/* Returns the zone that contains the cell.
*/
Zone FloodFillZone(Cell c, int zoneNumber, Zone zone = null)
{
// Only flood empty, zoneless cells.
if (c.IsFilled() || c.zoneNumber >= 0)
{
return(zone);
}
if (zone == null)
{
zone = new Zone(zoneNumber);
}
// Add the cell to the deadZone.
c.zoneNumber = zoneNumber;
zone.Add(c);
// Recursively call on the Von Neumann neighbors of the cell at (x, y).
List <Cell> adjacentCells = GetAdjacentCells(c);
foreach (Cell adjCell in adjacentCells)
{
zone = FloodFillZone(adjCell, zoneNumber, zone);
}
return(zone);
}
/* Returns the hScore for the step from fromCell to toCell.
*/
float GetCostForStep(Cell fromCell, Cell toCell)
{
float multiplier = (toCell.IsFilled()) ? filledStepCost : emptyStepCost;
return(multiplier * (Mathf.Abs(toCell.x - fromCell.x) + Mathf.Abs(toCell.y - fromCell.y)));
}