printing variables

I'm using allegro to make my own version of pong, and I want the score to be kept track everytime it hits the paddle. So I have points++; for keeping track of points, but it won't print in textout_ex. Is there another print/textout function in allegro to print variables? I did not find anything in a search.

this doesn't work

Code:

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textout_ex(screen, font, points, 250, 250, makecol(0, 0, 0), makecol(0, 0, 0));

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Have you tryed to use as 3rd variable a text variable instead a numeric one?

Code:

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sprintf(buffer,"%d",points);
textout_ex(screen, font,buffer...

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Niara

that still didnt work. It still ends up saying i need "something" instead of a variable inside textout.

Here's a bright idea, post the exact error message! Instead of having us figure it out.

Quote:

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Originally Posted by Sentral

Here's a bright idea, post the exact error message! Instead of having us figure it out.

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don't have to be a jerk about it, just ask.

240 C:\Dev-Cpp\Codex\Pong\Pong.cpp invalid conversion from `int' to `const char*'

240 C:\Dev-Cpp\Codex\Pong\Pong.cpp initializing argument 3 of `void textout_ex(BITMAP*, const FONT*, const char*, int, int, int, int)'

Maybe this: http://www.die.net/doc/linux/man/man3/textout_ex.3.html

I'm guessing your 'points' is of type int, which cannot be used for the third parameter. The error is basically telling you what to fix.

PS: Perhaps you should have not been a lazy poster, and you wouldn't have gotten a jerk remark.

even if points is changed to a const char* variable it still won't run correctly. Windows will say an error has occured and close the program. I just want to know if there is another function like textout_ex that I can use to display variables, specifically ints/doubles.

> don't have to be a jerk about it, just ask.
He shouldn't need to ask, if you'd asked a smart question in the first place.
http://www.catb.org/~esr/faqs/smart-questions.html

There shouldn't be any problem with the code I posted, I imagine you have something like:

Code:

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static int points=0;
function drawpoints(BITMAP screenbuffer)
{
char buffer[20];
sprintf(buffer,"%d",points);
textout_ex(screenbuffer,font,buffer,250,250,makecol(0,0,0),makecol(0,0,0));
}

---

Because you haven't posted any piece of code I'm assuming that you use doublebuffering for drawing it all, so don't draw the text directly to the 'screen' default bitmap.

A second thing, read the Allegro documentation, in the function call you posted you are using black text with black background... I think you won't see the points with that color combination.

If your program still crashes the problem should be from other part, not this one (I suppose).

Niara