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source: downloads/PlugIns/BSPSceneManager/src/OgreBspSceneManager.cpp @ 1

Last change on this file since 1 was 1, checked in by landauf, 17 years ago

File size: 37.6 KB

Line
1	/*
2	-----------------------------------------------------------------------------
3	This source file is part of OGRE
4	(Object-oriented Graphics Rendering Engine)
5	For the latest info, see http://www.ogre3d.org
6
7	Copyright (c) 2000-2006 Torus Knot Software Ltd
8	Also see acknowledgements in Readme.html
9
10	This program is free software; you can redistribute it and/or modify it under
11	the terms of the GNU Lesser General Public License as published by the Free Software
12	Foundation; either version 2 of the License, or (at your option) any later
13	version.
14
15	This program is distributed in the hope that it will be useful, but WITHOUT
16	ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
17	FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
18
19	You should have received a copy of the GNU Lesser General Public License along with
20	this program; if not, write to the Free Software Foundation, Inc., 59 Temple
21	Place - Suite 330, Boston, MA 02111-1307, USA, or go to
22	http://www.gnu.org/copyleft/lesser.txt.
23
24	You may alternatively use this source under the terms of a specific version of
25	the OGRE Unrestricted License provided you have obtained such a license from
26	Torus Knot Software Ltd.
27	-----------------------------------------------------------------------------
28	*/
29	#include "OgreBspSceneManager.h"
30	#include "OgreBspResourceManager.h"
31	#include "OgreBspNode.h"
32	#include "OgreException.h"
33	#include "OgreRenderSystem.h"
34	#include "OgreCamera.h"
35	#include "OgreMaterial.h"
36	#include "OgrePatchSurface.h"
37	#include "OgreMesh.h"
38	#include "OgreSubMesh.h"
39	#include "OgreMath.h"
40	#include "OgreControllerManager.h"
41	#include "OgreLogManager.h"
42	#include "OgreBspSceneNode.h"
43	#include "OgreStringConverter.h"
44	#include "OgreLogManager.h"
45	#include "OgreTechnique.h"
46	#include "OgrePass.h"
47	#include "OgreMaterialManager.h"
48
49
50	#include <fstream>
51
52	namespace Ogre {
53
54	//-----------------------------------------------------------------------
55	BspSceneManager::BspSceneManager(const String& name)
56	: SceneManager(name)
57	{
58	// Set features for debugging render
59	mShowNodeAABs = false;
60
61	// No sky by default
62	mSkyPlaneEnabled = false;
63	mSkyBoxEnabled = false;
64	mSkyDomeEnabled = false;
65
66	mLevel.setNull();
67
68	}
69	//-----------------------------------------------------------------------
70	const String& BspSceneManager::getTypeName(void) const
71	{
72	return BspSceneManagerFactory::FACTORY_TYPE_NAME;
73	}
74	//-----------------------------------------------------------------------
75	BspSceneManager::~BspSceneManager()
76	{
77	freeMemory();
78	mLevel.setNull();
79	}
80	//-----------------------------------------------------------------------
81	size_t BspSceneManager::estimateWorldGeometry(const String& filename)
82	{
83	return BspLevel::calculateLoadingStages(filename);
84
85	}
86	//-----------------------------------------------------------------------
87	size_t BspSceneManager::estimateWorldGeometry(DataStreamPtr& stream,
88	const String& typeName)
89	{
90	return BspLevel::calculateLoadingStages(stream);
91
92	}
93	//-----------------------------------------------------------------------
94	void BspSceneManager::setWorldGeometry(const String& filename)
95	{
96	mLevel.setNull();
97	// Check extension is .bsp
98	char extension[6];
99	size_t pos = filename.find_last_of(".");
100	if( pos == String::npos )
101	OGRE_EXCEPT(
102	Exception::ERR_INVALIDPARAMS,
103	"Unable to load world geometry. Invalid extension (must be .bsp).",
104	"BspSceneManager::setWorldGeometry");
105
106	strcpy(extension, filename.substr(pos + 1, filename.length() - pos).c_str());
107
108	if (stricmp(extension, "bsp"))
109	OGRE_EXCEPT(Exception::ERR_INVALIDPARAMS,
110	"Unable to load world geometry. Invalid extension (must be .bsp).",
111	"BspSceneManager::setWorldGeometry");
