190 lines
7.1 KiB
Java
190 lines
7.1 KiB
Java
/*
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* This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
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* Copyright (C) 2016-2021 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 java.util.HashMap;
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import java.util.LinkedList;
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import java.util.List;
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import java.util.Locale;
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import java.util.Map;
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public class StairConnectionHandler extends ConnectionHandler {
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private static final Map<Integer, StairData> stairDataMap = new HashMap<>();
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private static final Map<Short, Integer> connectedBlocks = new HashMap<>();
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static ConnectionData.ConnectorInitAction init() {
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final List<String> baseStairs = new LinkedList<>();
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baseStairs.add("minecraft:oak_stairs");
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baseStairs.add("minecraft:cobblestone_stairs");
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baseStairs.add("minecraft:brick_stairs");
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baseStairs.add("minecraft:stone_brick_stairs");
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baseStairs.add("minecraft:nether_brick_stairs");
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baseStairs.add("minecraft:sandstone_stairs");
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baseStairs.add("minecraft:spruce_stairs");
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baseStairs.add("minecraft:birch_stairs");
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baseStairs.add("minecraft:jungle_stairs");
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baseStairs.add("minecraft:quartz_stairs");
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baseStairs.add("minecraft:acacia_stairs");
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baseStairs.add("minecraft:dark_oak_stairs");
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baseStairs.add("minecraft:red_sandstone_stairs");
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baseStairs.add("minecraft:purpur_stairs");
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baseStairs.add("minecraft:prismarine_stairs");
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baseStairs.add("minecraft:prismarine_brick_stairs");
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baseStairs.add("minecraft:dark_prismarine_stairs");
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final StairConnectionHandler connectionHandler = new StairConnectionHandler();
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return blockData -> {
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int type = baseStairs.indexOf(blockData.getMinecraftKey());
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if (type == -1) return;
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if (blockData.getValue("waterlogged").equals("true")) return;
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byte shape;
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switch (blockData.getValue("shape")) {
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case "straight":
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shape = 0;
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break;
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case "inner_left":
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shape = 1;
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break;
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case "inner_right":
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shape = 2;
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break;
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case "outer_left":
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shape = 3;
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break;
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case "outer_right":
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shape = 4;
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break;
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default:
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return;
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}
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StairData stairData = new StairData(
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blockData.getValue("half").equals("bottom"),
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shape, (byte) type,
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BlockFace.valueOf(blockData.getValue("facing").toUpperCase(Locale.ROOT))
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);
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stairDataMap.put(blockData.getSavedBlockStateId(), stairData);
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connectedBlocks.put(getStates(stairData), blockData.getSavedBlockStateId());
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ConnectionData.connectionHandlerMap.put(blockData.getSavedBlockStateId(), connectionHandler);
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};
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}
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private static short getStates(StairData stairData) {
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short s = 0;
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if (stairData.isBottom()) s |= 1;
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s |= stairData.getShape() << 1;
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s |= stairData.getType() << 4;
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s |= stairData.getFacing().ordinal() << 9;
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return s;
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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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StairData stairData = stairDataMap.get(blockState);
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if (stairData == null) return blockState;
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short s = 0;
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if (stairData.isBottom()) s |= 1;
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s |= getShape(user, position, stairData) << 1;
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s |= stairData.getType() << 4;
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s |= stairData.getFacing().ordinal() << 9;
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Integer newBlockState = connectedBlocks.get(s);
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return newBlockState == null ? blockState : newBlockState;
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}
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private int getShape(UserConnection user, Position position, StairData stair) {
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BlockFace facing = stair.getFacing();
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StairData relativeStair = stairDataMap.get(getBlockData(user, position.getRelative(facing)));
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if (relativeStair != null && relativeStair.isBottom() == stair.isBottom()) {
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BlockFace facing2 = relativeStair.getFacing();
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if (facing.axis() != facing2.axis() && checkOpposite(user, stair, position, facing2.opposite())) {
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return facing2 == rotateAntiClockwise(facing) ? 3 : 4; // outer_left : outer_right
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}
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}
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relativeStair = stairDataMap.get(getBlockData(user, position.getRelative(facing.opposite())));
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if (relativeStair != null && relativeStair.isBottom() == stair.isBottom()) {
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BlockFace facing2 = relativeStair.getFacing();
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if (facing.axis() != facing2.axis() && checkOpposite(user, stair, position, facing2)) {
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return facing2 == rotateAntiClockwise(facing) ? 1 : 2; // inner_left : inner_right
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}
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}
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return 0; // straight
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}
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private boolean checkOpposite(UserConnection user, StairData stair, Position position, BlockFace face) {
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StairData relativeStair = stairDataMap.get(getBlockData(user, position.getRelative(face)));
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return relativeStair == null || relativeStair.getFacing() != stair.getFacing() || relativeStair.isBottom() != stair.isBottom();
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}
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private BlockFace rotateAntiClockwise(BlockFace face) {
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switch (face) {
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case NORTH:
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return BlockFace.WEST;
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case SOUTH:
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return BlockFace.EAST;
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case EAST:
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return BlockFace.NORTH;
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case WEST:
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return BlockFace.SOUTH;
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default:
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return face;
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}
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}
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private static final class StairData {
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private final boolean bottom;
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private final byte shape, type;
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private final BlockFace facing;
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private StairData(boolean bottom, byte shape, byte type, BlockFace facing) {
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this.bottom = bottom;
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this.shape = shape;
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this.type = type;
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this.facing = facing;
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}
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public boolean isBottom() {
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return bottom;
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}
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public byte getShape() {
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return shape;
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}
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public byte getType() {
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return type;
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}
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public BlockFace getFacing() {
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return facing;
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}
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}
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}
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