PFEModder

Looks like I found a good example: https://gitlab.cameronwhyte.me/heroes-united/heroes-united/-/blob/master/src/main/java/xyz/heroesunited/heroesunited/HeroesUnited.java

SOLVED. Developers accepted pull request.

Please, update mods.toml: # This is an example mods.toml file. It contains the data relating to the loading mods. # There are several mandatory fields (#mandatory), and many more that are optional (#optional). # The overall format is standard TOML format, v0.5.0. # Note that there are a couple of TOML lists in this file. # Find more information on toml format here: https://github.com/toml-lang/toml # The name of the mod loader type to load - for regular FML @Mod mods it should be javafml modLoader="javafml" #mandatory # A version range to match for said mod loader - for regular FML @Mod it will be the forge version loaderVersion="[33,)" #mandatory This is typically bumped every Minecraft version by Forge. See our download page for lists of versions. # The license for you mod. This is mandatory metadata and allows for easier comprehension of your redistributive properties. # Review your options at https://choosealicense.com/. All rights reserved is the default copyright stance, and is thus the default here. license="All rights reserved" # A URL to refer people to when problems occur with this mod issueTrackerURL="http://my.issue.tracker/" #optional # A list of mods - how many allowed here is determined by the individual mod loader [[mods]] #mandatory # The modid of the mod modId="examplemod" #mandatory # The version number of the mod - there's a few well known ${} variables useable here or just hardcode it version="${file.jarVersion}" #mandatory # A display name for the mod displayName="Example Mod" #mandatory # A URL to query for updates for this mod. See the JSON update specification <here> updateJSONURL="http://myurl.me/" #optional # A URL for the "homepage" for this mod, displayed in the mod UI displayURL="http://example.com/" #optional # A file name (in the root of the mod JAR) containing a logo for display logoFile="examplemod.png" #optional # A text field displayed in the mod UI credits="Thanks for this example mod goes to Java" #optional # A text field displayed in the mod UI authors="Love, Cheese and small house plants" #optional # The description text for the mod (multi line!) (#mandatory) description=''' This is a long form description of the mod. You can write whatever you want here Have some lorem ipsum. Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed mollis lacinia magna. Orci varius natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus. Sed sagittis luctus odio eu tempus. Interdum et malesuada fames ac ante ipsum primis in faucibus. Pellentesque volutpat ligula eget lacus auctor sagittis. In hac habitasse platea dictumst. Nunc gravida elit vitae sem vehicula efficitur. Donec mattis ipsum et arcu lobortis, eleifend sagittis sem rutrum. Cras pharetra quam eget posuere fermentum. Sed id tincidunt justo. Lorem ipsum dolor sit amet, consectetur adipiscing elit. ''' # A dependency - use the . to indicate dependency for a specific modid. Dependencies are optional. [[dependencies.examplemod]] #optional # the modid of the dependency modId="forge" #mandatory # Does this dependency have to exist - if not, ordering below must be specified mandatory=true #mandatory # The version range of the dependency versionRange="[33,)" #mandatory # An ordering relationship for the dependency - BEFORE or AFTER required if the relationship is not mandatory ordering="NONE" # Side this dependency is applied on - BOTH, CLIENT or SERVER side="BOTH" # Here's another dependency [[dependencies.examplemod]] modId="minecraft" mandatory=true versionRange="[1.16.2]" ordering="NONE" side="BOTH" EDIT: I've made pull request

