新手 求告诉下问题

Cocos2d-x
#1

void HelloWorld::update(float t)
{
auto sprite1 = Sprite::create(“222.jpg”, Rect(32x, 480, 32, 48));
addChild(sprite1, 0);
sprite1->setPosition(Vec2(200,200));
sprite1->setTag(1);
}
void HelloWorld::onKeyPressed(cocos2d::EventKeyboard::KeyCode keyCode, cocos2d::Event* event)
{
log(“Key with keycode %d pressed”, keyCode);
if (keyCode == EventKeyboard::KeyCode::KEY_S)
{
x++;
if(x>3)
{
x=0;
}
}
}

为什么第一张图片总在上面？