BASIC Vertical Scroller

Legacy · Post by **Legacy** » Tue Feb 03, 2009 3:22 pm

here is a vert scroller that needs some help:

10 rem default val 36865,38 (pal)
20 poke 36879,8
30 print"[clr/yel]"
40 poke 36865,150
50 print "a long time ago in a"
60 print ""
70 print " galaxy far far away"
90 print ""
100 print "    was born the"
150 print ""
160 print "      mos 6502"
210 print ""
220 print "    microprocessor"
270 print ""
280 print " the rest is history"
300 for i = 149 to 0 step -.5
305 poke 36865,i
310 for t = 1 to 50:next
320 next i

Hehe, sorry RAIDER, thanks for the tip, I should've seen it myself but I was just happy to get the movement synch'd with production of text, didn't mean to make you look bad, your idea is much better and saved like 1000 lines of code! woot

DELETED · Post by **DELETED** » Wed Feb 04, 2009 4:41 am

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Richard James · Post by **Richard James** » Wed Feb 04, 2009 5:02 am

Hey that is pretty Awesome for a BASIC program. Good use of technical knowledge applied to a simple piece of hardware can produce amazing effects. Your half way to creating a demo in BASIC.

DELETED · Post by **DELETED** » Wed Feb 04, 2009 9:32 am

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orion70 · Post by **orion70** » Wed Feb 04, 2009 9:56 am

Very nice! It would be a perfect alternative to the "tele-type like" on-screen instructions seen in the loader of many tap games. While "tele-type" was more reminiscent of early 1980s computers, this style fits more with the "Star Wars" movie intro, thus being 1980sh again.

Pedro Lambrini · Post by **Pedro Lambrini** » Wed Feb 04, 2009 4:36 pm

Could be a really nice intro for a game. Bluestar (when's Bluestar 2 coming Kweepa?!

) or Dragonwing with this scroller would be really cool.

Very impressive stuff. The VIC and the people in this scene never cease to amaze me!

rhurst · Post by **rhurst** » Wed Feb 04, 2009 8:13 pm

MRaider:

Personally, I'd move the screen out of view and fully populate it with the desired text, and then start twiddling 36865 to scroll it vertically into view

Dude, what are you smoking?

That's what's being done here.

Couldn't help myself, I batted cleanup in my heyday!

DELETED · Post by **DELETED** » Thu Feb 05, 2009 3:48 am

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DELETED · Post by **DELETED** » Thu Feb 05, 2009 6:00 am

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Mike · Post by **Mike** » Thu Feb 05, 2009 6:43 am

This one uses a smaller ball

:

Code: Select all

1 X=55:Y=60:DX=1:DY=1:@ON:@CLR
2 X2=X+DX:IFX2=0ORX2=159THENDX=-DX
3 Y2=Y+DY:IFY2=0ORY2=191THENDY=-DY
4 @0,X,Y:@1,X2,Y2:X=X2:Y=Y2:GOTO2

Run it with MINIGRAFIK active.

DELETED · Post by **DELETED** » Thu Feb 05, 2009 7:01 am

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Mike · Post by **Mike** » Thu Feb 05, 2009 7:05 am

I could add a POKE36879,25 somewhere.

DELETED · Post by **DELETED** » Thu Feb 05, 2009 7:06 am

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orion70 · Post by **orion70** » Thu Feb 05, 2009 7:27 am

It's interesting to see what can be done with the humble VIC in a few lines of BASIC code - wonder why they didn't use it back in the day for games intro, electronic journals, and so on.

Also, Minigrafik proves to be very powerful in everything concerning graphics (excuse my naïveté). BTW Mike, if you could post code in lower case, it would be better, because one can directly copy and paste it in VICE.

DELETED · Post by **DELETED** » Thu Feb 05, 2009 10:32 am

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