HelIo, I wonder if it is possible to play the Niagara System from behind? I am using Niagara UI Renderer plugin. I would like to play the system once and then reverse it.
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Hi,
I don’t think there’s a good way of just “reversing” the Niagara particle system. You can mark your particle systems to be deterministic, which will result in them looking the same every time, and you could update their age afterwards manually to get a reverse effect, but I wouldn’t recommend this. All the calculations for particles are one way only, you can’t reverse them. Which means that if you try to go in reverse, it restimulates the entire particle system from frame 0 to your target frame. This can become really expensive pretty quickly.
Instead I would recommend faking the reverse effect in the particle system itself. For example if you have simple radial burst in the beginning, you can just apply an attraction force with some dampening. Of course this is a simple example, and it will be more difficult based on your particle system. It may be even impossible in some cases, but this is the route I would try to solve this problem.
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