cocos2d-x之多个移动的小球

MoveBalls.hpp:

#ifndef MoveBalls_hpp

#define MoveBalls_hpp

#include <stdio.h>

#include "cocos2d.h"

#include "Ball.hpp"

USING_NS_CC;

class MoveBalls:public LayerColor{

public:

virtual bool init();

CREATE_FUNC(MoveBalls);

virtual void update(float dt);

static Scene * createScene();

private:

//    Ball* ball;

cocos2d::Vector<Ball*> balls;

void addBall(float x,float y);

};

#endif /* MoveBalls_hpp */

MoveBalls.cpp:

#include "MoveBalls.hpp"

Scene * MoveBalls::createScene(){

auto s=Scene::create();

auto l=MoveBalls::create();

s->addChild(l);

return s;

}

bool MoveBalls::init(){

LayerColor::initWithColor(Color4B(255,255,255,255));

addBall(100,100);

addBall(100,200);

addBall(100,300);

addBall(100,400);

scheduleUpdate();

return true;

}

void MoveBalls::update(float dt){

//    ball->move();

for (auto it=balls.begin();it!=balls.end();it++) {

(*it)->move();

}

}

void MoveBalls::addBall(float x,float y){

auto ball=Ball::create();

ball->setPosition(x,y);

addChild(ball);

balls.pushBack(ball);

}

Ball.hpp:

#ifndef Ball_hpp

#define Ball_hpp

#include <stdio.h>

#include "cocos2d.h"

USING_NS_CC;

class Ball:public Sprite{

public:

virtual bool init();

void move();

CREATE_FUNC(Ball);

private:

float speedX;

Size visibleSize;

};

#endif /* Ball_hpp */

Ball.cpp:

#include "Ball.hpp"

bool Ball::init(){

Sprite::initWithFile("GOODS_3201_64.png");

visibleSize=Director::getInstance()->getVisibleSize();

speedX=3;

return true;

}

void Ball::move(){

setPositionX(getPositionX()+speedX);

if (getPositionX()>visibleSize.width) {

setPositionX(0);

}

}