That only works for missiles/ball with a height of 1 scanline though...right?
-bob
-----Original Message-----
From: M Zach [mailto:zach_in_sac@xxxxxxxxx]
Sent: Friday, February 25, 2005 12:07 PM
To: stella@xxxxxxxxxxxxxxxxxx; 2stella@xxxxxxxxxxxxxxxxxx
Subject: Re: [stella] Fastest missile/ball draw
Yeah, there is a faster way. It's a classic trick
using the stack pointer and PHP. The advanced
programming guide linked below explains it well.
Search for "using PHP" in the text file.
http://www.qotile.net/minidig/docs/2600_advanced_prog_guide.txt
--- Bob Montgomery <BobM@xxxxxxxxxxx> wrote:
> The fastest way to draw a missile or ball (of
> variable height) that I have come up with is this:
>
> lda BallHeight
> dcp BallYPosition
> sbc BallHeight
> sta ENABL ;+14
>
> Is there a faster way?
>
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