cocos2dx全屏抖動，個別對象抖動

[cpp]?view plain?copy

/**?

?desc:讓指定控件抖動?

?一個CCNode同時執行多個CCShake動作,或者一個CCShake沒有完又執行一個CCShake的話就會出現問題,會出現偏移的現象!?

??

?解決方案:?

?1).不要同時執行多個CCShake動作.?

?2.自己外部記錄這個CCNode的位置,執行完成后手動setPosition();?

?*/??

#ifndef?__SHAKE_H__??

#define?__SHAKE_H__??

??

#include?"actions/CCActionInterval.h"??

??

/**?

?*?按指定頻度范圍內抖動[-strength_x,strength_x][-strength_y,?strength_y]?

?*/??

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:??

??????

????virtual?void?startWithTarget(cocos2d::CCNode?*pTarget);??

????virtual?void?update(float?time);??

????virtual?void?stop(void);??

??????

??????

????//?Initial?position?of?the?shaked?node??

????float?m_initial_x,?m_initial_y;??

????//?Strength?of?the?action??

????float?m_strength_x,?m_strength_y;??

};??

??

??

/**?

?*?線性抖動(剩余時間越短，抖動范圍越小)?

?*/??

class?CCFallOffShake?:?public?CCShake??

{??

public:??

????CCFallOffShake();??

??????

????//?Create?the?action?with?a?time?and?a?strength?(same?in?x?and?y)??

????static?CCFallOffShake*?create(float?d,?float?strength?);??

????//?Create?the?action?with?a?time?and?strengths?(different?in?x?and?y)??

????static?CCFallOffShake*?createWithStrength(float?d,?float?strength_x,?float?strength_y?);??

??????

protected:??

????virtual?void?update(float?time);??

};??

??

#endif?//__SHAKE_H__??

CPP

[cpp]?view plain?copy

#include?"ShakeAction.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),?m_initial_x(0),?m_initial_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?=?CCRANDOM_0_1();??

????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(ccp(m_initial_x,?m_initial_y),ccp(?randx,?randy)));??

}??

??

void?CCShake::startWithTarget(CCNode?*pTarget)??

{??

????CCActionInterval::startWithTarget(?pTarget?);??

??????

????//?save?the?initial?position??

????m_initial_x?=?pTarget->getPosition().x;??

????m_initial_y?=?pTarget->getPosition().y;??

}??

??

void?CCShake::stop(void)??

{??

????//?Action?is?done,?reset?clip?position??

????this->getTarget()->setPosition(?ccp(?m_initial_x,?m_initial_y?)?);??

??????

????CCActionInterval::stop();??

}??

??

///??

??

??

CCFallOffShake::CCFallOffShake()??

{??

??????

}??

??

//?Create?the?action?with?a?time?and?a?strength?(same?in?x?and?y)??

CCFallOffShake*?CCFallOffShake::create(float?d,?float?strength?)??

{??

????return?createWithStrength(?d,?strength,?strength?);??

}??

??

//?Create?the?action?with?a?time?and?strengths?(different?in?x?and?y)??

CCFallOffShake*?CCFallOffShake::createWithStrength(float?duration,?float?strength_x,?float?strength_y)??

{??

????CCFallOffShake?*pRet?=?new?CCFallOffShake();??

??????

????if?(pRet?&&?pRet->initWithDuration(duration,?strength_x,?strength_y))??

????{??

????????pRet->autorelease();??

????}??

????else??

????{??

????????CC_SAFE_DELETE(pRet);??

????}??

??????

????return?pRet;??

}??

??

void?CCFallOffShake::update(float?dt)??

{??

????float?rate?=?(getDuration()?-?getElapsed())/getDuration();??

????if?(rate?<?0.f)?{??

????????rate?=?0.f;??

????}??

??????

????float?randx?=?fgRangeRand(?-m_strength_x,?m_strength_x?)*rate;??

????float?randy?=?fgRangeRand(?-m_strength_y,?m_strength_y?)*rate;??

??????

????//?move?the?target?to?a?shaked?position??

????m_pTarget->setPosition(?ccpAdd(ccp(m_initial_x,?m_initial_y),ccp(?randx,?randy)));??

}??

用法:


pSprite->runAction(CCShake::create(0.1f,10));
?pSprite:想抖動的物體


第一個參數是:抖動的時間

第一個參數是:抖動的幅度


注意

一個CCNode同時執行多個CCShake動作,或者一個CCShake沒有完又執行一個CCShake的話就會出現問題,會出現偏移的現象!

解決方案:

1).不要同時執行多個CCShake動作.

2.自己外部記錄這個CCNode的位置,執行完成后手動setPosition();

轉載于:https://www.cnblogs.com/Anzhongliu/p/6091822.html

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