public Point2D Move(Point2D enemy, Point2D player, bool pursuit, HashSet <Point2D> map)
{
var pick = new Random();
this._nextMove = this.GetRandomDirection(pick.Next(1, 5));
return(EnemyPhysicsUtils.IsMovementAllowed(enemy, this._nextMove, map)
? this._nextMove : new Point2D(0, 0));
}
/// <summary>
/// Returns a new position to move to, following
/// a clockwise pattern.
/// </summary>
/// <param name="pos">the current position</param>
/// <param name="map">the collections of points that are walkable by the enemy</param>
/// <returns>a new position</returns>
private Point2D NormalMovement(Point2D pos, HashSet <Point2D> map)
{
this._pathfindingList = new List <Point2D>();
if (this._movementStack.Count == 0)
{
this.FillStack();
}
if (!EnemyPhysicsUtils.IsMovementAllowed(pos, this._nextMove, map))
{
this._nextMove = this.NewMove();
}
return(EnemyPhysicsUtils.IsMovementAllowed(pos, this._nextMove, map) ? this._nextMove : new Point2D(0, 0));
}
/// <summary>
/// Returns a new position to move to, the enemy.
/// Will always move towards the player position.
/// </summary>
/// <param name="start">the enemy starting position</param>
/// <param name="end">the position that wants to be reached</param>
/// <param name="map">the collections of points that are walkable by the enemy</param>
/// <returns>a new position</returns>
private Point2D PursuitMovement(Point2D start, Point2D end, HashSet <Point2D> map)
{
Point2D retval = null;
if (this._pathfindingList.Count == 0 ||
!this._pathfindingList[this._pathfindingList.Count - 1].Equals(end))
{
this._pathfindingList = Pathfinder.FindPath(start, end, EnemyPhysicsUtils.MapDimension, EnemyPhysicsUtils.MapDimension, map);
}
if (this._pathfindingList.Count != 0 && start.Equals(this._pathfindingList[0]))
{
retval = new Point2D(this._pathfindingList[0].X - start.X, this._pathfindingList[0].Y - start.Y);
}
return(retval != null && EnemyPhysicsUtils.IsMovementAllowed(start, retval, map) ? retval : new Point2D(0, 0));
}
