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			103 lines
		
	
	
	
		
			3.5 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
			
		
		
	
	
			103 lines
		
	
	
	
		
			3.5 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
| #include "bulletshape.hpp"
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| 
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| #include <stdexcept>
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| #include <string>
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| 
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| #include <BulletCollision/CollisionShapes/btBoxShape.h>
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| #include <BulletCollision/CollisionShapes/btScaledBvhTriangleMeshShape.h>
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| #include <BulletCollision/CollisionShapes/btCompoundShape.h>
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| #include <BulletCollision/CollisionShapes/btHeightfieldTerrainShape.h>
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| 
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| namespace Resource
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| {
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| namespace
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| {
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|     CollisionShapePtr duplicateCollisionShape(const btCollisionShape *shape)
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|     {
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|         if (shape == nullptr)
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|             return nullptr;
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| 
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|         if (shape->isCompound())
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|         {
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|             const btCompoundShape *comp = static_cast<const btCompoundShape*>(shape);
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|             std::unique_ptr<btCompoundShape, DeleteCollisionShape> newShape(new btCompoundShape);
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| 
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|             for (int i = 0, n = comp->getNumChildShapes(); i < n; ++i)
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|             {
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|                 auto child = duplicateCollisionShape(comp->getChildShape(i));
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|                 const btTransform& trans = comp->getChildTransform(i);
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|                 newShape->addChildShape(trans, child.release());
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|             }
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| 
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|             return newShape;
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|         }
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| 
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|         if (shape->getShapeType() == TRIANGLE_MESH_SHAPE_PROXYTYPE)
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|         {
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|             const btBvhTriangleMeshShape* trishape = static_cast<const btBvhTriangleMeshShape*>(shape);
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|             return CollisionShapePtr(new btScaledBvhTriangleMeshShape(const_cast<btBvhTriangleMeshShape*>(trishape), btVector3(1.f, 1.f, 1.f)));
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|         }
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| 
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|         if (shape->getShapeType() == BOX_SHAPE_PROXYTYPE)
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|         {
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|             const btBoxShape* boxshape = static_cast<const btBoxShape*>(shape);
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|             return CollisionShapePtr(new btBoxShape(*boxshape));
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|         }
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| 
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|         if (shape->getShapeType() == TERRAIN_SHAPE_PROXYTYPE)
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|             return CollisionShapePtr(new btHeightfieldTerrainShape(static_cast<const btHeightfieldTerrainShape&>(*shape)));
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| 
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|         throw std::logic_error(std::string("Unhandled Bullet shape duplication: ") + shape->getName());
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|     }
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| 
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|     void deleteShape(btCollisionShape* shape)
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|     {
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|         if (shape->isCompound())
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|         {
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|             btCompoundShape* compound = static_cast<btCompoundShape*>(shape);
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|             for (int i = 0, n = compound->getNumChildShapes(); i < n; i++)
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|                 if (btCollisionShape* child = compound->getChildShape(i))
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|                     deleteShape(child);
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|         }
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| 
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|         delete shape;
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|     }
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| }
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| 
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| void DeleteCollisionShape::operator()(btCollisionShape* shape) const
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| {
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|     deleteShape(shape);
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| }
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| 
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| BulletShape::BulletShape(const BulletShape ©, const osg::CopyOp ©op)
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|     : mCollisionShape(duplicateCollisionShape(copy.mCollisionShape.get()))
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|     , mAvoidCollisionShape(duplicateCollisionShape(copy.mAvoidCollisionShape.get()))
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|     , mCollisionBox(copy.mCollisionBox)
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|     , mAnimatedShapes(copy.mAnimatedShapes)
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|     , mFileName(copy.mFileName)
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|     , mFileHash(copy.mFileHash)
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| {
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| }
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| 
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| void BulletShape::setLocalScaling(const btVector3& scale)
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| {
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|     mCollisionShape->setLocalScaling(scale);
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|     if (mAvoidCollisionShape)
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|         mAvoidCollisionShape->setLocalScaling(scale);
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| }
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| 
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| osg::ref_ptr<BulletShapeInstance> makeInstance(osg::ref_ptr<const BulletShape> source)
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| {
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|     return {new BulletShapeInstance(std::move(source))};
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| }
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| 
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| BulletShapeInstance::BulletShapeInstance(osg::ref_ptr<const BulletShape> source)
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|     : mSource(std::move(source))
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| {
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|     mCollisionBox = mSource->mCollisionBox;
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|     mAnimatedShapes = mSource->mAnimatedShapes;
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|     mCollisionShape = duplicateCollisionShape(mSource->mCollisionShape.get());
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|     mAvoidCollisionShape = duplicateCollisionShape(mSource->mAvoidCollisionShape.get());
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| }
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| 
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| }
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