obsidian_miner

print("Loading Robust Turtle API...")
local load = os.loadAPI("t")
if load then
  print("Robust Turtle API loaded.")
else
 print("Robust Turtle API not found in the root directory with filename t")
 print("Attempting to download as t from pastebin...")
 os.sleep(2)
 local response = http.get("http://pastebin.com/raw.php?i= e0UksEtT")
 if response then
    print( "Success." )
    local sResponse = response.readAll()
    response.close()
    local file = fs.open( "t", "w" )
    file.write( sResponse )
    file.close()
    print( "Downloaded as t")
    load = os.loadAPI("t")
    if load then
     print("Robust Turtle API installed & loaded.")
    end
 else
    print( "Download Failed. Please Install Manually." )
    return
 end
end



--obsidian floor harvesting turtle
--can also be used to harvest block layers

write("Place turtle above a corner of the obsidian layer.")
print("")
write("Is the rest of the layer to the right or left of the turtle? ")
local block = 1
local turn = read()
while turn ~= "left" and turn ~= "right" do
 print("Please enter left or right")
 turn = read()
end
write("How many rows of obsidian? ")
local rows = term.readNum()
t.down()
for i=1, rows do
 if turn == "left" then
  while t.compare(1) or t.compareLeft(1) do
   t.digUp()
   t.forward()
  end
  turtle.turnLeft()
  t.digUp()
  t.forward()
  turtle.turnLeft()
  turn = "right"
 elseif turn == "right" then
  while t.compare(1) or t.compareRight(1) do
  t.digUp()
  t.forward()
  end
  turtle.turnRight()
  t.digUp()
  t.forward()
  turtle.turnRight()
  turn = "left"
 end
local tries = 0
 while not turtle.compare() do
  t.digUp()
  t.forward()
  tries = tries+1
  if tries > 10 then
   break
  end
 end
end
t.up()