src/main/java/mekanism/common/block/BlockCardboardBox.java

package mekanism.common.block;

import java.util.Random;

import mekanism.common.Mekanism;
import mekanism.common.MekanismBlocks;
import mekanism.common.item.ItemBlockCardboardBox;
import mekanism.common.tile.TileEntityCardboardBox;
import net.minecraft.block.Block;
import net.minecraft.block.BlockContainer;
import net.minecraft.block.material.Material;
import net.minecraft.client.renderer.texture.IIconRegister;
import net.minecraft.entity.item.EntityItem;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.item.Item;
import net.minecraft.item.ItemStack;
import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.tileentity.TileEntity;
import net.minecraft.util.IIcon;
import net.minecraft.util.MovingObjectPosition;
import net.minecraft.world.IBlockAccess;
import net.minecraft.world.World;
import cpw.mods.fml.relauncher.Side;
import cpw.mods.fml.relauncher.SideOnly;

public class BlockCardboardBox extends BlockContainer
{
	private static boolean testingPlace = false;
	
	public IIcon[] icons = new IIcon[6];

	public BlockCardboardBox()
	{
		super(Material.cloth);
		setCreativeTab(Mekanism.tabMekanism);
		setHardness(0.5F);
		setResistance(1F);
	}

	@Override
	@SideOnly(Side.CLIENT)
	public void registerBlockIcons(IIconRegister register)
	{
		icons[0] = register.registerIcon("mekanism:CardboardBoxTop");
		icons[1] = register.registerIcon("mekanism:CardboardBoxSide");
		icons[2] = register.registerIcon("mekanism:CardboardBoxSideStorage");
	}

	@Override
	@SideOnly(Side.CLIENT)
	public IIcon getIcon(int side, int meta)
	{
		if(side == 0 || side == 1)
		{
			return icons[0];
		}
		else {
			return meta == 0 ? icons[1] : icons[2];
		}
	}
	
	@Override
	public boolean isReplaceable(IBlockAccess world, int x, int y, int z)
	{
		return testingPlace;
	}

	@Override
	public boolean onBlockActivated(World world, int x, int y, int z, EntityPlayer entityplayer, int facing, float hitX, float hitY, float hitZ)
	{
		if(!world.isRemote && entityplayer.isSneaking())
		{
			ItemStack itemStack = new ItemStack(MekanismBlocks.CardboardBox);
			TileEntityCardboardBox tileEntity = (TileEntityCardboardBox)world.getTileEntity(x, y, z);

			if(tileEntity.storedData != null)
			{
				BlockData data = tileEntity.storedData;
				
				testingPlace = true;
				
				if(!data.block.canPlaceBlockAt(world, x, y, z))
				{
					testingPlace = false;
					return true;
				}
				
				testingPlace = false;

				if(data.block != null)
				{
					data.meta = data.block.onBlockPlaced(world, x, y, z, facing, hitX, hitY, hitZ, data.meta);
				}

				world.setBlock(x, y, z, data.block, data.meta, 3);

				if(data.tileTag != null && world.getTileEntity(x, y, z) != null)
				{
					data.updateLocation(x, y, z);
					world.getTileEntity(x, y, z).readFromNBT(data.tileTag);
				}

				if(data.block != null)
				{
					data.block.onBlockPlacedBy(world, x, y, z, entityplayer, new ItemStack(data.block, 1, data.meta));
					data.block.onPostBlockPlaced(world, x, y, z, data.meta);
				}

				float motion = 0.7F;
				double motionX = (world.rand.nextFloat() * motion) + (1.0F - motion) * 0.5D;
				double motionY = (world.rand.nextFloat() * motion) + (1.0F - motion) * 0.5D;
				double motionZ = (world.rand.nextFloat() * motion) + (1.0F - motion) * 0.5D;

