Digmode test - Mining Turtle

-- Define starting position (replace with your coordinates)
local startX, startY, startZ = 0, 0, 0

-- Ask for excavation distance
local distance = redstone.getInput("Distance?")

-- Function to check if inventory is full
function isInventoryFull()
  for slot = 2, #turtle.getItemCount() do
    if turtle.getItemCount(slot) == 0 then
      return false
    end
  end
  return true
end

-- Function to deposit inventory (except coal)
function depositInventory()
  for slot = 2, #turtle.getItemCount() do
    turtle.suckUp(slot)
  end
end

-- Function to refuel
function refuelTurtle()
  local chest = turtle.getFront()
  if chest.getInventory() then
    local coalSlot = chest.getItemSlot("coal")
    if coalSlot then
      turtle.suckUpFromSlot(chest, coalSlot)
      turtle.selectSlot(1)
      turtle.insertItem(1)
    end
  end
end

-- Main program loop
while distance > 0 do
  -- Check fuel before digging
  local fuelLevel = turtle.getItemCount(1)
  if fuelLevel <= 0 then
    refuelTurtle()
    if turtle.getItemCount(1) == 0 then
      break -- Pause program if no fuel available
    end
  end

  -- Dig and move forward
  turtle.dig()
  turtle.forward()
  distance = distance - 1

  -- Check for completion or full inventory
  if distance == 0 then
    turtle.back() -- Return one block after completion
  elseif isInventoryFull() then
    turtle.goto(startX, startY, startZ) -- Return to starting point
    depositInventory()
  end
end

-- Print message upon program completion/pause
if distance == 0 then
  print("Excavation complete!")
else
  print("Refueling required. Program paused.")
end