Add randomization key

conway.c

@@ -6,6 +6,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <sys/ioctl.h>
+#include <sys/random.h>
 #include <termios.h>
 #include <unistd.h>
 
@@ -164,6 +165,11 @@ int main(int argc, char **argv) {
             case 'q': goto done;
             case 'p': paused ^= 1; break;
             case 'c': memset(buffers[flipflop], 0, W*H); break;
+            case 'r':
+                getrandom(buffers[flipflop], W*H, 0);
+                for (int i = 0; i < W*H; i++)
+                    buffers[flipflop][i] &= 0x1;
+                break;
             case ' ': draw_mode ^= 1; break;
             case '<': { // Mouse dragging/clicks
                 int buttons = 0, x = 0, y = 0;