Basic framework for vacuum arc furnace multiblock. Moved multiblock methods to MultiblockHelper.

src/main/java/net/xevianlight/aphelion/block/custom/ArcFurnaceCasingBlock.java

@@ -2,6 +2,11 @@ package net.xevianlight.aphelion.block.custom;
 
 import com.mojang.serialization.MapCodec;
 import net.minecraft.core.BlockPos;
+import net.minecraft.network.chat.Component;
+import net.minecraft.server.level.ServerPlayer;
+import net.minecraft.world.InteractionResult;
+import net.minecraft.world.SimpleMenuProvider;
+import net.minecraft.world.entity.player.Player;
 import net.minecraft.world.item.Item;
 import net.minecraft.world.item.context.BlockPlaceContext;
 import net.minecraft.world.level.Level;
@@ -13,13 +18,17 @@ import net.minecraft.world.level.block.entity.BlockEntity;
 import net.minecraft.world.level.block.state.BlockState;
 import net.minecraft.world.level.block.state.StateDefinition;
 import net.minecraft.world.level.block.state.properties.BooleanProperty;
+import net.minecraft.world.phys.BlockHitResult;
 import net.xevianlight.aphelion.block.entity.custom.EAFPartEntity;
 import net.xevianlight.aphelion.block.entity.custom.ElectricArcFurnaceEntity;
+import net.xevianlight.aphelion.block.entity.custom.VacuumArcFurnaceControllerEntity;
+import net.xevianlight.aphelion.util.AphelionBlockStateProperties;
+import net.xevianlight.aphelion.util.MultiblockHelper;
 import org.jetbrains.annotations.Nullable;
 
 public class ArcFurnaceCasingBlock extends BaseEntityBlock {
 
-    public static final BooleanProperty FORMED = BooleanProperty.create("formed");
+    public static final BooleanProperty FORMED = AphelionBlockStateProperties.FORMED;
 
     public ArcFurnaceCasingBlock(Properties properties) {
         super(properties);
@@ -27,6 +36,11 @@ public class ArcFurnaceCasingBlock extends BaseEntityBlock {
                 .setValue(FORMED, false));
     }
 
+    @Override
+    protected MapCodec<? extends BaseEntityBlock> codec() {
+        return CODEC;
+    }
+
     public static Properties getProperties() {
         return Properties
                 .of()
@@ -42,18 +56,18 @@ public class ArcFurnaceCasingBlock extends BaseEntityBlock {
 
     public static final MapCodec<ArcFurnaceCasingBlock> CODEC = simpleCodec(ArcFurnaceCasingBlock::new);
 
-    @Override
-    protected MapCodec<? extends BaseEntityBlock> codec() {
-        return CODEC;
-    }
+//    @Override
+//    protected MapCodec<? extends BaseEntityBlock> codec() {
+//        return CODEC;
+//    }
 
-    @Override
-    public @Nullable BlockEntity newBlockEntity(BlockPos blockPos, BlockState blockState) {
-        return new EAFPartEntity(blockPos, blockState);
-    }
+//    @Override
+//    public @Nullable BlockEntity newBlockEntity(BlockPos blockPos, BlockState blockState) {
+//        return new EAFPartEntity(blockPos, blockState);
+//    }
 
     private void pingNearbyController(Level level, BlockPos pos) {
-        int r = 3;
+        int r = 5;
         BlockPos.MutableBlockPos mp = new BlockPos.MutableBlockPos();
 
         for (int dx=-r; dx<=r; dx++)
@@ -61,14 +75,28 @@ public class ArcFurnaceCasingBlock extends BaseEntityBlock {
                 for (int dz=-r; dz<=r; dz++) {
                     mp.set(pos.getX()+dx, pos.getY()+dy, pos.getZ()+dz);
                     BlockEntity be = level.getBlockEntity(mp);
-                    if (be instanceof ElectricArcFurnaceEntity eaf) {
-                        if (level.getBlockState(eaf.getBlockPos()).getBlock() instanceof ElectricArcFurnace) {
-                            eaf.tryForm();
+                    if (be instanceof VacuumArcFurnaceControllerEntity vaf) {
+                        if (level.getBlockState(vaf.getBlockPos()).getBlock() instanceof VacuumArcFurnaceController) {
+                            MultiblockHelper.tryForm(level, vaf.getBlockState(), vaf.getBlockPos(), VacuumArcFurnaceControllerEntity.SHAPE, AphelionBlockStateProperties.FORMED);
                         }
                     }
                 }
     }
 
+    @Override
+    public InteractionResult useWithoutItem(BlockState state, Level level, BlockPos pos, Player player, BlockHitResult result) {
+        if (state.getValue(AphelionBlockStateProperties.FORMED)) {
+            if (!level.isClientSide && player instanceof ServerPlayer serverPlayer && level.getBlockEntity(pos) instanceof EAFPartEntity eafPartEntity) {
+                if (eafPartEntity.getControllerPos() != null)
+                    if (level.getBlockEntity(eafPartEntity.getControllerPos()) instanceof VacuumArcFurnaceControllerEntity)
+                        serverPlayer.openMenu(new SimpleMenuProvider((VacuumArcFurnaceControllerEntity) level.getBlockEntity(eafPartEntity.getControllerPos()), Component.literal("Vacuum Arc Furnace")), eafPartEntity.getControllerPos());
+            }
+            return InteractionResult.sidedSuccess(level.isClientSide);
+        }
+
+        return InteractionResult.FAIL;
+    }
+
     @Override
     public void onPlace(BlockState state, Level level, BlockPos pos, BlockState oldState, boolean movedByPiston) {
         super.onPlace(state, level, pos, oldState, movedByPiston);
@@ -97,4 +125,9 @@ public class ArcFurnaceCasingBlock extends BaseEntityBlock {
     protected void createBlockStateDefinition(StateDefinition.Builder<Block, BlockState> builder) {
         builder.add(FORMED);
     }
+
+    @Override
+    public @Nullable BlockEntity newBlockEntity(BlockPos blockPos, BlockState blockState) {
+        return new EAFPartEntity(blockPos, blockState);
+    }
 }

src/main/java/net/xevianlight/aphelion/block/custom/ElectricArcFurnace.java

@@ -27,6 +27,8 @@ import net.minecraft.world.phys.BlockHitResult;
 import net.neoforged.neoforge.items.ItemStackHandler;
 import net.xevianlight.aphelion.block.entity.custom.ElectricArcFurnaceEntity;
 import net.xevianlight.aphelion.core.init.ModBlockEntities;
+import net.xevianlight.aphelion.util.AphelionBlockStateProperties;
+import net.xevianlight.aphelion.util.MultiblockHelper;
 import org.jetbrains.annotations.Nullable;
 
 import java.util.ArrayList;
@@ -36,7 +38,7 @@ public class ElectricArcFurnace extends BaseEntityBlock {
 
     public static final DirectionProperty FACING = BlockStateProperties.HORIZONTAL_FACING;
     public static final BooleanProperty LIT = BlockStateProperties.LIT;
-    public static final BooleanProperty FORMED = BooleanProperty.create("formed");
+    public static final BooleanProperty FORMED = AphelionBlockStateProperties.FORMED;
 
     public ElectricArcFurnace(Properties properties) {
         super(properties);
@@ -72,8 +74,8 @@ public class ElectricArcFurnace extends BaseEntityBlock {
     @Override
     public InteractionResult useWithoutItem(BlockState state, Level level, BlockPos pos, Player player, BlockHitResult result) {
 
