If you're sceptical about Oculus Rift, here's an experiment for you. Download Doom and play it back-to-back with a modern FPS. What you'll probably notice most isn't the low resolution or the weird cardboard-cutout objects, but the absence of freelook. You'll find yourself jarring as you try to look up at ledges or peek down through windows, feeling peculiarly constrained, almost as if you're wearing a neck brace. The Rift is at least as big a difference.
HMDs with accurate head tracking are an absolute revelation, because they truly immerse you in the environment. You don't realise how much your natural vision relies upon your ability to take quick glances at odd angles - a look down at your feet to spot the last step, a peek over your shoulder before you merge into traffic and so on.
The latency would have to be very low though.
If you've been following what John Carmack has been doing with these types of things, that seems to be the conclusion he has come to.
Your solution is certainly simple and cheaper to implement, but isnt anywhere near as effective, immersive, or cool. Eye tracking is defiantly needed to take this to the next level.
I preordered an Oculus rift devkit, and the first thing I'll be doing (after spending hours ooh-ing and ah-ing in whatever 3D demo comes with it, hopefully) will be to hook it up with a kinect.
Option 1: Just an omnidirectional treadmill with kneepad and wrist sensors. This is cool but immersion breaks trying to interact with obstacles or walls.
Option 2: Build different arena like a laser tag arena or paintball arena or a tennis court with obstacles and different types of gun controllers littered around the arena, then have the Occulus overlay a virtual simulation of the arena and different weapons depots, and add kneepad sensors connected to the Occulus so it can simulate motion. This allows you to solve the immersion problem of simulating and experiencing obstacles/walls.
Bonus: Some sort of suit that can use ems to be able to simulate muscle resistance to add weight to virtual collisions. Like this: http://www.cct.lsu.edu/~fharhad/ganbatte/siggraph2007/CD1/co...
I wonder if we will start seeing more people in therapy for PTSD from gaming.
1: Infinite Jest
2: Videgame Addiction was rejected from the next DSM, but I believe that we will see a form of it added within our lifetimes.
3: This has been happening for almost ten years: http://news.bbc.co.uk/2/hi/technology/4137782.stm
Far more interesting was the bit about the rise and fall of video chat, where people became so self-conscious about their appearance they eventually altered or covered them up before returning to audio-only. Kottke brought this up in relation to Facetime[1].
http://kottke.org/10/06/david-foster-wallace-on-iphone-4s-fa...
But I don't think it's all bad. I think it will help with so many things we aren't even foreseeing yet.
Where IIRC a scientist creates a device that can record dreams and his wife becomes totally addicted to the experience and just can't stop playing and re-playing her dreams.
I think it's in Until the end of the world but cannot swear it ; )
Good movie anyway...
And then there's the movie which is a reflection on immersive videogame as the main plot: David Cronenberg's Existenz. Existenz is considered a flop by many, but an underrated movie by quite some people too.
Sometimes filmmakers don't understand large-scale real-world consequences of the plot choices they make.
The absolute creepiest thing I've experienced with this was put the goggles on and have the screens showing the view of a pair of cameras mounted on a telepresence robot in the same room. Then slowly pull the telepresence robot back so that I could see myself sitting there with the goggles on looking around in real time. It literally gave me the shivers.
But creepy out of body experience aside, the challenge then was control. Moving through space with a game controller with full view control can make you feel like you're a quadraplegic in the virtual world. Something that will really be awesome will be these goggles and a Leap Motion controller, so that you gesture around your world. You still don't get to walk (were are those 2D treadmills when you need them? [1]) but its more flexible than a thumbstick and a d-pad.
[1] http://spectrum.ieee.org/automaton/robotics/robotics-softwar...