Platerform construction turtle (FINI)

taille_x = 0
taille_y = 0
slot = 0
a = false

function tourne()                       --ESQUIVE
  if taille_y % 2   == 0 then
    a = false
  else
    a = true
  end
    if a == false then
      turtle.turnRight()
      turtle.forward()
      turtle.placeDown()
      turtle.turnRight()
    end
    if a == true then
      turtle.turnLeft()
      turtle.forward()
      turtle.placeDown()
      turtle.turnLeft()
    end
end

function recherche(nom_bloc)
  while slot <16 do

    while turtle.getItemCount() == 0 do
        if slot == 16 then
          slot = 0
        end
        slot = slot +1
        turtle.select(slot)
    end
    local data = turtle.getItemDetail(slot)
    if data.name == nom_bloc then
      turtle.select(slot)
      return 0
    end
    slot = slot +1
    turtle.select(slot)
  end
end

function mine(x,y,nom_bloc)
  recherche(nom_bloc)
while taille_y < y  do
  while taille_x < x  do
    if turtle.getItemDetail() == nil then
      recherche(nom_bloc)
    end
    turtle.placeDown()
    turtle.forward()
    taille_x = taille_x +1
    print("x = "..taille_x)
  end
  print("y = "..taille_y)
  tourne()
  taille_y = taille_y + 1
  taille_x = 0
end
end

local arg = { ... }
mine(tonumber(arg[1]), tonumber(arg[2]), tostring(arg[3]))