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[sphere primitive]

#1

Stunts Reverse Engineering / Distorted explosion sprites in...

Last post by Foxpup - Today at 12:42:05 AM

While working on a new car, I encountered the explosion sprite bug described but never solved in this thread and decided to investigate. After much testing, I am confident the sphere primitive is the culprit. A car model will exhibit the bug if and only if it has at least one sphere primitive; the number, size, location, and orientation of the sphere(s) seems to make no difference. Even a zero-size sphere at the model's origin will produce the bug. Early theories that the bug is related to the size of the car model are unfounded and were probably influenced by the fact that the most common use of sphere primitives is to represent a driver's helmet in small open-cockpit race cars, and also by the fact that, under normal circumstances, the model's bounding box determines the origin and scale of the explosion sprite.

My theory is that the function that determines a model's bounding box in screen space has a bug when it comes to sphere primitives, which was never caught during testing because none of the original car1/car2 models have spheres, nor do the car0 models ever explode. (Come to think of it, I'm pretty sure Indy's car0 is the only model in the entire game to use the sphere primitive, so it wouldn't surprise me if sphere rendering was added to the game at the last minute without any real testing at all.)

#2

Season's Chat - CCC / CCC03R2 - Sweden-3

Last post by Duplode - Yesterday at 07:00:51 PM

The second round of the Christmas Special is open at https://ccc.mystunts.net/ ! This week, we'll race on a retro track: Sweden-3, from Krys TOFF's WRC Stunts. The deadline is next Saturday, 2026-01-03 23:59:59 UTC, and the cars for this round are:

• @alanrotoi 's Ford Sierra RS Cosworth
• Ryoma's Lancia Delta S4
• Alan's Land Rover Defender 90
• @CTG and Ryoma's Subaru Impreza WRC

You can get the cars from the site, or from this post. Specially for the Delta S4 I recommend re-downloading the car from the new pack, as the current version is not compatible with the one used in CCC back in 2022.

There are no tunnel checkpoints in this track, and the must-finish-under-the-banner rule will not be applied in this race. As usual in CCC, penalty time is not allowed; other than that, any line is okay.

#3

Competition 2026 / Re: Guest track 2026

Last post by Duplode - Yesterday at 06:14:51 PM

I can switch if it's a more favorable month for @Argammon

Thanks, I will gladly switch with you!

All right, calendar updated -- thanks @Erik Barros , and also thanks @HerrNove for the earlier offer!

#4

Season's Chat - CCC / Re: CCC03R1 - Rally Square

Last post by Duplode - Yesterday at 06:11:16 PM

Great job from the admins and track designers. I have only one regret, Marlboro R5 is meant to excel for ice skating, and it was not ready soon enough.

Soon™ Preview video

Yeah, I was thinking about it while picking cars for the final rounds! Anyway, we'll have other opportunities 

#5

Season's Chat - CCC / Re: CCC03R1 - Rally Square

Last post by Alain il professore - Yesterday at 06:02:47 PM

Hello my Stunts friends,

Thank you Duplode and thank you Spoonboy I very much liked your helicopter run. Very spectacular! Thanks to the car designers, their hard work brought this great race to life!

Congratulations to the winner of the first leg : Victor Narl  .

Great job from the admins and track designers. I have only one regret, Marlboro R5 is meant to excel for ice skating, and it was not ready soon enough.

Soon™ Preview video

[rabbit hole]

#6

Competition 2025 / Re: ZCT293 - Symmetry

Last post by Argammon - Yesterday at 04:27:29 PM

I won't go into the rabbit hole of continuing this discussion with you. We do not get along, and I do not enjoy spending my time with you.

To be honest, from my point of view neither of you tries to get along with the other. "Are we back in 2003?" and "Where is the flamewar?" are both escalating remarks, guaranteed to rile up the other. You seem to have a beef that goes way back. Reminds me of when I meet middle-school mates and we all fall in the same patterns we use to follow as teens.

Escalating situations are a thing in life, but not a necessity. As an alternative you could take to your favourite DMs or chat and attempt to understand how, from best intentions, you ended up offending each other. Language? Expectations? Perceived actions? It could be well meaning communication without an additional public that could bring pride into the mix, never a good ingredient.

You are both Stunts giants, you can do this 👍

To clarify, it was not my intention to insinuate that the tension between the two of us is all his fault.

I just think that it is for the best if he and I stop communicating for a while. There is nothing good coming out of it when we do. We can do what you suggest when the dust has settled -- likely when I have been in the Stunts Valhalla for a while.

#7

Competition 2026 / Re: Guest track 2026

Last post by Argammon - Yesterday at 04:08:27 PM

Argammon would like to swap his slot for a later date if possible -- let us know if you can help!

I can switch if it's a more favorable month for @Argammon

Thanks, I will gladly switch with you!

#8

Team Zone / Re: Teams for 2026

Last post by alanrotoi - Yesterday at 02:26:08 PM

I must add Renato Biker is our guest consultant for the team.

Oooohh!! That's hot news!!!

#9

Competition 2026 / Re: Guest track 2026

Last post by Erik Barros - Yesterday at 01:44:51 PM

Argammon would like to swap his slot for a later date if possible -- let us know if you can help!

I can switch if it's a more favorable month for @Argammon

[rabbit hole]

#10

Competition 2025 / Re: ZCT293 - Symmetry

Last post by dreadnaut - Yesterday at 01:10:34 PM

I won't go into the rabbit hole of continuing this discussion with you. We do not get along, and I do not enjoy spending my time with you.

To be honest, from my point of view neither of you tries to get along with the other. "Are we back in 2003?" and "Where is the flamewar?" are both escalating remarks, guaranteed to rile up the other. You seem to have a beef that goes way back. Reminds me of when I meet middle-school mates and we all fall in the same patterns we use to follow as teens.

Escalating situations are a thing in life, but not a necessity. As an alternative you could take to your favourite DMs or chat and attempt to understand how, from best intentions, you ended up offending each other. Language? Expectations? Perceived actions? It could be well meaning communication without an additional public that could bring pride into the mix, never a good ingredient.

You are both Stunts giants, you can do this 👍