I'm kinda new on dynamic memory allocation (no pun intended ^_^), and I don't know how do this: I have a 3 layered map-structure of variable width and height in a class, and I want to allocate memory to it. Is this the way to do it, cause I don't know how to use new with multidimensional arrays.

class Map
{
   Map(int width, int height);
   // ...
   Tile _content[3][][];
};


Map::Map(int width, int height)
{
   for(int layer = 0; layer < 3; ++layer)
      _content[layer] = new Tile[width][height];
}
 

Edited by - Jedyte on September 11, 2001 3:56:53 PM

quote:
I'm kinda new on dynamic memory allocation

heheh2hhaha4hha, heh, hoh, weeeee

    template<typename T>class CArray3D{public:	CArray3D(int x, int y, int z) : m_cRows(x), m_cCols(y), m_cDepth(z), m_Array(0)	{	m_Array = new (T**)[m_cRows];	_ASSERT(m_Array);	for(int i=0; i<m_cRows; i++)		{		m_Array[i] = new (T*)[m_cCols];		for(int j=0; j<m_cCols; j++)			m_Array[i][j] = new T[m_cDepth];		}	}virtual ~CArray3D()	{	for(int i=0; i<m_cRows; i++)		{		for(int j=0; j<m_cCols; j++)			delete[] m_Array[i][j];		delete[] m_Array[i];		}	delete[] m_Array;	}T** operator[](int i)	{	_ASSERT( (i>=0) && (i<m_cRows) );	return m_Array[i];	}T& operator()(int i, int j, int k)	{	_ASSERT( (i>=0) && (i<m_cRows) );	_ASSERT( (j>=0) && (j<m_cCols) );	_ASSERT( (k>=0) && (k<m_cDepth) );	return m_Array[i][j][k];	}protected:	T*** m_Array;	const int m_cRows;	const int m_cCols;	const int m_cDepth;private:	//You can (should) make this public if you implement it	CArray3D(const CArray3D&);};    

Magmai Kai Holmlor
- Not For Rent

Missed the 3D part first time arround...

Edited by - Magmai Kai Holmlor on September 11, 2001 10:05:01 PM

Tanx!
So it as I feared, you have to iterate through te structure.
Wasn''t sure you could allocate mem in an already dynamically allocated structure..