_HEIGHT.toString() + " \n"
+							+ " Same as BIOME_ONLY, except instead \n"
+							+ " of always using sea level as the LOD height \n"
+							+ " different biome types (mountain, ocean, forest, etc.) \n"
+							+ " use predetermined heights to simulate having height data. \n"
+							+ " Multithreaded - Fastest (2-5 ms) \n"
+							
+							+ "\n"
+							+ " " + DistanceGenerationMode.SURFACE.toString() + " \n"
+							+ " Generate the world surface, \n"
+							+ " this does NOT include caves, trees, \n"
+							+ " or structures. \n"
+							+ " Multithreaded - Faster (10-20 ms) \n"
+							
+							+ "\n"
+							+ " " + DistanceGenerationMode.FEATURES.toString() + " \n"
+							+ " Generate everything except structures. \n"
+							+ " WARNING: This may cause world generation bugs or instability, \n"
+							+ "	since some features cause concurrentModification exceptions. \n"
+							+ " Multithreaded - Fast (15-20 ms) \n"
+							
+							+ "\n"
+							+ " " + DistanceGenerationMode.SERVER.toString() + " \n"
+							+ " Ask the server to generate/load each chunk. \n"
+							+ " This is the most compatible, but causes server/simulation lag. \n"
+							+ " This will also show player made structures if you \n"
+							+ " are adding the mod to a pre-existing world. \n"
+							+ " Singlethreaded - Slow (15-50 ms, with spikes up to 200 ms) \n")
+	                .defineEnum("distanceBiomeOnlyGeneration", DistanceGenerationMode.FEATURES);
 	        
 	        builder.pop();
 	    }

src/main/java/com/seibel/lod/handlers/LodDimensionFileHandler.java

@@ -8,6 +8,7 @@ import java.io.IOException;
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
 
+import com.seibel.lod.enums.LodDetail;
 import com.seibel.lod.objects.LodChunk;
 import com.seibel.lod.objects.LodDimension;
 import com.seibel.lod.objects.LodRegion;
@@ -19,22 +20,29 @@ import com.seibel.lod.proxy.ClientProxy;
  * to file.
  * 
  * @author James Seibel
- * @version 05-31-2021
+ * @version 6-27-2021
  */
 public class LodDimensionFileHandler
 {
+	/** This is what separates each piece of data */
+	public static final char DATA_DELIMITER = ',';
+	
+	
 	private LodDimension loadedDimension = null;
 	public long regionLastWriteTime[][];
 	
 	private File dimensionDataSaveFolder;
 	
+	/** lod */
 	private final String FILE_NAME_PREFIX = "lod";
+	/** .txt */
 	private final String FILE_EXTENSION = ".txt";
 	
 	/** This is the file version currently accepted by this
 	 * file handler, older versions (smaller numbers) will be deleted and overwritten,
 	 * newer versions (larger numbers) will be ignored and won't be read. */
-	public static final int LOD_SAVE_FILE_VERSION = 1;
+	public static final int LOD_SAVE_FILE_VERSION = 2;
+	
 	/** This is the string written before the file version */
 	private static final String LOD_FILE_VERSION_PREFIX = "lod_save_file_version";
 	
@@ -74,7 +82,8 @@ public class LodDimensionFileHandler
 	 */
 	public LodRegion loadRegionFromFile(int regionX, int regionZ)
 	{
-		String fileName = getFileNameAndPathForRegion(regionX, regionZ);
+		
+		String fileName = getFileNameAndPathForRegion(regionX, regionZ, LodConfig.CLIENT.lodDetail.get());
 		
 		File f = new File(fileName);
 		
@@ -149,7 +158,7 @@ public class LodDimensionFileHandler
 				try
 				{
 					// convert each line into an LOD object and add it to the region
-					LodChunk lod = new LodChunk(s);
+					LodChunk lod = new LodChunk(s, LodConfig.CLIENT.lodDetail.get());
 					
 					region.addLod(lod);
 				}
@@ -225,7 +234,7 @@ public class LodDimensionFileHandler
 		int x = region.x;
 		int z = region.z;
 		
-		File f = new File(getFileNameAndPathForRegion(x, z));
+		File f = new File(getFileNameAndPathForRegion(x, z, LodConfig.CLIENT.lodDetail.get()));
 		
 		try
 		{
@@ -311,9 +320,11 @@ public class LodDimensionFileHandler
 	/**
 	 * Return the name of the file that should contain the 
 	 * region at the given x and z. <br>
-	 * Returns null if this object isn't ready to read and write.
+	 * Returns null if this object isn't ready to read and write. <br><br>
+	 * 
+	 * example: "lod.FULL.0.0.txt"
 	 */
-	private String getFileNameAndPathForRegion(int regionX, int regionZ)
+	private String getFileNameAndPathForRegion(int regionX, int regionZ, LodDetail detail)
 	{
 		try
 		{
@@ -321,8 +332,8 @@ public class LodDimensionFileHandler
 			// ".\Super Flat\DIM-1\data"
 			// or
 			// ".\Super Flat\data"
-			return dimensionDataSaveFolder.getCanonicalPath() + "\\" +
-					FILE_NAME_PREFIX + "." + regionX + "." + regionZ + FILE_EXTENSION;
+			return dimensionDataSaveFolder.getCanonicalPath() + File.separatorChar + 
+					FILE_NAME_PREFIX + "." + detail.toString() + "." + regionX + "." + regionZ + FILE_EXTENSION;
 		}
 		catch(IOException e)
 		{

src/main/java/com/seibel/lod/mixin/MixinWorldRenderer.java

@@ -7,7 +7,7 @@ import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
 
 import com.mojang.blaze3d.matrix.MatrixStack;
 import com.seibel.lod.LodMain;
-import com.seibel.lod.util.LodConfig;
+import com.seibel.lod.handlers.LodConfig;
 
 import net.minecraft.client.renderer.RenderType;
 import net.minecraft.client.renderer.WorldRenderer;

src/main/java/com/seibel/lod/objects/LodChunk.java

@@ -2,30 +2,44 @@ package com.seibel.lod.objects;
 
 import java.awt.Color;
 
-import com.seibel.lod.enums.ColorDirection;
+import com.seibel.lod.enums.LodDetail;
+import com.seibel.lod.handlers.LodDimensionFileHandler;
 
 import net.minecraft.util.math.ChunkPos;
+import net.minecraft.world.gen.Heightmap;
 
 /**
  * This object contains position
  * and color data for an LOD object.
  * 
  * @author James Seibel
- * @version 05-29-2021
+ * @version 6-27-2021
  */
 public class LodChunk
 {
-	/** how many different pieces of data are in one line */
-	private static final int DATA_DELIMITER_COUNT = 22;
-
 	/** This is what separates each piece of data in the toData method */
-	public static final char DATA_DELIMITER = ',';
+	private static final char DATA_DELIMITER = LodDimensionFileHandler.DATA_DELIMITER;
 	
 	/** Width of a Minecraft Chunk */
 	public static final int WIDTH = 16;
 	
