image to biome stuff

common/src/main/java/com/dfsek/terra/biome/ImageBiomeProvider.java

@@ -0,0 +1,54 @@
+package com.dfsek.terra.biome;
+
+import com.dfsek.terra.api.world.biome.TerraBiome;
+import com.dfsek.terra.registry.TerraRegistry;
+import net.jafama.FastMath;
+
+import java.awt.*;
+import java.awt.image.BufferedImage;
+import java.util.HashMap;
+import java.util.Map;
+
+public class ImageBiomeProvider implements BiomeProvider {
+    private final Map<Color, TerraBiome> colorBiomeMap = new HashMap<>();
+    private final BufferedImage image;
+    private final int resolution;
+
+    public ImageBiomeProvider(TerraRegistry<TerraBiome> registry, BufferedImage image, int resolution) {
+        this.image = image;
+        this.resolution = resolution;
+        registry.forEach(biome -> colorBiomeMap.put(new Color(biome.getColor()), biome));
+    }
+
+    private static int distance(Color a, Color b) {
+        return FastMath.abs(a.getRed() - b.getRed()) + FastMath.abs(a.getGreen() - b.getGreen()) + FastMath.abs(a.getBlue() - b.getBlue());
+    }
+
+    @Override
+    public TerraBiome getBiome(int x, int z) {
+        Color color = new Color(image.getRGB(FastMath.floorMod(x / resolution, image.getWidth()), FastMath.floorMod(z / resolution, image.getHeight())));
+
+        return colorBiomeMap.get(colorBiomeMap.keySet().stream().reduce(colorBiomeMap.keySet().stream().findAny().orElseThrow(IllegalStateException::new), (running, element) -> {
+            int d1 = distance(color, running);
+            int d2 = distance(color, element);
+            return d1 < d2 ? running : element;
+        }));
+    }
+
+    public static class ImageBiomeProviderBuilder implements BiomeProviderBuilder {
+        private final BufferedImage image;
+        private final int resolution;
+        private final TerraRegistry<TerraBiome> registry;
+
+        public ImageBiomeProviderBuilder(BufferedImage image, int resolution, TerraRegistry<TerraBiome> registry) {
+            this.image = image;
+            this.resolution = resolution;
+            this.registry = registry;
+        }
+
+        @Override
+        public BiomeProvider build(long seed) {
+            return new ImageBiomeProvider(registry, image, resolution);
+        }
+    }
+}

common/src/main/java/com/dfsek/terra/biome/UserDefinedBiome.java

@@ -5,7 +5,6 @@ import com.dfsek.terra.api.platform.world.Biome;
 import com.dfsek.terra.api.platform.world.World;
 import com.dfsek.terra.api.world.biome.Generator;
 import com.dfsek.terra.api.world.biome.TerraBiome;
-import com.dfsek.terra.config.base.ConfigPack;
 import com.dfsek.terra.config.builder.GeneratorBuilder;
 import com.dfsek.terra.config.templates.BiomeTemplate;
 
@@ -20,18 +19,15 @@ public class UserDefinedBiome implements TerraBiome {
     private final ProbabilityCollection<Biome> vanilla;
     private final String id;
     private final BiomeTemplate config;
-    private final ConfigPack pack;
-    private UserDefinedBiome erode;
     private final int color;
     private final Set<String> tags;
 
 
-    public UserDefinedBiome(ProbabilityCollection<Biome> vanilla, GeneratorBuilder gen, BiomeTemplate config, ConfigPack pack) {
+    public UserDefinedBiome(ProbabilityCollection<Biome> vanilla, GeneratorBuilder gen, BiomeTemplate config) {
         this.vanilla = vanilla;
         this.gen = gen;
         this.id = config.getID();
         this.config = config;
-        this.pack = pack;
         this.color = config.getColor();
         this.tags = config.getTags() == null ? new HashSet<>() : config.getTags();
         tags.add("BIOME:" + id);
@@ -47,19 +43,11 @@ public class UserDefinedBiome implements TerraBiome {
         return vanilla;
     }
 
-
+    @Override
     public String getID() {
         return id;
     }
 
-    public UserDefinedBiome getErode() {
-        if(erode == null) {
-            erode = (config.getErode() == null) ? this : pack.getBiome(config.getErode());
-        }
-        return erode;
-    }
-
-
     public BiomeTemplate getConfig() {
         return config;
     }

common/src/main/java/com/dfsek/terra/biome/pipeline/BiomePipeline.java

@@ -20,6 +20,13 @@ public class BiomePipeline {
         this.init = init;
     }
 
+    /**
+     * Get biomes in a chunk
+     *
+     * @param x Chunk X coord
+     * @param z Chunk Z coord
+     * @return BiomeHolder containing biomes.
+     */
     public BiomeHolder getBiomes(int x, int z) {
         BiomeHolder holder = new TerraBiomeHolder(init, new Vector2(x * (init - 1), z * (init - 1)));
         holder.fill(source);