[Newbie] Some problems with MyGUI::newDelegate

jonathanc

20-03-2009 00:20:10

Hi all,

Sorry for asking such a noob question but I have tried all methods and failed ><

I recently setup myGui and everything is fine. So I decided to follow the tutorial and create a simple menu with an exit button. However I am having problems at this line :

button->eventMouseButtonClick = MyGUI::newDelegate(this, &this::requestShutdown());

well I might have missed something but usually I use this->requestShutdown to close the app. However, it doesn't seem to work in this case... Any ideas?

nargil

20-03-2009 00:37:04

Is the method called for sure ? If yes, and it still don't work, then you might want to implement a game state system (just a basic enum), set it from the gui to GS_SHUTDOWN, and handle the shutdown in the main loop.

jonathanc

20-03-2009 15:18:28

Hmmm, but my IntroState class inherites from public of GameState. GameState is where the method requestShutdown is. So I think it *should* work but for some reason it doesn't like what I am trying.

For ex:

void IntroState::keyReleased( const OIS::KeyEvent &e ) {	



    if( e.key == OIS::KC_ESCAPE ) {

		

        this->requestShutdown();

    }

will work but button->eventMouseButtonClick = MyGUI::newDelegate(this, this->requestShutdown()); doesn't. Very sorry bout the noobish questions but am really facing a dead end atm ><

this are some of my errors:
error C2780: 'MyGUI::delegates::IDelegate1<TP1> *MyGUI::delegates::newDelegate(void (__cdecl *)(TP1))' : expects 1 arguments - 2 provided

error C2784: 'MyGUI::delegates::IDelegate1<TP1> *MyGUI::delegates::newDelegate(TObj *,void (__thiscall TObj::* )(TP1))' : could not deduce template argument for 'void (__thiscall TObj::* )(TP1)' from 'void'

edit: Also I notice is I comment the button creation and callback off, the program compiles and runs but whenever the mGUI->inject-calls are made the program crashes.

Altren

20-03-2009 15:26:53

Your function should have specific signature, read this: http://www.ogre3d.org/wiki/index.php/My ... _delegates
Something like

void IntroState::buttonRequestShutdown(MyGUI::WidgetPtr _widget) 

     { 

         requestShutdown();

     }

button->eventMouseButtonClick = MyGUI::newDelegate(this, &IntroState::buttonRequestShutdown);

jonathanc

20-03-2009 15:50:38

Your function should have specific signature, read this: http://www.ogre3d.org/wiki/index.php/My ... _delegates
Something like

void IntroState::buttonRequestShutdown(MyGUI::WidgetPtr _widget) 

     { 

         requestShutdown();

     }

button->eventMouseButtonClick = MyGUI::newDelegate(this, &IntroState::buttonRequestShutdown);

Hi! Thanks a lot for the input. Tried that but I have an unhandled exception error pointing to this:

inline WidgetPtr createWidgetT(const Ogre::String & _type, const Ogre::String & _skin, const IntCoord& _coord, Align _align, const Ogre::String & _layer, const Ogre::String & _name = "")

		{

			return _createWidget(_type, _skin, _coord, _align, _layer, _name);

		}

I think perhaps its because of how my whole framework is setup? It's hard for me to explain here but I will link you some of my codes.
This is my IntroState class :

#ifndef PlayState_H

#include "PlayState.h"

#endif



#ifndef GameState_H

#include "GameState.h"

#endif



#include "MyGUI.h"



class IntroState : public GameState{



public:

    ~IntroState( void );



    void enter( void );

    void exit( void );

    void pause( void );

    void resume( void );

    void update( unsigned long lTimeElapsed );

    void keyPressed( const OIS::KeyEvent &e );

    void keyReleased( const OIS::KeyEvent &e );

    void mouseMoved( const OIS::MouseEvent &e );

	void mousePressed( const OIS::MouseEvent &e, OIS::MouseButtonID id );    

    void mouseReleased( const OIS::MouseEvent &e, OIS::MouseButtonID id );

    static IntroState* getSingletonPtr( void );

	 void buttonRequestShutdown(MyGUI::WidgetPtr _widget);

	void frameStarted(const Ogre::FrameEvent& evt);

	MyGUI::Gui * mGUI;

And this is part of my GameState class:

#ifndef GameManager_H

#include "GameManager.h"

#endif



class GameState{

public:

    ~GameState( void ) { }

    virtual void enter( void )  = 0;

    virtual void exit( void )   = 0;

    virtual void pause( void )  = 0;

    virtual void resume( void ) = 0;

    virtual void update( unsigned long lTimeElapsed ) = 0;    

    virtual void keyPressed( const OIS::KeyEvent &e )  = 0;

    virtual void keyReleased( const OIS::KeyEvent &e ) = 0;

    virtual void mouseMoved( const OIS::MouseEvent &e ) = 0;

    virtual void mousePressed( const OIS::MouseEvent &e, OIS::MouseButtonID id )  = 0;

    virtual void mouseReleased( const OIS::MouseEvent &e, OIS::MouseButtonID id ) = 0;	

    void changeState( GameState *state );

    void pushState( GameState *state );

    void popState( void );

    void requestShutdown( void );

and finally this is part of my GameManager class

#ifndef InputManager_H

#include "InputManager.h"

