The minimum supported compiler versions now provide a depth-efficient
implementation of std::make_index_sequence, which removes the last
reason to carry a private implementation. In the case of clang, it
appears to have a special compiler intrinsic used to implement its
std::make_index_sequence.
Switch to the compiler-provided version for both gcc and clang.
Only the console player's last position needs to be remembered across
frames. Copy the console player's position out before processsing
object movement. For all other objects, retain a temporary for use by
the position recovery code.
This could be a shared variable instead, since it cannot be directly
influenced by gameplay. However, it is influenced by the game mode, and
keeping shared variables that are mode-specific would be more complexity
for very little savings.
The number of hostages on a level is a function of the level, not any
particular player. Move it to d_level_unique_object_state and rename it
to total_hostages.
The number of robots accumulated on a level is a function of the level,
not any particular player. Move it to d_level_unique_object_state and
rename it to accumulated_robots.
This removes the need to walk all objects when creating a new one, since
each object can have a private generation counter, unaware of other
objects. For compatibility with demos, mix in the object's index when
writing the signature value.
This was requested by a user in early 2018. However, the proposed
prototype was susceptible to various forms of desynchronization, and was
unsuitable for merging. No further revisions were proposed, and the
feature languished. This commit enables the guidebot in cooperative
games and addresses the known synchronization problems, as well as some
other bugs that were uncovered during light testing. This is classified
as an experimental feature because it has not been heavily tested in
complicated games.
Requested-by: cfeuersaenger <https://github.com/dxx-rebirth/dxx-rebirth/issues/364>
Remove use of object_guidebot_cannot_reach and instead track the
reachability of the object as a separate flag. This allows the game to
remember when an object was found, but unreachable. Previously, it
would store only that some unreachable object was found. Now, it stores
the index of the unreachable object. This extra information is not used
yet.
Reported-by: Dainslaif <https://github.com/dxx-rebirth/dxx-rebirth/issues/421>
Fixes: c3cead4319 ("Move Escort_goal_index to d_unique_buddy_state")
gcc-9 warns on taking the address of an unaligned member in a packed
structure. This structure does not need to be packed. Remove
__attribute__((packed)) and fix the code to implement I/O correctly
without packing.
Fix original bug that buddy was limited to 5 hints per program run, not
5 per boss as it probably should have been.
Due to savegame format limitations, this still is not right. Reloading
the game should restore Buddy_gave_hint_count to its value at save time,
but will not.
