Tunnel

os.loadAPI("FuncApi")

local args = {...}

local usage = "[distance] [wide] [side]"
local side = "right"

x = args[1]
y = args[2]
side = args[3]

if y == nil then
  y = 1
end

FuncApi.argStartup(args, 3, usage)

for s = 1,y do

for i = 1,x do
  FuncApi.forward(1,"x",1)
  FuncApi.dig(0)
  FuncApi.dig(1)
  FuncApi.checkFuel()
  if (i % 12 == 0) then
    turtle.select(15)
    turtle.placeUp()
    turtle.select(1)
  end
end
FuncApi.gohome(1)
if (side == "left") then
  FuncApi.turnLeft()
  for i = 1,s do
    FuncApi.forward(3,"y",-1)
  end
  FuncApi.turnRight()
elseif ( side == "right") then
  FuncApi.turnRight()
  for i = 1,s do
    FuncApi.forward(3,"y",1)
  end
  FuncApi.turnLeft()
else
  if y ~= 1 then
    error("Not a valid side")
  end
end
end