/* Look at all the bugs in the bug_list. For each bug
* that has enough health to reproduce, reproduce a new bug.
* Put the new bug in the same square and have it head in the
* same direction.
*
* Give both the new bug and the old bug 1/2 the energy of the
* old bug.
*
* Mutate the genes of the new bug as follows. Choose two genes
* at random. Increment one of those genes (by one) and decrement
* the other gene (by one).
* YOU MUST ensure
* 1. that no genes ever get smaller than zero
* 2. the total of the eight genes is always GENE_TOTAL
*
* Be sure to put the new bug in the bug_list (no need to update
* the world, since you have two bugs in the same square anyway).
*/
void reproduceBugs(void) {
int num_bugs = bug_list.size();
for (int k = 0; k < num_bugs; k += 1) {
if (bug_list[k].health > REPRODUCE_HEALTH) {
/* Make the new bug. */
Bug b = bug_list[k];
b.health /= 2;
b.generation++;
b.age = 0;
mutateGenes(b.genes);
bug_list[k].health /= 2;
/* Update global statistics based on the new genes in b */
total_straight += b.genes[0];
total_right += b.genes[1]+b.genes[2]+b.genes[3];
total_left += b.genes[5]+b.genes[6]+b.genes[7];
total_back += b.genes[4];
/* Add b to the end of the global bug list */
bug_list.push_back(b);
}
}
}
/* COMMENTS:
<param>
* The big if/else statement is to add variety to the mating (if the pop is > 10 then mate with the top 8. pop > 6 mate with top 4, etc..).
* This whole function is not taking into account of gender's or position so it will need to be re-written once we have two seperate data structures,
* one with males and the other with females. Also will need to take into account of proximity once we get there.
* This also removes older animals; Maybe should move that to selection since it really isn't a part of the combination procedure.
</param>
*/
void GA::combination(std::vector<std::shared_ptr<Animal>> &pop, int animalNum, int currentGen){
char sex;
GAUtils gu = GAUtils();
if (pop.size() > 1) {
sex = gu.randSex();
std::shared_ptr<Animal> mom, dad;
int dRand, mRand;
if (pop.size() >= 8) {
dRand = gu.randIntGen(6);
mRand = gu.randIntGen(6);
dad = std::move(pop[dRand]);
pop.erase(pop.begin() + dRand);
mom = std::move(pop[mRand]);
pop.erase(pop.begin() + mRand);
}
else if (pop.size() >= 7) {
dRand = gu.randIntGen(5);
mRand = gu.randIntGen(5);
dad = std::move(pop[dRand]);
pop.erase(pop.begin() + dRand);
mom = std::move(pop[mRand]);
pop.erase(pop.begin() + mRand);
}
else if (pop.size() >= 6) {
dRand = gu.randIntGen(4);
mRand = gu.randIntGen(4);
dad = std::move(pop[dRand]);
pop.erase(pop.begin() + dRand);
mom = std::move(pop[mRand]);
pop.erase(pop.begin() + mRand);
}
else if (pop.size() >= 5) {
dRand = gu.randIntGen(3);
mRand = gu.randIntGen(3);
dad = std::move(pop[dRand]);
pop.erase(pop.begin() + dRand);
mom = std::move(pop[mRand]);
pop.erase(pop.begin() + mRand);
}
else if (pop.size() >= 4) {
dRand = gu.randIntGen(2);
mRand = gu.randIntGen(2);
dad = std::move(pop[dRand]);
pop.erase(pop.begin() + dRand);
mom = std::move(pop[mRand]);
pop.erase(pop.begin() + mRand);
}
else if (pop.size() >= 3) {
dRand = gu.randIntGen(1);
mRand = gu.randIntGen(1);
dad = std::move(pop[dRand]);
pop.erase(pop.begin() + dRand);
mom = std::move(pop[mRand]);
pop.erase(pop.begin() + mRand);
}
else {
dad = std::move(pop[0]);
pop.erase(pop.begin());
mom = std::move(pop[0]);
pop.erase(pop.begin());
}
int cp = (gu.randIntGen(mom->getGeneSize()));
std::vector <float> childGenes;
std::vector<float> dadGenes = dad->getGenes();
std::vector<float> momGenes = mom->getGenes();
for (int i = 0; i < dadGenes.size(); i++){
childGenes.push_back((dadGenes[i] + momGenes[i]) / 2.0);
}
//for (int i = cp; i < mom->getGeneSize(); i++){
// childGenes.push_back(momGenes[i]);
//}
bool hasMutation = false;
if (gu.randIntGen(100) <= 25) {
mutateGenes(childGenes);
hasMutation = true;
}
float fn = gu.fitnessSingle(childGenes);
std::shared_ptr<Animal> child(new Animal(dad->getName()));
std::string cTag;
child->setFitness(fn);
child->setGenes(childGenes);
child->setSex(sex);
child->setGeneration(currentGen);
child->setTypeID(mom->getTypeID());
child->setPosition(mom->getXPos(), mom->getYPos(), 0);
if (hasMutation)
cTag.append(mom->getName() + "_" + std::to_string(currentGen) + "_" + std::to_string(animalNum + 1) + "m");
else
cTag.append(mom->getName() + "_" + std::to_string(currentGen) + "_" + std::to_string(animalNum + 1));
child->setTag(cTag);
combination(pop, animalNum+1, currentGen);
pop.push_back(std::move(mom));
pop.push_back(std::move(dad));
pop.push_back(std::move(child));
}
}