112
113	// Load using resource manager
114	mLevel = BspResourceManager::getSingleton().load(filename,
115	ResourceGroupManager::getSingleton().getWorldResourceGroupName());
116
117	if (mLevel->isSkyEnabled())
118	{
119	// Quake3 is always aligned with Z upwards
120	Quaternion q;
121	q.FromAngleAxis(Radian(Math::HALF_PI), Vector3::UNIT_X);
122	// Also draw last, and make close to camera (far clip plane is shorter)
123	setSkyDome(true, mLevel->getSkyMaterialName(),
124	mLevel->getSkyCurvature(), 12, 2000, false, q);
125	}
126	else
127	{
128	setSkyDome(false, StringUtil::BLANK);
129	}
130
131	// Init static render operation
132	mRenderOp.vertexData = mLevel->mVertexData;
133	// index data is per-frame
134	mRenderOp.indexData = new IndexData();
135	mRenderOp.indexData->indexStart = 0;
136	mRenderOp.indexData->indexCount = 0;
137	// Create enough index space to render whole level
138	mRenderOp.indexData->indexBuffer = HardwareBufferManager::getSingleton()
139	.createIndexBuffer(
140	HardwareIndexBuffer::IT_32BIT, // always 32-bit
141	mLevel->mNumIndexes,
142	HardwareBuffer::HBU_DYNAMIC_WRITE_ONLY_DISCARDABLE, false);
143
144	mRenderOp.operationType = RenderOperation::OT_TRIANGLE_LIST;
145	mRenderOp.useIndexes = true;
146
147
148	}
149	//-----------------------------------------------------------------------
150	void BspSceneManager::setWorldGeometry(DataStreamPtr& stream,
151	const String& typeName)
152	{
153	mLevel.setNull();
154
155	// Load using resource manager
156	mLevel = BspResourceManager::getSingleton().load(stream,
157	ResourceGroupManager::getSingleton().getWorldResourceGroupName());
158
159	if (mLevel->isSkyEnabled())
160	{
161	// Quake3 is always aligned with Z upwards
162	Quaternion q;
163	q.FromAngleAxis(Radian(Math::HALF_PI), Vector3::UNIT_X);
164	// Also draw last, and make close to camera (far clip plane is shorter)
165	setSkyDome(true, mLevel->getSkyMaterialName(),
166	mLevel->getSkyCurvature(), 12, 2000, false, q);
167	}
168	else
169	{
170	setSkyDome(false, StringUtil::BLANK);
171	}
172
173	// Init static render operation
174	mRenderOp.vertexData = mLevel->mVertexData;
175	// index data is per-frame
176	mRenderOp.indexData = new IndexData();
177	mRenderOp.indexData->indexStart = 0;
178	mRenderOp.indexData->indexCount = 0;
179	// Create enough index space to render whole level
180	mRenderOp.indexData->indexBuffer = HardwareBufferManager::getSingleton()
181	.createIndexBuffer(
182	HardwareIndexBuffer::IT_32BIT, // always 32-bit
183	mLevel->mNumIndexes,
184	HardwareBuffer::HBU_DYNAMIC_WRITE_ONLY_DISCARDABLE, false);
185
186	mRenderOp.operationType = RenderOperation::OT_TRIANGLE_LIST;
187	mRenderOp.useIndexes = true;
188
189
190	}
191	//-----------------------------------------------------------------------
192	void BspSceneManager::_findVisibleObjects(Camera* cam,
193	VisibleObjectsBoundsInfo* visibleBounds, bool onlyShadowCasters)
194	{
195	// Clear unique list of movables for this frame
196	mMovablesForRendering.clear();
197
198	// Assemble an AAB on the fly which contains the scene elements visible
199	// by the camera.
200	CamVisibleObjectsMap::iterator findIt = mCamVisibleObjectsMap.find( cam );
201
202	// Walk the tree, tag static geometry, return camera's node (for info only)
203	// Movables are now added to the render queue in processVisibleLeaf
204	walkTree(cam, &(findIt->second), onlyShadowCasters);
205	}
206	//-----------------------------------------------------------------------
207	void BspSceneManager::renderStaticGeometry(void)
208	{
209	// Check we should be rendering
210	if (!isRenderQueueToBeProcessed(mWorldGeometryRenderQueue))
211	return;
212
213	// Cache vertex/face data first
214	std::vector<StaticFaceGroup*>::const_iterator faceGrpi;
215	static RenderOperation patchOp;
216
217	// no world transform required
218	mDestRenderSystem->_setWorldMatrix(Matrix4::IDENTITY);
219	// Set view / proj
220	mDestRenderSystem->_setViewMatrix(mCameraInProgress->getViewMatrix(true));
221	mDestRenderSystem->_setProjectionMatrix(mCameraInProgress->getProjectionMatrixRS());
222
223	// For each material in turn, cache rendering data & render
