slant palette things

common/addons/chunk-generator-noise-3d/src/main/java/com/dfsek/terra/addons/chunkgenerator/generation/generators/NoiseChunkGenerator3D.java

@@ -16,9 +16,11 @@ import com.dfsek.terra.api.world.biome.Generator;
 import com.dfsek.terra.api.world.biome.TerraBiome;
 import com.dfsek.terra.api.world.biome.generation.BiomeProvider;
 import com.dfsek.terra.api.world.generator.ChunkData;
+import com.dfsek.terra.api.world.generator.Palette;
 import com.dfsek.terra.api.world.generator.Sampler;
 import com.dfsek.terra.api.world.generator.TerraChunkGenerator;
 import com.dfsek.terra.api.world.generator.TerraGenerationStage;
+import net.jafama.FastMath;
 import org.jetbrains.annotations.NotNull;
 
 import java.util.ArrayList;
@@ -30,9 +32,12 @@ public class NoiseChunkGenerator3D implements TerraChunkGenerator {
     private final TerraPlugin main;
     private final List<TerraGenerationStage> blockPopulators = new ArrayList<>();
 
+    private final BlockState air;
+
     public NoiseChunkGenerator3D(ConfigPack c, TerraPlugin main) {
         this.configPack = c;
         this.main = main;
+        this.air = main.getWorldHandle().air();
         c.getStages().forEach(stage -> blockPopulators.add(stage.newInstance(c)));
     }
 
@@ -148,4 +153,26 @@ public class NoiseChunkGenerator3D implements TerraChunkGenerator {
     public List<TerraGenerationStage> getGenerationStages() {
         return blockPopulators;
     }
+
+    @Override
+    public BlockState getBlock(World world, int x, int y, int z) {
+        TerraWorld terraWorld = main.getWorld(world);
+        BiomeProvider provider = terraWorld.getBiomeProvider();
+        TerraBiome biome = provider.getBiome(x, z);
+        Palette palette = biome.getGenerator(world).getPaletteSettings().getPalette(y);
+        Sampler sampler = terraWorld.getConfig().getSamplerCache().get(x, z);
+        int fdX = FastMath.floorMod(x, 16);
+        int fdZ = FastMath.floorMod(z, 16);
+        double noise = sampler.sample(fdX, y, fdZ);
+        if(noise > 0) {
+            int level = 0;
+            for(int yi = world.getMaxHeight() - 1; yi > y; yi--) {
+                if(sampler.sample(fdX, yi, fdZ) > 0) level++;
+                else level = 0;
+            }
+            return palette.get(level, x, y, z);
+        } /* else if(y <= biome.getConfig().getSeaLevel()) {
+            return biome.getConfig().getOceanPalette().get(biome.getConfig().getSeaLevel() - y, x, y, z);
+        } */ else return air;
+    }
 }

common/addons/chunk-generator-noise-3d/src/main/java/com/dfsek/terra/addons/chunkgenerator/palette/PaletteHolder.java

@@ -0,0 +1,22 @@
+package com.dfsek.terra.addons.chunkgenerator.palette;
+
+import com.dfsek.terra.api.world.generator.Palette;
+
+public class PaletteHolder {
+    private final Palette[] palettes;
+    private final int offset;
+
+    protected PaletteHolder(Palette[] palettes, int offset) {
+        this.palettes = palettes;
+        this.offset = offset;
+    }
+
+    public Palette getPalette(int y) {
+        int index = y + offset;
+        return index >= 0
+                ? index < palettes.length
+                ? palettes[index]
+                : palettes[palettes.length - 1]
+                : palettes[0];
+    }
+}

common/addons/chunk-generator-noise-3d/src/main/java/com/dfsek/terra/addons/chunkgenerator/palette/PaletteHolderBuilder.java

@@ -0,0 +1,36 @@
+package com.dfsek.terra.addons.chunkgenerator.palette;
+
+import com.dfsek.terra.api.world.generator.Palette;
+import net.jafama.FastMath;
+
+import java.util.Map;
+import java.util.TreeMap;
+
+public class PaletteHolderBuilder {
+    private final TreeMap<Integer, Palette> paletteMap = new TreeMap<>();
+
+    public PaletteHolderBuilder add(int y, Palette palette) {
+        paletteMap.put(y, palette);
+        return this;
+    }
+
+    public PaletteHolder build() {
+
+        int min = FastMath.min(paletteMap.keySet().stream().min(Integer::compareTo).orElse(0), 0);
+        int max = FastMath.max(paletteMap.keySet().stream().max(Integer::compareTo).orElse(255), 255);
+
+        Palette[] palettes = new Palette[paletteMap.lastKey() + 1 - min];
+        for(int y = min; y <= FastMath.max(paletteMap.lastKey(), max); y++) {
+            Palette d = null;
+            for(Map.Entry<Integer, Palette> e : paletteMap.entrySet()) {
+                if(e.getKey() >= y) {
+                    d = e.getValue();
+                    break;
+                }
+            }
+            if(d == null) throw new IllegalArgumentException("No palette for Y=" + y);
+            palettes[y - min] = d;
+        }
+        return new PaletteHolder(palettes, -min);
+    }
+}

common/addons/chunk-generator-noise-3d/src/main/java/com/dfsek/terra/addons/chunkgenerator/palette/PaletteHolderLoader.java

@@ -0,0 +1,25 @@
+package com.dfsek.terra.addons.chunkgenerator.palette;
+
+import com.dfsek.tectonic.exception.LoadException;
+import com.dfsek.tectonic.loading.ConfigLoader;
+import com.dfsek.tectonic.loading.TypeLoader;
+import com.dfsek.terra.api.world.generator.Palette;
+
+import java.lang.reflect.AnnotatedType;
+import java.util.List;
+import java.util.Map;
+
+public class PaletteHolderLoader implements TypeLoader<PaletteHolder> {
+    @SuppressWarnings("unchecked")
+    @Override
+    public PaletteHolder load(AnnotatedType type, Object o, ConfigLoader configLoader) throws LoadException {
+        List<Map<String, Integer>> palette = (List<Map<String, Integer>>) o;
+        PaletteHolderBuilder builder = new PaletteHolderBuilder();
+        for(Map<String, Integer> layer : palette) {
+            for(Map.Entry<String, Integer> entry : layer.entrySet()) {
+                builder.add(entry.getValue(), configLoader.loadType(Palette.class, entry.getKey()));
+            }
+        }
+        return builder.build();
+    }
+}

common/addons/chunk-generator-noise-3d/src/main/java/com/dfsek/terra/addons/chunkgenerator/palette/SlantHolder.java

@@ -0,0 +1,22 @@
+package com.dfsek.terra.addons.chunkgenerator.palette;
+
+
+import java.util.TreeMap;
+
+public class SlantHolder {
+    private final TreeMap<Double, PaletteHolder> layers;
+    private final double minSlope;
+
+    public SlantHolder(TreeMap<Double, PaletteHolder> layers, double minSlope) {
+        this.layers = layers;
+        this.minSlope = minSlope;
+    }
+
+    public PaletteHolder getPalette(double slope) {
+        return layers.floorEntry(slope).getValue();
+    }
+
+    public double getMinSlope() {
+        return minSlope;
+    }
+}