+	/** alpha used when drawing chunks in debug mode */
+	private static final int DEBUG_ALPHA = 255; // 0 - 255
+	private static final Color DEBUG_BLACK = new Color(0, 0, 0, DEBUG_ALPHA);
+	private static final Color DEBUG_WHITE = new Color(255, 255, 255, DEBUG_ALPHA);
 	private static final Color INVISIBLE = new Color(0,0,0,0);
 	
+	/** If we ever have to use a heightmap for any reason, use this one. */
+	public static final Heightmap.Type DEFAULT_HEIGHTMAP = Heightmap.Type.WORLD_SURFACE_WG;
+	
+	
+	public LodDetail detail = LodDetail.SINGLE;
+	
+	/** If this is set to true then toData will return
+	 * the empty string */
+	public boolean dontSave = false;
+	
+	// TODO store the DistanceGenerationMethod used for this chunk (so we can upgrade old chunks if we want to)
 	
 	
 	/** The x coordinate of the chunk. */
@@ -33,47 +47,50 @@ public class LodChunk
 	/** The z coordinate of the chunk. */
 	public int z = 0;
 	
-	/*
-	 * The reason we are only using 1 height and depth point
-	 * instead of multiple is because:
-	 * 1. more points would drastically increase the amount of
-	 * 		memory and disk space needed
-	 * 2. more height/depth points require more color points,
-	 * 		which can get out of hand quickly
-	 * 3. with the increased disk space reading/writing would
-	 * 		take far too long
-	 * 4. the increased resolution is generally not worth it,
-	 * 		4 LODs per chunk is the limit of diminishing returns.
-	 * 		And some of that could potentially be faked through 
-	 * 		smart LodTemplates
-	 */
-	private short height;
-	private short depth;
 	
-	/** The average color for the 6 cardinal directions */
-	public Color colors[];
+	/** This stores the height and color for each data point in the LodChunk */
+	public LodDataPoint dataPoints[][];
 	
 	/** If true then this LodChunk contains no data */
 	private boolean empty = false;
 	
 	
 	/**
-	 * Create an empty invisible LodChunk at (0,0)
+	 * Create an empty, invisible, non-saving LodChunk at (0,0)
 	 */
 	public LodChunk()
 	{
+		dontSave = true;
 		empty = true;
 		
 		x = 0;
 		z = 0;
 		
-		height = 0;
-		depth = 0;
-		colors = new Color[ColorDirection.values().length];
+		detail = LodDetail.SINGLE;
 		
-		// by default have the colors invisible
-		for(ColorDirection dir : ColorDirection.values())
-			colors[dir.value] = INVISIBLE;
+		dataPoints = new LodDataPoint[detail.dataPointLengthCount][detail.dataPointLengthCount];
+	}
+	
+	/**
+	 * Create an empty, invisible, non-saving LodChunk at the given ChunkPos
+	 */
+	public LodChunk(ChunkPos pos)
+	{
+		this();
+		
+		x = pos.x;
+		z = pos.z;
+	}
+	
+	/**
+	 * Create an empty, invisible, non-saving LodChunk at the given ChunkPos
+	 */
+	public LodChunk(int newX, int newZ)
+	{
+		this();
+		
+		x = newX;
+		z = newZ;
 	}
 	
 	
@@ -84,28 +101,33 @@ public class LodChunk
 	 * @throws IllegalArgumentException if the data isn't valid to create a LodChunk
 	 * @throws NumberFormatException if any piece of data can't be converted at any point
 	 */
-	public LodChunk(String data) throws IllegalArgumentException, NumberFormatException
+	public LodChunk(String data, LodDetail newDetail) throws IllegalArgumentException, NumberFormatException
 	{
 		/*
-		 * data format:
-		 * x, z, height, depth, rgb color data
+		 * data format: 
+		 * x, z, dataPoint[0][0], dataPoint[0][1], ... 
+		 * x, z,  height, depth, rgb color data,  height, depth, rgb....
 		 * 
 		 * example:
-		 * 5,8, 4, 0, 255,255,255, 255,255,255, 255,255,255, 255,255,255, 255,255,255, 255,255,255,
+		 * 5,8,  4, 0, 255,255,255,  4, 0, 255, 255, 255, ...
 		 */
 		
+		dontSave = false;
+		
 		// make sure there are the correct number of entries
-		// in the data string (28)
+		// in the data string
 		int count = 0;
+		detail = newDetail;
 		
 		for(int i = 0; i < data.length(); i++)
 			if(data.charAt(i) == DATA_DELIMITER)
 				count++;
 		
-		if(count != DATA_DELIMITER_COUNT)
-			throw new IllegalArgumentException("LodChunk constructor givin an invalid string. The data given had " + count + " delimiters when it should have had " + DATA_DELIMITER_COUNT + ".");
+		if(count != detail.lodChunkStringDelimiterCount)
+			throw new IllegalArgumentException("LodChunk constructor givin an invalid string. The data given had " + count + " delimiters when it should have had " + detail.lodChunkStringDelimiterCount + ".");
 		
 		
+		dataPoints = new LodDataPoint[detail.dataPointLengthCount][detail.dataPointLengthCount];
 		
 		// index we will use when going through the String
 		int index = 0;
@@ -115,76 +137,78 @@ public class LodChunk
 		
 		// x and z position
 		index = data.indexOf(DATA_DELIMITER, 0);
-		x = Integer.parseInt(data.substring(0,index));
+		this.x = Integer.parseInt(data.substring(0,index));
 		
 		lastIndex = index;
 		index = data.indexOf(DATA_DELIMITER, lastIndex+1);
-		z = Integer.parseInt(data.substring(lastIndex+1,index));
-		
-		// height
-		lastIndex = index;
-		index = data.indexOf(DATA_DELIMITER, lastIndex+1);
-		height = Short.parseShort(data.substring(lastIndex+1,index));
-		
-		// depth
-		lastIndex = index;
-		index = data.indexOf(DATA_DELIMITER, lastIndex+1);
-		depth = Short.parseShort(data.substring(lastIndex+1,index));
+		this.z = Integer.parseInt(data.substring(lastIndex+1,index));
 		
 		
-		
-		// color
-		colors = new Color[6];
-		for(ColorDirection dir : ColorDirection.values())
+		// LodDataPoints
+		for(int blockX = 0; blockX < detail.dataPointLengthCount; blockX++)
 		{
-			int red = 0;
-			int green = 0;
-			int blue = 0;
-			
-			// get r,g,b
-			for(int i = 0; i < 3; i++)
+			for(int blockZ = 0; blockZ < detail.dataPointLengthCount; blockZ++)
 			{
+				// height
 				lastIndex = index;
-				index = data.indexOf(DATA_DELIMITER, lastIndex + 1);
+				index = data.indexOf(DATA_DELIMITER, lastIndex+1);
+				int height = Short.parseShort(data.substring(lastIndex+1,index));
 				
