--1:z+  2:x-   3:z-  4:x+


--Functii
function mergi(fata)
	if fata==1 then
		turtle.forward()
	else
		turtle.down()
	end
end
function sapa(fata)
	if fata==1 then
		turtle.dig()
	else
		turtle.digDown()
	end
end
function mergi_coord(X_dorit, Y_dorit, Z_dorit, prioritate_Y)
	--Mergi pe X
	if my_X>X_dorit then
		turn(2)
	end
end
function turn(poz)
	print("Turn " .. poz)
	if poz==heading then
		return
	end
	if poz==heading-1 then
		turtle.turnLeft()
	end
	if poz==heading+1 then
		turtle.turnRight()
	else
		turtle.turnRight()
		turtle.turnRight()
	end
	heading = poz
end
function load_coord()
	--load home
	local home_file = fs.open("home.lua", "r")
	home_X=home_file.readLine()
	home_Y=home_file.readLine()
	home_Z=home_file.readLine()
	home_file.close()
	--load my_coord
	local my_file = fs.open("my.lua", "r")
	my_X=my_file.readLine()
	my_Y=my_file.readLine()
	my_Z=my_file.readLine()
	heading=my_file.readLine()
	my_file.close()
end
function save_coord()
	local my_file = fs.open("my.lua", "w")
	my_file.write(my_X)
	my_file.write("\n")
	my_file.write(my_Y)
	my_file.write("\n")
	my_file.write(my_Z)
	my_file.write("\n")
	my_file.write(heading)
	my_file.write("\n")
	my_file.close()
end


load_coord()
turn(3)
save_coord()