c++ - Pointer to array of class functions -


i'm looking here.

my class

leveleditor

has functions this:

bool setsinglemast(game*, gamearea*, gamearea*, vector<iship*>*); bool setdoublemast(game*, gamearea*, gamearea*, vector<iship*>*); ...

in main.cpp make array of pointers leveleditor object's functions. i'm doing this:

bool (*createships[2])(game*, gamearea*, gamearea*, vector<iship*>*) =  {leveledit->setsinglemast, leveledit->setdoublemast, ...};

but gives me error:

error c2440: 'initializing' : cannot convert 'overloaded-function' 'bool (__cdecl *)(game *,gamearea *,gamearea *,std::vector<_ty> *)' [     _ty=iship * ] none of functions name in scope match target type

i don't know mean. can me?

you can't use ordinary function pointers point non-static member functions; need pointers-to-members instead.

bool (leveleditor::*createships[2])(game*, gamearea*, gamearea*, vector<iship*>*) = {&leveleditor::setsinglemast, &leveleditor::setdoublemast};

and need object or pointer call them with:

(level_editor->*createships[1])(game, area, area, ships);

although, assuming can use c++11 (or boost), might find simpler use std::function wrap kind of callable type:

using namespace std::placeholders; std::function<bool(game*, gamearea*, gamearea*, vector<iship*>*)> createships[2] = {     std::bind(&leveleditor::setsinglemast, level_editor, _1, _2, _3, _4),     std::bind(&leveleditor::setdoublemast, level_editor, _1, _2, _3, _4) };  createships[1](game, area, area, ships);

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