E

src/main/java/com/github/halotroop/litecraft/world/Chunk.java

@@ -184,6 +184,14 @@ public class Chunk implements BlockAccess, WorldGenConstants, DataStorage
 				}
 			}
 		}
+		//
+		DataSection properties = data.get("properties");
+		try
+		{
+			this.fullyGenerated = properties.readBoolean(0); // index 0 is the "fully generated" property
+		}
+		catch (Throwable e)
+		{ System.out.println("An exception occurred reading properties for a chunk! This could be a benign error due to updates to chunk properties.");}
 	}
 
 	private int nextId; // for saving
@@ -219,6 +227,10 @@ public class Chunk implements BlockAccess, WorldGenConstants, DataStorage
 		//
 		data.put("palette", paletteData);
 		data.put("block", blockData);
+		//
+		DataSection properties = new DataSection();
+		properties.writeBoolean(this.fullyGenerated);
+		data.put("properties", properties);
 		dirty = true;
 	}
 }

src/main/java/com/github/halotroop/litecraft/world/World.java

@@ -57,7 +57,7 @@ public class World implements BlockAccess, WorldGenConstants
 		for (int i = (0 - (size / 2)); i < (size / 2); i++)
 			for (int k = (0 - (size / 2)); k < (size / 2); k++)
 				for (int y = -2; y < 0; ++y)
-					this.getChunk(i, y, k).setRender(true);
+					this.loadChunk(i, y, k).setRender(true);
 		System.out.println("Generated world in " + (System.currentTimeMillis() - time) + " milliseconds");
 	}
 
@@ -74,6 +74,15 @@ public class World implements BlockAccess, WorldGenConstants
 		return chunk;
 	}
 
+	public Chunk loadChunk(int chunkX, int chunkY, int chunkZ)
+	{
+		return this.chunks.computeIfAbsent(posHash(chunkX, chunkY, chunkZ), pos ->
+		{
+			Chunk readChunk = save.readChunk(chunkX, chunkY, chunkZ, this.dimension);
+			return readChunk == null ? this.chunkGenerator.generateChunk(chunkX, chunkY, chunkZ) : readChunk;
+		});
+	}
+
 	/** @return whether the chunk was unloaded without errors. Will often, but not always, be equal to whether the chunk was already in memory. */
 	public boolean unloadChunk(int chunkX, int chunkY, int chunkZ)
 	{