Controller

shell.run("clear")
print "Arrows - Turn and move"
print "Space - Up"
print "Shift - Down"
print "W - Dig above"
print "S - Dig in front"
print "X - Dig below"
print "0 - Exit"
while true do
    event, k = os.pullEvent("key")
    if(k == 203)then
        turtle.turnLeft()
    elseif(k == 200)then
        turtle.forward()
    elseif(k == 208)then
        turtle.back()
    elseif(k == 205)then
        turtle.turnRight()
    elseif(k == 17)then
        turtle.digUp()
    elseif(k == 31)then
        turtle.dig()
    elseif(k == 57)then
        turtle.up()
    elseif(k == 54 or k == 42)then
        turtle.down()
    elseif(k == 11)then
        error()
    elseif(k == 45)then
        turtle.digDown()
    end
end