private void button1_Click(object sender, EventArgs e)
{
if (int.TryParse(textBox1.Text, out inputInt))
{
if (inputInt == 0)
{
string message = "Cannot use 0 as integer. Please Enter another Integer number.";
string caption = "Error Detected in Input";
MessageBoxButtons buttons = MessageBoxButtons.OK;
DialogResult result;
result = MessageBox.Show(message, caption, buttons);
//if (result == DialogResult.OK)
//{
//}
}
else
{
cols = inputInt;
rows = inputInt;
c_width = Canvas.Width / cols;
grid = new Spot[cols, rows];
//building grid
for (int i = 0; i < cols; i++)
{
for (int j = 0; j < rows; j++)
{
grid[i, j] = new Spot(i, j);
}
}
currentSpot = grid[0, 0];
while (true)
{
currentSpot.visited = true;
//Using recursive backtracker algorithm
//https://en.wikipedia.org/wiki/Maze_generation_algorithm#Recursive_backtracker
//step 1
next = currentSpot.CheckNeighbors(grid);
if (next != null)
{
next.visited = true;
//step 2
stack.Push(currentSpot);
//Console.WriteLine($"stack count is {stack.Count}");
//step 3
RemoveWalls(currentSpot, next);
//step 4
currentSpot = next;
//Console.WriteLine($"currentSpot is {currentSpot.i} and {currentSpot.j}");
}
else if (stack.Count > 0)
{
currentSpot = stack.Pop();
//Console.WriteLine($"pop a stack and count is {stack.Count}");
//Console.WriteLine($"currentSpot after pop is {currentSpot.i} and {currentSpot.j}");
}
else if (next == null)
{
break;
}
//Call DrawGrid here (inside while loop) when we want to see how it works step by step. Really slow down the program
//because we used 2d array and how each element is accessed in 2d array(?) and how WF implements draw graphics.
//DrawGrid();
}
//Call DrawGrid outside while loop when the maze has already been generated. Really fast visualization
DrawGrid();
}
}
else
{
string message = "Please Enter an Integer number.";
string caption = "Error Detected in Input";
MessageBoxButtons buttons = MessageBoxButtons.OK;
DialogResult result;
result = MessageBox.Show(message, caption, buttons);
}
}
