[Add] Allow Draktharr to get cargo missions, but with 50% frequency.

dat/mission.xml

@@ -17,6 +17,7 @@
    <faction>Independent</faction>
    <faction>Empire</faction>
    <faction>Soromid</faction>
+   <faction>Draktharr</faction>
   </avail>
  </mission>
  <mission name="Empire Recruitment">

dat/missions/cargo.lua

@@ -39,10 +39,16 @@ end
 
 -- Create the mission.
 function create()
-  local landed = space.getPlanet() -- Get landed planet.
+  landed = space.getPlanet() -- Get landed planet.
+
+  -- Only 50% chance of appearing on Draktharr systems.
+  dv = faction.get("Draktharr")
+  if landed:faction() == dv and rnd.int(1) == 0 then
+    misn.finish(false)
+  end
 
    -- Target destination.
-  local i = 0
+  i = 0
   repeat
     planet, system = space.getPlanet(misn.factions())
     i = i + 1
@@ -147,7 +153,7 @@ end
 
 -- Land hook.
 function land()
-  local landed = space.getPlanet()
+  landed = space.getPlanet()
   if landed == planet then
     if player.rmCargo(carg_id) then
       player.pay( reward )