/** Populate a single chunk if needed. */
private void populateChunk(int x, int z, boolean force) {
GlowChunk chunk = getChunk(x, z);
// cancel out if it's already populated
if (chunk.isPopulated()) {
return;
}
// cancel out if the 3x3 around it isn't available
for (int x2 = x - 1; x2 <= x + 1; ++x2) {
for (int z2 = z - 1; z2 <= z + 1; ++z2) {
if (!getChunk(x2, z2).isLoaded() && (!force || !loadChunk(x2, z2, true))) {
return;
}
}
}
// it might have loaded since before, so check again that it's not already populated
if (chunk.isPopulated()) {
return;
}
chunk.setPopulated(true);
Random random = new Random(world.getSeed());
long xRand = random.nextLong() / 2 * 2 + 1;
long zRand = random.nextLong() / 2 * 2 + 1;
random.setSeed((long) x * xRand + (long) z * zRand ^ world.getSeed());
for (BlockPopulator p : world.getPopulators()) {
p.populate(world, random, chunk);
}
EventFactory.callEvent(new ChunkPopulateEvent(chunk));
}
/**
* Gets a list of loaded chunks.
*
* @return The currently loaded chunks.
*/
public GlowChunk[] getLoadedChunks() {
ArrayList<GlowChunk> result = new ArrayList<>();
for (GlowChunk chunk : chunks.values()) {
if (chunk.isLoaded()) {
result.add(chunk);
}
}
return result.toArray(new GlowChunk[result.size()]);
}
/**
* Forces generation of the given chunk.
*
* @param x The X coordinate.
* @param z The Z coordinate.
* @return Whether the chunk was successfully regenerated.
*/
public boolean forceRegeneration(int x, int z) {
GlowChunk chunk = getChunk(x, z);
if (chunk == null || !chunk.unload(false, false)) {
return false;
}
chunk.setPopulated(false);
try {
generateChunk(chunk, x, z);
populateChunk(x, z, false); // should this be forced?
} catch (Throwable ex) {
GlowServer.logger.log(
Level.SEVERE, "Error while regenerating chunk (" + x + "," + z + ")", ex);
return false;
}
return true;
}
/**
* Performs the save for the given chunk using the storage provider.
*
* @param chunk The chunk to save.
*/
public boolean performSave(GlowChunk chunk) {
if (chunk.isLoaded()) {
try {
service.write(chunk);
return true;
} catch (IOException ex) {
GlowServer.logger.log(Level.SEVERE, "Error while saving " + chunk, ex);
return false;
}
}
return false;
}
/**
* Call the ChunkIoService to load a chunk, optionally generating the chunk.
*
* @param x The X coordinate of the chunk to load.
* @param z The Y coordinate of the chunk to load.
* @param generate Whether to generate the chunk if needed.
* @return True on success, false on failure.
*/
public boolean loadChunk(int x, int z, boolean generate) {
GlowChunk chunk = getChunk(x, z);
// try to load chunk
try {
if (service.read(chunk)) {
EventFactory.callEvent(new ChunkLoadEvent(chunk, false));
return true;
}
} catch (Exception e) {
GlowServer.logger.log(Level.SEVERE, "Error while loading chunk (" + x + "," + z + ")", e);
// an error in chunk reading may have left the chunk in an invalid state
// (i.e. double initialization errors), so it's forcibly unloaded here
chunk.unload(false, false);
}
// stop here if we can't generate
if (!generate) {
return false;
}
// get generating
try {
generateChunk(chunk, x, z);
} catch (Throwable ex) {
GlowServer.logger.log(Level.SEVERE, "Error while generating chunk (" + x + "," + z + ")", ex);
return false;
}
EventFactory.callEvent(new ChunkLoadEvent(chunk, true));
// right now, forcePopulate takes care of populating chunks that players actually see.
/*for (int x2 = x - 1; x2 <= x + 1; ++x2) {
for (int z2 = z - 1; z2 <= z + 1; ++z2) {
populateChunk(x2, z2, false);
}
}*/
return true;
}
/** 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();
}