// Method to create the base grid; all needed cells and walls
private IEnumerator GenerateGrid()
{
cells = new Cell[width * height]; // Definíng array storing all cell objects
Vector2[] cellPositions = new Vector2[width * height]; // Array to store all cell positions in grid
float cellPosX;
float cellPosY;
int addWidth = 0; // Variable to help indexing the cell array correctly
// Nested loop to create the grid with no walls missing
for (int j = 0; j < height; j++)
{
for (int i = 0; i < width; i++)
{
cellPosX = i * w - (w * width / 2) + w / 2; // x coordinate of current cell to be placed
cellPosY = j * w - (w * height / 2) + w / 2; // y coordinate of current cell to be placed
GameObject currBox = Instantiate(blockPrefab, new Vector3(cellPosX, cellPosY, 0), Quaternion.identity);
cellPositions[i + addWidth] = new Vector2(cellPosX, cellPosY);
currBox.transform.parent = blockHolder.transform;
// Instantiating walls for the current cell
GameObject leftwall = Instantiate(wall, new Vector3(currBox.transform.position.x - w / 2, currBox.transform.position.y, -0.01f), Quaternion.identity);
GameObject topwall = Instantiate(wall, new Vector3(currBox.transform.position.x, currBox.transform.position.y + w / 2, -0.01f), Quaternion.Euler(new Vector3(0, 0, 90)));
GameObject rightwall = Instantiate(wall, new Vector3(currBox.transform.position.x + w / 2, currBox.transform.position.y, -0.01f), Quaternion.identity);
GameObject botwall = Instantiate(wall, new Vector3(currBox.transform.position.x, currBox.transform.position.y - w / 2, -0.01f), Quaternion.Euler(new Vector3(0, 0, 90)));
// Add new cell to cell array
cells[i + addWidth] = new Cell(i, j, currBox);
// Add walls to cell object
cells[i + addWidth].leftWall = leftwall;
cells[i + addWidth].topWall = topwall;
cells[i + addWidth].rightWall = rightwall;
cells[i + addWidth].botWall = botwall;
// Parent the cell walls
cells[i + addWidth].leftWall.transform.parent = wallHolder.transform;
cells[i + addWidth].topWall.transform.parent = wallHolder.transform;
cells[i + addWidth].rightWall.transform.parent = wallHolder.transform;
cells[i + addWidth].botWall.transform.parent = wallHolder.transform;
nrOfCreatedCells++;
// Yields after genYieldLimit cells to not have the whole application window "freeze" too long for large mazes
if (nrOfCreatedCells % genYieldLimitGrid == 0)
{
yield return(null);
}
}
addWidth += width;
}
coinCreator.SetSpawnPoints(cellPositions); // Give coinCreator all cell positions (needed to position coins)
coinCreator.GenerateCoins();
StartCoroutine(DepthFirstSearch()); // Start main algorithm
}
