forked from GeyserMC/Geyser
36 lines
1.4 KiB
Java
36 lines
1.4 KiB
Java
package org.geysermc.connector.network.translators;
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import java.util.Arrays;
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//Based off of ProtocolSupport's LegacyBiomeData.java https://github.com/ProtocolSupport/ProtocolSupport/blob/b2cad35977f3fcb65bee57b9e14fc9c975f71d32/src/protocolsupport/protocol/typeremapper/legacy/LegacyBiomeData.java
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//Array index formula by https://wiki.vg/Chunk_Format
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public class BiomeTranslator {
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public static byte[] toBedrockBiome(int[] biomeData) {
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byte[] bedrockData = new byte[256];
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if(biomeData == null) {
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return bedrockData;
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}
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for (int z = 0; z < 16; z += 4) {
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for (int x = 0; x < 16; x += 4) {
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byte biomeId = biomeID(biomeData, x, z);
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fillArray(z, x, bedrockData, biomeId);
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fillArray(z + 1, x, bedrockData, biomeId);
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fillArray(z + 2, x, bedrockData, biomeId);
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fillArray(z + 3, x, bedrockData, biomeId);
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}
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}
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return bedrockData;
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}
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protected static void fillArray(int z, int x, byte[] legacyBiomeData, int biomeId) {
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int offset = (z << 4) | x;
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Arrays.fill(legacyBiomeData, offset, offset + 4, (byte) biomeId);
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}
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protected static byte biomeID(int[] biomeData, int x, int z) {
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return (byte) biomeData[((z >> 2) & 3) << 2 | ((x >> 2) & 3)];
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}
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}
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