Show targeted multipart in debug HUD

src/main/java/net/shadowfacts/simplemultipart/mixin/client/MixinDebugHud.java

@@ -0,0 +1,58 @@
+package net.shadowfacts.simplemultipart.mixin.client;
+
+import net.minecraft.block.entity.BlockEntity;
+import net.minecraft.client.MinecraftClient;
+import net.minecraft.client.gui.hud.DebugHud;
+import net.minecraft.state.property.Property;
+import net.minecraft.util.HitResult;
+import net.shadowfacts.simplemultipart.SimpleMultipart;
+import net.shadowfacts.simplemultipart.container.MultipartContainer;
+import net.shadowfacts.simplemultipart.multipart.Multipart;
+import net.shadowfacts.simplemultipart.multipart.MultipartState;
+import net.shadowfacts.simplemultipart.util.MultipartHelper;
+import net.shadowfacts.simplemultipart.util.MultipartHitResult;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Shadow;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;
+
+import java.util.List;
+import java.util.Map;
+
+/**
+ * @author shadowfacts
+ */
+@Mixin(DebugHud.class)
+public abstract class MixinDebugHud {
+
+	@Shadow
+	private MinecraftClient client;
+	@Shadow
+	private HitResult blockHit;
+
+	@Shadow
+	public abstract String method_1845(Map.Entry<Property<?>, Comparable<?>> map$Entry_1);
+
+	@Inject(method = "method_1839", at = @At("RETURN"))
+	public void method_1839(CallbackInfoReturnable<List<String>> info) {
+		if (!client.hasReducedDebugInfo() && blockHit != null && blockHit.type == HitResult.Type.BLOCK) {
+			BlockEntity entity = client.world.getBlockEntity(blockHit.getBlockPos());
+			if (entity instanceof MultipartContainer) {
+				MultipartContainer container = (MultipartContainer)entity;
+				MultipartHitResult result = MultipartHelper.rayTrace(container, client.world, blockHit.getBlockPos(), client.player);
+				if (result != null && result.view != null) {
+					info.getReturnValue().add("");
+					info.getReturnValue().add("Targeted Multipart");
+					MultipartState state = result.view.getState();
+					Multipart part = state.getMultipart();
+					info.getReturnValue().add(String.valueOf(SimpleMultipart.MULTIPART.getId(part)));
+					for (Map.Entry<Property<?>, Comparable<?>> e : state.getEntries().entrySet()) {
+						info.getReturnValue().add(method_1845(e));
+					}
+				}
+			}
+		}
+	}
+
+}

src/main/resources/simplemultipart.client.json

@@ -4,6 +4,7 @@
   "compatibilityLevel": "JAVA_8",
   "mixins": [
     "MixinBlockRenderManager",
+    "MixinDebugHud",
     "MixinModelLoader"
   ],
   "injectors": {