condense this code

[cheatchki]

I am looking to condense this code, however I can't find any solutions that work.

on rightclick on cobblestone:
    if block 2 north of event-block is air:
        add north to {_directions::*}
    if block 2 east of event-block is air:
        add east to {_directions::*}
    if block 2 south of event-block is air:
        add south to {_directions::*}
    if block 2 west of event-block is air:
        add west to {_directions::*}
        
    if size of {_directions::*} != 0:
        set {_direction} to random integer from 1 to (size of {_directions::*})
        if {_directions::%{_direction}%} is north:
            set block 1 north of event-block to cobblestone
            set block 2 north of event-block to cobblestone
            
        if {_directions::%{_direction}%} is east:
            set block 1 east of event-block to cobblestone
            set block 2 east of event-block to cobblestone
            
        if {_directions::%{_direction}%} is south:
            set block 1 south of event-block to cobblestone
            set block 2 south of event-block to cobblestone
            
        if {_directions::%{_direction}%} is west:
            set block 1 west of event-block to cobblestone
            set block 2 west of event-block to cobblestone

The main issue I am having is that I would like to set the direction via variable however that doesn't work, so any one else have any other ideas.

 

[Pikachu]

While you can't use variables for directions, this may work

loop 2 times:
  set block loop-num (random direction out of ({_direction} where [true])) of event-block to cobblestone

 

[cheatchki]

hmm Ill try it tonight. and get back to you
[doublepost=1507071582,1507055484][/doublepost]Sadly, no that doesn't work. I will most likely go and request an enchantment to add variable support in the block expression