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Forums > C64 Coding > Who invented sprite stretching?
2006-09-08 15:07
Graham
Account closed

Registered: Dec 2002
Posts: 990
Who invented sprite stretching?

The history of sideborder sprites or $D011 based effects is pretty much known, but what about sprite stretching? I tried to find out the first demo who used it and it is not as easy as it seems: All the early 1988 demos which I thought that they used sprite stretching used normal multiplexing like used in ESCOS for example (I am talking about these "rasterbars + huge spritescroll + samples parts).

The first demo I found which had real sprite stretching was "Cocktail" from Triad (Feb 1989). Any earlier examples?
2006-09-08 15:30
tlr

Registered: Sep 2003
Posts: 1732
I also think I first saw it done by Bob, but he might have gotten it from somewhere.
Horizon had a lot of this also, but maybe that was slightly later.

To provide some links for non strech scrollers, you mean stuff like this: No Limits, New Limits?
2006-09-08 15:52
chatGPZ

Registered: Dec 2001
Posts: 11157
i remember a lot of "huge sprite" stuff from XAKK demos... also mr.cross was quite a skilled coder, might be worth looking through them...
2006-09-08 16:40
Graham
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Registered: Dec 2002
Posts: 990
Yes, and this "huge sprite" stuff was NOT done via sprite stretching. I always thought it was, but when I looked into the raster routine I saw lots of sprite multiplexing and no $D017.
2006-09-08 16:44
chatGPZ

Registered: Dec 2001
Posts: 11157
mmmh thats weird *shrug* i wonder why it looks so much like stretched sprites then (ie low Y resolution)...
2006-09-08 18:29
T.M.R
Account closed

Registered: Dec 2001
Posts: 749
G: i think that, in some of the Xakk stuff, they just did it that way to save having to draw larger sprite objects - take the stock ones and scale the data up over a number of sprites vertically?

The first stretcher i remember seeing was Splasher 2 by Life (which is what i disassembled to figure out how to do one) but just now i downloaded and looked at the first Splasher, which was released June 1988, there's also a sprite stretched ROL scroller in that... not sure if it's the first, but if that CSDb release date is right there were stretchers in 1988.
2006-09-08 19:27
tlr

Registered: Sep 2003
Posts: 1732
Definately a stretcher in Splasher!. Terrible movements though.
2006-09-09 06:56
trident

Registered: May 2002
Posts: 81
I think the year 1988 of Splasher is wrong. The scroller says that the demo was made by Space Ace / Life who says he previously was in Eltronic/Shine. According to the csdb page on Shine they group was formed at the Horizon & Equinoxe party in 1989 (where the demo compo was filled with $d017 stretchers btw). So the Splasher demo is most likely made in 1989 rather than 1988.
2006-09-09 07:05
trident

Registered: May 2002
Posts: 81
Come to think of it, I always thought $d017 stretching was invented by Bob (or possibly Contring) when they were in Triad. The first released demo I saw with $d017 stretching was Cocktail. There are two quite crude $d017 stretchers in there and the scroll texts talk about this being the first sprite routine of its kind.
2006-09-09 08:10
Mason

Registered: Dec 2001
Posts: 459
Not that I know much of demos, but there was this demo from the Supply Team having this big scroll over rasters and sideborder.

I cant remember the name of it, but ask rambones on this one.
2006-09-09 08:41
j0x

Registered: Mar 2004
Posts: 215
Mason: No Limits and New Limits, I think. I assume Graham is talking about i.a. New Limits in his first post -- apparently they're muxed.

/j0x
 
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