New Projectiles class

Refactor of Bullet class
Different method of shooting.

sources/Actor.cpp

@@ -30,7 +30,7 @@ std::vector<Bullet> &Actor::getBullets() {
 
 void Actor::updateBullets() {
     for (auto& bullet : bullets) {
-        if(bullet.getStatus()) {
+        if(bullet.isOutOfBounds()) {
             bullets.erase(bullets.begin());
         }
     }