Add KubeJS API for casings to easily imitate blocks (#697)

docs/ADDING_MACHINES.md

@@ -316,14 +316,22 @@ Methods that config exposes:
 
 ## Adding new casing types
 See [MACHINE_MODELS.md](MACHINE_MODELS.md) for an explanation of machine models and what casings are.
-You can add new casings using the `register` function in the `MIMachineEvents.registerCasings` event.
+You can add new casings using the `MIMachineEvents.registerCasings` event.
+- Use the `register` function if you will also be adding a JSON model for the casing.
+- Use the `registerBlockImitation` function to add a casing that will imitate another block.
 
-Remember that the top, side and bottom textures of a casing must be `modern_industrialization:textures/block/casings/<casing name>/{top,side,bottom}.png`.
+If you use `register` and want a texture-based casing model,
+remember that the top, side and bottom textures of a casing must be `modern_industrialization:textures/block/casings/<casing name>/{top,side,bottom}.png`.
 
-For example, to register two new casings:
+For example:
 ```js
 MIMachineEvents.registerCasings(event => {
+    // Register two casings.
+    // This doesn't register any model! Either add models or add the top/side/bottom textures.
     event.register("my_fancy_casing", "my_other_casing");
+
+    // This registers a new casing with the same model as a diamond block!
+    event.registerBlockImitation("my_diamond_casing", "minecraft:diamond_block");
 })
 ```
 
@@ -393,4 +401,4 @@ MIMachineEvents.registerMachines(event => {
         true, false, false // front overlay?, top overlay?, side overlay?
     );
 });
-```
+```

src/client/java/aztech/modern_industrialization/datagen/model/MachineCasingsProvider.java

@@ -37,8 +37,10 @@
 import java.util.function.BiConsumer;
 import net.fabricmc.fabric.api.datagen.v1.FabricDataOutput;
 import net.minecraft.core.registries.BuiltInRegistries;
+import net.minecraft.core.registries.Registries;
 import net.minecraft.data.CachedOutput;
 import net.minecraft.data.DataProvider;
+import net.minecraft.resources.ResourceKey;
 import net.minecraft.world.level.block.Block;
 import net.minecraft.world.level.block.Blocks;
 
@@ -91,6 +93,10 @@ private void generate(BiConsumer<MachineCasing, Block> imitateBlock) {
         imitateBlock.accept(MachineCasings.SOLID_TITANIUM, MIMaterials.TITANIUM.getPart(MIParts.MACHINE_CASING_SPECIAL).asBlock());
         imitateBlock.accept(MachineCasings.NUCLEAR, MIMaterials.NUCLEAR_ALLOY.getPart(MIParts.MACHINE_CASING_SPECIAL).asBlock());
         imitateBlock.accept(MachineCasings.PLASMA_HANDLING_IRIDIUM, MIMaterials.IRIDIUM.getPart(MIParts.MACHINE_CASING_SPECIAL).asBlock());
+
+        for (var entry : MachineCasingImitations.imitationsToGenerate.entrySet()) {
+            imitateBlock.accept(entry.getKey(), BuiltInRegistries.BLOCK.getOrThrow(ResourceKey.create(Registries.BLOCK, entry.getValue())));
+        }
     }
 
     @Override

src/main/java/aztech/modern_industrialization/compat/kubejs/machine/RegisterCasingsEventJS.java

@@ -23,8 +23,11 @@
  */
 package aztech.modern_industrialization.compat.kubejs.machine;
 
+import aztech.modern_industrialization.datagen.model.MachineCasingImitations;
 import aztech.modern_industrialization.machines.models.MachineCasings;
 import dev.latvian.mods.kubejs.event.EventJS;
+import java.util.Objects;
+import net.minecraft.resources.ResourceLocation;
 
 public class RegisterCasingsEventJS extends EventJS {
     public void register(String... names) {
@@ -36,4 +39,13 @@ public void register(String... names) {
             MachineCasings.create(name);
         }
     }
+
+    public void registerBlockImitation(String name, ResourceLocation block) {
+        Objects.requireNonNull(block, "block may not be null");
+        if (name.contains(":")) {
+            throw new IllegalArgumentException("Casing name cannot contain ':'.");
+        }
+
+        MachineCasingImitations.imitationsToGenerate.put(MachineCasings.create(name), block);
+    }
 }

src/main/java/aztech/modern_industrialization/datagen/model/MachineCasingImitations.java

@@ -0,0 +1,33 @@
+/*
+ * MIT License
+ *
+ * Copyright (c) 2020 Azercoco & Technici4n
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+package aztech.modern_industrialization.datagen.model;
+
+import aztech.modern_industrialization.machines.models.MachineCasing;
+import java.util.HashMap;
+import java.util.Map;
+import net.minecraft.resources.ResourceLocation;
+
+public class MachineCasingImitations {
+    public static final Map<MachineCasing, ResourceLocation> imitationsToGenerate = new HashMap<>();
+}