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dynmap/bukkit-helper-118/src/main/java/org/dynmap/bukkit/helper/v118/MapChunkCache118.java

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package org.dynmap.bukkit.helper.v118;
import org.bukkit.ChunkSnapshot;
import org.bukkit.World;
import org.bukkit.block.Biome;
import org.bukkit.craftbukkit.v1_18_R1.CraftWorld;
import org.dynmap.DynmapChunk;
import org.dynmap.DynmapCore;
import org.dynmap.bukkit.helper.AbstractMapChunkCache;
import org.dynmap.bukkit.helper.BukkitVersionHelper;
import org.dynmap.bukkit.helper.SnapshotCache;
import org.dynmap.bukkit.helper.SnapshotCache.SnapshotRec;
import org.dynmap.common.BiomeMap;
import org.dynmap.renderer.DynmapBlockState;
import org.dynmap.utils.DataBitsPacked;
import org.dynmap.utils.DynIntHashMap;
import org.dynmap.utils.VisibilityLimit;
import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.nbt.NBTTagList;
import net.minecraft.util.DataBits;
import net.minecraft.util.SimpleBitStorage;
import net.minecraft.world.level.ChunkCoordIntPair;
import net.minecraft.world.level.chunk.ChunkStatus;
import net.minecraft.world.level.chunk.storage.ChunkRegionLoader;
import net.minecraft.world.level.chunk.Chunk;
import java.io.IOException;
import java.util.Arrays;
import java.util.LinkedList;
/**
* Container for managing chunks - dependent upon using chunk snapshots, since rendering is off server thread
*/
public class MapChunkCache118 extends AbstractMapChunkCache {
public static class NBTSnapshot implements Snapshot {
private static interface Section {
public DynmapBlockState getBlockType(int x, int y, int z);
public int getBlockSkyLight(int x, int y, int z);
public int getBlockEmittedLight(int x, int y, int z);
public boolean isEmpty();
public int getBiome(int x, int y, int z);
}
private final int x, z;
private final Section[] section;
private final int sectionOffset;
private final int[] hmap; // Height map
private final int[] biome;
private final Object[] biomebase;
private final long captureFulltime;
private final int sectionCnt;
private final long inhabitedTicks;
private static final int BLOCKS_PER_SECTION = 16 * 16 * 16;
private static final int BIOMES_PER_SECTION = 4 * 4 * 4;
private static final int COLUMNS_PER_CHUNK = 16 * 16;
private static final byte[] emptyData = new byte[BLOCKS_PER_SECTION / 2];
private static final byte[] fullData = new byte[BLOCKS_PER_SECTION / 2];
static
{
Arrays.fill(fullData, (byte)0xFF);
}
private static byte[] dataCopy(byte[] v) {
if (Arrays.equals(v, emptyData))
return emptyData;
else if (Arrays.equals(v, fullData))
return fullData;
else
return v.clone();
}
private static class EmptySection implements Section {
@Override
public DynmapBlockState getBlockType(int x, int y, int z) {
return DynmapBlockState.AIR;
}
@Override
public int getBlockSkyLight(int x, int y, int z) {
return 15;
}
@Override
public int getBlockEmittedLight(int x, int y, int z) {
return 0;
}
@Override
public boolean isEmpty() {
return true;
}
@Override
public int getBiome(int x, int y, int z) {
return BiomeMap.PLAINS.getBiomeID();
}
}
private static final EmptySection empty_section = new EmptySection();
private static class StdSection implements Section {
DynmapBlockState[] states;
byte[] skylight;
byte[] emitlight;
int[] biomes;
public StdSection() {
states = new DynmapBlockState[BLOCKS_PER_SECTION];
Arrays.fill(states, DynmapBlockState.AIR);
biomes = new int[BIOMES_PER_SECTION];
skylight = emptyData;
emitlight = emptyData;
}
@Override
public DynmapBlockState getBlockType(int x, int y, int z) {
