1 #ifndef __MISC_NODE_CCNUMBER_CHANGE_H__ 2 #define __MISC_NODE_CCNUMBER_CHANGE_H__ 3  4 #include <vector> 5  6 #include "2d/CCAction.h" 7 #include "2d/CCAnimation.h" 8 #include "2d/CCActionInterval.h" 9 #include "base/CCProtocols.h"10 #include "base/CCVector.h"11 12 //NS_CC_BEGIN13 USING_NS_CC;14 class Node;15 class SpriteFrame;16 class EventCustom;17 18 19 class NumberChange : public ActionInterval20 {21 public:22 23     static NumberChange* create(float duration, int fromNum, int toNum);24 25     virtual NumberChange* clone() const override;26     virtual NumberChange* reverse(void) const  override;27     virtual void startWithTarget(cocos2d::Node *target) override;28     virtual void update(float time) override;29     30 CC_CONSTRUCTOR_ACCESS:31     NumberChange();32     virtual ~NumberChange();33 34     /** initializes the action */35     bool initWithDuration(float duration, int fromNum, int toNum);36 37 protected:38     int _fromNum;39     int _toNum;40 41 private:42     CC_DISALLOW_COPY_AND_ASSIGN(NumberChange);43 };44 45 //NS_CC_END46 47 #endif //__MISC_NODE_CCNUMBER_CHANGE_H__

 1 #include "2d/CCActionInterval.h" 2  3 #include <stdarg.h> 4  5 #include "2d/CCSprite.h" 6 #include "2d/CCNode.h" 7 #include "2d/CCSpriteFrame.h" 8 #include "2d/CCActionInstant.h" 9 #include "base/CCDirector.h"10 #include "base/CCEventCustom.h"11 #include "base/CCEventDispatcher.h"12 #include "platform/CCStdC.h"13 #include "deprecated/CCString.h"14 #include "NumberChange.h"15 16 USING_NS_CC;17 //NS_CC_BEGIN18 NumberChange::NumberChange(){19 }20 21 NumberChange::~NumberChange(){22 }23 24 NumberChange* NumberChange::create(float duration, int fromNum, int toNum)25 {26     NumberChange *ret = new (std::nothrow) NumberChange();27     ret->initWithDuration(duration, fromNum, toNum);28     ret->autorelease();29 30     return ret;31 }32 33 34 bool NumberChange::initWithDuration(float duration, int fromNum, int toNum)35 {36     if (ActionInterval::initWithDuration(duration))37     {38         _fromNum = fromNum;39         _toNum = toNum;40         return true;41     }42 43     return false;44 }45 46 NumberChange* NumberChange::clone() const47 {48     // no copy constructor49     auto a = new (std::nothrow) NumberChange();50     a->initWithDuration(_duration, _fromNum, _toNum);51     a->autorelease();52     return a;53 }54 55 void NumberChange::startWithTarget(cocos2d::Node *target)56 {57     ActionInterval::startWithTarget(target);58     LabelProtocol *pLabel = dynamic_cast<LabelProtocol*>(target);59     if (pLabel)60     {61         std::string numStr = cocos2d::StringUtils::format("%i", _fromNum);62         pLabel->setString(numStr.c_str());63     }64 }65 66 NumberChange* NumberChange::reverse() const67 {68     return NumberChange::create(_duration, _toNum, _fromNum);69 }70 71 72 void NumberChange::update(float t)73 {74     LabelProtocol *pLabel = dynamic_cast<LabelProtocol*>(_target);75     if (pLabel)76     {77         int tempNum = (_toNum - _fromNum) * t;78         int num = _fromNum + tempNum;79         std::string numStr = cocos2d::StringUtils::format("%i", num);80         pLabel->setString(numStr.c_str());81     }82 }83 84 //NS_CC_END