public ChemBlock(ChemicalElement element, Texture2D texture, Vector2 pos, Vector2 size, Color color) : base(texture, pos, size, color, PlatformObjectType.Pushable)
{
this.element = element;
chemGrid = new ChemGrid(this);
}
public void UpdateConnectivity()
{
Dictionary <Point, ChemBlock> blockMapping = new Dictionary <Point, ChemBlock>();
HashSet <Point> inactiveBlocks = new HashSet <Point>();
foreach (KeyValuePair <ChemBlock, Point> kv in blocks)
{
blockMapping.Add(kv.Value, kv.Key);
inactiveBlocks.Add(kv.Value);
}
//now flood fill regions until everything is filled
while (inactiveBlocks.Count > 0)
{
Point originPoint = inactiveBlocks.First();
inactiveBlocks.Remove(originPoint);
ChemBlock originBlock = blockMapping[originPoint];
ChemGrid newGrid = new ChemGrid(originBlock);
originBlock.chemGrid = newGrid;
originBlock.UnbondFromGroup();
List <Point> activeBlocks = new List <Point>()
{
originPoint
};
List <Point> nextActiveBlocks = new List <Point>();
List <Point> finalPositions = new List <Point>();
while (activeBlocks.Count > 0)
{
foreach (Point p in activeBlocks)
{
Func <Point, bool> addBlock = pos =>
{
inactiveBlocks.Remove(pos);
nextActiveBlocks.Add(pos);
ChemBlock block = blockMapping[pos];
block.UnbondFromGroup();
block.chemGrid = null;
newGrid.AddNail(blockMapping[p], block);
return(false);
};
Point up = new Point(p.X, p.Y - 1);
Point down = new Point(p.X, p.Y + 1);
Point left = new Point(p.X - 1, p.Y);
Point right = new Point(p.X + 1, p.Y);
if (verticalBonds.Contains(up) && inactiveBlocks.Contains(up))
{
addBlock(up);
}
if (verticalBonds.Contains(p) && inactiveBlocks.Contains(down))
{
addBlock(down);
}
if (horizontalBonds.Contains(left) && inactiveBlocks.Contains(left))
{
addBlock(left);
}
if (horizontalBonds.Contains(p) && inactiveBlocks.Contains(right))
{
addBlock(right);
}
}
List <Point> temp = activeBlocks;
temp.Clear();
activeBlocks = nextActiveBlocks;
nextActiveBlocks = temp;
}
}
}