@Override
public void setBlockMetadataAt(int metadata, BlockLocation blockLocation) {
ChunkLocation location = new ChunkLocation(blockLocation);
BlockLocation chunkBlockOffset = new BlockLocation(location);
Chunk chunk = getChunkAt(location);
if (chunk == null) return;
chunk.setBlockMetadataAt(
metadata,
blockLocation.getX() - chunkBlockOffset.getX(),
blockLocation.getY() - chunkBlockOffset.getY(),
blockLocation.getZ() - chunkBlockOffset.getZ());
}
@Override
public Block getBlockAt(BlockLocation location) {
ChunkLocation chunkLocation = new ChunkLocation(location);
Chunk chunk = getChunkAt(chunkLocation);
if (chunk == null) return null;
BlockLocation chunkBlockOffset = new BlockLocation(chunkLocation);
int chunkOffsetX = location.getX() - chunkBlockOffset.getX();
int chunkOffsetY = location.getY() - chunkBlockOffset.getY();
int chunkOffsetZ = location.getZ() - chunkBlockOffset.getZ();
int id = chunk.getBlockIdAt(chunkOffsetX, chunkOffsetY, chunkOffsetZ);
int metadata = chunk.getBlockMetadataAt(chunkOffsetX, chunkOffsetY, chunkOffsetZ);
return new Block(this, chunk, location, id, metadata);
}
@Override
public int getBlockMetadataAt(BlockLocation blockLocation) {
ChunkLocation location = new ChunkLocation(blockLocation);
BlockLocation chunkBlockOffset = new BlockLocation(location);
Chunk chunk = getChunkAt(location);
if (chunk == null) return 0;
int metadata =
chunk.getBlockMetadataAt(
blockLocation.getX() - chunkBlockOffset.getX(),
blockLocation.getY() - chunkBlockOffset.getY(),
blockLocation.getZ() - chunkBlockOffset.getZ());
return metadata;
}
public static NetworkChunkData chunksToData(ParsedChunkData chunks) {
int chunkMask = 0;
boolean fullChunk = chunks.getBiomes() != null;
boolean sky = false;
int length = fullChunk ? chunks.getBiomes().length : 0;
byte[] data = null;
int pos = 0;
ShortBuffer buf = null;
// 0 = Determine length and masks.
// 1 = Add blocks.
// 2 = Add block light.
// 3 = Add sky light.
for (int pass = 0; pass < 4; pass++) {
for (int ind = 0; ind < chunks.getChunks().length; ++ind) {
Chunk chunk = chunks.getChunks()[ind];
if (chunk != null && (!fullChunk || !chunk.isEmpty())) {
if (pass == 0) {
chunkMask |= 1 << ind;
length += chunk.getBlocks().getData().length * 2;
length += chunk.getBlockLight().getData().length;
if (chunk.getSkyLight() != null) {
length += chunk.getSkyLight().getData().length;
}
}
if (pass == 1) {
short blocks[] = chunk.getBlocks().getData();
buf.position(pos / 2);
buf.put(blocks, 0, blocks.length);
pos += blocks.length * 2;
}
if (pass == 2) {
byte blocklight[] = chunk.getBlockLight().getData();
System.arraycopy(blocklight, 0, data, pos, blocklight.length);
pos += blocklight.length;
}
if (pass == 3 && chunk.getSkyLight() != null) {
byte skylight[] = chunk.getSkyLight().getData();
System.arraycopy(skylight, 0, data, pos, skylight.length);
pos += skylight.length;
sky = true;
}
}
}
if (pass == 0) {
data = new byte[length];
buf = ByteBuffer.wrap(data).order(ByteOrder.LITTLE_ENDIAN).asShortBuffer();
}
}
// Add biomes.
