Add periodic calls to send_endlevel_packet in kmatrix if
Control_center_destroyed is false.
Needed because after finishing the last level, kmatrix is called from a
different place where Control_center_destroyed is already false.
It looks like this issue was introduced in Rebirth 0.56 with the
split off of the ipx code (febe5d1). That commit removes the call to
multi_endlevel_poll2 from kmatrix_view, which did the same periodic
sends. (Maybe because in D1 Control_center_destroyed was always true
in kmatrix so it was not needed there.)
Reported-by: snytek <#520>
Fixes: febe5d1 ("Abstracting networking protocols")
clang-13 fails to sufficiently inline this construct, causing it to emit
an unnecessary call to check_null_pointer_conversion on a path where
m_ptr is already guaranteed to be non-nullptr. That call in turn
causes a linker error, since no other site using valptridx<wall> needs
check_null_pointer_conversion instantiated. Rather than provide the
instantiation, rework the logic to avoid the need for the dead call.
This variable is only used in a print statement which is itself
commented out. Move the declaration, assignment, and commented print
into a preprocessor guard.
clang chokes on use of a `constexpr bool` that is initialized separately
from its definition. gcc allows this. Move the value computation into
a constexpr helper function, so that the variable can be defined and
initialized in the same statement.
Instead of creating the powerup from a player, then overwriting the
location and velocity of the powerup, and fixing up its segment, create
the powerup directly where it should be, with the intended velocity.
Iterating over it returns each side number in turn. This allows
converting many loops of the form:
```
for (int i = 0; i < MAX_SIDES_PER_SEGMENT; ++i)
```
to the compact form:
```
for (const auto i : MAX_SIDES_PER_SEGMENT)
```
The compact form brings the usual benefit of range-based for: delegating
iteration to the compiler prevents the loop body from skipping a step,
and makes clear in the code that this is the case.
Some flags merit a type other than int8_t. Begin moving flags out to
distinct variables with their own type.
Add static_assert checks that the ABI relevant structures do not change.
A level can have a secret exit without having a mission entry describing
where to go when the secret exit is used. Switch from an assertion
failure in that case to a log message.
This does not need to be a local function. It does not need to access
anything from the containing scope, so move it to be a static method on
the class.
