use std::function in schedule

Question

I am using cocos2d-x for a while, there is a problem constantly boring me: I want delay executes a function such as "void f(int a)" by schedule. But for cocos2d-x, it can not pass a variable on stack:

int a = 10; // call f(a) in delay

Of course I can use CCInteger, CCxxx, but it was too painful to do it. It just a copy of cocos2d, really troublesome in cpp.

So, is there a easy way let it to executes a std::bind(f, a)?

Answer 1

You can try c++11 feature , here is the code by my self:

Define CallbackHelper Class

class CallbackHelper : public CCObject
{
private:
    std::function<void ()> _func;
public:
    static CallbackHelper* create(std::function<void ()> func) {
    CallbackHelper* ret = new CallbackHelper();
    if (ret) {
        ret->autorelease();
    } else {
        CC_SAFE_DELETE(ret);
    }
        ret->_func = func;
        return ret;
    }
    void run() {
        _func();
    }    
};

Make CCCallFunC:

int a = 10;
CallbackHelper* callback = CallbackHelper::create([a](){
    cout<<a<<endl;
});
CCCallFunc::create(callback, callfunc_selector(CallbackHelper::run));

Good Luck