<span>A system and method for manipulating virtual objects in a virtual environment, for drawing curves and ribbons in the virtual environment, and for selecting and executing commands for creating, deleting, moving, changing, and resizing virtual objects in the virtual environment using intuitive hand gestures and motions.</span>
Have you ever had a friend over that just trashed your place and left...? Well that's what we are basically doing to the enhabitants of our environment!
THE LAST ONE SHOWS body movement and gesture like u humans
2. 1st person
3. Conflict
4. Protagonist
That's all I know
Hope this helps