-        if (!level.isClientSide && player instanceof ServerPlayer serverPlayer && level.getBlockEntity(pos) instanceof ElectricArcFurnaceEntity electricArcFurnaceEntity && state.getValue(FORMED)) {
-            serverPlayer.openMenu(new SimpleMenuProvider(electricArcFurnaceEntity, Component.literal("Electric Arc Furnace")), pos);
+        if (!level.isClientSide && player instanceof ServerPlayer serverPlayer && level.getBlockEntity(pos) instanceof ElectricArcFurnaceEntity electricArcFurnaceEntity) {
+                serverPlayer.openMenu(new SimpleMenuProvider(electricArcFurnaceEntity, Component.literal("Electric Arc Furnace")), pos);
         }
         return InteractionResult.sidedSuccess(level.isClientSide);
     }
@@ -95,7 +97,7 @@ public class ElectricArcFurnace extends BaseEntityBlock {
         if (!level.isClientSide && state.getBlock() != newState.getBlock()) {
             BlockEntity blockEntity= level.getBlockEntity(pos);
             if (blockEntity instanceof ElectricArcFurnaceEntity electricArcFurnaceEntity) {
-                if(state.getValue(FORMED)) electricArcFurnaceEntity.unformForRemoval();
+//                if(state.getValue(FORMED)) MultiblockHelper.unformForRemoval(level, state, pos, ElectricArcFurnaceEntity.SHAPE, AphelionBlockStateProperties.FORMED);
                 electricArcFurnaceEntity.drops();
             }
         }
@@ -107,9 +109,9 @@ public class ElectricArcFurnace extends BaseEntityBlock {
         super.onPlace(state, level, pos, oldState, movedByPiston);
         if (!level.isClientSide() && oldState.getBlock() != state.getBlock()) {
             BlockEntity blockEntity= level.getBlockEntity(pos);
-            if (blockEntity instanceof ElectricArcFurnaceEntity electricArcFurnaceEntity) {
-                electricArcFurnaceEntity.tryForm();
-            }
+//            if (blockEntity instanceof ElectricArcFurnaceEntity electricArcFurnaceEntity) {
+//                MultiblockHelper.tryForm(level, state, pos, ElectricArcFurnaceEntity.SHAPE, AphelionBlockStateProperties.FORMED);
+//            }
         }
     }
 

src/main/java/net/xevianlight/aphelion/block/custom/VacuumArcFurnaceController.java