return states[((y & 0xF) << 8) | (z << 4) | x];
}
@Override
public int getBlockSkyLight(int x, int y, int z) {
int off = ((y & 0xF) << 7) | (z << 3) | (x >> 1);
return (skylight[off] >> (4 * (x & 1))) & 0xF;
}
@Override
public int getBlockEmittedLight(int x, int y, int z)
{
int off = ((y & 0xF) << 7) | (z << 3) | (x >> 1);
return (emitlight[off] >> (4 * (x & 1))) & 0xF;
}
@Override
public boolean isEmpty() {
return false;
}
@Override
public int getBiome(int x, int y, int z) {
int off = (((y & 0xF) >> 2) << 4) | ((z >> 2) << 2) | (x >> 2);
return biomes[off];
}
}
/**
* Construct empty chunk snapshot
*
* @param x
* @param z
*/
public NBTSnapshot(int worldheight, int x, int z, long captime, long inhabitedTime)
{
this.x = x;
this.z = z;
this.captureFulltime = captime;
this.biome = new int[COLUMNS_PER_CHUNK];
this.biomebase = new Object[COLUMNS_PER_CHUNK];
this.sectionCnt = worldheight / 16;
/* Allocate arrays indexed by section */
this.section = new Section[this.sectionCnt+1];
this.sectionOffset = 0;
/* Fill with empty data */
for (int i = 0; i <= this.sectionCnt; i++) {
this.section[i] = empty_section;
}
/* Create empty height map */
this.hmap = new int[16 * 16];
this.inhabitedTicks = inhabitedTime;
}
public NBTSnapshot(NBTTagCompound nbt, int worldheight) {
this.x = nbt.h("xPos");
this.z = nbt.h("zPos");
this.captureFulltime = 0;
this.hmap = nbt.n("HeightMap");
this.sectionCnt = worldheight / 16;
if (nbt.e("InhabitedTime")) {
this.inhabitedTicks = nbt.i("InhabitedTime");
}
else {
this.inhabitedTicks = 0;
}
/* Allocate arrays indexed by section */
LinkedList<Section> sections = new LinkedList<Section>();
int sectoff = 0; // Default to zero
int sectcnt = 0;
/* Fill with empty data */
for (int i = 0; i <= this.sectionCnt; i++) {
sections.add(empty_section);
sectcnt++;
}
//System.out.println("nbt.keys()=" + nbt.d().toString());
StdSection lastsectwithbiome = null;
/* Get sections */
NBTTagList sect = nbt.e("sections") ? nbt.c("sections", 10) : nbt.c("Sections", 10);
for (int i = 0; i < sect.size(); i++) {
NBTTagCompound sec = sect.a(i);
int secnum = sec.h("Y");
// Beyond end - extend up
while (secnum >= (sectcnt - sectoff)) {
sections.addLast(empty_section); // Pad with empty
sectcnt++;
}
// Negative - see if we need to extend sectionOffset
while ((secnum + sectoff) < 0) {
sections.addFirst(empty_section); // Pad with empty
sectoff++;
sectcnt++;
}
//System.out.println("section(" + secnum + ")=" + sec.toString());
// Create normal section to initialize
StdSection cursect = new StdSection();
sections.set(secnum + sectoff, cursect);
DynmapBlockState[] states = cursect.states;
DynmapBlockState[] palette = null;
// If we've got palette and block states list, process non-empty section
if (sec.b("Palette", 9) && sec.b("BlockStates", 12)) {
NBTTagList plist = sec.c("Palette", 10);
long[] statelist = sec.o("BlockStates");
palette = new DynmapBlockState[plist.size()];
for (int pi = 0; pi < plist.size(); pi++) {
NBTTagCompound tc = plist.a(pi);
String pname = tc.l("Name");
if (tc.e("Properties")) {
StringBuilder statestr = new StringBuilder();
NBTTagCompound prop = tc.p("Properties");
for (String pid : prop.d()) {
if (statestr.length() > 0) statestr.append(',');
statestr.append(pid).append('=').append(prop.c(pid).e_());
}
palette[pi] = DynmapBlockState.getStateByNameAndState(pname, statestr.toString());
}
if (palette[pi] == null) {
palette[pi] = DynmapBlockState.getBaseStateByName(pname);
}
if (palette[pi] == null) {
palette[pi] = DynmapBlockState.AIR;
}
}
