Misc. fixes.

src/battle/battle.c

@@ -388,6 +388,8 @@ static void postBattle(void)
 
 	updateAccuracyStats(game.stats);
 	
+	game.currentMission->completed = (battle.status == MS_COMPLETE || !battle.numObjectivesTotal);
+	
 	saveGame();
 }
 

src/battle/bullets.c

@@ -93,7 +93,7 @@ void doBullets(void)
 		{
 			addMissileEngineEffect(b);
 
-			if (b->life < MISSILE_LIFE - (FPS / 2))
+			if (b->life < MISSILE_LIFE - (FPS / 4))
 			{
 				huntTarget(b);
 			}

src/galaxy/starSystems.c

@@ -171,7 +171,7 @@ void updateStarSystemMissions(void)
 			prev = mission;
 		}
 
-		if (starSystem->isSol)
+		if (!starSystem->isSol)
 		{
 			game.availableMissions += starSystem->availableMissions;
 		}