-				String raw = "";
-				switch(i)
+				// depth
+				lastIndex = index;
+				index = data.indexOf(DATA_DELIMITER, lastIndex+1);
+				int depth = Short.parseShort(data.substring(lastIndex+1,index));
+				
+				
+				// color
+				int red = 0;
+				int green = 0;
+				int blue = 0;
+				
+				// get r,g,b
+				for(int i = 0; i < 3; i++)
 				{
-				case 0:
-					raw = data.substring(lastIndex+1,index);
-					red = Short.parseShort(raw);
-					break;
-				case 1:
-					raw = data.substring(lastIndex+1,index);
-					green = Short.parseShort(raw);
-					break;
-				case 2:
-					raw = data.substring(lastIndex+1,index);
-					blue = Short.parseShort(raw);
-					break;
+					lastIndex = index;
+					index = data.indexOf(DATA_DELIMITER, lastIndex + 1);
+					
+					String raw = "";
+					switch(i)
+					{
+					case 0:
+						raw = data.substring(lastIndex+1,index);
+						red = Short.parseShort(raw);
+						break;
+					case 1:
+						raw = data.substring(lastIndex+1,index);
+						green = Short.parseShort(raw);
+						break;
+					case 2:
+						raw = data.substring(lastIndex+1,index);
+						blue = Short.parseShort(raw);
+						break;
+					}
 				}
+				
+				dataPoints[blockX][blockZ] = new LodDataPoint((short)height, (short)depth, new Color(red, green, blue));
 			}
-			
-			colors[dir.value] = new Color(red, green, blue);
 		}
 		
 		
-		// after going through all this
-		// is this LOD empty?
 		empty = determineIfEmtpy();
 	}
 	
 	/**
 	 * Create a LodChunk from the given values.
 	 */
-	public LodChunk(ChunkPos pos, short newHeight, short newDepth, Color[] newColors)
+	public LodChunk(ChunkPos pos, LodDataPoint[][] newDataPoints, LodDetail newDetail)
 	{
 		x = pos.x;
 		z = pos.z;
 		
-		height = newHeight;
-		depth = newDepth;
-		colors = newColors;
+		dataPoints = newDataPoints;
+		
+		dontSave = false;
+		detail = newDetail;
 		
 		empty = determineIfEmtpy();
 	}
@@ -217,27 +241,32 @@ public class LodChunk
 	 */
 	private boolean determineIfEmtpy()
 	{
-		// we don't check the depth since the
-		// height should always be greater than or equal
-		// to the depth
-		if(height >= 0)
+		for(LodDataPoint[] dataPointArray : dataPoints)
 		{
-			// the height is valid,
-			// do we have at least 1 non-invisible color?
-			
-			for(ColorDirection dir : ColorDirection.values())
-				if(!colors[dir.value].equals(INVISIBLE))
-					// at least one direction has a non-invisible color
+			for(LodDataPoint dataPoint : dataPointArray)
+			{
+				if (dataPoint == null)
+					continue;
+				
+				// we don't check the depth since the
+				// height should always be greater than or equal
+				// to the depth
+				if(dataPoint.height >= 0)
+				{
+					// the height is valid,
+					
+					if (dataPoint.color == INVISIBLE)
+						continue;
+					
+					// the color and height are valid
+					// this LodChunk isn't empty
 					return false;
-			
-			return true;
-		}
-		else
-		{
-			// the height is negative,
-			// this LodChunk is empty
-			return true;
+				}
+			}
 		}
+		
+		// we checked everywhere, this LodChunk is empty
+		return true;
 	}
 	
 	
@@ -247,20 +276,164 @@ public class LodChunk
 	// output //
 	//========//
 	
-	/** Returns the color for the given direction */
-	public Color getColor(ColorDirection dir)
+	/**
+	 * Returns the data point for the given relative block position.
+	 */
+	public LodDataPoint getDataPointForBlockPos(int blockX, int blockZ)
 	{
-		return colors[dir.value];
+		return dataPoints[blockX / detail.dataPointWidth][blockZ / detail.dataPointWidth];
 	}
 	
-	public short getHeight()
+	public Color getColorForBlockPos(int blockX, int blockZ)
 	{
-		return height;
+		return getDataPointForBlockPos(blockX, blockZ).color;
 	}
 	
-	public short getDepth()
+	public short getHeightForBlockPos(int blockX, int blockZ)
 	{
-		return depth;
+		return getDataPointForBlockPos(blockX, blockZ).height;
+	}
+	
+	public short getDepthForBlockPos(int blockX, int blockZ)
+	{
+		return getDataPointForBlockPos(blockX, blockZ).depth;
+	}
+	
+	
+	public Color getColor(int xIndex, int zIndex)
+	{
+		return dataPoints[xIndex][zIndex].color;
+	}
+	
+	public short getHeight(int xIndex, int zIndex)
+	{
+		return dataPoints[xIndex][zIndex].height;
+	}
+	
+	public short getDepth(int xIndex, int zIndex)
+	{
+		return dataPoints[xIndex][zIndex].depth;
+	}
+	
+	public short calculateHighestPoint()
+	{
+		short highest = 0;
+		
+		for(int x = 0; x < detail.dataPointLengthCount; x++)
+		{
+			for(int z = 0; z < detail.dataPointLengthCount; z++)
+			{
+				if (getHeight(x,z) > highest)
+					highest = getHeight(x,z);
+			}
+		}
+		
+		return highest;
+	}
+	
+	
+	
+	/**
+	 * @param startX
+	 * @param startZ
+	 * @param endX
+	 * @param endZ
+	 * @return
+	 */
+	public short getAverageHeightOverArea(int startX, int startZ, int endX, int endZ)
+	{
+		if (startX == endX || startZ == endZ)
+			// we were given an area with 0 blocks in it
+			return getHeightForBlockPos(startX,startZ);
+		
+		int average = 0;
+		
+		for(int x = startX; x < endX; x++)
+			for(int z = startZ; z < endZ; z++)
+				average += getHeightForBlockPos(x,z);
+		
+		return (short) (average / ((endX - startX) * (endZ - startZ)));
+	}
+	
+	/**
+	 * @param startX
+	 * @param startZ
+	 * @param endX
+	 * @param endZ
+	 * @return
+	 */
+	public short getAverageDepthOverArea(int startX, int startZ, int endX, int endZ)
+	{
+		if (startX == endX || startZ == endZ)
+			// we were given an area with 0 blocks in it
+			return getDepthForBlockPos(startX,startZ);
+		
+		int average = 0;
+		
+		for(int x = startX; x < endX; x++)
+			for(int z = startZ; z < endZ; z++)
+				average += getDepthForBlockPos(x,z);
+		
+		return (short) (average / ((endX - startX) * (endZ - startZ)));
+	}
+	
+	
+	/**
+	 * Determine the color of this LOD.
+	 */
+	public Color getAverageColorOverArea(int startX, int startZ, int endX, int endZ, boolean debugging)
+	{
+		if (startX == endX || startZ == endZ)
+			// we were given an area with 0 blocks in it
+			return getColorForBlockPos(startX,startZ);
+		
+		
+		
+		int[] colorComponents = new int[3];
+		
+		
+		if (debugging)
+		{
+			// draw the squares as a black and white,
+			// like a checker board
+			
+			// only return 1 color to prevent
+			// getting back gray
+			if ((startX + startZ) % 2 == 0)
+				return DEBUG_WHITE;
+			else
+				return DEBUG_BLACK;
+		}
+		
+		
+		for(int x = startX; x < endX; x++)
+		{
+			for(int z = startZ; z < endZ; z++)
+			{
+				colorComponents = addColorToColorAverages(colorComponents, getColorForBlockPos(x,z));
+			}
+		}
+		
+		int numbPoints = ((endX - startX) * (endZ - startZ));
+		
+		return new Color(colorComponents[0]/numbPoints, colorComponents[1]/numbPoints, colorComponents[2]/numbPoints);
+	}
+	
+	
+	private int[] addColorToColorAverages(int[] colorAverages, Color colorToAdd) 
+	{
+		// convert the colorToAdd to an int array
+		float[] colorCompoments = new float[4];
+		colorCompoments = colorToAdd.getColorComponents(colorCompoments);
+		
+		// add each color component to the array
+		for(int rgbIndex = 0; rgbIndex < 3; rgbIndex++)
+		{
+			// * 255 + 0.5 taken from the Color java class
+			colorAverages[rgbIndex] += (int) (colorCompoments[rgbIndex] * 255 + 0.5);
+		}
+		
+		return colorAverages;
 	}
 	
