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Jesse Boyd
2019-05-12 23:32:04 +10:00
parent 459629a2f2
commit c797dcb194
61 changed files with 2075 additions and 793 deletions
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94
worldedit-core/src/legacy/java/com/sk89q/worldedit/blocks/LazyBlock.java
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/*
* WorldEdit, a Minecraft world manipulation toolkit
* Copyright (C) sk89q <http://www.sk89q.com>
* Copyright (C) WorldEdit team and contributors
*
* This program is free software: you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by the
* Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
* for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package com.sk89q.worldedit.blocks;
import static com.google.common.base.Preconditions.checkNotNull;
import com.sk89q.jnbt.CompoundTag;
import com.sk89q.worldedit.world.block.BaseBlock;
import com.sk89q.worldedit.world.block.BlockState;
import com.sk89q.worldedit.world.block.BlockStateHolder;
import com.sk89q.worldedit.world.block.BlockType;
import com.sk89q.worldedit.extent.Extent;
import com.sk89q.worldedit.math.BlockVector3;
/**
* A implementation of a lazy block for {@link Extent#getLazyBlock(Vector)}
* that takes the block's ID and metadata, but will defer loading of NBT
* data until time of access.
*
* <p>NBT data is later loaded using a call to {@link Extent#getBlock(Vector)}
* with a stored {@link Extent} and location.</p>
*
* <p>All mutators on this object will throw an
* {@link UnsupportedOperationException}.</p>
*/
public class LazyBlock extends BaseBlock {
private final Extent extent;
private final BlockVector3 position;
private boolean loaded = false;
/**
* Create a new lazy block.
*
* @param type the block type
* @param extent the extent to later load the full block data from
* @param position the position to later load the full block data from
*/
public LazyBlock(BlockType type, Extent extent, BlockVector3 position) {
super(type);
checkNotNull(extent);
checkNotNull(position);
this.extent = extent;
this.position = position;
}
/**
* Create a new lazy block.
*
* @param state the block state
* @param extent the extent to later load the full block data from
* @param position the position to later load the full block data from
*/
public LazyBlock(BlockState state, Extent extent, BlockVector3 position) {
super(state);
checkNotNull(extent);
checkNotNull(position);
this.extent = extent;
this.position = position;
}
@Override
public CompoundTag getNbtData() {
if (!loaded) {
BaseBlock loadedBlock = extent.getFullBlock(position);
this.nbtData = loadedBlock.getNbtData();
loaded = true;
}
return super.getNbtData();
}
@Override
public void setNbtData(CompoundTag nbtData) {
throw new UnsupportedOperationException("This object is immutable");
}
}