public static float GetFormAllianceScore(Kingdom kingdom, Kingdom otherKingdom)
{
float totalScore = 0;
float totalStrength = 0;
float[] kingdomStrengths = Kingdom.All.Select(curKingdom => curKingdom.TotalStrength).OrderBy(a => a).ToArray();
int halfIndex = kingdomStrengths.Count() / 2;
float medianStrength;
if ((kingdomStrengths.Length % 2) == 0)
{
medianStrength = (kingdomStrengths.ElementAt(halfIndex) + kingdomStrengths.ElementAt(halfIndex - 1)) / 2;
}
else
{
medianStrength = kingdomStrengths.ElementAt(halfIndex);
}
// weak faction bonus
float averageStrength = totalStrength / Kingdom.All.Count;
if (kingdom.TotalStrength <= medianStrength)
{
totalScore += (int)AllianceScore.BelowMedianStrength;
}
// common enemies
IEnumerable <Kingdom> commonEnemies = FactionManager.GetEnemyKingdoms(kingdom).Intersect(FactionManager.GetEnemyKingdoms(otherKingdom));
totalScore += commonEnemies.Count() * (int)AllianceScore.HasCommonEnemy;
// bordering or inside territory modifier
if (kingdom.IsInsideTeritoryOf(otherKingdom))
{
float traitScore = 0;
traitScore -= (int)AllianceScore.SharesBorder * kingdom.Leader.GetHeroTraits().Calculating;
traitScore += (int)AllianceScore.SharesBorder * kingdom.Leader.GetHeroTraits().Mercy;
totalScore += traitScore;
}
// existing alliances
totalScore -= (int)AllianceScore.ExistingAlliance * Kingdom.All.Except(new[] { kingdom, otherKingdom }).Where(curKingdom => FactionManager.IsAlliedWithFaction(kingdom, curKingdom)).Count();
// relation modifier
float relationModifier = MBMath.ClampFloat((float)Math.Log((kingdom.Leader.GetRelation(otherKingdom.Leader) + 100f) / 100f, 1.5), -1, 1);
totalScore += (int)AllianceScore.Relationship * relationModifier;
return(totalScore);
}
