public List<GridNode> GetNeighbors(GridNode node, int distance = 1)
{
var neighbors = new List<GridNode>();
if (node == null)
{
return neighbors;
}
var gridPoint = node.GridPoint;
if (gridPoint == default(GridPoint)) return neighbors;
for (var x = gridPoint.X - distance; x <= gridPoint.X + distance; x++)
{
if (x < 0 || x > GridMaxX) continue;
for (var y = gridPoint.Y - distance; y <= gridPoint.Y + distance; y++)
{
if (y < 0 || y > GridMaxY) continue;
// Excluding itself
if (x == gridPoint.X && y == gridPoint.Y) continue;
var gridNode = InnerGrid[x, y];
if (gridNode != null)
{
neighbors.Add(gridNode);
}
}
}
return neighbors;
}
public static GridNode Create(Vector2 center, GridScene gridScene, NavCellDefinition navCell)
{
var def = new GridNode
{
_center = center,
Center = center + gridScene.Min,
_navCellDefinition = navCell,
_gridScene = gridScene
};
return def;
}