Currently OpenSpades doesnt send the extended version info which contains
some useful info to the server even when being told that it wants it.
This commit adds sending of the packet so servers will receive such info when
they ask for it.
Improves the smoothness of non-local player movement in a server that
sends ten WorldUpdate packages for each second (i.e., 10 updates per
second).
I wouldn't dare to relax the bound further since this technique is
extremely susceptible to jitter. The server sending WorldUpdate packets
with `PACKET_FLAG_UNSEQUENCED` isn't exactly helping since that
introduces discontinuity into the received position stream, and the
denominator lower bound is the only thing that keeps the estimation from
exploding. (The packets should really be unreliable + sequenced.)
This commit updates the enet version from 2013 !!! to the latest commit (74cea7abf52ddd355146aeb0a4077d2b95368122)
Since 2013 there have been MANY improvements to the library
and we should absolutely use them since it can improve the gameplay.
This commit completely disables any sign of recoil if
the packet is coming from a player that is not local
player.
We want to apply recoil to local player weapon
but we do not want to apply it to others as
we just want to display what was given to us
(Their client already adds recoil. If not they
are cheating)
Volumetric Fog Level 2
> This PR adds a new volumetric fog implementation, which can be selected by `r_fogShadow 2`.
>
> * The new implementation calculates the fog density in the same way as the original client does (#409).
>
> * The influence factors of shadow casters are weighted according to their distances to the camera. Shadows don't "pop up" like they do in the Level 1 implementation.
>
> * It's significantly more demanding compared to the Level 1 implementation but not as much as current-gen games.
>
> * It supports global illumination. (The non-GI path is unimplemented, so it'll fall back to Level 1 if GI is disabled.)
>
> * Being implemented by naive ray marching, its code is much simpler compared to the Level 1 one.
