Re: [stella] Gravity Ball v014 - Please help!

Subject: Re: [stella] Gravity Ball v014 - Please help!
From: R Mundschau <rmundsc@xxxxxxxxx>
Date: Wed, 04 Jun 2003 01:00:08 -0500
Hi Dennis,

thanks for the feedback.  I will definitely move code out of the vertical
sync as you suggested.

Yes the "mountains" are supposed to be there.  I am debating whether or not
I want them in the final game:  Bumpy walls versus straight walls.

Thanks for the tip on changing lines 1201 and 1230.  The funny thing is.  I
started them at 3.   When I run the game in Stella for Mac, there is a large
blank at the bottom of the Window.  I increased the line counts until it
dissappeared.    Then,  I was confused because it seemed to display on the
computer, but it was too many lines by my counting.

thanks again!
Rob Mundschau

> From: "Dennis Debro" <ddebro@xxxxxxxxxxxxx>
> Reply-To: stella@xxxxxxxxxxx
> Date: Tue, 3 Jun 2003 21:51:06 -0400
> To: <stella@xxxxxxxxxxx>
> Subject: RE: [stella] Gravity Ball v014 -  Please help!
> Hi Rob, 
>> Please find attached the source code and binary for the current
> version of
>> Gravity Ball.  Its not much yet.  There are no controls just a looping
>> visual demo.   I want to show this demo at the Midwest Classic this
>> Saturday.  I need some help getting it debugged.
> As pointed out already Z26 reports 260 scan lines for the title and 282
> for the game display. If you changed lines 1201 and 1230 to ldy #3
> you'll get 262 lines.
> The screen jumps a little when switching from the title and the game
> screen too.
> You seem to be doing a lot during the vertical sync. This is a debate
> that's been going on for sometime. It seems some consoles are more
> sensitive than others to this behavior. I would recommend you moving
> these computations out of the vertical sync and doing them during the
> vertical blank. Some have been able to do computations during vertical
> sync with no problems but other haven't. Since you don't know how the
> machine running your demo will respond, it's probably best to move it
> out.
> In the game display the top part of the screen moves down (sort of like
> 2 reverse mountains). Is this behavior wanted? I've attached a screen
> shot of what I'm talking about.
> I haven't played on my CC, sorry. I only had time to run it in the
> emulator.
> Good luck on getting this done in time and I look forward to seeing the
> finished game. 
> Take care,
> Dennis
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