Love crashes without error, don't know whats wrong 7.1/7.2

[Socram]

Hi, so I've tried this out on both 7.1 and 7.2 with no avail, so its nothing version specific.

I've been working on a little game and it is coming a long nicely but I've come across a crash that I can not seem to fix, or find a reason for. I know the exact offending code but I just don't know why it is crashing. The bit of code is:

Code: Select all

	for p=1, # do
		for o=1, #  do
			self.terrainMap[o][p] = terrainChunk:new(256,512,512,512)
		end
	end

Everything works fine how it is as long as i keep the two #'s above at 1 (which is pointless...) however if I try to store more than one "terrainChunk" (a functioning object defined elsewhere) within the table it crashes. I also know that the table is set up correctly because I was able to create any old 2d array when I changed the assignment to a string or integer.

Each "terrainChunk" is an object that is essentially a 2d table that consists of a bunch of individual square objects, so this "terrainMap" would be a table of tables of objects. Could there be some sort of memory issues or something? Does lua or love have some sort of issue on 3d tables? or I guess in this case it's 4d?

If you need any other information or want to see some other code let me know.

Thank you for your time!

[Lafolie]

As far as I know the only use of # is to read the length of a table. You should put:

Code: Select all

for i = 1, # table_to_check do
--blah
end

Although this could probably be done even tidier with ipairs.

[vrld]

Do you have the .love file so we can have a look at the it ourselves? Without that we can only guess it's something that terrainChunk:new() does.

[BlackBulletIV]

As far as I know the only use of # is to read the length of a table. You should put:

Code: Select all

for i = 1, # table_to_check do
--blah
end

Although this could probably be done even tidier with ipairs.

It is also used to get the length of a string, a better alternative to string.len:

Code: Select all

for i = 1, #str do
  -- ...
end

[vrld]

Guys, the # is a placeholder for a number, not real code:

Everything works fine how it is as long as i keep the two #'s above at 1 (which is pointless...)

[Robin]

Where is self.terrainMap defined? I have a suspicion it is

Code: Select all

self.terrainMap = {{}}

which is not good.

Maybe

Code: Select all

   for o=1, # do -- notice I swapped o and p
      self.terrainMap[o] = {}
      for p=1, #  do
         self.terrainMap[o][p] = terrainChunk:new(256,512,512,512)
      end
   end

will work.

[vrld]

That would produce an error, about trying to index a nil value. But LÖVE crashes without error, which points to a bug in LÖVE.

[Robin]

Oh. But Socram, if you gave us a .love of your game, that would help.

[Lafolie]

Oh. But Socram, if you gave us a .love of your game, that would help.

Do you think it would be worth making an announcement/sticky thread regarding this? Not so much a forum rules, but a guideline giving people tips on how to help us help them. The more information they give us the faster their problem will inevitably be solved.

[Robin]

Do you think it would be worth making an announcement/sticky thread regarding this? Not so much a forum rules, but a guideline giving people tips on how to help us help them. The more information they give us the faster their problem will inevitably be solved.

It might very well. I have been thinking that a wiki page on this would be useful, but a sticky will probably be read more often.