public PointList GetAdjacentUnwalkedTiles(Point origin, Faction faction)
{
PointList list = GetVisibleAdjacentPoints(origin, new PointList());
PointList factionWalkedOnList = new PointList();
if (_tilesWalkedOn.ContainsKey(faction))
{ factionWalkedOnList = _tilesWalkedOn[faction]; }
for(int i=list.Count-1; i >= 0; i--)
{
Point point = list[i];
if (factionWalkedOnList.ContainsLocation(point.X, point.Y))
{ list.RemoveAt(i); }
}
return list;
}
public PointList GetVisibleAdjacentPoints(Point origin, PointList skipPoints)
{
PointList adjacentPoints = new PointList();
MapTileList originTiles = GetMapTilesForPoint(origin);
Boolean originBlocksLineOfSightNorth = false;
Boolean originBlocksLineOfSightEast = false;
Boolean originBlocksLineOfSightSouth = false;
Boolean originBlocksLineOfSightWest = false;
if (originTiles.BlocksLineOfSight)
{ return adjacentPoints; } // If the tile itself blocks all line of sight, then nothing is visible
if (originTiles.BlocksLineOfSightNorth)
{ originBlocksLineOfSightNorth = true; }
if (originTiles.BlocksLineOfSightEast)
{ originBlocksLineOfSightEast = true; }
if (originTiles.BlocksLineOfSightSouth)
{ originBlocksLineOfSightSouth = true; }
if (originTiles.BlocksLineOfSightWest)
{ originBlocksLineOfSightWest = true; }
if (origin.X > 0 && !originBlocksLineOfSightWest && !skipPoints.ContainsLocation(origin.X - 1, origin.Y))
{ adjacentPoints.Add(new Point(origin.X - 1, origin.Y)); }
if (origin.X < MAP_WIDTH_IN_TILES - 1 && !originBlocksLineOfSightEast && !skipPoints.ContainsLocation(origin.X + 1, origin.Y))
{ adjacentPoints.Add(new Point(origin.X + 1, origin.Y)); }
if (origin.Y > 0 && !originBlocksLineOfSightNorth && !skipPoints.ContainsLocation(origin.X, origin.Y - 1))
{ adjacentPoints.Add(new Point(origin.X, origin.Y - 1)); }
if (origin.Y < MAP_HEIGHT_IN_TILES - 1 && !originBlocksLineOfSightSouth && !skipPoints.ContainsLocation(origin.X, origin.Y+1))
{ adjacentPoints.Add(new Point(origin.X, origin.Y + 1)); }
return adjacentPoints;
}