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}