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forum topic indicator Invisible Particles indoors
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guest_Robbo
Guest
Quote
2026-04-09 04:40:13

A new and very simple but great addition to hide particles within any boxed area using its bounding box:

Particle System - new Properties:

BoxedAlpha - as true/false
BoxedAlphaName - input name of any node
BoxedAlphaDebug - some debug info on boxed alpha system

Works very well actually for both DirectX and OpenGL.

The DirectX version also allows cross fading first 2 Textures using "Param2" (0-1)

just uploaded final adjustment to Itchio now: download here:
https://robo25.itch.io/coppercube-apis-version-2

YT video here: https://youtu.be/Ef83Oh4NX9E

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guest_Robbo
Guest
Quote
2026-04-09 04:52:18

Made some adjustments to "Alpha" property also:

Any node properties as "Alpha" have been changed to "Transparency" to make it clearer when changing the alpha value what it actually does - ie making it more opaque or more tranparent. Now it should be much clearer and to keep things consitent all "Transparent" adjustments are betwen (0-1) - a zero in Param1 and Param2 means adjustments are off by default - same with 'Transparency'.

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Monks
Guest
Quote
2026-04-09 09:54:16

Thanks for your immense contributions to coppercube, bro

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guest_Guru
Guest
Quote
2026-04-09 11:05:04

Hi there great stuff Robbo, Please check the thread regarding the Challenge you posted. Are you willing to pay the prize money to other dev's as Paypal is not working in my country atm.

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guest_Robbo
Guest
Quote
2026-04-09 14:06:27

Cheers guys - forgot to mention when using FadeOut affector that it also now fades in the particles over a 1000ms time so looks a lot better than just appearing suddenly.

If you need fade out but not fade in let me know and can adjust it for a new property that ca be changed as needed.

Sure Guru - didnt realise you had replied back so thats fine.

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guest_Guru
Guest
Quote
2026-04-09 18:29:12

Great, I would like you to donate it to either JIC or OkeOke. I don't know their exact Paypal id but maybe you can send it via the itch.io by donating to them by purchasing their free stuff or paid one.

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guest_Robbo
Guest
Quote
2026-04-11 01:23:40

Ok, will look for their itchio account and get back to you..

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guest_Robbo
Guest
Quote
2026-04-11 03:14:25

All of 'OkeOke' assets are totally free - no option to give donation so gave it to JIC just now - $10 AUD.

Cheers.

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guest_Guru
Guest
Quote
2026-04-12 07:06:28

Great, and thank you for all your contribution to this community. We need more of these tournaments challenges and game jam I think.

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shadynl
Registered User
Quote
2026-04-12 22:41:55

Thats exactly how i do it in my game.
switching particles from visible to invisible and vice versa doens work very well in every situation, so i just switch to transparent materials to keep the particle flow constant:)

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guest_Robbo
Guest
Quote
2026-04-13 01:29:26

Yeah, I pretty sure I will replace my dedicated wind Action to use this newer and simpler method as wind if very transparent will look good like that.
I wont use it for when I need particle impacts to either the player or the ground around the player - but for wind I think will work very well and more performant than my previous method.

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gazzauk
Registered User
Quote
2026-04-14 19:00:08

Thanks for the update!


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