Method onItemUse

src/main/java/net/minecraft/item/ItemRedstone.java:25–53

Called when a Block is right-clicked with this Item @param pos The block being right-clicked @param side The side being right-clicked

(ItemStack stack, EntityPlayer playerIn, World worldIn, BlockPos pos, EnumFacing side, float hitX, float hitY, float hitZ)

     * @param side The side being right-clicked
     */
    public boolean onItemUse(ItemStack stack, EntityPlayer playerIn, World worldIn, BlockPos pos, EnumFacing side, float hitX, float hitY, float hitZ)
    {
        boolean flag = worldIn.getBlockState(pos).getBlock().isReplaceable(worldIn, pos);
        BlockPos blockpos = flag ? pos : pos.offset(side);

        if (!playerIn.canPlayerEdit(blockpos, side, stack))
        {
            return false;
        }
        else
        {
            Block block = worldIn.getBlockState(blockpos).getBlock();

            if (!worldIn.canBlockBePlaced(block, blockpos, false, side, null, stack))
            {
                return false;
            }
            else if (Blocks.redstone_wire.canPlaceBlockAt(worldIn, blockpos))
            {
                --stack.stackSize;
                worldIn.setBlockState(blockpos, Blocks.redstone_wire.getDefaultState());
                return true;
            }
            else
            {
                return false;
            }
        }
    }
}