mirror of https://github.com/GeyserMC/Geyser.git
531 lines
25 KiB
Java
531 lines
25 KiB
Java
/*
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* Copyright (c) 2019-2022 GeyserMC. http://geysermc.org
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*
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* @author GeyserMC
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* @link https://github.com/GeyserMC/Geyser
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*/
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package org.geysermc.geyser.translator.protocol.java;
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import com.github.steveice10.mc.protocol.data.game.command.CommandNode;
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import com.github.steveice10.mc.protocol.data.game.command.CommandParser;
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import com.github.steveice10.mc.protocol.data.game.command.properties.ResourceProperties;
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import com.github.steveice10.mc.protocol.data.game.entity.attribute.AttributeType;
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import com.github.steveice10.mc.protocol.packet.ingame.clientbound.ClientboundCommandsPacket;
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import com.nukkitx.protocol.bedrock.data.command.CommandData;
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import com.nukkitx.protocol.bedrock.data.command.CommandEnumData;
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import com.nukkitx.protocol.bedrock.data.command.CommandParam;
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import com.nukkitx.protocol.bedrock.data.command.CommandParamData;
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import com.nukkitx.protocol.bedrock.packet.AvailableCommandsPacket;
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import it.unimi.dsi.fastutil.Hash;
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import it.unimi.dsi.fastutil.ints.Int2ObjectMap;
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import it.unimi.dsi.fastutil.ints.Int2ObjectOpenHashMap;
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import it.unimi.dsi.fastutil.ints.IntOpenHashSet;
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import it.unimi.dsi.fastutil.ints.IntSet;
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import it.unimi.dsi.fastutil.objects.Object2ObjectOpenCustomHashMap;
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import lombok.Getter;
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import lombok.ToString;
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import net.kyori.adventure.text.format.NamedTextColor;
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import org.checkerframework.checker.nullness.qual.MonotonicNonNull;
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import org.geysermc.geyser.GeyserImpl;
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import org.geysermc.geyser.api.event.java.ServerDefineCommandsEvent;
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import org.geysermc.geyser.command.GeyserCommandManager;
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import org.geysermc.geyser.inventory.item.Enchantment;
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import org.geysermc.geyser.registry.BlockRegistries;
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import org.geysermc.geyser.registry.Registries;
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import org.geysermc.geyser.session.GeyserSession;
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import org.geysermc.geyser.translator.protocol.PacketTranslator;
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import org.geysermc.geyser.translator.protocol.Translator;
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import org.geysermc.geyser.util.EntityUtils;
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import java.util.*;
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@Translator(packet = ClientboundCommandsPacket.class)
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public class JavaCommandsTranslator extends PacketTranslator<ClientboundCommandsPacket> {
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private static final String[] ALL_EFFECT_IDENTIFIERS = EntityUtils.getAllEffectIdentifiers();
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private static final String[] ATTRIBUTES = AttributeType.Builtin.BUILTIN.keySet().toArray(new String[0]);
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private static final String[] ENUM_BOOLEAN = {"true", "false"};
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private static final String[] VALID_COLORS;
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private static final String[] VALID_SCOREBOARD_SLOTS;
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private static final Hash.Strategy<BedrockCommandInfo> PARAM_STRATEGY = new Hash.Strategy<>() {
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@Override
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public int hashCode(BedrockCommandInfo o) {
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int paramHash = Arrays.deepHashCode(o.paramData());
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return 31 * paramHash + o.description().hashCode();
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}
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@Override
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public boolean equals(BedrockCommandInfo a, BedrockCommandInfo b) {
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if (a == b) return true;
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if (a == null || b == null) return false;
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if (!a.description().equals(b.description())) return false;
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if (a.paramData().length != b.paramData().length) return false;
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for (int i = 0; i < a.paramData().length; i++) {
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CommandParamData[] a1 = a.paramData()[i];
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CommandParamData[] b1 = b.paramData()[i];
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if (a1.length != b1.length) return false;
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for (int j = 0; j < a1.length; j++) {
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if (!a1[j].equals(b1[j])) return false;
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}
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}
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return true;
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}
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};
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static {
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List<String> validColors = new ArrayList<>(NamedTextColor.NAMES.keys());
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validColors.add("reset");
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VALID_COLORS = validColors.toArray(new String[0]);
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List<String> teamOptions = new ArrayList<>(Arrays.asList("list", "sidebar", "belowName"));
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for (String color : NamedTextColor.NAMES.keys()) {
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teamOptions.add("sidebar.team." + color);
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}
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VALID_SCOREBOARD_SLOTS = teamOptions.toArray(new String[0]);
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}
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@Override
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public void translate(GeyserSession session, ClientboundCommandsPacket packet) {
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// Don't send command suggestions if they are disabled
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if (!session.getGeyser().getConfig().isCommandSuggestions()) {
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session.getGeyser().getLogger().debug("Not sending translated command suggestions as they are disabled.");
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// Send an empty packet so Bedrock doesn't override /help with its own, built-in help command.
