/// <summary>
/// Return the type of Cell acording to the Coordinates within the Grid
/// </summary>
/// <param name="grid"></param>
/// <param name="coor"></param>
/// <returns></returns>
public static CellType GetCellType(Grid grid, Coordinates coor)
{
if ((coor.X < 0 || coor.X > grid.GridWidth) || (coor.Y < 0 || coor.Y > grid.GridHeight) || (grid.GridHeight<1 || grid.GridWidth<1))
{
throw new ArgumentOutOfRangeException();
}
CellType cellType =CellType.BottomLeft;
if (coor.X == 0 && coor.Y == 0)
cellType = CellType.TopLeft;
else if (coor.X == 0 && coor.Y == grid.GridWidth - 1)
cellType = CellType.TopRight;
else if (coor.X == 0 && (coor.Y > 0 && coor.Y < grid.GridWidth - 1))
cellType = CellType.TopSide;
else if (coor.X == grid.GridHeight - 1 && coor.Y == 0)
cellType = CellType.BottomLeft;
else if (coor.X == grid.GridHeight - 1 && coor.Y == grid.GridWidth - 1)
cellType = CellType.BottomRight;
else if (coor.X == grid.GridHeight - 1 && (coor.Y > 0 && coor.Y < grid.GridWidth - 1))
cellType = CellType.BottomSide;
else if ((coor.X > 0 && coor.X < grid.GridHeight - 1) && coor.Y == 0)
cellType = CellType.LeftSide;
else if ((coor.X > 0 && coor.X < grid.GridHeight - 1) && coor.Y == grid.GridWidth - 1)
cellType = CellType.RightSide;
else if ((coor.X > 0 && coor.X < grid.GridHeight - 1) && (coor.Y > 0 && coor.Y < grid.GridWidth - 1))
cellType = CellType.Center;
return cellType;
}
/// <summary>
/// Return true if a cell in a specific coordinate change the status
/// </summary>
/// <param name="grid"></param>
/// <param name="coor"></param>
/// <returns></returns>
public static bool ChangeStatus(Grid grid, Coordinates coor)
{
//Calculate number of Alive Neighbour
int Neighbours = GridHelper.CountAliveNeighbours(grid,coor);
//Rules
if (grid[coor.X, coor.Y].IsAlive)
{
if (Neighbours != 2 && Neighbours != 3) return true;
}
if (!grid[coor.X, coor.Y].IsAlive)
{
if (Neighbours == 3) return true;
}
return false;
}
public Cell[] Start(Coordinates[] ListInitialCells, Game game)
{
inputGrid = new Grid(inputGrid.GridWidth, inputGrid.GridHeight);
for (int x = 0; x < inputGrid.GridHeight; x++)
{
Row newRow = new Row();
for (int y = 0; y < inputGrid.GridWidth; y++)
{
Cell newCell = new Cell(new Coordinates(x, y), 0, false, game.StartGame_Id);
newCell.type = GridHelper.GetCellType(inputGrid, newCell.Coor);
newRow.CellsList.Add(newCell);
}
inputGrid.RowsList.Add(newRow);
}
foreach (Coordinates coor in ListInitialCells)
{
//inputGrid[coor.X, coor.Y].IsAlive = true;
ListAmendedCell.Add(inputGrid[coor.X, coor.Y]);
}
return ListAmendedCell.ToArray();
}
public GenerationsModel(int GridWidth, int GridHeight)
{
if (GridWidth < 1 || GridHeight < 1)
throw new ArgumentException("Param must be greater than 0");
inputGrid = new Grid(GridWidth, GridHeight);
//ListAmendedCell = new ConcurrentBag<Cell>();
ListAmendedCell = new List<Cell>();
GridHelper.InitializeReachableCells();
}
/// <summary>
/// Check if the Neighbour cell is alive
/// </summary>
/// <param name="grid"></param>
/// <param name="cell"></param>
/// <param name="neighbour"></param>
/// <returns>returns 1 if alive otherwise 0</returns>
private static int IsAliveNeighbour(Grid grid, Coordinates cell, Coordinates neighbour)
{
int live = 0; // set default as 0
int x = cell.X + neighbour.X; // get x axis of neighbour
int y = cell.Y + neighbour.Y; // get y axis of neighbour
// check the computed bound is within range of grid, if it is not within bounds live is 0 as default
if ((x >= 0 && x < grid.GridHeight) && y >= 0 && y < grid.GridWidth)
{
// if reachable neighbour cell is alive then set live to 1 otherwise 0
live = grid[x, y].IsAlive ? 1 : 0;
}
return live;
}
/// <summary>
/// Count live adjacent cells for specified cell co-ordinates
/// </summary>
/// <param name="grid"></param>
/// <param name="coor"></param>
/// <returns>returns number of live neighbours</returns>
private static int CountAliveNeighbours(Grid grid, Coordinates coor)
{
int liveNeighbours = 0;
// Get the Cell type of current cell
CellType celltype = grid[coor.X,coor.Y].type;
List<Coordinates> reachableCells = new List<Coordinates>();
// populate reachable cells from current cell for easier traversing
GridHelper.ReachableCells.TryGetValue(celltype, out reachableCells);
if (reachableCells.Count == 0) throw new ArgumentNullException("Cannot find reachable co-ordinates");
foreach (Coordinates coord in reachableCells)
{
liveNeighbours += IsAliveNeighbour(grid, coor, coord);
}
return liveNeighbours;
}