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Material/Fabric that moves accuratly, i.e hanging drapes that move as models pass through it. (Presume this uses bones/key physics points to animate).

Moving water surface, as with the fabric above, but with ripple control, i,e as objects more through the model, waves are created. (I am not talking about graphics that create the illusion, but actually moving the water surface (as seen in the title Prince of Persia for PS2), according to interaction.



these things are soft-body simulations usually done with mass spring systems and not supported by the newton engine or the built in a6 physics engine yet.

but probably some free source code examples for mass spring systems are available for download somewhere and could get used to create an a6 plugin...