Since actors can be active in 3x3 grid around the player, we need to
first load all objects in a 5x5 grid around the player.
Split load and unloading in 2 phases. Add an mInactiveCells set into the
scene, which contains all cells inside the aforementioned 5x5 grid.
These cells contains only heightfields and non-animated physics objects.
Animated objects are tied to the scene graph, which doesn't exists yet
in these cells, so we skip them.
Corresponding recast mesh tiles can be updated but navmesh tiles may never
appear for them. Report back zero navmesh version to allow oscillating recast
objects detection to work. This version is always less than any generated
navmesh tile version so any report for generated navmesh will override it.
If zero navmesh version is reported after recast mesh tile got report about
generated navmesh tile it is a no-op since generated version is always greater
than zero.
To fix all possible situations when active message box overlaps with loading
screen progress.
The only used condition to center loading screen progress by height is
number of message boxes > 0. No need to pass it through interface.
LoadingScreen can check it inside setLabel function.
Before this change LightBuffer copy constructor copied only mData pointer into
a new object. Then memcpy was applied to an overlapping source and destination
that is UB.
Replace configureLayout function by a special constructor. That copies all
mData values and a pointer to a buffer object into a newly allocated object.
The idea is to avoid std::map lookup for each CellRef. Instead generate a
sequence of added and removed RefNums into a vector then order them by RefNum
using a stable sort that preserves relative order of elements with the same
RefNum. RefIDs are stored in a different vector to avoid std::string move ctor
calls when swapping elements while sorting. Reversed iteration over added and
removed RefNums for each unique RefNum is an equivalent to what map-based
algorithm produces. The main benefit from sorting a vector is a data locality
that means less cache misses for each access. Reduces ESMStore::countRecords
perf cycles by 25%.
When game exit is requests when initial loading screen is active LightManager
can be destructed in the main thread before LightManagerStateAttribute::apply
is completed by different thread. Given that it uses raw pointer at some point
it becomes dangling because object is destructed this leads to UB and eventual
SIGSEGV.