 	
@@ -268,32 +441,28 @@ public class LodChunk
 	
 	
 	/**
-	 * Outputs all data in csv format
-	 * with the given delimiter.
-	 * <br>
-	 * Exports data in the form:
-	 * <br>
-	 * x, z, height, depth, rgb color data
+	 * Outputs all data in a csv format
+	 * with the given delimiter, if
+	 * dontSave is false. <br><br>
 	 * 
-	 * <br>
-	 * example output:
-	 * <br>
-	 * 5,8, 4, 0, 255,255,255, 255,255,255, 255,255,255, 255,255,255, 255,255,255, 255,255,255,
+	 * data format: <br>
+	 * x, z, dataPoint[0][0], dataPoint[0][1], ... <br>
+	 * x, z, height, depth, rgb color data,   height, depth, rgb.... <br><br>
+	 * 
+	 * example: <br>
+	 * 5,8,  4, 0, 255,255,255,  4, 0, 255, 255, 255, ...
 	 */
 	public String toData()
 	{
-		String s = "";
+		if (dontSave)
+			return "";
 		
+		String s = "";
 		s += Integer.toString(x) + DATA_DELIMITER +  Integer.toString(z) + DATA_DELIMITER;
 		
-		s += Short.toString(height) + DATA_DELIMITER;
-		
-		s += Short.toString(depth) + DATA_DELIMITER;
-		
-		for(int i = 0; i < colors.length; i++)
-		{
-			s += Integer.toString(colors[i].getRed()) + DATA_DELIMITER + Integer.toString(colors[i].getGreen()) + DATA_DELIMITER + Integer.toString(colors[i].getBlue()) + DATA_DELIMITER;
-		}
+		for (int i = 0; i < dataPoints.length; i++)
+			for (int j = 0; j < dataPoints[i].length; j++)
+				s += dataPoints[i][j].toData();
 		
 		return s;
 	}
@@ -306,8 +475,7 @@ public class LodChunk
 		
 		s += "x: " + x + " z: " + z + "\t";
 		
-		s += "(" + colors[ColorDirection.TOP.value].getRed() + ", " + colors[ColorDirection.TOP.value].getGreen() + ", " + colors[ColorDirection.TOP.value].getBlue() + ")";
-		
 		return s;
 	}
+	
 }

src/main/java/com/seibel/lod/objects/LodDataPoint.java

@@ -0,0 +1,95 @@
+package com.seibel.lod.objects;
+
+import java.awt.Color;
+
+import com.seibel.lod.handlers.LodDimensionFileHandler;
+
+/**
+ * This stores the height and color
+ * for a specific area in a LodChunk.
+ * 
+ * @author James Seibel
+ * @version 6-19-2021
+ */
+public class LodDataPoint
+{
+	/** This is what separates each piece of data in the toData method */
+	private static final char DATA_DELIMITER = LodDimensionFileHandler.DATA_DELIMITER;
+	
+	/** this is how many pieces of data are exported when toData is called */
+	public static final int NUMBER_OF_DELIMITERS = 5;
+	
+	private static final Color INVISIBLE = new Color(0,0,0,0);
+	
+	/** highest point */
+	public short height;
+	
+	/** lowest point */
+	public short depth;
+	
+	/** The average color for the 6 cardinal directions */
+	public Color color;
+	
+	
+	/**
+	 * Creates and empty LodDataPoint
+	 */
+	public LodDataPoint()
+	{
+		height = -1;
+		depth = -1;
+		color = INVISIBLE;
+	}
+	
+	
+	public LodDataPoint(short newHeight, short newDepth, Color newColor)
+	{
+		height = newHeight;
+		depth = newDepth;
+		color = newColor;
+	}
+	
+	public LodDataPoint(int newHeight, int newDepth, Color newColor)
+	{
+		height = (short) newHeight;
+		depth = (short) newDepth;
+		color = newColor;
+	}
+	
+	
+	/**
+	 * Outputs all data in a csv format
+	 * with the given delimiter.
+	 * <br>
+	 * Exports data in the form:
+	 * <br>
+	 * height, depth, rgb color data
+	 * 
+	 * <br>
+	 * example output:
+	 * <br>
+	 * 4, 0, 255,255,255, 
+	 */
+	public String toData()
+	{
+		String s = Short.toString(height) + DATA_DELIMITER;
+		
+		s += Short.toString(depth) + DATA_DELIMITER;
+		
+		s += Integer.toString(color.getRed()) + DATA_DELIMITER + Integer.toString(color.getGreen()) + DATA_DELIMITER + Integer.toString(color.getBlue()) + DATA_DELIMITER;
+		
+		return s;
+	}
+	
+	@Override
+	public String toString()
+	{
+		String s = Short.toString(height) + DATA_DELIMITER;
+		
+		s += Short.toString(depth) + DATA_DELIMITER;
+		
+		s += Integer.toString(color.getRed()) + DATA_DELIMITER + Integer.toString(color.getGreen()) + DATA_DELIMITER + Integer.toString(color.getBlue()) + DATA_DELIMITER;
+		
+		return s;
+	}
+}

src/main/java/com/seibel/lod/objects/LodDimension.java

@@ -4,7 +4,7 @@ import java.io.File;
 import java.io.IOException;
 
 import com.seibel.lod.handlers.LodDimensionFileHandler;
-import com.seibel.lod.util.LodUtils;
+import com.seibel.lod.util.LodUtil;
 
 import net.minecraft.client.Minecraft;
 import net.minecraft.util.math.ChunkPos;
@@ -17,7 +17,7 @@ import net.minecraft.world.server.ServerWorld;
  * for a given dimension.
  * 
  * @author James Seibel
- * @version 03-19-2021
+ * @version 06-27-2021
  */
 public class LodDimension
 {
@@ -26,8 +26,8 @@ public class LodDimension
 	private volatile int width;
 	private volatile int halfWidth;
 	
-	public LodRegion regions[][];
-	public boolean isRegionDirty[][];
+	public volatile LodRegion regions[][];
+	public volatile boolean isRegionDirty[][];
 	
 	private int centerX;
 	private int centerZ;
@@ -49,18 +49,18 @@ public class LodDimension
 			{
 				// local world
 				
