Sprites

Using, learning, programming and modding the Gigatron and anything related.
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at67
Posts: 292
Joined: 14 May 2018, 08:29

Sprites

Post by at67 »

Here's a video of the new sprite routines I have been working on for ROMvX0:

https://www.youtube.com/watch?v=F9XdTe4zZ9w

There is more work that needs to be done in reducing sprite flicker, (especially as sprites approach the top of the screen), and a double buffered rendering mode needs to be added for 64K Gigatron's, (which will eliminate sprite flicker and glitches completely).

There's detailed info in the video's description.
Hans61
Posts: 8
Joined: 29 Dec 2020, 16:15
Location: Saxonia
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Re: Sprites

Post by Hans61 »

Very good work, an incredible performance, I love it.
delpozzo
Posts: 30
Joined: 03 Jun 2020, 18:47

Re: Sprites

Post by delpozzo »

This is fantastic! I'm looking forward to tinkering with these new sprite routines :-)
at67
Posts: 292
Joined: 14 May 2018, 08:29

Re: Sprites

Post by at67 »

Cheers guys!

Here's an updated video of where I am at, it uses a rather sneaky cheat of extending VBlank by an extra 20 scanlines to allow most of the sprites to be redrawn before active video display, (as well as sorting by ascending Y), thus almost completely eliminating flicker and glitches.

https://www.youtube.com/watch?v=1TVFWlMzO3k
at67
Posts: 292
Joined: 14 May 2018, 08:29

Re: Sprites

Post by at67 »

Another update, I have added Bullets; 4x4 user definable patterns that use XOR to draw and restore, (all the usual caveats apply when XOR drawing).
https://www.youtube.com/watch?v=mT-jkaNwsbM
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