//---------------------------------------------------------------------------
bool NIF_Files::CreateScene()
{
// Because our scene will have some billboards with alpha, we use
// a NiAlphaAccumulator in order that our alpha gets sorted and drawn
// correctly.
NiAlphaAccumulator* pkAccum = NiNew NiAlphaAccumulator;
m_spRenderer->SetSorter(pkAccum);
// NiStreams are used to load a NIF file from disk. Once a stream is
// loaded, it will contain one or more "top-level" objects. These objects
// could be NiNodes, NiTextures, or any other Gamebryo class. The Max and
// Maya exporters both place the scene graph as the first element in the
// NIF file.
NiStream kStream;
// Load in the scenegraph for our world...
bool bSuccess = kStream.Load(
NiApplication::ConvertMediaFilename("GameScene.nif"));
if (!bSuccess)
{
NiMessageBox("WORLD.NIF file could not be loaded!", "NIF Error");
return false;
}
m_spScene = (NiNode*) kStream.GetObjectAt(0);
NIASSERT(NiIsKindOf(NiNode, m_spScene));
// We expect the world to have been exported with a camera, so we
// look for it here.
// In order to render the scene graph, we need a camera. We're now going
// to recurse the scene graph looking for a camera.
if (!FindSceneCamera())
{
NiMessageBox("The NIF file has no camera!", "Camera Error");
return false;
}
NiTObjectArray<NiCameraPtr> kCameras;
NiTObjectArray<NiLightPtr> kLights;
NiTObjectArray<NiNodePtr> kScenes;
//NiStream kStream;
//bool bSuccess = kStream.Load(
// NiApplication::ConvertMediaFilename("GameScene.nif"));
// if (!bSuccess)
// {
// NiMessageBox("WORLD.NIF file could not be loaded!", "NIF Error");
// return false;
// }
for (unsigned int i = 0; i < kStream.GetObjectCount(); i++)
{
NiObject* pkObject = kStream.GetObjectAt(i);
if (NiIsKindOf(NiCamera, pkObject))
kCameras.Add((NiCamera*) pkObject);
else if (NiIsKindOf(NiLight, pkObject))
kLights.Add((NiLight*) pkObject);
else if (NiIsKindOf(NiNode, pkObject))
kScenes.Add((NiNode*) pkObject);
else
{
// unknown object, handle it somehow
}
}
//m_spScene = (NiNode*) kStream.GetObjectAt(0);
// NIASSERT(NiIsKindOf(NiNode, m_spScene));
return bSuccess;
}
