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template <typename T> class FromToWithDuration2 { private: T originFrom; T from; T to; float duration; T dx; // bool positive; float flowTime; bool nextTurnIsFinish; public: FromToWithDuration2(){} FromToWithDuration2(T _from, T _to, float _duration) : originFrom(_from), nextTurnIsFinish(false) { nextTurnIsFinish = false; flowTime = 0.f; from = _from; to = _to; duration = _duration; dx = (to - from) / duration; // positive } void init(T _from, T _to, float _duration) { nextTurnIsFinish = false; flowTime = 0.f; originFrom = _from; from = _from; to = _to; duration = _duration; if(duration != 0) dx = (to - from) / duration; // positive } bool step(float dt) { if(nextTurnIsFinish) return false; // finish flowTime += dt; if(duration) from = from + dx * dt; else from = to; if(duration <= flowTime) { from = to; nextTurnIsFinish = true; } return true; } T getValue(){return from;} T getTo(){return to;} }; // addChild 되면 내부적으로 임무수행이 마쳐지면 알아서 removeChild 됨. template <typename T> class KSGradualValue : public CCNode { protected: std::function<void(T)> m_f; std::function<void(T)> m_fFinish; T m_a; T m_b; T m_s; FromToWithDuration2<T> fromTo; public: virtual ~KSGradualValue(){ } static KSGradualValue* create(T a, T b, float s, std::function<void(T)> __f) { KSGradualValue* newO = new KSGradualValue; newO->init(a, b, s, __f); newO->autorelease(); return newO; } static KSGradualValue* create(T a, T b, float s, std::function<void(T)> __f, std::function<void(T)> __finish) { KSGradualValue* newO = new KSGradualValue; newO->init(a, b, s, __f, __finish); newO->autorelease(); return newO; } bool init(T a, T b, float s, std::function<void(T)> __f, std::function<void(T)> __finish) { m_a = a; m_b = b; m_f = __f; m_fFinish = __finish; fromTo.init(m_a, m_b, s); scheduleUpdate(); return true; } bool init(T a, T b, float s, std::function<void(T)> __f) { return init(a, b, s, __f, []{}); } void update(float dt) { dt = 1/60.f; T val = fromTo.getValue(); m_f(val); bool result = fromTo.step(dt); if(result) { } else { m_fFinish(val); removeFromParent(); unscheduleUpdate(); } } }; float 예제 // 0.0f 에서 1.f 로 3 초 동안에 걸쳐 변화함. // addChild 되면 내부적으로 임무수행이 마쳐지면 알아서 removeChild 됨. addChild(KSGradualValue<float>::create(0.f, 1.f, 3f, [=](float t) { CCLog("%f", t); }, [=](float t) { CCLog("finish! %f", t); })); CCPoint 예제 // (300, 200) 에서 (200, 300) 로 3 초 동안에 걸쳐 변화함. // addChild 되면 내부적으로 임무수행이 마쳐지면 알아서 removeChild 됨. addChild(KSGradualValue<CCPoint>::create(ccp(300, 200), ccp(200, 300), 3f, [=](CCPoint t) { CCLog("%f %f", t.x, t.y); }, [=](CCPoint t) { CCLog("finish! %f %f", t.x ,t.y); })); 중첩가능함. addChild(KSGradualValue<CCPoint>::create(a, b, s, [=](CCPoint t){ ... }, [=](CCPoint t){ addChild(KSGradualValue<CCPoint>::create(a, b, s, [=](CCPoint y){ ... }, [=](CCPoint y){ ....} } );