Store Function Pointers to any Member Function

Question

My Event Manager

For a event manager I need to store many pointers to functions in a vector to call them when the event is triggered. (I will provide the source co

Answer 1

This is the typical case where you should use polymorphism instead of function (or member function) pointers.

As you noted, your component classes should inherit from a common class Component, which contains virtual method(s) representing the event(s):

class Component
{
public:
    virtual void OnPlayerLevelUp()
    {
    }
};

class ComponentSound : public Component
{
public:
     // override it
    void OnPlayerLevelUp()
    {
        // do the actual work
    }
};

Your ListEvent type will now look like this:

typedef unordered_map> ListEvent;

As for the optional void* paramenter in event methods, you can specify it as an optional parameter, but the fact that it's a void* is a bad sign (use of void* can lead to loss of type safety), so I would suggest that you look for a different way to achieve what you want.