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AvailableCommandsPacket emptyPacket = new AvailableCommandsPacket();
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session.sendUpstreamPacket(emptyPacket);
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return;
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}
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GeyserCommandManager manager = session.getGeyser().commandManager();
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CommandNode[] nodes = packet.getNodes();
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List<CommandData> commandData = new ArrayList<>();
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IntSet commandNodes = new IntOpenHashSet();
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Set<String> knownAliases = new HashSet<>();
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Map<BedrockCommandInfo, Set<String>> commands = new Object2ObjectOpenCustomHashMap<>(PARAM_STRATEGY);
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Int2ObjectMap<List<CommandNode>> commandArgs = new Int2ObjectOpenHashMap<>();
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// Get the first node, it should be a root node
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CommandNode rootNode = nodes[packet.getFirstNodeIndex()];
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// Loop through the root nodes to get all commands
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for (int nodeIndex : rootNode.getChildIndices()) {
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CommandNode node = nodes[nodeIndex];
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// Make sure we don't have duplicated commands (happens if there is more than 1 root node)
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if (!commandNodes.add(nodeIndex) || !knownAliases.add(node.getName().toLowerCase(Locale.ROOT))) continue;
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// Get and update the commandArgs list with the found arguments
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if (node.getChildIndices().length >= 1) {
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for (int childIndex : node.getChildIndices()) {
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commandArgs.computeIfAbsent(nodeIndex, ($) -> new ArrayList<>()).add(nodes[childIndex]);
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}
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}
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// Get and parse all params
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CommandParamData[][] params = getParams(session, nodes[nodeIndex], nodes);
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// Insert the alias name into the command list
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commands.computeIfAbsent(new BedrockCommandInfo(node.getName().toLowerCase(Locale.ROOT), manager.description(node.getName().toLowerCase(Locale.ROOT)), params),
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index -> new HashSet<>()).add(node.getName().toLowerCase());
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}
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var eventBus = session.getGeyser().eventBus();
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var event = new ServerDefineCommandsEvent(session, commands.keySet());
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eventBus.fire(event);
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if (event.isCancelled()) {
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return;
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}
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var oldEvent = new org.geysermc.geyser.api.event.downstream.ServerDefineCommandsEvent(session, commands.keySet());
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eventBus.fire(oldEvent);
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if (oldEvent.isCancelled()) {
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return;
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}
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// The command flags, not sure what these do apart from break things
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List<CommandData.Flag> flags = Collections.emptyList();
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// Loop through all the found commands
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for (Map.Entry<BedrockCommandInfo, Set<String>> entry : commands.entrySet()) {
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String commandName = entry.getValue().iterator().next(); // We know this has a value
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// Create a basic alias
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CommandEnumData aliases = new CommandEnumData(commandName + "Aliases", entry.getValue().toArray(new String[0]), false);
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// Build the completed command and add it to the final list
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CommandData data = new CommandData(commandName, entry.getKey().description(), flags, (byte) 0, aliases, entry.getKey().paramData());
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commandData.add(data);
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}
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// Add our commands to the AvailableCommandsPacket for the bedrock client
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AvailableCommandsPacket availableCommandsPacket = new AvailableCommandsPacket();
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availableCommandsPacket.getCommands().addAll(commandData);
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session.getGeyser().getLogger().debug("Sending command packet of " + commandData.size() + " commands");
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// Finally, send the commands to the client
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session.sendUpstreamPacket(availableCommandsPacket);
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}
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/**
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* Build the command parameter array for the given command
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*
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* @param session the session
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* @param commandNode The command to build the parameters for
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* @param allNodes Every command node
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* @return An array of parameter option arrays
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*/
