rooms

local tArgs = {...}
local x = tonumber(tArgs[1])
local y = tonumber(tArgs[3])
local z = tonumber(tArgs[2])
local size = ""
local fuel = turtle.getFuelLevel()
local lane = 0
local startPos = 0

turtle.select(1)
term.clear()
term.setCursorPos(1, 1)
term.setTextColor(colors.white)

local function getStartPos()

 if x == 1 then
  if y % 2 == 0 then
   return 1
  else
   return 4
  end
 elseif z == 1 then
  if y % 2 == 0 then
   return 1
  else
   return 2
  end
 end

 if y % 2 == 0 then
  return 1
 else
  if z % 2 == 0 then
   return 4
  else
   return 3
  end
 end

 return 1

end

local function digx()  --Dig straight lines
 for f = 1,x do
  turtle.dig()
  while not turtle.forward() do
   turtle.dig()
  end
 end
end

local function changeLane() --Change lane when digging

 if lane == 0 then --If lane=0 turn right
  turtle.turnRight()
  turtle.dig()
  while not turtle.forward() do
   turtle.dig()
  end
  turtle.turnRight()
  lane = 1
  return
 end

 if lane == 1 then --If lane=1 turn left
  turtle.turnLeft()
  turtle.dig()
  while not turtle.forward() do
   turtle.dig()
  end
  turtle.turnLeft()
  lane = 0
  return
 end

end

local function goUp() --Go up to next layer
 while not turtle.up() do
  turtle.digUp()
 end
 turtle.turnRight()
 turtle.turnRight()
end

local function backToStart() --Go back to starting position when finished

 for f = 1,y do
  turtle.down()
 end
 if startPos == 1 then
  turtle.turnRight()
  turtle.turnRight()
 elseif startPos == 2 then
  for b = 1,x do
   turtle.back()
  end
 elseif startPos == 3 then
  turtle.turnRight()
   for c = 1, z do
    turtle.back()
   end
  turtle.turnLeft()
   for d = 1,x do
    turtle.back()
   end
 elseif startPos == 4 then
  turtle.turnRight()
   for e = 1,z do
    turtle.forward()
   end
  turtle.turnRight()
 end

end

local function checkArgs() --Check if arguments provided by the user are correct

 if #tArgs ~= 3 then
  return false
 end

 for a = 1,3 do
  if tonumber(tArgs[a]) == nil then
   return false
  end
 end

 if x < 1 or y < 1 or z < 1 then
  return false
 end

 return true

end

if not checkArgs() then --If arguments are not correct print an error message
 term.setTextColor(colors.red)
 print("Invalid arguments!")
 term.setTextColor(colors.white)
 print("Specify size of the room like this:")
 term.write("rooms")
 term.setTextColor(colors.blue)
 print(" lenght width height")
 return
end

size = x * y * z

startPos = getStartPos()

if fuel - size <= 0 then --Check if there is enough fuel
 term.setTextColor(colors.orange)
 print("Not enough fuel!")
 return
end

x = x - 1
y = y - 1
z = z - 1

print("Digging...")
for j = 1,y do
 for i = 1,z do
   digx()
   changeLane()
 end
 digx()
 goUp()
end

for k = 1,z do
  digx()
  changeLane()
end
digx()
backToStart()
print("Done!")
x = x + 1
y = y + 1
z = z + 1
print(size, "blocks cleared")