/** Initialize a single chunk from the chunk generator. */
private void generateChunk(GlowChunk chunk, int x, int z) {
Random random = new Random((long) x * 341873128712L + (long) z * 132897987541L);
BiomeGrid biomes = new BiomeGrid();
int[] biomeValues =
biomeGrid[0].generateValues(
x * GlowChunk.WIDTH, z * GlowChunk.HEIGHT, GlowChunk.WIDTH, GlowChunk.HEIGHT);
for (int i = 0; i < biomeValues.length; i++) {
biomes.biomes[i] = (byte) biomeValues[i];
}
// extended sections with data
if (generator instanceof GlowChunkGenerator) {
short[][] extSections =
((GlowChunkGenerator) generator)
.generateExtBlockSectionsWithData(world, random, x, z, biomes);
if (extSections != null) {
GlowChunk.ChunkSection[] sections = new GlowChunk.ChunkSection[extSections.length];
for (int i = 0; i < extSections.length; ++i) {
// this is sort of messy.
if (extSections[i] != null) {
sections[i] = new GlowChunk.ChunkSection();
for (int j = 0; j < extSections[i].length; ++j) {
sections[i].types[j] = (char) extSections[i][j];
}
sections[i].recount();
}
}
chunk.initializeSections(sections);
chunk.setBiomes(biomes.biomes);
chunk.automaticHeightMap();
return;
}
}
// extended sections
short[][] extSections = generator.generateExtBlockSections(world, random, x, z, biomes);
if (extSections != null) {
GlowChunk.ChunkSection[] sections = new GlowChunk.ChunkSection[extSections.length];
for (int i = 0; i < extSections.length; ++i) {
// this is sort of messy.
if (extSections[i] != null) {
sections[i] = new GlowChunk.ChunkSection();
for (int j = 0; j < extSections[i].length; ++j) {
sections[i].types[j] = (char) (extSections[i][j] << 4);
}
sections[i].recount();
}
}
chunk.initializeSections(sections);
chunk.setBiomes(biomes.biomes);
chunk.automaticHeightMap();
return;
}
// normal sections
byte[][] blockSections = generator.generateBlockSections(world, random, x, z, biomes);
if (blockSections != null) {
GlowChunk.ChunkSection[] sections = new GlowChunk.ChunkSection[blockSections.length];
for (int i = 0; i < blockSections.length; ++i) {
// this is sort of messy.
if (blockSections[i] != null) {
sections[i] = new GlowChunk.ChunkSection();
for (int j = 0; j < blockSections[i].length; ++j) {
sections[i].types[j] = (char) (blockSections[i][j] << 4);
}
sections[i].recount();
}
}
chunk.initializeSections(sections);
chunk.setBiomes(biomes.biomes);
chunk.automaticHeightMap();
return;
}
// deprecated flat generation
byte[] types = generator.generate(world, random, x, z);
GlowChunk.ChunkSection[] sections = new GlowChunk.ChunkSection[8];
for (int sy = 0; sy < sections.length; ++sy) {
GlowChunk.ChunkSection sec = new GlowChunk.ChunkSection();
int by = 16 * sy;
for (int cx = 0; cx < 16; ++cx) {
for (int cz = 0; cz < 16; ++cz) {
for (int cy = by; cy < by + 16; ++cy) {
char type = (char) types[(cx * 16 + cz) * 128 + cy];
sec.types[sec.index(cx, cy, cz)] = (char) (type << 4);
}
}
}
sec.recount();
sections[sy] = sec;
}
chunk.initializeSections(sections);
chunk.setBiomes(biomes.biomes);
chunk.automaticHeightMap();
}