-				ServerWorld serverWorld = LodUtils.getServerWorldFromDimension(newDimension);
+				ServerWorld serverWorld = LodUtil.getServerWorldFromDimension(newDimension);
 				// provider needs a separate variable to prevent
 				// the compiler from complaining
 				ServerChunkProvider provider = serverWorld.getChunkProvider();
-				saveDir = new File(provider.getSavedData().folder.getCanonicalFile() + "\\lod");
+				saveDir = new File(provider.getSavedData().folder.getCanonicalFile().getPath() + File.separatorChar + "lod");
 			}
 			else
 			{
 				// connected to server
 				
-				saveDir = new File(mc.gameDir.getCanonicalFile() + 
-						"\\lod server data\\" + LodUtils.getDimensionIDFromWorld(mc.world));
+				saveDir = new File(mc.gameDir.getCanonicalFile().getPath() +
+						File.separatorChar + "lod server data" + File.separatorChar + LodUtil.getDimensionIDFromWorld(mc.world));
 			}
 			
 			fileHandler = new LodDimensionFileHandler(saveDir, this);
@@ -242,7 +242,7 @@ public class LodDimension
 	 */
 	public void addLod(LodChunk lod)
 	{
-		RegionPos pos = LodUtils.convertChunkPosToRegionPos(new ChunkPos(lod.x, lod.z));
+		RegionPos pos = LodUtil.convertChunkPosToRegionPos(new ChunkPos(lod.x, lod.z));
 		
 		// don't continue if the region can't be saved
 		if (!regionIsInRange(pos.x, pos.z))
@@ -281,7 +281,7 @@ public class LodDimension
 	 */
 	public LodChunk getLodFromCoordinates(int chunkX, int chunkZ)
 	{
-		RegionPos pos = LodUtils.convertChunkPosToRegionPos(new ChunkPos(chunkX, chunkZ));
+		RegionPos pos = LodUtil.convertChunkPosToRegionPos(new ChunkPos(chunkX, chunkZ));
 		
 		LodRegion region = getRegion(pos.x, pos.z);
 		

src/main/java/com/seibel/lod/objects/LodRegion.java

@@ -7,7 +7,7 @@ package com.seibel.lod.objects;
  * one file in the file system.
  * 
  * @author James Seibel
- * @version 1-22-2021
+ * @version 6-12-2021
  */
 public class LodRegion
 {
@@ -61,9 +61,6 @@ public class LodRegion
 		int arrayX = Math.abs(chunkX % SIZE);
 		int arrayZ = Math.abs(chunkZ % SIZE);
 		
-		if(arrayX >= SIZE || arrayZ >= SIZE)
-			return null;
-		
 		return chunks[arrayX][arrayZ];
 	}
 	

src/main/java/com/seibel/lod/proxy/ClientProxy.java

@@ -5,13 +5,13 @@ import org.apache.logging.log4j.Logger;
 
 import com.seibel.lod.builders.LodBufferBuilder;
 import com.seibel.lod.builders.LodBuilder;
+import com.seibel.lod.handlers.LodConfig;
 import com.seibel.lod.objects.LodChunk;
 import com.seibel.lod.objects.LodDimension;
 import com.seibel.lod.objects.LodRegion;
 import com.seibel.lod.objects.LodWorld;
-import com.seibel.lod.render.LodRender;
-import com.seibel.lod.util.LodConfig;
-import com.seibel.lod.util.LodUtils;
+import com.seibel.lod.render.LodRenderer;
+import com.seibel.lod.util.LodUtil;
 
 import net.minecraft.client.Minecraft;
 import net.minecraft.profiler.IProfiler;
@@ -25,7 +25,7 @@ import net.minecraftforge.eventbus.api.SubscribeEvent;
  * and is the starting point for most of this program.
  * 
  * @author James_Seibel
- * @version 05-31-2021
+ * @version 06-27-2021
  */
 public class ClientProxy
 {
@@ -34,7 +34,7 @@ public class ClientProxy
 	private static LodWorld lodWorld = new LodWorld();
 	private static LodBuilder lodBuilder = new LodBuilder();
 	private static LodBufferBuilder lodBufferBuilder = new LodBufferBuilder(lodBuilder);
-	private static LodRender renderer = new LodRender(lodBufferBuilder);
+	private static LodRenderer renderer = new LodRenderer(lodBufferBuilder);
 	
 	Minecraft mc = Minecraft.getInstance();
 	
@@ -98,6 +98,7 @@ public class ClientProxy
 //		LodConfig.CLIENT.lodDetail.set(LodDetail.DOUBLE);
 //		LodConfig.CLIENT.lodColorStyle.set(LodColorStyle.INDIVIDUAL_SIDES);
 //		LodConfig.CLIENT.lodChunkRadiusMultiplier.set(12);
+//		LodConfig.CLIENT.distanceGenerationMode.set(DistanceGenerationMode.FEATURES);
 		
 		// Note to self:
 		// if "unspecified" shows up in the pie chart, it is
@@ -131,7 +132,7 @@ public class ClientProxy
 	public void worldLoadEvent(WorldEvent.Load event)
 	{
 		// the player just loaded a new world/dimension
-		lodWorld.selectWorld(LodUtils.getWorldID(event.getWorld()));
+		lodWorld.selectWorld(LodUtil.getWorldID(event.getWorld()));
 		// make sure the correct LODs are being rendered
 		// (if this isn't done the previous world's LODs may be drawn)
 		renderer.regenerateLODsNextFrame();
@@ -182,7 +183,7 @@ public class ClientProxy
 		return lodBuilder;
 	}
 	
-	public static LodRender getRenderer()
+	public static LodRenderer getRenderer()
 	{
 		return renderer;
 	}

src/main/java/com/seibel/lod/render/LodRenderer.java

@@ -3,6 +3,7 @@ package com.seibel.lod.render;
 import java.nio.ByteBuffer;
 import java.nio.ByteOrder;
 import java.nio.FloatBuffer;
+import java.util.HashSet;
 
 import org.lwjgl.opengl.GL11;
 
@@ -12,12 +13,13 @@ import com.mojang.blaze3d.systems.RenderSystem;
 import com.seibel.lod.builders.LodBufferBuilder;
 import com.seibel.lod.enums.FogDistance;
 import com.seibel.lod.enums.FogQuality;
+import com.seibel.lod.handlers.LodConfig;
 import com.seibel.lod.handlers.ReflectionHandler;
 import com.seibel.lod.objects.LodChunk;
 import com.seibel.lod.objects.LodDimension;
 import com.seibel.lod.objects.NearFarBuffer;
 import com.seibel.lod.objects.NearFarFogSetting;
-import com.seibel.lod.util.LodConfig;
+import com.seibel.lod.proxy.ClientProxy;
 
