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NBTBlobConverter.java
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NBTBlobConverter.java
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package mod.chiselsandbits.chiseledblock;
import java.io.IOException;
import mod.chiselsandbits.chiseledblock.data.VoxelBlob;
import mod.chiselsandbits.chiseledblock.data.VoxelBlob.BlobStats;
import mod.chiselsandbits.chiseledblock.data.VoxelBlobStateReference;
import mod.chiselsandbits.chiseledblock.serialization.StringStates;
import mod.chiselsandbits.core.ChiselsAndBits;
import mod.chiselsandbits.helpers.ModUtil;
import net.minecraft.block.Block;
import net.minecraft.block.state.IBlockState;
import net.minecraft.init.Blocks;
import net.minecraft.item.ItemStack;
import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.nbt.NBTTagString;
public class NBTBlobConverter
{
public static final String NBT_SIDE_FLAGS = "s";
public static final String NBT_NORMALCUBE_FLAG = "nc";
public static final String NBT_LIGHTVALUE = "lv";
public static final String NBT_PRIMARY_STATE = "b";
public static final String NBT_LEGACY_VOXEL = "v";
public static final String NBT_VERSIONED_VOXEL = "X";
TileEntityBlockChiseled tile;
private int sideState;
private int lightValue;
private boolean isNormalCube;
private int primaryBlockState;
private VoxelBlobStateReference voxelBlobRef;
private int format = -1;
private final boolean triggerUpdates;
public int getSideState()
{
return sideState;
}
public int getLightValue()
{
return lightValue;
}
public boolean isNormalCube()
{
return isNormalCube;
}
public int getPrimaryBlockStateID()
{
return primaryBlockState;
}
public IBlockState getPrimaryBlockState()
{
return ModUtil.getStateById( primaryBlockState );
}
public VoxelBlobStateReference getVoxelRef(
final int version,
final long weight ) throws Exception
{
final VoxelBlobStateReference voxelRef = getRef();
if ( format == version )
{
return new VoxelBlobStateReference( voxelRef.getByteArray(), weight );
}
return new VoxelBlobStateReference( voxelRef.getVoxelBlobCatchable().blobToBytes( version ), weight );
}
public NBTBlobConverter()
{
triggerUpdates = false;
}
public NBTBlobConverter(
final boolean triggerBlockUpdates,
final TileEntityBlockChiseled tile )
{
this.tile = tile;
triggerUpdates = triggerBlockUpdates;
sideState = tile.sideState;
lightValue = tile.getLightValue();
isNormalCube = tile.isNormalCube;
primaryBlockState = ModUtil.getStateId( tile.getBlockState( Blocks.COBBLESTONE ) );
voxelBlobRef = tile.getBlobStateReference();
format = voxelBlobRef == null ? -1 : voxelBlobRef.getFormat();
}
public void fillWith(
final IBlockState state )
{
voxelBlobRef = new VoxelBlobStateReference( ModUtil.getStateId( state ), 0 );
updateFromBlob();
}
public void setBlob(
final VoxelBlob vb )
{
voxelBlobRef = new VoxelBlobStateReference( vb, 0 );
format = voxelBlobRef.getFormat();
updateFromBlob();
}
public final void writeChisleData(
final NBTTagCompound compound,
final boolean crossWorld )
{
final VoxelBlobStateReference voxelRef = getRef();
if ( primaryBlockState == 0 )
{
return;
}
final int newFormat = crossWorld ? VoxelBlob.VERSION_CROSSWORLD : VoxelBlob.VERSION_COMPACT;
final byte[] voxelBytes = newFormat == format ? voxelRef.getByteArray() : voxelRef.getVoxelBlob().blobToBytes( newFormat );
