Topics

16

Graphics / what is character size?

« on: June 08, 2013, 04:09:17 am »

Is character size the length of a character's height in pixel?

17

SFML projects / Bomberman clone

« on: January 19, 2013, 12:56:38 am »

This is a Bomberman clone that I made.
Jumping right into this kind of advanced game was certainly not a good idea after making only Pong and Snake.... Really this game is buggiest program I've ever made in my life... Anyways, I was getting tired and frustrated so I just want to wrap this project up and finished in hurry.
Unfortunately I do not have a binary version because things started to break when I changed all the resource path to relative path.

18

Feature requests / An overload for sf::RectangleShape::setSize that takes 2 float argument

« on: January 06, 2013, 07:31:18 pm »

I see that sf::RectangleShape::setSize() only takes a sf::Vector2f object.
Can you make an overload that takes 2 float arguments?

It's kind of looking ugly in my code to construct a temorary Vector2f

19

General / A crash in my button class

« on: January 02, 2013, 04:08:27 am »

Here's my button class

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

class Button
{
public:
        static void init(sf::RenderWindow & window);
private:
        static sf::RenderWindow * window;
        sf::Text text;
        std::function<void(void)>  onEnter;
        std::function<void(void)>  onExit;
        std::function<void(void)>  onClick;
public:
        Button(const char * string, sf::Font & font, sf::Color color, sf::Vector2f position, unsigned int size);
        ~Button();
        sf::Text & getText(){return text;}
        void draw();
        void update();
        void connect(std::function<void(void)>  onEnter, std::function<void(void)>  onExit ,std::function<void(void)>  onClick);
};
#include "Button.h"
#include <SFML/Window.hpp>

sf::RenderWindow * Button::window =nullptr;

void Button::init(sf::RenderWindow & window_)
{
        window=&window_;
}

Button::Button(const char * string, sf::Font & font, sf::Color color, sf::Vector2f position, unsigned int size):text(string, font, size)
{
        text.setColor(color);
        text.setPosition(position);
}

Button::~Button()
{
}

void Button::update()
{
        sf::Vector2i mousePos=sf::Mouse::getPosition(*window);
        float x1=text.getGlobalBounds().left;
        float x2=x1+text.getGlobalBounds().width;
        float y1=text.getGlobalBounds().top;
        float y2=y1+text.getGlobalBounds().height;
        if(x1<=mousePos.x && mousePos.x<=x2 && y1<=mousePos.y && mousePos.y<=y2)
        {
                (onEnter)();
                if(sf::Mouse::isButtonPressed(sf::Mouse::Button::Left))
                        (onClick)();
        }
        else
               (onExit)();
}

void Button::connect(std::function<void(void)> onEnter, std::function<void(void)>  onExit,  std::function<void(void)>  onClick)
{
        this->onEnter=onEnter;
        this->onExit=onExit;
        this->onClick=onClick;
}

void Button::draw()
{
        window->draw(text);
}
 

crash occurs in Button::draw() method.
Is there something wrong with my code?

20

SFML projects / SFML Resource Wrapper (Update)

« on: November 10, 2012, 04:18:34 am »

I think someone already put something similar to this, but I wanted to share.
I wrote a simple resource wrapper for sf::Texture, sf::Music, sf::Font and sf::Sound
This does reference counting so that you will never load a same resource twice
Download it here:https://sourceforge.net/projects/kiwongames/files/SFML%20resource%20wrapper/

Update: 1.1
Added FontResource.
Fixed internal design using templates and inheritance. But no change in public interface.

There are 4 Resource classes.
Each of them has a static manager class to manage the resources.
But to make this simple, I made the manager class private, so you don't have any access to the manager class. (The manager's constructor is private too)

• MusicResource-wrapper for sf::Music
• SoundResource-wrapper for sf::Sound
• TextureResource-wrapper for sf::Texture
• FontResource-wrapper for sf::Font

There are only 2 things you need to know to use these
-constructor
-get()

Constructor
Each resource constructor takes one std::string argument for the name of the resource
ex) MusicResource music("music.wav");

get()
Each resource object has get() method for retrieving your resource

• TextureResource::get() returns a reference to sf::Sprite. This sprite is binded to a sf::Texture object
• MusicResource::get() returns a reference to sf::Music.
• SoundResource::get() returns a reference to sf::Sound. This sound is binded to a sf::SoundBuffer object
• FontResource::get() returns a reference to sf::Font.

Below is a sample code to show you how easy it is to use Simple Resource Wrapper for SFML

#include "MusicResource.h"
#include "SoundResource.h"
#include "TextureResource.h"


int main()
 {
     // Create the main window
     sf::RenderWindow window(sf::VideoMode(800, 600), "SFML window");
 
     // Load a sprite to display
        TextureResource texture1("Pretty_Image.png");
        TextureResource texture2("Pretty_Image.png");//This won't load Pretty_Image.png twice.
        texture2.get().setRotation(10); //change rotation

        //Load a third texture to display
        TextureResource texture3("Even_Prettier.png");
        texture3.get().setPosition(100, 100);//change position
 
     // Load a music to play
        MusicResource music("good_music.wav");
        //play the music
        music.get().play();

        //Load a font
        FontResource font("C:/Users/Park/Desktop/Resources/Bedizen.ttf");
        sf::Text text("Hello", font.get());
        sf::Text text2("World", font.get());
        text2.move(400, 0);
 
     while (window.isOpen())
     {
         sf::Event event;
         while (window.pollEvent(event))
         {
             if (event.type == sf::Event::Closed)
                 window.close();
         }
         window.clear();
 