 import net.minecraft.client.Minecraft;
 import net.minecraft.client.entity.player.ClientPlayerEntity;
@@ -25,11 +27,14 @@ import net.minecraft.client.renderer.ActiveRenderInfo;
 import net.minecraft.client.renderer.BufferBuilder;
 import net.minecraft.client.renderer.FogRenderer;
 import net.minecraft.client.renderer.GameRenderer;
+import net.minecraft.client.renderer.WorldRenderer;
 import net.minecraft.client.renderer.vertex.DefaultVertexFormats;
 import net.minecraft.client.renderer.vertex.VertexBuffer;
 import net.minecraft.client.renderer.vertex.VertexFormat;
 import net.minecraft.potion.Effects;
 import net.minecraft.profiler.IProfiler;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.util.math.ChunkPos;
 import net.minecraft.util.math.MathHelper;
 import net.minecraft.util.math.vector.Matrix4f;
 import net.minecraft.util.math.vector.Vector3d;
@@ -41,14 +46,28 @@ import net.minecraft.util.math.vector.Vector3f;
  * This is where LODs are draw to the world. 
  * 
  * @author James Seibel
- * @version 05-08-2021
+ * @version 06-19-2021
  */
-public class LodRender
+public class LodRenderer
 {
 	/** this is the light used when rendering the LODs,
 	 * it should be something different than what is used by Minecraft */
 	private static final int LOD_GL_LIGHT_NUMBER = GL11.GL_LIGHT2;
-
+	
+	/** 
+	 * 64 MB by default is the maximum amount of memory that
+	 * can be directly allocated. <br><br>
+	 * 
+	 * I know there are commands to change that amount
+	 * (specifically "-XX:MaxDirectMemorySize"), but
+	 * I have no idea how to access that amount. <br> 
+	 * So I guess this will be the hard limit for now. <br><br>
+	 * 
+	 * https://stackoverflow.com/questions/50499238/bytebuffer-allocatedirect-and-xmx
+	 */
+	public static final int MAX_ALOCATEABLE_DIRECT_MEMORY = 64 * 1024 * 1024;
+	
+	
 	/** If true the LODs colors will be replaced with
 	 * a checkerboard, this can be used for debugging. */
 	public boolean debugging = false;
@@ -85,13 +104,15 @@ public class LodRender
 	
 	/** if this is true the LOD buffers should be regenerated,
 	 * provided they aren't already being regenerated. */
-	private boolean regen = false;
+	private volatile boolean regen = false;
+	
+	/** This HashSet contains every chunk that Vanilla Minecraft
+	 *  is going to render */
+	public HashSet<ChunkPos> vanillaRenderedChunks = new HashSet<>();
 	
 	
 	
-	
-	
-	public LodRender(LodBufferBuilder newLodBufferBuilder)
+	public LodRenderer(LodBufferBuilder newLodBufferBuilder)
 	{
 		mc = Minecraft.getInstance();
 		gameRender = mc.gameRenderer;
@@ -108,7 +129,6 @@ public class LodRender
 	 * @param newDimension The dimension to draw, if null doesn't replace the current dimension.
 	 * @param partialTicks how far into the current tick this method was called.
 	 */
-	@SuppressWarnings("deprecation")
 	public void drawLODs(LodDimension lodDim, float partialTicks, IProfiler newProfiler)
 	{		
 		if (lodDim == null)
@@ -168,7 +188,19 @@ public class LodRender
 		int totalLength = (int) farPlaneDistance * LodConfig.CLIENT.lodChunkRadiusMultiplier.get() * 2;
 		int numbChunksWide = (totalLength / LodChunk.WIDTH);
 		
+		// determine which LODs should not be rendered close to the player
+		HashSet<ChunkPos> chunkPosToSkip = getNearbyLodChunkPosToSkip(lodDim, player.getPosition());
 		
+		// see if the chunks Minecraft is going to render are the
+		// same as last time
+		if (!vanillaRenderedChunks.containsAll(chunkPosToSkip))
+		{
+			regen = true;
+			vanillaRenderedChunks = chunkPosToSkip;
+		}
+		
+		
+				
 		
 		
 		//=================//
@@ -476,15 +508,18 @@ public class LodRender
 	/**
 	 * setup the lighting to be used for the LODs
 	 */
-	@SuppressWarnings("deprecation")
 	private void setupLighting(LodDimension lodDimension, float partialTicks)
 	{
 		float sunBrightness = lodDimension.dimension.hasSkyLight() ? mc.world.getSunBrightness(partialTicks) : 0.2f;
 		float gammaMultiplyer = (float)mc.gameSettings.gamma - 0.5f;
-		float lightStrength = sunBrightness - 0.4f + (gammaMultiplyer * 0.2f);
+		float lightStrength = ((sunBrightness / 2f) - 0.2f) + (gammaMultiplyer * 0.2f);
 		
 		float lightAmbient[] = {lightStrength, lightStrength, lightStrength, 1.0f};
 		
+		// can be used for debugging
+//		if (partialTicks < 0.005)
+//			ClientProxy.LOGGER.debug(lightStrength);
+		
 		ByteBuffer temp = ByteBuffer.allocateDirect(16);
 		temp.order(ByteOrder.nativeOrder());
 		GL11.glLightfv(LOD_GL_LIGHT_NUMBER, GL11.GL_AMBIENT, (FloatBuffer) temp.asFloatBuffer().put(lightAmbient).flip());
@@ -493,30 +528,39 @@ public class LodRender
 		RenderSystem.enableLighting();
 	}
 	
-	
 	/**
 	 * Create all buffers that will be used.
 	 */
 	private void setupBuffers(int numbChunksWide)
 	{
-		// calculate the max amount of storage needed (in bytes)
-		int bufferMaxCapacity = (numbChunksWide * numbChunksWide * (6 * 4 * (3 + 4)));
-		// (numbChunksWide * numbChunksWide * 
-		// (sidesOnACube * pointsInASquare * (positionPoints + colorPoints)))
+		// calculate the max amount of memory needed (in bytes)
+		int bufferMemory = RenderUtil.getBufferMemoryForRadiusMultiplier(LodConfig.CLIENT.lodChunkRadiusMultiplier.get());
 		
-		// TODO complain or do something when memory is too low
-		// currently the VM will just crash and complain there is no more memory
-		// issue #4
-		drawableNearBuffer = new BufferBuilder(bufferMaxCapacity);
-		drawableFarBuffer = new BufferBuilder(bufferMaxCapacity);
+		// if the required memory is greater than the 
+		// MAX_ALOCATEABLE_DIRECT_MEMORY lower the lodChunkRadiusMultiplier
+		// to fit.
+		if (bufferMemory > MAX_ALOCATEABLE_DIRECT_MEMORY)
+		{
+			int maxRadiusMultiplier = RenderUtil.getMaxRadiusMultiplierWithAvaliableMemory(LodConfig.CLIENT.lodTemplate.get(), LodConfig.CLIENT.lodDetail.get());
+			
+			ClientProxy.LOGGER.warn("The lodChunkRadiusMultiplier was set too high "
+					+ "and had to be lowered to fit memory constraints "
+					+ "from " + LodConfig.CLIENT.lodChunkRadiusMultiplier.get() + " " 
+					+ "to " + maxRadiusMultiplier);
+			
+			LodConfig.CLIENT.lodChunkRadiusMultiplier.set(
+					maxRadiusMultiplier);
+			
+			bufferMemory = RenderUtil.getBufferMemoryForRadiusMultiplier(maxRadiusMultiplier);
+		}
 		
