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Old 04 April 2021, 12:19   #1
Antiriad_UK
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Source Code for Planet Jazz - Planet Disco Balls 64KB Intro (Revision 2021)

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

Last edited by Antiriad_UK; 04 April 2021 at 15:13. Reason: Fixed link :)
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Old 04 April 2021, 13:00   #2
drHirudo
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Hi mate,
Thanks for the source.

Your Source link has one r at the end too much and leads to 404 page.
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Old 04 April 2021, 13:09   #3
tolkien
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https://github.com/jonathanbennett73...et-disco-balls

Think correct link is this.

Thanks for the source!
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Old 04 April 2021, 13:25   #4
phx
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Nice! Well structured and readable source.
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Old 04 April 2021, 15:08   #5
pink^abyss
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Quote:
Originally Posted by Antiriad_UK View Post
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.
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Old 04 April 2021, 15:44   #6
ross
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Nice intro, best in the compo.
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Old 04 April 2021, 16:45   #7
Galahad/FLT
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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
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Old 04 April 2021, 22:12   #8
a/b
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Really like the line vectors and shade bobs parts, nice colors too.
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Old 04 April 2021, 23:29   #9
4pLaY
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Congrats Antiriad! It was a very enjoyable production from start to finish, which will most likely win the intro compo.
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Old 05 April 2021, 00:15   #10
mcgeezer
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Was an absolute clear winner mate as soon as I seen it.

Really well done and super pleased you did this.

Geezer
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Old 05 April 2021, 09:49   #11
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very cool
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Old 05 April 2021, 11:50   #12
Antiriad_UK
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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).

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Old 05 April 2021, 12:21   #13
ross
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Your sources and notes are very well done!
I would like to say the same about mine...
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Old 05 April 2021, 13:22   #14
hooverphonique
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Lovely little intro - is the light-sourced vector a HAM-fill trick?

And thanks for the shout-out :-)
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Old 05 April 2021, 13:25   #15
Antiriad_UK
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Quote:
Originally Posted by hooverphonique View Post
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.
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Old 06 April 2021, 00:57   #16
alpine9000
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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!!
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Old 06 April 2021, 16:02   #17
WayneK
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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
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Old 06 April 2021, 21:58   #18
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Thank you for this OCS pleasure :-) Clear winner for me.
Also thank you for sharing. I promise your code will be properly re-used ;-)
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Old 07 April 2021, 18:46   #19
Antiriad_UK
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Quote:
Originally Posted by WayneK View Post
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.
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