几种抽奖方式之轮盘抽奖

来源：互联网发布：软件系统结构图阶段编辑：程序博客网时间：2024/04/28 11:25
最近做项目使用到了抽奖功能，于是把抽奖模块独立出来了，以便重复利用，资源来自http://www.cnblogs.com/zisou/p/cocos2d-xZhuanpan.html。下面直接上代码：
#ifndef __Wheel__CWheelLayer__#define __Wheel__CWheelLayer__#include <stdio.h>#include "cocos2d.h"#include "../cocos2d/cocos/editor-support/cocostudio/CocoStudio.h"#include "../cocos2d/cocos/ui/CocosGUI.h"using namespace cocostudio;using namespace ui;USING_NS_CC;class CWheelLayer:public Layer{public:    CWheelLayer();    ~CWheelLayer();    bool init();    CREATE_FUNC(CWheelLayer);    static Scene* createScene();    void update(float dt);private:    Sprite *_wheel;    //转盘状态0静止，1加速，2减速    int _state;    float _speed;    float _speedAcc;    //目标 设置index即为结果    int _index;    float _targetRo;    //控制音效    int _soundCount1;    int _soundCount2;};#endif /* defined(__Wheel__CWheelLayer__) */////  CWheelLayer.cpp//  Wheel////  Created by xujw on 15/6/29.////#include "CWheelLayer.h"#include "CSoundTools.h"CWheelLayer::CWheelLayer():_wheel(nullptr)                            ,_state(0)                            ,_speed(0)                            ,_speedAcc(0.05)                            ,_targetRo(0)                            ,_index(0)                            ,_soundCount1(0)                            ,_soundCount2(0){}CWheelLayer::~CWheelLayer(){}bool CWheelLayer::init(){    if (!Layer::init())    {        return false;    }    auto node = CSLoader::createNode("wheel.csb");    this->addChild(node);    auto close = dynamic_cast<Button*>(node->getChildByName("btn_close"));    close->addTouchEventListener([this,close](Ref* tar,Widget::TouchEventType type)                                 {                                     if (type == Widget::TouchEventType::ENDED)                                     {                                         CCLOG("close...");                                         Director::getInstance()->popScene();                                     }                                 });    _wheel = dynamic_cast<Sprite*>(node->getChildByName("sprite_wheel"));    _wheel->setRotation(12);    auto spin = dynamic_cast<Button*>(node->getChildByName("btn_spin"));    spin->addTouchEventListener([this](Ref* tar,Widget::TouchEventType type)                                 {                                     if (type == Widget::TouchEventType::ENDED)                                     {                                         if (_state==0)                                         {                                             CCLOG("spin...");                                             _state = 1;                                             _index = arc4random()%18;                                             _targetRo = _index*20 + 12 + 360*2;                                             _speed = 0;                                             _soundCount1 = 0;                                             _soundCount2 = 0;                                         }                                     }                                 });    scheduleUpdate();    return true;}Scene* CWheelLayer::createScene(){    auto s = Scene::create();    s->addChild(CWheelLayer::create());    return s;}void CWheelLayer::update(float dt){    if (_state == 1)    {        auto ro = _wheel->getRotation();        ro += _speed;        if (ro>=360*3)        {            ro = 0;            _state = 2;            _soundCount1 = 0;        }        _wheel -> setRotation(ro);        if (_speed<=8)        {            _speed += _speedAcc;        }        if ((int)ro/18 > _soundCount1)        {            if (_soundCount2>5)            {                _soundCount2 = 0;                _soundCount1 = (int)ro/18;                CSoundTools::playEffect(TURN_TABLE);            }        }        _soundCount2++;    }    else if (_state == 2)    {        auto ro = _wheel->getRotation();        auto spp = (_targetRo - ro)*0.02;        auto finRo = _targetRo - ro;        if (spp>=_speed)        {            spp = _speed;        }        ro += spp;        _wheel->setRotation(ro);        if (spp<=0.02)        {            spp = finRo;            _wheel->setRotation(_targetRo-360*2);            _state = 0;            CSoundTools::playEffect(TURN_TABLE);            MessageBox(StringUtils::format("Now index:%d",_index).c_str(), "Congratulation");        }        if ((int)ro/18 > _soundCount1)        {            if (_soundCount2>5)            {                _soundCount2 = 0;                _soundCount1 = (int)ro/18;                CSoundTools::playEffect(TURN_TABLE);            }        }        _soundCount2++;    }}
下载链接：https://github.com/sky068/WheelAndCoster
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