digger

print("Digging Program by M3veronMast3r")
print("ONLY type Numbers or the Program returns Error")
write("lenght: ")
x=tonumber(io.read())
write("width: ")
z=tonumber(io.read())
write("depth: ")
y=tonumber(io.read())
function forward()
 while not turtle.forward() do
  turtle.dig()
  sleep(1)
 end
end
function down()
 while not turtle.down() do
  sleep(1)
 end
end
x1=0
z1=0
t=1
t1=1
while y > -1 do
 while z > 0 do
  while x > 0 do
   shell.run("clear")
   print("x: "..x)
   print("y: "..y)
   print("z: "..z)
   x=x-1
   x1=x1+1
   if x > 0 then
    turtle.dig()
    forward()
   end
  end
  while x1 > 0 do
   x=x+1
   x1=x1-1
  end
  z=z-1
  z1=z1+1
  if z > 0 then
   if t > 0 then
    turtle.turnRight()
    turtle.dig()
    forward()
    turtle.turnRight()
    t=0
   elseif t < 1 then
    turtle.turnLeft()
    turtle.dig()
    forward()
    turtle.turnLeft()
    t=1
   end
  elseif z < 1 then
   if y > 0 then
    if t < 1 then
     turtle.turnLeft()
     turtle.turnLeft()
     turtle.digDown()
     down()
     t=0
    elseif t > 0 then
     turtle.turnRight()
     turtle.turnRight()
     turtle.digDown()
     down()
     t=1
    end
   end
  end
 end
 while z1 > 0 do
  z=z+1
  z1=z1-1
 end
 y=y-1
end