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private static CommandParamData[][] getParams(GeyserSession session, CommandNode commandNode, CommandNode[] allNodes) {
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// Check if the command is an alias and redirect it
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if (commandNode.getRedirectIndex().isPresent()) {
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int redirectIndex = commandNode.getRedirectIndex().getAsInt();
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GeyserImpl.getInstance().getLogger().debug("Redirecting command " + commandNode.getName() + " to " + allNodes[redirectIndex].getName());
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commandNode = allNodes[redirectIndex];
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}
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if (commandNode.getChildIndices().length >= 1) {
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// Create the root param node and build all the children
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ParamInfo rootParam = new ParamInfo(commandNode, null);
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rootParam.buildChildren(new CommandBuilderContext(session), allNodes);
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List<CommandParamData[]> treeData = rootParam.getTree();
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return treeData.toArray(new CommandParamData[0][]);
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}
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return new CommandParamData[0][0];
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}
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/**
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* Convert Java edition command types to Bedrock edition
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*
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* @param context the session's command context
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* @param node Command type to convert
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* @return Bedrock parameter data type
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*/
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private static Object mapCommandType(CommandBuilderContext context, CommandNode node) {
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CommandParser parser = node.getParser();
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if (parser == null) {
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return CommandParam.STRING;
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}
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return switch (parser) {
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case FLOAT, ROTATION, DOUBLE -> CommandParam.FLOAT;
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case INTEGER, LONG -> CommandParam.INT;
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case ENTITY, GAME_PROFILE -> CommandParam.TARGET;
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case BLOCK_POS -> CommandParam.BLOCK_POSITION;
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case COLUMN_POS, VEC3 -> CommandParam.POSITION;
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case MESSAGE -> CommandParam.MESSAGE;
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case NBT_COMPOUND_TAG, NBT_TAG, NBT_PATH -> CommandParam.JSON; //TODO NBT was removed
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case RESOURCE_LOCATION, FUNCTION -> CommandParam.FILE_PATH;
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case BOOL -> ENUM_BOOLEAN;
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case OPERATION -> CommandParam.OPERATOR; // ">=", "==", etc
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case BLOCK_STATE -> context.getBlockStates();
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case ITEM_STACK -> context.session.getItemMappings().getItemNames();
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case COLOR -> VALID_COLORS;
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case SCOREBOARD_SLOT -> VALID_SCOREBOARD_SLOTS;
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case RESOURCE -> handleResource(context, ((ResourceProperties) node.getProperties()).getRegistryKey(), false);
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case RESOURCE_OR_TAG -> handleResource(context, ((ResourceProperties) node.getProperties()).getRegistryKey(), true);
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case DIMENSION -> context.session.getLevels();
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case TEAM -> context.getTeams(); // Note: as of Java 1.19.3, objectives are currently parsed from the server
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default -> CommandParam.STRING;
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};
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}
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private static Object handleResource(CommandBuilderContext context, String resource, boolean tags) {
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return switch (resource) {
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case "minecraft:attribute" -> ATTRIBUTES;
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case "minecraft:enchantment" -> Enchantment.JavaEnchantment.ALL_JAVA_IDENTIFIERS;
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case "minecraft:entity_type" -> context.getEntityTypes();
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case "minecraft:mob_effect" -> ALL_EFFECT_IDENTIFIERS;
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case "minecraft:worldgen/biome" -> tags ? context.getBiomesWithTags() : context.getBiomes();
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default -> CommandParam.STRING;
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};
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}
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/**
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* Stores the command description and parameter data for best optimizing the Bedrock commands packet.
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*/
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private record BedrockCommandInfo(String name, String description, CommandParamData[][] paramData) implements
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org.geysermc.geyser.api.event.downstream.ServerDefineCommandsEvent.CommandInfo,
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ServerDefineCommandsEvent.CommandInfo
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{
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}
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/**
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* Stores command completions so we don't have to rebuild the same values multiple times.
