If you’re familiar with animation, Smear Frames may ring a bell.
To put it simply, the faster an object moves the more distorted it will look.
This concept applies to our Smoke animations as well. But since Smokes lack detail (especially pixel-art smoke), we must compensate by getting the length & timing spot on.
I generally like to make the climax quite lengthy (60-80% of the total distance traveled). Each frame afterwards is dissipated by reducing its length relative to its speed. I personally enjoy reducing its length by 1/2 every frame.
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