    001package net.minecraft.world.chunk.storage;
    002
    003import net.minecraft.nbt.NBTTagCompound;
    004import net.minecraft.nbt.NBTTagList;
    005import net.minecraft.world.biome.WorldChunkManager;
    006import net.minecraft.world.chunk.NibbleArray;
    007
    008public class ChunkLoader
    009{
    010    public static AnvilConverterData load(NBTTagCompound par0NBTTagCompound)
    011    {
    012        int var1 = par0NBTTagCompound.getInteger("xPos");
    013        int var2 = par0NBTTagCompound.getInteger("zPos");
    014        AnvilConverterData var3 = new AnvilConverterData(var1, var2);
    015        var3.blocks = par0NBTTagCompound.getByteArray("Blocks");
    016        var3.data = new NibbleArrayReader(par0NBTTagCompound.getByteArray("Data"), 7);
    017        var3.skyLight = new NibbleArrayReader(par0NBTTagCompound.getByteArray("SkyLight"), 7);
    018        var3.blockLight = new NibbleArrayReader(par0NBTTagCompound.getByteArray("BlockLight"), 7);
    019        var3.heightmap = par0NBTTagCompound.getByteArray("HeightMap");
    020        var3.terrainPopulated = par0NBTTagCompound.getBoolean("TerrainPopulated");
    021        var3.entities = par0NBTTagCompound.getTagList("Entities");
    022        var3.tileEntities = par0NBTTagCompound.getTagList("TileEntities");
    023        var3.tileTicks = par0NBTTagCompound.getTagList("TileTicks");
    024
    025        try
    026        {
    027            var3.lastUpdated = par0NBTTagCompound.getLong("LastUpdate");
    028        }
    029        catch (ClassCastException var5)
    030        {
    031            var3.lastUpdated = (long)par0NBTTagCompound.getInteger("LastUpdate");
    032        }
    033
    034        return var3;
    035    }
    036
    037    public static void convertToAnvilFormat(AnvilConverterData par0AnvilConverterData, NBTTagCompound par1NBTTagCompound, WorldChunkManager par2WorldChunkManager)
    038    {
    039        par1NBTTagCompound.setInteger("xPos", par0AnvilConverterData.x);
    040        par1NBTTagCompound.setInteger("zPos", par0AnvilConverterData.z);
    041        par1NBTTagCompound.setLong("LastUpdate", par0AnvilConverterData.lastUpdated);
    042        int[] var3 = new int[par0AnvilConverterData.heightmap.length];
    043
    044        for (int var4 = 0; var4 < par0AnvilConverterData.heightmap.length; ++var4)
    045        {
    046            var3[var4] = par0AnvilConverterData.heightmap[var4];
    047        }
    048
    049        par1NBTTagCompound.setIntArray("HeightMap", var3);
    050        par1NBTTagCompound.setBoolean("TerrainPopulated", par0AnvilConverterData.terrainPopulated);
    051        NBTTagList var16 = new NBTTagList("Sections");
    052        int var7;
    053
    054        for (int var5 = 0; var5 < 8; ++var5)
    055        {
    056            boolean var6 = true;
    057
    058            for (var7 = 0; var7 < 16 && var6; ++var7)
    059            {
    060                int var8 = 0;
    061
    062                while (var8 < 16 && var6)
    063                {
    064                    int var9 = 0;
    065
    066                    while (true)
    067                    {
    068                        if (var9 < 16)
    069                        {
    070                            int var10 = var7 << 11 | var9 << 7 | var8 + (var5 << 4);
    071                            byte var11 = par0AnvilConverterData.blocks[var10];
    072
    073                            if (var11 == 0)
    074                            {
    075                                ++var9;
    076                                continue;
    077                            }
    078
    079                            var6 = false;
    080                        }
    081
    082                        ++var8;
    083                        break;
    084                    }
    085                }
    086            }
    087
    088            if (!var6)
    089            {
    090                byte[] var19 = new byte[4096];
    091                NibbleArray var20 = new NibbleArray(var19.length, 4);
    092                NibbleArray var21 = new NibbleArray(var19.length, 4);
    093                NibbleArray var23 = new NibbleArray(var19.length, 4);
    094
    095                for (int var22 = 0; var22 < 16; ++var22)
    096                {
    097                    for (int var12 = 0; var12 < 16; ++var12)
    098                    {
    099                        for (int var13 = 0; var13 < 16; ++var13)
    100                        {
    101                            int var14 = var22 << 11 | var13 << 7 | var12 + (var5 << 4);
    102                            byte var15 = par0AnvilConverterData.blocks[var14];
    103                            var19[var12 << 8 | var13 << 4 | var22] = (byte)(var15 & 255);
    104                            var20.set(var22, var12, var13, par0AnvilConverterData.data.get(var22, var12 + (var5 << 4), var13));
    105                            var21.set(var22, var12, var13, par0AnvilConverterData.skyLight.get(var22, var12 + (var5 << 4), var13));
    106                            var23.set(var22, var12, var13, par0AnvilConverterData.blockLight.get(var22, var12 + (var5 << 4), var13));
    107                        }
    108                    }
    109                }
    110
    111                NBTTagCompound var24 = new NBTTagCompound();
    112                var24.setByte("Y", (byte)(var5 & 255));
    113                var24.setByteArray("Blocks", var19);
    114                var24.setByteArray("Data", var20.data);
    115                var24.setByteArray("SkyLight", var21.data);
    116                var24.setByteArray("BlockLight", var23.data);
    117                var16.appendTag(var24);
    118            }
    119        }
    120
    121        par1NBTTagCompound.setTag("Sections", var16);
    122        byte[] var17 = new byte[256];
    123
    124        for (int var18 = 0; var18 < 16; ++var18)
    125        {
    126            for (var7 = 0; var7 < 16; ++var7)
    127            {
    128                var17[var7 << 4 | var18] = (byte)(par2WorldChunkManager.getBiomeGenAt(par0AnvilConverterData.x << 4 | var18, par0AnvilConverterData.z << 4 | var7).biomeID & 255);
    129            }
    130        }
    131
    132        par1NBTTagCompound.setByteArray("Biomes", var17);
    133        par1NBTTagCompound.setTag("Entities", par0AnvilConverterData.entities);
    134        par1NBTTagCompound.setTag("TileEntities", par0AnvilConverterData.tileEntities);
    135
    136        if (par0AnvilConverterData.tileTicks != null)
    137        {
    138            par1NBTTagCompound.setTag("TileTicks", par0AnvilConverterData.tileTicks);
    139        }
    140    }
    141}