forked from BLOCKFANTASY/LOOHP-Limbo
76 lines
2.0 KiB
Java
76 lines
2.0 KiB
Java
package com.loohp.limbo.World;
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import java.util.ArrayList;
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import java.util.List;
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public class LightEngineBlock extends LightEngine {
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private World world;
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private byte[][][] blockLightArray;
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public LightEngineBlock(World world) {
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blockLightArray = new byte[world.getChunkWidth() * 16][16 * 18][world.getChunkLength() * 16];
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this.world = world;
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updateWorld();
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}
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public void updateWorld() {
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blockLightArray = new byte[world.getChunkWidth() * 16][16 * 18][world.getChunkLength() * 16];
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for (int x = 0; x < world.getWidth(); x++) {
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for (int y = 0; y < 256; y++) {
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for (int z = 0; z < world.getLength(); z++) {
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updateBlock(x, y, z);
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}
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}
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}
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}
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private void updateBlock(int x, int y, int z) {
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BlockState block = world.getBlock(x, y, z);
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int lightLevel = getBlockLight(block);
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if (lightLevel > 0) {
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propergate(lightLevel, x, y, z);
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}
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}
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private void propergate(int level, int x, int y, int z) {
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if (blockLightArray[x][y + 16][z] < level) {
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blockLightArray[x][y + 16][z] = (byte) level;
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if (level > 1) {
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propergate(level - 1, x + 1, y, z);
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propergate(level - 1, x - 1, y, z);
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propergate(level - 1, x, y + 1, z);
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propergate(level - 1, x, y - 1, z);
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propergate(level - 1, x, y, z + 1);
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propergate(level - 1, x, y, z - 1);
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}
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}
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}
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public List<Byte[]> getBlockLightBitMask(int chunkX, int chunkZ) {
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List<Byte[]> subchunks = new ArrayList<>(18);
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int startX = chunkX * 16;
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int endingX = startX + 16;
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int startZ = chunkZ * 16;
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int endingZ = startZ + 16;
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for (int sub = 17; sub >= 0; sub--) {
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List<Byte> array = new ArrayList<>();
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for (int y = sub * 16; y < (sub * 16) + 16; y++) {
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for (int z = startZ; z < endingZ; z++) {
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for (int x = startX; x < endingX; x += 2) {
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int bit = blockLightArray[x][y][z];
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bit = bit << 4;
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bit |= blockLightArray[x + 1][y][z];
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array.add((byte) bit);
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}
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}
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}
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subchunks.add(array.toArray(new Byte[2048]));
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}
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return subchunks;
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}
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}
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