int recsperblock = (4096 + statelist.length - 1) / statelist.length;
int bitsperblock = 64 / recsperblock;
DataBits db = null;
DataBitsPacked dbp = null;
try {
db = new SimpleBitStorage(bitsperblock, 4096, statelist);
} catch (Exception x) { // Handle legacy encoded
bitsperblock = (statelist.length * 64) / 4096;
dbp = new DataBitsPacked(bitsperblock, 4096, statelist);
}
if (bitsperblock > 8) { // Not palette
for (int j = 0; j < 4096; j++) {
int v = (dbp != null) ? dbp.getAt(j) : db.a(j);
states[j] = DynmapBlockState.getStateByGlobalIndex(v);
}
}
else {
for (int j = 0; j < 4096; j++) {
int v = (dbp != null) ? dbp.getAt(j) : db.a(j);
states[j] = (v < palette.length) ? palette[v] : DynmapBlockState.AIR;
}
}
}
else if (sec.e("block_states")) { // 1.18
NBTTagCompound block_states = sec.p("block_states");
// If we've block state data, process non-empty section
if (block_states.b("data", 12)) {
long[] statelist = block_states.o("data");
NBTTagList plist = block_states.c("palette", 10);
palette = new DynmapBlockState[plist.size()];
for (int pi = 0; pi < plist.size(); pi++) {
NBTTagCompound tc = plist.a(pi);
String pname = tc.l("Name");
if (tc.e("Properties")) {
StringBuilder statestr = new StringBuilder();
NBTTagCompound prop = tc.p("Properties");
for (String pid : prop.d()) {
if (statestr.length() > 0) statestr.append(',');
statestr.append(pid).append('=').append(prop.c(pid).e_());
}
palette[pi] = DynmapBlockState.getStateByNameAndState(pname, statestr.toString());
}
if (palette[pi] == null) {
palette[pi] = DynmapBlockState.getBaseStateByName(pname);
}
if (palette[pi] == null) {
palette[pi] = DynmapBlockState.AIR;
}
}
SimpleBitStorage db = null;
DataBitsPacked dbp = null;
int bitsperblock = (statelist.length * 64) / 4096;
int expectedStatelistLength = (4096 + (64 / bitsperblock) - 1) / (64 / bitsperblock);
if (statelist.length == expectedStatelistLength) {
db = new SimpleBitStorage(bitsperblock, 4096, statelist);
}
else {
bitsperblock = (statelist.length * 64) / 4096;
dbp = new DataBitsPacked(bitsperblock, 4096, statelist);
}
if (bitsperblock > 8) { // Not palette
for (int j = 0; j < 4096; j++) {
int v = db != null ? db.a(j) : dbp.getAt(j);
states[j] = DynmapBlockState.getStateByGlobalIndex(v);
}
}
else {
for (int j = 0; j < 4096; j++) {
int v = db != null ? db.a(j) : dbp.getAt(j);
states[j] = (v < palette.length) ? palette[v] : DynmapBlockState.AIR;
}
}
}
}
if (sec.e("BlockLight")) {
cursect.emitlight = dataCopy(sec.m("BlockLight"));
}
if (sec.e("SkyLight")) {
cursect.skylight = dataCopy(sec.m("SkyLight"));
}
// If section biome palette
if (sec.e("biomes")) {
NBTTagCompound nbtbiomes = sec.p("biomes");
long[] bdataPacked = nbtbiomes.o("data");
NBTTagList bpalette = nbtbiomes.c("palette", 8);
SimpleBitStorage bdata = null;
if (bdataPacked.length > 0)
bdata = new SimpleBitStorage(bdataPacked.length, 64, bdataPacked);
for (int j = 0; j < 64; j++) {
int b = bdata != null ? bdata.a(j) : 0;
cursect.biomes[j] = b < bpalette.size() ? BiomeMap.byBiomeName(bpalette.j(b)).getBiomeID() : -1;
}
lastsectwithbiome = cursect;
}
}
/* Get biome data */
this.biome = new int[COLUMNS_PER_CHUNK];
this.biomebase = new Object[COLUMNS_PER_CHUNK];
Object[] bbl = BukkitVersionHelper.helper.getBiomeBaseList();
if (nbt.e("Biomes")) {
int[] bb = nbt.n("Biomes");
if (bb != null) {
// If v1.15+ format
if (bb.length > COLUMNS_PER_CHUNK) {
// For now, just pad the grid with the first 16
for (int i = 0; i < COLUMNS_PER_CHUNK; i++) {
int off = ((i >> 4) & 0xC) + ((i >> 2) & 0x3);
int bv = bb[off + 64]; // Offset to y=64
if (bv < 0) bv = 0;
this.biome[i] = bv;
