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


--canyonmaker turtle.  moves up then forward 6 spaces, drops TNT in a line every 4 spaces and returns.



function bomb(x)
 for i = 1, x do
  turtle.placeDown(t.restack(1,8))
  redstone.setOutput("bottom", true )
  os.sleep(0.15)
  redstone.setOutput("bottom", false )
 end
end

term.clear() -- Clears the screen
term.setCursorPos(1,1) -- Fixes the cursor position
write("turtle fuel level is ")
print(turtle.getFuelLevel())
print("place explosives starting in slot 1")
print("The more bombs, the deeper the canyon. how many bombs per drop??")
local bombs = t.readNum()
print("how long will the canyon be?")
local range = t.readNum()
print("drop height?")
local drop = t.readNum()
local breadcrumbs = 6

t.up(drop)
t.forward(6)
for i=1, range, 4 do
t.forward(5)
breadcrumbs=breadcrumbs+4
bomb(bombs)
end
t.back(breadcrumbs)
t.down(drop)