clayminer.lua

-- variation on box miner but instead of bobbing up and down like a sewing needle this is the more classic run straight through
-- also as I'm doing this for clay I'll set it to only dig up or down if there is clay present.

depth=3 -- small makes testing retrieval easier if I get flip logic wrong
width=8
length=8
flip=0

local function pauseMe()
  print("Press any key...")
  os.pullEvent("key")
end

local function goUp()
  while not turtle.up() do
    turtle.digUp()
  end
end

local function mineClayUp()
      local has_block, data = turtle.inspectUp()
      if has_block then
        if data.name == "minecraft:clay" then
          turtle.digUp()
        end
      end
end

local function mineClayDown()
      local has_block, data = turtle.inspectDown()
      if has_block then
        if data.name == "minecraft:clay" then
          turtle.digDown()
        end
      end
end

local function goForward()
    while not turtle.forward() do
      mineClayDown()
      mineClayUp()
      turtle.dig()
      mineClayUp()
      mineClayDown()
    end
end

local function goDown()
  turtle.digDown()
  turtle.down()
end

turtle.digDown()
turtle.down()
turtle.digDown()
turtle.down()

for z=1,depth do

  for x=1,length do

    for z=1,width do
      goForward()
    end  -- at width
    if flip==0 then
      flip=1
      turtle.turnRight()
      goForward()
      turtle.turnRight()
    else
      turtle.turnLeft()
      goForward()
      turtle.turnLeft()
      flip=0
    end
  end -- at length

  goDown()
  goDown()

  if flip==0 then
    turtle.turnLeft()
  else
    turtle.TurnRight()
  end
--  print("Debug: Check heading and depth.")
--  pauseMe()
end -- at depth

print("Return to surface (if applicable).")
x=0
while not turtle.up() or x<(depth+2) do -- up until you hit air or reach 'depth' height (relative 0)
  goUp()
  x=x+1
end