minage turtle coffre

-- declaration des variables
print("Longueur des tunnels ?")
tunnelLenght  = read()
tunnelLenght  = tonumber(tunnelLenght)

numLoop = tonumber(0)
print("Nombre de tunnels ?")
nbLoop = read()
nbLoop = tonumber(nbLoop)

turtle.refuel()

function digger()
    i = tonumber(tunnelLenght)
    repeat
        turtle.dig()
        turtle.forward()
        turtle.digUp()
        turtle.digDown()
        i = i - 1
    until i == 0
end

function dropper()
    slotNum = tonumber(1)
    repeat
    turtle.select(slotNum)
    turtle.drop()
    slotNum = slotNum + 1
    until slotNum == 17
end

function b2b()
    if (numLoop == 0) then
        turtle.turnLeft()
        turtle.turnLeft()
        i = tonumber(0)
        repeat
            turtle.forward()
            i = i +1
        until i == tunnelLenght
    else
        turtle.turnLeft()
        turtle.turnLeft()
        i = tonumber(0)
        repeat
            turtle.forward()
            i = i +1
        until i == tunnelLenght
        turtle.turnRight()
        i = numLoop * 3
        repeat
            turtle.forward()
            i = i - 1
        until i == 0
        turtle.turnLeft()
    end
end

function b2m()
    turtle.turnLeft()
    i = numLoop * 3
    while (i > 0) do
        turtle.forward()
    end
end

function newTunnel()
    numLoop = numLoop + 1
    i = tonumber(3)
    repeat
        turtle.dig()
        turtle.forward()
        turtle.digUp()
        i = i - 1
    until i == 0
    turtle.turnLeft()
end

while (nbLoop > 0) do
    digger()
    b2b()
    dropper()
    b2m()
    newTunnel()
    nbLoop = nbLoop - 1
end