5.cocos2dx中关于draw绘图，声音和音效，预加载，播放与停止Vs暂停和恢复，音量控制

头文件

T19Draw.h

#ifndef __T19Draw_H__

#define __T19Draw_H__

#include "cocos2d.h"

#include "TBACk.h"

USING_NS_CC;

class T19Draw:public TBACk

{

public:

static CCScene * scene();

CREATE_FUNC(T19Draw);

bool init();

void draw();

};

#endif

T19Draw.cpp

#include "T19Draw.h"

#include "AppMacros.h"

CCScene *T19Draw::scene()

{

scene = CCScene::create();

T19Draw * layer = create();

scene->addChild(layer);

return scene;

}

bool init()

{

TBACk::init();

return true;

}

void draw()

{

//设置点的尺寸大小

ccPointSize(10);

//设置颜色

ccDrawColor4B(255,0);

//做一个点，ccp(100,100)中的值是点的坐标位置

ccDrawPoint(ccp(100,100));

//定义一个点的集合

CCPoint p[] = {BACkground:white; color:rgb(111,200),ccp(200,100)};

//开始画点，第二个参数表示点的个数

ccDrawPoints(p,3);

//画一条线段

ccDrawColor4B(0,255,0);

glLineWidth(5);

ccDrawLine(BACkground:white; color:rgb(111,100));

//画一个矩形,由对角线的两个点最终生成两个矩形

ccDrawRect(@H_618_725@ccp(400,300));

BACkground:white; color:rgb(136,0);

CCPoint poly[] = { ccp(150,150),138); font-family:新宋体; font-size:9.5pt">ccp(300,10) };

//以上面的三个点画出一个矩形，最后一个false来控制形状是否合并

//第二个参数表示的是点的个数

ccDrawPoly(poly,3,true);

//这里表示话一个圆

ccDrawCircle(ccp(240,160),60,3.14,100,true);

}

运行结果：

#include "SimpleAudioENGIne.h"

using namespace CocosDenshion;

平台

支持的常见文件格式

备注

Android

@H_501_64@mp3,mid,oggg,wav

可以播放android,media,MediaPlayer所支持的所有格式

ios

acc,caf,mp3,0); padding:0cm 5.4pt; width:223.65pt; BACkground-color:transparent">

可以播放AVAudioPlayer所支持的所有格式

Windows

@H_501_64@mid,0); padding:0cm 5.4pt; width:223.65pt; BACkground-color:transparent">

无

平台

支持的常见文件格式

Android

aggg,0); padding:0cm 5.4pt; width:223.65pt; BACkground-color:transparent">

对wav的支持不完美

Ios

caf,m4a

可以播放Cocos2d-iphone,CocosDesion所支持的所有格式

windows

无

SimpleAudioENGIne::sharedENGIne()->preloadBACkgroundMusic("audio/start.wav");

SimpleAudioENGIne::sharedENGIne()->preloadEffect(“audio/onclick.wav”);

SimpleAudioENGIne::sharedENGIne()->playBACkgroundMusic(“audio/start.wav”);

bool T19Music::ccTouchBegan(CCTouch *pTouch,CCEvent *pEvent) {

SimpleAudioENGIne::sharedENGIne()->playEffect("audio/onclick.wav");

static bool flag = true;

if (flag) {

SimpleAudioENGIne::sharedENGIne()->pauseBACkgroundMusic();

//SimpleAudioENGIne::sharedENGIne()->stopBACkgroundMusic();

} else {

SimpleAudioENGIne::sharedENGIne()->resumeBACkgroundMusic();

//SimpleAudioENGIne::sharedENGIne()->playBACkgroundMusic("audio/start.wav");

}

flag = !flag;

return true;

}

//设置音量大小

SimpleAudioENGIne::sharedENGIne()->setBACkgroundMusicVolume(0.1f);

//获得音量的大小

SimpleAudioENGIne::sharedENGIne()->getBACkgroundMusicVolume();

void AppDelegate::applicationDidEnterBACkground() {

CCDirector::sharedDirector()->stopAnimation();

// if you use SimpleAudioENGIne,it must be pause

// SimpleAudioENGIne::sharedENGIne()->pauseBACkgroundMusic();

}

// this function will be called when the app is active again

void AppDelegate::applicationWillEnterForeground() {

CCDirector::sharedDirector()->startAnimation();

// if you use SimpleAudioENGIne,it must resume here

// SimpleAudioENGIne::sharedENGIne()->resumeBACkgroundMusic();

}

T20Music.h

#ifndef __T20Music_H__

#define __T20Music_H__

#include "TBACk.h"

USING_NS_CC;

class T20Music :public T20Music);

bool init();

virtual bool ccTouchBegan(CCTouch *pTouch,CCEvent *pEvent);

};

#endif

T20Music.cpp

#include "T20Music.h"

#include "AppMacros.h"

#include "SimpleAudioENGIne.h"

using namespace CocosDenshion;

T20Music::CCScene *T20Music * layer = init();

//预加载音乐

SimpleAudioENGIne::sharedENGIne()->preloadBACkgroundMusic("audio/start.wav");

preloadEffect("audio/onclick.wav");

playBACkgroundMusic("audio/start.wav");

//设置触摸可以行

setTouchEnabled(true);

setTouchMode(kCCTouchesOneByOne);

return true;

}

//通过鼠标事件控制声音的显示和消失

bool CCEvent *pEvent)

{

static bool flag = true;

playEffect("audio/onclick.wav");

if (flag)

{

//SimpleAudioENGIne::sharedENGIne()->playBACkgroundMusic("audio/start.wav");

//暂停播放音乐

pauseBACkgroundMusic();

}

else

{

//SimpleAudioENGIne::sharedENGIne()->stopBACkgroundMusic("audio/start.wav");

//重新恢复播放音乐

resumeBACkgroundMusic();

}

flag = !flag;

//控制音量

setBACkgroundMusicVolume(0.1f);

stopAllEffects();

unloadEffect("audio/start.wav");

return false;

}

运行效果是：当进入这个scene之后就会听见音乐，当鼠标点击的时候声音停止了。