#endif



class GameState;



class GameManager : public OIS::KeyListener, OIS::MouseListener ,  public Ogre::WindowEventListener {

public:

    ~GameManager( void );

    void startGame(GameState *gameState );

    void changeState( GameState *gameState );

    void pushState( GameState *gameState );

    void popState( void );

    void requestShutdown( void );

    static GameManager* getSingletonPtr( void );

private:

    GameManager( void );

    GameManager( const GameManager& ) { }

    GameManager & operator = ( const GameManager& );

   

    bool keyPressed( const OIS::KeyEvent &e );

    bool keyReleased( const OIS::KeyEvent &e );

    bool mouseMoved( const OIS::MouseEvent &e );

    bool mousePressed( const OIS::MouseEvent &e, OIS::MouseButtonID id );

    bool mouseReleased( const OIS::MouseEvent &e, OIS::MouseButtonID id );

Looking at this structure should I move all the inject calls to the GameManager class?
Again very sorry for all these newbie questions but I have looked at all possible solutions so far but still stuck.

Altren

20-03-2009 16:00:33

Check your MyGUI.log and http://www.ogre3d.org/wiki/index.php/MyGUI_FAQ

jonathanc

20-03-2009 16:34:13

hmm tried moving the mygui stuff all to GameManager everything compiles fine but gets unhandled exception error at runtime that points to:

bool Gui::injectMouseMove( int _absx, int _absy, int _absz) {return mInputManager->injectMouseMove(_absx, _absy, _absz);}

	bool Gui::injectMousePress( int _absx, int _absy, MouseButton _id ) {return mInputManager->injectMousePress(_absx, _absy, _id);}

	bool Gui::injectMouseRelease( int _absx, int _absy, MouseButton _id ) {return mInputManager->injectMouseRelease(_absx, _absy, _id);}

if I press/move mouse etc first

or at this if I dont press/move mouse

return _createWidget(_type, _skin, _coord, _align, _layer, _name);

silly question but where can I find the log file for MyGUI? I only can find one in the debug folder but that's not updated.

jonathanc

20-03-2009 16:53:15

Right, did some debugging by inserting breakpoints and apparently the crash starts during this call in IntroState:

MyGUI::ButtonPtr button = mGUI->createWidget<MyGUI::Button>("Button", 10, 10, 300, 26, MyGUI::ALIGN_DEFAULT, "Main");

I currently update that every frame in IntroState since that's what I did with overlays. I am not sure if I should do that?

Altren

20-03-2009 16:54:14

Show me your log. It creates near your exe same way as Ogre.log.

jonathanc

20-03-2009 17:02:42

Altren

20-03-2009 17:55:39

Oh, come on, I can't say you anything from old log with old errors. Run your app in debug and try to step into button creation.

jonathanc

20-03-2009 19:03:32

Altren

20-03-2009 21:13:20

Show me your initialization code.

jonathanc

20-03-2009 21:31:15

Show me your initialization code.

void GameManager::startGame( GameState *gameState) {

   createRoot();

	defineResources();

	setupRenderSystem();

	createRenderWindow();

	initializeResourceGroups();

	setupInputSystem();	



	this->changeState( gameState );



	//myGUI stuff

	mGUI->initialise(mRenderWindow);

	mGUI->hidePointer();



	 unsigned long lTimeLastFrame = 0;



	 while( !bShutdown ) {

      // Calculate time since last frame and remember current time for next frame

        unsigned long lTimeCurrentFrame = mRoot->getTimer()->getMilliseconds();

        unsigned long lTimeSinceLastFrame = lTimeCurrentFrame - lTimeLastFrame;

           lTimeSinceLastFrame = lTimeSinceLastFrame;

        lTimeLastFrame = lTimeCurrentFrame;



        // Update inputmanager

        mInputMgr->capture();



	mGUI->injectFrameEntered(lTimeSinceLastFrame);



        // Update current state

        mStates.back()->update( lTimeSinceLastFrame );



	WindowEventUtilities::messagePump();//yys

	// Render next frame

        mRoot->renderOneFrame();       

    }

}

jonathanc

20-03-2009 21:41:34

Did some breakpoints in the code and it crashes when this is called in IntroState::enter :

mGUI->setSceneManager(mSceneMgr);

and error points to

if (null != mSceneManager) mSceneManager->removeRenderQueueListener(this);

in Layermanager::setSceneManager

Illidanz

21-03-2009 08:08:52

To me, this was happening when I was deleting the MyGUI sceneManager prior to changing it.

You can do that:
mGUI->setSceneManager(nullptr);
//- destroy the old sceneManager
mGUI->setSceneManager(newSceneManager);

This worked for me