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/*
* Copyright (c) 2019-2021 GeyserMC. http://geysermc.org
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
* @author GeyserMC
* @link https://github.com/GeyserMC/Geyser
*/
package org.geysermc.connector.network.translators.java.world;
import com.github.steveice10.mc.protocol.data.game.entity.metadata.ItemStack;
import com.github.steveice10.mc.protocol.data.game.window.VillagerTrade;
import com.github.steveice10.mc.protocol.packet.ingame.server.window.ServerTradeListPacket;
import com.nukkitx.nbt.NbtMap;
import com.nukkitx.nbt.NbtMapBuilder;
import com.nukkitx.nbt.NbtType;
import com.nukkitx.protocol.bedrock.data.entity.EntityData;
import com.nukkitx.protocol.bedrock.data.inventory.ContainerType;
import com.nukkitx.protocol.bedrock.data.inventory.ItemData;
import com.nukkitx.protocol.bedrock.packet.UpdateTradePacket;
import org.geysermc.connector.entity.Entity;
import org.geysermc.connector.inventory.Inventory;
import org.geysermc.connector.inventory.MerchantContainer;
import org.geysermc.connector.network.session.GeyserSession;
import org.geysermc.connector.network.translators.PacketTranslator;
import org.geysermc.connector.network.translators.Translator;
import org.geysermc.connector.network.translators.item.ItemTranslator;
import org.geysermc.connector.registry.type.ItemMapping;
import java.util.ArrayList;
import java.util.List;
@Translator(packet = ServerTradeListPacket.class)
public class JavaTradeListTranslator extends PacketTranslator<ServerTradeListPacket> {
@Override
public void translate(GeyserSession session, ServerTradeListPacket packet) {
Inventory openInventory = session.getOpenInventory();
if (!(openInventory instanceof MerchantContainer && openInventory.getId() == packet.getWindowId())) {
return;
}
// Retrieve the fake villager involved in the trade, and update its metadata to match with the window information
MerchantContainer merchantInventory = (MerchantContainer) openInventory;
merchantInventory.setVillagerTrades(packet.getTrades());
Entity villager = merchantInventory.getVillager();
villager.getMetadata().put(EntityData.TRADE_TIER, packet.getVillagerLevel() - 1);
villager.getMetadata().put(EntityData.MAX_TRADE_TIER, 4);
villager.getMetadata().put(EntityData.TRADE_XP, packet.getExperience());
villager.updateBedrockMetadata(session);
// Construct the packet that opens the trading window
UpdateTradePacket updateTradePacket = new UpdateTradePacket();
updateTradePacket.setTradeTier(packet.getVillagerLevel() - 1);
updateTradePacket.setContainerId((short) packet.getWindowId());
updateTradePacket.setContainerType(ContainerType.TRADE);
updateTradePacket.setDisplayName(openInventory.getTitle());
updateTradePacket.setSize(0);
updateTradePacket.setNewTradingUi(true);
updateTradePacket.setUsingEconomyTrade(true);
updateTradePacket.setPlayerUniqueEntityId(session.getPlayerEntity().getGeyserId());
updateTradePacket.setTraderUniqueEntityId(villager.getGeyserId());
NbtMapBuilder builder = NbtMap.builder();
boolean addExtraTrade = packet.isRegularVillager() && packet.getVillagerLevel() < 5;
List<NbtMap> tags = new ArrayList<>(addExtraTrade ? packet.getTrades().length + 1 : packet.getTrades().length);
for (int i = 0; i < packet.getTrades().length; i++) {
VillagerTrade trade = packet.getTrades()[i];
NbtMapBuilder recipe = NbtMap.builder();
recipe.putInt("netId", i + 1);
recipe.putInt("maxUses", trade.isTradeDisabled() ? 0 : trade.getMaxUses());
recipe.putInt("traderExp", trade.getXp());
recipe.putFloat("priceMultiplierA", trade.getPriceMultiplier());
recipe.put("sell", getItemTag(session, trade.getOutput(), 0));
recipe.putFloat("priceMultiplierB", 0.0f);
recipe.putInt("buyCountB", trade.getSecondInput() != null ? trade.getSecondInput().getAmount() : 0);
recipe.putInt("buyCountA", trade.getFirstInput().getAmount());
recipe.putInt("demand", trade.getDemand());
recipe.putInt("tier", packet.getVillagerLevel() > 0 ? packet.getVillagerLevel() - 1 : 0); // -1 crashes client
recipe.put("buyA", getItemTag(session, trade.getFirstInput(), trade.getSpecialPrice()));
if (trade.getSecondInput() != null) {
recipe.put("buyB", getItemTag(session, trade.getSecondInput(), 0));
}
recipe.putInt("uses", trade.getNumUses());
recipe.putByte("rewardExp", (byte) 1);
tags.add(recipe.build());
}
//Hidden trade to fix visual experience bug
if (addExtraTrade) {
tags.add(NbtMap.builder()
.putInt("maxUses", 0)
.putInt("traderExp", 0)
.putFloat("priceMultiplierA", 0.0f)
.putFloat("priceMultiplierB", 0.0f)
.putInt("buyCountB", 0)
.putInt("buyCountA", 0)
.putInt("demand", 0)
.putInt("tier", 5)
.putInt("uses", 0)
.putByte("rewardExp", (byte) 0)
.build());
}
builder.putList("Recipes", NbtType.COMPOUND, tags);
List<NbtMap> expTags = new ArrayList<>(5);
expTags.add(NbtMap.builder().putInt("0", 0).build());
expTags.add(NbtMap.builder().putInt("1", 10).build());
expTags.add(NbtMap.builder().putInt("2", 70).build());
expTags.add(NbtMap.builder().putInt("3", 150).build());
expTags.add(NbtMap.builder().putInt("4", 250).build());
builder.putList("TierExpRequirements", NbtType.COMPOUND, expTags);
updateTradePacket.setOffers(builder.build());
session.sendUpstreamPacket(updateTradePacket);
}
private NbtMap getItemTag(GeyserSession session, ItemStack stack, int specialPrice) {
ItemData itemData = ItemTranslator.translateToBedrock(session, stack);
ItemMapping mapping = session.getItemMappings().getMapping(stack);
NbtMapBuilder builder = NbtMap.builder();
builder.putByte("Count", (byte) (Math.max(itemData.getCount() + specialPrice, 1)));
builder.putShort("Damage", (short) itemData.getDamage());
builder.putString("Name", mapping.getBedrockIdentifier());
if (itemData.getTag() != null) {
NbtMap tag = itemData.getTag().toBuilder().build();
builder.put("tag", tag);
}
NbtMap blockTag = session.getBlockMappings().getBedrockBlockNbt(mapping.getJavaIdentifier());
if (blockTag != null) {
// This fixes certain blocks being unable to stack after grabbing one
builder.putCompound("Block", blockTag);
builder.putShort("Damage", (short) 0);
}
return builder.build();
}
}
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