【cocos2dx 3.3】口袋空战1 背景层

来源：互联网发布：造梦西游刷点卷软件编辑：程序博客网时间：2024/04/28 07:03

分析：

背景不断地向左滚动
可以用2个背景图片，交替向左移动实现

背景素材：

代码：

BackGround.h

#include "cocos2d.h"USING_NS_CC;class BackGround : public Layer{public:virtual bool init();CREATE_FUNC(BackGround);//定义2个背景，实现滚动效果Sprite *land1;Sprite *land2;void landMove(float dt);  };

BackGround.cpp

#include "BackGround.h"USING_NS_CC;bool BackGround::init(){Vec2 origin = Director::getInstance()->getVisibleOrigin();  Size visibleSize = Director::getInstance()->getVisibleSize(); //定义2个背景land1 = Sprite::create("bg.png");land1->setPosition(Point(origin.x+land1->getContentSize().width/2,origin.y+land1->getContentSize().height/2));  land1->getTexture()->setAliasTexParameters();  addChild(land1);land2 = Sprite::create("bg.png");land2->setPosition(Point(origin.x+land1->getPositionX()+land1->getContentSize().width-2,land1->getPositionY()));      land2->getTexture()->setAliasTexParameters(); addChild(land2);//开启计时器，不断交替左移schedule(schedule_selector(BackGround::landMove), 1/60);return true;}void BackGround::landMove(float dt){land1->setPositionX(land1->getPositionX()-2);      land2->setPositionX(land1->getPositionX()+land1->getContentSize().width-2);      if (land2->getPositionX()==land2->getContentSize().width/2)      {          land1->setPositionX(land2->getContentSize().width/2);      }  }

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