ItemSlab.java

package net.minecraft.item;

import cpw.mods.fml.relauncher.Side;
import cpw.mods.fml.relauncher.SideOnly;
import net.minecraft.block.Block;
import net.minecraft.block.BlockHalfSlab;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.world.World;

public class ItemSlab extends ItemBlock
{
    private final boolean isFullBlock;

    /** Instance of BlockHalfSlab. */
    private final BlockHalfSlab theHalfSlab;

    /** Instance of BlockHalfSlab. */
    private final BlockHalfSlab theHalfSlab2;

    public ItemSlab(int par1, BlockHalfSlab par2BlockHalfSlab, BlockHalfSlab par3BlockHalfSlab, boolean par4)
    {
        super(par1);
        this.theHalfSlab = par2BlockHalfSlab;
        this.theHalfSlab2 = par3BlockHalfSlab;
        this.isFullBlock = par4;
        this.setMaxDamage(0);
        this.setHasSubtypes(true);
    }

    @SideOnly(Side.CLIENT)

    /**
     * Gets an icon index based on an item's damage value
     */
    public int getIconFromDamage(int par1)
    {
        return Block.blocksList[this.itemID].getBlockTextureFromSideAndMetadata(2, par1);
    }

    /**
     * Returns the metadata of the block which this Item (ItemBlock) can place
     */
    public int getMetadata(int par1)
    {
        return par1;
    }

    public String getItemNameIS(ItemStack par1ItemStack)
    {
        return this.theHalfSlab.getFullSlabName(par1ItemStack.getItemDamage());
    }

    /**
     * Callback for item usage. If the item does something special on right clicking, he will have one of those. Return
     * True if something happen and false if it don't. This is for ITEMS, not BLOCKS
     */
    public boolean onItemUse(ItemStack par1ItemStack, EntityPlayer par2EntityPlayer, World par3World, int par4, int par5, int par6, int par7, float par8, float par9, float par10)
    {
        if (this.isFullBlock)
        {
            return super.onItemUse(par1ItemStack, par2EntityPlayer, par3World, par4, par5, par6, par7, par8, par9, par10);
        }
        else if (par1ItemStack.stackSize == 0)
        {
            return false;
        }
        else if (!par2EntityPlayer.canPlayerEdit(par4, par5, par6, par7, par1ItemStack))
        {
            return false;
        }
        else
        {
            int var11 = par3World.getBlockId(par4, par5, par6);
            int var12 = par3World.getBlockMetadata(par4, par5, par6);
            int var13 = var12 & 7;
            boolean var14 = (var12 & 8) != 0;

            if ((par7 == 1 && !var14 || par7 == 0 && var14) && var11 == this.theHalfSlab.blockID && var13 == par1ItemStack.getItemDamage())
            {
                if (par3World.checkIfAABBIsClear(this.theHalfSlab2.getCollisionBoundingBoxFromPool(par3World, par4, par5, par6)) && par3World.setBlockAndMetadataWithNotify(par4, par5, par6, this.theHalfSlab2.blockID, var13))
                {
                    par3World.playSoundEffect((double)((float)par4 + 0.5F), (double)((float)par5 + 0.5F), (double)((float)par6 + 0.5F), this.theHalfSlab2.stepSound.getPlaceSound(), (this.theHalfSlab2.stepSound.getVolume() + 1.0F) / 2.0F, this.theHalfSlab2.stepSound.getPitch() * 0.8F);
                    --par1ItemStack.stackSize;
                }

                return true;
            }
            else
            {
                return this.func_77888_a(par1ItemStack, par2EntityPlayer, par3World, par4, par5, par6, par7) ? true : super.onItemUse(par1ItemStack, par2EntityPlayer, par3World, par4, par5, par6, par7, par8, par9, par10);
            }
        }
    }

    @SideOnly(Side.CLIENT)

    /**
     * Returns true if the given ItemBlock can be placed on the given side of the given block position.
     */
    public boolean canPlaceItemBlockOnSide(World par1World, int par2, int par3, int par4, int par5, EntityPlayer par6EntityPlayer, ItemStack par7ItemStack)
    {
        int var8 = par2;
        int var9 = par3;
        int var10 = par4;
        int var11 = par1World.getBlockId(par2, par3, par4);
        int var12 = par1World.getBlockMetadata(par2, par3, par4);
        int var13 = var12 & 7;
        boolean var14 = (var12 & 8) != 0;

        if ((par5 == 1 && !var14 || par5 == 0 && var14) && var11 == this.theHalfSlab.blockID && var13 == par7ItemStack.getItemDamage())
        {
            return true;
        }
        else
        {
            if (par5 == 0)
            {
                --par3;
            }

            if (par5 == 1)
            {
                ++par3;
            }

            if (par5 == 2)
            {
                --par4;
            }

            if (par5 == 3)
            {
                ++par4;
            }

            if (par5 == 4)
            {
                --par2;
            }

            if (par5 == 5)
            {
                ++par2;
            }

            var11 = par1World.getBlockId(par2, par3, par4);
            var12 = par1World.getBlockMetadata(par2, par3, par4);
            var13 = var12 & 7;
            var14 = (var12 & 8) != 0;
            return var11 == this.theHalfSlab.blockID && var13 == par7ItemStack.getItemDamage() ? true : super.canPlaceItemBlockOnSide(par1World, var8, var9, var10, par5, par6EntityPlayer, par7ItemStack);
        }
    }

    private boolean func_77888_a(ItemStack par1ItemStack, EntityPlayer par2EntityPlayer, World par3World, int par4, int par5, int par6, int par7)
    {
        if (par7 == 0)
        {
            --par5;
        }

        if (par7 == 1)
        {
            ++par5;
        }

        if (par7 == 2)
        {
            --par6;
        }

        if (par7 == 3)
        {
            ++par6;
        }

        if (par7 == 4)
        {
            --par4;
        }

        if (par7 == 5)
        {
            ++par4;
        }

        int var8 = par3World.getBlockId(par4, par5, par6);
        int var9 = par3World.getBlockMetadata(par4, par5, par6);
        int var10 = var9 & 7;

        if (var8 == this.theHalfSlab.blockID && var10 == par1ItemStack.getItemDamage())
        {
            if (par3World.checkIfAABBIsClear(this.theHalfSlab2.getCollisionBoundingBoxFromPool(par3World, par4, par5, par6)) && par3World.setBlockAndMetadataWithNotify(par4, par5, par6, this.theHalfSlab2.blockID, var10))
            {
                par3World.playSoundEffect((double)((float)par4 + 0.5F), (double)((float)par5 + 0.5F), (double)((float)par6 + 0.5F), this.theHalfSlab2.stepSound.getPlaceSound(), (this.theHalfSlab2.stepSound.getVolume() + 1.0F) / 2.0F, this.theHalfSlab2.stepSound.getPitch() * 0.8F);
                --par1ItemStack.stackSize;
            }

            return true;
        }
        else
        {
            return false;
        }
    }
}