Method updateTick

src/main/java/net/minecraft/block/BlockReed.java:32–61

(World worldIn, BlockPos pos, IBlockState state, Random rand)

    }

    public void updateTick(World worldIn, BlockPos pos, IBlockState state, Random rand)
    {
        if (worldIn.getBlockState(pos.down()).getBlock() == Blocks.reeds || this.checkForDrop(worldIn, pos, state))
        {
            if (worldIn.isAirBlock(pos.up()))
            {
                int i;

                for (i = 1; worldIn.getBlockState(pos.down(i)).getBlock() == this; ++i)
                {
                    ;
                }

                if (i < 3)
                {
                    int j = state.getValue(AGE);

                    if (j == 15)
                    {
                        worldIn.setBlockState(pos.up(), this.getDefaultState());
                        worldIn.setBlockState(pos, state.withProperty(AGE, 0), 4);
                    }
                    else
                    {
                        worldIn.setBlockState(pos, state.withProperty(AGE, j + 1), 4);
                    }
                }
            }
        }
    }

    public boolean canPlaceBlockAt(World worldIn, BlockPos pos)
    {