-- [Functions] --

function refuel()
  if turtle.getItemCount(16)>5 then
	if turtle.getFuelLevel() < 500 then
		turtle.select(16)
		turtle.refuel(5)
	end
  end
end

function forward()
	turtle.dig()
	turtle.forward()
end

function up()
	turtle.digUp()
	turtle.up()
end

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

function empty()
	for i=1,15 do
		turtle.select(i)
		turtle.drop()
	end
end

function chunkload()
	forward()
	turtle.select(5)
	turtle.drop()
	turtle.dig()
	turtle.back()
end

function clear()
	refuel()
	turtle.select(5)
	turtle.turnLeft()
	turtle.place()
	empty()
	turtle.select(5)
	turtle.dig()
	turtle.turnRight()
	turtle.forward()
	--turtle.dig()
	--turtle.transferTo(5)--quarry
	turtle.turnRight()
	turtle.forward()
	turtle.turnLeft()
	turtle.dig()
	turtle.transferTo(8)--dynamo
	turtle.up()
	turtle.dig()
	turtle.transferTo(7)--tesseract
	turtle.turnLeft()
	turtle.forward()
	turtle.turnRight()
	turtle.dig()
	turtle.transferTo(6)--enderchest
	turtle.back()
	turtle.down()
end

function next()
	refuel()
	turtle.turnRight()
	i = 0
	repeat
		turtle.dig()
		turtle.forward()
		i = i+1
	until i == 9
	turtle.turnLeft()
end

function back()
	refuel()
	turtle.turnLeft()
	i = 0
	repeat
		turtle.dig()
		turtle.forward()
		i = i+1
	until i == 9
	turtle.turnRight()
end

function build()
	refuel()
	turtle.digUp()
	forward()
	turtle.dig()
	turtle.select(5)
	turtle.place()--quarry
	turtle.turnRight()
	forward()
	turtle.turnLeft()
	turtle.dig()
	turtle.select(8)
	turtle.place()--dynamo
    up()
	turtle.dig()
	turtle.select(7)
	turtle.place()--tesseract
	turtle.turnLeft()
	forward()
	turtle.turnRight()
	turtle.dig()
	turtle.select(6)
	turtle.place()--enderchest
	turtle.back()
	turtle.down()
end

clear()
next()
build()
back()
chunkload()
next()