View difference between Paste ID: vLfV3QfT and AiyFczy0

 --Farside's Fuzzy Navigation API
 --get file stuff sorted declare variables
 
 map = {}
 newdirection = 0
 
 function getmapy()
   --reads for file and gets coords
   if fs.exists("mapy.sqrl") then
     memory = fs.open("mapy.sqrl", "r")
     --do stuff
     for i = 1, 5, 1  do
       local line = memory.readLine()
       if line then
          map[i] = line
       end
     end
   else
     memory = fs.open("mapy.sqrl", "a")
     memory.writeLine("0")
     memory.writeLine("0")
     memory.writeLine("0")
     memory.writeLine("1")
     memory.writeLine(tostring(turtle.getFuelLevel()))
   end
       memory.close()
 end
 --x = 0
 --y = 0
 --z = 0
 --compass = 1
 --new function write to file new position
 local function mapy()
   --write coords and heading to file
   memory = fs.open("mapy.sqrl", "w")
   for i = 1, 5, 1 do
     memory.writeLine(map[i])
   end
   memory.close()
 end
 local function locationy()
   getmapy()
   x = tonumber(map[1])
   y = tonumber(map[2])
   z = tonumber(map[3])
   compass = tonumber(map[4])
   print("locationy function")
   print("compass = ", map[4])
 
   if compass == 1 then
     x = x + 1
     map[1] = tostring(x)
     mapy()
     print("moving")
   end
   if compass == 2 then
     y = y + 1
     map [2] = tostring(y)
     mapy()
   end
   if compass == 3 then
     x = x - 1
     map[1] = tostring(x)
     mapy()
   end
   if compass == 4 then
     y = y - 1
     map[2] = tostring(y)
     mapy()
   end
 
   memory.close()
 end
 
 function forward()
  -- print(map[1], ", ", map[2])
   print("forward function")
   local fuel = tonumber(map[5])
   turtle.forward()
   local fuelb = turtle.getFuelLevel()
  -- print("fuel and fuelb ", fuel, ", ", fuelb)
 
   if fuel > fuelb then
     locationy()
     map[5] = tostring(turtle.getFuelLevel())
     mapy()
     -- print(x)
    -- print(y)
    -- print(z)
    -- print(compass)
 
   end
 end
 
 function heading()
   if newdirection == 1 then
     compass = 1
     map[4] = tostring(1)
   end
   if newdirection == 2 then
     compass = 2
     map[4] = tostring(2)
   end
   if newdirection == 3 then
     compass = 3
     map[4] = tostring(3)
   end
   if newdirection == 4 then
     compass = 4
     map[4] = tostring(4)
   end
  -- else
  --   print("I have lost my direction", newdirection)
  -- end
   mapy()
 end
 
 
 function turnRight()
   turtle.turnRight()
   if tonumber(map[4]) < 4 then
     newdirection = tonumber(map[4]) + 1
     print("here", newdirection)
     heading()
 
   elseif tonumber(map[4]) == 4 then
     newdirection = 1
     heading()
   end
  -- else
    -- print("turnright failed")
 
 end
 function turnLeft()
   turtle.turnLeft()
   if tonumber(map[4]) > 1 then
     newdirection = tonumber(map[4]) - 1
     heading()
 
   elseif tonumber(map[4]) == 1 then
     newdirection = 4
     heading()
   end
 end
 
 function up()
   local fuel = tonumber(map[5])
   turtle.up()
   local fuelb = turtle.getFuelLevel()
   if fuel > fuelb then
     map[3] = map[3] + 1
     map[5] = fuelb
     mapy()
   end
 end
 function down()
   local fuel = tonumber(map[5])
   turtle.down()
   local fuelb = turtle.getFuelLevel()
   if fuel > fuelb then
     map[3] = map[3] - 1
     map[5] = fuelb
     mapy()
   end
 end