224	MaterialFaceGroupMap::const_iterator mati;
225
226	for (mati = mMatFaceGroupMap.begin(); mati != mMatFaceGroupMap.end(); ++mati)
227	{
228	// Get Material
229	Material* thisMaterial = mati->first;
230
231	// Empty existing cache
232	mRenderOp.indexData->indexCount = 0;
233	// lock index buffer ready to receive data
234	unsigned int* pIdx = static_cast<unsigned int*>(
235	mRenderOp.indexData->indexBuffer->lock(HardwareBuffer::HBL_DISCARD));
236
237	for (faceGrpi = mati->second.begin(); faceGrpi != mati->second.end(); ++faceGrpi)
238	{
239	// Cache each
240	unsigned int numelems = cacheGeometry(pIdx, *faceGrpi);
241	mRenderOp.indexData->indexCount += numelems;
242	pIdx += numelems;
243	}
244	// Unlock the buffer
245	mRenderOp.indexData->indexBuffer->unlock();
246
247	// Skip if no faces to process (we're not doing flare types yet)
248	if (mRenderOp.indexData->indexCount == 0)
249	continue;
250
251	Technique::PassIterator pit = thisMaterial->getTechnique(0)->getPassIterator();
252
253	while (pit.hasMoreElements())
254	{
255	_setPass(pit.getNext());
256
257	mDestRenderSystem->_render(mRenderOp);
258
259
260	}
261
262
263	} // for each material
264
265	/*
266	if (mShowNodeAABs)
267	{
268	mDestRenderSystem->_render(mAABGeometry);
269	}
270	*/
271	}
272	//-----------------------------------------------------------------------
273	void BspSceneManager::_renderVisibleObjects(void)
274	{
275	// Render static level geometry first
276	renderStaticGeometry();
277
278	// Call superclass to render the rest
279	SceneManager::_renderVisibleObjects();
280
281	}
282
283	//-----------------------------------------------------------------------
284	// REMOVE THIS CRAP
285	//-----------------------------------------------------------------------
286	// Temp debug lines
287	bool firstTime = true;
288	std::ofstream of;
289	//-----------------------------------------------------------------------
290	//-----------------------------------------------------------------------
291	//-----------------------------------------------------------------------
292	BspNode* BspSceneManager::walkTree(Camera* camera,
293	VisibleObjectsBoundsInfo *visibleBounds, bool onlyShadowCasters)
294	{
295	if (mLevel.isNull()) return 0;
296
297	// Locate the leaf node where the camera is located
298	BspNode* cameraNode = mLevel->findLeaf(camera->getDerivedPosition());
299
300	mMatFaceGroupMap.clear();
301	mFaceGroupSet.clear();
302
303	// Scan through all the other leaf nodes looking for visibles
304	int i = mLevel->mNumNodes - mLevel->mLeafStart;
305	BspNode* nd = mLevel->mRootNode + mLevel->mLeafStart;
306
307	/*
308	if (firstTime)
309	{
310	camera->getViewMatrix(); // Force update view before report
311	of.open("BspSceneManager.log");
312	of << *camera << std::endl;
313	of << "Camera Node: " << *cameraNode << std::endl;
314	of << "Vertex Data: " << std::endl;
315	for (int testi = 0; testi < mLevel->mNumVertices; ++testi)
316	{
317	of << " " << testi << ": pos(" <<
318	mLevel->mVertices[testi].position[0] << ", " <<
319	mLevel->mVertices[testi].position[1] << ", " << mLevel->mVertices[testi].position[2] << ")" <<
320	" uv(" << mLevel->mVertices[testi].texcoords[0] << ", " << mLevel->mVertices[testi].texcoords[1] << ")" <<
321	" lm(" << mLevel->mVertices[testi].lightmap[0] << ", " << mLevel->mVertices[testi].lightmap[1] << ")" << std::endl;
322	}
323	of << "Element data:" << std::endl;
324	for (testi = 0; testi < mLevel->mNumElements; ++testi)
325	{
326	of << " " << testi << ": " << mLevel->mElements[testi] << std::endl;
327
328	}
329	}
330	*/
331
332	while (i--)
333	{
334	if (mLevel->isLeafVisible(cameraNode, nd))
335	{
336
337	// Visible according to PVS, check bounding box against frustum
338	FrustumPlane plane;
339	if (camera->isVisible(nd->getBoundingBox(), &plane))
340	{
341	//if (firstTime)
342	//{
343	// of << "Visible Node: " << *nd << std::endl;
344	//}
345	processVisibleLeaf(nd, camera, visibleBounds, onlyShadowCasters);
346	if (mShowNodeAABs)
347	addBoundingBox(nd->getBoundingBox(), true);
348	}
349	}
350	nd++;
351	}
352
353
354	// TEST
355	//if (firstTime)
356	//{
357	// of.close();
