簡單手勢識別

模擬ios原生手勢，簡單實現點選(雙擊)、長按、滑動、拖動等功能。

**如下：

//

// cgesture.h
// actionlabel
//// created by xujw on 16/3/15.
/* 手勢識別 仿iphone 簡單長按 點選(雙擊等) 滑動 拖動等。
* 使用方法：
* auto gesture = cgesture::createtapgesture(target,callback,taps);
* this->addchild(gestrue)
*/#ifndef cgesture_h
#define cgesture_h
#include 
#include "cocos2d.h"
using_ns_cc;
typedef
enum gesturedirection
gesturedirection;
typedef
std::function gesturecallback;
typedef
std::function swipegesturecallback;
#define shake_length 100
class cgesture:public layer
;#endif /* cgesture_h */
//// cgesture.cpp
// actionlabel
//// created by xujw on 16/3/15.
////
#include "cgesture.h"
#include 
cgesture::cgesture()
:_iscantouch(false)
,_tapnum(0)
{}cgesture::~cgesture()
{}bool cgesture::init()
return
true;
}cgesture* cgesture::createtapgesture(node*target,gesturecallback callback,int tapsrequired)
if (box.containspoint(pos))
return
true;
};lis->ontouchmoved = [=](touch *touch,event *event)
};lis->ontouchended = [=](touch *touch,event *event)
if (box.containspoint(pos))
}gesture->scheduleonce([=](float dt)
, 0.5, "gesturetapnumreset");
};gesture->geteventdispatcher()->addeventlistenerwithscenegraphpriority(lis, target);
return gesture;
}cgesture* cgesture::createlongpressgesture(node*target,gesturecallback callback,float delay)
if (box.containspoint(pos))
, delay, "gesturechangetouchstate");
return
true;
}else
};lis->ontouchmoved = [=](touch *touch,event *event)
};lis->ontouchended = [=](touch *touch,event *event)
if (gesture->_iscantouch)
}else
gesture->_iscantouch = false;
};gesture->geteventdispatcher()->addeventlistenerwithscenegraphpriority(lis, target);
return gesture;
}cgesture* cgesture::createswipegesture(node*target,swipegesturecallback callback)
if (box.containspoint(pos))
else
return gesture->_iscantouch;
};lis->ontouchmoved = [=](touch *touch,event *event){};
lis->ontouchended = [=](touch *touch,event *event)
//起始點都在target範圍內才響應
if (!gesture->_iscantouch || !box.containspoint(pos))
auto startpos = touch->getstartlocation();
auto curpos = touch->getlocation();
auto subpos = curpos - startpos;
if (fabs(subpos.x) > fabs(subpos.y))
else
if (subpos.x < -shake_length)
}else
else
if (subpos.y < -shake_length)}};
gesture->geteventdispatcher()->addeventlistenerwithscenegraphpriority(lis, gesture);
return gesture;
}cgesture* cgesture::createpangestrue(node*target,gesturecallback callback)
if (box.containspoint(pos))
return
true;
};lis->ontouchmoved = [=](touch *touch,event *event)
};lis->ontouchended = [=](touch *touch,event *event)
;gesture->geteventdispatcher()->addeventlistenerwithscenegraphpriority(lis, target);
return gesture;
}

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