genesis-3d_engine/Engine/app/physXfeature/physicsCore/PhysicsEntity.cc

/****************************************************************************
Copyright (c) 2011-2013,WebJet Business Division,CYOU

http://www.genesis-3d.com.cn

Permission is hereby granted, free of charge, to any person obtaining a copy
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THE SOFTWARE.
****************************************************************************/
#if __USE_PHYSX__ || __GENESIS_EDITOR__
#include "stdneb.h"
#include "appframework/actor.h"
#include "PhysicsEntity.h"
#include "PhysicsUtil.h"
#include "PhysicsShape.h"
#include "PhysicsServer.h"
#include "PhysicsDynamic.h"
#include "PhysicsStatic.h"
#include "PhysicsRole.h"
#include "math/matrix44.h"
#include "math/vector.h"
#include "PhysicsServer.h"
#include "physXfeature/UserReport.h"
#include "physXfeature/PhysicsBodyComponent.h"
#include "PxRigidActor.h"
#include "PxScene.h"
namespace App
{
	__ImplementClass(PhysicsEntity, 'PYET', Core::RefCounted);

	PhysicsEntity::PhysicsEntity()
		: m_IsActive(false)
		, m_eType(PHYSICSNONE)
		, m_eGroup(0)
		, m_IsCopyed(false)
		, m_pComponent(NULL)
		, m_pCallBack(NULL)
	{
	}

	PhysicsEntity::~PhysicsEntity()
	{
		OnDestory();
	}

	GPtr<PhysicsEntity> PhysicsEntity::Create(GPtr<PhysicsBodyComponent> body, PhysicsType type /* = PHYSDYNAMIC */)
	{
		GPtr<PhysicsEntity> pEntity(NULL);
		switch (type)
		{
		case PHYSICSDYNAMIC:
			pEntity = PhysicsDynamic::Create();
			pEntity->m_pComponent = body.get();
			break;
		case PHYSICSSTATIC:
			pEntity = PhysicsStatic::Create();
			pEntity->m_pComponent = body.get();
			break;
		case PHYSICSCONTROLLER:
			pEntity = PhysicsRole::Create();
			pEntity->m_pComponent = body.get();
			break;
		default:
			break;
		}
		return pEntity;
	}

	bool PhysicsEntity::OnActivate()
	{
		m_IsActive = true;
		if ( !IsValid() )
		{
			OnCreate(m_pComponent);
		}
		PxRigidActor* _pPxActor = GetRigidActor();
		if ( _pPxActor && _pPxActor->getScene() == NULL )
		{
			PhysicsServer::Instance()->GetPhysXScene()->addActor(*_pPxActor);
		}
		PhysicsServer::Instance()->AttachPhysicsEntity(this);
		return true;
	}

	bool PhysicsEntity::OnDeactivate()
	{
		m_IsActive = false;

		OnDestory();
		PhysicsServer::Instance()->DettachPhysicsEntity(this);
		return true;
	}

	GPtr<PhysicsShape> PhysicsEntity::InsertShape( PhyXShapeType type, int index )
	{
		GPtr<PhysicsShape> _pShape = PhysicsShape::Create(type);
		_pShape->SetPhysicsEntity(this);
		if ( index > m_arrPhysicsShapePtr.Size() )
		{
			index = m_arrPhysicsShapePtr.Size();
		}
		if(index < 0)
		{
			index = 0;
		}
		if ( _pShape.isvalid() )
		{
			m_arrPhysicsShapePtr.Insert(index,_pShape);
			if ( IsActive() )
			{
				_pShape->OnCreate(m_pComponent);
			}
			if ( GetRigidActor() )
			{
				_pShape->CreatePxShape(GetRigidActor(),m_eGroup);
				UpdateEntityMass();
			}
		}

		return _pShape;
	}

	bool PhysicsEntity::InsertShape( GPtr<PhysicsShape> pShape, int index )
	{
		if (pShape.isvalid())
		{
			bool _ret = true;
			m_arrPhysicsShapePtr.Insert(index,pShape);// Regardless the shape can not be used, we insert it in the map
			if ( !pShape->IsValid() )
			{
				_ret = pShape->OnCreate(m_pComponent);
			}
			if ( _ret )
			{
				if (GetRigidActor())
				{
					pShape->CreatePxShape(GetRigidActor(),m_eGroup);
					UpdateEntityMass();
				}
				return true;
			}
		}
		return false;
	}

	GPtr<PhysicsShape> PhysicsEntity::ReplaceShape( PhyXShapeType type, int index )
	{
		GPtr<PhysicsShape> _pShape(NULL);
		if ( index >= 0 && index < m_arrPhysicsShapePtr.Size() )
		{
			_pShape = PhysicsShape::Create(type);
			_pShape->SetPhysicsEntity(this);
			if ( _pShape.isvalid() )
			{
				m_arrPhysicsShapePtr[index]->ReleasePxShape();
				m_arrPhysicsShapePtr[index] = _pShape;
				if ( IsActive() && m_arrPhysicsShapePtr[index]->OnCreate(m_pComponent) )
				{
					m_arrPhysicsShapePtr[index]->CreatePxShape(GetRigidActor(),m_eGroup);
					UpdateEntityMass();
				}
			}
		}
		return _pShape;
	}

	bool PhysicsEntity::ReplaceShape( GPtr<PhysicsShape> pShape, int index )
	{
		if (pShape.isvalid() && index>=0 && index<m_arrPhysicsShapePtr.Size())
		{
			bool _ret = true;
			m_arrPhysicsShapePtr[index]->ReleasePxShape();
			m_arrPhysicsShapePtr[index] = pShape;// Regardless the shape can not be used, we use it instead of the original
			if ( !pShape->IsValid() )
			{
				_ret = pShape->OnCreate(m_pComponent);
			}
			if ( _ret )
			{
				pShape->CreatePxShape(GetRigidActor(),m_eGroup);
				UpdateEntityMass();
				return true;
			}
		}
		return false;
	}

