//Fill the target cell with the value "true" and expand to the surrounding area, base on the value of indexBoard
/// <param name="x"> The coordinate x of the input </param>
/// <param name="y"> The coordinate y of the input </param>
/// <param name="indexBoard"> The given indexBoard, the values of indexBoard is needed for the expansion to perform correctly</param>
// The function currently is in development
public void revealCell(int x, int y, char[,] indexBoard)
{
//Variables
//This boolean 2D array represent the cells that has been opened during the a call of this function.
//One array is generated per call and used only in that call
bool[,] ifOpened = new bool[height, width];
//This is the diameter of the cell expansion.
int expandingRadius = 0;
//A variable to check if the expansion can further occur
bool canExpand = false;
//Reveal the target cell
stateBoard[x, y] = true;
if (indexBoard[x, y] == ' ') //If the target cell is empty
{
RevealSquare(x, y);
ifOpened[x, y] = true; //Set the origin of the expansion to true, allowing the expansion to occur
canExpand = true;
}
//Revealing the surrounding cells
while (canExpand) // stop expanding when the radius reach half of the height or width
{
expandingRadius++; //Expand the radius
canExpand = false;
//Looping through the area within radius
for (int i = x - expandingRadius; i <= x + expandingRadius; i++)
{
for (int j = y - expandingRadius; j <= y + expandingRadius; j++)
{
if ((i < height) && (j < width) && (i >= 0) && (j >= 0))
{
//Check the 8 surrounding cell to know if there were any cells opened (satisfied if there was)
//Check if this cells is empty or not (satisfied if empty)
//Check if this cells is opened or not (satisfied if not opened yet)
//If all the conditions are satisfied, reveal it and its 8 surrounding cells
if (MathFunc.CheckSurrounding(ifOpened, height, width, i, j) && indexBoard[i, j] == ' ' &&
ifOpened[i, j] == false)
{
RevealSquare(i, j);
ifOpened[i, j] = true; //Mark the cell as opened
//If there is at least 1 cell opened in this loop, the expansion can continue
//Otherwise, it cannot
canExpand = true;
}
}
}
}
}
}