Fix motion_thread save-restore (#351)

dlls/triggers.cpp

@@ -4568,6 +4568,7 @@ void CTriggerMotion::Use( CBaseEntity *pActivator, CBaseEntity *pCaller, USE_TYP
 class CMotionThread : public CPointEntity
 {
 public:
+	void Spawn();
 	void Think( void );
 
 	virtual int		Save( CSave &save );
@@ -4581,7 +4582,7 @@ public:
 	EHANDLE m_hLocus;
 	EHANDLE m_hTarget;
 };
-LINK_ENTITY_TO_CLASS( motion_thread, CPointEntity );
+LINK_ENTITY_TO_CLASS( motion_thread, CMotionThread );
 
 TYPEDESCRIPTION	CMotionThread::m_SaveData[] = 
 {
@@ -4595,6 +4596,11 @@ TYPEDESCRIPTION	CMotionThread::m_SaveData[] =
 
 IMPLEMENT_SAVERESTORE(CMotionThread,CPointEntity);
 
+void CMotionThread::Spawn() //AJH
+{
+	pev->classname = MAKE_STRING("motion_thread"); //We need this for save/restore to work
+}
+
 void CMotionThread::Think( void )
 {
 	if( m_hLocus == 0 || m_hTarget == 0 )
@@ -4803,6 +4809,7 @@ void CMotionManager::Affect( CBaseEntity *pTarget, CBaseEntity *pActivator )
 
 	CMotionThread *pThread = GetClassPtr( (CMotionThread*)NULL );
 	if (pThread == NULL) return; //error?
+	pThread->Spawn();
 	pThread->m_hLocus = pActivator;
 	pThread->m_hTarget = pTarget;
 	pThread->m_iszPosition = m_iszPosition;