Topics

1

General / SFML 2.0 and CEGUI 7.7 issue

« on: November 11, 2012, 05:18:54 pm »

I'm having trouble implementing CEGUI into my SFML game. I did some testing and found out that it's to do with drawing a sprite.

Here's what the basic Hello World CEGUI tutorial window looks like for me when I also try to draw a sprite:



And this is what it looks like with the sprite draw call commented out:



Here's the code:

#include <CEGUI.h>
#include <RendererModules\OpenGL\CEGUIOpenGLRenderer.h>
#include <SFML\Graphics.hpp>
#include <SFML\System.hpp>
using namespace CEGUI;

int main(int /*argc*/, char* /*argv*/[])
{
        sf::RenderWindow window(sf::VideoMode(1280, 720), "SFML works!");
        sf::CircleShape shape(100.f);
        shape.setFillColor(sf::Color::Green);

        CEGUI::OpenGLRenderer& myRenderer = CEGUI::OpenGLRenderer::create();
        CEGUI::System::create( myRenderer );

        // initialise the required dirs for the DefaultResourceProvider
        CEGUI::DefaultResourceProvider* rp = static_cast<CEGUI::DefaultResourceProvider*>
                (CEGUI::System::getSingleton().getResourceProvider());
        rp->setResourceGroupDirectory("schemes", "datafiles/schemes/");
        rp->setResourceGroupDirectory("imagesets", "datafiles/imagesets/");
        rp->setResourceGroupDirectory("fonts", "datafiles/fonts/");
        rp->setResourceGroupDirectory("layouts", "datafiles/layouts/");
        rp->setResourceGroupDirectory("looknfeels", "datafiles/looknfeel/");
        rp->setResourceGroupDirectory("lua_scripts", "datafiles/lua_scripts/");
        // This is only really needed if you are using Xerces and need to
        // specify the schemas location
        rp->setResourceGroupDirectory("schemas", "datafiles/xml_schemas/");

        // set the default resource groups to be used
        CEGUI::Imageset::setDefaultResourceGroup("imagesets");
        CEGUI::Font::setDefaultResourceGroup("fonts");
        CEGUI::Scheme::setDefaultResourceGroup("schemes");
        CEGUI::WidgetLookManager::setDefaultResourceGroup("looknfeels");
        CEGUI::WindowManager::setDefaultResourceGroup("layouts");
        CEGUI::ScriptModule::setDefaultResourceGroup("lua_scripts");
        // setup default group for validation schemas
        CEGUI::XMLParser* parser = CEGUI::System::getSingleton().getXMLParser();
        if (parser->isPropertyPresent("SchemaDefaultResourceGroup"))
                parser->setProperty("SchemaDefaultResourceGroup", "schemas");

        SchemeManager::getSingleton().create("TaharezLook.scheme");
        System::getSingleton().setDefaultMouseCursor("TaharezLook", "MouseArrow");
        WindowManager& winMgr = WindowManager::getSingleton();
        DefaultWindow* root = (DefaultWindow*)winMgr.createWindow("DefaultWindow", "Root");
        System::getSingleton().setGUISheet(root);
        FrameWindow* wnd = (FrameWindow*)winMgr.createWindow("TaharezLook/FrameWindow", "Demo Window");
        root->addChildWindow(wnd);
        wnd->setPosition(UVector2(cegui_reldim(0.25f), cegui_reldim( 0.25f)));
    wnd->setSize(UVector2(cegui_reldim(0.5f), cegui_reldim( 0.5f)));
        wnd->setMaxSize(UVector2(cegui_reldim(1.0f), cegui_reldim( 1.0f)));
    wnd->setMinSize(UVector2(cegui_reldim(0.1f), cegui_reldim( 0.1f)));
        wnd->setText("Hello World!");

        sf::Texture     texture;
        sf::Sprite sprite;
        texture.loadFromFile("Data/Textures/Ship.png");
        sprite.setTexture(texture);

        while (window.isOpen())
        {
                sf::Event event;

                while (window.pollEvent(event))
                {
                        if (event.type == sf::Event::Closed)
                                window.close();
                }

                window.clear(sf::Color(255, 255, 255));
                window.draw(sprite);
                CEGUI::System::getSingleton().renderGUI();
                window.display();
        }

        return 0;
}

Drawing a shape works properly, it's only a sprite which messes things up. Also, once the sprite draw call has been called once, I can stop calling it and the issue still persists. It's messing with the underlying OpenGL somehow.

Anybody have any advice?

2

Graphics / Help with classes

« on: October 14, 2010, 05:49:46 pm »

I'm trying to get my head around classes. I want to create the sprite in the tutorial but implement it using a class. The tutorial has some examples on how to use sprites as classes but I'm not experienced enough with C++ to get them to work. Here is what I have so far..

Code: [Select]

// SFMLTest.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include <SFML/Graphics.hpp>
#include "Mario.h"

int main()
{
    // Create the main rendering window
    sf::RenderWindow App(sf::VideoMode(800, 600, 32), "SFML Graphics");

Mario Mario(App);

    // Start game loop
    while (App.IsOpened())
    {
        // Process events
        sf::Event Event;
        while (App.GetEvent(Event))
        {
            // Close window : exit
            if (Event.Type == sf::Event::Closed)
                App.Close();
        }

        // Get elapsed time
        float ElapsedTime = App.GetFrameTime();

        // Clear screen
        App.Clear();

    // Draw Mario
    Mario.draw(App);

        // Display window contents on screen
        App.Display();
    }

    return EXIT_SUCCESS;
}


Code: [Select]

// Mario.h

#pragma once
#include <SFML/Graphics.hpp>

class Mario
{
public:

static bool Init(const std::string& ImageFile)
    {
        return Image.LoadFromFile("sprite.png");
    }

Mario(sf::RenderWindow &App);

~Mario(void);

void draw(sf::RenderWindow &App);

private :

    static sf::Image Image; // shared by every instance

    sf::Sprite Sprite; // one per instance

sf::RenderWindow &myWindow;
};

Code: [Select]

// Mario.cpp

#include "StdAfx.h"
#include "Mario.h"

Mario::Mario(sf::RenderWindow &App) : myWindow (App)
{
Sprite.SetImage(Image); // every sprite uses the same unique image
}

Mario::~Mario(void)
{
}

void Mario::draw(sf::RenderWindow &App)
{
App.Draw(Sprite);
}

I managed to iron out all the errors apart from this:

Error   1   error LNK2001: unresolved external symbol "private: static class sf::Image Mario::Image" (?Image@Mario@@0V0sf@@A)   Mario.obj   SFMLTest

I assume it's something to do with this code, because I don't really know what it means (I just copied it from the tutorial):

Code: [Select]

static bool Init(const std::string& ImageFile)
    {
        return Image.LoadFromFile("sprite.png");
    }

I've been trying to figure this out for a few hours before posting here, please help me .