Expose the machine that a crafting interface targets

src/main/java/org/cyclops/integratedcrafting/api/crafting/ICraftingInterface.java

@@ -3,6 +3,7 @@
 import org.cyclops.commoncapabilities.api.capability.recipehandler.IRecipeDefinition;
 import org.cyclops.commoncapabilities.api.ingredient.IPrototypedIngredient;
 import org.cyclops.commoncapabilities.api.ingredient.IngredientComponent;
+import net.minecraft.world.item.ItemStack;
 import org.cyclops.commoncapabilities.api.ingredient.storage.IIngredientComponentStorage;
 import org.cyclops.integratedcrafting.api.network.ICraftingNetwork;
 import org.cyclops.integrateddynamics.api.part.PrioritizedPartPos;
@@ -101,6 +102,14 @@ public interface ICraftingInterface {
      */
     public PrioritizedPartPos getPosition();
 
+    /**
+     * @return An item representation of the machine that this interface is targeting,
+     *         or an empty stack if the machine is unknown or its position is not loaded.
+     */
+    public default ItemStack getTargetMachineItem() {
+        return ItemStack.EMPTY;
+    }
+
     public static Comparator<ICraftingInterface> createComparator() {
         return Comparator.comparing(ICraftingInterface::getPosition);
     }

src/main/java/org/cyclops/integratedcrafting/core/part/PartTypeInterfaceCraftingBase.java

@@ -9,7 +9,9 @@
 import net.minecraft.resources.ResourceLocation;
 import net.minecraft.world.entity.player.Player;
 import net.minecraft.world.item.ItemStack;
+import net.minecraft.world.level.Level;
 import org.cyclops.commoncapabilities.api.capability.recipehandler.IRecipeDefinition;
+import org.cyclops.cyclopscore.datastructure.DimPos;
 import org.cyclops.commoncapabilities.api.ingredient.IPrototypedIngredient;
 import org.cyclops.commoncapabilities.api.ingredient.IngredientComponent;
 import org.cyclops.commoncapabilities.api.ingredient.IngredientInstanceWrapper;
@@ -394,6 +396,20 @@ public PrioritizedPartPos getPosition() {
             return PrioritizedPartPos.of(getTarget().getCenter(), getPriority());
         }
 
+        @Override
+        public ItemStack getTargetMachineItem() {
+            PartTarget target = getTarget();
+            if (target == null) {
+                return ItemStack.EMPTY;
+            }
+            DimPos dimPos = target.getTarget().getPos();
+            if (!dimPos.isLoaded()) {
+                return ItemStack.EMPTY;
+            }
+            Level level = dimPos.getLevel(false);
+            return new ItemStack(level.getBlockState(dimPos.getBlockPos()).getBlock());
+        }
+
         public CraftingJobHandler getCraftingJobHandler() {
             return craftingJobHandler;
         }

src/main/java/org/cyclops/integratedcrafting/gametest/GameTestsCraftingInterfaceTargetMachine.java

@@ -0,0 +1,59 @@
+package org.cyclops.integratedcrafting.gametest;
+
+import net.minecraft.core.BlockPos;
+import net.minecraft.gametest.framework.GameTest;
+import net.minecraft.gametest.framework.GameTestHelper;
+import net.minecraft.world.item.Item;
+import net.minecraft.world.item.ItemStack;
+import net.minecraft.world.item.Items;
+import net.minecraft.world.level.block.Block;
+import net.minecraft.world.level.block.Blocks;
+import net.neoforged.neoforge.gametest.GameTestHolder;
+import net.neoforged.neoforge.gametest.PrefixGameTestTemplate;
+import org.cyclops.integratedcrafting.Reference;
+import org.cyclops.integratedcrafting.core.part.PartTypeInterfaceCraftingBase;
+
+import static org.cyclops.integratedcrafting.gametest.GameTestHelpersIntegratedCrafting.*;
+
+/**
+ * Game tests for the machine that crafting interfaces are targeting.
+ * @author rubensworks
+ */
+@GameTestHolder(Reference.MOD_ID)
+@PrefixGameTestTemplate(false)
+public class GameTestsCraftingInterfaceTargetMachine {
+
+    public static final String TEMPLATE_EMPTY = "empty10";
+    public static final int TIMEOUT = 2000;
+    public static final BlockPos POS = BlockPos.ZERO.offset(2, 0, 2);
+
+    protected void testTargetMachineItem(GameTestHelper helper, boolean attuned, Block crafter, Item expectedItem) {
+        INetworkPositions<PartTypeInterfaceCraftingBase.State<?, ?>> positions = createBasicNetwork(helper, POS, attuned, crafter);
+
+        helper.succeedWhen(() -> {
+            ItemStack machineItem = positions.interfaceStates().get(0).getTargetMachineItem();
+            helper.assertValueEqual(machineItem.getItem(), expectedItem, "Target machine item is incorrect");
+        });
+    }
+
+    @GameTest(template = TEMPLATE_EMPTY, timeoutTicks = TIMEOUT)
+    public void testTargetMachineItemCraftingTable(GameTestHelper helper) {
+        testTargetMachineItem(helper, false, Blocks.CRAFTING_TABLE, Items.CRAFTING_TABLE);
+    }
+
+    @GameTest(template = TEMPLATE_EMPTY, timeoutTicks = TIMEOUT)
+    public void testTargetMachineItemFurnace(GameTestHelper helper) {
+        testTargetMachineItem(helper, false, Blocks.FURNACE, Items.FURNACE);
+    }
+
+    @GameTest(template = TEMPLATE_EMPTY, timeoutTicks = TIMEOUT)
+    public void testTargetMachineItemAttunedCraftingTable(GameTestHelper helper) {
+        testTargetMachineItem(helper, true, Blocks.CRAFTING_TABLE, Items.CRAFTING_TABLE);
+    }
+
+    @GameTest(template = TEMPLATE_EMPTY, timeoutTicks = TIMEOUT)
+    public void testTargetMachineItemAttunedFurnace(GameTestHelper helper) {
+        testTargetMachineItem(helper, true, Blocks.FURNACE, Items.FURNACE);
+    }
+
+}