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*/
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@MonotonicNonNull
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private static class CommandBuilderContext {
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private final GeyserSession session;
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private Object biomesWithTags;
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private Object biomesNoTags;
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private String[] blockStates;
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private String[] entityTypes;
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private CommandEnumData teams;
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CommandBuilderContext(GeyserSession session) {
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this.session = session;
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}
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private Object getBiomes() {
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if (biomesNoTags != null) {
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return biomesNoTags;
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}
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String[] identifiers = session.getGeyser().getWorldManager().getBiomeIdentifiers(false);
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return (biomesNoTags = identifiers != null ? identifiers : CommandParam.STRING);
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}
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private Object getBiomesWithTags() {
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if (biomesWithTags != null) {
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return biomesWithTags;
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}
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String[] identifiers = session.getGeyser().getWorldManager().getBiomeIdentifiers(true);
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return (biomesWithTags = identifiers != null ? identifiers : CommandParam.STRING);
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}
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private String[] getBlockStates() {
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if (blockStates != null) {
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return blockStates;
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}
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return (blockStates = BlockRegistries.JAVA_TO_BEDROCK_IDENTIFIERS.get().keySet().toArray(new String[0]));
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}
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private String[] getEntityTypes() {
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if (entityTypes != null) {
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return entityTypes;
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}
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return (entityTypes = Registries.JAVA_ENTITY_IDENTIFIERS.get().keySet().toArray(new String[0]));
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}
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private CommandEnumData getTeams() {
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if (teams != null) {
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return teams;
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}
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return (teams = new CommandEnumData("Geyser_Teams",
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session.getWorldCache().getScoreboard().getTeamNames(), true));
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}
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}
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@Getter
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@ToString
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private static class ParamInfo {
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private final CommandNode paramNode;
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private final CommandParamData paramData;
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private final List<ParamInfo> children;
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/**
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* Create a new parameter info object
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*
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* @param paramNode CommandNode the parameter is for
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* @param paramData The existing parameters for the command
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*/
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public ParamInfo(CommandNode paramNode, CommandParamData paramData) {
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this.paramNode = paramNode;
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this.paramData = paramData;
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this.children = new ArrayList<>();
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}
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/**
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* Build the array of all the child parameters (recursive)
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*
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* @param context the session's command builder context
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* @param allNodes Every command node
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*/
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public void buildChildren(CommandBuilderContext context, CommandNode[] allNodes) {
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for (int paramID : paramNode.getChildIndices()) {
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CommandNode paramNode = allNodes[paramID];
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if (paramNode == this.paramNode) {
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// Fixes a StackOverflowError when an argument has itself as a child
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continue;
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}
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if (paramNode.getParser() == null) {
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boolean foundCompatible = false;
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for (int i = 0; i < children.size(); i++) {
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ParamInfo enumParamInfo = children.get(i);
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// Check to make sure all descending nodes of this command are compatible - otherwise, create a new overload
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if (isCompatible(allNodes, enumParamInfo.getParamNode(), paramNode)) {
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foundCompatible = true;
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// Extend the current list of enum values
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String[] enumOptions = Arrays.copyOf(enumParamInfo.getParamData().getEnumData().getValues(), enumParamInfo.getParamData().getEnumData().getValues().length + 1);
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enumOptions[enumOptions.length - 1] = paramNode.getName();
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// Re-create the command using the updated values
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CommandEnumData enumData = new CommandEnumData(enumParamInfo.getParamData().getEnumData().getName(), enumOptions, false);
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children.set(i, new ParamInfo(enumParamInfo.getParamNode(), new CommandParamData(enumParamInfo.getParamData().getName(), this.paramNode.isExecutable(), enumData, null, null, Collections.emptyList())));
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break;
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}
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}
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if (!foundCompatible) {
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// Create a new subcommand with this exact type
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CommandEnumData enumData = new CommandEnumData(paramNode.getName(), new String[]{paramNode.getName()}, false);
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// On setting optional:
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// isExecutable is defined as a node "constitutes a valid command."
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// Therefore, any children of the parameter must simply be optional.
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children.add(new ParamInfo(paramNode, new CommandParamData(paramNode.getName(), this.paramNode.isExecutable(), enumData, null, null, Collections.emptyList())));
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}
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} else {
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// Put the non-enum param into the list
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Object mappedType = mapCommandType(context, paramNode);
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CommandEnumData enumData = null;
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CommandParam type = null;
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boolean optional = this.paramNode.isExecutable();
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if (mappedType instanceof CommandEnumData) {
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// Likely to specify isSoft, to be possibly updated later.
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enumData = (CommandEnumData) mappedType;
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} else if (mappedType instanceof String[]) {
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enumData = new CommandEnumData(getEnumDataName(paramNode).toLowerCase(Locale.ROOT), (String[]) mappedType, false);
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} else {
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type = (CommandParam) mappedType;
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// Bedrock throws a fit if an optional message comes after a string or target
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// Example vanilla commands: ban-ip, ban, and kick
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if (optional && type == CommandParam.MESSAGE && (paramData.getType() == CommandParam.STRING || paramData.getType() == CommandParam.TARGET)) {
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optional = false;
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}
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}
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// IF enumData != null:
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// In game, this will show up like <paramNode.getName(): enumData.getName()>
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// So if paramNode.getName() == "value" and enumData.getName() == "bool": <value: bool>
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children.add(new ParamInfo(paramNode, new CommandParamData(paramNode.getName(), optional, enumData, type, null, Collections.emptyList())));
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}
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}
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// Recursively build all child options
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for (ParamInfo child : children) {
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child.buildChildren(context, allNodes);
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}
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}
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/**
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* Mitigates https://github.com/GeyserMC/Geyser/issues/3411. Not a perfect solution.
