使用cocos2d-x开发各种编辑器-优快云博客

感觉cocos2d/x的各种编辑器还是挺丰富的，但由于都是免费的软件，其中有各种隐患，cocos2d/x在不断的更新，但如果相应的编辑器没更新的话，这软件就不能用了，或者有些软件的bug层出不穷，所以自己能动手开发相应的编辑器还是有必要的。一开始想用windows的GDI开发，后来再想了一下为啥不直接用cocos2d-x来开发呢，将cocos2d-x嵌入到MFC里，就可以将windows各种强大的控件跟cocos2d-x各种动画结合起来了。

原理很简单，cocos2d-x在windows上运行的时候其实也是依赖于窗口的，但那是一个顶层窗口，要稍微修改一下，将cocos2d-x运行在一个子窗口里，这样就能嵌入到编辑器里。

打开cocos2d-x的libcoco2d库里的platform/win32/CCEGLView.cpp，替换bool CCEGLView::Create()的代码：

bool bRet = false;
    do
    {
        CC_BREAK_IF(m_hWnd);

        HINSTANCE hInstance = GetModuleHandle( NULL );
        WNDCLASS  wc;        // Windows Class Structure

        // Redraw On Size, And Own DC For Window.
        wc.style          = CS_HREDRAW | CS_VREDRAW | CS_OWNDC;
        wc.lpfnWndProc    = _WindowProc;                    // WndProc Handles Messages
        wc.cbClsExtra     = 0;                              // No Extra Window Data
        wc.cbWndExtra     = 0;                                // No Extra Window Data
        wc.hInstance      = hInstance;                        // Set The Instance
        wc.hIcon          = LoadIcon( NULL, IDI_WINLOGO );    // Load The Default Icon
        wc.hCursor        = LoadCursor( NULL, IDC_ARROW );    // Load The Arrow Pointer
        wc.hbrBackground  = NULL;                           // No Background Required For GL
        wc.lpszMenuName   = m_menu;                         //
        wc.lpszClassName  = kWindowClassName;               // Set The Class Name

        CC_BREAK_IF(! RegisterClass(&wc) && 1410 != GetLastError());

        // center window position
        RECT rcDesktop;
        GetWindowRect(GetDesktopWindow(), &rcDesktop);

        WCHAR wszBuf[50] = {0};
        MultiByteToWideChar(CP_UTF8, 0, m_szViewName, -1, wszBuf, sizeof(wszBuf));

        // create window
        m_hWnd = CreateWindowEx(
            WS_EX_APPWINDOW | WS_EX_WINDOWEDGE,    // Extended Style For The Window
            kWindowClassName,                                    // Class Name
            wszBuf,                                                // Window Title
            WS_CAPTION | WS_POPUPWINDOW | WS_MINIMIZEBOX,        // Defined Window Style
            0, 0,                                                // Window Position
            //TODO: Initializing width with a large value to avoid getting a wrong client area by 'GetClientRect' function.
            1000,                                               // Window Width
            1000,                                               // Window Height
            NULL,                                                // No Parent Window
            NULL,                                                // No Menu
            hInstance,                                            // Instance
            NULL );

        CC_BREAK_IF(! m_hWnd);

        bRet = initGL();
		if(!bRet) destroyGL();
        CC_BREAK_IF(!bRet);

        s_pMainWindow = this;
        bRet = true;
    } while (0);

#if(_MSC_VER >= 1600)
    m_bSupportTouch = CheckTouchSupport();
    if(m_bSupportTouch)
	{
	    m_bSupportTouch = (s_pfRegisterTouchWindowFunction(m_hWnd, 0) != 0);
    }
#endif /* #if(_MSC_VER >= 1600) */

    return bRet;

替换为

bool bRet = false;
    do
    {
        CC_BREAK_IF(m_hWnd);

        HINSTANCE hInstance = GetModuleHandle( NULL );
        WNDCLASS  wc;        // Windows Class Structure

