This fixes several issues with compatibility with C++20. C++23 was also
tested, but apparently it does not have any additional breaking changes
compared to C++20 (or we don't have those).
VCMI still uses C++17 as before - goal is only to make potential
transition easier.
There were 2 cases that are deprecated in C++20 that we use:
- Floating point operations on enums are deprecated
- `this` can no longer be captured when using default capture by value
`[=]`
Both of those should now be replaced with code that works fine in both C+
+17 and in C++20 mode
Now VCMI will use either preferred language or install language to load
maps and campaigns that are part of "core" mod, or, in other words -
placed in Maps directory of H3 data (like most of manually downloaded
maps and campaigns are)
If game data is in English, then game can safely use encoding of player-
selected language (such as Chinese) to load maps. After all, both GBK
and all Win-125X encoding are superset of ASCII, so English map will
always load up correctly.
Maps that are part of a mod still use mod language as before - it is up
to mod maker to correctly set up mod language.
All text processing code is now located in lib/texts.
No changes other than code being moved around and adjustment of includes
Moved without changes:
Languages.h -> texts/Languages.h
MetaString.* -> texts/MetaString.*
TextOperations.* -> texts/TextOperations.*
Split into parts:
CGeneralTextHandler.* -> texts/CGeneralTextHandler.*
-> texts/CLegacyConfigParser.*
-> texts/TextLocalizationContainer.*
-> texts/TextIdentifier.h
