83 lines
2.2 KiB
Java
83 lines
2.2 KiB
Java
/*
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* Copyright (C) 2004-2015 L2J Server
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*
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* This file is part of L2J Server.
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*
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* L2J Server 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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* L2J Server 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 GNU
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* 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.l2jserver.commons.geodriver.blocks;
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import java.nio.ByteBuffer;
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import com.l2jserver.commons.geodriver.IBlock;
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/**
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* @author HorridoJoho
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*/
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public final class ComplexBlock implements IBlock
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{
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private final short[] _data;
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public ComplexBlock(ByteBuffer bb)
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{
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_data = new short[IBlock.BLOCK_CELLS];
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for (int cellOffset = 0; cellOffset < IBlock.BLOCK_CELLS; cellOffset++)
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{
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_data[cellOffset] = bb.getShort();
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}
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}
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private short _getCellData(int geoX, int geoY)
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{
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return _data[((geoX % IBlock.BLOCK_CELLS_X) * IBlock.BLOCK_CELLS_Y) + (geoY % IBlock.BLOCK_CELLS_Y)];
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}
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private byte _getCellNSWE(int geoX, int geoY)
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{
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return (byte) (_getCellData(geoX, geoY) & 0x000F);
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}
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private int _getCellHeight(int geoX, int geoY)
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{
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short height = (short) (_getCellData(geoX, geoY) & 0x0FFF0);
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return height >> 1;
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}
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@Override
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public boolean checkNearestNswe(int geoX, int geoY, int worldZ, int nswe)
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{
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return (_getCellNSWE(geoX, geoY) & nswe) == nswe;
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}
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@Override
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public int getNearestZ(int geoX, int geoY, int worldZ)
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{
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return _getCellHeight(geoX, geoY);
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}
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@Override
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public int getNextLowerZ(int geoX, int geoY, int worldZ)
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{
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int cellHeight = _getCellHeight(geoX, geoY);
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return cellHeight <= worldZ ? cellHeight : worldZ;
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}
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@Override
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public int getNextHigherZ(int geoX, int geoY, int worldZ)
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{
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int cellHeight = _getCellHeight(geoX, geoY);
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return cellHeight >= worldZ ? cellHeight : worldZ;
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}
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}
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