void NextGeneration()
{
UIScript.instance.generation.text = "Gen : " + ++genCount;
//evalute agent fitness
float maxScore = GetMaxScore();
UIScript.instance.prevScoreText.text = "PrevScore : " + maxScore;
//group them
//discard the bad agents
//select the good agents
List <GameObject> sucessors = GetGoodAgents(maxScore);
if (sucessors.Count == 0)
{
UIScript.instance.generation.text = "Gen : Extinct";
return;
}
int goodAgentCount = sucessors.Count;
int remainingAgent = noOfAgent - goodAgentCount;
//fill remaining population crossover
for (int i = 0; i < remainingAgent; i++)
{
GameObject temp = Instantiate(agentPrefab, Vector3.zero + agentParent.position, Quaternion.identity, agentParent);
if (Random.value < crossOverProbability)
{
AgentScript a1 = sucessors[Random.Range(0, goodAgentCount)].GetComponent <AgentScript>();
AgentScript a2 = sucessors[Random.Range(0, goodAgentCount)].GetComponent <AgentScript>();
float[][,] tempWeights = CrossOverWeights(a1.neural.GetWeights(), a2.neural.GetWeights());
float[][] tempBias = CrossOverBias(a1.neural.GetBias(), a2.neural.GetBias());
temp.GetComponent <AgentScript>().Intialize(tempWeights, tempBias, neuronsPerLayer);
}
else
{
AgentScript a = sucessors[Random.Range(0, goodAgentCount)].GetComponent <AgentScript>();
float[][,] tempWeights = MutationWeights(a.neural.GetWeights());
float[][] tempBias = MutationBias(a.neural.GetBias());
temp.GetComponent <AgentScript>().Intialize(tempWeights, tempBias, neuronsPerLayer);
}
//mutate agent
//add them to agentList
agentList.Add(temp);
}
foreach (GameObject go in sucessors)
{
if (go)
{
if (elitism)
{
GameObject temp = Instantiate(agentPrefab, Vector3.zero + agentParent.position, Quaternion.identity, agentParent);
AgentScript a = go.GetComponent <AgentScript>();
float[][,] tempWeights = a.neural.GetWeights();
float[][] tempBias = a.neural.GetBias();
AgentScript b = temp.GetComponent <AgentScript>();
b.Intialize(tempWeights, tempBias, neuronsPerLayer);
//Debug.Log("bs : "+a.neural.CompareBias(b.neural.GetBias()));
agentList.Add(temp);
}
Destroy(go);
}
}
//adding
//clearobstacle
ClearObstacle();
//clear score
score = 0f;
//start obstacle spawner
StartCoroutine(CreateObject());
CurrentAgent = agentList.Count;
}
