add little parallax

sources/Component/Tag/TagComponent.hpp

@@ -54,6 +54,7 @@ namespace BBM
 	constexpr const char Blowable[] = "Blowable";
 	// interact with visual features like camera
 	constexpr const char Player[] = "Player";
+	constexpr const char Background[] = "Background";
 	constexpr const char Unbreakable[] = "Unbreakable";
 	constexpr const char Breakable[] = "Breakable";
 	constexpr const char Hole[] = "Hole";

sources/Map/Map.cpp

@@ -338,7 +338,7 @@ namespace BBM
 		if (rnd > 0.98)
 			return HOLE;
 		if (rnd > 0.25)
-			return BREAKABLE;
+			return NOTHING;
 		return NOTHING;
 	}
 

sources/Models/Vector2.hpp

@@ -68,6 +68,13 @@ namespace BBM
 			return *this;
 		}
 
+		template<typename T2>
+		Vector2<T> operator-(const Vector2<T2> &vec) const
+		{
+			return Vector2<T>(this->x - vec.x, this->y - vec.y);
+		}
+
+
 		template<typename T2>
 		Vector2<T> &operator*=(T2 d)
 		{

sources/Runner/GameScene.cpp

@@ -46,7 +46,8 @@ namespace BBM
 			.addComponent<Drawable2DComponent, RAY2D::Text>("", 60, RAY::Vector2(), ORANGE);
 		scene->addEntity("background image")
 			.addComponent<Drawable2DComponent, RAY::Texture>(true, "assets/background.png", false)
-			.addComponent<PositionComponent>();
+			.addComponent<PositionComponent>()
+			.addComponent<TagComponent<Background>>();
 		MapGenerator::loadMap(16, 16, MapGenerator::createMap(16, 16, hasHeights), scene);
 		return scene;
 	}

sources/System/Renderer/CameraSystem.cpp

@@ -74,6 +74,12 @@ namespace BBM
 		cam.target += (newCameraPos.abs() - pos.position.abs()) / 10;
 		newCameraPos.y = maxDist;
 		newCameraPos.z -= 1;
+		Vector3f pos2d(pos.position.abs().x,0, pos.position.abs().z);
+		Vector3f newPos2d(newCameraPos.abs().x, 0, pos.position.abs().z);
+		for (auto &[entity, backPos, _] : this->_wal.getScene()->view<PositionComponent, TagComponent<Background>>()) {
+			backPos.position -= (newPos2d - pos2d) / 10;
+		}
 		pos.position += (newCameraPos.abs() - pos.position.abs()) / 10;
+
 	}
 }