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Zeitgeist
Account closed
Registered: Dec 2001
Posts: 22 |
snow effect
Anybody got an idea how this snow-effect works? I remember faintly a demo from somewhen in the 90s where a snoopy lying on sum hut is "snowed" by down-coming pixels. What a tiny nice thing :).
Thanks for your help,
Hiram |
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Stryyker
Registered: Dec 2001
Posts: 468 |
Commodore Format had a snow effect, just some char blocks setup which are animated. You could have some sprites overlayed (or do the snow in the sprites) and check the height of the snow flakes. Just have a preset pattern for its sideways movement. Copy the char blocks across the screen, maybe with offset heights or it will become obvious. The hardest part is checking heights for if it becomes 'settled' on the ground etc. Maybe the CF archive has the issue that featured it - something like the 30s or late 20s issue. |
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Stingray
Account closed
Registered: Feb 2003
Posts: 117 |
Commodore Format #44 has got to versions of a snow field on it's cover tape (In Techie Tips), one in code and another in basic. There is also an example of a snow field, I have just checked out the Commodore Format Libray http://www.commodoreformat.co.uk/
But that don't have a tape image of #44 there. |
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iopop
Registered: Dec 2001
Posts: 317 |
Zeitgeist: I think the demo you are talking about is called "Snoovy Snoopy" and was done by God&Hake. But in that demo the "snow-flakes" are falling straight down. So,you just need to check the lower-border to see when they hit the ground.
If you want a more "realistic" version you could check "Christmas demo 93" by Tough. |
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Merman
Registered: Dec 2002
Posts: 140 |
There's also a "Merry Crestmas" part in a Crest demo.
The CF snow effect is based on Creatures 2, btw. |
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T.M.R
Account closed
Registered: Dec 2001
Posts: 749 |
Snowy Snoopy is a more complex routine than the ones by CF and so forth; the falling pixels interact with the background, can "slide" down slopes and will settle on a flat surface to build up. Given time the screen can fill to the top with snow (at which point it resets). |
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Richard
Registered: Dec 2001
Posts: 621 |
To do snow using sprites (say a whole screen, just like a starfiels). You probably need to use a sprite multiplexor routine. When I did snow for 'Splidges Snowball Caper' I used eight different chars to make the snow move down. Despite it wasn't that effective :) |
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Zeitgeist
Account closed
Registered: Dec 2001
Posts: 22 |
Yep, actually I was talking about that effect from "snoovy snoopy" iopop was meantioning. Sollutions using sprites or animated chars should be doable pretty much like a starfield. |
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JSL
Registered: Aug 2003
Posts: 56 |
hey zeitgeist.. here's JSL ..just read about your snow effect, think LN needs one now, actually me too, wanted to do a christmas 2003 demo, busy with some graphics but don't have group yet who wants to code it.. i btw. registered me today here in CSDB.. L8r.
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Dizzy Devil
Registered: Feb 2003
Posts: 11 |
Hi,
for a really cool snow effect, take a look at the demo "Road of Excess" by Triangle. (maybe not the same kind as you're
considering here?)
It features a part with what looks like a real simulation of snow particles that fall down at a slight angle, influenced by wind, and settle on the branches of a tree.
Dizzy
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