/// <summary>
/// This method updates the status of each cell in the Game of Life board
/// </summary>
/// <param name="matrix">Matrix containing the cells of the Game of Life board</param>
/// <returns>The updated board matrix (The next day)</returns>
public static Cell[,] MakeMove(Cell[,] matrix)
{
// Copy all elements in matrix to _bufferMatrix
CopyCells(matrix);
// Update each cell in _bufferMatrix
for (int i = 0; i < matrix.GetLength(0); i++)
{
for (int j = 0; j < matrix.GetLength(1); j++)
{
int? cellStatus = matrix[i, j].Status;
UpdateCell(matrix, i, j, cellStatus);
}
}
return _bufferMatrix;
}
/// <summary>
/// Use to copy all elements in matrix to _bufferMatrix
/// </summary>
/// <param name="matrix">Matrix containing all cells of the Game of Life board</param>
/// <remarks>If elements in the parameter are not value types, the following modification is needed: replace contents in first nested loop with outcommented code</remarks>
private static void CopyCells(Cell[,] matrix)
{
int dimensionI = matrix.GetLength(0);
int dimensionJ = matrix.GetLength(1);
_bufferMatrix = new Cell[dimensionI, dimensionJ];
for (int i = 0; i < dimensionI; i++)
{
for (int j = 0; j < dimensionJ; j++)
{
_bufferMatrix[i, j] = matrix[i, j];
//// The following commented lines should replace the line above if Cell becomes a reference type instead of a value type.
//_bufferMatrix[i, j] = new Cell();
//_bufferMatrix[i,j].Status = matrix[i,j].Status;
}
}
}
/// <summary>
/// The constructor which will create a new game board
/// </summary>
/// <param name="size">The width of the board (the board is a square)</param>
public Game(uint size)
{
//Preconditions
if (size < 1) throw new ArgumentException("Size must be above 0");
if (size > MAX_BOARD_SIZE) throw new ArgumentException("Size must not rise above " + MAX_BOARD_SIZE);
_boardSize = size;
Board = new Cell[_boardSize, _boardSize];
//Will set the cells at the board to a random state (10% chance for zombie, 60% for living cells and 30% for dead cells
Random rng = new Random();
for (int a = 0; a < _boardSize; a++)
{
for (int b = 0; b < _boardSize; b++)
{
Board[a, b] = new Cell();
int smth = rng.Next(100);
if (smth < 10) { Board[a, b].Status = null; }
else if (smth < 60) { Board[a, b].Status = 1; }
else { Board[a, b].Status = 0; }
}
}
}
public void CellStatusChangeTest()
{
//Test the creation of a cell
Cell testCell1 = new Cell();
Assert.AreEqual(testCell1.Status, null);
//Test setting a cell's status to null again
Cell testCell2 = new Cell();
testCell2.Status = null;
Assert.AreEqual(testCell2.Status, null);
//Test setting a cell's status to 0
Cell testCell3 = new Cell();
testCell3.Status = 0;
Assert.AreEqual(testCell3.Status, 0);
//Test setting a cell's status to 1
Cell testCell4 = new Cell();
testCell4.Status = 1;
Assert.AreEqual(testCell4.Status, 1);
//Test setting a cell's status to 2
Cell testCell5 = new Cell();
testCell5.Status = 2;
Assert.AreEqual(testCell5.Status, null);
//Test setting a cell's status to -1
Cell testCell6 = new Cell();
testCell6.Status = -1;
Assert.AreEqual(testCell6.Status, null);
//Test resetting a cell's status to something new
Cell testCell7 = new Cell();
testCell7.Status = 1;
testCell7.Status = 0;
Assert.AreEqual(testCell7.Status, 0);
}
/// <summary>
/// Updates a single cell from the Game of Life matrix
/// </summary>
/// <param name="matrix">The matrix representing the Game of Life board</param>
/// <param name="row">Used to identify cell row</param>
/// <param name="col">Used to identify cell column</param>
/// <param name="cellStatus">The status of the matrix[i,j]'th cell. It is a parameter instead of having to figure it out inside the method to avoid excessive/unnecessary extra code</param>
/// <remarks>Updates to the cell is stored in a private field. && While checking the neighbours of every cell, there will inevitably be thrown multiple IndexOutOfRangeException, these are all caught but are not handled (as it is part of the method design).</remarks>
private static void UpdateCell(Cell[,] matrix, int row, int col, int? cellStatus)
{
if (cellStatus == null)
{ // If the cell is a zombie there's no hope for it.
return;
}
int neighbours = 0;
bool zombieNear = false;
for (int i = row - 1; i <= row + 1; i++)
{
for (int j = col - 1; j <= col + 1; j++)
{
if (i == row && j == col)
{
// The cell is not a neighbour of itself...
continue;
}
try
{
if (matrix[i, j].Status == 1)
{
neighbours++;
}
else if (zombieNear == false && cellStatus == 1 && matrix[i, j].Status == null)
{
// If there's an adjacent zombie and the cell is alive
zombieNear = true;
}
}
catch (IndexOutOfRangeException)
{
// This will happen for every cell on the edge of the board
}
}
}
// Time to figure out what happens with the cell!