358	// firstTime = false;
359	//}
360	return cameraNode;
361
362	}
363	//-----------------------------------------------------------------------
364	void BspSceneManager::processVisibleLeaf(BspNode* leaf, Camera* cam,
365	VisibleObjectsBoundsInfo* visibleBounds, bool onlyShadowCasters)
366	{
367	MaterialPtr pMat;
368	// Skip world geometry if we're only supposed to process shadow casters
369	// World is pre-lit
370	if (!onlyShadowCasters)
371	{
372	// Parse the leaf node's faces, add face groups to material map
373	int numGroups = leaf->getNumFaceGroups();
374	int idx = leaf->getFaceGroupStart();
375
376	while (numGroups--)
377	{
378	int realIndex = mLevel->mLeafFaceGroups[idx++];
379	// Check not already included
380	if (mFaceGroupSet.find(realIndex) != mFaceGroupSet.end())
381	continue;
382	StaticFaceGroup* faceGroup = mLevel->mFaceGroups + realIndex;
383	// Get Material pointer by handle
384	pMat = MaterialManager::getSingleton().getByHandle(faceGroup->materialHandle);
385	assert (!pMat.isNull());
386	// Check normal (manual culling)
387	ManualCullingMode cullMode = pMat->getTechnique(0)->getPass(0)->getManualCullingMode();
388	if (cullMode != MANUAL_CULL_NONE)
389	{
390	Real dist = faceGroup->plane.getDistance(cam->getDerivedPosition());
391	if ( (dist < 0 && cullMode == MANUAL_CULL_BACK) \|\|
392	(dist > 0 && cullMode == MANUAL_CULL_FRONT) )
393	continue; // skip
394	}
395	mFaceGroupSet.insert(realIndex);
396	// Try to insert, will find existing if already there
397	std::pair<MaterialFaceGroupMap::iterator, bool> matgrpi;
398	matgrpi = mMatFaceGroupMap.insert(
399	MaterialFaceGroupMap::value_type(pMat.getPointer(), std::vector<StaticFaceGroup*>())
400	);
401	// Whatever happened, matgrpi.first is map iterator
402	// Need to get second part of that to get vector
403	matgrpi.first->second.push_back(faceGroup);
404
405	//if (firstTime)
406	//{
407	// of << " Emitting faceGroup: index=" << realIndex << ", " << *faceGroup << std::endl;
408	//}
409	}
410	}
411
412	// Add movables to render queue, provided it hasn't been seen already
413	const BspNode::IntersectingObjectSet& objects = leaf->getObjects();
414	BspNode::IntersectingObjectSet::const_iterator oi, oiend;
415	oiend = objects.end();
416	for (oi = objects.begin(); oi != oiend; ++oi)
417	{
418	if (mMovablesForRendering.find(*oi) == mMovablesForRendering.end())
419	{
420	// It hasn't been seen yet
421	MovableObject mov = const_cast<MovableObject>(*oi); // hacky
422	if (mov->isVisible() &&
423	(!onlyShadowCasters \|\| mov->getCastShadows()) &&
424	cam->isVisible(mov->getWorldBoundingBox()))
425	{
426	mov->_notifyCurrentCamera(cam);
427	mov->_updateRenderQueue(getRenderQueue());
428	// Check if the bounding box should be shown.
429	SceneNode* sn = static_cast<SceneNode*>(mov->getParentNode());
430	if (sn->getShowBoundingBox() \|\| mShowBoundingBoxes)
431	{
432	sn->_addBoundingBoxToQueue(getRenderQueue());
433	}
434	mMovablesForRendering.insert(*oi);
435
436	// update visible boundaries aab
437	if (visibleBounds)
438	{
439	visibleBounds->merge((*oi)->getWorldBoundingBox(true),
440	(*oi)->getWorldBoundingSphere(true), cam);
441	}
442	}
443
444	}
445	}
446
447
448	}
449	//-----------------------------------------------------------------------
450	unsigned int BspSceneManager::cacheGeometry(unsigned int* pIndexes,
451	const StaticFaceGroup* faceGroup)
452	{
453	// Skip sky always
454	if (faceGroup->isSky)
455	return 0;
456
457	size_t idxStart, numIdx, vertexStart;
458
459	if (faceGroup->fType == FGT_FACE_LIST)
460	{
461	idxStart = faceGroup->elementStart;
462	numIdx = faceGroup->numElements;
463	vertexStart = faceGroup->vertexStart;
464	}
465	else if (faceGroup->fType == FGT_PATCH)
466	{
467
468	idxStart = faceGroup->patchSurf->getIndexOffset();
469	numIdx = faceGroup->patchSurf->getCurrentIndexCount();
470	vertexStart = faceGroup->patchSurf->getVertexOffset();
471	}
472	else
473	{
474	// Unsupported face type
475	return 0;
476	}
477
478
479	// Copy index data
480	unsigned int* pSrc = static_cast<unsigned int*>(
481	mLevel->mIndexes->lock(
482	idxStart * sizeof(unsigned int),
483	numIdx * sizeof(unsigned int),
