Initial commit

common/addons/biome-provider-image/README.md

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+# biome-provider-image
+
+Implements and registers the `IMAGE` biome provider, a biome provider which
+generates biomes from an image, using the `color` attribute of biomes.
+
+This addon registers the provider type, and all associated config options.

common/addons/biome-provider-image/build.gradle.kts

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+dependencies {
+}

common/addons/biome-provider-image/src/main/java/com/dfsek/terra/addons/biome/image/ImageBiomeProvider.java

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+package com.dfsek.terra.addons.biome.image;
+
+import net.jafama.FastMath;
+
+import java.awt.Color;
+import java.awt.image.BufferedImage;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Set;
+
+import com.dfsek.terra.api.world.biome.TerraBiome;
+import com.dfsek.terra.api.world.biome.generation.BiomeProvider;
+
+
+public class ImageBiomeProvider implements BiomeProvider {
+    private final Map<Color, TerraBiome> colorBiomeMap = new HashMap<>();
+    private final BufferedImage image;
+    private final int resolution;
+    private final Align align;
+    
+    public ImageBiomeProvider(Set<TerraBiome> registry, BufferedImage image, int resolution, Align align) {
+        this.image = image;
+        this.resolution = resolution;
+        this.align = align;
+        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, long seed) {
+        x /= resolution;
+        z /= resolution;
+        Color color = align.getColor(image, x, z);
+        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 enum Align {
+        CENTER {
+            @Override
+            public Color getColor(BufferedImage image, int x, int z) {
+                return new Color(image.getRGB(FastMath.floorMod(x - image.getWidth() / 2, image.getWidth()),
+                                              FastMath.floorMod(z - image.getHeight() / 2, image.getHeight())));
+            }
+        },
+        NONE {
+            @Override
+            public Color getColor(BufferedImage image, int x, int z) {
+                return new Color(image.getRGB(FastMath.floorMod(x, image.getWidth()), FastMath.floorMod(z, image.getHeight())));
+            }
+        };
+        
+        public abstract Color getColor(BufferedImage image, int x, int z);
+    }
+}

common/addons/biome-provider-image/src/main/java/com/dfsek/terra/addons/biome/image/ImageBiomeProviderAddon.java

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+package com.dfsek.terra.addons.biome.image;
+
+import com.dfsek.tectonic.loading.object.ObjectTemplate;
+
+import java.util.function.Supplier;
+
+import com.dfsek.terra.api.Platform;
+import com.dfsek.terra.api.addon.TerraAddon;
+import com.dfsek.terra.api.addon.annotations.Addon;
+import com.dfsek.terra.api.addon.annotations.Author;
+import com.dfsek.terra.api.addon.annotations.Version;
+import com.dfsek.terra.api.event.events.config.pack.ConfigPackPreLoadEvent;
+import com.dfsek.terra.api.event.functional.FunctionalEventHandler;
+import com.dfsek.terra.api.inject.annotations.Inject;
+import com.dfsek.terra.api.registry.CheckedRegistry;
+import com.dfsek.terra.api.util.reflection.TypeKey;
+import com.dfsek.terra.api.world.biome.TerraBiome;
+import com.dfsek.terra.api.world.biome.generation.BiomeProvider;
+
+
+@Addon("biome-provider-image")
+@Author("Terra")
+@Version("1.0.0")
+public class ImageBiomeProviderAddon extends TerraAddon {
+    public static final TypeKey<Supplier<ObjectTemplate<BiomeProvider>>> PROVIDER_REGISTRY_KEY = new TypeKey<>() {
+    };
+    
+    @Inject
+    private Platform platform;
+    
+    @Override
+    public void initialize() {
+        platform.getEventManager()
+                .getHandler(FunctionalEventHandler.class)
+                .register(this, ConfigPackPreLoadEvent.class)
+                .then(event -> {
+                    CheckedRegistry<Supplier<ObjectTemplate<BiomeProvider>>> providerRegistry = event.getPack().getOrCreateRegistry(
+                            PROVIDER_REGISTRY_KEY);
+                    providerRegistry.register("IMAGE", () -> new ImageProviderTemplate(event.getPack().getRegistry(TerraBiome.class)));
+                })
+                .failThrough();
+    }
+}

common/addons/biome-provider-image/src/main/java/com/dfsek/terra/addons/biome/image/ImageProviderTemplate.java

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+package com.dfsek.terra.addons.biome.image;
+
+import com.dfsek.tectonic.annotations.Default;
+import com.dfsek.tectonic.annotations.Value;
+import com.dfsek.tectonic.loading.object.ObjectTemplate;
+
+import java.awt.image.BufferedImage;
+import java.util.HashSet;
+
+import com.dfsek.terra.api.registry.Registry;
+import com.dfsek.terra.api.world.biome.TerraBiome;
+import com.dfsek.terra.api.world.biome.generation.BiomeProvider;
+
+
+public class ImageProviderTemplate implements ObjectTemplate<BiomeProvider> {
+    private final Registry<TerraBiome> biomes;
+    @Value("resolution")
+    @Default
+    private int resolution = 1;
+    @Value("image.name")
+    private BufferedImage image;
+    @Value("image.align")
+    private ImageBiomeProvider.Align align;
+    
+    public ImageProviderTemplate(Registry<TerraBiome> set) {
+        this.biomes = set;
+    }
+    
+    @Override
+    public BiomeProvider get() {
+        return new ImageBiomeProvider(new HashSet<>(biomes.entries()), image, resolution, align);
+    }
+}