i believe moving solids are perfectly possible.
as OP said, they would be clumped together, and the added weight of each particle per clump combined would dictate how it would behave as a whole.
the particles could go up and down left or right, or diagonal ONE pixel of element at a time, but sped up, would look like movement.
im only offering a perspective that may make the idea work easier and simply put, better.
i don't know how to code, but im sure it wouldn't be far too different than spng, except a bit more complex.
why so negative?
im sorry if i offended you, i have seen how sponge moves, and i have seen how sand moves.
i believe, with SOME effort on a good coders part, moving objects (lumps of materials) can move, i didn't say that it had to rotate at ALL, as that would be much more difficult.
yea well how does gel stick to stuff?
just make that stronger.
hi also