Data Gen API 1.13+

libraries/datagen/README.md

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+# Data Generator API
+
+The Data Generator API is a library that provides a simple and intuitive way to generate data files for Minecraft mods. 
+It allows mod developers to easily create block models, item models, and other data files without having to manually write JSON files.
+
+## Registering Data Generators
+### Entrypoint
+
+The Data Generator API provides an entrypoint that allows mod developers to register their data generators. 
+This entrypoint is used to register the data generators that will be used to generate the data files for the mod.
+
+An example is shown below.
+
+`fabric.mod.json`
+```json
+{
+  ...
+  "entrypoints": {
+    ...
+    "datagen": [
+      "com.example.ExampleDataGenerator"
+    ],
+    ...
+  },
+  ...
+}
+```
+
+```java
+package com.example;
+
+import net.ornithemc.osl.datagen.api.DataGeneratorInitializer;
+
+public class ExampleDataGenerator implements DataGeneratorInitializer {
+    @Override
+    public void onDatagenInit(ModDataGenerator dataGenerator) {
+        PackGenerator pack = dataGenerator.createPack();
+        pack.addProvider(ExampleModelProvider::new);
+    }
+}
+```
+
+### Mod Data Providers
+
+Mod data providers are used to provide data to the pack generator.
+There are a few builtin providers, such as the model provider, and language provider.
+
+An example for the model provider is shown below.
+
+```java
+package com.example;
+
+public class ExampleModelProvider extends ModModelProvider {
+    public ExampleModelProvider(PackGenerator generator, ModContainer mod) {
+        super(generator, mod);
+    }
+
+    public void generateModels(ModelGenerator generator) {
+        BlockModelTemplates templates = generator.blockTemplates();
+        templates.simpleBlock(Blocks.OAK_PLANKS, block("oak_planks"));
+    }
+}
+```
+
+Vanilla DataProviders can also be extended to provide data such as tags.
+In the extended constructor, replace DataGenerator with PackGenerator and upcast it back to DataGenerator.

libraries/datagen/build.gradle

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+setUpLibrary(project)
+
+dependencies {
+    implementation 'com.google.code.gson:gson:2.8.0'
+    implementation 'com.google.guava:guava:17.0'
+}

libraries/datagen/datagen-mc1.13-pre6-mc18w31a/build.gradle

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+setUpModule(project)

libraries/datagen/datagen-mc1.13-pre6-mc18w31a/gradle.properties

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+min_mc_version = 1.13-pre6
+max_mc_version = 18w31a
+
+minecraft_version = 1.13

libraries/datagen/datagen-mc1.13-pre6-mc18w31a/src/main/java/net/ornithemc/osl/datagen/api/model/ModelBuilder.java

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+package net.ornithemc.osl.datagen.api.model;
+
+import com.google.common.collect.Maps;
+import com.google.gson.JsonObject;
+import net.ornithemc.osl.core.api.util.NamespacedIdentifier;
+
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ * Represents a block or item model.
+ */
+public class ModelBuilder {
+    private NamespacedIdentifier parent;
+    private Map<String, NamespacedIdentifier> textures = Maps.newLinkedHashMap();
+
+    /**
+     * Creates a new model builder.
+     *
+     * @return the model builder
+     */
+    public static ModelBuilder create() {
+        return new ModelBuilder();
+    }
+
+    /**
+     * Creates a new model builder with the given parent.
+     *
+     * @param parent the parent model
+     * @return the model builder
+     */
+    public static ModelBuilder create(NamespacedIdentifier parent) {
+        return new ModelBuilder().parent(parent);
+    }
+
+    /**
+     * Sets the parent model.
+     *
+     * @param parent the parent model
+     * @return the model builder
+     */
+    public ModelBuilder parent(NamespacedIdentifier parent) {
+        this.parent = parent;
+        return this;
+    }
+
+    /**
+     * Sets the texture path for the given name.
+     *
+     * @param name the name of the texture
+     * @param texture the texture path
+     * @return the model builder
+     */
+    public ModelBuilder texture(String name, NamespacedIdentifier texture) {
+        this.textures.put(name, texture);
+        return this;
+    }
+
+    public JsonObject build() {
+        JsonObject model = new JsonObject();
+
+        if (parent != null) {
+            model.addProperty("parent", parent.toString());
+        }
+
+        if (!textures.isEmpty()) {
+            JsonObject texturesJson = new JsonObject();
+            for (Map.Entry<String, NamespacedIdentifier> entry : textures.entrySet()) {
+                texturesJson.addProperty(entry.getKey(), entry.getValue().toString());
+            }
+            model.add("textures", texturesJson);
+        }
+
+        return model;
+    }
+}

libraries/datagen/datagen-mc1.13-pre6-mc18w31a/src/main/java/net/ornithemc/osl/datagen/api/model/ModelGenerator.java

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+package net.ornithemc.osl.datagen.api.model;
+
+import net.minecraft.block.Block;
+import net.minecraft.item.ItemLike;
+import net.ornithemc.osl.core.api.util.NamespacedIdentifier;
+import net.ornithemc.osl.datagen.api.model.block.BlockModelDefinitionBuilder;
+import net.ornithemc.osl.datagen.api.model.block.BlockModelTemplates;
+
+/**
+ * Provides methods for generating model resources.
+ */
+public interface ModelGenerator {
+    /**
+     * Generates a blockstate file for the given block.
+     *
+     * @param block the block to generate the blockstate for
+     * @param builder the builder to use for generating the blockstate
+     */
+    void blockstate(Block block, BlockModelDefinitionBuilder builder);
+
+    /**
+     * Generates an item model file for the given item or block item.
+     *
+     * @param item the item to generate the item model for
+     * @param builder the builder to use for generating the item model
+     */
+    void itemModel(ItemLike item, ModelBuilder builder);
+
+    /**
+     * Generates a block model file for the given identifier.
+     *
+     * @param identifier the identifier to generate the block model for
+     * @param builder the builder to use for generating the block model
+     * @return the generated block model identifier
+     */
+    NamespacedIdentifier blockModel(NamespacedIdentifier identifier, ModelBuilder builder);
+
+    /**
+     * Generates a block model file for the given block.
+     *
+     * @param block the block to generate the block model for
+     * @param builder the builder to use for generating the block model
+     * @return the generated block model identifier
+     */
+    NamespacedIdentifier blockModel(Block block, ModelBuilder builder);
+
+    /**
+     * Generates a block model file for the given block with the given suffix.
+     *
+     * @param block the block to generate the block model for
+     * @param suffix the suffix to append to the block model identifier
+     * @param builder the builder to use for generating the block model
+     * @return the generated block model identifier
+     */
+    NamespacedIdentifier blockModel(Block block, String suffix, ModelBuilder builder);
+
+    /**
+     * Returns the block model templates.
+     *
+     * @return the block model templates
+     */
+    BlockModelTemplates blockTemplates();
+}