- Replaced raw pointers with references or smart pointers. Nullable
references are represented by `stmp::optional<const T&>`. (There are
many raw pointers still remaining. They should be replaced at some
point.)
- Added class template specializations `stmp::optional<T &>` and
`stmp::optional<const T&>`.
- Fixed `stmp::optional`'s various behaviors
- `World::{players, playerPersistents}` are now `std::array`.
- More uses of `stmp::optional` to clarify the semantics
- Renamed `PlayerThrownGrenade` to `PlayerThrewGrenade`
- Replaced old-style `for` loops with range based ones
- Deleted `Player`'s default constructors and `operator =`
- Deleted `TCGameMode`'s default constructor and `operator =`
- Deleted `CTFGameMode`'s default constructor and `operator =`
- Replaced `static_cast` with `dynamic_cast` for down-casting
- `RefCountedObject::operator*()` no longer requires non-constness to
return `T &`.
- Replaced the uses of `std::vector::operator[]` with `std::vector::at`
for bounds checking.
- Made some methods of `GameMap` `const`.
- Added some null checks.
Yellow cursor no longer visible, only shows at the ends of an !active block line
Normal block cursor is the one with the corners only
Solid frame cursor is used when making a line, the corners-only one doesn't look good on lines
The global RNG state is now protected from simultaneous accesses by
employing a mutex.
Performance sensitive code requiring generation of a large number of
random numbers can utilize `LocalRNG`. This is not thread-safe but
provides a much greater throughput. `LocalRNG` is seeded by the global
RNG only at construction time.