@@ -0,0 +1,196 @@
+package net.xevianlight.aphelion.block.custom;
+
+import com.mojang.serialization.MapCodec;
+import net.minecraft.core.BlockPos;
+import net.minecraft.core.Direction;
+import net.minecraft.network.chat.Component;
+import net.minecraft.server.level.ServerPlayer;
+import net.minecraft.util.Mth;
+import net.minecraft.world.InteractionResult;
+import net.minecraft.world.SimpleMenuProvider;
+import net.minecraft.world.entity.player.Player;
+import net.minecraft.world.item.Item;
+import net.minecraft.world.item.ItemStack;
+import net.minecraft.world.item.context.BlockPlaceContext;
+import net.minecraft.world.level.BlockGetter;
+import net.minecraft.world.level.Level;
+import net.minecraft.world.level.block.*;
+import net.minecraft.world.level.block.entity.BlockEntity;
+import net.minecraft.world.level.block.entity.BlockEntityTicker;
+import net.minecraft.world.level.block.entity.BlockEntityType;
+import net.minecraft.world.level.block.state.BlockState;
+import net.minecraft.world.level.block.state.StateDefinition;
+import net.minecraft.world.level.block.state.properties.BlockStateProperties;
+import net.minecraft.world.level.block.state.properties.BooleanProperty;
+import net.minecraft.world.level.block.state.properties.DirectionProperty;
+import net.minecraft.world.phys.BlockHitResult;
+import net.neoforged.neoforge.items.ItemStackHandler;
+import net.xevianlight.aphelion.block.entity.custom.VacuumArcFurnaceControllerEntity;
+import net.xevianlight.aphelion.core.init.ModBlockEntities;
+import net.xevianlight.aphelion.util.AphelionBlockStateProperties;
+import net.xevianlight.aphelion.util.MultiblockHelper;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class VacuumArcFurnaceController extends BaseEntityBlock {
+
+    public static final DirectionProperty FACING = BlockStateProperties.HORIZONTAL_FACING;
+    public static final BooleanProperty LIT = BlockStateProperties.LIT;
+    public static final BooleanProperty FORMED = AphelionBlockStateProperties.FORMED;
+
+    public VacuumArcFurnaceController(Properties properties) {
+        super(properties);
+        this.registerDefaultState(this.getStateDefinition().any()
+                .setValue(FORMED, false));
+    }
+
+    public static final MapCodec<VacuumArcFurnaceController> CODEC = simpleCodec(VacuumArcFurnaceController::new);
+
+    private final int INPUT_SLOT = 0;
+    private final int SECONDARY_INPUT_SLOT = 1;
+    private final int OUTPUT_SLOT = 2;
+    private final int ENERGY_SLOT = 3;
+
+    @Override
+    protected MapCodec<? extends BaseEntityBlock> codec() {
+        return CODEC;
+    }
+
+    public static Properties getProperties() {
+        return Properties
+                .of()
+                .sound(SoundType.METAL)
+                .destroyTime(2f)
+                .explosionResistance(10f)
+                .requiresCorrectToolForDrops();
+    }
+
+    public static Item.Properties getItemProperties() {
+        return new Item.Properties();
+    }
+
+    @Override
+    public InteractionResult useWithoutItem(BlockState state, Level level, BlockPos pos, Player player, BlockHitResult result) {
+
+        if (!level.isClientSide && player instanceof ServerPlayer serverPlayer && level.getBlockEntity(pos) instanceof VacuumArcFurnaceControllerEntity vacuumArcFurnaceEntity) {
+            if (vacuumArcFurnaceEntity.isFormed())
+                serverPlayer.openMenu(new SimpleMenuProvider(vacuumArcFurnaceEntity, Component.literal("Vacuum Arc Furnace")), pos);
+        }
+        return InteractionResult.sidedSuccess(level.isClientSide);
+    }
+
+
+
+    @Override
+    public @Nullable BlockEntity newBlockEntity(BlockPos blockPos, BlockState blockState) {
+        return new VacuumArcFurnaceControllerEntity(blockPos, blockState);
+    }
+
+    @Override
+    public RenderShape getRenderShape(BlockState pState) {
+        return RenderShape.MODEL;
+    }
+
+    @Override
+    protected void onRemove(BlockState state, Level level, BlockPos pos, BlockState newState, boolean movedByPiston) {
+        if (!level.isClientSide && state.getBlock() != newState.getBlock()) {
+            BlockEntity blockEntity= level.getBlockEntity(pos);
+            if (blockEntity instanceof VacuumArcFurnaceControllerEntity vacuumArcFurnaceEntity) {
+                if(state.getValue(FORMED)) MultiblockHelper.unformForRemoval(level, state, pos, vacuumArcFurnaceEntity.SHAPE, AphelionBlockStateProperties.FORMED);
+                vacuumArcFurnaceEntity.drops();
+            }
+        }
+        super.onRemove(state, level, pos, newState, movedByPiston);
+    }
+
+    @Override
+    protected void onPlace(BlockState state, Level level, BlockPos pos, BlockState oldState, boolean movedByPiston) {
+        super.onPlace(state, level, pos, oldState, movedByPiston);
+        if (!level.isClientSide() && oldState.getBlock() != state.getBlock()) {
+            BlockEntity blockEntity= level.getBlockEntity(pos);
+            if (blockEntity instanceof VacuumArcFurnaceControllerEntity vacuumArcFurnaceEntity) {
+                MultiblockHelper.tryForm(level, state, pos, vacuumArcFurnaceEntity.SHAPE, AphelionBlockStateProperties.FORMED);
+            }
+        }
+    }
+
+    public static int getRedstoneSignalFromItemHandler(@javax.annotation.Nullable ItemStackHandler itemStackHandler, List<Integer> slots) {
+        if (itemStackHandler == null) {
+            return 0;
+        } else {
+            int i = 0;
+            float f = 0.0F;
+
+            for(int slot : slots) {
+                ItemStack itemstack = itemStackHandler.getStackInSlot(slot);
+                if (!itemstack.isEmpty()) {
+                    f += (float)itemstack.getCount() / (float)Math.min(itemStackHandler.getSlotLimit(slot), itemstack.getMaxStackSize());
+                    ++i;
+                }
+            }
+
+            f /= (float)slots.size();
+            return Mth.floor(f * 14.0F) + (i > 0 ? 1 : 0);
+        }
+    }
+
+    @Override
+    protected boolean isSignalSource(BlockState state) {
+        return true;
+    }
+
+    @Override
+    protected int getSignal(BlockState state, BlockGetter level, BlockPos pos, Direction direction) {
+        return super.getSignal(state, level, pos, direction);
+    }
+
+    @Override
+    protected boolean hasAnalogOutputSignal(BlockState state) {
+        return true;
+    }
+
+    @Override
+    protected int getAnalogOutputSignal(BlockState blockState, Level level, BlockPos pos) {
+        List<Integer> slots = new ArrayList<>();
+        slots.add(VacuumArcFurnaceControllerEntity.INPUT_SLOT);
+        slots.add(VacuumArcFurnaceControllerEntity.SECONDARY_INPUT_SLOT);
+        slots.add(VacuumArcFurnaceControllerEntity.OUTPUT_SLOT);
+        VacuumArcFurnaceControllerEntity vacuumArcFurnaceEntity = ((VacuumArcFurnaceControllerEntity) level.getBlockEntity(pos));
+
+        if (vacuumArcFurnaceEntity != null)
+            return getRedstoneSignalFromItemHandler(vacuumArcFurnaceEntity.inventory, slots);
+
+        return 0;
+    }
+
+    @Override
+    public @Nullable <T extends BlockEntity> BlockEntityTicker<T> getTicker(Level level, BlockState state, BlockEntityType<T> blockEntityType) {
+        if (level.isClientSide) {
+            return null;
+        }
+        return createTickerHelper(blockEntityType, ModBlockEntities.VACUUM_ARC_FURNACE_ENTITY.get(), (level1, blockPos, blockState, vacuumArcFurnaceEntity) -> vacuumArcFurnaceEntity.tick(level1, blockPos, blockState));
+
+    }
+
+    @Override
+    protected BlockState rotate(BlockState state, Rotation rotation) {
+        return state.setValue(FACING, rotation.rotate(state.getValue(FACING)));
+    }
+
+    @Override
+    protected BlockState mirror(BlockState state, Mirror mirror) {
+        return state.rotate(mirror.getRotation(state.getValue(FACING)));
+    }
+
+    @Override
+    public @Nullable BlockState getStateForPlacement(BlockPlaceContext context) {
+        return this.defaultBlockState().setValue(FACING, context.getHorizontalDirection().getOpposite()).setValue(LIT, false).setValue(FORMED, false);
+    }
+
+    @Override
+    protected void createBlockStateDefinition(StateDefinition.Builder<Block, BlockState> builder) {
+        builder.add(FACING, LIT, FORMED);
+    }
+}

src/main/java/net/xevianlight/aphelion/block/entity/custom/EAFPartEntity.java

@@ -7,9 +7,10 @@ import net.minecraft.world.level.block.entity.BlockEntity;
 import net.minecraft.world.level.block.entity.BlockEntityType;
 import net.minecraft.world.level.block.state.BlockState;
 import net.xevianlight.aphelion.core.init.ModBlockEntities;
+import net.xevianlight.aphelion.util.IMultiblockPart;
 import org.jetbrains.annotations.Nullable;
 
-public class EAFPartEntity extends BlockEntity {
+public class EAFPartEntity extends BlockEntity implements IMultiblockPart {
     @Nullable private BlockPos controllerPos;
 
     public EAFPartEntity(BlockPos pos, BlockState blockState) {

src/main/java/net/xevianlight/aphelion/block/entity/custom/ElectricArcFurnaceEntity.java

