I assume the "digital" in your question refers to an image on a computer, for instance, and that the image is governed by programs that fit the human experience. I also assume your usage of "human" is after the fact of us having been in a physical, human body.
All things being relative, we would feel human and act human, limited only by the thoroughness of the "program" used. As 3-dimensional illusions can be programmed, and also the interaction of two solid forms can be duplicated in simulations, then we will appear to exist in a 3-dimensional world. If pain can be programmed, we will actually feel pain.
The reason I think this way, is because I believe matter is an illusion, or mostly an illusion, as scientists still haven't been able to determine the smallest particle, but have, instead, found a lot of empty space within atoms.
I think pain is an illusion, because sometimes when I press on a tender area, I feel a sharp jab elsewhere in my body.