/* * 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.ItemEntry; import org.geysermc.connector.network.translators.item.ItemRegistry; import org.geysermc.connector.network.translators.item.ItemTranslator; import java.util.ArrayList; import java.util.List; @Translator(packet = ServerTradeListPacket.class) public class JavaTradeListTranslator extends PacketTranslator { @Override public void translate(ServerTradeListPacket packet, GeyserSession session) { 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 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 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); ItemEntry itemEntry = ItemRegistry.getItem(stack); NbtMapBuilder builder = NbtMap.builder(); builder.putByte("Count", (byte) (Math.max(itemData.getCount() + specialPrice, 1))); builder.putShort("Damage", (short) itemData.getDamage()); builder.putString("Name", itemEntry.getBedrockIdentifier()); if (itemData.getTag() != null) { NbtMap tag = itemData.getTag().toBuilder().build(); builder.put("tag", tag); } NbtMap blockTag = session.getBlockTranslator().getBedrockBlockNbt(itemEntry.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(); } }