/// <summary>
/// Checks whether or not the cell should be alive or dead.
/// </summary>
/// <param name="f"></param>
/// <param name="x"></param>
/// <param name="y"></param>
public void CheckConditions(Field f, int x, int y)
{
int aliveNeighbors = CountAliveNeighbors(f,x,y);
if (aliveNeighbors > 0)
{
//Console.WriteLine(aliveNeighbors.ToString());
}
if (Alive)
{
if (aliveNeighbors != 2 && aliveNeighbors != 3)
{
f.AddCellToChanged(this);
}
}
else
{
if (aliveNeighbors == 3)
{
f.AddCellToChanged(this);
}
}
}
/// <summary>
/// Counts all the alive neighbors of the cell.
/// </summary>
/// <param name="f"></param>
/// <param name="x"></param>
/// <param name="y"></param>
/// <returns></returns>
private int CountAliveNeighbors(Field f, int x, int y)
{
Cell[,] cells = f.Cells;
int width = f.WidthInCells;
int height = f.HeightInCells;
int count = 0;
Point left_top = FormatPoint(new Point(x - 1, y - 1), f);
Point mid_top = FormatPoint(new Point(x, y - 1), f);
Point right_top = FormatPoint(new Point(x + 1, y - 1), f);
Point left_mid = FormatPoint(new Point(x - 1, y), f);
Point right_mid = FormatPoint(new Point(x + 1, y), f);
Point left_bot = FormatPoint(new Point(x - 1, y + 1), f);
Point mid_bot = FormatPoint(new Point(x, y + 1), f);
Point right_bot = FormatPoint(new Point(x + 1, y + 1), f);
if (cells[left_top.X, left_top.Y].Alive)
{
count++;
}
if (cells[mid_top.X, mid_top.Y].Alive)
{
count++;
}
if (cells[right_top.X, right_top.Y].Alive)
{
count++;
}
if (cells[left_mid.X, left_mid.Y].Alive)
{
count++;
}
if (cells[right_mid.X, right_mid.Y].Alive)
{
count++;
}
if (cells[left_bot.X, left_bot.Y].Alive)
{
count++;
}
if (cells[mid_bot.X, mid_bot.Y].Alive)
{
count++;
}
if (cells[right_bot.X, right_bot.Y].Alive)
{
count++;
}
return count;
}
/// <summary>
/// Formats the point if it is not contained in the field.
/// </summary>
/// <param name="p"></param>
private Point FormatPoint(Point p, Field f)
{
int width = f.WidthInCells;
int height = f.HeightInCells;
Rectangle cellBounds = new Rectangle(0, 0, width, height);
if (!cellBounds.Contains(p))
{
int newX = p.X;
int newY = p.Y;
if (p.X < 0)
{
newX = width - 1;
}
if (p.X >= width)
{
newX = 0;
}
if (p.Y < 0)
{
newY = height - 1;
}
if (p.Y >= height)
{
newY = 0;
}
p = new Point(newX, newY);
}
return p;
}
/// <summary>
/// LoadContent will be called once per game and is the place to load
/// all of your content.
/// </summary>
protected override void LoadContent()
{
spriteBatch = new SpriteBatch(GraphicsDevice);
cell = new Texture2D(GraphicsDevice, 1, 1);
cell.SetData(new Color[] { Color.White });
font = Content.Load<SpriteFont>("Verdana");
field = new Field(field_W, field_H, cellSize, cell, buffer, interval, this);
// TODO: use this.Content to load your game content here
}
