Code/net/minecraft/world/inventory/CrafterMenu.java

package net.minecraft.world.inventory;

import net.minecraft.server.level.ServerLevel;
import net.minecraft.server.level.ServerPlayer;
import net.minecraft.world.Container;
import net.minecraft.world.entity.player.Inventory;
import net.minecraft.world.entity.player.Player;
import net.minecraft.world.item.ItemStack;
import net.minecraft.world.item.crafting.CraftingInput;
import net.minecraft.world.item.crafting.RecipeHolder;
import net.minecraft.world.level.block.CrafterBlock;

public class CrafterMenu extends AbstractContainerMenu implements ContainerListener {
    protected static final int SLOT_COUNT = 9;
    private static final int INV_SLOT_START = 9;
    private static final int INV_SLOT_END = 36;
    private static final int USE_ROW_SLOT_START = 36;
    private static final int USE_ROW_SLOT_END = 45;
    private final ResultContainer resultContainer = new ResultContainer();
    private final ContainerData containerData;
    private final Player player;
    private final CraftingContainer container;

    public CrafterMenu(int p_310742_, Inventory p_312080_) {
        super(MenuType.CRAFTER_3x3, p_310742_);
        this.player = p_312080_.player;
        this.containerData = new SimpleContainerData(10);
        this.container = new TransientCraftingContainer(this, 3, 3);
        this.addSlots(p_312080_);
    }

    public CrafterMenu(int p_312262_, Inventory p_309729_, CraftingContainer p_309543_, ContainerData p_312942_) {
        super(MenuType.CRAFTER_3x3, p_312262_);
        this.player = p_309729_.player;
        this.containerData = p_312942_;
        this.container = p_309543_;
        checkContainerSize(p_309543_, 9);
        p_309543_.startOpen(p_309729_.player);
        this.addSlots(p_309729_);
        this.addSlotListener(this);
    }

    private void addSlots(Inventory p_312143_) {
        for (int i = 0; i < 3; i++) {
            for (int j = 0; j < 3; j++) {
                int k = j + i * 3;
                this.addSlot(new CrafterSlot(this.container, k, 26 + j * 18, 17 + i * 18, this));
            }
        }

        this.addStandardInventorySlots(p_312143_, 8, 84);
        this.addSlot(new NonInteractiveResultSlot(this.resultContainer, 0, 134, 35));
        this.addDataSlots(this.containerData);
        this.refreshRecipeResult();
    }

    public void setSlotState(int p_312148_, boolean p_312187_) {
        CrafterSlot crafterslot = (CrafterSlot)this.getSlot(p_312148_);
        this.containerData.set(crafterslot.index, p_312187_ ? 0 : 1);
        this.broadcastChanges();
    }

    public boolean isSlotDisabled(int p_311661_) {
        return p_311661_ > -1 && p_311661_ < 9 ? this.containerData.get(p_311661_) == 1 : false;
    }

    public boolean isPowered() {
        return this.containerData.get(9) == 1;
    }

    @Override
    public ItemStack quickMoveStack(Player p_313133_, int p_309724_) {
        ItemStack itemstack = ItemStack.EMPTY;
        Slot slot = this.slots.get(p_309724_);
        if (slot != null && slot.hasItem()) {
            ItemStack itemstack1 = slot.getItem();
            itemstack = itemstack1.copy();
            if (p_309724_ < 9) {
                if (!this.moveItemStackTo(itemstack1, 9, 45, true)) {
                    return ItemStack.EMPTY;
                }
            } else if (!this.moveItemStackTo(itemstack1, 0, 9, false)) {
                return ItemStack.EMPTY;
            }

            if (itemstack1.isEmpty()) {
                slot.set(ItemStack.EMPTY);
            } else {
                slot.setChanged();
            }

            if (itemstack1.getCount() == itemstack.getCount()) {
                return ItemStack.EMPTY;
            }

            slot.onTake(p_313133_, itemstack1);
        }

        return itemstack;
    }

    @Override
    public boolean stillValid(Player p_309546_) {
        return this.container.stillValid(p_309546_);
    }

    private void refreshRecipeResult() {
        if (this.player instanceof ServerPlayer serverplayer) {
            ServerLevel serverlevel = serverplayer.serverLevel();
            CraftingInput craftinginput = this.container.asCraftInput();
            ItemStack itemstack = CrafterBlock.getPotentialResults(serverlevel, craftinginput)
                .map(p_390777_ -> p_390777_.value().assemble(craftinginput, serverlevel.registryAccess()))
                .orElse(ItemStack.EMPTY);
            this.resultContainer.setItem(0, itemstack);
        }
    }

    public Container getContainer() {
        return this.container;
    }

    @Override
    public void slotChanged(AbstractContainerMenu p_313164_, int p_310604_, ItemStack p_312680_) {
        this.refreshRecipeResult();
    }

    @Override
    public void dataChanged(AbstractContainerMenu p_312122_, int p_310028_, int p_310424_) {
    }
}