Move mission type compatibility to the target.

This was also needed in other parts of the UI and is easier to implement
in the target class anyway.

Note that DEAD is now properly restricted to air defense targets.

Also added error boxes to the UI for when planning fails on an invalid
target.

theater/controlpoint.py

@@ -2,8 +2,8 @@ from __future__ import annotations
 
 import itertools
 import re
-from typing import Dict, List, TYPE_CHECKING
 from enum import Enum
+from typing import Dict, Iterator, List, TYPE_CHECKING
 
 from dcs.mapping import Point
 from dcs.ships import (
@@ -20,12 +20,12 @@ from .base import Base
 from .missiontarget import MissionTarget
 from .theatergroundobject import (
     BaseDefenseGroundObject,
-    SamGroundObject,
     TheaterGroundObject,
 )
 
 if TYPE_CHECKING:
     from game import Game
+    from gen.flights.flight import FlightType
 
 
 class ControlPointType(Enum):
@@ -237,3 +237,28 @@ class ControlPoint(MissionTarget):
         from .start_generator import BaseDefenseGenerator
         self.base_defenses = []
         BaseDefenseGenerator(game, self).generate()
+
+    def mission_types(self, for_player: bool) -> Iterator[FlightType]:
+        yield from super().mission_types(for_player)
+        if self.is_friendly(for_player):
+            if self.is_fleet:
+                yield from [
+                    # TODO: FlightType.INTERCEPTION
+                    # TODO: Buddy tanking for the A-4?
+                    # TODO: Rescue chopper?
+                    # TODO: Inter-ship logistics?
+                ]
+            else:
+                yield from [
+                    # TODO: FlightType.INTERCEPTION
+                    # TODO: FlightType.LOGISTICS
+                ]
+        else:
+            if self.is_fleet:
+                yield from [
+                    # TODO: FlightType.ANTISHIP
+                ]
+            else:
+                yield from [
+                    # TODO: FlightType.STRIKE
+                ]