private bool IsStable(Vector2i pos, Vector2i ignorePos, int horizontal, int vertical, out Vector2i? collapse)
{
const int maxHorizontal = 10;
const int maxVertical = 50;
collapse = null;
if (pos.X < 0 || pos.Y < 0 || pos.X >= _width || pos.Y >= _height)
return false;
if (_tiles[pos.X, pos.Y] == Tile.None)
return false;
if (_tiles[pos.X, pos.Y] == Tile.Floor)
return true;
if (horizontal >= maxHorizontal)
return false;
var effectiveMaxVertical = (float)Math.Ceiling(maxVertical * (2 - horizontal / (float)maxHorizontal));
if (vertical >= effectiveMaxVertical)
{
Console.WriteLine("hi");
collapse = pos;
return true;
}
var newPos = pos;
newPos.Y += 1;
if (!newPos.EqualTo(ignorePos) && IsStable(newPos, pos, horizontal, vertical + 1))
return true;
Vector2i? leftCollapse = null;
Vector2i? rightCollapse = null;
newPos = pos;
newPos.X -= 1;
if (!newPos.EqualTo(ignorePos) && IsStable(newPos, pos, horizontal + 1, vertical, out leftCollapse))
return true;
newPos = pos;
newPos.X += 1;
if (!newPos.EqualTo(ignorePos) && IsStable(newPos, pos, horizontal + 1, vertical, out rightCollapse))
return true;
if (leftCollapse.HasValue)
Collapse(leftCollapse.Value);
if (rightCollapse.HasValue)
Collapse(rightCollapse.Value);
return false;
}
