Irrlicht Engine

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selector = smgr->createOctTreeTriangleSelector(YourMesh->getMesh(0), YourNode, 128); 

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class	C3DWScene
{
public:
	C3DWScene();
	virtual ~C3DWScene();

< code removed for simplicity>

	ISceneManager*					m_Smgr;
	C3DW_File					   *m_pSceneFile;
	stringc							m_strFileName;
	stringc							m_strTextureRoot;
	stringc							m_strModelRoot;
};


bool	C3DWScene::load(IrrlichtDevice *pDevice, ISceneManager* Smgr, c8 *szFileName, bool bCreateMeshes, bool bCreateLights, c8 *szTextureRoot, c8 *szModelRoot)
{
	m_Smgr = Smgr;

	c8	 *pData;
	s32	nFileSize;

< code removed for simplicity>

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#pragma once

#include "ZApp.h"
#include "GlobalData.h"
#include "3DWLoader.h"

// a simple level to use
class ZLevel_Demo14 : public ZLevel
{
public:
	ICameraSceneNode* m_Camera;
	scene::IAnimatedMeshSceneNode* m_Node; 
	C3DWScene* m_c3dw;

	ZLevel_Demo14(void)				{	Initialize();						};
	virtual ~ZLevel_Demo14(void)	{	Cleanup();							};

	virtual void Initialize()		{	
										Z_INIT(m_Camera);
										Z_INIT(m_Node);
										Z_INIT(m_c3dw);
									};

	virtual bool Create(ZApp* App)	{	
										ZLevel::Create(App);	
										m_Camera = m_Smgr->addCameraSceneNodeFPS();
										m_Camera->setPosition(irr::core::vector3df(0,0,0));

										ISceneNode *SkyBox = m_Smgr->addSkyBoxSceneNode(
											m_App->GetEngine()->m_Driver->getTexture("media\\textures\\skybox\\pos_y.png"),
											m_App->GetEngine()->m_Driver->getTexture("media\\textures\\skybox\\neg_y.png"),
											m_App->GetEngine()->m_Driver->getTexture("media\\textures\\skybox\\neg_x.png"),
											m_App->GetEngine()->m_Driver->getTexture("media\\textures\\skybox\\pos_x.png"),
											m_App->GetEngine()->m_Driver->getTexture("media\\textures\\skybox\\neg_z.png"),
											m_App->GetEngine()->m_Driver->getTexture("media\\textures\\skybox\\pos_z.png"));

										m_c3dw = new C3DWScene();											
										m_c3dw->load(m_App->GetEngine()->m_Device, m_Smgr, "media\\testworld\\track.3dw", true, true);

										return true;	
									};

	virtual bool Cleanup()			{	Initialize();		Z_SAFE_DELETE(m_c3dw);	return false;			};
	virtual void Frame()			{	ZLevel::Frame();	m_Smgr->drawAll();								};

	virtual bool OnEvent(SEvent event)
									{
										if (m_Camera->OnEvent(event)) return true;

										// do global application level message handling here
										switch(event.EventType)
										{
											case EET_MOUSE_INPUT_EVENT :
												{
													switch (event.MouseInput.Event)
													{
														case EMIE_RMOUSE_PRESSED_DOWN : 
															{
																m_Camera->setInputReceiverEnabled(!m_Camera->isInputReceiverEnabled());
																m_App->m_Engine->m_Device->getCursorControl()->setVisible(!m_Camera->isInputReceiverEnabled());
															};	break;
													}
												} break;
										}

										// we did not want this message
										return false;
									};

	virtual void UnLoad()			{	ZLevel::UnLoad();					};
	virtual void Load()				{	
										m_App->m_Engine->m_Driver->setFog(SColor(0,0,0,0), true, 1400.0, 5600.0); 

										// stuff for the application to use
										m_GUIElements[1] = m_App->m_Engine->m_Gui->addButton(rect<s32>(10,10,100,40), 0, ID_MAINMENU, L"MainMenu");
										m_Camera->setInputReceiverEnabled(true);
										m_App->m_Engine->m_Device->getCursorControl()->setVisible(true);
									};
};