mine

--[[
Mining Program
v 1.3
by: Raxmo
--]]

--Variables--

depth = 0

ipass, inspect = turtle.inspect()
dpass, inspectDown = turtle.inspectDown()

trash = {"minecraft:dirt", "minecraft:stone", "minecraft:cobblestone", "minecraft:sand", "minecraft:grass", "minecraft:gravel", "minecraft:bedrock"}

--

-- Inspect down --

function checkDown()
  return not inspectDown.name == "minecraft:bedrock"
end

--

-- Check Walls --

function checkWalls()
  local passT = {}

  for i=1,#trash do
    passT[i] = inspect.name == trash[i]
  end

  local passcheck = false

  for j=1,#passT do
    passcheck = passT[j] or passcheck
  end

  return not passcheck
end

--

-- Go Up

function goUp()
  for k=1, depth do
    turtle.up()
  end
end

--

-- Dig Down

function digDown()
  if checkDown() then
    turtle.digDown()
    turtle.down()
    depth = depth + 1
    return true
  else
    return false
  end
end

--

-- Dig Walls

function digWalls()
  for l=1,4 do
    if checkWalls() then
      turtle.dig()
    end

    turtle.turnRight()
  end
end

--

-- Execution

function execute()
  while digDown() do
    digWalls()
  end
  goUp()
end

--

execute()