@@ -8,12 +8,9 @@ import net.minecraft.network.chat.Component;
 import net.minecraft.network.protocol.Packet;
 import net.minecraft.network.protocol.game.ClientGamePacketListener;
 import net.minecraft.network.protocol.game.ClientboundBlockEntityDataPacket;
-import net.minecraft.server.level.ServerLevel;
 import net.minecraft.world.Containers;
 import net.minecraft.world.MenuProvider;
 import net.minecraft.world.SimpleContainer;
-import net.minecraft.world.entity.EntityType;
-import net.minecraft.world.entity.MobSpawnType;
 import net.minecraft.world.entity.player.Inventory;
 import net.minecraft.world.entity.player.Player;
 import net.minecraft.world.inventory.AbstractContainerMenu;
@@ -23,26 +20,24 @@ import net.minecraft.world.item.crafting.*;
 import net.minecraft.world.level.Level;
 import net.minecraft.world.level.block.entity.BlockEntity;
 import net.minecraft.world.level.block.state.BlockState;
-import net.minecraft.world.level.block.state.properties.BlockStateProperties;
-import net.minecraft.world.phys.Vec3;
 import net.neoforged.neoforge.capabilities.Capabilities;
 import net.neoforged.neoforge.energy.IEnergyStorage;
 import net.neoforged.neoforge.items.IItemHandler;
 import net.neoforged.neoforge.items.ItemStackHandler;
-import net.xevianlight.aphelion.block.custom.ArcFurnaceCasingBlock;
 import net.xevianlight.aphelion.block.custom.ElectricArcFurnace;
 import net.xevianlight.aphelion.block.entity.energy.ModEnergyStorage;
 import net.xevianlight.aphelion.core.init.ModBlockEntities;
+import net.xevianlight.aphelion.core.init.ModBlocks;
 import net.xevianlight.aphelion.recipe.ElectricArcFurnaceRecipe;
 import net.xevianlight.aphelion.recipe.ElectricArcFurnaceRecipeInput;
 import net.xevianlight.aphelion.recipe.ModRecipes;
 import net.xevianlight.aphelion.screen.ElectricArcFurnaceMenu;
+import net.xevianlight.aphelion.util.AphelionBlockStateProperties;
+import net.xevianlight.aphelion.util.MultiblockHelper;
 import net.xevianlight.aphelion.util.SidedSlotHandler;
 import org.jetbrains.annotations.Nullable;
 
-import java.util.ArrayList;
-import java.util.List;
-import java.util.Optional;
+import java.util.*;
 
 public class ElectricArcFurnaceEntity extends BlockEntity implements MenuProvider {
 
@@ -108,7 +103,7 @@ public class ElectricArcFurnaceEntity extends BlockEntity implements MenuProvide
 
     public void tick(Level level, BlockPos pos, BlockState blockState) {
 
-        if (!blockState.getValue(ElectricArcFurnace.FORMED))
+        if (!blockState.getValue(AphelionBlockStateProperties.FORMED))
             return;
 
         chargeFromItem();
@@ -316,6 +311,7 @@ public class ElectricArcFurnaceEntity extends BlockEntity implements MenuProvide
     }
 
     private final IItemHandler fullHandler = new SidedSlotHandler(inventory, new int[]{INPUT_SLOT, SECONDARY_INPUT_SLOT, OUTPUT_SLOT, ENERGY_SLOT}, true, true);
+    private final IItemHandler emptyJeiHandler = new SidedSlotHandler(inventory, new int[]{}, false, false);
     private final IItemHandler inputHandler = new SidedSlotHandler(inventory, new int[]{0,1}, true, true);
     private final IItemHandler outputHandler = new SidedSlotHandler(inventory, new int[]{2,3}, false, true);
     private final IItemHandler jadeHandler = new SidedSlotHandler(inventory, new int[]{0}, false, false);
@@ -325,13 +321,18 @@ public class ElectricArcFurnaceEntity extends BlockEntity implements MenuProvide
     }
 
     public IEnergyStorage getEnergyStorage(@Nullable Direction direction) {
+        return ENERGY_STORAGE;
+    }
+
+    public IEnergyStorage getTrueEnergyStorage(@Nullable Direction direction) {
         return this.ENERGY_STORAGE;
     }
 
-    private final ModEnergyStorage ENERGY_STORAGE = createEnergyStorage();
+    private final ModEnergyStorage ENERGY_STORAGE = createEnergyStorage(ENERGY_CAPACITY, MAX_TRANSFER);
+    private final ModEnergyStorage NULL_ENERGY_STORAGE = createEnergyStorage(0, 0);
 
-    private ModEnergyStorage createEnergyStorage() {
-        return new ModEnergyStorage(ENERGY_CAPACITY, MAX_TRANSFER) {
+    private ModEnergyStorage createEnergyStorage(int capacity, int transfer) {
+        return new ModEnergyStorage(capacity, transfer) {
             @Override
             public void onEnergyChanged() {
                 setChanged();
@@ -378,7 +379,7 @@ public class ElectricArcFurnaceEntity extends BlockEntity implements MenuProvide
 
     @Override
     public @Nullable AbstractContainerMenu createMenu(int i, Inventory inventory, Player player) {
-        return new ElectricArcFurnaceMenu(i, inventory, this, this.data);
+            return new ElectricArcFurnaceMenu(i, inventory, this, this.data);
     }
 
     @Nullable
@@ -403,132 +404,8 @@ public class ElectricArcFurnaceEntity extends BlockEntity implements MenuProvide
         };
     }
 
-
-
-    /// MULTIBLOCK
-    /// LOGIC
-    /// BELOW
-
-
-
-    private boolean formed = false; // cached runtime state
-
-    private static final BlockPos[] SHAPE = new BlockPos[] {
-            new BlockPos(1, 0, 0),
-            new BlockPos(0, 0, 1),
-            new BlockPos(1, 0, 1),
-
-            new BlockPos(0, 1, 0),
-            new BlockPos(1, 1, 0),
-            new BlockPos(0, 1, 1),
-            new BlockPos(1, 1, 1),
+    public static final MultiblockHelper.ShapePart[] SHAPE = new MultiblockHelper.ShapePart[] {
+        new MultiblockHelper.ShapePart(new BlockPos(3,0,3), s -> s.is(ModBlocks.ARC_FURNACE_CASING_BLOCK)),
+//        new MultiblockHelper.ShapePart(new BlockPos(-1,0,0), s -> s.is(Blocks.AMETHYST_BLOCK))
     };
-
-    private List<BlockPos> getPartPositions() {
-        Direction facing = getBlockState().getValue(BlockStateProperties.HORIZONTAL_FACING);
-        BlockPos origin = getBlockPos();
-
-        List<BlockPos> out = new ArrayList<>(SHAPE.length);
-        for (BlockPos off : SHAPE) {
-            BlockPos ro = rotateY(off, facing);
-            out.add(origin.offset(ro));
-        }
-        return out;
-    }
-
-    private boolean structureMatches() {
-        if (level == null) return false;
-
-        for (BlockPos p : getPartPositions()) {
-            BlockState st = level.getBlockState(p);
-
-            // Accept only your casing/part blocks
-            if (!(st.getBlock() instanceof ArcFurnaceCasingBlock)) {
-                return false;
-            }
-        }
-        return true;
-    }
-
-    public boolean isFormed() {
-        return formed;
-    }
-
-    public void tryForm() {
-        if (level == null || level.isClientSide()) return;
-        if (!(getBlockState().getBlock() instanceof ElectricArcFurnace)) return; // don't form if not actually present
-
-        boolean valid = structureMatches();
-
-        if (valid && !formed) {
-            formed = true;
-            setFormedState(true);
-            linkParts();
-        } else if (!valid && formed) {
-            unform();
-        }
-    }
-
-    public void unform() {
-        if (level == null || level.isClientSide()) return;
-
-        formed = false;
-        setFormedState(false);
-        unlinkParts();
-    }
-
-    public void unformForRemoval() {
-        if (level == null || level.isClientSide()) return;
-
-        formed = false;
-        unlinkParts();
-    }
-
-    private void setFormedState(boolean value) {
-        BlockState state = getBlockState();
-        if (state.hasProperty(ElectricArcFurnace.FORMED) && state.getValue(ElectricArcFurnace.FORMED) != value) {
-            level.setBlock(worldPosition, state.setValue(ElectricArcFurnace.FORMED, value), 3);
-        }
-    }
-
-    private void linkParts() {
-        if (level == null || level.isClientSide()) return;
-
-        for (BlockPos p : getPartPositions()) {
-            BlockState st = level.getBlockState(p);
-
-            if (st.getBlock() instanceof ArcFurnaceCasingBlock && st.hasProperty(ArcFurnaceCasingBlock.FORMED)) {
-                if (!st.getValue(ArcFurnaceCasingBlock.FORMED)) {
-                    level.setBlock(p, st.setValue(ArcFurnaceCasingBlock.FORMED, true), 3);
-                }
-            }
-
-            BlockEntity be = level.getBlockEntity(p);
-            if (be instanceof EAFPartEntity part) {
-                part.setControllerPos(worldPosition);
-                part.setChanged();
-            }
-        }
-    }
-
-    private void unlinkParts() {
-        if (level == null || level.isClientSide()) return;
-
-        for (BlockPos p : getPartPositions()) {
-            BlockState st = level.getBlockState(p);
-
-            if (st.getBlock() instanceof ArcFurnaceCasingBlock && st.hasProperty(ArcFurnaceCasingBlock.FORMED)) {
-                if (st.getValue(ArcFurnaceCasingBlock.FORMED)) {
-                    level.setBlock(p, st.setValue(ArcFurnaceCasingBlock.FORMED, false), 3);
-                }
-            }
-
-            BlockEntity be = level.getBlockEntity(p);
-            if (be instanceof EAFPartEntity part && worldPosition.equals(part.getControllerPos())) {
-                part.setControllerPos(null);
-                part.setChanged();
-            }
-        }
-    }
-
 }