if (fullChunk) {
System.arraycopy(chunks.getBiomes(), 0, data, pos, chunks.getBiomes().length);
pos += chunks.getBiomes().length;
}
return new NetworkChunkData(chunkMask, fullChunk, sky, data);
}
/** Reads a WAVE Chunk. */
protected boolean readChunk(RepInfo info) throws IOException {
Chunk chunk = null;
ChunkHeader chunkh = new ChunkHeader(this, info);
if (!chunkh.readHeader(_dstream)) {
return false;
}
int chunkSize = (int) chunkh.getSize();
bytesRemaining -= chunkSize + 8;
if (bytesRemaining < 0) {
info.setMessage(new ErrorMessage("Invalid chunk size", _nByte));
return false;
}
String id = chunkh.getID();
if ("fmt ".equals(id)) {
if (formatChunkSeen) {
dupChunkError(info, "Format");
}
chunk = new FormatChunk(this, chunkh, _dstream);
formatChunkSeen = true;
} else if ("data".equals(id)) {
if (dataChunkSeen) {
dupChunkError(info, "Data");
}
chunk = new DataChunk(this, chunkh, _dstream);
dataChunkSeen = true;
} else if ("fact".equals(id)) {
chunk = new FactChunk(this, chunkh, _dstream);
factChunkSeen = true;
// Are multiple 'fact' chunks allowed?
} else if ("note".equals(id)) {
chunk = new NoteChunk(this, chunkh, _dstream);
// Multiple note chunks are allowed
} else if ("labl".equals(id)) {
chunk = new LabelChunk(this, chunkh, _dstream);
// Multiple label chunks are allowed
} else if ("list".equals(id)) {
chunk = new AssocDataListChunk(this, chunkh, _dstream, info);
// Are multiple chunks allowed? Who knows?
} else if ("LIST".equals(id)) {
chunk = new ListInfoChunk(this, chunkh, _dstream, info);
// Multiple list chunks must be OK, since there can
// be different types, e.g., an INFO list and an exif list.
} else if ("smpl".equals(id)) {
chunk = new SampleChunk(this, chunkh, _dstream);
// Multiple sample chunks are allowed -- I think
} else if ("inst".equals(id)) {
if (instrumentChunkSeen) {
dupChunkError(info, "Instrument");
}
chunk = new InstrumentChunk(this, chunkh, _dstream);
// Only one instrument chunk is allowed
instrumentChunkSeen = true;
} else if ("mext".equals(id)) {
if (mpegChunkSeen) {
dupChunkError(info, "MPEG");
}
chunk = new MpegChunk(this, chunkh, _dstream);
// I think only one MPEG chunk is allowed
mpegChunkSeen = true;
} else if ("cart".equals(id)) {
if (cartChunkSeen) {
dupChunkError(info, "Cart");
}
chunk = new CartChunk(this, chunkh, _dstream);
cartChunkSeen = true;
} else if ("bext".equals(id)) {
if (broadcastExtChunkSeen) {
dupChunkError(info, "Broadcast Audio Extension");
}
chunk = new BroadcastExtChunk(this, chunkh, _dstream);
broadcastExtChunkSeen = true;
} else if ("levl".equals(id)) {
if (peakChunkSeen) {
dupChunkError(info, "Peak Envelope");
}
chunk = new PeakEnvelopeChunk(this, chunkh, _dstream);
peakChunkSeen = true;
} else if ("link".equals(id)) {
if (linkChunkSeen) {
dupChunkError(info, "Link");
}
chunk = new LinkChunk(this, chunkh, _dstream);
linkChunkSeen = true;
} else if ("cue ".equals(id)) {
if (cueChunkSeen) {
dupChunkError(info, "Cue");
}
chunk = new CueChunk(this, chunkh, _dstream);
cueChunkSeen = true;
} else {
info.setMessage(new InfoMessage("Chunk type '" + id + "' ignored", _nByte));
}
if (chunk != null) {
if (!chunk.readChunk(info)) {
return false;
}
} else {
// Other chunk types are legal, just skip over them
skipBytes(_dstream, chunkSize, this);
}
if ((chunkSize & 1) != 0) {
// Must come out to an even byte boundary
skipBytes(_dstream, 1, this);
--bytesRemaining;
}
return true;
}
