Surface decorators (including bisected blocks)

src/main/java/ninja/bytecode/iris/generator/BiomeChunkGenerator.java

@@ -19,7 +19,6 @@ import ninja.bytecode.iris.util.IrisInterpolation;
 import ninja.bytecode.iris.util.RNG;
 import ninja.bytecode.shuriken.collections.KList;
 import ninja.bytecode.shuriken.collections.KMap;
-import ninja.bytecode.shuriken.logging.L;
 import ninja.bytecode.shuriken.math.M;
 
 @Data

src/main/java/ninja/bytecode/iris/generator/TerrainChunkGenerator.java

@@ -2,11 +2,14 @@ package ninja.bytecode.iris.generator;
 
 import org.bukkit.Material;
 import org.bukkit.World;
+import org.bukkit.block.data.Bisected;
 import org.bukkit.block.data.BlockData;
+import org.bukkit.block.data.Bisected.Half;
 
 import lombok.Data;
 import lombok.EqualsAndHashCode;
 import ninja.bytecode.iris.object.IrisBiome;
+import ninja.bytecode.iris.object.IrisBiomeDecorator;
 import ninja.bytecode.iris.object.IrisRegion;
 import ninja.bytecode.iris.object.atomics.AtomicSliver;
 import ninja.bytecode.iris.util.BiomeMap;
@@ -68,7 +71,38 @@ public abstract class TerrainChunkGenerator extends ParallelChunkGenerator
 				block = layers.hasIndex(depth) ? layers.get(depth) : STONE;
 				depth++;
 			}
+
 			sliver.set(k, block);
+
+			if(k == Math.max(height, fluidHeight) && block.getMaterial().isSolid() && k < 255)
+			{
+				int j = 0;
+
+				for(IrisBiomeDecorator i : biome.getDecorators())
+				{
+					BlockData d = i.getBlockData(getMasterRandom().nextParallelRNG(biome.hashCode() + j++), wx, wz);
+
+					if(d != null)
+					{
+						if(d instanceof Bisected && k < 254)
+						{
+							Bisected t = ((Bisected) d.clone());
+							t.setHalf(Half.TOP);
+							Bisected b = ((Bisected) d.clone());
+							b.setHalf(Half.BOTTOM);
+							sliver.set(k + 1, b);
+							sliver.set(k + 2, t);
+						}
+
+						else
+						{
+							sliver.set(k + 1, d);
+						}
+
+						break;
+					}
+				}
+			}
 		}
 	}
 

src/main/java/ninja/bytecode/iris/object/IrisBiomeDecorator.java

@@ -12,9 +12,11 @@ import ninja.bytecode.shuriken.collections.KMap;
 @Data
 public class IrisBiomeDecorator
 {
+	private Dispersion variance = Dispersion.SCATTER;
 	private Dispersion dispersion = Dispersion.SCATTER;
 	private int iterations = 5;
 	private double zoom = 1;
+	private double chance = 0.1;
 	private KList<String> palette = new KList<String>().qadd("GRASS");
 
 	private transient KMap<Long, CNG> layerGenerators;
@@ -33,17 +35,26 @@ public class IrisBiomeDecorator
 		{
 			layerGenerators.put(key, CNG.signature(rng.nextParallelRNG(iterations + getBlockData().size())));
 		}
-
+		
 		return layerGenerators.get(key);
 	}
 
 	public KList<String> add(String b)
 	{
 		palette.add(b);
-
 		return palette;
 	}
 
+	public BlockData getBlockData(RNG rng, double x, double z)
+	{
+		if(getGenerator(rng).fitDoubleD(0D, 1D, x * (dispersion.equals(Dispersion.SCATTER) ? 1000D : 1D), z * (dispersion.equals(Dispersion.SCATTER) ? 1000D : 1D)) <= chance)
+		{
+			return getBlockData().get(getGenerator(rng.nextParallelRNG(53)).fit(0, getBlockData().size() - 1, x * (dispersion.equals(Dispersion.SCATTER) ? 1000D : 1D), z * (dispersion.equals(Dispersion.SCATTER) ? 1000D : 1D)));
+		}
+
+		return null;
+	}
+
 	public KList<BlockData> getBlockData()
 	{
 		if(blockData == null)

src/main/java/ninja/bytecode/iris/util/ObjectResourceLoader.java

@@ -6,7 +6,6 @@ import org.bukkit.util.BlockVector;
 
 import ninja.bytecode.iris.Iris;
 import ninja.bytecode.iris.object.IrisObject;
-import ninja.bytecode.shuriken.logging.L;
 
 public class ObjectResourceLoader extends ResourceLoader<IrisObject>
 {