92 lines
3.1 KiB
Java
92 lines
3.1 KiB
Java
/*
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* This file is part of Applied Energistics 2.
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* Copyright (c) 2013 - 2015, AlgorithmX2, All rights reserved.
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*
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* Applied Energistics 2 is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser 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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* Applied Energistics 2 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 Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with Applied Energistics 2. If not, see <http://www.gnu.org/licenses/lgpl>.
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*/
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package appeng.core.worlddata;
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import javax.annotation.Nonnull;
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import com.google.common.base.Preconditions;
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/**
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* encodes data into a common name
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*
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* @author thatsIch
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* @version rv3 - 05.06.2015
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* @since rv3 05.06.2015
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*/
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public class MeteorDataNameEncoder {
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private static final char DATA_SEPARATOR = '_';
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private static final char BASE_EXTENSION_SEPARATOR = '.';
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private static final String FILE_EXTENSION = "dat";
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private final char dataSeparator;
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@Nonnull
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private final String fileExtension;
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private final char baseExtSeparator;
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private final int bitScale;
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/**
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* @param bitScale how often the coordinates will be shifted right (will scale
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* coordinates down)
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*/
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public MeteorDataNameEncoder(final int bitScale) {
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this(DATA_SEPARATOR, BASE_EXTENSION_SEPARATOR, FILE_EXTENSION, bitScale);
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}
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private MeteorDataNameEncoder(
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final char dataSeparator,
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final char baseExtSeparator,
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@Nonnull final String fileExtension,
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final int bitScale
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) {
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Preconditions.checkNotNull(fileExtension);
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Preconditions.checkArgument(!fileExtension.isEmpty());
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Preconditions.checkArgument(bitScale >= 0);
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this.dataSeparator = dataSeparator;
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this.baseExtSeparator = baseExtSeparator;
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this.fileExtension = fileExtension;
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this.bitScale = bitScale;
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}
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/**
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* @param dimension ID of the processed dimension. Can be any integer
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* @param chunkX X coordinate of the chunk. Can be any integer
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* @param chunkZ Z coordinate of the chunk. Can be any integer
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* @return encoded file name suggestion in form of <tt>dim_x_y.dat</tt> where
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* <tt>x</tt> and <tt>y</tt> will be
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* shifted to stay conform with the vanilla chunk system
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* @since rv3 05.06.2015
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*/
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public String encode(final int dimension, final int chunkX, final int chunkZ) {
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final int shiftedX = chunkX >> this.bitScale;
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final int shiftedZ = chunkZ >> this.bitScale;
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return String.format(
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"%d%c%d%c%d%c%s",
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dimension,
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this.dataSeparator,
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shiftedX,
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this.dataSeparator,
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shiftedZ,
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this.baseExtSeparator,
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this.fileExtension
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);
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}
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}
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