vector assignment problem*solved*
Author
ok i have a function like this
int Map::Set_Equal(const char* SZ_FILENAME,vector<Tile*> *N_TList, vector<Event*> *N_EList)
{
ifstream fin;
fin.open(SZ_FILENAME);
for(int i = 0; i < 50; i++)
{
for(int j = 0; j < 50; j++)
{
fin >> A_Map[j];
};
};
Map_List.clear();
for(int l = 0; l < N_TList->size(); l++)
{
(Map_List)[l] = ((*N_TList)[l]);
};
Event_List.clear();
for(int k = 0; k < N_EList->size(); k++)
{
(Event_List)[k] = ((*N_EList)[k]);
};
fin.close();
};
this fills the member vector with an external vector (well at least it should) but its not and i dont know why, im calling the function, im imputing the function in the source with all valid paramters and Map_List isnt getting filled (hmm Event_List IS)
Map_List is a vector<Tile*>
N_TList is a vector<Tile*> *
(same thing with the event vectors but <Event*>)
thanks as always[smile]
ps. the functin gets called only once
[Edited by - raptorstrike on December 4, 2004 5:45:07 PM]
std::vector implements equal operator. You do not need to copy each element one by one. Just set it equal to the parameter:
Map_List = N_TList;
Oh, you must also pass your vector by reference instead of pointer. It's better that way.
int Map::Set_Equal( const char* SZ_FILENAME, vector<Tile*>& N_TList, vector<Event*>& N_EList )
{
Map_List = N_TList;
}
Map_List = N_TList;
Oh, you must also pass your vector by reference instead of pointer. It's better that way.
int Map::Set_Equal( const char* SZ_FILENAME, vector<Tile*>& N_TList, vector<Event*>& N_EList )
{
Map_List = N_TList;
}
or if you want another way of doing it:
dest.resize( src.size() );
std::copy( src.begin(), src.end(), dest.begin() );
dest.resize( src.size() );
std::copy( src.begin(), src.end(), dest.begin() );
Author
ok well i did what you guys said and it looks much better now but still no results
Author
woops scratch that the vector is now getting asigned but there is one last thing,
is accessing a vector<Tile*> elements with the [] operater valid?
because i have this line
if(A_Map->Map_List[A_Map->A_Map[tileY][tileX]]->Filled == true)
{
...
and my debugger leads me back too it so i cant help but think it has somthing to do with the way im acsessing the elements
A_Map is a int[][] tileY and tileX are ints and Map_List[A_Map[][]] HAS been defined
is accessing a vector<Tile*> elements with the [] operater valid?
because i have this line
if(A_Map->Map_List[A_Map->A_Map[tileY][tileX]]->Filled == true)
{
...
and my debugger leads me back too it so i cant help but think it has somthing to do with the way im acsessing the elements
A_Map is a int[][] tileY and tileX are ints and Map_List[A_Map[][]] HAS been defined
Author
ok never mind it was a big mistake on my part i was putting the function that called it BEFORE the intialization of SDL thanks a ton
This topic is closed to new replies.
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