Adjust circle radius and position limits

src/Chromosome.cpp

@@ -109,17 +109,23 @@ void Chromosome::draw(sf::RenderTarget& target, sf::RenderStates states) const
 }
 
 
+size_t Chromosome::length()
+{
+	return this->genes.size();
+}
+
+
 Chromosome::Gene Chromosome::randomGene()
 {
-	float max_radius = std::min(Chromosome::size.x, Chromosome::size.y)/2;
-	std::uniform_real_distribution<> xdist(-max_radius, Chromosome::size.x + max_radius);
-	std::uniform_real_distribution<> ydist(-max_radius, Chromosome::size.y + max_radius);
+	float max_radius = std::min(Chromosome::size.x, Chromosome::size.y)/4;
+	std::uniform_real_distribution<> xdist(0, Chromosome::size.x);
+	std::uniform_real_distribution<> ydist(0, Chromosome::size.y);
 	std::uniform_real_distribution<> rdist(0, sqrt(max_radius));
 	std::uniform_int_distribution<> colordist(0, 255);
 	
 	sf::Vector2f position(xdist(*Chromosome::re), ydist(*Chromosome::re));
 	float radius = (pow(rdist(*Chromosome::re), 2));
-	sf::Color color(colordist(*Chromosome::re), colordist(*Chromosome::re), colordist(*Chromosome::re));
+	sf::Color color(colordist(*Chromosome::re), colordist(*Chromosome::re), colordist(*Chromosome::re), 50);
 	
 	Chromosome::Gene gene;
 	gene.position = position;
@@ -133,19 +139,19 @@ Chromosome::Gene Chromosome::randomGene()
 void Chromosome::mutateGene(Gene& gene)
 {
 	std::uniform_int_distribution<> booldist(0, 1);
-	float max_radius = std::min(Chromosome::size.x, Chromosome::size.y)/2;
+	float max_radius = std::min(Chromosome::size.x, Chromosome::size.y)/4;
 	
 	if (booldist(*Chromosome::re)) {  // position
 		std::normal_distribution<> posdist(0, Chromosome::stddev_position);
 		gene.position.x = std::clamp<float>(
 			gene.position.x + posdist(*Chromosome::re)*max_radius,
-			-max_radius,
-			Chromosome::size.x + max_radius
+			0,
+			Chromosome::size.x
 		);
 		gene.position.y = std::clamp<float>(
 			gene.position.y + posdist(*Chromosome::re)*max_radius,
-			-max_radius,
-			Chromosome::size.y + max_radius
+			0,
+			Chromosome::size.y
 		);
 	}
 	

src/Chromosome.hpp

@@ -24,6 +24,8 @@ public:
 	
 	virtual void draw(sf::RenderTarget& target, sf::RenderStates states) const;
 	
+	size_t length();
+	
 protected:
 	struct Gene
 	{

src/main.cpp

@@ -177,14 +177,24 @@ int main() {
 			// Exit the app when a key is pressed
 			if (event.type == sf::Event::KeyPressed) {
 				father = Chromosome();
-				mother = Chromosome();
-				for (int i=0; i<100; ++i) {
+// 				mother = Chromosome();
+				for (int i=0; i<1000; ++i) {
 					father.mutate();
+// 					mother.mutate();
+				}
+				mother = father;
+				for (int i=0; i<20; ++i) {
 					mother.mutate();
 				}
 				child = Chromosome(father, mother);
 				monster = child;
 				monster.mutate();
+				
+				std::cout << "----------SIZES----------" << std::endl;
+				std::cout << "father size:  " << father.length() << std::endl;
+				std::cout << "mother size:  " << mother.length() << std::endl;
+				std::cout << "child size:   " << child.length() << std::endl;
+				std::cout << "monster size: " << monster.length() << std::endl;
 			}
 		}