cocos2dx 如何制作一个使用世界坐标系的精灵

#pragma once

#include "cocos2d.h"
using namespace cocos2d;

class TStopSprite : public Sprite
{
public:
	TStopSprite();
	virtual ~TStopSprite();
	CREATE_FUNC(TStopSprite);
	virtual bool init();
	virtual void update(float fDelay);
	virtual void setPosition(const Vec2& pos);

private:
	Point m_worldPoint;	// 修正坐标
};

#include "TStopSprite.h"

using namespace cocos2d;

TStopSprite::TStopSprite()
{
	m_worldPoint = Point(0,0);
}

TStopSprite::~TStopSprite()
{

}

bool TStopSprite::init()
{
	if (!Sprite::init())
	{
		return false;
	}


	this->scheduleUpdate();

	return true;
}

void TStopSprite::update(float fDelay)
{
	if (nullptr == this->getParent())
	{
		return;
	}

	// 获取baba
	auto parent = this->getParent();
	auto parentPos = parent->convertToWorldSpace(Point(0,0));
	Sprite::setPosition(m_worldPoint - parentPos);
}

void TStopSprite::setPosition(const Vec2& pos)
{
	m_worldPoint = pos;
}