I ran it with gcube and I didn’t experience any flickering, do I have the right code? Does it only happen when you try it on the Wii or on gcube too?

This is the code I have now: http://pastie.org/659273

i took some time to comment my code as thoroughly as i could to make what going on or what i was trying to do very clear (maybe sometimes too clear?). i suspect it can get a little annoying sometimes, but it sure helped me wrap my head around what i was doing.

first working c program too! kinda excited, really…
(although it’s kind of a pity it’s such an inane program…)

http://jj.idele.org:8000/blog/wp-content/uploads/misc/tictactoe.zip

Could you zip up your code so we could take a look at it?

The other option if you have a Wii, could be to use a graphics library like GRRLIB and use PNG images instead, I haven’t had any flickering issues with GRRLIB.

unfortunately, after i found myself stumped with the flicker problem i decided to try to make it work with the wpad for the moment, so i rewrote much of my code…

and after reading your post and getting excited about the possibility of using the ir again, i started getting it into my new code again… and it worked fine without the line you gave me. so i suppose it is not so unfortunate, really…

however, come to think about it, the flicker is still there if i try to put a background image. if i just use smaller images for the circles and the crosses, then the jpegs don’t really flicker at all… but when i put in a background, even with your VIDEO_Flush(); line, it starts flickering again… it’s just that i decided not to use a background jpeg anymore.

any insights? it would be nice to see if i can ever get a background image to work. i haven’t tried your other method, but i think i’m done with c for now. i’ll write back when i have results.

thanks again!

VIDEO_Flush();
VIDEO_WaitVSync();

If that doesn’t work, you can try this clearscreen function which basically just writes all black pixels to the screen:

// Clears the screen. Sets screen to black.
void clearscreen() {
int x,y;
for(y=0;y<486;y++)
for(x=0;x<320;x++)
xfb[0][x+320*y]=COLOR_BLACK;
}

when i read this tutorial, it indeed seemed a little pointless, but i figured a tic-tac-toe was an interesting project to begin programming (this is my first time writing in c), so i’ve been trying to get it to work with the wiimote ir code from a few posts back.

even though things have been working (more or less), i stumbled into a problem i don’t really know how to solve.

with the code i have so far, my jpg files flicker intensely (specially the background). i know it has to do with the way i’m clearing the screen (necessary to move the ir cursor around) because if i comment out the following line:

VIDEO_ClearFrameBuffer (rmode, xfb, COLOR_BLACK);

the picture looks like it is supposed to.

my question, then, is: how can i avoid the flicker while at the same time clearing the screen so i can use a cursor that follows the wiimote ir?

thanks in advance.

I’ve tried to learn C from online tutorials, but up until I found these, every single one i’ve come accross has assumed I already knew a previous programming language – and used lingo that I didn’t “get.” Maybe i’m just bad at searching for tutorials.

At least I have a basic idea of how C works now, and i can read SOME source codes and tell what is going on, but i’ve got a long way to go.

This is quite easy and I should be able to do a quick tutorial on it this weekend.