AMIGA-Demo "Rebels: Switchback"

[the1marauder2]

The rebels always had some great stuff. :)

[samson06120]

ACHTUNG! Neuere Version in meinen Videos verfügbar!

Attention! Newer version available in my videos!

[Sahtzor]

demos like this make me wanna go to basement and look for my old'n'dusted A500

[d0dge25]

@Sahtzor ... but it won't work on the good old 500. You need at least an A1200 because of the AGA chipset and most likely also specialised code for the 68020 cpu.

[kalikone]

Hello, i remember of this demo which was released at a small but impressive (my 1st one) demoparty near Karlsruhe / west "coast" of Germany. I just missed the name (=> Doom'sDay). But it was a fabulous back over 1994.

I will always remember this fabulous experience of watching this on bigscreen. People present were so amazed of that!

[BLOODYCLQ]

i still remember the day uploaded some of these grafix to Zulu also the day downloaded this 2 disks demo, back in 1994 this demo kicked ass, Rebels Rules,

[ortega24024]

Nice work. Check out our Amiga A500 stuff: animated Mandelbrot zoom, 12 bit colour sprite rotation and enlargement, 2112 dot rotating spheroid (Phenomena by Enigma only had 800).

[thomastvivlarenDOTse]

@ortega24024 Will have a look. I did 1164 dots (mirrored à la PHA) on the Atari ST applying self modifying code on the matrix calculations and a faster plot. Basically the same algorithm as in Enigma however more clever... Another group member however erased that one by far in our Amiga release for Assembly managing (if my mind is not failing me) about 3000 dots. If I am not completely wrong they were not mirrored either... Can't get hold of that demo now so anyone who has got it please shout!

[ortega24024]

@thomastvivlarenDOTse Well done for getting 1164! I'd love to see your code to compare it to ours. A while ago another youtuber asked to see our 68000m/c for our sphere, so I sent it to him. I'll keep an eye out for the 3000ish one (but I bet it's only on an A1200 or above, our 1 is 4 the A500!) There's a load of strange vids on my youtube (of varying quality and content). For the Amiga stuff you want "12 bit colour sprite rotation and..." and "Some of (mainly Nick's) old..."

[thomastvivlarenDOTse]

@ortega24024 Thanks! Still far from the 2000 that you succeeded in. From the back of the mind (it's been almost 20 years) the matrix calculations had been reduced to one move followed by 2 adds for each rotation. I think PHA used this kind of addressing 0(a0, d0.w), d1. That can be optimized to offset(a0), d1 which is a faster type of addressing. The way to go about that is to use self modifying code which replaces the offset of the instruction.

[thomastvivlarenDOTse]

@ortega24024 The other optimization made use of setting the screen address in a way that the middle of the screen - the origo or 0 on the Y axis - had the lower word containing 0, i.e. $70000. That enabled faster addressing of the Y-position. Hope it makes sense. Will have to see if I can find the sources some day.

[thomastvivlarenDOTse]

@ortega24024 The demo we competed with for the Assembly compo was called Ill Flower. Our group-name was Scum of the Earth (YT does not allow linking to Pouet unfortunately so you will have to search for it there).

[UKShiner]

I love this demo!!!

The music is fantastic too!

Rox!!! <3

[plasmaarmelund]

Music is a Jogeir Liljedahl ripoff.

[3ARTESS]

Nope! music composed by Chromag!

[plasmaarmelund]

I know, but he ripped off JL's "Love" theme. Do a search for "virtual dreams love" and listen.

[3ARTESS]

well, some parts are similar.... but both tunes are great. CU and AMIGA RULES :)

Bartesek/Mystic

[c3dr1cb]

then this music is very awesome !!

[jci10]

The 3D rollercoaster at the end is beyond belief for ANY machine back in 1994 (even $30,000 SGI machines), let alone a $400 Amiga1200.

[cv643d]

Too bad it is pre-rendered and not realtime then.

[nicolunacba]

yeah, that's true. But I see in anothers amiga demo a realtime rollercaster. IDK now.

[someman7]

plus, if it's an animation, the file must've been huge.

[cv643d]

Its an animation, I have watched this demo on a real machine, it looks to 3D to be able to run on a stock 020 A1200.

Size does not mean anything. Frontier 2 fit one floppy (!).

[someman7]

You don't understand.

[harleykman]

Why does that matter? I challenge you to find a 25 megahertz Mac or IBM PC that could do this demo without slowdown.