this.biomebase[i] = bbl[bv];
}
}
else { // Else, older chunks
for (int i = 0; i < bb.length; i++) {
int bv = bb[i];
if (bv < 0) bv = 0;
this.biome[i] = bv;
this.biomebase[i] = bbl[bv];
}
}
}
}
else { // Make up 2D version for now
if (lastsectwithbiome != null) {
// For now, just pad the grid with the first 16
for (int i = 0; i < COLUMNS_PER_CHUNK; i++) {
int off = ((i >> 4) & 0xC) + ((i >> 2) & 0x3);
int bv = lastsectwithbiome.biomes[off]; // Offset to y=64
if (bv < 0) bv = 0;
this.biome[i] = bv;
this.biomebase[i] = bbl[bv];
}
}
}
// Finalize sections array
this.section = sections.toArray(new Section[sections.size()]);
this.sectionOffset = sectoff;
}
public int getX()
{
return x;
}
public int getZ()
{
return z;
}
public DynmapBlockState getBlockType(int x, int y, int z)
{
int idx = (y >> 4) + sectionOffset;
if ((idx < 0) || (idx >= section.length)) return DynmapBlockState.AIR;
return section[idx].getBlockType(x, y, z);
}
public int getBlockSkyLight(int x, int y, int z)
{
int idx = (y >> 4) + sectionOffset;
if ((idx < 0) || (idx >= section.length)) return 15;
return section[idx].getBlockSkyLight(x, y, z);
}
public int getBlockEmittedLight(int x, int y, int z)
{
int idx = (y >> 4) + sectionOffset;
if ((idx < 0) || (idx >= section.length)) return 0;
return section[idx].getBlockEmittedLight(x, y, z);
}
public int getHighestBlockYAt(int x, int z)
{
return hmap[z << 4 | x];
}
public final long getCaptureFullTime()
{
return captureFulltime;
}
public boolean isSectionEmpty(int sy)
{
int idx = sy + sectionOffset;
if ((idx < 0) || (idx >= section.length)) return true;
return section[idx].isEmpty();
}
public long getInhabitedTicks() {
return inhabitedTicks;
}
@Override
public Biome getBiome(int x, int z) {
return AbstractMapChunkCache.getBiomeByID(biome[z << 4 | x]);
}
@Override
public Object[] getBiomeBaseFromSnapshot() {
return this.biomebase;
}
}
private NBTTagCompound fetchLoadedChunkNBT(World w, int x, int z) {
CraftWorld cw = (CraftWorld) w;
NBTTagCompound nbt = null;
if (cw.isChunkLoaded(x, z)) {
Chunk c = cw.getHandle().getChunkIfLoaded(x, z);
if ((c != null) && c.o) { // c.loaded
nbt = ChunkRegionLoader.a(cw.getHandle(), c);
}
}
if (nbt != null) {
if (nbt.e("Level")) {
nbt = nbt.p("Level");
}
if (nbt != null) {
String stat = nbt.l("Status");
ChunkStatus cs = ChunkStatus.a(stat);
if ((stat == null) || (!cs.b(ChunkStatus.l))) { // ChunkStatus.LIGHT
nbt = null;
}
}
}
return nbt;
}
private NBTTagCompound loadChunkNBT(World w, int x, int z) {
//.info("loadChunkNBT(" + w.getName() + "," + x + "," + z);
CraftWorld cw = (CraftWorld) w;
NBTTagCompound nbt = null;
ChunkCoordIntPair cc = new ChunkCoordIntPair(x, z);
try {
nbt = cw.getHandle().k().a.f(cc); // playerChunkMap
} catch (IOException iox) {
}
if (nbt != null) {
// See if we have Level - unwrap this if so
if (nbt.e("Level")) {
nbt = nbt.p("Level");
}
if (nbt != null) {
String stat = nbt.l("Status");
if ((stat == null) || (stat.equals("full") == false)) {
nbt = null;
if ((stat == null) || stat.equals("") && DynmapCore.migrateChunks()) {
Chunk c = cw.getHandle().getChunkIfLoaded(x, z);
if (c != null) {
nbt = fetchLoadedChunkNBT(w, x, z);
cw.getHandle().a(c);
}
}
}
}
}
return nbt;
}
@Override
public Snapshot wrapChunkSnapshot(ChunkSnapshot css) {
// TODO Auto-generated method stub
return null;
}
// Load chunk snapshots
@Override
public int loadChunks(int max_to_load) {
if(dw.isLoaded() == false)
return 0;
int cnt = 0;
if(iterator == null)
iterator = chunks.listIterator();
DynmapCore.setIgnoreChunkLoads(true);
// Load the required chunks.
