C++, Adding conditional statements in class vars - c++

Question

Sorry, but I have to repeat the same question as I asked before "C++, Adding conditions in class vars".
I am using SDL2 here.
In obj.h: (excluding preprocessor commands)
class obj {
public:
SDL_Rect clip;
void addCollideWith( SDL_Rect rect );
void hasCollide();
void clearCollideWith();
private:
std::list<bool *> collideWith;
};
In obj.cpp: (excluding preprocessor commands)
void obj::addCollideWith( SDL_Rect rect )
{
collideWith.push_back(SDL_HasIntersection(obj.clip, rect));
}
void obj::hasCollide()
{
bool retval = true;
for (std::list<bool *>::iterator it = collideWith.begin(); it != collideWith.end(); it++)
{
retval = retval && **it;
}
return retval;
}
void clearCollideWith()
{
collideWith.clear();
}
Inside main function, I am saying that the object moves by one pixel and every time when it moves by one pixel, it checks for collision with other objects. I cleared the pointer thing '*' as I am not putting in variables as you can see: collideWith.push_back(SDL_HasIntersection(obj.clip, rect));. What I do is to make it move a pixel, clear collideWith and add collideWith condition again for updating whether it is true or false.
Now, whats the problem?
Its making the program really really slow! If I remove collideWith thing and then, starts the program, it gets a lot more smoother. Now, what I want, is to store the statement rather than true or false. std::list takes:
collideWith.pushBack(true /*OR*/ false);
But what I want is:
collideWith.pushBack(/*statement determining whether it is true or false*/ var1 > var2);
Please do complain if context is missing or the question is somehow, not understandable!
(NOTE: Context related to moving the object and declaring obj clip sub-vars is not mentioned as they are not a part of question.)

Answer 1

You could try to replace
std::list<bool *> collideWith;
with
std::list<SDL_Rect> collideWith;
in order to track of the rectangles that you want to considere.
The implementation could be :
void obj::addCollideWith( SDL_Rect rect )
{
collideWith.push_back(rect);
}
// to test if it collides with at least one rectangle
bool obj::hasCollide()
{
bool retval = false;
for (std::list<SDL_Rect>::iterator it = collideWith.begin(); it != collideWith.end(); it++)
{
retval = retval || SDL_HasIntersection(obj.clip, *it);
}
return retval;
}
// to test if it collides with all rectangles
/* bool obj::hasCollide()
{
bool retval = true;
for (std::list<SDL_Rect>::iterator it = collideWith.begin(); it != collideWith.end(); it++)
{
retval = retval && SDL_HasIntersection(obj.clip, *it);
}
return retval;
} */