ViaVersion/common/src/main/java/com/viaversion/viaversion/protocols/protocol1_13_1to1_13/packets/InventoryPackets.java

/*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
 * Copyright (C) 2016-2021 ViaVersion and contributors
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package com.viaversion.viaversion.protocols.protocol1_13_1to1_13.packets;

import com.viaversion.viaversion.api.minecraft.item.Item;
import com.viaversion.viaversion.api.protocol.packet.PacketWrapper;
import com.viaversion.viaversion.api.protocol.remapper.PacketHandler;
import com.viaversion.viaversion.api.protocol.remapper.PacketRemapper;
import com.viaversion.viaversion.api.type.Type;
import com.viaversion.viaversion.protocols.protocol1_13_1to1_13.Protocol1_13_1To1_13;
import com.viaversion.viaversion.protocols.protocol1_13to1_12_2.ClientboundPackets1_13;
import com.viaversion.viaversion.protocols.protocol1_13to1_12_2.ServerboundPackets1_13;
import com.viaversion.viaversion.protocols.protocol1_13to1_12_2.data.RecipeRewriter1_13_2;
import com.viaversion.viaversion.rewriter.ItemRewriter;
import com.viaversion.viaversion.rewriter.RecipeRewriter;

public class InventoryPackets {

    public static void register(Protocol1_13_1To1_13 protocol) {
        ItemRewriter itemRewriter = new ItemRewriter(protocol, InventoryPackets::toClient, InventoryPackets::toServer);
        itemRewriter.registerSetSlot(ClientboundPackets1_13.SET_SLOT, Type.FLAT_ITEM);
        itemRewriter.registerWindowItems(ClientboundPackets1_13.WINDOW_ITEMS, Type.FLAT_ITEM_ARRAY);
        itemRewriter.registerAdvancements(ClientboundPackets1_13.ADVANCEMENTS, Type.FLAT_ITEM);
        itemRewriter.registerSetCooldown(ClientboundPackets1_13.COOLDOWN);

        protocol.registerClientbound(ClientboundPackets1_13.PLUGIN_MESSAGE, new PacketRemapper() {
            @Override
            public void registerMap() {
                map(Type.STRING); // Channel
                handler(new PacketHandler() {
                    @Override
                    public void handle(PacketWrapper wrapper) throws Exception {
                        String channel = wrapper.get(Type.STRING, 0);
                        if (channel.equals("minecraft:trader_list") || channel.equals("trader_list")) {
                            wrapper.passthrough(Type.INT); // Passthrough Window ID

                            int size = wrapper.passthrough(Type.UNSIGNED_BYTE);
                            for (int i = 0; i < size; i++) {
                                // Input Item
                                toClient(wrapper.passthrough(Type.FLAT_ITEM));
                                // Output Item
                                InventoryPackets.toClient(wrapper.passthrough(Type.FLAT_ITEM));

                                boolean secondItem = wrapper.passthrough(Type.BOOLEAN); // Has second item
                                if (secondItem) {
                                    // Second Item
                                    InventoryPackets.toClient(wrapper.passthrough(Type.FLAT_ITEM));
                                }

                                wrapper.passthrough(Type.BOOLEAN); // Trade disabled
                                wrapper.passthrough(Type.INT); // Number of tools uses
                                wrapper.passthrough(Type.INT); // Maximum number of trade uses
                            }
                        }
                    }
                });
            }
        });

        itemRewriter.registerEntityEquipment(ClientboundPackets1_13.ENTITY_EQUIPMENT, Type.FLAT_ITEM);

        RecipeRewriter recipeRewriter = new RecipeRewriter1_13_2(protocol, InventoryPackets::toClient);
        protocol.registerClientbound(ClientboundPackets1_13.DECLARE_RECIPES, new PacketRemapper() {
            @Override
            public void registerMap() {
                handler(wrapper -> {
                    int size = wrapper.passthrough(Type.VAR_INT);
                    for (int i = 0; i < size; i++) {
                        // First id, then type
                        String id = wrapper.passthrough(Type.STRING);
                        String type = wrapper.passthrough(Type.STRING).replace("minecraft:", "");
                        recipeRewriter.handle(wrapper, type);
                    }
                });
            }
        });

        itemRewriter.registerClickWindow(ServerboundPackets1_13.CLICK_WINDOW, Type.FLAT_ITEM);
        itemRewriter.registerCreativeInvAction(ServerboundPackets1_13.CREATIVE_INVENTORY_ACTION, Type.FLAT_ITEM);

        itemRewriter.registerSpawnParticle(ClientboundPackets1_13.SPAWN_PARTICLE, Type.FLAT_ITEM, Type.FLOAT);
    }

    public static void toClient(Item item) {
        if (item == null) return;
        item.setIdentifier(Protocol1_13_1To1_13.MAPPINGS.getNewItemId(item.getIdentifier()));
    }

    public static void toServer(Item item) {
        if (item == null) return;
        item.setIdentifier(Protocol1_13_1To1_13.MAPPINGS.getOldItemId(item.getIdentifier()));
    }
}