Even now my poor Mac can't display the video at proper speed, and it's running 80 times faster than the Amiga 1200 did!

[cv643d]

The demo scene was built on realtime effects, I can understand someone who have no experience in euro-scene understand this.

My old 486 25Mhz could play video full screen, it is nothing special, just resize video to 100x50 and the size go down.

If this impresses you, you would probably faint when I told you the tings I could do with my A4000 :)

[jci10]

1-bit video full screen with crappy 1-channel monosound is NOT FULL SCREEN VIDEO!!

[bcrscahh198987]

You do realize that demos are particularly optimized for the computers they were made for?

In this case, the Amiga.

There's certain technical discrepancies that makes Mac or IBM PCs run it at an UNOPTIMIZED pace.

[BurtWilson1]

I think people will view the Amiga over time, in the same way we view a classic car (e.g. Mark 1 VW Golf GTI). The Amiga is a classic computer, and will always be loved ;]

[kultstate]

exactly :)

[BurtWilson1]

What great music.

[Truthreexamine]

I would love to write music for the demoscene but I have no idea how! Great demo!

[ar15expert]

Heh, you're at least 10 years too late.

[c3dr1cb]

20 years :)

[ar15expert]

nah, 1998 was close enough to the tail end, as far as I'm concerned. I know people still make demos but it's not the same anymore, is it?

[RockStarAteMyHamster]

huh.. they bought all their source codes from virtual dreams. the effects are exactly the same, some colors are changed. :D

check for example, full moon or love by virtual dreams ;)

[exciter12]

nothing was bought from virtual dreams. they just inspired Zulu & Grey...

[RockStarAteMyHamster]

hehe.. ok. just remembering an old article in raw or some diskmag that claimed they bought all the sources from VD. true or not fun rumour ;)

[exciter12]

yeah, spreading rumours like they were facts rules, or what? ;)

[RockStarAteMyHamster]

nah.. thought it's so old thing that we all are remembering it with warmth, stolen or not. and in this case NOT STOLEN! :)

anyways, switchback is great demo, I especially enjoyed the great graphics by eracore & teevaan. Rebels used to be a very cool group! haven't been following if they still are :) sorry if I offended anybody, didn't mean to.

greetings to old scene pals, no fuckings this time ;)

- adam/dcs

[exciter12]

No problem. I was a memebrr of both Dual Crew and DCS. Great time. Keep the spirit alive! ;)

Exciter

[panrolpho]

Amiga pany!

[edd8k2]

"fractal dots" roxxx! (02:10)

[niobyte]

A classic AGA Amiga demo from 1994 by Rebels. It ranked 1st place at the Doomsday Party. Nice code by: Grey & Zulu. Good Music by: Chromag & Vocal. Nice Visuals by: Demon,Eracore,Grey,Kris,Slime,­Srl,Teevaan. Raytracing by: Excess.

[panti77]

Hmm.. thought it was released at the party 95 or something, (was at the party94-96), guess my memory plays tricks on me.. was a while ago afterall.. you're probably correct.

[Kuja22]

i dont get this, wtf is this all about?

[chootastic]

this kind of stuff originally came from hacking, wehre someone would hack into a game, and tag it somewhere. The tags becamme more and more sophisticated, untill they becamme more important than the game itself. It becamme a demonstration of programming tallent. This is where viral videos come from.

[chootastic]

a quick post script -

There are still conventions held where the challenge is to produce something like this under an old direct x version, but it has to last about 3 minuites and fit on a 1.44 floppy

[panti77]

Chromag at his best.. love the tune.

[DjGaz]

Prodigy - Voodoo People.

Nice mix.

[amigaflame]

AMIGA rulez

[arteghem]

Great post! I gave up coding just when AGA era started and never got the chance to see this one.. the rollercoaster is definitely pre-calculated : loads from a second disk AND mostly loops... 2 clues that can't lie :)

Anyway, great job from Rebels. I remember them as pretty talented people.

[thepts]

AGA demo =) this looks very old/nostalgic but was actually a "newer" demo from after the AGA era.. right before Amiga died. So not so very 1337 back then ;p I remember the rollercoaster scene but yes it was a pregenerated copper-anim.. not to complain! It was nice to see this.

[Baronation]

I forgot how amazing that Rollorcoaster scene was.

[Jodezza]

Agreed, I always thought the roller coaster bit was fasntastic. realtime or not :-) Amiga RULEZ!

[llary]

Man, talk about nostalgia.. this is what got me into the demoscene all those years back. Awesome music and gotta love the cheeky coaster section!