/// <summary>
/// Moves to given position and returns the first point of the path.
/// <param name="followMode">Set this to true, if the variable mTarget
/// has been set and the MoveTo is supposed to follow a
/// GameObject</param>
/// </summary>
public Vector2? MoveTo(Vector2 targetPosition, bool followMode = false)
{
//Debug.WriteLine("Move from " + mPosition + " to " + targetPosition + " received, Lieutenant!");
if (!followMode) mTarget = null;
mDestination = targetPosition;
mPath = PathFinder.GetInstance().CalculatePath(Position, targetPosition, mOwner.GetType());
if (mPath != null)
{
// For debug drawing
if (GlobalValues.GetInstance().mShowPaths) CodeTest.AddPathToDraw(mPath, Position);
mNextWayPoint = mPath.mPoints.Pop();
ResetUpdateCounters(mNextWayPoint);
return mNextWayPoint;
}
Debug.WriteLine("Got no path!");
mNextWayPoint = null;
return null;
}
/// <summary>
/// Initiates the recalculation of the Position
/// </summary>
/// <returns>Returns true as long as it is moving.</returns>
public bool Update()
{
if (mPath == null || (ReachedNextWayPoint() && mPath.mPoints.Count == 0)) return false;
if (ReachedNextWayPoint())
{
mNextWayPoint = mPath.mPoints.Pop();
ResetUpdateCounters(mNextWayPoint);
}
ProcessMovement();
if (mPath == null) return false; // it may be that the previous call stops us
mCurrentUpdateCounter++;
if (mCurrentUpdateCounter > mEstimatedUpdatesToNextPoint
+ GlobalValues.GetInstance().mSkipWaypointTimeout)
{
// Looks like we can't reach the waypoint, what now?
// Try to abbreviate (skip waypoint):
if (mPath.mPoints.Count > 0 && PathFinder.GetInstance()
.DirectConnection(Position, mPath.mPoints.Peek(), mOwner.GetType()))
{
mNextWayPoint = mPath.mPoints.Pop();
ResetUpdateCounters(mNextWayPoint);
}
else if (mPath.mPoints.Count == 0 && (Position - mDestination).Length()<150)
{
// Stop movement as it doesn't matter anymore
mPath = null;
mNextWayPoint = null;
return false;
}
}
return true;
}
public FreeMovement(IMovable owner)
{
mSpeed = owner.MovementSpeed;
mOwner = owner;
mPath = new Path(new Stack<Vector2>());
}
/// <summary>
/// Adds a path to CodeTest.mPathlistToDraw, such that the given path
/// will be drawn on the screen.
/// </summary>
/// <param name="path">the path to be drawn</param>
/// <param name="startPosition">the start position to pre-add which by default is not part of a path</param>
public static void AddPathToDraw(Path path, Vector2 startPosition)
{
List<Vector2> list = new List<Vector2>(path.mPoints);
list.Insert(0, startPosition);
mPathlistToDraw.Add(list);
}