while((cnt < max_to_load) && iterator.hasNext()) {
long startTime = System.nanoTime();
DynmapChunk chunk = iterator.next();
boolean vis = true;
if(visible_limits != null) {
vis = false;
for(VisibilityLimit limit : visible_limits) {
if (limit.doIntersectChunk(chunk.x, chunk.z)) {
vis = true;
break;
}
}
}
if(vis && (hidden_limits != null)) {
for(VisibilityLimit limit : hidden_limits) {
if (limit.doIntersectChunk(chunk.x, chunk.z)) {
vis = false;
break;
}
}
}
/* Check if cached chunk snapshot found */
Snapshot ss = null;
long inhabited_ticks = 0;
DynIntHashMap tileData = null;
int idx = (chunk.x-x_min) + (chunk.z - z_min)*x_dim;
SnapshotRec ssr = SnapshotCache.sscache.getSnapshot(dw.getName(), chunk.x, chunk.z, blockdata, biome, biomeraw, highesty);
if(ssr != null) {
inhabited_ticks = ssr.inhabitedTicks;
if(!vis) {
if(hidestyle == HiddenChunkStyle.FILL_STONE_PLAIN)
ss = STONE;
else if(hidestyle == HiddenChunkStyle.FILL_OCEAN)
ss = OCEAN;
else
ss = EMPTY;
}
else {
ss = ssr.ss;
}
snaparray[idx] = ss;
snaptile[idx] = ssr.tileData;
inhabitedTicks[idx] = inhabited_ticks;
endChunkLoad(startTime, ChunkStats.CACHED_SNAPSHOT_HIT);
continue;
}
// Fetch NTB for chunk if loaded
NBTTagCompound nbt = fetchLoadedChunkNBT(w, chunk.x, chunk.z);
boolean did_load = false;
if (nbt == null) {
// Load NTB for chunk, if it exists
nbt = loadChunkNBT(w, chunk.x, chunk.z);
did_load = true;
}
if (nbt != null) {
NBTSnapshot nss = new NBTSnapshot(nbt, w.getMaxHeight());
ss = nss;
inhabited_ticks = nss.getInhabitedTicks();
if(!vis) {
if(hidestyle == HiddenChunkStyle.FILL_STONE_PLAIN)
ss = STONE;
else if(hidestyle == HiddenChunkStyle.FILL_OCEAN)
ss = OCEAN;
else
ss = EMPTY;
}
}
else {
ss = EMPTY;
}
ssr = new SnapshotRec();
ssr.ss = ss;
ssr.inhabitedTicks = inhabited_ticks;
ssr.tileData = tileData;
SnapshotCache.sscache.putSnapshot(dw.getName(), chunk.x, chunk.z, ssr, blockdata, biome, biomeraw, highesty);
snaparray[idx] = ss;
snaptile[idx] = ssr.tileData;
inhabitedTicks[idx] = inhabited_ticks;
if (nbt == null)
endChunkLoad(startTime, ChunkStats.UNGENERATED_CHUNKS);
else if (did_load)
endChunkLoad(startTime, ChunkStats.UNLOADED_CHUNKS);
else
endChunkLoad(startTime, ChunkStats.LOADED_CHUNKS);
cnt++;
}
DynmapCore.setIgnoreChunkLoads(false);
if(iterator.hasNext() == false) { /* If we're done */
isempty = true;
/* Fill missing chunks with empty dummy chunk */
for(int i = 0; i < snaparray.length; i++) {
if(snaparray[i] == null)
snaparray[i] = EMPTY;
else if(snaparray[i] != EMPTY)
isempty = false;
}
}
return cnt;
}
}
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