normal.h

俄罗斯方块3D 程序+源码俄罗斯方块3D（程序+源码

#ifndef normal_h
#define normal_h

#ifndef NULL
#ifdef  __cplusplus
#define NULL    0
#else
#define NULL    ((void *)0)
#endif
#endif

#define PI    ((FLOAT)  3.141592654f)

template <class T>
void SafeRelease( T &p )
{
	if ( p != NULL )
	{
		p->Release();
		p = NULL;
	}
}

template <class T>
void SafeFree( T &p )
{
	if ( p != NULL )
		p->Free();
}

template <class T>
void SafeDelete( T &p )
{
	if ( p != NULL )
	{
		delete p;
		p = NULL;
	}
}

template <class T>
void SafeDeleteArray( T &p )
{
	if ( p != NULL )
	{
		delete [] p;
		p = NULL;
	}
}

template <class T>
void Swap( T &t1, T &t2 )
{
	T temp;
	temp = t1;
	t1 = t2;
	t2 = temp;
}

#endif