tweaked some parameters and remove debugging console logs

src/bird.cpp

@@ -95,12 +95,6 @@ void Birds::draw(sf::RenderTarget &target, sf::RenderStates states) const {
     for (auto &bird: collection) {
         if (!bird.dead) {
             target.draw(bird, states);
-
-            // a note to self : for debugging purposes / remove later
-            sf::CircleShape test(5.f, 3);
-            test.setFillColor(sf::Color::Yellow);
-            test.setPosition(Bird::target_gap);
-            target.draw(test, states);
         }
     }
 }

src/bird.hpp

@@ -53,7 +53,7 @@ struct Bird : public sf::RectangleShape {
 };
 
 struct Birds : public sf::Drawable {
-    static constexpr size_t INITIAL_POPULATION = 60;
+    static constexpr size_t INITIAL_POPULATION = 512;
 
     std::vector<Bird> collection;
     size_t            population;

src/ffnn.hpp

@@ -16,8 +16,8 @@ struct FFNN {
     static constexpr size_t HIDDEN = 5;
     static constexpr size_t OUTPUT = 1;
 
-    /// \brief 20% chance to mutate a weight.
-    static constexpr size_t MUTATION_CHANCE_THRESHOLD = 20;
+    /// \brief 30% chance to mutate a weight.
+    static constexpr size_t MUTATION_CHANCE_THRESHOLD = 30;
 
     /// \brief 50% chance to choose from parentA's weight.
     static constexpr size_t WEIGHT_SELECTION_CHANCE_THRESHOLD = 50;

src/genetic_algo.cpp

@@ -49,20 +49,7 @@ void GeneticAlgorithm::rank_fitness(Birds &birds) {
         bird.fitness = base_gap_close_fitness + bird.time_lived * 20.f;
     }
 
-    // sort birds from greatest to least fitness.
-    std::cout << "unsorted fitness :\n";
-    for (auto &bird: birds.collection) {
-        std::cout << "  bird.fitness = " << bird.fitness << '\n';
-    }
-    std::cout << "\n";
-
     std::sort(birds.collection.begin(), birds.collection.end(), [](Bird &a, Bird &b) { return a.fitness > b.fitness; });
-
-    std::cout << "sorted fitness :\n";
-    for (auto &bird: birds.collection) {
-        std::cout << "  bird.fitness = " << bird.fitness << '\n';
-    }
-    std::cout << "\n\n";
 }
 
 void GeneticAlgorithm::apply_mutations(Birds &birds) {
@@ -72,21 +59,8 @@ void GeneticAlgorithm::apply_mutations(Birds &birds) {
         birds.collection[i].apply_random_mutation();
     }
 
-    // randomly select mutated bad birds to keep.
-    std::cout << "sorted bad bird fitness :\n";
-    for (auto &bird: birds.collection) {
-        std::cout << "  bird.fitness = " << bird.fitness << '\n';
-    }
-    std::cout << "\n";
-
     std::shuffle(birds.collection.begin() + fit_size, birds.collection.end(), FFNN::engine);
 
-    std::cout << "shuffled bad bird fitness :\n";
-    for (auto &bird: birds.collection) {
-        std::cout << "  bird.fitness = " << bird.fitness << '\n';
-    }
-    std::cout << "\n";
-
     // breed the good birds to fill the missing population.
     constexpr size_t unfit_size = (Birds::INITIAL_POPULATION - fit_size) * MUTATION_KEEP_BAD;
     constexpr size_t spliced_size = fit_size + unfit_size;

src/pipe.hpp

@@ -52,7 +52,7 @@ struct PipePair : public sf::Drawable {
     static constexpr float GAP = 110.f;
 
     /// top pipe's minimum height.
-    static constexpr float MIN_HEIGHT = static_cast<float>(WINDOW_HEIGHT) / 24.f;
+    static constexpr float MIN_HEIGHT = static_cast<float>(WINDOW_HEIGHT) / 40.f;
 
     /// top pipe's maximum height.
     static constexpr float MAX_HEIGHT = static_cast<float>(WINDOW_HEIGHT) - MIN_HEIGHT - GAP;