Method onBlockPlaced

src/main/java/net/minecraft/block/BlockVine.java:392–396

Called by ItemBlocks just before a block is actually set in the world, to allow for adjustments to the IBlockstate

(World worldIn, BlockPos pos, EnumFacing facing, float hitX, float hitY, float hitZ, int meta, EntityLivingBase placer)

     * IBlockstate
     */
    public IBlockState onBlockPlaced(World worldIn, BlockPos pos, EnumFacing facing, float hitX, float hitY, float hitZ, int meta, EntityLivingBase placer)
    {
        IBlockState iblockstate = this.getDefaultState().withProperty(UP, Boolean.FALSE).withProperty(NORTH, Boolean.FALSE).withProperty(EAST, Boolean.FALSE).withProperty(SOUTH, Boolean.FALSE).withProperty(WEST, Boolean.FALSE);
        return facing.getAxis().isHorizontal() ? iblockstate.withProperty(getPropertyFor(facing.getOpposite()), Boolean.TRUE) : iblockstate;
    }

    /**
     * Get the Item that this Block should drop when harvested.