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Alright, I'm trying to call a function from a class in C++ what overides a function from its parent class.

The class is setup:

BaseClass that has the update function declared publicly like this:

virtual void update() = 0;

Then I have the Object class what extends the BaseClass. In this class I declare update again by doing:

virtual void update() override;

Then I have my Player class what has its update function declared like this:

void update() override;

I then store a vector of object and loop through it the vector is declared:

std::vector<Object> _objs

Do I have to create a new vector to loop through to call the right update function or is there some sort of way I can call the right update function when im looping through a array of object?

Biffen
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Oisin100
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    Instead of describing the class setup, why don't you just show us some code? – PC Luddite Sep 19 '15 at 17:10
  • One line of code explains more than hundred lines of prose in most cases. – πάντα ῥεῖ Sep 19 '15 at 17:11
  • possible duplicate of [Making a vector of instances of different subclasses](http://stackoverflow.com/questions/10338548/making-a-vector-of-instances-of-different-subclasses) – Biffen Sep 19 '15 at 17:14
  • It will automatically call the correct override function. That's what overrides are for. – QuentinUK Sep 19 '15 at 17:16
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    @QuentinUK No it won't, because of slicing. – Biffen Sep 19 '15 at 17:17
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  • @Biffen That can be fixed by using a vector of pointers std::vector _objs should be std::vector _objs – QuentinUK Sep 20 '15 at 23:42

1 Answers1

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You need to use either a vector of pointers 

std::vector<Object*>

or smart pointers

std::vector<std::shared_ptr<Object>>

If you don't, adding a Player object to the vector will result in object slicing. Player will be converted to Object, so Object's implementation of update() will be called instead.

PC Luddite
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