484	HardwareBuffer::HBL_READ_ONLY));
485	// Offset the indexes here
486	// we have to do this now rather than up-front because the
487	// indexes are sometimes reused to address different vertex chunks
488	for (size_t elem = 0; elem < numIdx; ++elem)
489	{
490	pIndexes++ = pSrc++ + vertexStart;
491	}
492	mLevel->mIndexes->unlock();
493
494	// return number of elements
495	return static_cast<unsigned int>(numIdx);
496
497
498	}
499
500	//-----------------------------------------------------------------------
501	void BspSceneManager::freeMemory(void)
502	{
503	// no need to delete index buffer, will be handled by shared pointer
504	delete mRenderOp.indexData;
505	mRenderOp.indexData = 0;
506	}
507	//-----------------------------------------------------------------------
508	void BspSceneManager::showNodeBoxes(bool show)
509	{
510	mShowNodeAABs = show;
511	}
512	//-----------------------------------------------------------------------
513	void BspSceneManager::addBoundingBox(const AxisAlignedBox& aab, bool visible)
514	{
515	/*
516	unsigned long visibleColour;
517	unsigned long nonVisibleColour;
518	Root& r = Root::getSingleton();
519
520	r.convertColourValue(ColourValue::White, &visibleColour);
521	r.convertColourValue(ColourValue::Blue, &nonVisibleColour);
522	if (mShowNodeAABs)
523	{
524	// Add set of lines
525	float* pVertices = (float)mAABGeometry.pVertices + (mAABGeometry.numVertices3);
526	unsigned short* pIndexes = mAABGeometry.pIndexes + mAABGeometry.numIndexes;
527	unsigned long* pColours = (unsigned long*)mAABGeometry.pDiffuseColour + mAABGeometry.numVertices;
528
529	const Vector3* pCorner = aab.getAllCorners();
530
531	int i;
532	for (i = 0; i < 8; ++i)
533	{
534	*pVertices++ = pCorner->x;
535	*pVertices++ = pCorner->y;
536	*pVertices++ = pCorner->z;
537	pCorner++;
538
539	if (visible)
540	{
541	*pColours++ = visibleColour;
542	}
543	else
544	{
545	*pColours++ = nonVisibleColour;
546	}
547
548	}
549
550	*pIndexes++ = 0 + mAABGeometry.numVertices;
551	*pIndexes++ = 1 + mAABGeometry.numVertices;
552	*pIndexes++ = 1 + mAABGeometry.numVertices;
553	*pIndexes++ = 2 + mAABGeometry.numVertices;
554	*pIndexes++ = 2 + mAABGeometry.numVertices;
555	*pIndexes++ = 3 + mAABGeometry.numVertices;
556	*pIndexes++ = 3 + mAABGeometry.numVertices;
557	*pIndexes++ = 1 + mAABGeometry.numVertices;
558	*pIndexes++ = 4 + mAABGeometry.numVertices;
559	*pIndexes++ = 5 + mAABGeometry.numVertices;
560	*pIndexes++ = 5 + mAABGeometry.numVertices;
561	*pIndexes++ = 6 + mAABGeometry.numVertices;
562	*pIndexes++ = 6 + mAABGeometry.numVertices;
563	*pIndexes++ = 7 + mAABGeometry.numVertices;
564	*pIndexes++ = 7 + mAABGeometry.numVertices;
565	*pIndexes++ = 4 + mAABGeometry.numVertices;
566	*pIndexes++ = 1 + mAABGeometry.numVertices;
567	*pIndexes++ = 5 + mAABGeometry.numVertices;
568	*pIndexes++ = 2 + mAABGeometry.numVertices;
569	*pIndexes++ = 4 + mAABGeometry.numVertices;
570	*pIndexes++ = 0 + mAABGeometry.numVertices;
571	*pIndexes++ = 6 + mAABGeometry.numVertices;
572	*pIndexes++ = 3 + mAABGeometry.numVertices;
573	*pIndexes++ = 7 + mAABGeometry.numVertices;
574
575
576	mAABGeometry.numVertices += 8;
577	mAABGeometry.numIndexes += 24;
578
579
580	}
581	*/
582
583	}
584	//-----------------------------------------------------------------------
585	ViewPoint BspSceneManager::getSuggestedViewpoint(bool random)
586	{
587	if (mLevel.isNull() \|\| mLevel->mPlayerStarts.size() == 0)
588	{
589	// No level, use default
590	return SceneManager::getSuggestedViewpoint(random);
591	}
592	else
593	{
594	if (random)
595	{
596	size_t idx = (size_t)( Math::UnitRandom() * mLevel->mPlayerStarts.size() );
597	return mLevel->mPlayerStarts[idx];
598	}
599	else
600	{
601	return mLevel->mPlayerStarts[0];
602	}
603
604
605	}
606
607	}
608	//-----------------------------------------------------------------------
609	SceneNode * BspSceneManager::createSceneNode( void )
610	{
611	BspSceneNode * sn = new BspSceneNode( this );
612	mSceneNodes[ sn->getName() ] = sn;
613	return sn;
614	}
615	//-----------------------------------------------------------------------