				EntityItem entityItem = new EntityItem(world, x + motionX, y + motionY, z + motionZ, itemStack);

				world.spawnEntityInWorld(entityItem);
			}
		}

		return false;
	}

	@Override
	public TileEntity createNewTileEntity(World world, int meta)
	{
		return new TileEntityCardboardBox();
	}

	public ItemStack dismantleBlock(World world, int x, int y, int z, boolean returnBlock)
	{
		ItemStack itemStack = getPickBlock(null, world, x, y, z, null);

		world.setBlockToAir(x, y, z);

		if(!returnBlock)
		{
			float motion = 0.7F;
			double motionX = (world.rand.nextFloat() * motion) + (1.0F - motion) * 0.5D;
			double motionY = (world.rand.nextFloat() * motion) + (1.0F - motion) * 0.5D;
			double motionZ = (world.rand.nextFloat() * motion) + (1.0F - motion) * 0.5D;

			EntityItem entityItem = new EntityItem(world, x + motionX, y + motionY, z + motionZ, itemStack);

			world.spawnEntityInWorld(entityItem);
		}

		return itemStack;
	}

	@Override
    public ItemStack getPickBlock(MovingObjectPosition target, World world, int x, int y, int z, EntityPlayer player)
	{
		TileEntityCardboardBox tileEntity = (TileEntityCardboardBox)world.getTileEntity(x, y, z);

		ItemStack itemStack = new ItemStack(MekanismBlocks.CardboardBox, 1, world.getBlockMetadata(x, y, z));

		if(itemStack.getItemDamage() == 1)
		{
			if(tileEntity.storedData != null)
			{
				((ItemBlockCardboardBox)itemStack.getItem()).setBlockData(itemStack, tileEntity.storedData);
			}
		}

		return itemStack;
	}

	@Override
	public boolean removedByPlayer(World world, EntityPlayer player, int x, int y, int z, boolean willHarvest)
	{
		if(!player.capabilities.isCreativeMode && !world.isRemote && willHarvest)
		{
			float motion = 0.7F;
			double motionX = (world.rand.nextFloat() * motion) + (1.0F - motion) * 0.5D;
			double motionY = (world.rand.nextFloat() * motion) + (1.0F - motion) * 0.5D;
			double motionZ = (world.rand.nextFloat() * motion) + (1.0F - motion) * 0.5D;

			EntityItem entityItem = new EntityItem(world, x + motionX, y + motionY, z + motionZ, getPickBlock(null, world, x, y, z, player));

			world.spawnEntityInWorld(entityItem);
		}

		return world.setBlockToAir(x, y, z);
	}

	@Override
	public int quantityDropped(Random random)
	{
		return 0;
	}

	@Override
	public Item getItemDropped(int i, Random random, int j)
	{
		return null;
	}

	public static class BlockData
	{
		public Block block;
		public int meta;
		public NBTTagCompound tileTag;

		public BlockData(Block b, int j, NBTTagCompound nbtTags)
		{
			block = b;
			meta = j;
			tileTag = nbtTags;
		}

		public BlockData() {}

		public void updateLocation(int x, int y, int z)
		{
			if(tileTag != null)
			{
				tileTag.setInteger("x", x);
				tileTag.setInteger("y", y);
				tileTag.setInteger("z", z);
			}
		}

		public NBTTagCompound write(NBTTagCompound nbtTags)
		{
			nbtTags.setInteger("id", Block.getIdFromBlock(block));
			nbtTags.setInteger("meta", meta);

			if(tileTag != null)
			{
				nbtTags.setTag("tileTag", tileTag);
			}

			return nbtTags;
		}

		public static BlockData read(NBTTagCompound nbtTags)
		{
			BlockData data = new BlockData();

			data.block = Block.getBlockById(nbtTags.getInteger("id"));
			data.meta = nbtTags.getInteger("meta");

			if(nbtTags.hasKey("tileTag"))
			{
				data.tileTag = nbtTags.getCompoundTag("tileTag");
			}

			return data;
		}
	}
}