Computer Craft: Turtle - Tunneler 3000 Helper V1.0

--[[
  Mining Turtle Tunneler 3000 Helper
  --> Used to reposition the Turtle for the next Tunnel
  Version: ComputerCraft 1.8 (Minecraft 1.12.2)
  Program Version: 1.0 (Updated: September 9th 2025)
  --> This script expects:
  --> The turtle to be docked on a tunneler 3000 docking station (Chest under and chest behind)
  ---> You will need to reposition the 2 Chests after running this Program
  --> Will move the turtle to the left or the Right of its current position into the next tunnel starting position.
]]

  ------------------ Config ------------------
-- Tunneler 3000 Helper (fixed)
write("Enter tunnel width (Ex 4): ")
local TUNNEL_WIDTH = tonumber(read())

write("Enter tunnel offset (Ex 2): ")
local TUNNEL_OFFSET = tonumber(read())

write("Move to the Left or Right? (L=Left, R=Right): ")
local TUNNEL_DIRECTION = string.upper(read())  -- <- read as string, not number

if not (TUNNEL_WIDTH and TUNNEL_WIDTH > 0) then error("Width must be > 0") end
if not (TUNNEL_OFFSET and TUNNEL_OFFSET >= 0) then error("Offset must be >= 0") end
if TUNNEL_DIRECTION ~= "L" and TUNNEL_DIRECTION ~= "R" then error("Direction must be L or R") end

local function stepForward()
  while not turtle.forward() do
    if turtle.detect() then turtle.dig() else sleep(0.2) end
  end
end

local total_moves = TUNNEL_WIDTH + TUNNEL_OFFSET

-- turn toward the side aisle
if TUNNEL_DIRECTION == "L" then turtle.turnLeft() else turtle.turnRight() end

-- move sideways into the next tunnel start
for i = 1, total_moves do stepForward() end

-- face original forward direction again
if TUNNEL_DIRECTION == "L" then turtle.turnRight() else turtle.turnLeft() end

print("Done!")