         // Draw the first texture
         window.draw(texture1.get());
         // Draw the second texture
         window.draw(texture2.get());
         // Draw the third texture
          window.draw(texture3.get());
         //draw the texts
         window.draw(text);
         window.draw(text2);
         window.display();
     }
        //load a short sound for finale
        SoundResource sound("Bye_Bye.wav");
       
        //Play the bye bye sound
        sound.get().play();
     return EXIT_SUCCESS;
 }

 

21

Audio / sf::Music trying to solve non-copy problem with "move"

« on: November 09, 2012, 10:54:03 pm »

I'm making a music resource manager class and I'm storing sf::Music in a unordered_map

std::unordered_map<std::string, std::pair<int, sf::Music>> resourceMap;

And it seems that I must use a reference or a smart pointer to store the music because of non-copyable
But instead of using this, I tried to get around with using move constructor...

resourceMap[name]=std::make_pair(1, std::move(sf::Music())); //Create the resource using "move"
                resourceMap[name].second.openFromFile(name); //load the resource
                std::cout<<"Loading "<<name<<" for the first time\n";

But it doesn't work
Errors I get...
1>c:\users\park\desktop\my sdks\include\sfml\system\mutex.hpp(89): error C2248: 'sf::NonCopyable::operator =' : cannot access private member declared in class 'sf::NonCopyable'
1>          c:\users\park\desktop\my sdks\include\sfml\system\noncopyable.hpp(79) : see declaration of 'sf::NonCopyable::operator ='
1>          c:\users\park\desktop\my sdks\include\sfml\system\noncopyable.hpp(42) : see declaration of 'sf::NonCopyable'
1>          This diagnostic occurred in the compiler generated function 'sf::Mutex &sf::Mutex::operator =(const sf::Mutex &)'

22

Graphics / sf::Text throws an exception

« on: October 31, 2012, 03:12:09 am »

I figured that the constructor of sf::Text no longer has Font::getDefaultFont() as its second default argument.
so I just put sf::Text("...", sf::Font()), but this throws an exception.
But when I predefine a font object with its default constructor, it doesn't throw an exception. why?

I also just realized that either way doesn't render any text onto the screen.

 #include <SFML/Graphics.hpp>
 
 int main()
 {

     sf::RenderWindow window(sf::VideoMode(800, 600), "SFML window");
     
     //Exception
     sf::Text text("Exception thrown because of this->", sf::Font());
     
     //no exception
     //sf::Font font;
     //sf::Text text("Exception not thrown here", font);
 
     while (window.isOpen())
     {
         sf::Event event;
         while (window.pollEvent(event))
         {
             if (event.type == sf::Event::Closed)
                 window.close();
         }
         window.clear();
         window.draw(text);
         window.display();
     }
 
     return EXIT_SUCCESS;
 }
 

23

General / SFML 2.0 with VS 2012

« on: October 29, 2012, 12:38:51 am »

How can I use sfml with vs 2012

24

Window / cannot pass RenderWindow object by const reference

« on: September 05, 2012, 04:29:03 am »

I have a game object that receives reference to RenderWindow object
And this game.draw passes the const reference to window further down to menu object also as a const reference

game.draw(const sf::RenderWindow & r)
{
   menu.draw(r);
}

Using the window reference, menu object draws some stuff.

menu.draw(const sf::RenderWindow & r)
{
    r.draw(/*draw some stuff here*/);
}

when I try to pass the window object by const reference I get an error
"overloads have no legal conversion for 'this' pointer"

Why can't I do this?

25

Window / window title displaying junk

« on: August 23, 2012, 06:20:40 pm »

#pragma comment(lib, "sfml-graphics.lib")
#pragma comment(lib, "sfml-window.lib")
#pragma comment(lib, "sfml-system.lib")
#pragma comment(lib, "sfml-audio.lib")


#pragma comment(lib, "opengl32.lib")
#pragma comment(lib, "glu32.lib")


#include <SFML/Window.hpp>
#include <SFML/OpenGL.hpp>
#include <SFML/Audio.hpp>

int main()
{
    // create the window
        sf::Window window(sf::VideoMode(800, 600), "OpenGL", sf::Style::Close, sf::ContextSettings());
             

    // load resources, initialize the OpenGL states, ...
        glClearColor (0.0, 0.0, 0.0, 0.0);
        glClear (GL_COLOR_BUFFER_BIT);
        glColor3f (1.0, 1.0, 1.0);
        glOrtho(0.0, 1.0, 0.0, 1.0, -1.0, 1.0);


    // run the main loop
    bool running = true;
    while (running)
    {
        // handle events
        sf::Event event;
        while (window.pollEvent(event))
        {
            if (event.type == sf::Event::Closed)
            {
                // end the program
                running = false;
            }
            else if (event.type == sf::Event::Resized)
            {
                // adjust the viewport when the window is resized
                glViewport(0, 0, event.size.width, event.size.height);
            }
        }

        // clear the buffers
        glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

        // draw...
                glBegin(GL_POLYGON);
                        glVertex3f (0.25, 0.25, 0.0);
                        glVertex3f (0.75, 0.25, 0.0);
                        glVertex3f (0.75, 0.75, 0.0);
                        glVertex3f (0.25, 0.75, 0.0);
                glEnd();



        // end the current frame (internally swaps the front and back buffers)
        window.display();
    }

    // release resources...

    return 0;
}

The above code is displaying junk window title, not "OpenGL".
What did I do wrong?
I'm using 2.0