/// <summary>
/// Asetetaan uusi suunta. Hakee olioita edestä ja sivuilta ja arpoo tyhjistä kohdista uuden suunnan.
/// Jos eteen tai sivuille ei pääse, uusi suunta on taaksepäin.
/// </summary>
private void SetNextDirectionAndDestination()
{
PhysicsObject owner = this.Owner as PhysicsObject;
if (owner == null || owner.Game == null)
{
return;
}
Game game = owner.Game;
List <Vector> directions = new List <Vector> {
direction,
Vector.FromLengthAndAngle(tileSize, direction.Angle - Angle.RightAngle),
Vector.FromLengthAndAngle(tileSize, direction.Angle + Angle.RightAngle)
};
GameObject tile;
double radius = tileSize / 5;
while (directions.Count > 0)
{
Vector directionCandidate = RandomGen.SelectOne <Vector>(directions);
directions.Remove(directionCandidate);
if (labyrinthWallTag != null)
{
tile = game.GetObjectAt(owner.Position + directionCandidate, labyrinthWallTag, radius);
}
else
{
tile = game.GetObjectAt(owner.Position + directionCandidate, radius);
}
//PhysicsObjects only!
if (tile == null || tile as PhysicsObject == null || (owner.CollisionIgnoreGroup != 0 && (tile as PhysicsObject).CollisionIgnoreGroup == owner.CollisionIgnoreGroup))
{
direction = directionCandidate.Normalize() * tileSize;
//direction.X = Math.Round(direction.X);
//direction.Y = Math.Round(direction.Y);
destination = owner.Position + direction;
return;
}
}
direction = -direction.Normalize() * tileSize;
//direction.X = Math.Round(direction.X);
//direction.Y = Math.Round(direction.Y);
destination = owner.Position + direction;
}