/miner/digDown

os.unloadAPI("/miner/movement")
os.loadAPI("/miner/movement")

local depth
local torchPlacementInterval=7
local maxRetryCount=20

function returnAfterRetryFailed()
  movement.move(0, 0, 0)
  movement.face("NORTH")

  write("\Move retry count reached!\n")
  print("Did you reach bedrock?")
  error()
end

function mineBlockAndMoveDown()
  local retryCount=0
  while movement.down()==false do
    if retryCount>=maxRetryCount then
      returnAfterRetryFailed()
    end

    if turtle.digDown()==false then
      turtle.attackDown()
    end
    sleep(0.500)

    retryCount=retryCount+1
  end
end

function digDown(depth)
  for i=1,depth do
    mineBlockAndMoveDown()
  end
end

local args={...}

if #args >= 1 then
  depth=tonumber(args[1])
  digDown(depth)
else
  print("digDown [depth]")
end