private IEnumerable <BarbarianTribeConfiguration> AddBarbarianTribesToRegion(ConfigurationRegion region, int barbarianTribesToCreate)
{
var maxTries = barbarianTribesToCreate * 25; // The maximum number of valid point generation attempts
var i = 0;
var ipGroups = region.CityIps.GroupBy(cityIp => cityIp / (CITY_IP_PER_BARB_LVL * 2))
.Select(group => new { GroupIp = group.Key, CityIps = group.ToList() })
.OrderByDescending(group => group.GroupIp)
.ToArray();
while (maxTries > 0 && i < barbarianTribesToCreate)
{
var position = region.GetRandomPosition();
if (!IsLocationAvailable(position))
{
maxTries--;
continue;
}
int cityIp;
if (i < ipGroups.Length && ipGroups[i].CityIps.Count > 0)
{
cityIp = ipGroups[i].CityIps.First();
ipGroups[i].CityIps.RemoveAt(0);
}
else
{
cityIp = ipGroups.SelectMany(group => @group.CityIps).FirstOrDefault();
}
byte level;
// Make sure non-empty regions have at least 1 low level barb
if (region.CityIps.Count > 0 && i + 1 == barbarianTribesToCreate && region.BarbLevels.All(barbLevel => barbLevel < 2 || barbLevel > 4))
{
level = (byte)Config.Random.Next(2, 5);
}
// If we are generating for a specific city
else if (cityIp > 0)
{
// Returns a random barb level within a 5 level range.
// The range is determined by the provided city_ip.
// E.g., a city with 150 ip will result in barb lvl 4-8.
level = (byte)((cityIp / CITY_IP_PER_BARB_LVL).Clamp(1, 6) + Config.Random.Next(0, 5));
}
// Pick a random one if we already have a low level and we are generating the free barb
else
{
level = (byte)Config.Random.Next(2, 11);
}
level = level.Clamp((byte)1, (byte)10);
region.BarbLevels.Add(level);
yield return(new BarbarianTribeConfiguration(level, position));
i++;
}
}
private int GetBarbarianTribesToGenerate(ConfigurationRegion region)
{
var cityCount = region.CityIps.Count;
var barbCount = region.BarbLevels.Count;
var neededSpawns = MIN_BARBS_PER_REGION; // Start with min amount
neededSpawns += cityCount; // Add another barb for each city
neededSpawns = Math.Min(neededSpawns, MAX_BARBS_PER_REGION); // Cap result
neededSpawns -= barbCount; // Subtract existing barbs from result
neededSpawns = Math.Max(0, neededSpawns); // Keep result at 0 or higher
return(neededSpawns);
}
private ConfigurationRegion GenerateRegion(Position regionPosition, List <IBarbarianTribe> existingBarbarianTribes)
{
var region = new ConfigurationRegion(regionPosition);
foreach (var barbarianTribe in existingBarbarianTribes
.Where(barbarianTribe => region.IsWithinRegion(barbarianTribe.PrimaryPosition)))
{
region.BarbLevels.Add(barbarianTribe.Lvl);
}
// We are not locking cities here but all we are accessing is the primary position and the value
// which are never null
foreach (var city in cityManager.AllCities().Where(city => region.IsWithinRegion(city.PrimaryPosition)))
{
region.CityIps.Add(city.Value);
}
return(region);
}