public TileCell GetCellCoordinateInDirection(Int32 sourceX, Int32 sourceY, CardinalDirection dir)
{
Int32 targetX, targetY;
TileCell cell = GetCellCoordinateInDirection(sourceX, sourceY, dir, out targetX, out targetY);
return(cell);
}
public CardinalDirection GetAdjacentDirectionFromSourceToTargetCell(TileCell source, TileCell target)
{
CardinalDirection dir = CardinalDirection.None;
if (source != null && target != null)
{
if (source.X == target.X)
{
if (target.Y > source.Y)
{
dir = CardinalDirection.South;
}
else if (target.Y < source.Y)
{
dir = CardinalDirection.North;
}
}
else if (source.Y == target.Y)
{
if (target.X > source.X)
{
dir = CardinalDirection.East;
}
else if (target.X < source.X)
{
dir = CardinalDirection.West;
}
}
}
return(dir);
}
public TileCell GetCellAtRealCoordinate(Double x, Double y)
{
Int32 mapColumn = (Int32)(x / TileSize);
Int32 mapRow = (Int32)(y / TileSize);
TileCell cell = GetCellAtCoordinate(mapColumn, mapRow);
return(cell);
}
/// <summary>
/// Returns whether we consider the supplied TileCell to equal this one. They must have the
/// same position.
/// </summary>
public override Boolean Equals(Object other)
{
Boolean equals = false;
TileCell otherCell = other as TileCell;
if (otherCell != null)
{
if (X == otherCell.X && Y == otherCell.Y && String.Equals(ParentKey, otherCell.ParentKey))
{
equals = true;
}
}
return(equals);
}
public List <IAStarNode> NeighborNodes(IAStarNode current)
{
List <IAStarNode> neighbors = new List <IAStarNode>();
TileCell northCell = GetCellCoordinateInDirection(current.X, current.Y, CardinalDirection.North);
TileCell eastCell = GetCellCoordinateInDirection(current.X, current.Y, CardinalDirection.East);
TileCell southCell = GetCellCoordinateInDirection(current.X, current.Y, CardinalDirection.South);
TileCell westCell = GetCellCoordinateInDirection(current.X, current.Y, CardinalDirection.West);
if (northCell != null && northCell.IsVoid)
{
northCell = null;
}
if (eastCell != null && eastCell.IsVoid)
{
eastCell = null;
}
if (southCell != null && southCell.IsVoid)
{
southCell = null;
}
if (westCell != null && westCell.IsVoid)
{
westCell = null;
}
if (northCell != null)
{
neighbors.Add(northCell);
}
if (eastCell != null)
{
neighbors.Add(eastCell);
}
if (southCell != null)
{
neighbors.Add(southCell);
}
if (westCell != null)
{
neighbors.Add(westCell);
}
return(neighbors);
}
/// <summary>
/// From some source position, given a direction, returns the cell coordinates in that direction.
/// The returned coordinates may not be on the map, so null will be returned.
/// </summary>
public TileCell GetCellCoordinateInDirection(Int32 sourceX, Int32 sourceY, CardinalDirection dir, out Int32 targetX, out Int32 targetY)
{
targetX = sourceX;
targetY = sourceY;
switch (dir)
{
case CardinalDirection.North: targetY--; break;
case CardinalDirection.East: targetX++; break;
case CardinalDirection.South: targetY++; break;
case CardinalDirection.West: targetX--; break;
}
TileCell targetCell = GetCellAtCoordinate(targetX, targetY);
return(targetCell);
}
public TileCell GetCellAtPosition(Position p)
{
TileCell cell = GetCellAtRealCoordinate(p.BottomCenterX, p.BottomCenterY);
return(cell);
}