src/main/java/net/xevianlight/aphelion/block/entity/custom/VacuumArcFurnaceControllerEntity.java

@@ -0,0 +1,507 @@
+package net.xevianlight.aphelion.block.entity.custom;
+
+import net.minecraft.core.BlockPos;
+import net.minecraft.core.Direction;
+import net.minecraft.core.HolderLookup;
+import net.minecraft.nbt.CompoundTag;
+import net.minecraft.network.chat.Component;
+import net.minecraft.network.protocol.Packet;
+import net.minecraft.network.protocol.game.ClientGamePacketListener;
+import net.minecraft.network.protocol.game.ClientboundBlockEntityDataPacket;
+import net.minecraft.world.Containers;
+import net.minecraft.world.MenuProvider;
+import net.minecraft.world.SimpleContainer;
+import net.minecraft.world.entity.player.Inventory;
+import net.minecraft.world.entity.player.Player;
+import net.minecraft.world.inventory.AbstractContainerMenu;
+import net.minecraft.world.inventory.ContainerData;
+import net.minecraft.world.item.ItemStack;
+import net.minecraft.world.item.crafting.BlastingRecipe;
+import net.minecraft.world.item.crafting.RecipeHolder;
+import net.minecraft.world.item.crafting.RecipeType;
+import net.minecraft.world.item.crafting.SingleRecipeInput;
+import net.minecraft.world.level.Level;
+import net.minecraft.world.level.block.Blocks;
+import net.minecraft.world.level.block.entity.BlockEntity;
+import net.minecraft.world.level.block.state.BlockState;
+import net.neoforged.neoforge.capabilities.Capabilities;
+import net.neoforged.neoforge.energy.IEnergyStorage;
+import net.neoforged.neoforge.items.IItemHandler;
+import net.neoforged.neoforge.items.ItemStackHandler;
+import net.xevianlight.aphelion.block.custom.ElectricArcFurnace;
+import net.xevianlight.aphelion.block.entity.energy.ModEnergyStorage;
+import net.xevianlight.aphelion.core.init.ModBlockEntities;
+import net.xevianlight.aphelion.core.init.ModBlocks;
+import net.xevianlight.aphelion.recipe.ElectricArcFurnaceRecipe;
+import net.xevianlight.aphelion.recipe.ElectricArcFurnaceRecipeInput;
+import net.xevianlight.aphelion.recipe.ModRecipes;
+import net.xevianlight.aphelion.screen.VacuumArcFurnaceMenu;
+import net.xevianlight.aphelion.screen.ElectricArcFurnaceMenu;
+import net.xevianlight.aphelion.util.AphelionBlockStateProperties;
+import net.xevianlight.aphelion.util.IMultiblockController;
+import net.xevianlight.aphelion.util.MultiblockHelper;
+import net.xevianlight.aphelion.util.SidedSlotHandler;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.Optional;
+
+public class VacuumArcFurnaceControllerEntity extends BlockEntity implements MenuProvider, IMultiblockController {
+
+    private final int SIZE = 4;
+    private int ENERGY_CAPACITY = 64000;
+    private int MAX_TRANSFER = 320;
+    private int progress = 0;
+    private int maxProgress = 100;
+    private final int DEFAULT_MAX_PROGRESS = 100;
+    private final ContainerData data;
+    private int MACHINE_ENERGY_COST = 20;
+
+    public static final int INPUT_SLOT = 0;
+    public static final int SECONDARY_INPUT_SLOT = 1;
+    public static final int OUTPUT_SLOT = 2;
+    public static final int ENERGY_SLOT = 3;
+
+    public VacuumArcFurnaceControllerEntity(BlockPos pos, BlockState blockState) {
+        super(ModBlockEntities.VACUUM_ARC_FURNACE_ENTITY.get(), pos, blockState);
+        this.data = new ContainerData() {
+            @Override
+            public int get(int index) {
+                return switch (index) {
+                    case 0 -> VacuumArcFurnaceControllerEntity.this.progress;
+                    case 1 -> VacuumArcFurnaceControllerEntity.this.maxProgress;
+                    default -> 0;
+                };
+            }
+
+            @Override
+            public void set(int index, int pValue) {
+                switch (index) {
+                    case 0: VacuumArcFurnaceControllerEntity.this.progress = pValue;
+                    case 1: VacuumArcFurnaceControllerEntity.this.maxProgress = pValue;
+                }
+            }
+
+            @Override
+            public int getCount() {
+                return 2;
+            }
+        };
+    }
+
+    public final ItemStackHandler inventory = new ItemStackHandler(SIZE) {
+        @Override
+        protected void onContentsChanged(int slot) {
+            setChanged();
+            if(!level.isClientSide()) {
+                level.sendBlockUpdated(getBlockPos(), getBlockState(), getBlockState(), 3);
+            }
+        }
+
+//        @Override
+//        public boolean isItemValid(int slot, ItemStack stack) {
+//            if (slot == ENERGY_SLOT) {
+//                var capability = stack.getCapability(Capabilities.EnergyStorage.ITEM);
+//                return capability != null;
+//            }
+//            return super.isItemValid(slot, stack);
+//        }
+    };
+
+    public void tick(Level level, BlockPos pos, BlockState blockState) {
+
+        if (!blockState.getValue(AphelionBlockStateProperties.FORMED))
+            return;
+
+        chargeFromItem();
+
+        if (inventory.getStackInSlot(SECONDARY_INPUT_SLOT).isEmpty()) {
+            // Secondary slot is empty, try furnace recipes
+            if (hasFurnaceRecipe(INPUT_SLOT) && hasEnoughEnergyToCraft(MACHINE_ENERGY_COST)) {
+                // Recipe detected! We have enough energy to process
+                progress++;
+                useEnergy();
+                level.setBlockAndUpdate(pos, blockState.setValue(ElectricArcFurnace.LIT, true));
+                setChanged(level, pos, blockState);
+
+                if (hasCraftingFinished()) {
+                    outputBlastingResult(INPUT_SLOT, OUTPUT_SLOT);