-		lodBufferBuilder.setupBuffers(bufferMaxCapacity);
+		drawableNearBuffer = new BufferBuilder(bufferMemory);
+		drawableFarBuffer = new BufferBuilder(bufferMemory);
+		
+		lodBufferBuilder.setupBuffers(bufferMemory);
 	}
 	
 	
-
-	
-	
 	
 	
 	
@@ -636,4 +680,79 @@ public class LodRender
 	
 	
 	
+	/**
+	 * Get a HashSet of all ChunkPos within the normal render distance
+	 * that should not be rendered.
+	 */
+	private HashSet<ChunkPos> getNearbyLodChunkPosToSkip(LodDimension lodDim, BlockPos playerPos) 
+	{
+		int chunkRenderDist = mc.gameSettings.renderDistanceChunks;
+		int blockRenderDist = chunkRenderDist * 16;
+		ChunkPos centerChunk = new ChunkPos(playerPos);
+		
+		// skip chunks that are already going to be rendered by Minecraft
+		HashSet<ChunkPos> posToSkip = getRenderedChunks();
+		
+		
+		// go through each chunk within the normal view distance
+		for(int x = centerChunk.x - chunkRenderDist; x < centerChunk.x + chunkRenderDist; x++)
+		{
+			for(int z = centerChunk.z - chunkRenderDist; z < centerChunk.z + chunkRenderDist; z++)
+			{
+				LodChunk lod = lodDim.getLodFromCoordinates(x, z);
+				if (lod != null)
+				{
+					short lodHighestPoint = lod.calculateHighestPoint();
+					
+					if (playerPos.getY() < lodHighestPoint)
+					{
+						// don't draw Lod's that are taller than the player
+						// to prevent LODs being drawn on top of the player
+						posToSkip.add(new ChunkPos(x, z));
+					}
+					else if (blockRenderDist < Math.abs(playerPos.getY() - lodHighestPoint))
+					{
+						// draw Lod's that are lower than the player's view range
+						posToSkip.remove(new ChunkPos(x, z));
+					}
+				}
+			}
+		}
+		
+		return posToSkip;
+	}
+	
+	/**
+	 * This method returns the ChunkPos of all chunks that Minecraft
+	 * is going to render this frame. <br><br>
+	 * 
+	 * Note: This isn't perfect. It will return some chunks that are outside
+	 * 		 the clipping plane. (For example, if you are high above the ground some chunks
+	 * 		 will be incorrectly added, even though they are outside render range).
+	 */
+	public static HashSet<ChunkPos> getRenderedChunks()
+	{
+		HashSet<ChunkPos> loadedPos = new HashSet<>();
+		
+		Minecraft mc = Minecraft.getInstance();
+		
+		// Wow those are some long names!
+		
+		// go through every RenderInfo to get the compiled chunks
+		for(WorldRenderer.LocalRenderInformationContainer 
+				worldrenderer$localrenderinformationcontainer : mc.worldRenderer.renderInfos)
+		{
+			if (!worldrenderer$localrenderinformationcontainer.renderChunk.getCompiledChunk().isEmpty())
+			{
+				// add the ChunkPos for every empty compiled chunk
+				BlockPos bpos = worldrenderer$localrenderinformationcontainer.renderChunk.getPosition();
+				
+				loadedPos.add(new ChunkPos(bpos.getX() / 16, bpos.getZ() / 16));
+			}
+		}
+		
+		return loadedPos;
+	}
+	
+	
 }

src/main/java/com/seibel/lod/render/RenderUtil.java

@@ -1,16 +1,39 @@
 package com.seibel.lod.render;
 
+import com.seibel.lod.enums.LodDetail;
+import com.seibel.lod.enums.LodTemplate;
+import com.seibel.lod.handlers.LodConfig;
+
 import net.minecraft.client.Minecraft;
+import net.minecraft.util.math.ChunkPos;
 
 /**
  * This holds miscellaneous helper code
  * to be used in the rendering process.
  * 
  * @author James Seibel
- * @version 2-13-2021
+ * @version 6-17-2021
  */
 public class RenderUtil
 {
+	private static final Minecraft mc = Minecraft.getInstance();
+	
+	
+	/**
+	 * Returns if the given ChunkPos is in the loaded area of the world.
+	 * @param centerCoordinate the center of the loaded world (probably the player's ChunkPos)
+	 */
+	public static boolean isChunkPosInLoadedArea(ChunkPos pos, ChunkPos center)
+	{
+		Minecraft mc = Minecraft.getInstance();
+		
+		return (pos.x >= center.x - mc.gameSettings.renderDistanceChunks 
+				&& pos.x <= center.x + mc.gameSettings.renderDistanceChunks) 
+				&& 
+				(pos.z >= center.z - mc.gameSettings.renderDistanceChunks 
+				&& pos.z <= center.z + mc.gameSettings.renderDistanceChunks);
+	}
+	
 	/**
 	 * Returns if the given coordinate is in the loaded area of the world.
 	 * @param centerCoordinate the center of the loaded world
@@ -42,4 +65,30 @@ public class RenderUtil
 				&& j <= lodRadius + halfRadius);
 	}
 	
+	
+	/**
+	 * Get how much buffer memory would be required for the given radius multiplier
+	 */
+	public static int getBufferMemoryForRadiusMultiplier(int radiusMultiplier)
+	{ 
+		int numbChunksWide = mc.gameSettings.renderDistanceChunks * 
+							radiusMultiplier * 2;
+		
+		// calculate the max amount of buffer memory needed (in bytes)
+		return numbChunksWide * numbChunksWide *
+				LodConfig.CLIENT.lodTemplate.get().
+				getBufferMemoryForSingleLod(LodConfig.CLIENT.lodDetail.get());
+	}
+	
+	/**
+	 * Returns the maxViewDistanceMultiplier for the given LodTemplate
+	 * at the given LodDetail level.
+	 */
+	public static int getMaxRadiusMultiplierWithAvaliableMemory(LodTemplate lodTemplate, LodDetail lodDetail)
+	{
+		int maxNumberOfLods = LodRenderer.MAX_ALOCATEABLE_DIRECT_MEMORY / lodTemplate.getBufferMemoryForSingleLod(lodDetail); 
+		int numbLodsWide = (int) Math.sqrt(maxNumberOfLods);
+		
+		return numbLodsWide / (2 * mc.gameSettings.renderDistanceChunks);
+	}
 }

src/main/java/com/seibel/lod/util/LodUtil.java

@@ -1,5 +1,8 @@
 package com.seibel.lod.util;
 
+import java.awt.Color;
+import java.io.File;
+
 import com.seibel.lod.objects.LodRegion;
 import com.seibel.lod.objects.RegionPos;
 
@@ -18,9 +21,9 @@ import net.minecraft.world.server.ServerWorld;
  * This class holds methods that may be used in multiple places.
  * 
  * @author James Seibel
- * @version 04-01-2021
+ * @version 06-27-2021
  */
-public class LodUtils
+public class LodUtil
 {
 	private static Minecraft mc = Minecraft.getInstance();
 	
@@ -126,7 +129,7 @@ public class LodUtils
 			if(mc.world == null)
 				return "";
 			
