Wheat Autoharvester v1.0.3

-- Wheat farming turtle by Razputin
-- Modified and bugfixed by Pugnacious
-- Optimized and cleaned up by Kreezxil 10/6/2013

--[Code for the turtle to leave start position and go to farming level]--
function start()
   turtle.forward()
   turtle.down()
   turtle.down()
end

-- rewrote this function to be extensible and to eliminate the m7
function move(i)
   for j=1,i do
      turtle.forward()
   end
end

--[Down Command]--
function down()
   turtle.down()
end

--[Code for the turtle to return toward start position]--
function returnTurtle()
   move(7)
   turtle.up()
end

--[Planting code]--
function plant()
   turtle.digDown()
   turtle.placeDown()
end

--[Code for returning turn depending on the 'tray' you end on. Odd/even]--
function returningLeftTurn()
   turtle.turnLeft()
   turtle.up()
   turtle.up()
end

--[Ditto]--
function returningRightTurn()
   turtle.turnRight()
   turtle.up()
   turtle.up()
end

--[For turning at the end of each row of plots. Odd/even]--
function leftTurn()
   turtle.turnLeft()
   turtle.forward()
   turtle.turnLeft()
end

--[Ditto]--
function rightTurn()
   turtle.turnRight()
   turtle.forward()
   turtle.turnRight()
end

--[Function for each row of plots]--
function row()
   for i=1,5 do
      plant()
      move()
   end
   plant()
end


--['Tray' -the body.]--
-- by kreezxil to make trayOdd() and trayEven() more readable

function trayBody()
   turtle.refuel()

   for i=1,3 do
      row()
      rightTurn()
      row()
      leftTurn()
   end

end

--['Tray' odd.]--
-- Added a refuel for those of us who require fuel

function trayOdd()
   trayBody()
   row()
   rightTurn()
  down()
end

--['Tray' even]--
-- Added a refuel for those of us who require fuel

function trayEven()
   trayBody()
   row()
   leftTurn()
  down()
end

--[Start of the executable part of program]--
-- Added refuel and set the order of inventory selections.
-- Inventory box 1 is for fuel and the rest is for seeds.

turtle.refuel()
start()
turtle.select (2)
trayOdd()
turtle.select(3)
trayEven()
turtle.select(4)
trayOdd()
turtle.select(5)
trayEven()
returningLeftTurn()
returnTurtle()
returnTurtle()
returnTurtle()
move(7)
turtle.turnRight()
turtle.back()
turtle.up()
turtle.up()
turtle.back()