+                    resetProgress();
+                }
+            } else if (hasFurnaceRecipe(INPUT_SLOT) && !hasEnoughEnergyToCraft(MACHINE_ENERGY_COST)) {
+                // Recipe detected but we ran out of power
+                level.setBlockAndUpdate(pos, blockState.setValue(ElectricArcFurnace.LIT, false));
+                setChanged(level, pos, blockState);
+                progress = progress > 0 ? progress - 1 : 0;
+            } else {
+                // Invalid recipe
+                resetProgress();
+                level.setBlockAndUpdate(pos, blockState.setValue(ElectricArcFurnace.LIT, false));
+                setChanged(level, pos, blockState);
+            }
+        } else {
+            // Secondary slot is NOT empty, try alloying recipes
+            if (hasAlloyingRecipe(INPUT_SLOT, SECONDARY_INPUT_SLOT)) {
+                if (hasEnoughEnergyToCraft(MACHINE_ENERGY_COST)) {
+                    // Alloy recipe detected! We have enough energy to process
+                    progress++;
+                    useEnergy();
+                    level.setBlockAndUpdate(pos, blockState.setValue(ElectricArcFurnace.LIT, true));
+                    setChanged(level, pos, blockState);
+
+                    if (hasCraftingFinished()) {
+                        outputAlloyingResult(INPUT_SLOT, SECONDARY_INPUT_SLOT, OUTPUT_SLOT);
+                        resetProgress();
+                    }
+                } else {
+                    // Recipe detected but we ran out of power
+                    level.setBlockAndUpdate(pos, blockState.setValue(ElectricArcFurnace.LIT, false));
+                    setChanged(level, pos, blockState);
+                    progress = progress > 0 ? progress - 1 : 0;
+                }
+            } else {
+                // Invalid recipe
+                resetProgress();
+                level.setBlockAndUpdate(pos, blockState.setValue(ElectricArcFurnace.LIT, false));
+                setChanged(level, pos, blockState);
+            }
+        }
+
+
+    }
+
+    private void chargeFromItem() {
+        ItemStack stack;
+
+        try {
+            stack = inventory.getStackInSlot(ENERGY_SLOT);
+
+            if (stack.isEmpty()) return;
+
+            IEnergyStorage itemEnergy = stack.getCapability(Capabilities.EnergyStorage.ITEM);
+            if (itemEnergy == null || !itemEnergy.canExtract()) return;
+
+            int freeCapacity = ENERGY_STORAGE.getMaxEnergyStored() - ENERGY_STORAGE.getEnergyStored();
+            if (freeCapacity <= 0) return;
+
+            int maxMove = Math.min(MAX_TRANSFER, freeCapacity);
+
+            // Simulate extraction first
+            int canExtract = itemEnergy.extractEnergy(maxMove, true);
+            if (canExtract <= 0) return;
+
+            // Receive into block (simulate then execute is safest)
+            int canReceive = ENERGY_STORAGE.receiveEnergy(canExtract, true);
+            if (canReceive <= 0) return;
+
+            int extracted = itemEnergy.extractEnergy(canReceive, false);
+            ENERGY_STORAGE.receiveEnergy(maxMove, false);
+
+            setChanged();
+        } catch (Exception e) {
+
+        }
+    }
+
+    private void outputBlastingResult(int slot, int resultSlot) {
+        Optional<RecipeHolder<BlastingRecipe>> recipe = getFurnaceRecipe(inventory.getStackInSlot(slot));
+        ItemStack output = recipe.get().value().getResultItem(null);
+
+        // 2x multiplier for smelting recipes
+
+        inventory.extractItem(slot, 1, false);
+        inventory.setStackInSlot(resultSlot, new ItemStack(output.getItem(),
+                inventory.getStackInSlot(resultSlot).getCount() + (output.getCount() * 2)));
+    }
+
+    private void outputAlloyingResult(int inputSlot, int secondaryInputSlot, int outputSlot) {
+        Optional<RecipeHolder<ElectricArcFurnaceRecipe>> recipe = getAlloyingRecipe(inventory.getStackInSlot(inputSlot), inventory.getStackInSlot(secondaryInputSlot));
+        ItemStack output = recipe.get().value().getResultItem(null);
+
+        inventory.extractItem(inputSlot, recipe.get().value().baseCount(), false);
+        inventory.extractItem(secondaryInputSlot, recipe.get().value().alloyCount(), false);
+        inventory.setStackInSlot(outputSlot, new ItemStack(output.getItem(), inventory.getStackInSlot(outputSlot).getCount() + (output.getCount())));
+    }
+
+    private void resetProgress() {
+        this.progress = 0;
+        this.maxProgress = DEFAULT_MAX_PROGRESS;
+    }
+
+    private void useEnergy() {
+        this.ENERGY_STORAGE.extractEnergy(MACHINE_ENERGY_COST, false);
+    }
+
+    private boolean hasEnoughEnergyToCraft(int energyCost) {
+        return ENERGY_STORAGE.getEnergyStored() >= energyCost;
+    }
+
+    private boolean canInsertItemIntoOutputSlot(ItemStack output, int slot) {
+        return inventory.getStackInSlot(slot).isEmpty() ||
+                inventory.getStackInSlot(slot).getItem() == output.getItem();
+    }
+
+    private boolean canInsertAmountIntoOutputSlot(int count, int slot) {
+        int maxCount = inventory.getStackInSlot(slot).isEmpty() ? 64 : inventory.getStackInSlot(slot).getMaxStackSize();
+        int currentCount = inventory.getStackInSlot(slot).getCount();
+
+        return maxCount >= currentCount + count;
+    }
+
+    private boolean isOutputSlotEmptyOrReceivable(int slot) {
+        return this.inventory.getStackInSlot(slot).isEmpty() ||
+                this.inventory.getStackInSlot(slot).getCount() < this.inventory.getStackInSlot(slot).getMaxStackSize();
+    }
+
