* The space bubble around a player's avatar is now visualized. When another avatar enters a player's bubble, The bubble visualization will appear, a soft tone will play, and the "Bubble" HUD button will flash.
* The space bubble radius setting has been removed. Space bubble size now scales based on avatar scale.
* Space bubble collision detection is now more accurate and reliable.
* CTRL + N toggles the bubble.
* The "Bubble" HUD button has been moved to the proper location.
Removed AvatarClientData::checkAndSetHasReceivedFirstPackets boolean.
This is handled by the AvatarClientData::checkAndSetHasReceivedFirstPacketsFrom
set.
This should fix the issue where a persons avatar was occasionally not visible to others
for a long period of time. This was due to several factors:
1) When a new avatar was added to the simulation that identity packet was not broadcast to
other avatars on the server. This would rely on random logic to send the identity eventually.
This is fixed in this PR, by sending identity packets to all other clients when a new clients
arrive.
2) The random identity logic was not being executed if the sequence number check caused an update
to be skipped. This means the probability of sending a random packet was reduced significantly,
especially for clients that were loading geometry on entry. This was fixed by doing the random
check before sequence number check.
3) The 1/300 probably used in the check was too low, this was only a 63% chance of sending a identity
packet within 5 seconds. This was fixed by changing the probability to 1/187, which is a 80% chance
to send an identity packet within 5 seconds.
4) The randFloat() implementation slightly reduced the identity packet probability due to quantization errors.
This has been replaced by a C++ std random number generator.
