Messages

1

General discussions / SFML 2.0 vector of drawable

« on: January 26, 2012, 12:23:17 am »

Thank you very much for this complete and clear example.

I've made one more step into c++

I've also read :
http://alp.developpez.com/tutoriels/type-erasure/ (in french)
http://www.cplusplus.com/forum/articles/18756/ (in english)

but your little example is far clearer for me.  

Olivier/Virelio

2

General discussions / SFML 2.0 vector of drawable

« on: January 25, 2012, 01:15:07 pm »

Hello !

via type erasure

How to do that ? I know you have to use template but I do not see how to write such  class... If I well understand, it's a way to create an common ancestor afterwards. Do I mistake myself ?

thanks in advance,

Olivier/Virelio

3

General discussions / SFML 2.0 vector of drawable

« on: January 23, 2012, 10:57:26 pm »

Back,

Laurent, Don't change anything it's perfect and incredibly easy !

You can mix all together if you want to draw with polymorphism. You can apply complex transformations very easily with sf::transform or sf::transformable appart of rendering.

I have to think how to rewrite my code but it sure give me more clearness...


 

Olivier/Virelio

4

General discussions / SFML 2.0 vector of drawable

« on: January 23, 2012, 10:25:52 pm »

Ok Laurent, I have to dive deeper in the API.

I glanced on... I'll test some basic. I'll be back to tell you my feeling.

thank you for your workssssss !

5

General discussions / SFML 2.0 vector of drawable

« on: January 23, 2012, 09:20:58 pm »

Hi !

I agree with you. Polymorphism is a powerfull C++ feature.

In SFML, you should use basic class to make your own while keeping the easy way to move and render. I think SFML is easy to use and manage except this little minus  :?

sf::Whatever only need one empty constructor and a virtual destructor... Am I right ?

best regard,

Olivier/Virelio

6

General discussions / SFML 2.0 vector of drawable

« on: January 23, 2012, 07:33:13 pm »

Thanks for your (as usual) quick answer,

I used to add all my "drawables" and inherited objects in one vector ; then I can test each in queue and draw them without knowing if it's a text or a sprite. I have a vector<sf::Drawable*> and the right "render" was called.


I think that this class diagram is convenient to handle all "drawable". (You could have BaseDrawable and Drawable). I would like to inherite from "sf::Whatever"
You have, at least, to give a position to each "Drawable" you plan to draw, so Transformable is quite always here (unless you use fixed position VertexArray)

So what is your thought about this ?

Olivier/Virelio

7

General discussions / SFML 2.0 vector of drawable

« on: January 23, 2012, 08:40:27 am »

Hi,

I was looking at the new API of SFML 2 graphics. It looks nice.

I used to manage text, sprite and shape with std::vector<sf::Drawable*>. Now there is no more common ancestor because they inherite from sf::Transformable too.

Is there a way to do such vector organisation with SFML 2.0 ?

best regard,