Many events

[Jimicro]

Hello

Is there away you can have many different events?

Like different classes and functions.

sf::Event Run;
sf::Event Meny;

Like that?

[Nexus]

What do you want to achieve by doing this? There is probably another way.

You normally only have one sf::Event instance, which doesn't live very long. Some related code in the main loop might look as follows:

Code: [Select]

sf::Event event;
while (renderWindow.GetEvent(event))
{
    // react to events here
}
// after the loop, the event isn't interesting anymore

[Jimicro]

What do you want to achieve by doing this? There is probably another way.

You normally only have one sf::Event instance, which doesn't live very long. Some related code in the main loop might look as follows:

Code: [Select]

sf::Event event;
while (renderWindow.GetEvent(event))
{
    // react to events here
}
// after the loop, the event isn't interesting anymore

okey, thx I only want a menu and don´t want to load the game before the menu. You now like a real game so I don´t will see the game in the background while I am in the menu.

But thanks I shall see what I can do now. And hopefully it will work.

[gsaurus]

I only want a menu and don´t want to load the game before the menu. You now like a real game so I don´t will see the game in the background while I am in the menu.

Perhaps you want something like this?

[Jimicro]

I only want a menu and don´t want to load the game before the menu. You now like a real game so I don´t will see the game in the background while I am in the menu.

Perhaps you want something like this?

yeah, but I didn´t got it to work

So I hopefully thought it was some easier way to handle many events.

[Jimicro]

I have tried a lot now and I don´t gets it to work.

Code: [Select]

   //Screens preparations
    screen_0 s0;
    Screens.push_back (&s0);

There I get an error.

D:\Programmering\Screens\main.cpp||In function `int main(int, char**)':|
D:\Programmering\Screens\main.cpp|22|error: no matching function for call to `std::vector<cScreen*, std::allocator<cScreen*> >::push_back(screen_0*)'|
C:\Program\CodeBlocks\MinGW\bin\..\lib\gcc\mingw32\3.4.5\..\..\..\..\include\c++\3.4.5\bits\stl_vector.h|557|note: candidates are: void std::vector<_Tp, _Alloc>::push_back(const _Tp&) [with _Tp = cScreen*, _Alloc = std::allocator<cScreen*>]|
||=== Build finished: 1 errors, 0 warnings ===|

This error I only get when I write:

Code: [Select]

class screen_0: public Screen
and if I get this code

Code: [Select]

class screen_0: public Screen
{
private:
    int alpha_max;
    int alpha_div;
    bool playing;
public:
    screen_0 (void);
    virtual int Run (sf::RenderWindow &App);
};


Here I get an error to if I write public Screen after the class.

D:\Programmering\Screens\screen_0.hpp|5|error: expected class-name before '{' token|
D:\Programmering\Screens\main.cpp||In function `int main(int, char**)':|
D:\Programmering\Screens\main.cpp|22|error: no matching function for call to `std::vector<cScreen*, std::allocator<cScreen*> >::push_back(screen_0*)'|
C:\Program\CodeBlocks\MinGW\bin\..\lib\gcc\mingw32\3.4.5\..\..\..\..\include\c++\3.4.5\bits\stl_vector.h|557|note: candidates are: void std::vector<_Tp, _Alloc>::push_back(const _Tp&) [with _Tp = cScreen*, _Alloc = std::allocator<cScreen*>]|

I don´t now what to do, can it be some linking error?

[gsaurus]

Code: [Select]

class screen_0: public Screen

Code: [Select]

//Screens preparations
    screen_0 s0;
    Screens.push_back (&s0);

error: no matching function for call to `std::vector<cScreen*, std::allocator<cScreen*> >::push_back(screen_0*)'
(...)
note: candidates are: void std::vector<_Tp, _Alloc>::push_back(const _Tp&) [with _Tp = cScreen*, _Alloc = std::allocator<cScreen*>]

The error says it. Seems that you have a class named "cScreen", the error is saying that your Screens vector is of type std::vector<cScreen*>, and you're trying to add an element of type screen_0* (which base class is of type Screen, and not cScreen. Do you have a class cScreen and another named Screen  :?:

[Jimicro]

Code: [Select]

class screen_0: public Screen

Code: [Select]

//Screens preparations
    screen_0 s0;
    Screens.push_back (&s0);

error: no matching function for call to `std::vector<cScreen*, std::allocator<cScreen*> >::push_back(screen_0*)'
(...)
note: candidates are: void std::vector<_Tp, _Alloc>::push_back(const _Tp&) [with _Tp = cScreen*, _Alloc = std::allocator<cScreen*>]

The error says it. Seems that you have a class named "cScreen", the error is saying that your Screens vector is of type std::vector<cScreen*>, and you're trying to add an element of type screen_0* (which base class is of type Screen, and not cScreen. Do you have a class cScreen and another named Screen  :?:

I have three classes, screen_0, screen_1 and cScreen

I have five files. main.cpp, screen.hpp, screens.hpp, screen_0.hpp, screen_1.hpp

[Jimicro]

I finally solved it:D

The problem was that I didn´t know where I should put the cScreen class, and I didn´t know that it was suppose do be called like the public Screen

So now its called class cScreen and public Screen, and it doesn´t say so in the tutorial, maybe it´s some kind of linking problem. But know it works perfect. and hopefully now I can make my game.

Thanks for ther help anyway