private double EvaluatorDribble()
{
double evaluation = 0;
// bonus for proximity to enemy goal (0,e-1).
Vector2d goalPosition = Constants.Uprights[0]; //upper-left post
if (!_owner.Team.AttackingLeft)
{
goalPosition = Constants.Uprights[2]; //upper-right post
}
Vector2d goalVector = goalPosition - _owner.PositionDouble;
double maxShotDistance = 2000;
if (goalVector.Length() < maxShotDistance)
{
evaluation += (Math.Pow(Math.E, (1 - goalVector.Length() / maxShotDistance)) - 1);
}
// bonus for player being under little pressure
InfluenceMap enemyMap = _owner.EnemyTeam.TeamInfluenceMap;
double interdiction = enemyMap.SumInArea(_owner.PositionOnInfMap(), 3);
if (interdiction < 3)
{
evaluation += (3 - interdiction);
}
// there should be a dominating bonus for players with good dribbling ability
return(evaluation);
}
/// <summary>
/// Returns a double that measures the usefulness of a lob pass to passTarget
/// </summary>
private double EvaluatorPassLob(Footballer passTarget)
{
double evaluation = 0;
Vector2d passVector = passTarget.PositionDouble - _owner.PositionDouble;
// add bonus for long passes (0,1)
evaluation += passVector.Length() / Constants.ActualXMax;
// add bonus for going in the direction of enemy goal (0,1)
Vector2d goalPosition = Constants.Uprights[0]; //upper-left post
if (!_owner.Team.AttackingLeft)
{
goalPosition = Constants.Uprights[2]; //upper-right post
}
double angle = passVector.AngleBetween(goalPosition - _owner.PositionDouble);
angle = Math.Abs(angle - Math.PI);
evaluation += (angle / Math.PI);
// add large bonus if target is alone.
InfluenceMap enemyMap = _owner.EnemyTeam.TeamInfluenceMap;
double interdiction = enemyMap.SumInArea(passTarget.PositionOnInfMap(), (UInt16)(passVector.Length() / (0.1 * Constants.ActualXMax) + 1));
if (interdiction < 1)
{
evaluation += 3;
}
return(evaluation);
}