Feature builder prototype

src/main/java/ru/bclib/api/features/BCLFeatureBuilder.java

@@ -0,0 +1,76 @@
+package ru.bclib.api.features;
+
+import net.minecraft.resources.ResourceLocation;
+import net.minecraft.world.level.levelgen.GenerationStep.Decoration;
+import net.minecraft.world.level.levelgen.feature.Feature;
+import net.minecraft.world.level.levelgen.feature.configurations.FeatureConfiguration;
+import net.minecraft.world.level.levelgen.placement.PlacedFeature;
+import net.minecraft.world.level.levelgen.placement.PlacementModifier;
+import ru.bclib.world.features.BCLFeature;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class BCLFeatureBuilder {
+	private static final BCLFeatureBuilder INSTANCE = new BCLFeatureBuilder();
+	private List<PlacementModifier> modifications = new ArrayList<>(16);
+	private ResourceLocation featureID;
+	private Decoration decoration;
+	private Feature<?> feature;
+	
+	private BCLFeatureBuilder() {}
+	
+	/**
+	 * Starts a new {@link BCLFeature} builder.
+	 * @param featureID {@link ResourceLocation} feature identifier.
+	 * @param feature {@link Feature} to construct.
+	 * @return {@link BCLFeatureBuilder} instance.
+	 */
+	public static BCLFeatureBuilder start(ResourceLocation featureID, Feature<?> feature) {
+		INSTANCE.decoration = Decoration.VEGETAL_DECORATION;
+		INSTANCE.modifications.clear();
+		INSTANCE.featureID = featureID;
+		INSTANCE.feature = feature;
+		return INSTANCE;
+	}
+	
+	/**
+	 * Set generation step for the feature. Default is {@code VEGETAL_DECORATION}.
+	 * @param decoration {@link Decoration} step.
+	 * @return same {@link BCLFeatureBuilder} instance.
+	 */
+	public BCLFeatureBuilder decoration(Decoration decoration) {
+		this.decoration = decoration;
+		return this;
+	}
+	
+	/**
+	 * Add feature placement modifier. Used as a condition for feature how to generate.
+	 * @param modifier {@link PlacementModifier}.
+	 * @return same {@link BCLFeatureBuilder} instance.
+	 */
+	public BCLFeatureBuilder modifier(PlacementModifier modifier) {
+		modifications.add(modifier);
+		return this;
+	}
+	
+	/**
+	 * Builds a new {@link BCLFeature} instance. Features will be registered during this process.
+	 * @param configuration any {@link FeatureConfiguration} for provided {@link Feature}.
+	 * @return created {@link BCLFeature} instance.
+	 */
+	public <FC extends FeatureConfiguration> BCLFeature build(FC configuration) {
+		PlacementModifier [] modifiers = modifications.toArray(new PlacementModifier [modifications.size()]);
+		PlacedFeature configured = ((Feature<FC>) feature).configured(configuration).placed(modifiers);
+		return new BCLFeature(featureID, feature, decoration, configured);
+	}
+	
+	/**
+	 * Builds a new {@link BCLFeature} instance with {@code NONE} {@link FeatureConfiguration}.
+	 * Features will be registered during this process.
+	 * @return created {@link BCLFeature} instance.
+	 */
+	public BCLFeature build() {
+		return build(FeatureConfiguration.NONE);
+	}
+}

src/main/java/ru/bclib/world/features/BCLFeature.java

@@ -33,7 +33,7 @@ public class BCLFeature {
 		this.feature = feature;
 	}
 	
-	public BCLFeature(ResourceLocation id, Feature<NoneFeatureConfiguration> feature, Decoration featureStep, PlacedFeature placedFeature) {
+	public BCLFeature(ResourceLocation id, Feature<?> feature, Decoration featureStep, PlacedFeature placedFeature) {
 		this.placedFeature = Registry.register(BuiltinRegistries.PLACED_FEATURE, id, placedFeature);
 		this.feature = Registry.register(Registry.FEATURE, id, feature);
 		this.featureStep = featureStep;