+    private boolean hasCraftingFinished() {
+        maxProgress = DEFAULT_MAX_PROGRESS;
+        return this.progress >= this.maxProgress;
+    }
+
+
+    private boolean hasAlloyingRecipe(int slotBase, int slotAlloy) {
+        ItemStack baseStack = inventory.getStackInSlot(slotBase);
+        ItemStack alloyStack = inventory.getStackInSlot(slotAlloy);
+
+        Optional<RecipeHolder<ElectricArcFurnaceRecipe>> opt =
+                getAlloyingRecipe(baseStack, alloyStack);
+
+        if (opt.isEmpty()) return false;
+
+        ElectricArcFurnaceRecipe recipe = opt.get().value();
+
+        // 1) Check required input counts
+        if (baseStack.getCount() < recipe.baseCount()) return false;
+        if (alloyStack.getCount() < recipe.alloyCount()) return false;
+
+        // 2) Check output slot compatibility + space
+        ItemStack output = recipe.getResultItem(null);
+
+        maxProgress = recipe.cookTime();
+
+        return canInsertItemIntoOutputSlot(output, OUTPUT_SLOT)
+                && canInsertAmountIntoOutputSlot(output.getCount(), OUTPUT_SLOT);
+    }
+
+    private Optional<RecipeHolder<ElectricArcFurnaceRecipe>> getAlloyingRecipe(ItemStack base, ItemStack alloy) {
+        if (base.isEmpty()) return Optional.empty();
+        if (alloy.isEmpty()) return Optional.empty();
+
+        return this.level.getRecipeManager()
+                .getRecipeFor(
+                        ModRecipes.ELECTRIC_ARC_FURNACE_RECIPE_TYPE.get(),
+                        new ElectricArcFurnaceRecipeInput(base, alloy),
+                        level
+                );
+    }
+
+    private boolean hasFurnaceRecipe(int slot) {
+        Optional<RecipeHolder<BlastingRecipe>> recipe = getFurnaceRecipe(new ItemStack(inventory.getStackInSlot(slot).getItem().asItem(), 1));
+        if (recipe.isEmpty())
+            return false;
+
+        ItemStack output = recipe.get().value().getResultItem(null);
+        return canInsertAmountIntoOutputSlot(output.getCount() * 2, OUTPUT_SLOT) && canInsertItemIntoOutputSlot(output, OUTPUT_SLOT);
+    }
+
+    private Optional<RecipeHolder<BlastingRecipe>> getFurnaceRecipe(ItemStack stack) {
+        if (stack.isEmpty()) return Optional.empty();
+
+        return this.level.getRecipeManager()
+                .getRecipeFor(RecipeType.BLASTING, new SingleRecipeInput(stack), level);
+
+    }
+
+    public void sendUpdate() {
+        setChanged();
+        level.sendBlockUpdated(getBlockPos(), getBlockState(), getBlockState(), 3);
+    }
+
+    private final IItemHandler fullHandler = new SidedSlotHandler(inventory, new int[]{INPUT_SLOT, SECONDARY_INPUT_SLOT, OUTPUT_SLOT, ENERGY_SLOT}, true, true);
+    private final IItemHandler emptyJeiHandler = new SidedSlotHandler(inventory, new int[]{}, false, false);
+    private final IItemHandler inputHandler = new SidedSlotHandler(inventory, new int[]{0,1}, true, true);
+    private final IItemHandler outputHandler = new SidedSlotHandler(inventory, new int[]{2,3}, false, true);
+    private final IItemHandler jadeHandler = new SidedSlotHandler(inventory, new int[]{0}, false, false);
+
+    public IItemHandler getItemHandler(Direction direction) {
+        if (direction != null)
+            return isFormed() ? fullHandler : null;
+        return isFormed() ? fullHandler : emptyJeiHandler;
+    }
+
+    public IEnergyStorage getEnergyStorage(@Nullable Direction direction) {
+        if (direction == null)
+            return isFormed() ? ENERGY_STORAGE : NULL_ENERGY_STORAGE;
+        return isFormed() ? ENERGY_STORAGE : null;
+    }
+
+    public IEnergyStorage getTrueEnergyStorage(@Nullable Direction direction) {
+        return this.ENERGY_STORAGE;
+    }
+
+    private final ModEnergyStorage ENERGY_STORAGE = createEnergyStorage(ENERGY_CAPACITY, MAX_TRANSFER);
+    private final ModEnergyStorage NULL_ENERGY_STORAGE = createEnergyStorage(0, 0);
+
+    private ModEnergyStorage createEnergyStorage(int capacity, int transfer) {
+        return new ModEnergyStorage(capacity, transfer) {
+            @Override
+            public void onEnergyChanged() {
+                setChanged();
+                getLevel().sendBlockUpdated(getBlockPos(), getBlockState(), getBlockState(), 3);
+            }
+        };
+    }
+
+    public ItemStackHandler getInventory() {
+        return inventory;
+    }
+
+    public void drops() {
+        SimpleContainer inv = new SimpleContainer(inventory.getSlots());
+        for(int i = 0; i < inventory.getSlots(); i++) {
+            inv.setItem(i, inventory.getStackInSlot(i));
+        }
+
+        Containers.dropContents(this.level, this.worldPosition, inv);
+    }
+
+    @Override
+    protected void saveAdditional(CompoundTag tag, HolderLookup.Provider pRegistries) {
+        tag.put("inventory", inventory.serializeNBT(pRegistries));
+        tag.putInt("electric_arc_furnace.progress", progress);
+        tag.putInt("electric_arc_furnace.maxProgress", maxProgress);
+        tag.putInt("electric_arc_furnace.energy", ENERGY_STORAGE.getEnergyStored());
+        super.saveAdditional(tag, pRegistries);
+    }
+
+    @Override
+    protected void loadAdditional(CompoundTag tag, HolderLookup.Provider pRegistries) {
+        super.loadAdditional(tag, pRegistries);
+        inventory.deserializeNBT(pRegistries, tag.getCompound("inventory"));
+        progress = tag.getInt("electric_arc_furnace.progress");
+        maxProgress = tag.getInt("electric_arc_furnace.maxProgress");
+        ENERGY_STORAGE.setEnergy(tag.getInt("electric_arc_furnace.energy"));
+    }
+
+    @Override
+    public Component getDisplayName() {
