Thread: create a pattern from center to edge in a 2d array

Originally Posted by ryuti

Now can you please guide me. You said before there are 4 possible starting cells. I would like to point to all of them and choose the one that does no contain a blank space and after how do i move to the next cell to sort out the maze?

Simply keep track of where you are, and move a direction by increasing or decreasing the row or column (x or y) coordinate. Since you have an even number of rows and columns, you cannot have an exact middle, so cut that in half, and check the four for whatever you need.


Quzah.

Code:

size_t here_x, here_y;

/* set the starting point randomly between 5 and 6 */
here_x = 5 + (rand() % 2);
here_y = 5 + (rand() % 2);

/* move north */
here_x--;
cellvalue = maze[ here_x ][ here_y ];

/* move east */
here_y++;
cellvalue = maze[ here_x ][ here_y ];

/* move south */
here_x++;
cellvalue = maze[ here_x ][ here_y ];

/* move west */
here_y--;
cellvalue = maze[ here_x ][ here_y ];

Quzah.