104 lines
4.5 KiB
Java
104 lines
4.5 KiB
Java
/*
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* This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
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* Copyright (C) 2016-2024 ViaVersion and contributors
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package com.viaversion.viaversion.protocols.protocol1_13to1_12_2.blockconnections;
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import com.viaversion.viaversion.api.connection.UserConnection;
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import com.viaversion.viaversion.api.minecraft.BlockFace;
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import com.viaversion.viaversion.api.minecraft.Position;
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import it.unimi.dsi.fastutil.ints.Int2IntMap;
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import it.unimi.dsi.fastutil.ints.Int2IntOpenHashMap;
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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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public class RedstoneConnectionHandler extends ConnectionHandler {
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private static final IntSet REDSTONE = new IntOpenHashSet();
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private static final Int2IntMap CONNECTED_BLOCK_STATES = new Int2IntOpenHashMap(1296);
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private static final Int2IntMap POWER_MAPPINGS = new Int2IntOpenHashMap(1296);
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private static final int BLOCK_CONNECTION_TYPE_ID = BlockData.connectionTypeId("redstone");
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static ConnectionData.ConnectorInitAction init() {
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final RedstoneConnectionHandler connectionHandler = new RedstoneConnectionHandler();
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final String redstoneKey = "minecraft:redstone_wire";
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return blockData -> {
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if (!redstoneKey.equals(blockData.getMinecraftKey())) {
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return;
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}
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REDSTONE.add(blockData.getSavedBlockStateId());
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ConnectionData.connectionHandlerMap.put(blockData.getSavedBlockStateId(), connectionHandler);
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CONNECTED_BLOCK_STATES.put(getStates(blockData), blockData.getSavedBlockStateId());
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POWER_MAPPINGS.put(blockData.getSavedBlockStateId(), Integer.parseInt(blockData.getValue("power")));
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};
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}
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private static short getStates(WrappedBlockData data) {
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short b = 0;
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b |= getState(data.getValue("east"));
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b |= getState(data.getValue("north")) << 2;
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b |= getState(data.getValue("south")) << 4;
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b |= getState(data.getValue("west")) << 6;
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b |= Integer.parseInt(data.getValue("power")) << 8;
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return b;
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}
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private static int getState(String value) {
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switch (value) {
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case "none":
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default:
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return 0;
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case "side":
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return 1;
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case "up":
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return 2;
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}
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}
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@Override
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public int connect(UserConnection user, Position position, int blockState) {
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short b = 0;
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b |= connects(user, position, BlockFace.EAST);
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b |= connects(user, position, BlockFace.NORTH) << 2;
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b |= connects(user, position, BlockFace.SOUTH) << 4;
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b |= connects(user, position, BlockFace.WEST) << 6;
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b |= POWER_MAPPINGS.get(blockState) << 8;
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return CONNECTED_BLOCK_STATES.getOrDefault(b, blockState);
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}
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private int connects(UserConnection user, Position position, BlockFace side) {
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final Position relative = position.getRelative(side);
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int blockState = getBlockData(user, relative);
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if (connects(side, blockState)) {
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return 1; //side
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}
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int up = getBlockData(user, relative.getRelative(BlockFace.TOP));
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if (REDSTONE.contains(up) && !ConnectionData.OCCLUDING_STATES.contains(getBlockData(user, position.getRelative(BlockFace.TOP)))) {
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return 2; //"up"
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}
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int down = getBlockData(user, relative.getRelative(BlockFace.BOTTOM));
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if (REDSTONE.contains(down) && !ConnectionData.OCCLUDING_STATES.contains(getBlockData(user, relative))) {
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return 1; //side
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}
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return 0; //none
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}
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private boolean connects(BlockFace side, int blockState) {
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final BlockData blockData = ConnectionData.blockConnectionData.get(blockState);
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return blockData != null && blockData.connectsTo(BLOCK_CONNECTION_TYPE_ID, side.opposite(), false);
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}
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}
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