-			ServerWorld serverWorld = LodUtils.getServerWorldFromDimension(mc.world.getDimensionType());
+			ServerWorld serverWorld = LodUtil.getServerWorldFromDimension(mc.world.getDimensionType());
 			if(serverWorld == null)
 				return "";
 			
@@ -141,8 +144,8 @@ public class LodUtils
 			ServerData server = mc.getCurrentServerData();
 			return server.serverName + ", IP " + 
 					server.serverIP + ", GameVersion " + 
-					server.gameVersion.getString() + "\\"
-					+ "dim_" + mc.world.getDimensionType().getEffects().getPath() + "\\";
+					server.gameVersion.getString() + File.separatorChar
+					+ "dim_" + mc.world.getDimensionType().getEffects().getPath() + File.separatorChar;
 		}
 	}
 
@@ -164,7 +167,7 @@ public class LodUtils
 			// this will return the world save location
 			// and the dimension folder
 			
-			ServerWorld serverWorld = LodUtils.getServerWorldFromDimension(world.getDimensionType());
+			ServerWorld serverWorld = LodUtil.getServerWorldFromDimension(world.getDimensionType());
 			if(serverWorld == null)
 				throw new NullPointerException("getDimensionIDFromWorld wasn't able to get the ServerWorld for the dimension " + world.getDimensionType().getEffects().getPath());
 			
@@ -179,8 +182,8 @@ public class LodUtils
 			ServerData server = mc.getCurrentServerData();
 			return server.serverName + ", IP " + 
 					server.serverIP + ", GameVersion " + 
-					server.gameVersion.getString() + "\\"
-					+ "dim_" + world.getDimensionType().getEffects().getPath() + "\\";
+					server.gameVersion.getString() + File.separatorChar
+					+ "dim_" + world.getDimensionType().getEffects().getPath() + File.separatorChar;
 		}
 	}
 	
@@ -198,7 +201,7 @@ public class LodUtils
 			
 			// get the world name
 			int saveIndex = dimId.indexOf("saves") + 1 + "saves".length();
-			int slashIndex = dimId.indexOf('\\', saveIndex);
+			int slashIndex = dimId.indexOf(File.separatorChar, saveIndex);
 			dimId = dimId.substring(saveIndex, slashIndex);
 			return dimId;
 		}
@@ -212,4 +215,26 @@ public class LodUtils
 	}
 	
 	
+	
+	/**
+	 * Convert a BlockColors int into a Color object.
+	 */
+	public static Color intToColor(int num)
+	{
+		int filter = 0b11111111;
+		
+		int red = (num >> 16 ) & filter;
+		int green = (num >> 8 ) & filter;
+		int blue = num & filter;
+		
+		return new Color(red, green, blue);
+	}
+	
+	/**
+	 * Convert a Color into a BlockColors object.
+	 */
+	public static int colorToInt(Color color)
+	{
+		return color.getRGB();
+	}
 }

src/main/java/com/seibel/lod/util/ReflectionHandler.java

@@ -1,96 +0,0 @@
-package com.seibel.lod.util;
-
-import java.lang.reflect.Field;
-
-import com.seibel.lod.enums.FogQuality;
-
-import net.minecraft.client.Minecraft;
-
-/**
- * This object is used to get variables from methods
- * where they are private.
- * 
- * @author James Seibel
- * @version 02-18-2021
- */
-public class ReflectionHandler
-{
-	private Minecraft mc = Minecraft.getInstance();
-	
-	public Field ofFogField = null;
-	
-	
-	public ReflectionHandler()
-	{
-		setupFogField();
-	}
-	
-	/**
-	 * Similar to setupFovMethod.
-	 */
-	private void setupFogField()
-	{
-		// get every variable from the entity renderer
-		Field[] vars = mc.gameSettings.getClass().getDeclaredFields();
-				
-		// try and find the ofFogType variable in gameSettings
-		for(Field f : vars)
-		{
-			if(f.getName().equals("ofFogType"))
-			{
-				ofFogField = f;
-				return;
-			}
-		}
-		
-		// we didn't find the field,
-		// either optifine isn't installed, or
-		// optifine changed the name of the variable
-		ofFogField = null;
-	}
-	
-	
-	
-	
-	
-	/**
-	 * Get what type of fog optifine is currently set to render.
-	 */
-	public FogQuality getFogQuality()
-	{
-		if (ofFogField == null)
-		{
-			// either optifine isn't installed,
-			// the variable name was changed, or
-			// the setup method wasn't called yet.
-			return FogQuality.OFF;
-		}
-		
-		int returnNum = 0;
-		
-		try
-		{
-			returnNum = (int)ofFogField.get(mc.gameSettings);
-		}
-		catch (IllegalArgumentException | IllegalAccessException e)
-		{
-			e.printStackTrace();
-		}
-		
-		switch (returnNum)
-		{
-			case 0:
-				return FogQuality.FAST;
-			case 1:
-				return FogQuality.FAST;
-			case 2:
-				return FogQuality.FANCY;
-			case 3:
-				return FogQuality.OFF;
-				
-			default:
-				return FogQuality.FAST;
-		}
-	}
-	
-}

src/main/resources/META-INF/accesstransformer.cfg

@@ -16,6 +16,29 @@ public net.minecraft.world.storage.DimensionSavedDataManager field_215759_d # fo
 # used when generating LodChunks
 public net.minecraft.block.AbstractBlock$AbstractBlockState field_235704_h_ # materialColor
 
+# used when determining which chunks Vanilla Minecraft is going to render
+public net.minecraft.client.renderer.WorldRenderer$LocalRenderInformationContainer
+public net.minecraft.client.renderer.WorldRenderer field_72755_R # renderInfos
+public net.minecraft.client.renderer.WorldRenderer$LocalRenderInformationContainer field_178036_a # renderChunk
+
+# used in world generation
+public net.minecraft.world.server.ServerWorld field_241106_P_ # structuremanager
+public net.minecraft.world.gen.Heightmap func_202267_b(II)I # getDataArrayIndex
+public net.minecraft.world.gen.Heightmap func_202272_a(III)V # set
+public net.minecraft.world.chunk.Chunk field_76634_f # heightMap
+public net.minecraft.world.chunk.Chunk field_76652_q # sections
+public net.minecraft.world.chunk.ChunkPrimer field_201661_i # sections
+public net.minecraft.world.server.ChunkManager field_219269_w # templateManager
+public net.minecraft.world.server.ChunkManager field_219256_j # lightManager
+public net.minecraft.world.gen.feature.template.TemplateManager field_186240_a # templates
+public net.minecraft.world.biome.Biome field_242424_k # biomeGenerationSettings
+public net.minecraft.world.gen.blockstateprovider.WeightedBlockStateProvider field_227406_b_ # weightedStates
+public net.minecraft.world.gen.placement.ConfiguredPlacement field_215096_a # decorator
+public net.minecraft.world.gen.placement.ConfiguredPlacement field_215097_b # config
+public net.minecraft.util.WeightedList field_220658_a # weightedEntries
+public net.minecraft.world.gen.feature.FeatureSpread field_242250_b # base
+public net.minecraft.world.gen.feature.FeatureSpread field_242251_c # spread
+
 
 
 #=====================#