protected override Vector2 DangerAcceleration()
{
var predators = VisibleEntities.OfType <Predator>().Where(b => b.IsAlive).ToList();
var acceleration = new Vector2(0, 0);
acceleration += Vector2.Multiply(Flee(predators), 7f);
return(acceleration);
}
protected Vector2 Separate(float desiredSeperation)
{
var steer = new Vector2(0, 0);
var others = VisibleEntities.OfType <Being>().Where(being => being.IsAlive && being.GetType() == GetType());
if (!others.Any())
{
return(steer);
}
foreach (var other in others)
{
if (other == this)
{
continue;
}
var distance = VectorHelper.TorusDistance(Position, other.Position);
if (distance < desiredSeperation)
{
var difference = Vector2.Subtract(Position, other.Position);
if (difference.Length() > 0)
{
difference = Vector2.Normalize(difference);
}
// Weight by distance
if (distance != 0)
{
difference = Vector2.Divide(difference, distance);
}
steer = Vector2.Add(steer, difference);
}
}
steer = Vector2.Divide(steer, others.Count());
if (steer.Length() > 0)
{
if (steer.Length() > 0)
{
steer = Vector2.Normalize(steer);
}
steer = Vector2.Multiply(steer, MaxSpeed);
steer = Vector2.Subtract(steer, Velocity);
steer = VectorHelper.Limit(steer, MaxForce);
}
return(steer);
}
protected override Vector2 HungryAcceleration()
{
var boids = VisibleEntities.OfType <Boid>().Where(b => b.IsAlive).ToList();
var predators = VisibleEntities.OfType <Predator>().Where(b => b.IsAlive).ToList();
var acceleration = new Vector2(0, 0);
acceleration += Vector2.Multiply(Flee(predators), 2f);
acceleration += Vector2.Multiply(Separate(10f), 0.5f);
acceleration += Vector2.Multiply(Align(boids), 0.5f);
acceleration += Vector2.Multiply(Cohesion(boids), 0.5f);
acceleration += Vector2.Multiply(Hunt(), 5f);
acceleration += Vector2.Multiply(Attack(), 10f);
return(acceleration);
}
