2019-08-15 19:21:24 +00:00
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/*
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* WorldEdit, a Minecraft world manipulation toolkit
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* Copyright (C) sk89q <http://www.sk89q.com>
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* Copyright (C) WorldEdit team and contributors
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*
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2020-08-25 01:31:47 +00:00
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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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2019-08-15 19:21:24 +00:00
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* (at your option) any later version.
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*
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2020-08-25 01:31:47 +00:00
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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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2019-08-15 19:21:24 +00:00
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*
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2020-08-25 01:31:47 +00:00
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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 <https://www.gnu.org/licenses/>.
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2019-08-15 19:21:24 +00:00
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*/
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package com.sk89q.worldedit.internal.block;
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import com.sk89q.worldedit.world.block.BlockState;
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2020-03-24 00:56:13 +00:00
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import com.sk89q.worldedit.world.registry.BlockRegistry;
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2020-03-10 21:22:53 +00:00
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import it.unimi.dsi.fastutil.ints.Int2ObjectOpenHashMap;
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2020-03-24 00:56:13 +00:00
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import java.util.BitSet;
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import java.util.OptionalInt;
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2020-07-14 02:50:59 +00:00
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import javax.annotation.Nullable;
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2020-03-24 00:56:13 +00:00
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import static com.google.common.base.Preconditions.checkState;
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2019-08-15 19:21:24 +00:00
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public final class BlockStateIdAccess {
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2020-03-10 21:22:53 +00:00
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private static final int INVALID_ID = -1;
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private static final int EXPECTED_BLOCK_COUNT = 2 << 13;
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private static final Int2ObjectOpenHashMap<BlockState> TO_STATE =
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new Int2ObjectOpenHashMap<>(EXPECTED_BLOCK_COUNT);
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2020-03-24 00:56:13 +00:00
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2020-03-10 21:22:53 +00:00
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static {
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TO_STATE.defaultReturnValue(null);
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}
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public interface BlockStateInternalId {
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int getInternalId(BlockState blockState);
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2020-10-05 17:41:41 +00:00
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2020-03-10 21:22:53 +00:00
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void setInternalId(BlockState blockState, int internalId);
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}
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2020-03-24 00:56:13 +00:00
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2020-03-10 21:22:53 +00:00
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private static BlockStateInternalId blockStateInternalId;
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2020-03-10 21:22:53 +00:00
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public static void setBlockStateInternalId(BlockStateInternalId blockStateInternalId) {
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BlockStateIdAccess.blockStateInternalId = blockStateInternalId;
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}
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/**
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2020-10-05 17:41:41 +00:00
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* An invalid internal ID, for verification purposes.
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2020-03-10 21:22:53 +00:00
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* @return an internal ID which is never valid
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*/
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public static int invalidId() {
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return INVALID_ID;
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}
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public static boolean isValidInternalId(int internalId) {
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return internalId != INVALID_ID;
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}
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2020-03-24 00:56:13 +00:00
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2020-03-10 21:22:53 +00:00
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public static int getBlockStateId(BlockState holder) {
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return holder.getOrdinal();
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//return blockStateInternalId.getInternalId(holder);
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2019-08-15 19:21:24 +00:00
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}
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2020-10-05 17:41:41 +00:00
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@Nullable
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public static BlockState getBlockStateById(int id) {
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2020-03-24 00:56:13 +00:00
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return BlockState.getFromOrdinal(id);
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2019-08-15 19:21:24 +00:00
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}
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/**
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* For platforms that don't have an internal ID system,
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* {@link BlockRegistry#getInternalBlockStateId(BlockState)} will return
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* {@link OptionalInt#empty()}. In those cases, we will use our own ID system,
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* since it's useful for other entries as well.
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2020-03-24 00:56:13 +00:00
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*
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2019-08-15 19:21:24 +00:00
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* @return an unused ID in WorldEdit's ID tracker
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2020-03-24 00:56:13 +00:00
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*/
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2019-08-15 19:21:24 +00:00
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private static int provideUnusedWorldEditId() {
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return usedIds.nextClearBit(0);
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}
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private static final BitSet usedIds = new BitSet();
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2020-03-10 21:22:53 +00:00
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public static void register(BlockState blockState, int id) {
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int i = isValidInternalId(id) ? id : provideUnusedWorldEditId();
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BlockState existing = getBlockStateById(id);
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2019-08-15 19:21:24 +00:00
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checkState(existing == null || existing == blockState,
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"BlockState %s is using the same block ID (%s) as BlockState %s",
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blockState, i, existing);
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2020-03-10 21:22:53 +00:00
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blockStateInternalId.setInternalId(blockState, i);
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TO_STATE.put(i, blockState);
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2019-08-15 19:21:24 +00:00
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usedIds.set(i);
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}
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public static void clear() {
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2020-03-10 21:22:53 +00:00
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for (BlockState value : TO_STATE.values()) {
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blockStateInternalId.setInternalId(value, invalidId());
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}
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TO_STATE.clear();
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2019-08-15 19:21:24 +00:00
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usedIds.clear();
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}
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2020-03-19 17:08:25 +00:00
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private BlockStateIdAccess() {
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}
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2020-03-24 00:56:13 +00:00
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2019-08-15 19:21:24 +00:00
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}
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