public void Find_ArrayWithCell_ReportsProperCoordinates()
{
var cellToFind = new GameBoardCell();
GameBoardCell[,] cells =
{
{
new GameBoardCell(), new GameBoardCell(), new GameBoardCell()
},
{
new GameBoardCell(), new GameBoardCell(), new GameBoardCell()
},
{
cellToFind, new GameBoardCell(), new GameBoardCell()
},
{
new GameBoardCell(), new GameBoardCell(), new GameBoardCell()
},
{
new GameBoardCell(), new GameBoardCell(), new GameBoardCell()
}
};
var subject = new CellCoordinatesFinder();
CellCoordinates coordinates = subject.Find( cells, cellToFind );
coordinates.X.Should().Be( 2 );
coordinates.Y.Should().Be( 0 );
}
public int Count( GameBoardCell[,] gameBoardCells, CellCoordinates coordinates )
{
int numberOfLivingNeighbors = 0;
numberOfLivingNeighbors += PlusOneIfCellIsAlive( gameBoardCells, coordinates.X - 1, coordinates.Y - 1 );
numberOfLivingNeighbors += PlusOneIfCellIsAlive( gameBoardCells, coordinates.X - 1, coordinates.Y );
numberOfLivingNeighbors += PlusOneIfCellIsAlive( gameBoardCells, coordinates.X - 1, coordinates.Y + 1 );
numberOfLivingNeighbors += PlusOneIfCellIsAlive( gameBoardCells, coordinates.X , coordinates.Y - 1 );
numberOfLivingNeighbors += PlusOneIfCellIsAlive( gameBoardCells, coordinates.X, coordinates.Y + 1 );
numberOfLivingNeighbors += PlusOneIfCellIsAlive( gameBoardCells, coordinates.X + 1, coordinates.Y - 1 );
numberOfLivingNeighbors += PlusOneIfCellIsAlive( gameBoardCells, coordinates.X + 1, coordinates.Y );
numberOfLivingNeighbors += PlusOneIfCellIsAlive( gameBoardCells, coordinates.X + 1, coordinates.Y + 1 );
return numberOfLivingNeighbors;
}
private int PlusOneIfCellIsAlive( GameBoardCell[,] gameBoardCells, int xPosition, int yPosition )
{
int height = gameBoardCells.GetLength( 0 );
int width = gameBoardCells.GetLength( 1 );
if ( xPosition < 0 | xPosition > height | yPosition < 0 | yPosition > width)
{
return 0; // out of bounds
}
if ( gameBoardCells[xPosition, yPosition].IsAlive )
{
return 1;
}
return 0;
}
public GameBoardCell SetLife( int numberOfLivingNeighbors, GameBoardCell cell )
{
bool wasAlive = cell.IsAlive;
if ( numberOfLivingNeighbors <= 2 | numberOfLivingNeighbors > 3 )
{
cell.IsAlive = false;
}
if ( wasAlive && numberOfLivingNeighbors == 2 )
{
cell.IsAlive = true;
}
if ( numberOfLivingNeighbors == 3 )
{
cell.IsAlive = true;
}
return cell;
}
public CellCoordinates Find( GameBoardCell[,] gameBoardCells, GameBoardCell cell )
{
int w = gameBoardCells.GetLength( 0 ); // width
int h = gameBoardCells.GetLength( 1 ); // height
for ( int x = 0; x < w; ++x )
{
for ( int y = 0; y < h; ++y )
{
if ( gameBoardCells[x, y].Equals( cell ) )
{
return new CellCoordinates
{
X = x, Y = y
};
}
}
}
throw new KeyNotFoundException();
}
public GameBoardCell RandomizeCell( GameBoardCell cell )
{
var random = new Random();
cell.IsAlive = random.Next(100) < _aliveLikelihood;
return cell;
}