Moving Around in 2 and 3 Dimensions
Here are some differences between ground-level 3D and top-down 2D environments, and their implications for ease of navigation: The way the shapes of objects change as the player moves around the game environment. In 2D environments, rigid objects retain their projected shape as they change position and orientation due to player motion, while in 3D environments their apparent shape can change significantly. The way the angles between objects change as the player orbits around a particular point or travels along a path 1 , as measured from the camera's perspective. In 3D environments the apparent angles between objects are significantly affected as the player moves around, but remain fixed in 2D views. For these reasons, a 2D view is generally more stable than a 3D view, as it doesn't change quite as radically as the 3D view when the player moves around the game world. Furthermore, since the view in top-down 2D games doesn't usually rotate as it does in 3D, a typical 2D