felling

args = {...}

x = 1
y = 1
z = 1
f = 1

tasks = {[1] = 3,3,3}
m_table = {
  ["fd"] = function()
    turtle.forward()
    if (f == 1) then
      z = z+1
    elseif (f == 2) then
      x = x+1
    elseif (f == 3) then
      z = z-1
    elseif (f == 4) then
      x = x-1
    end
  end,
  ["bk"] = function()
    turtle.back()
    if (f == 1) then
      z = z-1
    elseif (f == 2) then
      x = x-1
    elseif (f == 3) then
      z = z+1
    elseif (f == 4) then
      x = x+1
    end
  end,
  ["rt"] = function()
    turtle.turnRight()
    if (f < 4) then
      f = f+1
    else
     f = 1
    end
  end,
  ["lt"] = function()
    turtle.turnLeft()
    if (f > 1) then
      f = f-1
    else
     f = 4
    end
  end,
  ["up"] = function()
    turtle.up()
    y = y + 1
  end,
  ["dn"] = function()
    turtle.down()
    y = y - 1
  end

}

function move(direction)
  local _move = m_table[direction]
  if (_move) then
    _move()
  end
end

function moveCoords(_x,_y,_z)
    if (y < _y) then
      repeat
        move("up")
      until(y == _y)
    else
      repeat
        move("dn")
      until(y == _y)
    end
    repeat
      move("rt")
    until(f == 2)
    if (x < _x) then
      repeat
        move("fd")
      until(x == _x)
    else
      repeat
        move("bk")
      until(x == _x)
    end

    repeat
      move("lt")
    until(f == 1)

    if (z < _z) then
      repeat
        move("fd")
      until(z == _z)
    else
      repeat
        move("bk")
      until(z == _z)
    end
end

moveCoords(tasks[1])