plant

write("Abstand zwischen den Baeumen: ")
distanceBetween = read()

function turn180()
  turtle.turnLeft()
  turtle.turnLeft()
end

function walk(distance)
  for i=1, distance do
    if turtle.detect() then
      turtle.dig()
    end
    turtle.forward()
  end
end

function plant()
  turn180()
  turtle.select(1)
  turtle.place()
  turn180()
end

write("Breite der Plantage(in Baeumen): ")
plantationWidth = read()

write("Laenge der Plantage(in Baeumen): ")
plantationLength = read()

nextTurn = 0 -- 0=right 1=left
for i=1, plantationWidth do
  for j=1, plantationLength-1 do
    plant()
    walk(distanceBetween)
  end
  plant()

if nextTurn == 0 then
    turtle.turnRight()
    walk(distanceBetween+1)

    turtle.turnRight()
    walk(2)

    nextTurn = nextTurn + 1
  elseif nextTurn == 1 then
    turtle.turnLeft()
    walk(distanceBetween+1)

    turtle.turnLeft()
    walk(2)

    nextTurn = nextTurn - 1
  end
end