I would however suggest that you read the whole file into a table. Doesn't have any technical advantage, but for making the code easier to understand and modify it is king. It also doesn't give cancer to people like me with heavy self-diagnosed OCD.

What machines are this? For example pneumaticcraft's machines have functions associated with them. OpenPeripherals also allows functions for some tile entities like the vanilla chest.

Got it to work, thanks everyone!

Final code for reference and for lazy people from the future

	  t = all
	  sCurFolder = sCurFolder:match( "(.*)%..-" ) or ""
	  for key in sCurFolder:gmatch("[^%.]+") do
	    if not t[key] then break end

	    t = t[key]
	  end
	  curFolder = t

Didn't quite think of this, but how do I convert that string into an adress, making "all.Doors" into all.Doors? Is loadstring() the appropriate function?

So I have a door control system with a filesystem like structure where different doors are adressed by an adress which coresponds to a table. I've got almost everything done except for being able to move up 1 level in the system, similar to typing ".." in a file system
What I want to do now is being able to from an adress remove 1 step when backspace is pressed, for example making "all.Doors.AE2" into "all.Doors". I know how os.pullEvent and all that stuff works, but the specific function to use to remove everything including and after the first period from the end is where im lost. Barely used any of the string functions before.

If full code is needed
http://pastebin.com/sEE5XhXz

Exactly, it will malfunction, IE not work as he intended it to

Thats why you can use a timer with os.pullEvent: http://computercraft...mer_%28event%29

But yes, the parallel API should be just fine for your needs

While I am not experienced with parallel API and that might be the best thing for this, you could have an os.pullEvent() with a timer so that every 0.25 seconds it will check, then run your engine code, then check, the run your engine code and so on. Then again, you should be able to just use

-- Code

parallel.waitForAny(enginecode, buttoncode)

And then have it in the button code so that it returns if the button is pressed.

It will also malfunction because you have written sleep(0,5) with a comma, its supposed to be sleep(0.5)

Use ['code'] tags

shell.run("clear")
function checkforWalls()
  x = 1
  while true do
	if walls[x][1] == wanttox and walls[x][2] == wanttoy then return false end
	if walls[x] == nil then return true end
	x = x + 1
  end
end
function move()
  wanttodir = math.random(1,4)
  if wanttodir == 1 then wanttox = xpos wanttoy = ypos - 1 end
  if wanttodir == 2 then wanttox = xpos wanttoy = ypos + 1 end
  if wanttodir == 3 then wanttox = xpos - 1 wanttoy = ypos end
  if wanttodir == 4 then wanttox = xpos + 1 wanttoy = ypos end
  if checkforWalls() then
	xpos = wanttox
	ypos = wanttoy
  end
end

function load()
  shell.run(read())
end

function draw()
  term.setBackgroundColor(colors.green)
  term.clear()
  term.setCursorPos(1,1)
  x = 1
  while true do
	term.setBackgroundColor(colors.red)
	term.setCursorPos(walls[x][1],walls[x][2])
	term.write("X")
	x = x + 1
	if walls[x] == nil then break end
  end
end
function drawBug()
  term.setCursorPos(xpos,ypos)
  term.setBackgroundColor(colors.blue)
  term.write("#")
end

load()

while true do
  term.setBackgroundColor(colors.black)
  draw()
  term.setBackgroundColor(colors.black)
  drawBug()
  term.setBackgroundColor(colors.black)
  move()
  sleep(0,5)
end

Ill get to try fixing the problem, just need the code clear in front of me

After using turtle.craft() A LOT of times(I have a turtle picking up water and crafting it into fresh water) I encountered that the command turtle.craft() completely removes itself, to the point that the only way of getting it back is by restarting the game. Restarting the turtle does not work. Possible causes for this is either it crafting alot of times or the fact that I went to the nether while it was going so it might have gotten unloaded while turtle.craft()ing.

Code:

while true do
  turtle.select(1)
  turtle.placeDown()
  turtle.craft()
  turtle.select(2)
  while not turtle.drop() do end
end

EDIT: What I mean by it removing itself is that it returns "attempt to call nil"