/// <summary>
/// Simulates the state of the cell at the given position.
/// </summary>
/// <param name="x">The position of the cell on the x-axis.</param>
/// <param name="y">The position of the cell on the y-axis.</param>
/// <param name="gameField">The IGameField to pull the data from.</param>
/// <returns>
/// Whether the given cell is 'dead' or 'alive'.
/// </returns>
private bool SimulateCell( int x, int y, IGameField gameField )
{
int neighborCount = this.GetAliveNeighborCount( x, y, gameField );
if( gameField.GetCellStateStrict( x, y ) )
{
// For a space that is 'populated':
// Each cell with one or no neighbors dies, as if by loneliness.
// Each cell with four or more neighbors dies, as if by overpopulation.
// Each cell with two or three neighbors survives.
return neighborCount == 2 || neighborCount == 3;
}
else
{
// For a space that is 'empty' or 'unpopulated'
// Each cell with three neighbors becomes populated.
return neighborCount == 3;
}
}
/// <summary>
/// Gets whether the given cell is considered 'alive'.
/// </summary>
/// <param name="x">The position of the cell on the x-axis.</param>
/// <param name="y">The position of the cell on the y-axis.</param>
/// <param name="gameField">The IGameField to pull the data from.</param>
/// <returns>
/// Returns 0 if the index is out of valid range or the cell is 'dead';
/// returns 1 if the cell is 'alive'.
/// </returns>
private int GetCellState( int x, int y, IGameField gameField )
{
if( this.hasSolidWalls )
{
if( x < 0 || x >= gameField.Width )
return 0;
if( y < 0 || y >= gameField.Height )
return 0;
return gameField.GetCellStateStrict( x, y ) ? 1 : 0;
}
else
{
return gameField.GetCellState( x, y ) ? 1 : 0;
}
}
/// <summary>
/// Refreshes the cell at the given position.
/// </summary>
/// <param name="x">The position of the cell on the x-axis.</param>
/// <param name="y">The position of the cell on the y-axis.</param>
/// <param name="gameField">The IGameField to pull the data from.</param>
private void RefreshCell( int x, int y, IGameField gameField )
{
bool isAlive = gameField.GetCellStateStrict( x, y );
Brush brush = this.GetBrush( isAlive );
Rectangle rect = this.cellField[x, y];
if( rect.Fill != brush )
{
rect.Fill = brush;
}
}