Demonstrates netfox's visibility filtering feature.
The level is split into two rooms, with a door connecting them in the middle. While the hosting player sees everyone all the time, other players only receive updates from players that they have a clear line of sight to. Players that are invisible become transparent.
Note that this example doesn't try to be a full-fledged solution, but a small demonstration of capability. This example does not provide a production-ready solution.
Another limitation is that players might have line of sight to a hidden player with their last known position, but not with their actual one. This means that a player might fade in, but still not receive updates.