Dualis Bug : Sprite X coordinate ?

[Mollusk]

Hi everyone !

 

I just started programming on DS (I have a little experience on gba too), and I seem to get a bug on a Dualis (at least it seems like it's coming from dualis) : when I set a sprite x position at 511 (or -1), maybe anything superior to 255, not sure, the emulator just stops...

 

Does anyone have an idea to solve this, or would it be my code ? (it's exactly the same I used on gba, and the same I use to set the Y position, so I find it pretty weird not to work for x...

 

Thanks in advance !

 

Mol

 

Edit : using dualis r6 or r7, did it on both...

Edited April 10, 2005 by Mollusk

[mic]

What kind of sprite is it? 256-color or 16-color? Rotoscaled or plain? H-flipped? V-flipped?

[Mollusk]

It's a 16 color sprite, no rotscale, not flipped. Just a plain 16 color sprite.

And it seems like V-flip hangs up the emu too (I'm not the only one to have gotten that problem...)

[mic]

Well, I can see why V-flip would cause trouble since I had inserted a division-by-zero when the V-flip was set while I was debugging, and then left the code in there..

Not sure about the clipping problems, since that code is shared for 256-color and 16-color sprites, but I'll take a look at it.

[Mollusk]

Ok, thanks.

 

I'll do some testing to see which sprites exactly don't work, and I'll post the demo with the code...

 

I have another quick question (I know I should create another post...), but do rotscales work ? It looks like creating a sprite on the bottom screen with rotscale doesn't work (the sprite doesn't show at all), while it does show on the top screen...

[mic]

Rotoscale works for 256-color sprites, but not for 16-color ones atm.

[Mollusk]

After testing, it does this only on 16 color sprites. Hangs up from x = 490 to 511 (on both screens)

[Mollusk]

did you end up finding anything wrong ?

[mic]

If you have a demo available that uses it, I could test it.

[Mollusk]

Ok, no problem

 

You can get the demo here : http://membres.lycos.fr/existepas/bug/ (bug.zip)

Edited April 14, 2005 by Mollusk

[mic]

Thanks. I'll take a look at it in the morning.

[ieremiou]

Hmm, well that was interesting...

I was messing around with your program.

Seems to work just fine in iDeaS.

 

But in Dualis.. it got weird i went up to like 600 and then was backtracking when it was like minusing by 100 and go to -10 and then crashed Dualis.

 

That was weird. Lol

 

Note: The ship looks better in Dualis, in iDeaS it's all squished.

 

Greets

~Paladinate~

[Mollusk]

iDeaS works pretty well, except for touch screen and 16 color sprites (they're all messed up) Oh, and it doesn't show a sprite that's half off-screen (as soon as it moves outscreen a little, it disappears)

 

Dualis works perfectly, except for that little point with 16 color sprites...

[Robert]

Looks like I got different results...

 

DSemu versions 2d to 2g shows the counter, and it increments as expected, but no ship. All other DSemu versions have problems.

 

Dualis r7 - start it, press left key and it crashes the emu. Press right key and it works up to x=491 then it crashes.

 

Ideas 2 - works, but ship is a different shape, and it doesn't handle it properly at the sides. It's either fully there or gone.

[mic]

I think I've fixed it now (see the screenshot):