/// <summary>
/// Checks a 2x2 <see cref="MapSquare" /> outside of the Quadtree
/// </summary>
/// <param name="sw_point">The South-West (Bottom-Left) point of the square</param>
private void CheckSpecialSquare(Vector2Int sw_point)
{
// Execute from main thread
ThreadQueuer.Instance.QueueMainThreadAction(() =>
{
var isWalkable = true;
var containsWater = false;
var containsLand = false;
var pixels = new List <Color>();
for (var x = sw_point.X; x < sw_point.X + 2; x++)
{
for (var y = sw_point.Y; y < sw_point.Y + 2; y++)
{
Color pixel;
if (MapDataManager.Instance.MapTexture.width > x &&
MapDataManager.Instance.MapTexture.height > y)
{
pixel = MapDataManager.Instance.MapTexture.GetPixel(x, y);
}
else
{
pixel = new Color(1, 1, 1, 1);
}
pixels.Add(pixel);
}
}
var specialSquare = new MapSquare(sw_point, 2)
{
MapType = MapTypes.Ground
};
foreach (var pixel in pixels)
{
var pixelType = pixel.GetMapType();
if (pixelType == MapTypes.Water && !containsWater)
{
containsWater = true;
}
else if (pixelType != MapTypes.Water && !containsLand)
{
containsLand = true;
}
if (containsWater && containsLand)
{
break;
}
}
if (!containsLand && containsWater)
{
specialSquare.MapType = MapTypes.Water;
isWalkable = false;
}
RegisterNewNode(specialSquare);
if (CheckedSpecialSquare != null)
{
CheckedSpecialSquare.Invoke(isWalkable, sw_point);
}
});
}