private void BuildGraph()
{
Vector2I pos = new Vector2I(mapBounds.Position);
Vector2I size = new Vector2I(mapBounds.Size);
for (int x = 0; x < size.x; x++)
{
for (int y = 0; y < size.y; y++)
{
TileMapGraphNode currentTile = tileGraph[x, y];
if (currentTile != null && !currentTile.IsWall())
{
// NORTH
if (y > 0 && !tileGraph[x, y - 1].IsWall())
{
currentTile.SetNeighbor(tileGraph[x, y - 1], NeighborDirection.NORTH);
}
// NORTH_EAST
if (y > 0 && x < size.x - 1 && !tileGraph[x + 1, y - 1].IsWall())
{
currentTile.SetNeighbor(tileGraph[x + 1, y - 1], NeighborDirection.NORTH_EAST);
}
// NORTH_WEST
if (y > 0 && x > 0 && !tileGraph[x - 1, y - 1].IsWall())
{
currentTile.SetNeighbor(tileGraph[x - 1, y - 1], NeighborDirection.NORTH_WEST);
}
// SOUTH
if (y < size.y - 1 && !tileGraph[x, y + 1].IsWall())
{
currentTile.SetNeighbor(tileGraph[x, y + 1], NeighborDirection.SOUTH);
}
// SOUTH_EAST
if (y < size.y - 1 && x < size.x - 1 && !tileGraph[x + 1, y + 1].IsWall())
{
currentTile.SetNeighbor(tileGraph[x + 1, y + 1], NeighborDirection.SOUTH_EAST);
}
// SOUTH_WEST
if (y < size.y - 1 && x > 0 && !tileGraph[x - 1, y + 1].IsWall())
{
currentTile.SetNeighbor(tileGraph[x - 1, y + 1], NeighborDirection.SOUTH_WEST);
}
// EAST
if (x < size.x - 1 && !tileGraph[x + 1, y].IsWall())
{
currentTile.SetNeighbor(tileGraph[x + 1, y], NeighborDirection.EAST);
}
// WEST
if (x > 0 && !tileGraph[x - 1, y].IsWall())
{
currentTile.SetNeighbor(tileGraph[x - 1, y], NeighborDirection.WEST);
}
}
}
}
}
