【Cocos2d-x】开发基础-第一个Cocos2d-x游戏

cocos new -p com.uifuture -l cpp -d E://chxCocosWork HelloWord

cocos new HelloWord -p
com.uifuture -l cpp -d E://chxCocosWork

#ifndef __HELLOWORLD_SCENE_H__
#define __HELLOWORLD_SCENE_H__

#include "cocos2d.h"

class HelloWorld : public cocos2d::Layer
{
public:
    static cocos2d::Scene* createScene();

    virtual bool init();

    // a selector callback
    void menuCloseCallback(cocos2d::Ref* pSender);

    // implement the "static create()" method manually
    CREATE_FUNC(HelloWorld);
};

#endif // __HELLOWORLD_SCENE_H__

#ifndef  _APP_DELEGATE_H_
#define  _APP_DELEGATE_H_

#include "cocos2d.h"

/**
@brief    The cocos2d Application.

Private inheritance here hides part of interface from Director.
*/
class  AppDelegate : private cocos2d::Application
{
public:
    AppDelegate();
    virtual ~AppDelegate();

    virtual void initGLContextAttrs();

    /**
    @brief    Implement Director and Scene init code here.
    @return true    Initialize success, app continue.
    @return false   Initialize failed, app terminate.
    */
    virtual bool applicationDidFinishLaunching();

    /**
    @brief  Called when the application moves to the background
    @param  the pointer of the application
    */
    virtual void applicationDidEnterBackground();

    /**
    @brief  Called when the application reenters the foreground
    @param  the pointer of the application
    */
    virtual void applicationWillEnterForeground();
};

#endif // _APP_DELEGATE_H_

#include "HelloWorldScene.h"
#include "SimpleAudioEngine.h"

USING_NS_CC;

Scene* HelloWorld::createScene()
{
    // 创建场景对象
    auto scene = Scene::create();

    // 创建层对象
    auto layer = HelloWorld::create();

    // 把层放到场景里
    scene->addChild(layer);

    // 返回这个场景
    return scene;
}

// on "init" you need to initialize your instance
// 初始化当前这个层
bool HelloWorld::init()
{
    //////////////////////////////
    // 1. super init first
    if ( !Layer::init() )
    {
        return false;
    }

    auto visibleSize = Director::getInstance()->getVisibleSize();//得到屏幕的大小(可见区域大小)
    Vec2 origin = Director::getInstance()->getVisibleOrigin();//得到可见区域大小的左下角坐标

    /////////////////////////////
    // 2. add a menu item with "X" image, which is clicked to quit the program
    //    you may modify it.

    // add a "close" icon to exit the progress. it's an autorelease object
  // 得到图片菜单 以及设置回调函数
    auto closeItem = MenuItemImage::create(
                                           "CloseNormal.png",
                                           "CloseSelected.png",
                                           CC_CALLBACK_1(HelloWorld::menuCloseCallback, this));
    //关闭的按钮 
    closeItem->setPosition(Vec2(origin.x + visibleSize.width - closeItem->getContentSize().width/2 ,
                                origin.y + closeItem->getContentSize().height/2));

    // create menu, it's an autorelease object
  //把菜单项放到菜单里
    auto menu = Menu::create(closeItem, NULL);
  //指定菜单的位置 设置显示的坐标位置
    menu->setPosition(Vec2::ZERO);
    this->addChild(menu, 1);//把菜单放到当前层

    /////////////////////////////
    // 3. add your codes below...

    //标签 也就是中间显示的那个文字  以及加载字体
    auto label = Label::createWithTTF("Hello World", "fonts/Marker Felt.ttf", 24);

  //指定标签的位置
    label->setPosition(Vec2(origin.x + visibleSize.width/2,
                            origin.y + visibleSize.height - label->getContentSize().height));

  //把标签加入到层中
    this->addChild(label, 1);

  //指定一个图片的精灵
    auto sprite = Sprite::create("HelloWorld.png");

    // 设置图片精灵的位置
    sprite->setPosition(Vec2(visibleSize.width/2 + origin.x, visibleSize.height/2 + origin.y));

  //把图片精灵加入到层中
    this->addChild(sprite, 0);

    return true;
}

//点击close菜单项来回调的
void HelloWorld::menuCloseCallback(Ref* pSender)
{
    //Close the cocos2d-x game scene and quit the application
    Director::getInstance()->end();

  //条件编译 ，也就是满足条件就编译过去，如果不满足，就相当于注释了
#if (CC_TARGET_PLATFORM == CC_PLATFORM_IOS) 
    exit(0);
#endif

    /*To navigate back to native iOS screen(if present) without quitting the application  ,do not use Director::getInstance()->end() and exit(0) as given above,instead trigger a custom event created in RootViewController.mm as below*/

    //EventCustom customEndEvent("game_scene_close_event");
    //_eventDispatcher->dispatchEvent(&customEndEvent);
}