616	SceneNode * BspSceneManager::createSceneNode( const String &name )
617	{
618	BspSceneNode * sn = new BspSceneNode( this, name );
619	mSceneNodes[ sn->getName() ] = sn;
620	return sn;
621	}
622	//-----------------------------------------------------------------------
623	void BspSceneManager::_notifyObjectMoved(const MovableObject* mov,
624	const Vector3& pos)
625	{
626	if (!mLevel.isNull())
627	{
628	mLevel->_notifyObjectMoved(mov, pos);
629	}
630	}
631	//-----------------------------------------------------------------------
632	void BspSceneManager::_notifyObjectDetached(const MovableObject* mov)
633	{
634	if (!mLevel.isNull())
635	{
636	mLevel->_notifyObjectDetached(mov);
637	}
638	}
639	//-----------------------------------------------------------------------
640	void BspSceneManager::clearScene(void)
641	{
642	SceneManager::clearScene();
643	freeMemory();
644	// Clear level
645	mLevel.setNull();
646	}
647	//-----------------------------------------------------------------------
648	/*
649	AxisAlignedBoxSceneQuery* BspSceneManager::
650	createAABBQuery(const AxisAlignedBox& box, unsigned long mask)
651	{
652	// TODO
653	return NULL;
654	}
655	//-----------------------------------------------------------------------
656	SphereSceneQuery* BspSceneManager::
657	createSphereQuery(const Sphere& sphere, unsigned long mask)
658	{
659	// TODO
660	return NULL;
661	}
662	*/
663	//-----------------------------------------------------------------------
664	RaySceneQuery* BspSceneManager::
665	createRayQuery(const Ray& ray, unsigned long mask)
666	{
667	BspRaySceneQuery* q = new BspRaySceneQuery(this);
668	q->setRay(ray);
669	q->setQueryMask(mask);
670	return q;
671	}
672	//-----------------------------------------------------------------------
673	IntersectionSceneQuery* BspSceneManager::
674	createIntersectionQuery(unsigned long mask)
675	{
676	BspIntersectionSceneQuery* q = new BspIntersectionSceneQuery(this);
677	q->setQueryMask(mask);
678	return q;
679	}
680	//-----------------------------------------------------------------------
681	//-----------------------------------------------------------------------
682	BspIntersectionSceneQuery::BspIntersectionSceneQuery(SceneManager* creator)
683	: DefaultIntersectionSceneQuery(creator)
684	{
685	// Add bounds fragment type
686	mSupportedWorldFragments.insert(SceneQuery::WFT_PLANE_BOUNDED_REGION);
687
688	}
689	void BspIntersectionSceneQuery::execute(IntersectionSceneQueryListener* listener)
690	{
691	/*
692	Go through each leaf node in BspLevel and check movables against each other and world
693	Issue: some movable-movable intersections could be reported twice if 2 movables
694	overlap 2 leaves?
695	*/
696	const BspLevelPtr& lvl = ((BspSceneManager*)mParentSceneMgr)->getLevel();
697	if (lvl.isNull()) return;
698
699	BspNode* leaf = lvl->getLeafStart();
700	int numLeaves = lvl->getNumLeaves();
701
702	while (numLeaves--)
703	{
704	const BspNode::IntersectingObjectSet& objects = leaf->getObjects();
705	int numObjects = (int)objects.size();
706
707	BspNode::IntersectingObjectSet::const_iterator a, b, theEnd;
708	theEnd = objects.end();
709	a = objects.begin();
710	for (int oi = 0; oi < numObjects; ++oi, ++a)
711	{
712	const MovableObject* aObj = *a;
713	// Skip this object if collision not enabled
714	if (!(aObj->getQueryFlags() & mQueryMask) \|\|
715	!(aObj->getTypeFlags() & mQueryTypeMask) \|\|
716	!aObj->isInScene())
717	continue;
718
719	if (oi < (numObjects-1))
720	{
721	// Check object against others in this node
722	b = a;
723	for (++b; b != theEnd; ++b)
724	{
725	const MovableObject* bObj = *b;
726	// Apply mask to b (both must pass)
727	if ((bObj->getQueryFlags() & mQueryMask) &&
728	(bObj->getTypeFlags() & mQueryTypeMask) &&
729	bObj->isInScene())
730	{
731	const AxisAlignedBox& box1 = aObj->getWorldBoundingBox();
732	const AxisAlignedBox& box2 = bObj->getWorldBoundingBox();
733
734	if (box1.intersects(box2))
735	{
736	if (!listener->queryResult(const_cast<MovableObject*>(aObj),
737	const_cast<MovableObject*>(bObj)))
738	return;
739	}
740	}
741	}
742	}
743	// Check object against brushes
744	if (mQueryTypeMask & SceneManager::WORLD_GEOMETRY_TYPE_MASK)
