cocos 屏幕抖动，3.10可以用

cocos 屏幕抖动，3.10可以用  ，x->runAction(CCShake::create(1.0f, 5));

#ifndef __SHAKE_H__  #define __SHAKE_H__  #include "cocos2d.h"  USING_NS_CC;class CCShake : public cocos2d::CCActionInterval{public:CCShake();// Create the action with a time and a strength (same in x and y)  static CCShake *create(float d, float strength);// Create the action with a time and strengths (different in x and y)  static CCShake *createWithStrength(float d, float strength_x, float strength_y);bool initWithDuration(float d, float strength_x, float strength_y);protected:void startWithTarget(cocos2d::CCNode *pTarget);void update(float time);void stop(void);CCPoint m_StartPosition;// Strength of the action  float m_strength_x, m_strength_y;};#endif //__SHAKE_H__  

#include "CShake.h"  
#include "cocos2d.h"  
USING_NS_CC;


// not really useful, but I like clean default constructors  
CCShake::CCShake() : m_strength_x(0), m_strength_y(0)
{
}


CCShake *CCShake::create(float d, float strength)
{
// call other construction method with twice the same strength  
return createWithStrength(d, strength, strength);
}


CCShake *CCShake::createWithStrength(float duration, float strength_x, float strength_y)
{
CCShake *pRet = new CCShake();


if (pRet && pRet->initWithDuration(duration, strength_x, strength_y))
{
pRet->autorelease();
}
else
{
CC_SAFE_DELETE(pRet);
}




return pRet;
}


bool CCShake::initWithDuration(float duration, float strength_x, float strength_y)
{
if (CCActionInterval::initWithDuration(duration))
{
m_strength_x = strength_x;
m_strength_y = strength_y;


return true;
}


return false;
}


// Helper function. I included it here so that you can compile the whole file  
// it returns a random value between min and max included  
static float fgRangeRand(float min, float max)
{
float rnd = ((float)rand() / (float)RAND_MAX);
return rnd * (max - min) + min;
}


void CCShake::update(float dt)
{
float randx = fgRangeRand(-m_strength_x, m_strength_x) * dt;
float randy = fgRangeRand(-m_strength_y, m_strength_y) * dt;


// move the target to a shaked position  
//m_pTarget->setPosition(ccpAdd(m_StartPosition, ccp(randx, randy)));
_target->setPosition(ccpAdd(m_StartPosition, ccp(randx, randy)));
}


void CCShake::startWithTarget(CCNode *pTarget)
{
CCActionInterval::startWithTarget(pTarget);


// save the initial position  
m_StartPosition = pTarget->getPosition();
 
}


void CCShake::stop(void)
{
// Action is done, reset clip position  
this->getTarget()->setPosition(m_StartPosition);


CCActionInterval::stop();
}