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package powercrystals.minefactoryreloaded.api;
import net.minecraft.block.Block;
import net.minecraft.item.*;
import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.tileentity.TileEntity;
import net.minecraft.world.World;
public class ReplacementBlock
{
protected byte _hasMeta;
protected int _meta;
protected final Block _block;
protected final NBTTagCompound _tileTag;
/**
* Called to replace a block in the world.
* @param world The world object
* @param x The X coord
* @param y The Y coord
* @param z The Z coord
* @param stack The ItemStack being used to replace the block (may be null)
* @return True if the block was set successfully
*/
public boolean replaceBlock(World world, int x, int y, int z, ItemStack stack)
{
int meta = getMeta(world, x, y, z, stack);
if (world.setBlock(x, y, z, _block, meta, 3))
{
if (hasTag(stack) && _block.hasTileEntity(meta))
{
TileEntity tile = world.getTileEntity(x, y, z);
if (tile != null)
tile.readFromNBT(getTag(world, x, y, z, stack));
}
return true;
}
return false;
}
/**
* Called to get the metadata of the replacement block in the world.
* @param world The world object
* @param x The X coord
* @param y The Y coord
* @param z The Z coord
* @param stack The ItemStack being used to replace the block (may be null)
* @return The metadata of the block
*/
protected int getMeta(World world, int x, int y, int z, ItemStack stack)
{
int m = 0;
if (_hasMeta > 0)
{
if (_hasMeta > 1)
return _meta;
m = stack.getItemDamage();
Item item = stack.getItem();
if (item instanceof ItemBlock)
m = ((ItemBlock)item).getMetadata(m);
}
return m;
}
/**
* Called to set the metdata of this ReplacementBlock to a fixed value
* @param meta The metadata of the block
* @return This instance
*/
public ReplacementBlock setMeta(int meta)
{
if (meta >= 0)
{
_hasMeta = 2;
_meta = meta;
}
return this;
}
/**
* Called to set the metdata of this ReplacementBlock to a value read from an ItemStack
* @param meta The metadata of the block
* @return This instance
*/
public ReplacementBlock setMeta(boolean hasMeta)
{
_hasMeta = (byte) (hasMeta ? 1 : 0);
return this;
}
/**
* Called to get the NBTTagCompound a TileEntity will read its state from
* @param world The world object
* @param x The X coord
* @param y The Y coord
* @param z The Z coord
* @param stack The ItemStack being used to replace the block (may be null)
* @return The NBTTagCompound a TileEntity will read its state from
*/
protected NBTTagCompound getTag(World world, int x, int y, int z, ItemStack stack)
{
return _tileTag;
}
/**
* Called to see if a TileEntity should have its state set
* @param stack The ItemStack being used to replace the block (may be null)
* @return True if the TileEntity should have its state set
*/
protected boolean hasTag(ItemStack stack)
{
return _tileTag != null;
}
public ReplacementBlock(Item block)
{
this(Block.getBlockFromItem(block));
}
public ReplacementBlock(Item block, NBTTagCompound tag)
{
this(Block.getBlockFromItem(block), tag);
}
public ReplacementBlock(Block block)
{
this(block, null);
}
public ReplacementBlock(Block block, NBTTagCompound tag)
{
_block = block;
_tileTag = tag;
}
}
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