Splatter Decals [SUBMITTED]

[iReddog]

Thanks for the reply!

I got this response on a similar question from a VFX artist at Epic

If you are using particles, you can mix and match color using InstanceParameters.

You could add particleEvents and drive the color of your existing decals using the event…so you setup an MID for your decal, and modify a color parameter of your decal with particle events.

I you emit red particles, the event in your red particles would modify the color of your decal MID on collision event with a surface…you could change the entire surface, or localize your changes using masks etc. etc.

Scale a normal against the z of vector component to make paint get thicker etc. etc.

Sounds like fun, I hope this helps you out!

I love messing around with UE4 and trying to find the results I want, and I think now I have the resources to give it a shot. So far I was able to mix colors in the content examples (with decals). I found that if I switched them to Stain I believe it was, they could overlap and make appropriate colors.

And no worries on the color picker, the 0-1 space just got me a bit confused but as I scale it I see there are plenty of options in the color spectrum.

Hopefully with some messing around I can get something working.

Here’s a picture of the content examples (Decals level, 1.6). I modified the translucent blend mode to stain, and then applied an opacity of .9 to the master material (red), and made a copy of one of the instances to get yellow. You can see that it mixed the basic Green, Red, Yellow, and Blue decals to get appropriate colors (orange in particular is easier to see, but I think that’s either because of my light or the material on the wall).

Obviously your pack has a lot more going on in terms of functionality over these squares, but hopefully it’s a step in the right direction.