745	{
746	const BspNode::NodeBrushList& brushes = leaf->getSolidBrushes();
747	BspNode::NodeBrushList::const_iterator bi, biend;
748	biend = brushes.end();
749	Real radius = aObj->getBoundingRadius();
750	const Vector3& pos = aObj->getParentNode()->_getDerivedPosition();
751
752	for (bi = brushes.begin(); bi != biend; ++bi)
753	{
754	std::list<Plane>::const_iterator planeit, planeitend;
755	planeitend = (*bi)->planes.end();
756	bool brushIntersect = true; // Assume intersecting for now
757
758	for (planeit = (*bi)->planes.begin(); planeit != planeitend; ++planeit)
759	{
760	Real dist = planeit->getDistance(pos);
761	if (dist > radius)
762	{
763	// Definitely excluded
764	brushIntersect = false;
765	break;
766	}
767	}
768	if (brushIntersect)
769	{
770	// report this brush as it's WorldFragment
771	assert((*bi)->fragment.fragmentType == SceneQuery::WFT_PLANE_BOUNDED_REGION);
772	if (!listener->queryResult(const_cast<MovableObject*>(aObj),
773	const_cast<WorldFragment>(&((bi)->fragment))))
774	return;
775	}
776
777	}
778	}
779
780
781	}
782
783	++leaf;
784	}
785
786
787
788	}
789	//-----------------------------------------------------------------------
790	//-----------------------------------------------------------------------
791	BspRaySceneQuery::BspRaySceneQuery(SceneManager* creator)
792	:DefaultRaySceneQuery(creator)
793	{
794	// Add supported fragment types
795	mSupportedWorldFragments.insert(SceneQuery::WFT_SINGLE_INTERSECTION);
796	mSupportedWorldFragments.insert(SceneQuery::WFT_PLANE_BOUNDED_REGION);
797	}
798	//-----------------------------------------------------------------------
799	void BspRaySceneQuery::execute(RaySceneQueryListener* listener)
800	{
801	clearTemporaries();
802	BspLevelPtr lvl = static_cast<BspSceneManager*>(mParentSceneMgr)->getLevel();
803	if (!lvl.isNull())
804	{
805	processNode(
806	lvl->getRootNode(),
807	mRay, listener);
808	}
809	}
810	//-----------------------------------------------------------------------
811	BspRaySceneQuery::~BspRaySceneQuery()
812	{
813	clearTemporaries();
814	}
815	//-----------------------------------------------------------------------
816	void BspRaySceneQuery::clearTemporaries(void)
817	{
818	mObjsThisQuery.clear();
819	std::vector<WorldFragment*>::iterator i;
820	for (i = mSingleIntersections.begin(); i != mSingleIntersections.end(); ++i)
821	{
822	delete *i;
823	}
824	mSingleIntersections.clear();
825	}
826	//-----------------------------------------------------------------------
827	bool BspRaySceneQuery::processNode(const BspNode* node, const Ray& tracingRay,
828	RaySceneQueryListener* listener, Real maxDistance, Real traceDistance)
829	{
830	if (node->isLeaf())
831	{
832	return processLeaf(node, tracingRay, listener, maxDistance, traceDistance);
833	}
834
835	bool res = true;
836	std::pair<bool, Real> result = tracingRay.intersects(node->getSplitPlane());
837	if (result.first && result.second < maxDistance)
838	{
839	// Crosses the split plane, need to perform 2 queries
840	// Calculate split point ray
841	Vector3 splitPoint = tracingRay.getOrigin()
842	+ tracingRay.getDirection() * result.second;
843	Ray splitRay(splitPoint, tracingRay.getDirection());
844
845	if (node->getSide(tracingRay.getOrigin()) == Plane::NEGATIVE_SIDE)
846	{
847	// Intersects from -ve side, so do back then front
848	res = processNode(
849	node->getBack(), tracingRay, listener, result.second, traceDistance);
850	if (!res) return res;
851
852	res = processNode(
853	node->getFront(), splitRay, listener,
854	maxDistance - result.second,
855	traceDistance + result.second);
856	}
857	else
858	{
859	// Intersects from +ve side, so do front then back
860	res = processNode(node->getFront(), tracingRay, listener,
861	result.second, traceDistance);
862	if (!res) return res;
863	res = processNode(node->getBack(), splitRay, listener,
864	maxDistance - result.second,
865	traceDistance + result.second);
866	}
867	}
868	else
869	{
870	// Does not cross the splitting plane, just cascade down one side
871	res = processNode(node->getNextNode(tracingRay.getOrigin()),
872	tracingRay, listener, maxDistance, traceDistance);
