Dark particles

[carlhihat]

Hello! I just recently found three-nebula and nebula.exe, and I'm very impressed! :D

I'm currently using two emitters to simulate tire smoke and tire tracks behind a player controlled car. The smoke already looks great, but I'm having some issues with the tire tracks which I can't make a dark color without them not showing.

Is it possible to emit dark particle sprites, if so: how? :)

[rohan-deshpande]

Hi, thanks for using the library!

Can I ask you to clarify what you mean here

I'm having some issues with the tire tracks which I can't make a dark color without them not showing

I am not really following, perhaps if you've got a demo I can look at?

[carlhihat]

Sorry for the late reply.. But I encountered the same issue again for a different project, and I remembered that I had asked the question once already!

I hope this gif captured in the desktop app explains what I mean by trying to emit black/dark particles

[QuisMagni]

Hi, i have the same problem. If i do not use the color behavior at all, the particles will be red and the color behavior is not doing anything for dark colors.

I think it is because the brightness value of a texture pixel is used for the opacity value. Is there anything i can do to avoid that behavior?

[QuisMagni]

After digging into the source code i came up the the following solution:

{ "type": "BodySprite", "properties": { "texture": "./img/textures/smoke.png", "isEnabled": true, "materialProperties": { "blending": "NormalBlending" } } },

For the behaviour:

{ "type": "Color", "properties": { "colorA": "#ffffff", "colorB": "#DDDDDD", "life": null, "easing": "easeOutCubic" } },