public static CellBoard TrimToLargestDeadArea(this CellBoard board)
{
var(largestArea, newSize) =
TrimToLargestDeadConnectedArea(board);
return(new CellBoard(newSize,
typeAtPosition: p => largestArea.Contains(p) ? CellType.Dead : CellType.Alive));
}
public static CellBoard ScaleAddNoiseAndSmooth(this CellBoard board, Random random, double noise, int times = 1)
{
for (int i = 0; i < times; i++)
{
board = board.Quadruple().AddNoise(random, noise).RunGenerations(1);
}
return(board);
}
public static CellBoard ScaleAndSmooth(this CellBoard board, int times = 1)
{
for (int i = 0; i < times; i++)
{
board = board.Quadruple().RunGenerations(1);
}
return(board);
}
public static CellBoard RemoveNoise(this CellBoard board)
{
var aliveAreas =
ConnectedAreaAnalyzer
.FindForegroundAreas(board.Dimensions, p => board[p] == CellType.Alive)
.Where(area => area.Area > 64)
.ToArray();
return(new CellBoard(board.Dimensions, pos => aliveAreas.Any(a => a.Contains(pos)) ? CellType.Alive : CellType.Dead));
}
public static (ConnectedArea, Size) TrimToLargestDeadConnectedArea(this CellBoard board) =>
// Rules taken from http://www.roguebasin.com/index.php?title=Cellular_Automata_Method_for_Generating_Random_Cave-Like_Levels public static CellBoard GenerateStandardCave(this CellBoard board) => board .RunGenerations(4, CellRule.FiveNeighborsOrInEmptyArea) .RunGenerations(3, CellRule.FiveOrMoreNeighbors);