In a typical 2D game with a top-down perspective or similar, it is common to create some sort of shadow-like visibility effect. This is demonstrated here: https://ncase.me/sight-and-light/ . The effect is useful in the game play to hide certain parts of the world/level to the player. It can also easily be used for multiple "agents", so that the player only sees what his/hers agents sees.
I have a hard time figuring out how this would look in 3D, to give a similar effect. To simplify, let's assume that the game has more or less a top-down camera view or a camera view that is common in most management type games.
- Should you still draw the objects outside the field? Should it just be black?
- Are there examples of how other 3D games does this?
