Ground objects are always generated and destroyable, even when it's not the current mission objective.

Fix : SAM site destruction status is saved correctly.
Added most SAM site to generator.

gen/sam/group_generator.py

@@ -0,0 +1,73 @@
+import math
+import random
+
+from dcs import unitgroup
+from dcs.point import PointAction
+from dcs.unit import Vehicle
+
+
+class AntiAirGroupGenerator():
+
+    def __init__(self, game, ground_object, group_object_group_id):
+        self.game = game
+        self.go = ground_object
+        self.position = ground_object.position
+        self.heading = random.randint(0, 359)
+        self.vg = unitgroup.VehicleGroup(self.game.next_group_id(), self.go.group_identifier)
+
+        wp = self.vg.add_waypoint(self.position, PointAction.OffRoad, 0)
+        wp.ETA_locked = True
+
+    def generate(self):
+        raise NotImplementedError
+
+    def get_generated_group(self):
+        return self.vg
+
+    def add_unit(self, unit_type, name, pos_x, pos_y, heading):
+
+        nn = "cgroup|" + str(self.go.cp_id) + '|' + str(self.go.group_id) + '|' + str(self.go.group_identifier) + "|" + name
+
+        unit = Vehicle(self.game.next_unit_id(),
+                       nn, unit_type.id)
+        unit.position.x = pos_x
+        unit.position.y = pos_y
+        unit.heading = heading
+        self.vg.add_unit(unit)
+        return unit
+
+    def get_circular_position(self, num_units, launcher_distance, coverage=90):
+        """
+        Given a position on the map, array a group of units in a circle a uniform distance from the unit
+        :param num_units:
+            number of units to play on the circle
+        :param launcher_distance:
+            distance the units should be from the center unit
+        :param coverage:
+            0-360
+        :return:
+            list of tuples representing each unit location
+                [(pos_x, pos_y, heading), ...]
+        """
+        if coverage == 360:
+            # one of the positions is shared :'(
+            outer_offset = coverage / num_units
+        else:
+            outer_offset = coverage / (num_units - 1)
+
+        positions = []
+
+        if num_units % 2 == 0:
+            current_offset = self.heading - ((coverage / (num_units - 1)) / 2)
+        else:
+            current_offset = self.heading
+        current_offset -= outer_offset * (math.ceil(num_units / 2) - 1)
+        for x in range(1, num_units + 1):
+            positions.append((
+                self.position.x + launcher_distance * math.cos(math.radians(current_offset)),
+                self.position.y + launcher_distance * math.sin(math.radians(current_offset)),
+                current_offset,
+            ))
+            current_offset += outer_offset
+        return positions
+