Add an ore to the biome test mod (#3721)

fabric-biome-api-v1/src/testmod/generated/data/fabric-biome-api-v1-testmod/worldgen/configured_feature/common_ore.json

@@ -0,0 +1,18 @@
+{
+  "type": "minecraft:ore",
+  "config": {
+    "discard_chance_on_air_exposure": 0.0,
+    "size": 5,
+    "targets": [
+      {
+        "state": {
+          "Name": "minecraft:diamond_block"
+        },
+        "target": {
+          "predicate_type": "minecraft:tag_match",
+          "tag": "minecraft:stone_ore_replaceables"
+        }
+      }
+    ]
+  }
+}

fabric-biome-api-v1/src/testmod/generated/data/fabric-biome-api-v1-testmod/worldgen/placed_feature/common_ore.json

@@ -0,0 +1,21 @@
+{
+  "feature": "fabric-biome-api-v1-testmod:common_ore",
+  "placement": [
+    {
+      "type": "minecraft:count",
+      "count": 25
+    },
+    {
+      "type": "minecraft:height_range",
+      "height": {
+        "type": "minecraft:uniform",
+        "max_inclusive": {
+          "below_top": 0
+        },
+        "min_inclusive": {
+          "above_bottom": 0
+        }
+      }
+    }
+  ]
+}

fabric-biome-api-v1/src/testmod/java/net/fabricmc/fabric/test/biome/DataGeneratorEntrypoint.java

@@ -16,19 +16,26 @@
 
 package net.fabricmc.fabric.test.biome;
 
+import net.minecraft.block.Blocks;
 import net.minecraft.registry.Registerable;
 import net.minecraft.registry.RegistryBuilder;
 import net.minecraft.registry.RegistryEntryLookup;
 import net.minecraft.registry.RegistryKey;
 import net.minecraft.registry.RegistryKeys;
 import net.minecraft.registry.entry.RegistryEntry;
+import net.minecraft.registry.tag.BlockTags;
+import net.minecraft.structure.rule.TagMatchRuleTest;
 import net.minecraft.util.Identifier;
+import net.minecraft.world.gen.YOffset;
 import net.minecraft.world.gen.feature.ConfiguredFeature;
 import net.minecraft.world.gen.feature.ConfiguredFeatures;
 import net.minecraft.world.gen.feature.Feature;
+import net.minecraft.world.gen.feature.OreFeatureConfig;
 import net.minecraft.world.gen.feature.PlacedFeature;
 import net.minecraft.world.gen.feature.PlacedFeatures;
 import net.minecraft.world.gen.placementmodifier.BiomePlacementModifier;
+import net.minecraft.world.gen.placementmodifier.CountPlacementModifier;
+import net.minecraft.world.gen.placementmodifier.HeightRangePlacementModifier;
 import net.minecraft.world.gen.placementmodifier.SquarePlacementModifier;
 
 import net.fabricmc.fabric.api.datagen.v1.FabricDataGenerator;
@@ -42,6 +49,14 @@ public class DataGeneratorEntrypoint implements net.fabricmc.fabric.api.datagen.
 			RegistryKeys.PLACED_FEATURE,
 			new Identifier(FabricBiomeTest.MOD_ID, "fab_desert_well")
 	);
+	public static final RegistryKey<ConfiguredFeature<?, ?>> COMMON_ORE = RegistryKey.of(
+			RegistryKeys.CONFIGURED_FEATURE,
+			new Identifier(FabricBiomeTest.MOD_ID, "common_ore")
+	);
+	public static final RegistryKey<PlacedFeature> PLACED_COMMON_ORE = RegistryKey.of(
+			RegistryKeys.PLACED_FEATURE,
+			new Identifier(FabricBiomeTest.MOD_ID, "common_ore")
+	);
 
 	@Override
 	public void onInitializeDataGenerator(FabricDataGenerator dataGenerator) {
@@ -59,6 +74,9 @@ public class DataGeneratorEntrypoint implements net.fabricmc.fabric.api.datagen.
 
 	private void bootstrapConfiguredFeatures(Registerable<ConfiguredFeature<?, ?>> registerable) {
 		ConfiguredFeatures.register(registerable, COMMON_DESERT_WELL, Feature.DESERT_WELL);
+
+		OreFeatureConfig featureConfig = new OreFeatureConfig(new TagMatchRuleTest(BlockTags.STONE_ORE_REPLACEABLES), Blocks.DIAMOND_BLOCK.getDefaultState(), 5);
+		ConfiguredFeatures.register(registerable, COMMON_ORE, Feature.ORE, featureConfig);
 	}
 
 	private void bootstrapPlacedFeatures(Registerable<PlacedFeature> registerable) {
@@ -71,5 +89,13 @@ public class DataGeneratorEntrypoint implements net.fabricmc.fabric.api.datagen.
 				PlacedFeatures.MOTION_BLOCKING_HEIGHTMAP,
 				BiomePlacementModifier.of()
 		);
+
+		PlacedFeatures.register(registerable, PLACED_COMMON_ORE, configuredFeatures.getOrThrow(COMMON_ORE),
+				CountPlacementModifier.of(25),
+				HeightRangePlacementModifier.uniform(
+					YOffset.BOTTOM,
+					YOffset.TOP
+				)
+		);
 	}
 }

fabric-biome-api-v1/src/testmod/java/net/fabricmc/fabric/test/biome/FabricBiomeTest.java

@@ -17,6 +17,7 @@
 package net.fabricmc.fabric.test.biome;
 
 import static net.fabricmc.fabric.test.biome.DataGeneratorEntrypoint.PLACED_COMMON_DESERT_WELL;
+import static net.fabricmc.fabric.test.biome.DataGeneratorEntrypoint.PLACED_COMMON_ORE;
 
 import com.google.common.base.Preconditions;
 
@@ -78,7 +79,10 @@ public class FabricBiomeTest implements ModInitializer {
 						})
 				.add(ModificationPhase.ADDITIONS,
 						BiomeSelectors.tag(TagKey.of(RegistryKeys.BIOME, new Identifier(MOD_ID, "tag_selector_test"))),
-						context -> context.getEffects().setSkyColor(0x770000));
+						context -> context.getEffects().setSkyColor(0x770000))
+				.add(ModificationPhase.ADDITIONS, BiomeSelectors.foundInOverworld(), context ->
+						context.getGenerationSettings().addFeature(GenerationStep.Feature.UNDERGROUND_ORES, PLACED_COMMON_ORE)
+				);
 
 		// Make sure data packs can define dynamic registry contents
 		// See #2225, #2261

fabric-biome-api-v1/src/testmod/java/net/fabricmc/fabric/test/biome/WorldgenProvider.java

@@ -32,8 +32,8 @@ public class WorldgenProvider extends FabricDynamicRegistryProvider {
 	@Override
 	protected void configure(RegistryWrapper.WrapperLookup registries, Entries entries) {
 		entries.addAll(registries.getWrapperOrThrow(RegistryKeys.BIOME));
-		entries.add(registries.getWrapperOrThrow(RegistryKeys.CONFIGURED_FEATURE), DataGeneratorEntrypoint.COMMON_DESERT_WELL);
+		entries.addAll(registries.getWrapperOrThrow(RegistryKeys.PLACED_FEATURE));
-		entries.add(registries.getWrapperOrThrow(RegistryKeys.PLACED_FEATURE), DataGeneratorEntrypoint.PLACED_COMMON_DESERT_WELL);
+		entries.addAll(registries.getWrapperOrThrow(RegistryKeys.CONFIGURED_FEATURE));
 	}
 
 	@Override