Loading file with lua - problem

[Linuus]

Hello! I've created a simple mapeditor for a game I am making. It's just a array/list/table or whatever it's called within another, the index of the first indicating the x coordinate and the one within the y coordinate, and the value is the type of tile.
This is saved to a file, in which every 32 lines represents the content of the "outer" array, each of the lines have 20 numbers seperated by spaces.

Now I want to open this file in the game and asign it to an array again like this:

Code: Select all

map = {}
    i = 1
    file = io.open("/Users/linlin/LÖVE/Game2/map.txt", "r")
    for line in file:lines() do 
        map[i] = {}
        map[i] = split(lista, " ")
        i = i + 1
    end
    file.close()

but the game crashes with the text: "attempt to call global 'split' ( a nil value )"

How would you do this?

Thanks

[slime]

Use the love.filesystem module for file reading and writing.

Example:

Code: Select all

for line in love.filesystem.lines("map.txt") do
   [...]
end

[Linuus]

Still can't get it to work :/
And trying to figure out what's wrong is a nightmare when I can't print the variables.
Is there any way to bring up the a console to which I can print stuff? I'm on OSX, and i think i read somewhere around here that it only worked on Windows... Is that correct?

[Boolsheet]

You should be able to start LÖVE from the terminal to get the output of stdout. See the Mac OS X section of Getting Started.

[Santos]

So if it's started from the terminal, Lua's print function will output to the terminal, so you could do something like:

Code: Select all

function love.love
    a = 123
    print(a)
end

Also, Lua doesn't actually come with a function named "split", perhaps a function from here is what you're looking for?

[Linuus]

Thank you! I got it to work, it was pretty easy once I got a way to debug it
The problem was that I forgot to make the strings into numbers after loading them.

Yeah i made my own split function after looking at some examples online, I've studied python so I'm used to that function.

Thank you all again for the quick replies