if (cellStatus == 1)
{
if (neighbours <= 1 || neighbours >= 4)
{
_bufferMatrix[row, col].Status = 0;
}
else if (zombieNear == true && InfectedByZombie(row, col))
{ // Yet another casualty of the zombie apocalypse
return;
}
}
else if (cellStatus == 0 && neighbours == 3)
{ // One neighbour calls 911, one does cpr, and one keeps the zombies away
_bufferMatrix[row, col].Status = 1;
}
}
public void ModifyCellTest()
{
// Will check state mofications for every single cell
uint sizeOfBoard = 10;
int? zombieCell = null;
int? deadCell = 0;
int? livingCell = 1;
Game gameTest = new Game(sizeOfBoard);
//Create new cells to insert into the board
Cell[] cells = new Cell[sizeOfBoard * sizeOfBoard];
for (uint row = 0; row < sizeOfBoard; row++)
{
for (uint column = 0; column < sizeOfBoard; column++)
{
uint index = row * sizeOfBoard + column;
cells[index].Column = column;
cells[index].Row = row;
cells[index].Status = livingCell;
}
}
//Insert the cells
try
{
gameTest.ModifyCell(cells);
}
catch (InvalidOperationException ie)
{
Assert.Fail();
}
//Check the board to only contain living cells
for (uint a = 0; a < sizeOfBoard; a++)
{
for (uint b = 0; b < sizeOfBoard; b++)
{
Assert.AreEqual(gameTest[a,b], livingCell);
}
}
//Modify to a board of pure dead cells
for (uint row = 0; row < sizeOfBoard; row++)
{
for (uint column = 0; column < sizeOfBoard; column++)
{
uint index = row * sizeOfBoard + column;
cells[index].Column = column;
cells[index].Row = row;
cells[index].Status = 0;
}
}
//Insert the new cells
try
{
gameTest.ModifyCell(cells);
}
catch (InvalidOperationException ie)
{
Assert.Fail();
}
///Check the board to be of dead cells
for (uint a = 0; a < sizeOfBoard; a++)
{
for (uint b = 0; b < sizeOfBoard; b++)
{
Assert.AreEqual(gameTest[a, b], deadCell);
}
}
//Modify to a board of pure zombie cells - Arrrrrg....
for (uint row = 0; row < sizeOfBoard; row++)
{
for (uint column = 0; column < sizeOfBoard; column++)
{
uint index = row * sizeOfBoard + column;
cells[index].Column = column;
cells[index].Row = row;
cells[index].Status = zombieCell;
}
}
//Insert the new cells
try
{
gameTest.ModifyCell(cells);
}
catch (InvalidOperationException ie)
{
Assert.Fail();
}
//Check the board to be of zombie cells only
for (uint a = 0; a < sizeOfBoard; a++)
{
for (uint b = 0; b < sizeOfBoard; b++)
{
Assert.AreEqual(gameTest[a, b], zombieCell);
}
}
//Modify back to be a board of pure living cells (The happy ending!)
for (uint row = 0; row < sizeOfBoard; row++)
{
for (uint column = 0; column < sizeOfBoard; column++)
{
uint index = row * sizeOfBoard + column;
cells[index].Column = column;
cells[index].Row = row;
cells[index].Status = livingCell;
}
}
//Insert the cells
try
{
gameTest.ModifyCell(cells);
}
catch (InvalidOperationException ie)
{
Assert.Fail();
}
//Check the board for living cells only
for (uint a = 0; a < sizeOfBoard; a++)
{
for (uint b = 0; b < sizeOfBoard; b++)
{
Assert.AreEqual(gameTest[a, b], livingCell);
}
}
}
public void NextDayTest2()
{
uint gameSize = 10;
Game gameTest = new Game(gameSize);
Cell[] cells = new Cell[gameSize * gameSize];
//Set all the cells to be alive and happy
for (uint column = 0; column < gameSize; column++)
{
for (uint row = 0; row < gameSize; row++)
{
uint index = column * gameSize + row;
cells[index].Column = column;
cells[index].Row = row;
cells[index].Status = 1;
}
}
gameTest.ModifyCell(cells);
gameTest.NextDay();
//Now all cells (except those in the 4 corners) will be dead. The last 4 will still be alive
for (uint column = 0; column < gameSize; column++)
{
for (uint row = 0; row < gameSize; row++)
{
if ((column == 0 && row == 0) ||
(column == gameSize - 1 && row == 0) ||
(column == 0 && row == gameSize - 1) ||
(column == gameSize - 1 && row == gameSize - 1))
{
Assert.AreEqual(gameTest[column, row], 1);
}
else
{
Assert.AreEqual(gameTest[column, row], 0);
}
}
}
}
public void NextDayTest1()
{
uint gameSize = 10;
Game gameTest = new Game(gameSize);
Cell[] cells = new Cell[gameSize * gameSize];
//Make all cells zombies
for (uint column = 0; column < gameSize; column++)
{
for (uint row = 0; row < gameSize; row++)
{
uint index = column * gameSize + row;
cells[index].Column = column;
cells[index].Row = row;
cells[index].Status = null;
}
}
gameTest.ModifyCell(cells);
gameTest.NextDay();
//All cells are zombies, so the next day will be with just as many zombies...