        // Redraw On Size, And Own DC For Window.
        wc.style          = CS_HREDRAW | CS_VREDRAW | CS_OWNDC;
        wc.lpfnWndProc    = _WindowProc;                    // WndProc Handles Messages
        wc.cbClsExtra     = 0;                              // No Extra Window Data
        wc.cbWndExtra     = 0;                                // No Extra Window Data
        wc.hInstance      = hInstance;                        // Set The Instance
        wc.hIcon          = LoadIcon( NULL, IDI_WINLOGO );    // Load The Default Icon
        wc.hCursor        = LoadCursor( NULL, IDC_ARROW );    // Load The Arrow Pointer
        wc.hbrBackground  = NULL;                           // No Background Required For GL
        wc.lpszMenuName   = NULL;                         //
        wc.lpszClassName  = kWindowClassName;               // Set The Class Name

        CC_BREAK_IF(! RegisterClass(&wc) && 1410 != GetLastError());

        // center window position
        RECT rcDesktop;
        //GetWindowRect(GetDesktopWindow(), &rcDesktop);
		GetClientRect(mParentHwnd,&rcDesktop);

        WCHAR wszBuf[50] = {0};
        MultiByteToWideChar(CP_UTF8, 0, m_szViewName, -1, wszBuf, sizeof(wszBuf));

        // create window
        m_hWnd = CreateWindowEx(
            WS_EX_APPWINDOW | WS_EX_WINDOWEDGE,    // Extended Style For The Window
            kWindowClassName,                                    // Class Name
            wszBuf,                                                // Window Title
            WS_CHILDWINDOW|WS_VISIBLE,        // Defined Window Style
            0, 0,                                                // Window Position
            //TODO: Initializing width with a large value to avoid getting a wrong client area by 'GetClientRect' function.
            1000,                                               // Window Width
            1000,                                               // Window Height
            mParentHwnd,                                                // No Parent Window
            NULL,                                                // No Menu
            hInstance,                                            // Instance
            NULL );

        CC_BREAK_IF(! m_hWnd);

        bRet = initGL();
		if(!bRet) destroyGL();
        CC_BREAK_IF(!bRet);

        s_pMainWindow = this;
        bRet = true;
    } while (0);

#if(_MSC_VER >= 1600)
    m_bSupportTouch = CheckTouchSupport();
    if(m_bSupportTouch)
	{
	    m_bSupportTouch = (s_pfRegisterTouchWindowFunction(m_hWnd, 0) != 0);
    }
#endif /* #if(_MSC_VER >= 1600) */

    return bRet;

在libcocos2d项目下增加一个文件，里面存放MFC跟cocos2d-x交互的C函数。

extern "C"
{
	CC_DLL bool M2InitializeApplication( HWND hwnd )
	{
		cocos2d::CCEGLView::SetParentHwnd(hwnd);

		// create the application instance
		AppDelegate app;
		cocos2d::CCEGLView* eglView = cocos2d::CCEGLView::sharedOpenGLView();
		eglView->setFrameSize(480, 320);
		// The resolution of ipad3 is very large. In general, PC's resolution is smaller than it.
		// So we need to invoke 'setFrameZoomFactor'(only valid on desktop(win32, mac, linux)) to make the window smaller.
		//eglView->setFrameZoomFactor(0.4f);
		cocos2d::CCApplication::sharedApplication()->run();
		return true;
	}


	CC_DLL bool M2GameCleanUp()
	{
		cocos2d::CCDirector::sharedDirector()->end();
		cocos2d::CCEGLView* eglView = cocos2d::CCEGLView::sharedOpenGLView();
		eglView->Destroy();
		return true;
	}


	CC_DLL bool M2GameLoop( float interval )
	{
		cocos2d::CCDirector::sharedDirector()->mainLoop();
		return true;
	}
}

后在MFC的对话框或View的初始化函数里增加如下代码，以绑定cocos2d的句柄并设置cocos2d视口的大小：

HWND hCocos = ::GetDlgItem(this->m_hWnd, IDC_PANEL);
	CRect rect;
	::GetWindowRect(hCocos, &rect);
	ScreenToClient(&rect);
	::MoveWindow(hCocos, rect.left, rect.top, 480, 320, TRUE);
	::M2InitializeApplication(hCocos);

增加一个定时器辅助cocos2d进行重绘：