New Projectiles class

Refactor of Bullet class
Different method of shooting.

sources/Projectile.cpp

@@ -0,0 +1,23 @@
+#include "../headers/Projectile.h"
+
+Projectile::Projectile(float x, float y, sf::Texture &texture) {
+    position.x = x;
+    position.y = y;
+    outOfBounds = false;
+    sprite.setTexture(texture);
+    sprite.setOrigin(sprite.getLocalBounds().width/2, sprite.getLocalBounds().height/2);
+    sprite.setPosition(x, y);
+    speed = -10.0f;
+}
+
+sf::Sprite &Projectile::getSprite() {
+    return sprite;
+}
+
+void Projectile::setSpeed(float speed) {
+    this->speed = speed;
+}
+
+bool Projectile::isOutOfBounds() const {
+    return outOfBounds;
+}