public void BuildPathMarker(PathNode newPath)
{
ResetPathMarkers();
m_currentPath = newPath;
while (newPath != null)
{
SetTileColor(newPath.GetNodePosition(), Color.Blue);
newPath = newPath.GetNextNode();
}
}
/// <summary>
/// This method attempts to plot a path between the startPosition and the endPosition.
/// If a path is found, the method returns true and the destPos contains the position
/// of the first node in the path list.
/// </summary>
/// <param name="startPosition">X,Y coordinates of the start position in pixels.</param>
/// <param name="endPosition">X,Y coordinates of the end position in pixels.</param>
/// <param name="destPos">X,Y coordinates of the first path node position in pixels, if one is found.</param>
/// <returns>True if a path is found.</returns>
public bool FindPathToDestination(Vector2 startPosition, Vector2 endPosition, out Vector2 destPos)
{
Vector2 startIndex = Map.MapHandler.GetInstance().GetTileIndex(startPosition);
Vector2 endIndex = Map.MapHandler.GetInstance().GetTileIndex(endPosition);
Vector2 closestSoFar = endIndex;
// Check if the destination is solid
bool isDestSolid = MapHandler.GetInstance().IsTileSolid(endIndex);
if (isDestSolid)
{
List<Vector2> adj = MapHandler.GetInstance().GetAdjacentsToTile(endIndex);
if (adj != null && adj.Count>0)
{
closestSoFar = adj[0];
foreach (Vector2 vec in adj)
{
if (!MapHandler.GetInstance().IsTileSolid(vec))
{
// Find the closest adjecent to the caller.
if (Vector2.Distance(closestSoFar, startIndex) > Vector2.Distance(vec, startIndex))
{
closestSoFar = vec;
}
//endIndex = vec;
//break;
}
}
}
}
endIndex = closestSoFar;
// Call Pathfinder find a path from the startIndex to the end index.
m_pnCurrPath = m_pfMyPathFinder.FindPath(startIndex, endIndex);
// If a path was found, then make the first node in the
// path the first destination of this entity.
if (m_pnCurrPath != null)
{
destPos = Map.MapHandler.GetInstance().GetTilePosition(m_pnCurrPath.GetNodePosition());
return true;
//base.MoveTo(targetPos);
}
destPos = Vector2.Zero;
return false ;
}