873	}
874
875	return res;
876	}
877	//-----------------------------------------------------------------------
878	bool BspRaySceneQuery::processLeaf(const BspNode* leaf, const Ray& tracingRay,
879	RaySceneQueryListener* listener, Real maxDistance, Real traceDistance)
880	{
881	const BspNode::IntersectingObjectSet& objects = leaf->getObjects();
882
883	BspNode::IntersectingObjectSet::const_iterator i, iend;
884	iend = objects.end();
885	//Check ray against objects
886	for(i = objects.begin(); i != iend; ++i)
887	{
888	// cast away constness, constness of node is nothing to do with objects
889	MovableObject* obj = const_cast<MovableObject>(i);
890	// Skip this object if not enabled
891	if(!(obj->getQueryFlags() & mQueryMask) \|\|
892	!((obj->getTypeFlags() & mQueryTypeMask)))
893	continue;
894
895	// check we haven't reported this one already
896	// (objects can be intersecting more than one node)
897	if (mObjsThisQuery.find(obj) != mObjsThisQuery.end())
898	continue;
899
900	//Test object as bounding box
901	std::pair<bool, Real> result =
902	tracingRay.intersects(obj->getWorldBoundingBox());
903	// if the result came back positive and intersection point is inside
904	// the node, fire the event handler
905	if(result.first && result.second <= maxDistance)
906	{
907	if (!listener->queryResult(obj, result.second + traceDistance))
908	return false;
909	}
910	}
911
912
913	// Check ray against brushes
914	if (mQueryTypeMask & SceneManager::WORLD_GEOMETRY_TYPE_MASK)
915	{
916	const BspNode::NodeBrushList& brushList = leaf->getSolidBrushes();
917	BspNode::NodeBrushList::const_iterator bi, biend;
918	biend = brushList.end();
919	bool intersectedBrush = false;
920	for (bi = brushList.begin(); bi != biend; ++bi)
921	{
922	BspNode::Brush* brush = *bi;
923
924
925	std::pair<bool, Real> result = Math::intersects(tracingRay, brush->planes, true);
926	// if the result came back positive and intersection point is inside
927	// the node, check if this brush is closer
928	if(result.first && result.second <= maxDistance)
929	{
930	intersectedBrush = true;
931	if(mWorldFragmentType == SceneQuery::WFT_SINGLE_INTERSECTION)
932	{
933	// We're interested in a single intersection
934	// Have to create these
935	SceneQuery::WorldFragment* wf = new SceneQuery::WorldFragment();
936	wf->fragmentType = SceneQuery::WFT_SINGLE_INTERSECTION;
937	wf->singleIntersection = tracingRay.getPoint(result.second);
938	// save this so we can clean up later
939	mSingleIntersections.push_back(wf);
940	if (!listener->queryResult(wf, result.second + traceDistance))
941	return false;
942	}
943	else if (mWorldFragmentType == SceneQuery::WFT_PLANE_BOUNDED_REGION)
944	{
945	// We want the whole bounded volume
946	assert((*bi)->fragment.fragmentType == SceneQuery::WFT_PLANE_BOUNDED_REGION);
947	if (!listener->queryResult(const_cast<WorldFragment*>(&(brush->fragment)),
948	result.second + traceDistance))
949	return false;
950
951	}
952	}
953	}
954	if (intersectedBrush)
955	{
956	return false; // stop here
957	}
958	}
959
960	return true;
961
962	}
963	//-----------------------------------------------------------------------
964	//-----------------------------------------------------------------------
965	const String BspSceneManagerFactory::FACTORY_TYPE_NAME = "BspSceneManager";
966	//-----------------------------------------------------------------------
967	void BspSceneManagerFactory::initMetaData(void) const
968	{
969	mMetaData.typeName = FACTORY_TYPE_NAME;
970	mMetaData.description = "Scene manager for loading Quake3 .bsp files.";
971	mMetaData.sceneTypeMask = ST_INTERIOR;
972	mMetaData.worldGeometrySupported = true;
973	}
974	//-----------------------------------------------------------------------
975	SceneManager* BspSceneManagerFactory::createInstance(
976	const String& instanceName)
977	{
978	return new BspSceneManager(instanceName);
979	}
980	//-----------------------------------------------------------------------
981	void BspSceneManagerFactory::destroyInstance(SceneManager* instance)
982	{
983	delete instance;
984	}
985
986	}
987

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