double byf69::average_bearing(ObjList nearby) {
double sum = 0;
for (ObjList::iterator i = nearby.begin(); i != nearby.end(); i++) {
sum += i->bearing;
}
return sum / nearby.size();
}
ObjInfo byf69::find_closest(ObjList nearby) {
ObjInfo closest{};
double dist = INFINITY;
for (ObjList::iterator i = nearby.begin(); i != nearby.end(); i++) {
if (i->distance < dist) {
closest = *i;
dist = i->distance;
}
}
return closest;
}
ObjInfo byf69::find_best_food(ObjList prey) {
ObjInfo best_food{};
/* The best eat is the best value energy_gain * eat_success_chance */
double best_energy_gain = 0;
for (ObjList::iterator i = prey.begin(); i != prey.end(); i++) {
double effective_health = this->health() - ((movement_cost(this->m_chase_speed, i->distance / this->m_chase_speed)) / start_energy);
double success_chance = eat_success_chance(effective_health * start_energy, i->health * start_energy);
double energy_gain = (i->health * start_energy) * eat_efficiency;
double effective_energy_gain = energy_gain * success_chance;
if (effective_energy_gain > best_energy_gain) {
best_food = *i;
}
}
return best_food;
}
void Craig::hunt(void) {
const String fav_food = "Algae";
hunt_event = nullptr;
if (health() == 0.0) { return; } // we died
ObjList prey = perceive(20.0);
double best_d = HUGE;
for (ObjList::iterator i = prey.begin(); i != prey.end(); ++i) {
if ((*i).species == fav_food) {
if (best_d > (*i).distance) {
set_course((*i).bearing);
best_d = (*i).distance;
}
}
}
SmartPointer<Craig> self = SmartPointer<Craig>(this);
hunt_event = new Event(10.0, [self](void) { self->hunt(); });
if (health() >= 4.0) spawn();
}