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*/
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private static String getEnumDataName(CommandNode node) {
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if (node.getProperties() instanceof ResourceProperties properties) {
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String registryKey = properties.getRegistryKey();
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int identifierSplit = registryKey.indexOf(':');
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if (identifierSplit != -1) {
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return registryKey.substring(identifierSplit);
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}
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return registryKey;
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}
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return node.getParser().name();
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}
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/**
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* Comparing CommandNode type a and b, determine if they are in the same overload.
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* <p>
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* Take the <code>gamerule</code> command, and let's present three "subcommands" you can perform:
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*
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* <ul>
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* <li><code>gamerule doDaylightCycle true</code></li>
|
|
* <li><code>gamerule announceAdvancements false</code></li>
|
|
* <li><code>gamerule randomTickSpeed 3</code></li>
|
|
* </ul>
|
|
*
|
|
* While all three of them are indeed part of the same command, the command setting randomTickSpeed parses an int,
|
|
* while the others use boolean. In Bedrock, this should be presented as a separate overload to indicate that this
|
|
* does something a little different.
|
|
* <p>
|
|
* Therefore, this function will return <code>true</code> if the first two are compared, as they use the same
|
|
* parsers. If the third is compared with either of the others, this function will return <code>false</code>.
|
|
* <p>
|
|
* Here's an example of how the above would be presented to Bedrock (as of 1.16.200). Notice how the top two <code>CommandParamData</code>
|
|
* classes of each array are identical in type, but the following class is different:
|
|
* <pre>
|
|
* overloads=[
|
|
* [
|
|
* CommandParamData(name=doDaylightCycle, optional=false, enumData=CommandEnumData(name=announceAdvancements, values=[announceAdvancements, doDaylightCycle], isSoft=false), type=STRING, postfix=null, options=[])
|
|
* CommandParamData(name=value, optional=false, enumData=CommandEnumData(name=value, values=[true, false], isSoft=false), type=null, postfix=null, options=[])
|
|
* ]
|
|
* [
|
|
* CommandParamData(name=randomTickSpeed, optional=false, enumData=CommandEnumData(name=randomTickSpeed, values=[randomTickSpeed], isSoft=false), type=STRING, postfix=null, options=[])
|
|
* CommandParamData(name=value, optional=false, enumData=null, type=INT, postfix=null, options=[])
|
|
* ]
|
|
* ]
|
|
* </pre>
|
|
*
|
|
* @return if these two can be merged into one overload.
|
|
*/
|
|
private boolean isCompatible(CommandNode[] allNodes, CommandNode a, CommandNode b) {
|
|
if (a == b) return true;
|
|
if (a.getParser() != b.getParser()) return false;
|
|
if (a.getChildIndices().length != b.getChildIndices().length) return false;
|
|
|
|
for (int i = 0; i < a.getChildIndices().length; i++) {
|
|
boolean hasSimilarity = false;
|
|
CommandNode a1 = allNodes[a.getChildIndices()[i]];
|
|
// Search "b" until we find a child that matches this one
|
|
for (int j = 0; j < b.getChildIndices().length; j++) {
|
|
if (isCompatible(allNodes, a1, allNodes[b.getChildIndices()[j]])) {
|
|
hasSimilarity = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!hasSimilarity) {
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Get the tree of every parameter node (recursive)
|
|
*
|
|
* @return List of parameter options arrays for the command
|
|
*/
|
|
public List<CommandParamData[]> getTree() {
|
|
List<CommandParamData[]> treeParamData = new ArrayList<>();
|
|
|
|
for (ParamInfo child : children) {
|
|
// Get the tree from the child
|
|
List<CommandParamData[]> childTree = child.getTree();
|
|
|
|
// Un-pack the tree append the child node to it and push into the list
|
|
for (CommandParamData[] subChild : childTree) {
|
|
CommandParamData[] tmpTree = new CommandParamData[subChild.length + 1];
|
|
tmpTree[0] = child.getParamData();
|
|
System.arraycopy(subChild, 0, tmpTree, 1, subChild.length);
|
|
|
|
treeParamData.add(tmpTree);
|
|
}
|
|
|
|
// If we have no more child parameters just the child
|
|
if (childTree.size() == 0) {
|
|
treeParamData.add(new CommandParamData[] { child.getParamData() });
|
|
}
|
|
}
|
|
|
|
return treeParamData;
|
|
}
|
|
}
|
|
}
|