love.filesystem - I am either stupid or wrong

[Xcmd]

I just don't get how opening files and reading them works in Love. I've tried the following:

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function load()
	myFile = love.filesystem.newFile("data.txt")
	love.filesystem.open(myFile)
	myString = love.filesystem.lines(myFile)
end

function update()

end

function draw()
	love.graphics.draw(mySring, 50, 50)
end

But I get an error about over-loaded functions in Draw. All I want to be able to do is read lines from a file at-will and understand what I'm doing and why. I know the examples include a line iterator, but this assumes several things that aren't true:

1) I'm only reading from a single source and that I already know the name of the data file I'm trying to read.
2) I want to read every single line from the file all at once.
3) I want to store the read lines in an array.

None of that is true for my project. So what am I not understanding here? Where am I falling down?

[bartbes]

You missed that love.filesystem.lines returns an iterator, just as the one in the lua io lib does.
This iterator is then used to return lines, small example:

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it = love.filesystem.lines(someFile)
line1 = it()
line2 = it()

So, you could still use lines in the following fashion:

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myString = ""
for line in love.filesystem.lines(myFile) do
    myString = myString .. line .. "\n"
end

Or, easier:

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myString = love.filesystem.read(myFile)

(where the last one even keeps line returns exactly the way they are)

[Xcmd]

I thought it might be something like that, but I never used Lua's own file io system so I had no idea.

[ramenudle]

For what it's worth...

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function draw()
	love.graphics.draw(mySring, 50, 50)
end

You have mySring instead of myString...dunno if that makes a bit of difference, but I thought I'd point it out anyway

[appleide]

But I get an error about over-loaded functions in Draw

happens when you put the wrong type of parameters into the draw function. e.g nil. (see above post).

[Xcmd]

So you're trying to say I'm BOTH stupid AND wrong? Lovely.

[bartbes]

You should ask you questions better, like: "Why doesn't this work?", this will leave you with a bigger ego in the end. (yes, we're mean)

[Xcmd]

Long time, no update, right? Anyway. So I made the following piece of code:

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function load()
	textFile = "myData.txt"
	fileHandler = love.filesystem.lines(textFile)
	stringOut = fileHandler()
end

function update(dt)
	
end

function draw()
	love.graphics.draw(stringOut, 50, 50)
end

When I run it (on Linux: Ubuntu 9.04 x86), it gives me a blank screen but no errors. But when I screw something up in the file on purpose (doesn't matter what) and get the Love error screen, then fix it and hit "restart", I see the line that's read from my file just fine. Am... am I doing something wrong or is this a Linux hiccup?

[bartbes]

You haven't set a font, add love.graphics.setFont(love.default_font) to your load function. Reason it works after an error is that the error screen sets a font for it to use.

[Xcmd]

You haven't set a font, add love.graphics.setFont(love.default_font) to your load function. Reason it works after an error is that the error screen sets a font for it to use.

Ah. One day I really will listen to myself when I tell me not to program late at night.