World: r3wp

Interesting...people still making Atari games.


One of my team makes emulators for about 15 old game machines, his 
goal is to preserve them before all is forgotten.

Good night, see you !

Vladimir, can we see what you've done so far with your Yoomp-like 
game ?

I did some special-effects demos a few years ago, maybe I can advise 
on techniques to improve it.

Well... it was supossed to be just an tunnel algorythm test and tunning... 
:)
My goal is to write Game like yoomp for C64 :)

Now when I think about it.. if I already have tunnel moving in rebol.... 
it would be quite easy to add a jumping ball to it.... :)
Will upload something usefull later in the day...

Vladimir, are you in the demo scene?

Cool, I await with baited breath.

Vlad, Good to know that there is other people involved in old computers 
revival.
I'm always coding for MSX computers . 

Last year, with Rebol, i tried to simluate the PSG AY family (sound 
processor of MSX) and  an old game (GALAGA).

I think Rebol is perfect to construct toolsets for that purpose (graphics/maps/patterns/sprites 
editors, asm preprocessor).
(see http://www.rebol.org/search.r?find=guest2&form=yes)

ah... the old good alfa rebcode

yep, i loved it very much

@Henrik: Im into demoscene :) Im one of those retrofreaks.... :) 
I made couple of never released games during 80s and 90s... As a 
matter of fact I never stopped coding for C64... Graphic routines, 
hardware projects, testing new effects.... Its a hobby for life....

@Steeve: I know your work :) I was impressed with galaga :) and I 
agree fully in using rebol as help for coding. I use it often to 
make table generators, and creating include files for c64 assembler.

wooowww, someone who like my demo, i'm flattered :)

BTW, Rebcode is  pretty good for making some pixelbased graphics. 
Cyphre made some interesting demos when it was first prototyped. 
Geomol made a voxel engine.

yeah agreed, but i'm afraid it"s not anymore possible with R3

Rebcode is the history, though, as R3 models does not provide significant 
speed-up, to be worth inclusion (said speed-up is only something 
like 3x normal REBOL code)

not yet at least. we'll see what happens in this area.

BrianH has some other ideas in mind, of how to possibly improve the 
situation though ...

for those things rebcode was limited by SHOW in R2 and lacked some 
better pixel write routines.

We'll have some decent openGl implementation... right? :)

perhaps someday if/when Cyphre comes back :-)

until than here is what can be done in rebol during two coffees... 
:)
http://www.visaprom.com/tunel.r

in my demo (galaga) , actually i was limited by by the framerate 
of show, not by the inner speed of rebcode

vladimir, very cool!

and the sound port implementation was bugy too, as we know

Not bad :) Looking code...

its rough code.... map for level should be made from tiles, and the 
moving should be twice smoother.... than it would be same as on atari....

And it uses atari resolution.... and I did scaling in software... 
each atari pixel is actually 4x4 pixels in image....
Is there a way to scale image using hardware in rebol?

no, but you can smooth image scaling

yes Vlad, your code is clean, i see the inheritance of a good asm 
coder

hehehe :) thanks.... it could be cleaner :)

maybe I didn't need that much parenthesis but thats just to be sure.... 
:)

there are probably optimizations that can be made there.

hmm, i coold try to port your code in R3 if you want

img: make image! 4x4
poke img 1x1 red
poke img 2x2 white
view layout [image img (img/size * 8)]

Just remember, this was just made to find out if  calculations made 
on a napkin in a restaurant were correct :)

This script proved my math skills are still valid and now I need 
to implement them in 6510 asm... :)
Would be nice to see it in R3..... How is vid advancing in R3 ?

it's advancing...
Acutally, it's enough to handle drawings at bitmaps level

no need of Vid for your purpose

why? is there some other way of displaying pictures in R3...?

sure, you have to use gobs, wait a minute i rewrite your code....

ok.... Ill go make coffee.... looks like coding time :)

beer for me, please

probably get rid of FOR. it's a heavy mezzanine.

BTW, there are bugs in image! in R3, so colors might be wrong.

vladimir, GOBs are graphical objects blocks, light weight constructs 
that are the foundations of all graphics in R3.

a FACE in R2 would almost be the equivalent, although faces are more 
complex and heavier.

Another way to make tunnel effects.
do http://anton.wildit.net.au/rebol/demo/rebol-stargate1.0.2.r

I knew about gobs, I just thought you need vid for them.... :)

Vladimir - actually no - gob! is very low level, structure. Demos 
of former alpha, e.g. 1000cows, proved that R3 engine is much faster. 
Sometimes 10-20 times. Whole rendering back-end was switched to AGG 
renderer. So - still not HW accelerated, but decently fast.

Anton, impressive!

In theory, it would be easier to hardware accellerate AGG than the 
old View.

I'll wait to see what will Steeve write and than it will be clearer 
:)