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Added support for 4096 ID blocks (theoretically) in snapshots.

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Also cleaned up the mess that was AnvilChunk's code.
This commit is contained in:
sk89q 2012-10-20 00:54:21 -07:00
parent e08e40bce8
commit 1fb69b06f7
1 changed files with 84 additions and 40 deletions
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114
src/main/java/com/sk89q/worldedit/data/AnvilChunk.java
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@ -21,6 +21,7 @@ public class AnvilChunk implements Chunk {
private CompoundTag rootTag;
private byte[][] blocks;
private byte[][] blocksAdd;
private byte[][] data;
private int rootX;
private int rootZ;
@ -32,41 +33,65 @@ public class AnvilChunk implements Chunk {
/**
* Construct the chunk with a compound tag.
*
* @param tag
* @throws DataException
* @param world the world to construct the chunk for
* @param tag the tag to read
* @throws DataException on a data error
*/
public AnvilChunk(LocalWorld world, CompoundTag tag) throws DataException {
rootTag = tag;
this.world = world;
rootX = NBTUtils.getChildTag( rootTag.getValue(), "xPos", IntTag.class).getValue();
rootZ = NBTUtils.getChildTag( rootTag.getValue(), "zPos", IntTag.class).getValue();
rootX = NBTUtils.getChildTag(rootTag.getValue(), "xPos", IntTag.class).getValue();
rootZ = NBTUtils.getChildTag(rootTag.getValue(), "zPos", IntTag.class).getValue();
blocks = new byte[16][16 * 16 * 16];
blocksAdd = new byte[16][16 * 16 * 8];
data = new byte[16][16 * 16 * 8];
blocks = new byte[16][16*16*16];
data = new byte[16][16*16*8];
List<Tag> sections = NBTUtils.getChildTag(rootTag.getValue(), "Sections", ListTag.class).getValue();
for(Tag section : sections) {
if(!(section instanceof CompoundTag)) continue;
CompoundTag compoundsection = (CompoundTag) section;
if(!compoundsection.getValue().containsKey("Y")) continue; // Empty section.
int y = NBTUtils.getChildTag(compoundsection.getValue(), "Y", ByteTag.class).getValue();
if(y < 0 || y >= 16) continue;
blocks[y] = NBTUtils.getChildTag(compoundsection.getValue(), "Blocks", ByteArrayTag.class).getValue();
data[y] = NBTUtils.getChildTag(compoundsection.getValue(), "Data", ByteArrayTag.class).getValue();
}
int sectionsize = 16*16*16;
for(int i = 0; i < blocks.length; i++) {
if (blocks[i].length != sectionsize) {
throw new InvalidFormatException("Chunk blocks byte array expected "
+ "to be " + sectionsize + " bytes; found " + blocks[i].length);
for (Tag rawSectionTag : sections) {
if (!(rawSectionTag instanceof CompoundTag)) {
continue;
}
CompoundTag sectionTag = (CompoundTag) rawSectionTag;
if (!sectionTag.getValue().containsKey("Y")) {
continue; // Empty section.
}
int y = NBTUtils.getChildTag(sectionTag.getValue(), "Y", ByteTag.class).getValue();
if (y < 0 || y >= 16) {
continue;
}
blocks[y] = NBTUtils.getChildTag(sectionTag.getValue(),
"Blocks", ByteArrayTag.class).getValue();
data[y] = NBTUtils.getChildTag(sectionTag.getValue(), "Data",
ByteArrayTag.class).getValue();
// 4096 ID block support
if (sectionTag.getValue().containsKey("Add")) {
blocksAdd[y] = NBTUtils.getChildTag(sectionTag.getValue(),
"Add", ByteArrayTag.class).getValue();
}
}
for(int i = 0; i < data.length; i++) {
if (data[i].length != (sectionsize/2)) {
int sectionsize = 16 * 16 * 16;
for (int i = 0; i < blocks.length; i++) {
if (blocks[i].length != sectionsize) {
throw new InvalidFormatException(
"Chunk blocks byte array expected " + "to be "
+ sectionsize + " bytes; found "
+ blocks[i].length);
}
}
for (int i = 0; i < data.length; i++) {
if (data[i].length != (sectionsize / 2)) {
throw new InvalidFormatException("Chunk block data byte array "
+ "expected to be " + sectionsize + " bytes; found " + data[i].length);
+ "expected to be " + sectionsize + " bytes; found "
+ data[i].length);
}
}
}
@ -78,14 +103,28 @@ public class AnvilChunk implements Chunk {
int z = pos.getBlockZ() - rootZ * 16;
int section = y >> 4;
if(section < 0 || section >= blocks.length) throw new DataException("Chunk does not contain position " + pos);
int yindex = y & 0x0F;
if(yindex < 0 || yindex >= 16) throw new DataException("Chunk does not contain position " + pos);
if (section < 0 || section >= blocks.length) {
throw new DataException("Chunk does not contain position " + pos);
}
int yindex = y & 0x0F;
if (yindex < 0 || yindex >= 16) {
throw new DataException("Chunk does not contain position " + pos);
}
int index = x + (z * 16 + (yindex * 16 * 16));
try {
return blocks[section][index];
int addId = 0;
// 4 bits, so we have to divide by 2 and get the right 4 bits
if (index % 2 == 0) {
addId = (blocksAdd[section][index >> 2] >> 4) << 8;
} else {
addId = (blocksAdd[section][index >> 2] & 0xF) << 8;
}
return blocks[section][index] + addId;
} catch (IndexOutOfBoundsException e) {
throw new DataException("Chunk does not contain position " + pos);
}
@ -98,12 +137,17 @@ public class AnvilChunk implements Chunk {
int z = pos.getBlockZ() - rootZ * 16;
int section = y >> 4;
if(section < 0 || section >= blocks.length) throw new DataException("Chunk does not contain position " + pos);
int yindex = y & 0x0F;
if(yindex < 0 || yindex >= 16) throw new DataException("Chunk does not contain position " + pos);
int yIndex = y & 0x0F;
if (section < 0 || section >= blocks.length) {
throw new DataException("Chunk does not contain position " + pos);
}
int index = x + (z * 16 + (yindex * 16 * 16));
if (yIndex < 0 || yIndex >= 16) {
throw new DataException("Chunk does not contain position " + pos);
}
int index = x + (z * 16 + (yIndex * 16 * 16));
boolean shift = index % 2 == 0;
index /= 2;
@ -124,15 +168,15 @@ public class AnvilChunk implements Chunk {
* @throws DataException
*/
private void populateTileEntities() throws DataException {
List<Tag> tags = NBTUtils.getChildTag(
rootTag.getValue(), "TileEntities", ListTag.class)
.getValue();
List<Tag> tags = NBTUtils.getChildTag(rootTag.getValue(),
"TileEntities", ListTag.class).getValue();
tileEntities = new HashMap<BlockVector, Map<String, Tag>>();
for (Tag tag : tags) {
if (!(tag instanceof CompoundTag)) {
throw new InvalidFormatException("CompoundTag expected in TileEntities");
throw new InvalidFormatException(
"CompoundTag expected in TileEntities");
}
CompoundTag t = (CompoundTag) tag;