package com.twmicro.practical.world.gen.structures; import com.mojang.serialization.Codec; import com.twmicro.practical.PracticalMod; import com.twmicro.practical.Reference; import com.twmicro.practical.world.gen.structures.pieces.ModernRubyFactoryPiece; import net.minecraft.util.Rotation; import net.minecraft.util.SharedSeedRandom; import net.minecraft.util.math.BlockPos; import net.minecraft.util.math.ChunkPos; import net.minecraft.util.math.MutableBoundingBox; import net.minecraft.world.IWorldReader; import net.minecraft.world.biome.Biome; import net.minecraft.world.biome.provider.BiomeProvider; import net.minecraft.world.gen.ChunkGenerator; import net.minecraft.world.gen.GenerationStage; import net.minecraft.world.gen.feature.IFeatureConfig; import net.minecraft.world.gen.feature.NoFeatureConfig; import net.minecraft.world.gen.feature.structure.*; import net.minecraft.world.gen.feature.template.TemplateManager; import net.minecraft.world.gen.settings.StructureSeparationSettings; import javax.annotation.Nullable; public class ModernRubyFactory extends Structure<NoFeatureConfig> { public ModernRubyFactory(Codec<NoFeatureConfig> codec) { super(codec); } @Override public String getStructureName() { return Reference.MODERN_RUBY_FACTORY_LOCATION.toString(); } @Override public GenerationStage.Decoration func_236396_f_() { return GenerationStage.Decoration.SURFACE_STRUCTURES; } @Nullable @Override public BlockPos func_236388_a_(IWorldReader p_236388_1_, StructureManager p_236388_2_, BlockPos p_236388_3_, int p_236388_4_, boolean p_236388_5_, long p_236388_6_, StructureSeparationSettings p_236388_8_) { return super.func_236388_a_(p_236388_1_, p_236388_2_, p_236388_3_, p_236388_4_, p_236388_5_, p_236388_6_, p_236388_8_); } @Override public Structure.IStartFactory<NoFeatureConfig> getStartFactory() { return ModernRubyFactory.Start::new; } public static class Start extends StructureStart<NoFeatureConfig> { public Start(Structure<NoFeatureConfig> p_i225806_1_, int p_i225806_2_, int p_i225806_3_, MutableBoundingBox p_i225806_4_, int p_i225806_5_, long p_i225806_6_) { super(p_i225806_1_, p_i225806_2_, p_i225806_3_, p_i225806_4_, p_i225806_5_, p_i225806_6_); } @Override public void func_230364_a_(ChunkGenerator p_230364_1_, TemplateManager p_230364_2_, int p_230364_3_, int p_230364_4_, Biome p_230364_5_, NoFeatureConfig p_230364_6_) { int i = p_230364_3_ * 16; int j = p_230364_4_ * 16; BlockPos blockpos = new BlockPos(i, 90, j); Rotation rotation = Rotation.randomRotation(this.rand); ModernRubyFactoryPiece.func_236991_a_(p_230364_2_, blockpos, rotation, this.components, this.rand); this.recalculateStructureSize(); } } } First attempt xD. Please, don't care of name of structure! Also Minecraft writes to log two types of messages: [11:47:36] [Server thread/ERROR] [minecraft/ChunkManager]: Failed to save chunk -2,-1 java.lang.NullPointerException: null at net.minecraft.world.chunk.storage.ChunkSerializer.writeStructures(ChunkSerializer.java:421) ~[?:?] {re:classloading} at net.minecraft.world.chunk.storage.ChunkSerializer.write(ChunkSerializer.java:363) ~[?:?] {re:classloading} at net.minecraft.world.server.ChunkManager.func_219229_a(ChunkManager.java:705) ~[?:?] {re:classloading} at net.minecraft.world.server.ChunkManager.lambda$save$9(ChunkManager.java:374) ~[?:?] {re:classloading} at java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) ~[?:1.8.0_251] {} at java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:175) ~[?:1.8.0_251] {} at java.util.Iterator.forEachRemaining(Iterator.java:116) ~[?:1.8.0_251] {} at java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801) ~[?:1.8.0_251] {} at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:482) ~[?:1.8.0_251] {} at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:472) ~[?:1.8.0_251] {} at java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) ~[?:1.8.0_251] {} at java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) ~[?:1.8.0_251] {} at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) ~[?:1.8.0_251] {} at java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:418) ~[?:1.8.0_251] {} at net.minecraft.world.server.ChunkManager.save(ChunkManager.java:371) ~[?:?] {re:classloading} at net.minecraft.world.server.ServerChunkProvider.save(ServerChunkProvider.java:313) ~[?:?] {re:classloading,pl:accesstransformer:B} at net.minecraft.world.server.ServerWorld.save(ServerWorld.java:703) ~[?:?] {re:classloading} at net.minecraft.server.MinecraftServer.save(MinecraftServer.java:546) ~[?:?] {re:classloading,pl:accesstransformer:B} at net.minecraft.server.integrated.IntegratedServer.tick(IntegratedServer.java:82) ~[?:?] {re:classloading,pl:runtimedistcleaner:A} at net.minecraft.server.MinecraftServer.func_240802_v_(MinecraftServer.java:665) ~[?:?] {re:classloading,pl:accesstransformer:B} at net.minecraft.server.MinecraftServer.lambda$func_240784_a_$0(MinecraftServer.java:231) ~[?:?] {re:classloading,pl:accesstransformer:B} at java.lang.Thread.run(Thread.java:748) [?:1.8.0_251] {} Unknown structure start: practical:modern_ruby_factory

I think you don't need to replace vanilla files. View this topic.

How to add custom structure (I have nbt file in data/mymod/structures)? Can you give answer for 1.16.1, please?