How to make REALTIME 3d water physics simulation?

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I know, computers don't like water simulations. It doesn't have to be very realistic, the main thing is that there is this simulation.

Megalomaniak

I don't think computers particularly like or dislike anything. A realtime fluid sim might be a bit too demanding however it probably comes down to just how much performance/frames you want to achieve. I'm sure something can be done to achieve 30 or 60 fps.

Perhaps even just using some form of cellular automata? That would probably fit better a blockier game in the style of minecraft, but perhaps something could be done to mask it somewhat and perhaps better integrate into a more realistic environment too.

Bimbam

Pretty sure most/all games never use 'real' 3D water physics as it's computationally expensive. There are loads of great GDC videos breaking down various approaches, but really depends on what your trying to achieve so don't really know what to suggest to start.

If you're only interested in the simulation and not for a game, SPH could be implemented in C#/GDScript

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@Bimbam said: Pretty sure most/all games never use 'real' 3D water physics as it's computationally expensive. There are loads of great GDC videos breaking down various approaches, but really depends on what your trying to achieve so don't really know what to suggest to start.

If you're only interested in the simulation and not for a game, SPH could be implemented in C#/GDScript

So, I want the water physics in the same way like minecraft, but faster expansion and in lowpoly style.

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@Megalomaniak said: I don't think computers particularly like or dislike anything. A realtime fluid sim might be a bit too demanding however it probably comes down to just how much performance/frames you want to achieve. I'm sure something can be done to achieve 30 or 60 fps.

Perhaps even just using some form of cellular automata? That would probably fit better a blockier game in the style of minecraft, but perhaps something could be done to mask it somewhat and perhaps better integrate into a more realistic environment too.

How to make this "cellular automata" in 3D?

Megalomaniak

I can't think of any examples implementing it in godot, but it should be doable. Might start with just googling for 3d cellular automata perhaps. Here's the first thing that came up in a search for me: https://softologyblog.wordpress.com/2019/12/28/3d-cellular-automata-3/

actually better place to start might be with just figuring out cellular automata in 1D or 2D first perhaps.

edit: actually i do have a vague memory of someone doing CA in 2D in godot, lemme make a quick search here... https://godotengine.org/asset-library/asset/819