James Seibel
105 lines
2.4 KiB
Java
105 lines
2.4 KiB
Java
/*
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* This file is part of the LOD Mod, licensed under the GNU GPL v3 License.
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*
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* Copyright (C) 2020 James Seibel
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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, version 3.
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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 <https://www.gnu.org/licenses/>.
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*/
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package com.seibel.lod.objects;
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/**
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* A LodRegion is the a 32x32
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* 2D array of LodChunk objects.
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* Each LodRegion corresponds to
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* one file in the file system.
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*
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* @author James Seibel
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* @version 6-12-2021
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*/
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public class LodRegion
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{
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/** number of chunks wide */
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public static final int SIZE = 32;
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/** X coordinate of this region */
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public final int x;
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/** Z coordinate of this region */
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public final int z;
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private LodChunk chunks[][];
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public LodRegion(int regionX, int regionZ)
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{
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x = regionX;
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z = regionZ;
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chunks = new LodChunk[SIZE][SIZE];
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}
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/**
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* Add the given LOD to this region at the coordinate
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* stored in the LOD. If an LOD already exists at the given
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* coordinates it will be overwritten.
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*/
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public void addLod(LodChunk lod)
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{
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// we use ABS since LODs can be negative, but if they are
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// the region will negative first, therefore we don't have to
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// store the LOD chunks at negative indexes since we search
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// LOD the region first
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int xIndex = Math.abs(lod.x % SIZE);
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int zIndex = Math.abs(lod.z % SIZE);
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chunks[xIndex][zIndex] = lod;
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}
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/**
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* Get the LodChunk at the given X and Z coordinates
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* in this region.
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* <br>
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* Returns null if the LodChunk doesn't exist or
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* is outside the loaded area.
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*/
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public LodChunk getLod(int chunkX, int chunkZ)
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{
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// since we add LOD's with ABS, we get them the same way
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int arrayX = Math.abs(chunkX % SIZE);
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int arrayZ = Math.abs(chunkZ % SIZE);
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return chunks[arrayX][arrayZ];
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}
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/**
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* Returns all LodChunks in this region
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*/
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public LodChunk[][] getAllLods()
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{
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return chunks;
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}
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@Override
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public String toString()
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{
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String s = "";
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s += "x: " + x + " z: " + z + "\t";
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return s;
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}
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}
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