[Finished] Branch Mine: 5x5 Quarry

-- NOTES
-- Will mine out at 22x3x2(lxwxh) tunnel, and then branch out of each side ~every 4 blocks
-- does not currently account for a full inventory

-- PLANS
-- inventory sensitive
-- cross hatched branches
-- empty space sensitive
-- light sensitive

-- VARS

-- Basic Functions
function refuel( ammount )
   local fuelLevel = turtle.getFuelLevel()
   if fuelLevel == "unlimited" then
      return true
   end
   local needed = ammount or (xPos + zPos + depth + 2)
   if turtle.getFuelLevel() < needed then
      local fueled = false
      for n=1,16 do
         if turtle.getItemCount(n) > 0 then
            turtle.select(n)
            if turtle.refuel(1) then
               while turtle.getItemCount(n) > 0 and turtle.getFuelLevel() < needed do
                  turtle.refuel(1)
               end
               if turtle.getFuelLevel() >= needed then
                  turtle.select(1)
                  return true
               end
         end
      end
   end
   turtle.select(1)
   return false
end
return true
end
function tryForward(tf)
   if not refuel() then
      print( "Not enough Fuel" )
      return false
   end
   if turtle.detect() then
      turtle.dig()
   end
   if tf then -- if move forward
      turtle.forward()
   end
   return true
end
function turnLeft()
   if not refuel() then
      print( "Not enough Fuel" )
      return false
   end
   turtle.turnLeft()
   return true
end
function turnRight()
   if not refuel() then
      print( "Not enough Fuel" )
      return false
   end
   turtle.turnRight()
   return true
end
function tryUp(tf)
   if not refuel() then
      print( "Not enough Fuel" )
      return false
   end
   if turtle.detectUp() then
      turtle.digUp()
   end
   if tf then -- if move up
      turtle.up()
   end
   return true
end
-- Advanced Functions
function leftBranch()
   local banLen
   banLen = 4
   -- first branchB
   for l=1, banLen do -- go the length of var
         tryForward(true)
         tryUp(false)
      end
      turnRight()
      turnRight()
      for l=1, banLen do -- go back to start
         tryForward(true)
      end
      turnLeft()
      turnLeft()
   -- 2nd-6th branchB's
   for tun=1, 5 do -- 5 tunnels per side
      -- setup
      banLen=banLen+4
      turnRight()
      for l=1, 4 do
         tryForward(true)
      end
      turnLeft()
      -- mine
      for l=1, banLen do -- go the length of var
         tryForward(true)
         tryUp(false)
      end
      turnRight()
      turnRight()
      for l=1, banLen do -- go back to start
         tryForward(true)
      end
      turnLeft()
      turnLeft()


   end
end
function rightBranch()
   local banLen
   banLen = 4
   -- first branchB
   for l=1, banLen do -- go the length of var
         tryForward(true)
         tryUp(false)
      end
      turnLeft()
      turnLeft()
      for l=1, banLen do -- go back to start
         tryForward(true)
      end
      turnRight()
      turnRight()
   -- 2nd-6th branchB's
   for tun=1, 5 do -- 5 tunnels per side
      -- setup
      banLen=banLen+4
      turnLeft()
      for l=1, 4 do
         tryForward(true)
      end
      turnRight()
      -- mine
      for l=1, banLen do -- go the length of var
         tryForward(true)
         tryUp(false)
      end
      turnLeft()
      turnLeft()
      for l=1, banLen do -- go back to start
         tryForward(true)
      end
      turnRight()
      turnRight()
   end
end
function main() -- dig 20x3x2(lxwxh) tunnel
   local maLen = 22
   for l=1, maLen do -- go maLen blocks
      tryForward(true) -- dig first block in front
      tryUp(false)
      turnLeft()
      tryForward(true)
      turnRight()
      tryUp(false)
      turnRight()
      tryForward(true)
      tryForward(true)
      turnLeft()
      tryUp(false)
      turnLeft()
      tryForward(true)
      turnRight()
   end
   turnRight()
   turnRight()
   for l=1, maLen do -- go maLen blocks (back the way we came, so that we are at start)
      tryForward(true)
   end
   turnLeft()
   turnLeft() -- is now back at start

   -- first tunnel starts @ (currentL+2) and is 4 long, increment start by +4 and length by +4 per tunnel
   tryForward(true)
   tryForward(true) -- get to currentL+2
   turnLeft()
   tryForward(true)

   leftBranch()
   print("Left side Done")

   turnRight()
   turnRight()
   tryForward(true)
   turnRight()
   for l=1, maLen do
      tryForward(true)
   end
   turnLeft()
   turnLeft()

   tryForward(true)
   tryForward(true)
   turnRight()
   tryForward(true)

   rightBranch()
   print("Right side Done")
   turnLeft()
   turnLeft()
   tryForward(true)
   turnLeft()
   for l=1, maLen do
      tryForward(true)
   end
   turnRight()
   turnRight()

end

-- Main Program
main()
print("Branch Done")