void generate() {
if (c == null) {
stringBuf[x[0]][x[1]] = v;
for (int i = 0; i < 2; i++) {
for (int j = 0; j < dim[i]; j++) {
x[i]++;
char current = stringBuf[x[0]][x[1]];
if (current == '-' || current == '|') stringBuf[x[0]][x[1]] = '*';
else stringBuf[x[0]][x[1]] = walls[i];
}
x[i] -= dim[i];
}
} else {
for (Node child : c) {
child.generate();
for (int i = 0; i < 2; i++) x[i] += (v == i ? child.dim[i] : 0);
}
for (Node child : c) for (int i = 0; i < 2; i++) x[i] -= (v == i ? child.dim[i] : 0);
}
}
