C++ Destroying struct from inside of it - c++

Question

so I have a struct bullet:
struct Bullet {
int posX; int posY;
int verticalBulLimiter = 0;
int verticalBulLimiterCheck = 35; // aka movement Speed
void draw() {
gotoxy(posX,posY);
setColor(14);
cout << bullet << endl;
if (posY - 1 == 0){
/// I want to delete struct here
}
if (verticalBulLimiter == verticalBulLimiterCheck) {
posY--;
clearPixel(posX, posY + 1);
verticalBulLimiter = 0;
}
else {
verticalBulLimiter++;
}
}
};
as You can see I want to delete the struct once it's variable posY reaches certain value.
So how do I do that. Do I tried using keyword "this" but I dont really know how does it work. Is there any function for 'self destruction' ?

Answer 1

While this can be possible using delete this, it is most definitely not what you want.
Objects in C++ do not usually own themselves, so you should have the owner of the bullet (maybe a scene or world entity) delete it.

Answer 2

Instead of trying to "destroy a struct from within", you should be checking and removing instances of struct that have met some conditions.
There's an algorithm that does just that, like so.
#include <vector>
struct Bullet { ... };
std::vector<Bullet> bullets;
void clean_bullets(){
bullets.erase(
std::remove_if(bullets.begin(), bullets.end(),
[](const Bullet& i){return /* your condition when a bullet should be removed */}),
v.end()
);
}
int main(){
// Add some bullets
bulltes.push_back({/* create a bullet here */});
.
.
.
clean_bullets();
}
The std::vector<Bullet> bullets contains all the bullets, and is responsible for memory, removing, adding elements etc.
You can read more about std::vector here: https://en.cppreference.com/w/cpp/container/vector
And about removing the elements like above, it's called the remove/erase idiom https://en.wikibooks.org/wiki/More_C%2B%2B_Idioms/Erase-Remove