Nethermark

-- Revision history
-- 20140805 initial draft, untested

-- Goal:
-- Turtle program to stair up to 54, drop a quarry plus marker,
-- go 200 blocks (dig forward, dig up), drop a quarry plus marker
-- turn right, go 200 blocks, drop the last marker,
-- turn right, turn right, go 200 blocks, turn left, go 200 blocks
-- this should allow me to come up (lava permitting) activate the markers, install the tesseract,
-- and start a nether quarry

-- Caveats:
-- For now I'm going to hard code the start y position, yeah, I know, but it's easy.

-- It also will go badly if any of the marker drop points happen to be in a lava flow.
-- be prepared to have extra markers.
-- It could also be a drag if the stair way floods with lava.

-- Put marker pluses in slot 2

-- SET THIS TO THE REAL Y COORD
startY=32
qWidth=200

for x=1, 54-startY do
  turtle.digDown()
  if turtle.detect() then
    turtle.dig()
  end
  if turtle.detectUp() then
    turtle.digUp()
  end
  turtle.up()
  if turtle.detect() then
    turtle.dig()
  end
  turtle.forward()

  -- drop steps if we hit a pocket of air.
  if not turtle.detectDown() then
    turtle.select(3)
    turtle.placeDown()
  end
end

turtle.select(2)
turtle.place()

for x=1, qWidth do
  if turtle.detect() then
    turtle.dig()
  end
  if turtle.detectUp() then
    turtle.digUp()
  end
  turtle.forward()
end

turtle.turnRight()
turtle.place()

for x=1, qWidth do
  if turtle.detect() then
    turtle.dig()
  end
  if turtle.detectUp() then
    turtle.digUp()
  end
  turtle.forward()
end

turtle.place()

turtle.turnRight()
turtle.turnRight()

for x=1, qWidth do
  turtle.forward()
end

turtle.turnLeft()

for x=1, qWidth do
  turtle.forward()
end