void random(Net<SIZE> & subject) {
for (int c = 0; c < SIZE; ++c) {
for (int r = 0; r < SIZE; ++r) {
if (subject.hasSynapse(c, r)) {
subject[c][r] = randMax(2) - 1.;
}
}
}
}
void mutate(Net<SIZE> & subject, double rate) {
for (int c = 0; c < SIZE; ++c) {
for (int r = 0; r < SIZE; ++r) {
if (subject.hasSynapse(c, r) && chance(rate)) {
if (chance(0.5)) {
subject[c][r] += rand() - .5;
} else {
subject[c][r] = randMax(2) - 1.;
}
}
}
}
}
Net<SIZE> cross(const Net<SIZE> & mother, const Net<SIZE> & father) {
const Net<SIZE> * parents[2] = {&mother, &father};
Net<SIZE> child;
int inheritence = 1;
for (int c = 0; c < SIZE; ++c) {
for (int r = 0; r < SIZE; ++r) {
if (mother.hasSynapse(c, r)) {
// alternate parents
child[c][r] = (*parents[inheritence = !inheritence])[c][r];
}
}
}
return child;
}