for (uint column = 0; column < gameSize; column++)
{
for (uint row = 0; row < gameSize; row++)
{
Assert.AreEqual(gameTest[column,row], null);
}
}
}
public void MakeMoveTest()
{
int size = 5;
Cell[,] board = new Cell[size, size];
for (int i = 0; i < size; i++)
{
for (int j = 0; j < size; j++)
{
board[i, j] = new Cell();
board[i, j].Status = 1;
}
}
board = Processing.MakeMove(board);
// Only the corner cells should survive the first move
Assert.AreEqual(1, board[0, 0].Status);
Assert.AreEqual(1, board[0, size - 1].Status);
Assert.AreEqual(1, board[size - 1, 0].Status);
Assert.AreEqual(1, board[size - 1, size - 1].Status);
// All other cells should be dead
for (int i = 0; i < size; i++)
{
for (int j = 0; j < size; j++)
{
if (i == 0 && j == 0 || i == 0 && j == size - 1 || i == size - 1 && j == 0 || i == size - 1 && j == size - 1)
{ // Skip the corner cells
continue;
}
Assert.AreEqual(0, board[i, j].Status);
}
}
board = Processing.MakeMove(board);
// Now all cells should be dead
for (int i = 0; i < size; i++)
{
for (int j = 0; j < size; j++)
{
Assert.AreEqual(0, board[i, j].Status);
}
}
// Now placing 4 live cells with a zombie in the middle
board[0, 1].Status = 1;
board[1, 0].Status = 1;
board[1, 2].Status = 1;
board[2, 1].Status = 1;
board[1, 1].Status = null;
board = Processing.MakeMove(board);
// After first day, board[0,1] and board[2,1] has become zombies (due to the seed used in Processing)
Assert.AreEqual(null, board[0, 1].Status);
Assert.AreEqual(null, board[2, 1].Status);
// The zombie is still a zombie
Assert.AreEqual(null, board[1, 1].Status);
// board[1,0] and board[1,2] are still alive
Assert.AreEqual(1, board[1, 0].Status);
Assert.AreEqual(1, board[1, 2].Status);
board = Processing.MakeMove(board);
// Now board[1,0] and board[1,2] have died of loneliness :'(
// The zombie is still a zombie
Assert.AreEqual(null, board[0, 1].Status);
Assert.AreEqual(null, board[2, 1].Status);
Assert.AreEqual(null, board[1, 1].Status);
// board[1,0] and board[1,2] are dead
Assert.AreEqual(0, board[1, 0].Status);
Assert.AreEqual(0, board[1, 2].Status);
// Zombies should stay zombies
for (int i = 0; i < 50; i++)
{
board = Processing.MakeMove(board);
}
Assert.AreEqual(null, board[0, 1].Status);
Assert.AreEqual(null, board[2, 1].Status);
Assert.AreEqual(null, board[1, 1].Status);
}
/// <summary>
/// Will ask the user if he wants to modify any cells to a specific state.
/// If the user wants to modify any cells it will be from within here.
/// </summary>
/// <param name="max">The maximum amount of cells the user can modify</param>
private void AskUserForModifyCell(uint max)
{
uint number = 0;
bool validDefineCell = true;
while (validDefineCell)
{
System.Console.Write("How many cells do you want to define(maximum is " + max + "): ");
if (UInt32.TryParse(System.Console.ReadLine(), out number)) validDefineCell = !(number <= max);
}
if (number != 0)
{
System.Console.WriteLine("Define cells by writing [row] [column] [state] - state can be [a]live, [d]ead or [z]ombie.");
System.Console.WriteLine("An example is: 3 5 d. ");
Cell[] cells = new Cell[number];
bool invalidCellInfo;
uint column = 0;
uint row = 0;
int? state = 0;
for (int index = 0; index < cells.Length; index++)
{
invalidCellInfo = true;
while (invalidCellInfo)
{
System.Console.Write("Define cell " + index + ": ");
string[] splittedLine = System.Console.ReadLine().Split(' ');
System.Console.WriteLine();
//Interpretates what the answer
try
{
if (splittedLine.GetLength(0) != 3) throw new FormatException();
row = UInt32.Parse(splittedLine[0]);
column = UInt32.Parse(splittedLine[1]);
if (splittedLine[2] == "a") state = 1;
else if (splittedLine[2] == "d") state = 0;
else if (splittedLine[2] == "z") state = null;
else throw new FormatException();
invalidCellInfo = false;
}
catch (FormatException e)
{
System.Console.WriteLine("Not a valid input - must be like: 1 1 a - Try again:");
}
}
cells[index].Column = column;
cells[index].Row = row;
cells[index].Status = state;
}
_game.ModifyCell(cells);
System.Console.WriteLine("All wanted cells have been defined!");
}
System.Console.WriteLine();
}