Irrlicht device in header

[axeves]

Yeah, i want to basically keep my main.cpp clean, 'cause it's more than a thousand lines, and therefore just make a header containing like:

Code: Select all

 
void init() {
            irrlichtDevice *device = createDevice();
            //init gui, scenemanager, and video driver.
            //handle input
}
 

and just run init(); in my main.cpp. But i don't get that to work, i always get errors that say that scenemanager, device, driver, guienv doesn't exist. But isn't this copied to main.cpp when i call init(); from it?

So, that's what i need help with.

Any answer is helpful, even if it's just "STUPID NOOB JUST SEARCH: ______"

Yeah, if you need clarification, just ask.

[axeves]

There is probably an example using that somewhere, if you could say which, i would be most grateful.

[smso]

I think the init code of irrlicht engine is not very lengthy. You should split up (or refactor) other parts of codes in main.cpp into different classes (.cpp and corresponding .h files).

If the program failed to compile, showing some error logs would be useful in the forum.

Regards
smso

[CuteAlien]

But i don't get that to work, i always get errors that say that scenemanager, device, driver, guienv doesn't exist. But isn't this copied to main.cpp when i call init(); from it?

No, what have to understand for this is the scope in which a variable in valid in c++. Maybe check this tutorial about scope: http://www.cplusplus.com/doc/tutorial/variables/

A function only has access to variables declared inside, variabled passed to it and global variables.
Memberfunctions of classes can also access the member-variables of a class.

For an example how you can split it up see here (my post at the bottom): http://irrlicht.sourceforge.net/forum/v ... 7&p=262710

[axeves]

But i don't get that to work, i always get errors that say that scenemanager, device, driver, guienv doesn't exist. But isn't this copied to main.cpp when i call init(); from it?

No, what have to understand for this is the scope in which a variable in valid in c++. Maybe check this tutorial about scope: http://www.cplusplus.com/doc/tutorial/variables/

A function only has access to variables declared inside, variabled passed to it and global variables.
Memberfunctions of classes can also access the member-variables of a class.

For an example how you can split it up see here (my post at the bottom): http://irrlicht.sourceforge.net/forum/v ... 7&p=262710

Thanks, i managed to get it working using the example you referenced in that link, and it also seems like i have to better my knowledge of C++, and use classes more often.

[Mel]

Your main has 1000 lines? now that's a LONG main file, are you sure you can't split it somehow? ^^U

You should definately use more classes and splitting your code, basically because of maintenance tasks and debugging, it isn't the same to have a search in a 1000 lines file than in one of just 200 or so. I don't say that you modularize every function inside a single .cpp file, that is overkill, but that you split each part of your program according to its functionality.

The good thing is that the amount of flexibility you win is enormous.