头文件：MyLayer.h

#include "cocos2d.h"

USING_NS_CC;   //代表的是： using namespace cocos2d   （通过F12进行查看）

//继承CCLayer

class MyLayer :public CCLayer

{

public:

//没有构造函数和析构函数

CREATE_FUNC(MyLayer);

/*static MyLayer *create();*/

static CCScene * scene();

bool init();

};

MyLayer.cpp

#include "MyLayer.h"

//MyLayer *MyLayer::create(){

//  MyLayer * pRet = new MyLayer();

//  if (pRet && pRet->init())

//  {

//      pRet->autorelease();

//  }

//  else

//  {

//      delete pRet;

//      pRet = NULL;

//  }

//  return pRet;

//}

bool MyLayer::init()

{

if (!CCLayer::init())

{

return false;

}

CCSize winSize = CCDirector::sharedDirector()->getWinSize();

//创建一个精灵

CCSprite * spr = CCSprite::create("anchor3.png");

spr->setPosition(ccp(winSize.width/2,winSize.height /2));

//添加一个精灵

addChild(spr);

return true;

}

CCScene *MyLayer::scene()

{

CCScene * scene = CCScene::create();

MyLayer * layer = MyLayer::create();

scene->addChild(layer);

return scene;

}

要想让写的Layer能够运行，需要在AppDelegate.app中添加如下代码

1、 添加头文件:#include "MyLayer.h"

2、 在bool AppDelegate::applicationDidFinishLaunching() 中修改如下内容：

bool AppDelegate::applicationDidFinishLaunching() {

// initialize director

CCDirector* pDirector = CCDirector::sharedDirector();

CCEGLView* pEGLView = CCEGLView::sharedOpenGLView();

pDirector->setOpenGLView(pEGLView);

// turn on display FPS

pDirector->setDisplayStats(true);

// set FPS. the default value is 1.0/60 if you don't call this

pDirector->setAnimationInterval(1.0 / 60);

// create a scene. it's an autorelease object

//CCScene *pScene = HelloWorld::scene();

CCScene * pScene = MyLayer::scene();

// run

pDirector->runWithScene(pScene);

return true;

}

运行结果：

LayerAnchorPoint.h

#ifndef __T01LayerAnchorPoint_H__

#define __T01LayerAnchorPoint_H__

#include "cocos2d.h"

USING_NS_CC;

class LayerAnchorPoint:public CCLayer

{

public:

static LayerAnchorPoint * create();

bool init();

static CCScene * scene();

void draw();

void mySchedule(float dt);

CCSprite *spr;

};

#endif

LayerAnchorPoint.cpp

#include "LayerAnchorPoint.h"

CCScene * LayerAnchorPoint::scene()

{

//创建一个场景

CCScene * scene = CCScene::create();

LayerAnchorPoint * layer = LayerAnchorPoint::create();

scene->addChild(layer);

return scene;

}

LayerAnchorPoint * LayerAnchorPoint::create() {

LayerAnchorPoint *pRet = new LayerAnchorPoint();

if (pRet && pRet->init())

{

pRet->autorelease();

}

else

{

delete pRet;

pRet = NULL;

}

return pRet;

}

bool LayerAnchorPoint::init()

{

CCLayer::init();

CCSize winSize = CCDirector::sharedDirector()->getWinSize();

spr = CCSprite::create("anchor1.png");

//设置锚点

//spr->setAnchorPoint(ccp(0.656,0.5));

spr->setScale(5.0f);

spr->setPosition(ccp(winSize.width/2,winSize.height/2));

addChild(spr);

//设置一个定时器,频率是2秒

schedule(schedule_selector(LayerAnchorPoint::mySchedule), 2);

return true;

}

//通过下面的方法实现画线

void LayerAnchorPoint::draw()

{

CCSize winSize = CCDirector::sharedDirector()->getWinSize();

//RGB颜色，其中最后一个参数是透明率

ccDrawColor4B(255,0,0,255);

ccDrawLine(ccp(0, winSize.height / 2), ccp(winSize.width, winSize.height / 2));

ccDrawLine(ccp(winSize.width / 2, 0),ccp(winSize.width/2,winSize.height));

}

//通过下面的方式设置旋转

void LayerAnchorPoint::mySchedule(float dt) {

static float ro = 0;

ro += 30;

spr->setRotation(ro);

}

修改：AppDelegate.cpp中的代码

头文件：

#include "LayerAnchorPoint.h"

bool AppDelegate::applicationDidFinishLaunching() {

// initialize director

CCDirector* pDirector = CCDirector::sharedDirector();

CCEGLView* pEGLView = CCEGLView::sharedOpenGLView();

pDirector->setOpenGLView(pEGLView);

// turn on display FPS

pDirector->setDisplayStats(true);

// set FPS. the default value is 1.0/60 if you don't call this

pDirector->setAnimationInterval(1.0 / 60);

