Source Code for Planet Jazz - Planet Disco Balls 64KB Intro (Revision 2021)

[Antiriad_UK]

Here is the source code for our Revision 2021 64KB intro. I'll tidy the readme up at some point this week but all the main stuff is in the Projects\PJZ2 folder.

Source: https://github.com/jonathanbennett73...et-disco-balls
Prod: https://www.pouet.net/prod.php?which=88532

Thanks to these people for the tools and scripts used
in this demo. It wouldn't have been possible without
you!

Virgill/Alcatraz - Amigaklang (and convincing me to release at Revision)
Hannibal/Lemon. - KingCon
Blueberry/Loonies - Shrinkler
Soundy/The Deadliners - Gradient Master
Frank Wille - VASM 68k
prb28 - ASM extension for VSCode
Toni Wilen - WinUAE

Plus thanks to the denizens here who help with my questions (in no order and sorry if missed any):
ross, Dan, a/b, roondar, hooverphonique, StringRay, morbid, mcgeezer, alpine9000, Galahad, Photon, meynaf, leonard

[drHirudo]

Hi mate,
Thanks for the source.

Your Source link has one r at the end too much and leads to 404 page.

[tolkien]

https://github.com/jonathanbennett73...et-disco-balls

Think correct link is this.

Thanks for the source!

[phx]

Nice! Well structured and readable source.

[pink^abyss]

Originally Posted by Antiriad_UK

Here is the source code for our Revision 2021 64KB intro. I'll tidy the readme up at some point this week but all the main stuff is in the Projects\PJZ2 folder.

Source: https://github.com/jonathanbennett73...t-disco-ballsr
Prod: https://www.pouet.net/prod.php?which=88532

Thanks to these people for the tools and scripts used
in this demo. It wouldn't have been possible without
you!

Virgill/Alcatraz - Amigaklang (and convincing me to release at Revision)
Hannibal/Lemon. - KingCon
Blueberry/Loonies - Shrinkler
Soundy/The Deadliners - Gradient Master
Frank Wille - VASM 68k
prb28 - ASM extension for VSCode
Toni Wilen - WinUAE

Plus thanks to the denizens here who help with my questions (in no order and sorry if missed any):
ross, Dan, a/b, roondar, hooverphonique, StringRay, morbid, mcgeezer, alpine9000, Galahad, Photon, meynaf, leonard

I grabbed the Copy2Adf from your repository Thanks.

[ross]

Nice intro, best in the compo.

[Galahad/FLT]

Really like this, nice new interpretation of the old interference effect, just everything about it smacks of quality.

Thanks for the greet, just a really, really nice production

[a/b]

Really like the line vectors and shade bobs parts, nice colors too.

[4pLaY]

Congrats Antiriad! It was a very enjoyable production from start to finish, which will most likely win the intro compo.

[mcgeezer]

Was an absolute clear winner mate as soon as I seen it.

Really well done and super pleased you did this.

Geezer

[jotd]

very cool

[Antiriad_UK]

Updated the readme with assembling notes. You can either assemble the full thing or an individual part which makes stitching multiple parts together much easier. It it currently configured to run in an AROS env so I don't get into trouble for shipping ROMs

All the different parts are in the Projects\PJZ2\<partname> folder such as Projects\PJZ2\Credits. For some effects there will be a "notes.txt" in the folder with high level notes I did when coding or where I stole the idea from

Other stuff maybe useful for coders :

Vector math notes - Dumbed down vector/light sourcing notes I made for myself from various sources

Intro Framework/glue - All the functions for system startup/music syncing/transitions/intro timing/memory allocation. I used something Pink mentioned for memory where all the memory is allocated at startup and then each effect switches which end of the buffer they allocate from so that you can overlap effects and save total memory needed. The module was 280KB chip mem so had to be frugal

Prototyping functions - Not used in the final intro but these were "safe" functions for solid/filled line drawing, BOB copy/OR/Cookie, Dot plot. I used these functions in the initial effects rather than spending time trying to optimize these functions too early. Once the routine was looking OK I changed the functions into more specific/faster versions (not saving registers, unrolling, etc).

OCS Forever

[ross]

Your sources and notes are very well done!
I would like to say the same about mine...

[hooverphonique]

Lovely little intro - is the light-sourced vector a HAM-fill trick?

And thanks for the shout-out :-)

[Antiriad_UK]

Originally Posted by hooverphonique

Lovely little intro - is the light-sourced vector a HAM-fill trick?

And thanks for the shout-out :-)

No problem

No it's 4 bpl (for enough unique colors for 20 sided shape) and no real trickery (well screen is 224x224 to save dma) it was on the ragged edge of a frame. And sprite priority for the lights.

[alpine9000]

Fantastic work. I found this to be a really well balanced demo that kept my interest throughout. Best 64k I’ve seen in a while! Congrats!!

[WayneK]

Thanks for releasing the source, and bundling all the tools/your notes along with it in one place.
Watching the stream (Amiga intro) this was the clear winner by some distance, the multi-lightsource vector and super-slick sine/interference effect especially

[defor]

Thank you for this OCS pleasure :-) Clear winner for me.
Also thank you for sharing. I promise your code will be properly re-used ;-)

[Antiriad_UK]

Originally Posted by WayneK

Thanks for releasing the source, and bundling all the tools/your notes along with it in one place.
Watching the stream (Amiga intro) this was the clear winner by some distance, the multi-lightsource vector and super-slick sine/interference effect especially

Thanks. The vector was the reason for doing the intro as wanted to do something like that for ages. But by the end my favourite part was actually the end credits with the disco balls. Just was really pleased with getting 8 sprites to have 32 lots of 32x32px sprites on screen with some multiplexing. Not done much with sprites before and it was fun.