Fixed target initialization still using sf::Vector2i

Forgot to move manhattanDistance to .cpp

src/Entity.cpp

@@ -21,7 +21,7 @@ Entity::Entity(int x, int y, EntityType type, sf::Texture* texture, int width, i
 
     currentState = State::Idle;
     nextState = State::Idle;
-    target = sf::Vector2i(shape.getPosition());
+    target = pro_maat::GridPos(x,y);
     nextTarget = target;
 }