//treat 0 as none even though its technically shield.
private byte GetMutatedAttack(byte oldAttackId, EnemyObject enemy)
{
//likely that an attack with no associated animation will soft lock the game
if (oldAttackId == 0 || oldAttackId == 255)
{
return(oldAttackId);
}
var doMutation = Agent.Rng.NextDouble();
if (doMutation > Agent.Probabilities.EnemyAttackMutationRate)
{
return(oldAttackId);
}
var attackTier = AttackTierList.GetAttackTier(oldAttackId);
var newTier = RandomFunctions.GenerateGaussianByte(Agent.Rng, attackTier, 1, (byte)(AttackTierList.TieredAtpIds.Count - 1));
var changeType = Agent.Rng.NextDouble();
var oldType = AttackTierList.GetAttackType(oldAttackId);
if (oldType == "")
{
return(oldAttackId);
}
var newType = GetNewType(oldType, Agent.Probabilities.EnemyAttackTypeMutationRate, newTier);
List <int> attackList = AttackTierList.GetTierList(newType, newTier);
var attackIndex = Agent.Rng.Next(0, attackList.Count);
return((byte)attackList[attackIndex]);
}
private string GetNewType(string oldType, double mutationRate, int tier)
{
var changeType = Agent.Rng.NextDouble();
if (changeType > mutationRate && AttackTierList.GetTierList(oldType, tier).Count > 0)
{
return(oldType);
}
double coinFlip = Agent.Rng.NextDouble();
var type = FlipType(oldType, coinFlip > 0.5);
if (AttackTierList.GetTierList(type, tier).Count > 0)
{
return(type);
}
type = FlipType(oldType, coinFlip <= 0.5);
if (AttackTierList.GetTierList(type, tier).Count > 0)
{
return(type);
}
return(oldType);
}