Beyond_Beyaan.Galaxy.SetHomeworld C# (CSharp) Метод

        public StarSystem SetHomeworld(Empire empire, out Planet homePlanet)
        {
            lock (_lockGalaxy) //Won't modify anything, but ensures that galaxy is created and won't throw exceptions due to contents being modified
            {
                Random r = new Random();
                List<StarSystem> potentialSystems = new List<StarSystem>(starSystems);
                while (true)
                {
                    if (potentialSystems.Count == 0)
                    {
                        homePlanet = null;
                        return null;
                    }
                    var potentialSystem = potentialSystems[r.Next(potentialSystems.Count)];
                    if (potentialSystem.EmpiresWithPlanetsInThisSystem.Count > 0)
                    {
                        potentialSystems.Remove(potentialSystem);
                        continue;
                    }
                    //Validation checks
                    bool FourParsecsSystem = false;
                    bool SixParsecsSystem = false;
                    bool AtLeastSixParsecsAwayFromOthers = true;
                    foreach (StarSystem starSystem in starSystems)
                    {
                        if (potentialSystem != starSystem)
                        {
                            int x = potentialSystem.X - starSystem.X;
                            int y = potentialSystem.Y - starSystem.Y;
                            double distance = Math.Sqrt((x * x) + (y * y));
                            if (distance <= PARSEC_SIZE_IN_PIXELS * 4)
                            {
                                if (!FourParsecsSystem)
                                {
                                    FourParsecsSystem = true;
                                }
                                else
                                {
                                    //Already have another star system that's within 4 parsecs
                                    SixParsecsSystem = true;
                                }
                                if (starSystem.EmpiresWithPlanetsInThisSystem.Count > 0)
                                {
                                    AtLeastSixParsecsAwayFromOthers = false;
                                    break;
                                }
                            }
                            else if (distance <= PARSEC_SIZE_IN_PIXELS * 6)
                            {
                                SixParsecsSystem = true;
                                if (starSystem.EmpiresWithPlanetsInThisSystem.Count > 0)
                                {
                                    AtLeastSixParsecsAwayFromOthers = false;
                                    break;
                                }
                            }
                        }
                    }
                    if (FourParsecsSystem && SixParsecsSystem && AtLeastSixParsecsAwayFromOthers)
                    {
                        potentialSystem.SetHomeworld(empire, out homePlanet, r);
                        return potentialSystem;
                    }
                    potentialSystems.Remove(potentialSystem);
                }
            }
        }