Messages

1

General / SFML Precision (C++)

« on: September 28, 2008, 01:11:31 am »

Does one really need this precision for sprite-placement-management and such?

And I guess that one argument against using doubles instead fo float is
the size where float takes up 4 bytes and doubles uses 8 bytes.

2

General / Help *lol*

« on: September 25, 2008, 08:11:19 pm »

:cry:
i never understood virtual destructors, could u tell me how one could work with sf::shape?

edit: i do not understand ANY destructor

By making the Base class Destructor virtual, both the destructors will be called in order.

One thing im confused about is that the shape-class dosnt declare
a default constructor.
Dosnt that mean that the shape-class gets a "regular" non-virtual destructor?

Edit:
Think of the destructor as the function that gets called when the object gets
destroyed or gets out of scope.

Example:

Code: [Select]

class AClass
{
public:
AClass(); // Constructor
~AClass(); // Destructor
};


int main(int argc, char** argv)
{
AClass* testClass = new AClass; // Constructor gets called

delete testClass; // Destructor gets called

return 0;
}

or

int main(int argc, char** argv)
{
AClass testClass; // Constructor gets called

return 0; // Destructor gets called.
}

Class Reference

3

General / Help *lol*

« on: September 25, 2008, 05:05:08 pm »

The overhead for calling one extra function is so small for simple games that
you wont notice it anyways.

But my 2 cents.
Try the both techniques to see what suits you the most.

4

General / Help *lol*

« on: September 25, 2008, 04:45:29 pm »

You would probably want to send a reference instead of a copy of the shape
for performance.

5

General / Help *lol*

« on: September 25, 2008, 04:24:08 pm »

Have a "get-function" in the Bat-class?

Ex:

Code: [Select]

class Bat
{
public:
...

sf::Shape getShape() { return m_shapeX; }

private:
sf::Shape m_shapeX;
}


sf::RenderWindow App;

...

Bat left;
App.Draw(left.getShape());

PS.
Havn't tested to compile this code.
But it's should give some kind of idea anyways.

6

General / play video files

« on: September 25, 2008, 12:31:37 pm »

Not nativly with SFML.
But this tutorial, while in french still has english comments, might be usefull?
http://www.sfml-dev.org/wiki/fr/tutoriels/integrervideo

7

Window / sf::Input

« on: September 09, 2008, 06:14:21 am »

you can do that with Event class

Ahh, thats true.
Tho im still not getting hang of how to implement a check for a single keypress.
What I'm meaning with that is that i want to seperate
onKeyPress and onKeyDown.
Hard to explain and definitive in the wrong forum-section for this kind of topic.

8

Window / sf::Input

« on: September 08, 2008, 11:27:22 pm »

I'm looking for the feature to not only read out if a key is pressed (with App.GetInput()).

In my utopia the Input-class would have the following functions:
IsKeyDown (only returns true the first time a key is being pressed)
IsKeyPressed (returns true every time a key is pressed)
IsKeyReleased (returns true when and only when the key has been released)

I have tried to "simulate" this by myself but without success.
If anyone could help me simulate this or point me in the right direction
I would happily be satisfied with that.

Best regards.

9

Feature requests / Rotating views

« on: April 23, 2008, 10:19:02 pm »

Is this hard/impossible to add to SFML?

Or is it maybe easy to do this by the user with the
help of OGL?