+        return null;
+    }
+
+    @Override
+    public @Nullable AbstractContainerMenu createMenu(int i, Inventory inventory, Player player) {
+        if (isFormed())
+            return new VacuumArcFurnaceMenu(i, inventory, this, this.data);
+        return new ElectricArcFurnaceMenu(i, inventory, this, this.data);
+    }
+
+    @Nullable
+    @Override
+    public Packet<ClientGamePacketListener> getUpdatePacket() {
+        return ClientboundBlockEntityDataPacket.create(this);
+    }
+
+    @Override
+    public CompoundTag getUpdateTag(HolderLookup.Provider pRegistries) {
+        return saveWithoutMetadata(pRegistries);
+    }
+
+    private static BlockPos rotateY(BlockPos off, Direction facing) {
+        // Assumes "default" shape faces NORTH.
+        return switch (facing) {
+            case NORTH -> off;
+            case EAST  -> new BlockPos(-off.getZ(), off.getY(), off.getX());
+            case SOUTH -> new BlockPos(-off.getX(), off.getY(), -off.getZ());
+            case WEST  -> new BlockPos(off.getZ(), off.getY(), -off.getX());
+            default    -> off;
+        };
+    }
+
+    public static final MultiblockHelper.ShapePart[] SHAPE = new MultiblockHelper.ShapePart[] {
+
+            //Layer -1
+        new MultiblockHelper.ShapePart(new BlockPos(1,-1,0), s -> s.is(ModBlocks.ARC_FURNACE_CASING_BLOCK)),
+        new MultiblockHelper.ShapePart(new BlockPos(1,-1,1), s -> s.is(ModBlocks.ARC_FURNACE_CASING_BLOCK)),
+        new MultiblockHelper.ShapePart(new BlockPos(1,-1,2), s -> s.is(ModBlocks.ARC_FURNACE_CASING_BLOCK)),
+        new MultiblockHelper.ShapePart(new BlockPos(-1,-1,0), s -> s.is(ModBlocks.ARC_FURNACE_CASING_BLOCK)),
+        new MultiblockHelper.ShapePart(new BlockPos(-1,-1,1), s -> s.is(ModBlocks.ARC_FURNACE_CASING_BLOCK)),
+        new MultiblockHelper.ShapePart(new BlockPos(-1,-1,2), s -> s.is(ModBlocks.ARC_FURNACE_CASING_BLOCK)),
+        new MultiblockHelper.ShapePart(new BlockPos(0,-1,0), s -> s.is(ModBlocks.ARC_FURNACE_CASING_BLOCK)),
+        new MultiblockHelper.ShapePart(new BlockPos(0,-1,1), s -> s.is(ModBlocks.ARC_FURNACE_CASING_BLOCK)),
+        new MultiblockHelper.ShapePart(new BlockPos(0,-1,2), s -> s.is(ModBlocks.ARC_FURNACE_CASING_BLOCK)),
+
+            //Layer 0
+        new MultiblockHelper.ShapePart(new BlockPos(1,0,0), s -> s.is(ModBlocks.ARC_FURNACE_CASING_BLOCK)),
+        new MultiblockHelper.ShapePart(new BlockPos(1,0,1), s -> s.is(ModBlocks.ARC_FURNACE_CASING_BLOCK)),
+        new MultiblockHelper.ShapePart(new BlockPos(1,0,2), s -> s.is(ModBlocks.ARC_FURNACE_CASING_BLOCK)),
+        new MultiblockHelper.ShapePart(new BlockPos(-1,0,0), s -> s.is(ModBlocks.ARC_FURNACE_CASING_BLOCK)),
+        new MultiblockHelper.ShapePart(new BlockPos(-1,0,1), s -> s.is(ModBlocks.ARC_FURNACE_CASING_BLOCK)),
+        new MultiblockHelper.ShapePart(new BlockPos(-1,0,2), s -> s.is(ModBlocks.ARC_FURNACE_CASING_BLOCK)),
+        new MultiblockHelper.ShapePart(new BlockPos(0,0,2), s -> s.is(ModBlocks.ARC_FURNACE_CASING_BLOCK)),
+        new MultiblockHelper.ShapePart(new BlockPos(0,0,1), s -> s.is(Blocks.AIR)),
+
+            //Layer 1
+
+        new MultiblockHelper.ShapePart(new BlockPos(1,1,0), s -> s.is(ModBlocks.ARC_FURNACE_CASING_BLOCK)),
+        new MultiblockHelper.ShapePart(new BlockPos(1,1,1), s -> s.is(ModBlocks.ARC_FURNACE_CASING_BLOCK)),
+        new MultiblockHelper.ShapePart(new BlockPos(1,1,2), s -> s.is(ModBlocks.ARC_FURNACE_CASING_BLOCK)),
+        new MultiblockHelper.ShapePart(new BlockPos(-1,1,0), s -> s.is(ModBlocks.ARC_FURNACE_CASING_BLOCK)),
+        new MultiblockHelper.ShapePart(new BlockPos(-1,1,1), s -> s.is(ModBlocks.ARC_FURNACE_CASING_BLOCK)),
+        new MultiblockHelper.ShapePart(new BlockPos(-1,1,2), s -> s.is(ModBlocks.ARC_FURNACE_CASING_BLOCK)),
+        new MultiblockHelper.ShapePart(new BlockPos(0,1,0), s -> s.is(ModBlocks.ARC_FURNACE_CASING_BLOCK)),
+        new MultiblockHelper.ShapePart(new BlockPos(0,1,1), s -> s.is(ModBlocks.ARC_FURNACE_CASING_BLOCK)),
+        new MultiblockHelper.ShapePart(new BlockPos(0,1,2), s -> s.is(ModBlocks.ARC_FURNACE_CASING_BLOCK)),
+//        new MultiblockHelper.ShapePart(new BlockPos(-1,0,0), s -> s.is(Blocks.AMETHYST_BLOCK))
+    };
+
+
+
+
+    /// MULTIBLOCK
+    /// LOGIC
+    /// BELOW
+
+
+//    record ShapePart (BlockPos offset, Predicate<BlockState> rule) {}
+
+    private boolean formed = false; // cached runtime state
+
+    // Assumes the default state is NORTH.
+
+    // (Left -Right, Up -Down, Back -Front)
+
+
+//    private static final BlockPos[] SHAPE = new BlockPos[] {
+//            new BlockPos(1, 0, 0),
+//            new BlockPos(0, 0, 1),
+//            new BlockPos(1, 0, 1),
+//
+//            new BlockPos(0, 1, 0),
+//            new BlockPos(1, 1, 0),
+//            new BlockPos(0, 1, 1),
+//            new BlockPos(1, 1, 1),
+//    };
+
+
+
+    public boolean isFormed() {
+        return getBlockState().hasProperty(AphelionBlockStateProperties.FORMED)
+                && getBlockState().getValue(AphelionBlockStateProperties.FORMED);
+    }
+
+    @Override
+    public void setFormed(boolean formed) {
+        this.formed = formed;
+        invalidateCapabilities();
+        if (!formed) {
+            drops();
+        }
+    }
+
+    private void setFormedState(boolean value) {
+        BlockState state = getBlockState();
+        if (state.hasProperty(ElectricArcFurnace.FORMED) && state.getValue(ElectricArcFurnace.FORMED) != value) {
+            level.setBlock(worldPosition, state.setValue(ElectricArcFurnace.FORMED, value), 3);
+        }
+    }
+
+}