Use LRU cache for ESMReaders. When cache capacity is reached close least
recently used ESMReader. Remember the file name if a reader was open. Once the
reader requested again open the file if there is stored name for it. Put
released ESMReader to the back of the free items list. Close ESMReader's from
the front of the free items list.
Cached item can be used only by one client at the same time. If the same item is
requested twice exception is thrown. This should never happen in practice. If
this happens need to fix the client logic.
It's allowed to go over the capacity limit when requesting different readers.
Ideally this should never happen but there will be system error anyway
signalizing about too many open files. Need to fix client logic in this case.
All places that were using a vector of ESMReaders now using the cache. Cache is
local for each use case and there is no need for a thread safety.
If object is too big iteration over all tiles covering it can take too much
time. Limit bounds to a square around a player position to cover only tiles
that will be present in navmesh based on max tiles number option.
Each object is associated with a set of tiles its present in. Culling can
reduce this set but it has to be update when bounds change position. Do this
in TileCachedRecastMeshManager::setBounds updating the set and adding/removing
objects to the corresponding CachedRecastMeshManagers.
/<<BUILDDIR>>/openmw-0.47.0+git202112160802~ubuntu18.04.1/apps/navmeshtool/worldspacedata.cpp:213:109: error: class template argument deduction failed:
heightfields.emplace_back(std::vector(std::begin(landData.mHeights), std::end(landData.mHeights)));
^
/<<BUILDDIR>>/openmw-0.47.0+git202112160802~ubuntu18.04.1/apps/navmeshtool/worldspacedata.cpp:213:109: error: no matching function for call to ‘vector(float*, float*)’
In file included from /usr/include/c++/7/vector:64:0,
from /<<BUILDDIR>>/openmw-0.47.0+git202112160802~ubuntu18.04.1/components/esm/loadpgrd.hpp:5,
from /<<BUILDDIR>>/openmw-0.47.0+git202112160802~ubuntu18.04.1/components/misc/convert.hpp:5,
from /<<BUILDDIR>>/openmw-0.47.0+git202112160802~ubuntu18.04.1/components/bullethelpers/collisionobject.hpp:4,
from /<<BUILDDIR>>/openmw-0.47.0+git202112160802~ubuntu18.04.1/apps/navmeshtool/worldspacedata.hpp:4,
from /<<BUILDDIR>>/openmw-0.47.0+git202112160802~ubuntu18.04.1/apps/navmeshtool/worldspacedata.cpp:1:
/usr/include/c++/7/bits/stl_vector.h:411:2: note: candidate: template<class _Tp, class _Alloc, class _InputIterator, class> vector(_InputIterator, _InputIterator, const _Alloc&)-> std::vector<_Tp, _Alloc>
vector(_InputIterator __first, _InputIterator __last,
^~~~~~
