digdownV3

hOst = false
hDown = false
hNord = true


pos = vector.new(0,0,0)

function swapBool(Bool)
 if Bool then
  return false
 else
  return true
 end
end

function chngHBool(Int)
 if Int == 1 then
  hOst = swapBool(hOst)
 elseif Int == 2 then
  hDown = swapBool(hDown)
 else
  hNord = swapBool(hNord)
 end
end

function chngCoord(Int)
 if Int == 1 then
   if hOst then
   pos.x = pos.x + 1
  else
   pos.x = pos.x - 1
  end
 elseif Int == 2 then
   if hDown then
   pos.y = pos.y - 1
  else
   pos.y = pos.y + 1
  end
 else
  if hNord then
   pos.z = pos.z + 1
  else
   pos.z = pos.z - 1
  end
 end
end

function ChkFuel()
 if turtle.getFuelLevel() == 0 then
  turtle.select(1)
  if turtle.refuel(1) == true then
   print('Dozapravke na ',pos.x, "x",pos.y, "x",pos.z)
  end
 end
end

function Fwd(Int, Bool)
  for a = 1, Int  do
   turtle.dig()
   ChkFuel()
   turtle.forward()
   if Bool then
    chngCoord(3)
   else
    chngCoord(1)
   end
   print('moving ',pos.x, "x",pos.y, "x",pos.z)
  end
end

function Turn(Bool)
  if Bool then
  turtle.turnRight()
  Fwd(1,false)
  turtle.turnRight()
   chngHBool(3)
  return false
 else
  turtle.turnLeft()
  Fwd(1,false)
  turtle.turnLeft()
   chngHBool(3)
  return true
  end
end

function down()
 turtle.digDown()
 turtle.down()
  chngCoord(2)
 turtle.turnLeft()
 turtle.turnLeft()
  chngHBool(3)
  chngHBool(1)
end

print('Vvedite Shiriny')
mX = tonumber(read())
print('Vvedite glubinu')
mY = tonumber(read())

print('  Starting at ',pos.x, "x",pos.y, "x",pos.z)

Fwd(1,true)
turtle.turnLeft()
Fwd(mX/2,false)
 chngHBool(1)
turtle.turnRight()


for c=1, 2 do
 turtle.digUp()
 turtle.up()
  chngCoord(2)
end
 chngHBool(2)

print('  Dig down at ',pos.x, "x",pos.y, "x",pos.z)

turn = true


for y = 1, mY+3 do
 if y > 1 then
  down()
 end
  for x = 1,  mX do
   if mX > 1 then
    Fwd(mX - 1,true)
   else
    Fwd(mX,true)
   end
   if x ~= mX then
    turn = Turn(turn)
   end
  end
 end

print('Begin dig up, steps up = ', mY + 3, "\n   ", pos.x, "x",pos.y, "x",pos.z)

 chngHBool(2)
for b=1, mY do
  turtle.digUp()
  turtle.up()
   chngCoord(2)
end
print('Ending operation ', pos.x, "x",pos.y, "x",pos.z)