View difference between Paste ID: 1MF0NDpg and HDpDqdCB

 local t = turtle
 
 local function forward(x)
 	for i = 1, x do
 		t.forward()
 	end
 end
 
 local function rTurn(x)
 	for i = 1, x do
 		t.turnRight()
 	end
 end
 
 local function lTurn(x)
 	for i = 1, x do
 		t.turnLeft()
 	end
 end
 
 local function up(x)
 	for i = 1, x do
 		t.up()
 	end
 end
 
 local function down(x)
 	for i = 1, x do
 		t.down()
 	end
 end
 
 local function back(x)
 	for i = 1, x do
 		t.back()
 	end
 end
 
 local function gotoStart()
 	rs.setAnalogOutput("left", 0)
 	os.sleep(1)
 	up(2)
 	back(1)
 	lTurn(1)
 	forward(1)
 end
 
 local function rowUp()
 	for i = 1, 4, 1 do
 		t.dig()
 		up(1)
 	end
 end
 
 local function rowDown()
 	for i = 1, 4, 1 do
 		t.dig()
 		down(1)
 	end
 end
 
 local facing = t.detect()
 
 local height = t.detect(down)
 
 local function harvest(x)
 	for i = 1, x do
-		rTurn(1)
+		if facing == true then
-			if facing == true then
+			if height == true then
-				if height == true then
+				rowUp()
-					rowUp()
+				rTurn(1)
-				else
+
-					rowDown()
+				rowDown()
-				end
+				rTurn(1)
 			end
-				if height == true then
+		else
-					forward(1)
+			if height == true then
-					lTurn(1)
+				forward(1)
-					rowUp()
+				lTurn(1)
-				else
+				rowUp()
-					forward(1)
+				rTurn(1)
-					lTurn(1)
+
-					rowDown()
+				forward(1)
-				end
+				lTurn(1)
 				rowDown()
 				rTurn(1)
 			end
 		end
 	end
 end
 
 local function gotoHome()
 	back(2)
 	lTurn(1)
 	forward(1)
 	down(5)
 	os.sleep(1)
 	rs.setAnalogOutput("left", 15)
 	os.sleep(3600)
 end
 
 while true do
 	gotoStart()
 	rowUp()
 	harvest(6)
 	gotoHome()
 end