Why doesn't this Inline header compile?

Question

I come from a .NET and Java background, and I'm trying to create a simple scene manager for my game. It's an inline header file, and I'm getting errors compiling.

#pragma once
#include "Scene.h"
class SceneManager
{
private:
    static Scene currentScene;

public:    

    SceneManager()
    {
    }

    static void SetScene(Scene scene)
    {
        currentScene = scene;
    }

    static Scene GetScene()
    {
        return currentScene;
    }
};

EDIT: I am getting this error:

Error   1   error LNK2001: unresolved external symbol "private: static class Scene SceneManager::currentScene" (?currentScene@SceneManager@@0VScene@@A) c:\Users\Justin\documents\visual studio 2013\Projects\Noeron\Noeron\main.obj    Noeron

Do you think maybe telling us what the errors are might be important? — Steve Fallows, Jul 17 '14 at 16:32
http://stackoverflow.com/questions/12573816/what-is-an-undefined-reference-unresolved-external-symbol-error-and-how-do-i-fix — JohnP, Jul 17 '14 at 16:36
It does compile. The header (or rather, the source file including it) compiles just fine. What you're getting is a linker error, not a compiler error. — Dan Korn, Jul 17 '14 at 16:54

score 4 · Accepted Answer · answered Jul 17 '14 at 16:34

4

Static member variables need to be not only declared, but defined. The declaration belongs in the header file, and the definition should go into a source file - you only want one of them in the entire program.

Scene SceneManager::currentScene;

answered Jul 17 '14 at 16:34

Mark Ransom

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Why doesn't this Inline header compile?

1 Answers1