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added on the 2013-01-18 02:11:49 by gm_bit  |
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comments
This one rules! I still don't understand how is it done :)
rulez added on the 2013-01-18 08:00:54 by Moving along 
Works on 48k!
Demo in .tap: http://www.speccy.pl/tygrys/GmBiT.tap
Demo in .tap: http://www.speccy.pl/tygrys/GmBiT.tap
Nice smooth wavy scroller!
cool
Pleasant little prod with nice chiptune.
Very nice.
moroz: I have a theory. It may be totally wrong but here is what I would do.
The font is is scrolling at character speed (8 pixels horizontally), is made of 5 pixels tall definition that are spread over vertically 144 pixel (give or take).
144 pixels divided by 5 pixels gives 3 characters in average to display any of the 5 pixels of a vertical slice of font.
If you redefine the character set to create a set of combinations of slope transitions from one color to the other you can recreate the big pixels by assembling three characters: The top transition, middle pixel, bottom transition.
Just select the correct slope factor based on the sine curve.
At least that's how I would do :)
moroz: I have a theory. It may be totally wrong but here is what I would do.
The font is is scrolling at character speed (8 pixels horizontally), is made of 5 pixels tall definition that are spread over vertically 144 pixel (give or take).
144 pixels divided by 5 pixels gives 3 characters in average to display any of the 5 pixels of a vertical slice of font.
If you redefine the character set to create a set of combinations of slope transitions from one color to the other you can recreate the big pixels by assembling three characters: The top transition, middle pixel, bottom transition.
Just select the correct slope factor based on the sine curve.
At least that's how I would do :)
pleaz youtube video !
Yogibeer : YT
roxxxxx!!!
dedicated to obtained ban in da google:
http://www.youtube.com/watch?v=02OvZ_JtFLs
dedicated to obtained ban in da google:
http://www.youtube.com/watch?v=02OvZ_JtFLs
russian scroller is russian
Nice tune ^_^
tune is cool, colors are SPECCY.
all in all smooth and fun to watch (once)
all in all smooth and fun to watch (once)
Awesome scroller
great work gm bit, keep it up. very smooth and fitting tune by master mmcm )
Nice effect!
Dbug:
I remember the big scrolll in "Lethal Formula" we made in Cult in 1991 on Amiga used a similar method as you described.
My guess here, would be to make some (0 to 5) pairs of rows of plots horizontally and then make a total vertical fill of the whole screen then. Also remember that the Spectrum has no characterscreen, but it has more CPU power(3,5 mHz, i remember?), so a vert-fill would be very suitable, i guess.
Lets see this effect on Oric ;)
Dbug:
I remember the big scrolll in "Lethal Formula" we made in Cult in 1991 on Amiga used a similar method as you described.
My guess here, would be to make some (0 to 5) pairs of rows of plots horizontally and then make a total vertical fill of the whole screen then. Also remember that the Spectrum has no characterscreen, but it has more CPU power(3,5 mHz, i remember?), so a vert-fill would be very suitable, i guess.
Lets see this effect on Oric ;)
Oh, no character screen on the spectrum? I guess I was confused by the color system then, two colors per 8x8 block? Guess I interpreted that as some form of char map :)
On the Oric... well I was looking for idea for the 30th anniversary demo, so why not :)
On the Oric... well I was looking for idea for the 30th anniversary demo, so why not :)
Go on Dbug! :)
The Spectrum has a bitmap with 8 pix per byte, like the C64 hires screen.
But it is true that the color-screen is a character screen excatly like the C64, so you guessed that right :)
This scroll princip should be easy:
Draw (up to) 6 rows of sinus plots based on the 5 pixels font, and then do a logical eor/xor vertical fill of the whole screenarea.
But it is true that the color-screen is a character screen excatly like the C64, so you guessed that right :)
This scroll princip should be easy:
Draw (up to) 6 rows of sinus plots based on the 5 pixels font, and then do a logical eor/xor vertical fill of the whole screenarea.
nice done, awesome music
lovely!
dammit, /M missed radiobutton<3
nice to see a fluid fullscreen effect like this on stock spectrum, cool.
A nice small ZX48K prod.
yes good work ! thanx backspace for youtube link^^
cool
Molodchina! Gdem nowyh demok s neterpeniem na AAAcompo2013!!
nice!
Not bad. I like its tune.
good start of the year
nice
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