> I'm still waiting to see a water system where the ripples reflect off
> obsticles in the water. I mean, hell, it can't be *that* hard to fake
> such an effect, even if solving the wave equation for real is too
> expensive...

I think there was a boat racing game recently that did this (the boats 
affected and got effected by the waves).  Simulating the wave equation 
(or a good approximation of it) is quite easy to do now on the GPU 
thanks to being able to use texture lookups in a vertex shader.  Having 
it interact with other objects seems a simple case of having an 
additional 2D texture to show where objects are, and then using that as 
you're solving the wave equation.

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