2 files changed, 11 insertions, 0 deletions
diff --git a/lib/colonial_twilight/forces.rb b/lib/colonial_twilight/forces.rb
index f2b4149..6d26dea 100644
--- a/lib/colonial_twilight/forces.rb
+++ b/lib/colonial_twilight/forces.rb
@@ -119,6 +119,13 @@ module ColonialTwilight
       update_control
     end
 
+    def activate(num)
+      raise "can't activate #{num}" if @fln_underground < num
+
+      @fln_underground -= num
+      @fln_active += num
+    end
+
     private
 
     def add_base(type, num = 1)
diff --git a/lib/colonial_twilight/spaces.rb b/lib/colonial_twilight/spaces.rb
index d85954f..83d9082 100644
--- a/lib/colonial_twilight/spaces.rb
+++ b/lib/colonial_twilight/spaces.rb
@@ -177,6 +177,10 @@ module ColonialTwilight
         raise "unknown shift direction : #{towards}"
       end
     end
+
+    def activate(num)
+      @forces.activate(num)
+    end
   end
 
   class City < Sector