compound.setInteger( NBT_LIGHTVALUE, lightValue );
if ( crossWorld )
{
compound.setString( NBT_PRIMARY_STATE, StringStates.getNameFromStateID( primaryBlockState ) );
}
else
{
compound.setInteger( NBT_PRIMARY_STATE, primaryBlockState );
}
compound.setInteger( NBT_SIDE_FLAGS, sideState );
compound.setBoolean( NBT_NORMALCUBE_FLAG, isNormalCube );
compound.setByteArray( NBT_VERSIONED_VOXEL, voxelBytes );
}
public final boolean readChisleData(
final NBTTagCompound compound,
final int preferedFormat )
{
if ( compound == null )
{
voxelBlobRef = new VoxelBlobStateReference( 0, 0 );
format = voxelBlobRef.getFormat();
if ( tile != null )
{
return tile.updateBlob( this, triggerUpdates );
}
return false;
}
sideState = compound.getInteger( NBT_SIDE_FLAGS );
if ( compound.getTag( NBT_PRIMARY_STATE ) instanceof NBTTagString )
{
primaryBlockState = StringStates.getStateIDFromName( compound.getString( NBT_PRIMARY_STATE ) );
}
{
primaryBlockState = compound.getInteger( NBT_PRIMARY_STATE );
}
lightValue = compound.getInteger( NBT_LIGHTVALUE );
isNormalCube = compound.getBoolean( NBT_NORMALCUBE_FLAG );
byte[] v = compound.getByteArray( NBT_VERSIONED_VOXEL );
if ( v == null || v.length == 0 )
{
final byte[] vx = compound.getByteArray( NBT_LEGACY_VOXEL );
if ( v != null && vx.length > 0 )
{
final VoxelBlob bx = new VoxelBlob();
try
{
bx.fromLegacyByteArray( vx );
}
catch ( final IOException e )
{
}
v = bx.blobToBytes( VoxelBlob.VERSION_COMPACT );
format = VoxelBlob.VERSION_COMPACT;
}
}
if ( primaryBlockState == 0 )
{
// if load fails default to cobble stone...
primaryBlockState = ModUtil.getStateId( Blocks.COBBLESTONE.getDefaultState() );
}
voxelBlobRef = new VoxelBlobStateReference( v, 0 );
format = voxelBlobRef.getFormat();
boolean formatChanged = false;
if ( preferedFormat != format && preferedFormat != VoxelBlob.VERSION_ANY )
{
formatChanged = true;
v = voxelBlobRef.getVoxelBlob().blobToBytes( preferedFormat );
voxelBlobRef = new VoxelBlobStateReference( v, 0 );
format = voxelBlobRef.getFormat();
}
if ( tile != null )
{
if ( formatChanged )
{
// this only works on already loaded tiles, so i'm not sure
// there is much point in it.
tile.markDirty();
}
return tile.updateBlob( this, triggerUpdates );
}
return true;
}
public void updateFromBlob()
{
final VoxelBlob vb = getRef().getVoxelBlob();
final BlobStats common = vb.getVoxelStats();
final float floatLight = common.blockLight;
isNormalCube = common.isNormalBlock;
lightValue = Math.max( 0, Math.min( 15, (int) ( floatLight * 15 ) ) );
sideState = vb.getSideFlags( 5, 11, 4 * 4 );
primaryBlockState = common.mostCommonState;
}
public ItemStack getItemStack(
final boolean crossWorld )
{
final Block blk = ChiselsAndBits.getBlocks().getConversion( getPrimaryBlockState() );
if ( blk != null )
{
final ItemStack is = new ItemStack( blk );
final NBTTagCompound compound = is.getSubCompound( ModUtil.NBT_BLOCKENTITYTAG, true );
writeChisleData( compound, crossWorld );
if ( !compound.hasNoTags() )
{
return is;
}
}
return null;
}
private VoxelBlobStateReference getRef()
{
if ( voxelBlobRef == null )
{
voxelBlobRef = new VoxelBlobStateReference( 0, 0 );
}
return voxelBlobRef;
}
public VoxelBlob getBlob()
{
return getRef().getVoxelBlob();
}
}