	GPtr<PhysicsShape> PhysicsEntity::RemoveShape( int index )
	{
		if ( index >= 0 && index < m_arrPhysicsShapePtr.Size() )
		{
			GPtr<PhysicsShape> _pShape = m_arrPhysicsShapePtr[index];
			_pShape->ReleasePxShape();
			m_arrPhysicsShapePtr.EraseIndex(index);
			UpdateEntityMass();
			return _pShape;
		}
		return NULL;
	}

	bool PhysicsEntity::RemoveShape( GPtr<PhysicsShape> pShape )
	{
		for ( int i=0; i<m_arrPhysicsShapePtr.Size(); ++i )
		{
			if ( pShape == m_arrPhysicsShapePtr[i] )
			{
				return RemoveShape(i).isvalid();
			}
		}
		return false;
	}

	int PhysicsEntity::FindShape( GPtr<PhysicsShape> pShape )
	{
		for ( int i=0; i<m_arrPhysicsShapePtr.Size(); ++i )
		{
			if ( pShape == m_arrPhysicsShapePtr[i] )
			{
				return i;
			}
		}
		return -1;
	}

	void PhysicsEntity::SetGroupID( App::LayerID layer )
	{
		if ( layer == m_eGroup )
		{
			return;
		}
		m_eGroup = layer;
		for ( int i=0; i<m_arrPhysicsShapePtr.Size(); ++i )
		{
			m_arrPhysicsShapePtr[i]->SetGroup(layer);
		}
	}

	GPtr<PhysicsEntity> PhysicsEntity::GetEntityInActor(Actor* pActor)
	{
		if ( pActor )
		{
			GPtr<Component> _pComponent = pActor->FindComponent(PhysicsBodyComponent::RTTI);
			if ( _pComponent.isvalid() )
			{
				GPtr<PhysicsBodyComponent> _pBody = _pComponent.downcast<PhysicsBodyComponent>();
				return _pBody->GetEntity();
			}
		}
		return NULL;
	}

	inline GPtr<PhysicsShape> PhysicsEntity::GetShape(int index)
	{
		if ( index >= 0 && index < m_arrPhysicsShapePtr.Size() )
		{
			return m_arrPhysicsShapePtr[index];
		}
		return NULL;
	}

	bool PhysicsEntity::CopyFrom( GPtr<PhysicsEntity> src )
	{
		m_eGroup = src->GetGroupID();
		for ( int i=0; i<src->GetShapeCount(); ++i )
		{
			GPtr<PhysicsShape> _pNewShape = PhysicsShape::Create(src->GetShape(i)->GetType());
			_pNewShape->SetPhysicsEntity(this);
			if ( _pNewShape.isvalid() )
			{
				bool _ret = true;
				_ret &= _pNewShape->CopyFrom(src->GetShape(i));
				if ( _ret )
				{
					m_arrPhysicsShapePtr.Append(_pNewShape);
				}
				else
				{
					n_warning("The Copy of PhysicsShape is failed at the index of %d\n", i);
				}
			}
		}
		return true;
	}

	bool PhysicsEntity::OnDestory()
	{
		for ( int i=0; i<m_arrPhysicsShapePtr.Size(); ++i )
		{
			m_arrPhysicsShapePtr[i]->OnDestory();
		}
		return true;
	}

	void PhysicsEntity::Save( AppWriter* pSerialize )
	{
		pSerialize->SerializeUInt("GroupID",m_eGroup);
		pSerialize->SerializeInt("ShapeCount",m_arrPhysicsShapePtr.Size());
		for ( int i=0; i<m_arrPhysicsShapePtr.Size(); ++i )
		{
			pSerialize->SerializeUInt("ShapeType",m_arrPhysicsShapePtr[i]->GetType());
			m_arrPhysicsShapePtr[i]->Save(pSerialize);
		}
	}

	void PhysicsEntity::Load( Version ver, AppReader* pReader )
	{
		pReader->SerializeUInt("GroupID",m_eGroup);

		int _shapeCount = 0;
		pReader->SerializeInt("ShapeCount", _shapeCount);
		for ( int i=0; i<_shapeCount; ++i )
		{
			uint _shapeType = PRIMITIVE;
			pReader->SerializeUInt("ShapeType", _shapeType);
			GPtr<PhysicsShape> _pShape = PhysicsShape::Create((PhyXShapeType)_shapeType);
			n_assert(_pShape.isvalid());
			_pShape->Load(ver,pReader);
			m_arrPhysicsShapePtr.Append(_pShape);
		}
	}

}
#endif