// create a scene. it's an autorelease object

//CCScene *pScene = HelloWorld::scene();

//CCScene * pScene = MyLayer::scene();

CCScene * pScene = LayerAnchorPoint::scene();

// run

pDirector->runWithScene(pScene);

return true;

}

运行结果：

1、编写：LayerSprite.h

#include "cocos2d.h"

USING_NS_CC;

class LayerSprite:public CCLayer

{

public:

static CCScene * scene();

CREATE_FUNC(LayerSprite);

bool init();

};

编写：表示屏幕大小的头文件AppMacros.h

#ifndef __APPMACROS_H__

#define __APPMACROS_H__

#include "cocos2d.h"

//通过预定义获得屏幕大小

#define  winSize  CCDirector::sharedDirector()->getWinSize()

#endif /* __APPMACROS_H__ */

编写：LayerSprite.cpp

#include "LayerSprite.h"

#include "AppMacros.h"

CCScene *LayerSprite::scene()

{

CCScene * scene = CCScene::create();

LayerSprite * layer = LayerSprite::create();

scene->addChild(layer);

return scene;

}

bool T02LayerSprite::init()

{

CCLayer::init();

CCSprite * bg = CCSprite::create("sprite/background.jpg",CCRectMake(0,0,480,320));

bg->setAnchorPoint(ccp(0,0));

bg->setPosition(CCPointZero);

addChild(bg);

CCImage * image = new CCImage();

image->initWithImageFile("sprite/plant.png");

CCTexture2D * texture = new CCTexture2D();

texture->autorelease();

texture->initWithImage(image);

CCSprite * plant = CCSprite::createWithTexture(texture); //纹理

plant->setPosition(ccp(100,winSize.height/2));

addChild(plant);

CCTexture2D * texture2 = CCTextureCache::sharedTextureCache()->addImage("sprite/bullet.png");

CCSprite * bullet = CCSprite::createWithTexture(texture2);

bullet->setPosition(ccp(200, winSize.height / 2+10));

addChild(bullet);

CCSpriteFrameCache::sharedSpriteFrameCache()->addSpriteFramesWithFile("sprite/zombie.plist");

//CCSpriteFrame *sf = CCSpriteFrameCache::sharedSpriteFrameCache()->spriteFrameByName("z_1_attack_01.png");

//CCSprite *zombie = CCSprite::createWithSpriteFrame(sf);

CCSprite *zombie = CCSprite::createWithSpriteFrameName("z_1_attack_01.png");

zombie->setPosition(ccp(400, winSize.height / 2-50));

addChild(zombie);

CCJumpBy * by = CCJumpBy::create(2, ccp(0,0),40,3);

zombie->runAction(CCRepeatForever::create(by));

CCSpriteFrame * frame = CCSpriteFrame::create("sprite/p_1_01.png", CCRectMake(0, 0, 80, 80));

CCSprite * sun = CCSprite::createWithSpriteFrame(frame);

sun->setPosition(ccp(400, winSize.height / 2 + 50));

addChild(sun);

return true;

}

同上，将LayerSprite.h加到AppDelegate.cpp中，并添加上：

CCScene * pScene = LayerSprite::scene();

运行结果：

LayerZorder.h

#include "cocos2d.h"

USING_NS_CC;

class LayerZorder:public CCLayer

{

public:

static CCScene * scene();

CREATE_FUNC(LayerZorder);

bool init();

};

LayerZorder.cpp

#include "LayerZorder.h"

#include "AppMacros.h"

CCScene *LayerZorder::scene()

{

CCScene * scene = CCScene::create();

LayerZorder * layer = LayerZorder::create();

scene->addChild(layer);

return scene;

}

bool LayerZorder::init()

{

CCLayer::init();

CCSprite * man = CCSprite::create("zorder/car42.png");

//将图片缩放

man->setScale(0.3f);

CCSprite * woman = CCSprite::create("zorder/car43.png");

woman->setScale(0.3f);

CCSprite * smallThree = CCSprite::create("zorder/car51.png");

smallThree->setScale(0.3f);

man->setPosition(ccp(winSize.width / 2 + 40, winSize.height / 2 - 30));

smallThree->setPosition(ccp(winSize.width / 2, winSize.height / 2 + 30));

woman->setPosition(ccp(winSize.width / 2 - 40, winSize.height / 2 + 30));

addChild(man);

addChild(smallThree);

addChild(woman);

//通过setZOrder来设置图片显示顺序

man->setZOrder(100);

smallThree->setZOrder(50);

woman->setZOrder(0);

return true;

/*CCLog("%d", man->getZOrder());

CCLog("%d", smallThree->getZOrder());

CCLog("%d", woman->getZOrder());*/

return true;

}

修改AppDelegate.cpp

1.  将zorder的头文件进入：#include "LayerZorder.h"

2.  CCScene * pScene = LayerZorder::scene();

运行结果：