Add factory placement to the campaign files.

This also removes the "factory" type from the normal strike target
(money generating) generators to avoid confusion. Later only control
points with factories will be able to spawn ground units, at which point
these will no longer generate income.

https://github.com/Khopa/dcs_liberation/issues/986

gen/groundobjectsgen.py

@@ -14,7 +14,7 @@ from typing import Dict, Iterator, Optional, TYPE_CHECKING, Type, List
 from dcs import Mission, Point, unitgroup
 from dcs.country import Country
 from dcs.point import StaticPoint
-from dcs.statics import fortification_map, warehouse_map, Warehouse
+from dcs.statics import Fortification, fortification_map, warehouse_map, Warehouse
 from dcs.task import (
     ActivateBeaconCommand,
     ActivateICLSCommand,
@@ -34,6 +34,7 @@ from game.theater import ControlPoint, TheaterGroundObject
 from game.theater.theatergroundobject import (
     BuildingGroundObject,
     CarrierGroundObject,
+    FactoryGroundObject,
     GenericCarrierGroundObject,
     LhaGroundObject,
     ShipGroundObject,
@@ -213,7 +214,7 @@ class BuildingSiteGenerator(GenericGroundObjectGenerator):
                 f"{self.ground_object.dcs_identifier} not found in static maps"
             )
 
-    def generate_vehicle_group(self, unit_type: UnitType) -> None:
+    def generate_vehicle_group(self, unit_type: Type[UnitType]) -> None:
         if not self.ground_object.is_dead:
             group = self.m.vehicle_group(
                 country=self.country,
@@ -224,7 +225,7 @@ class BuildingSiteGenerator(GenericGroundObjectGenerator):
             )
             self._register_fortification(group)
 
-    def generate_static(self, static_type: StaticType) -> None:
+    def generate_static(self, static_type: Type[StaticType]) -> None:
         group = self.m.static_group(
             country=self.country,
             name=self.ground_object.group_name,
@@ -244,6 +245,22 @@ class BuildingSiteGenerator(GenericGroundObjectGenerator):
         self.unit_map.add_building(self.ground_object, building)
 
 
+class FactoryGenerator(BuildingSiteGenerator):
+    """Generator for factory sites.
+
+    Factory sites are the buildings that allow the recruitment of ground units.
+    Destroying these prevents the owner from recruiting ground units at the connected
+    control point.
+    """
+
+    def generate(self) -> None:
+        if self.game.position_culled(self.ground_object.position):
+            return
+
+        # TODO: Faction specific?
+        self.generate_static(Fortification.Workshop_A)
+
+
 class GenericCarrierGenerator(GenericGroundObjectGenerator):
     """Base type for carrier group generation.
 
@@ -557,7 +574,11 @@ class GroundObjectsGenerator:
             ).generate()
 
             for ground_object in cp.ground_objects:
-                if isinstance(ground_object, BuildingGroundObject):
+                if isinstance(ground_object, FactoryGroundObject):
+                    generator = FactoryGenerator(
+                        ground_object, country, self.game, self.m, self.unit_map
+                    )
+                elif isinstance(ground_object, BuildingGroundObject):
                     generator = BuildingSiteGenerator(
                         ground_object, country, self.game, self.m, self.unit_map
                     )