/// <summary>
/// Calculates Avoidance movement for flock agent by moving away from its neighbors' average positions
/// </summary>
/// <param name="flockAgent"></param>
/// <param name="context"></param>
/// <param name="contextCount"></param>
/// <param name="flock"></param>
/// <returns></returns>
public override Vector2 CalculateMove(FlockAgent flockAgent, Transform[] context, int contextCount, Flock flock)
{
if (contextCount == 0)
{
return(Vector2.zero);
}
_avoidanceMove = Vector2.zero;
_neighborsAvoided = 0;
for (int i = 0; i < contextCount; ++i)
{
_agentToNeighbor = (Vector2)context[i].position - flockAgent.Position;
if (_agentToNeighbor.sqrMagnitude < 4 * flock.AgentsAvoidanceRadiusSquared)
{
_avoidanceMove -= _agentToNeighbor;
_neighborsAvoided++;
}
}
if (_neighborsAvoided > 0)
{
_avoidanceMove /= _neighborsAvoided;
}
return(_avoidanceMove);
}
/// <summary> /// Calculates movement for flocking agents. /// </summary> /// <param name="flockAgent"></param> /// <param name="context"></param> /// <param name="flock"></param> /// <returns></returns> public abstract Vector2 CalculateMove(FlockAgent flockAgent, Transform[] context, int contextCount, Flock flock);
/// <summary>
/// Calculates Steered Cohesive movement for flock agent by averaging the distances between it.
/// and its neighbors.
/// </summary>
/// <param name="flockAgent"></param>
/// <param name="context"></param>
/// <param name="contextCount"></param>
/// <param name="flock"></param>
/// <returns></returns>
public override Vector2 CalculateMove(FlockAgent flockAgent, Transform[] context, int contextCount, Flock flock)
{
_cohesionMove = base.CalculateMove(flockAgent, context, contextCount, flock);
_cohesionMove = Vector2.SmoothDamp(flockAgent.Up, _cohesionMove, ref _currentVelocity, _smoothTime);
return(_cohesionMove);
}
/// <summary>
/// Calculates Alignment movement for flock agent by averaging the forward direction of each neighbor.
/// is facing.
/// </summary>
/// <param name="flockAgent"></param>
/// <param name="context"></param>
/// <param name="contextCount"></param>
/// <param name="flock"></param>
/// <returns></returns>
public override Vector2 CalculateMove(FlockAgent flockAgent, Transform[] context, int contextCount, Flock flock)
{
if (contextCount == 0)
{
return(flockAgent.Up);
}
_alignmentMove = Vector2.zero;
for (int i = 0; i < contextCount; ++i)
{
_alignmentMove += (Vector2)context[i].up;
}
_alignmentMove /= contextCount;
return(_alignmentMove);
}
/// <summary>
/// Calculates Cohesive movement for flock agent by averaging the distances between it
/// and its neighbors.
/// </summary>
/// <param name="flockAgent"></param>
/// <param name="context"></param>
/// <param name="contextCount"></param>
/// <param name="flock"></param>
/// <returns></returns>
public override Vector2 CalculateMove(FlockAgent flockAgent, Transform[] context, int contextCount, Flock flock)
{
if (contextCount == 0)
{
return(Vector2.zero);
}
_cohesionMove = Vector2.zero;
for (int i = 0; i < contextCount; ++i)
{
_cohesionMove += (Vector2)context[i].position;
}
_cohesionMove /= contextCount;
_cohesionMove -= flockAgent.Position;
return(_cohesionMove);
}
