source: OGRE/trunk/ogrenew/Samples/GTKDemo/include/ExampleGTKApplication.h @ 692

Revision 692, 5.0 KB checked in by mattausch, 19 years ago (diff)

adding ogre 1.2 and dependencies

RevLine 
[692]1/*
2-----------------------------------------------------------------------------
3This source file is part of OGRE
4    (Object-oriented Graphics Rendering Engine)
5For the latest info, see http://www.ogre3d.org/
6
7Copyright (c) 2000-2005 The OGRE Team
8Also see acknowledgements in Readme.html
9
10This program is free software; you can redistribute it and/or modify it under
11the terms of the GNU Lesser General Public License as published by the Free Software
12Foundation; either version 2 of the License, or (at your option) any later
13version.
14
15This program is distributed in the hope that it will be useful, but WITHOUT
16ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
17FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
18
19You should have received a copy of the GNU Lesser General Public License along with
20this program; if not, write to the Free Software Foundation, Inc., 59 Temple
21Place - Suite 330, Boston, MA 02111-1307, USA, or go to
22http://www.gnu.org/copyleft/lesser.txt.
23-----------------------------------------------------------------------------
24*/
25/*
26-----------------------------------------------------------------------------
27Filename:    ExampleApplication.h
28Description: Base class for all the OGRE examples
29-----------------------------------------------------------------------------
30*/
31
32#ifndef __ExampleApplication_H__
33#define __ExampleApplication_H__
34
35#include "Ogre.h"
36#include "OgreConfigFile.h"
37#include "ExampleFrameListener.h"
38
39
40using namespace Ogre;
41
42/** Base class which manages the standard startup of an Ogre application.
43    Designed to be subclassed for specific examples if required.
44*/
45class ExampleApplication
46{
47public:
48    /// Standard constructor
49    ExampleApplication()
50    {
51        mFrameListener = 0;
52        mRoot = 0;
53    }
54    /// Standard destructor
55    virtual ~ExampleApplication()
56    {
57        if (mFrameListener)
58            delete mFrameListener;
59        if (mRoot)
60            delete mRoot;
61    }
62
63    /// Start the example
64    virtual void go(void)
65    {
66        if (!setup())
67            return;
68
69        mRoot->startRendering();
70    }
71
72protected:
73    Root *mRoot;
74    Camera* mCamera;
75    SceneManager* mSceneMgr;
76    FrameListener* mFrameListener;
77    RenderWindow* mWindow;
78
79    // These internal methods package up the stages in the startup process
80    /** Sets up the application - returns false if the user chooses to abandon configuration. */
81    virtual bool setup(void)
82    {
83        mRoot = new Root();
84
85        setupResources();
86
87        // We choose only the OpenGL rendering subsystem
88        // If it does not exist, the initialise call will exit with the
89        // #2 "Cannot initialise - no render system has been selected.." error
90        Ogre::RenderSystemList::iterator pRend = mRoot->getAvailableRenderers()->begin();
91        while (pRend != mRoot->getAvailableRenderers()->end())
92        {
93            if ((*pRend)->getName() == "OpenGL Rendering Subsystem")
94                mRoot->setRenderSystem(*pRend);
95            pRend++;
96        }
97
98        mRoot->initialise(false);
99        setupGTKWindow();
100
101        chooseSceneManager();
102
103        createCamera();
104        createViewports();
105
106        // Set default mipmap level (NB some APIs ignore this)
107        TextureManager::getSingleton().setDefaultNumMipmaps(5);
108
109        // Create the scene
110        createScene();
111
112        createFrameListener();
113
114        return true;
115
116    }
117
118    virtual void chooseSceneManager(void)
119    {
120        // Get the SceneManager, in this case a generic one
121        mSceneMgr = mRoot->getSceneManager(ST_GENERIC);
122    }
123    virtual void createCamera(void)
124    {
125        // Create the camera
126        mCamera = mSceneMgr->createCamera("PlayerCam");
127
128        // Position it at 500 in Z direction
129        mCamera->setPosition(Vector3(0,0,500));
130        // Look back along -Z
131        mCamera->lookAt(Vector3(0,0,-300));
132        mCamera->setNearClipDistance(5);
133
134    }
135    virtual void createFrameListener(void) = 0;
136
137    virtual void createScene(void) = 0;    // pure virtual - this has to be overridden
138
139    virtual void createViewports(void)
140    {
141        // Create one viewport, entire window
142        Viewport* vp = mWindow->addViewport(mCamera);
143        vp->setBackgroundColour(ColourValue(0,0,0));
144    }
145
146    /// Method which will define the source of resources (other than current folder)
147    virtual void setupResources(void)
148    {
149        // Load resource paths from config file
150        ConfigFile cf;
151        cf.load("resources.cfg");
152
153        // Go through all settings in the file
154        ConfigFile::SettingsIterator i = cf.getSettingsIterator();
155
156        String typeName, archName;
157        while (i.hasMoreElements())
158        {
159            typeName = i.peekNextKey();
160            archName = i.getNext();
161            ResourceManager::addCommonArchiveEx( archName, typeName );
162        }
163    }
164
165
166        virtual void setupGTKWindow(void) = 0;
167};
168
169
170#endif
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