Messages

1

Graphics / Nested drawables to manipulate them toghether, sf hierarchy?

« on: September 26, 2009, 07:30:23 pm »

I downloaded the stable 1.5 like a month ago.

2

Graphics / Nested drawables to manipulate them toghether, sf hierarchy?

« on: September 26, 2009, 12:19:42 am »

I found a "layer" class in the wiki, which I copy pasted, and did some testing but I'm not getting the inherited translation.

This is layer class:

Code: [Select]

#include <vector>
#include <SFML/Graphics.hpp>

typedef std::vector<sf::Drawable*> FrameSet;
typedef FrameSet::const_iterator itFrame;

class Layer : public sf::Drawable, public FrameSet {
 public :
Layer(  const sf::Vector2f& Position = sf::Vector2f(0, 0),
                const sf::Vector2f& Scale = sf::Vector2f(1, 1),
                float Rotation = 0.f,
                const sf::Color& Col = sf::Color(255, 255, 255, 255));
virtual ~Layer();

virtual void Render(sf::RenderTarget& Target) const;
};

Layer::Layer(   const sf::Vector2f& Position,
                const sf::Vector2f& Scale,
                float Rotation,
                const sf::Color& Col) : sf::Drawable(Position,Scale,Rotation,Col) {
};
 
Layer::~Layer(){
};

void Layer::Render(sf::RenderTarget& Target) const {
    for( itFrame i = begin() ;i!=end();i++)
            Target.Draw(*(*i));
};


The main:

Code: [Select]


int main(){
    sf::RenderWindow App(sf::VideoMode(800, 600, 32), "X");

    sf::Image image;
    image.LoadFromFile("x.png");

    sf::Sprite * sp = new sf::Sprite();
    sp->SetImage(image);

    Layer layer;
    layer.push_back(sp);
    layer.SetPosition(10,10); //<-Should move the sprite right?

    while (true){
        App.Clear();
        layer.Render(App);        
        App.Display();
    }
}


The layer doesn't seem to move the sprite...

3

Graphics / Nested drawables to manipulate them toghether, sf hierarchy?

« on: September 25, 2009, 09:21:29 pm »

Thanks a lot. It was not even sfml related, just simple c++ inheritance feature... :oops:

4

Graphics / Nested drawables to manipulate them toghether, sf hierarchy?

« on: September 25, 2009, 10:09:45 am »

I'm trying to do some kind of generic class made of different sorts of drawables so I can manipulate them all at once, (like ogre's scenenodes that can be attached in a hierarchy way)

Example:
Child is attached to Father:
a) father moves/rotates/etc child moves/rotates/etc.
b) child moves/rotates/etc father doesn't move.

To keep it simple I've decided to do a vector of drawables, and to have an empty sprite to be the "father" of all, so the draw method is like:

Code: [Select]

   iterator = mDrawables.begin();
    while( iterator != mDrawables.end() ) {
        renderWindow->Draw(

            /*This is the messy part, how do I change its position/rotation to mantain the relative distance
            but adding its father position (without accumulating) (got it?)*/
            /*This obviously doesn't work but it shows the idea.*/
            (*mDrawables) + father->GetPosition()
            (*mDrawables) + father->GetRotacion()
        );
        ++iteradorDibujables;
    }
Can somebody help me with that?, the problem I'm getting is that I can't do a momentary change of position/rotation just to render...

Is there a better way of doing this supported by sfml?

Thanks

5

General discussions / animation library, spline, spring, keyframe tool

« on: September 15, 2009, 11:23:23 pm »

Ok, but I was looking for something like the keyframe tool of flash.
Say you wanted to do a " you win" text animation, normally in almost every game I know a cool text comes in, in a very dynamic way, changing its scale, opacity and moving. In flash I would normally do a keyframe of a small invisible sprite off the screen, move it to the position I want, and tell flash how do I want to do the interpolation, linear, smooth etc...
I'm finding myself doing animations by code which is not the most artistic way. I know this maybe is not called sprite animation but I don't know how to call that.
Doing one text animation, doesn't look hard enough, but when trying to do complex stuff with lots of moving things a tool like this is almost mandatory, or not?

6

General discussions / animation library, spline, spring, keyframe tool

« on: September 15, 2009, 10:35:02 pm »

bump  

7

General discussions / animation library, spline, spring, keyframe tool

« on: September 11, 2009, 07:48:18 pm »

Hi, I was wondering how do you guys do sprite animations? I want to start doing cool ui/sprite animations, with a keyframe system in which I can create custom interpolations, something like adobe flash. I imagine this is a need of many games, so which tools do you guys use to do this? Ive heard people doing custom tools with a xml file system accelerated with the gpu. What do you guys think?

8

General / Problems building "Using CEGUI In SFML" tutorial c

« on: July 29, 2009, 01:42:12 am »

I have made the sfml cegui tutorial work on vs2008 but my buffer is not cleaning up, so if I move the window I paint like millions of more windows, same happens with the mouse pointer...

EDIT: mWindow.Clear(); was missing...