[ComputerCraft] Redwood Lumberjack

redwood.lua

--[[
            
  Redwood chopper                  
                      
  Place at the base of a redwood tree and let 'er rip
                                         
--]]

                                                                               
turtle.refuel(1)                                                               
                                                                               
-- dig into the tree one space                                                 
turtle.dig()                                                                   
turtle.forward()                                                               
                                                       
-- figure out if we're on the left or right side of the tree
-- check left first         
turtle.turnLeft()                                                              
                                                                               
if false == turtle.detect() then                                               
  turtle.turnRight()                                                           
end                                                                            
                                                                               
-- chop the current level then move up                                         
doneClimbing = false                                                           
                                                                           
repeat                                                                         
  -- first spot is already dug                                                 
  for i = 1, 3 do                                                              
    turtle.dig()                                                               
    turtle.forward()                                                           
    turtle.turnRight()                                                         
  end                                                                          
          
  -- if there's something above, dig it
  if turtle.detectUp() then
    turtle.digUp()
    turtle.up()                                                                
  else                                                                         
    -- otherwise we're done                                                    
    doneClimbing = true                                                        
  end                                                                          
until doneClimbing                                                             
                                                                               
-- safely back to the ground                                                   
while false == turtle.detectDown() do                                          
  turtle.down()                                                                
end