/// <summary>
/// Rebuilds the car graphics at the starting position.
/// </summary>
public void ResetEntity()
{
ClearEntity();
var definition = Phenotype.ToDefinition();
m_entity = new Entity(definition, m_physicsManager)
{
Id = Id
};
m_physicsManager.PostStep += PhysicsPostStep;
// reset the overview line alpha
for (var i = 0; i < m_overviewLine.Length; i++)
{
m_overviewLine[i].Color.A = 255;
}
HealthChanged = null;
Position = StartPosition;
m_lastPosition = StartPosition;
MaxDistance = 0;
MaxDistancePosition = Vector2.Zero;
DistanceTraveled = 0;
m_health = MaxHealth;
Speed = 0;
m_losingHealth = false;
m_speedSampleDelay = SpeedSampleDelay;
}
/// <summary>
/// Replace this car by performing a crossover with the two provided
/// phenotypes.
/// </summary>
/// <param name="a"></param>
/// <param name="b"></param>
/// <param name="mutate">
/// If true, perform a mutation after the crossover.
/// </param>
public void ReplaceWithCrossover(Phenotype a, Phenotype b, bool mutate)
{
Phenotype = Phenotype.CrossOver(a, b);
if (mutate)
{
Phenotype.Mutate();
}
ResetEntity();
}
/// <summary>
/// Creates a new car.
/// </summary>
/// <param name="physicsManager"></param>
/// <param name="phenotype">
/// Sets the phenotype of the car. If null, generates a random phenotype.
/// </param>
public Car(PhysicsManager physicsManager, Phenotype phenotype = null)
{
if (physicsManager == null)
{
throw new ArgumentNullException("physicsManager");
}
m_physicsManager = physicsManager;
if (phenotype != null)
{
Phenotype = phenotype;
ResetEntity();
}
else
{
Generate();
}
}
/// <summary>
/// Replace this car with a new randomly generated car.
/// </summary>
public void Generate()
{
ClearEntity();
Phenotype = new Phenotype();
ResetEntity();
}
/// <summary>
/// Generates a new Phenotype by crossing the two parents.
/// </summary>
/// <param name="a"></param>
/// <param name="b"></param>
/// <returns></returns>
public static Phenotype CrossOver(Phenotype a, Phenotype b)
{
Debug.Assert(CrossoverStrategy != null);
return(new Phenotype(CrossoverStrategy(a.m_genome, b.m_genome)));
}
