Reset game state on new turn.

This may not be the way to do this long term, but it is how the old map
works so it's at least not a regression. It might be better to generate
events for the between-turn changes in state instead.

https://github.com/dcs-liberation/dcs_liberation/issues/2039

game/game.py

@@ -307,6 +307,7 @@ class Game:
         with logged_duration("Turn initialization"):
             self.initialize_turn(events)
 
+        events.begin_new_turn()
         EventStream.put_nowait(events)
 
         # Autosave progress

game/server/eventstream/models.py

@@ -35,6 +35,7 @@ class GameUpdateEventsJs(BaseModel):
     updated_control_points: set[int]
     reset_on_map_center: LeafletLatLon | None
     game_unloaded: bool
+    new_turn: bool
 
     @classmethod
     def from_events(
@@ -85,4 +86,5 @@ class GameUpdateEventsJs(BaseModel):
             updated_control_points=events.updated_control_points,
             reset_on_map_center=recenter_map,
             game_unloaded=events.game_unloaded,
+            new_turn=events.new_turn,
         )

game/sim/gameupdateevents.py

@@ -36,6 +36,7 @@ class GameUpdateEvents:
     updated_control_points: set[int] = field(default_factory=set)
     reset_on_map_center: LatLng | None = None
     game_unloaded: bool = False
+    new_turn: bool = False
     shutting_down: bool = False
 
     @property
@@ -136,6 +137,10 @@ class GameUpdateEvents:
             self.game_unloaded = False
         return self
 
+    def begin_new_turn(self) -> GameUpdateEvents:
+        self.new_turn = True
+        return self
+
     def shut_down(self) -> GameUpdateEvents:
         self.shutting_down = True
         return self