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I'm trying to replicate the flickering engine exhaust animation in this SketchFab model. SketchFab doesn't support particle systems, so the animation must be a simple bone animation.
Can someone help me understand how to achieve such an effect?
My best guess is animated opacity, but I don’t know how to replicate it. My final goal is to use it in a Unity 5 mobile game.
They seem to be approximating that using partially transparent objects moving in and out of the engine.
Quick mock-up, slowed down:
The images attached to the moving bones just look like this:
