How to Create the Custom create function in cocos2d-x - ios

Question

I want to change Create function
for avoiding the Global variable usage.
I want to pass my values (e.g scores) while Calling
and creating other scenes. One method i found is
the use of Global variable in create Function
but i want to use those values without using global
variables. Please reply me fast , i'm new in cocos2d-x.
and also tell me if there is any other method.

Answer 1

i personally use these two approaches ... so choose which fits you the most!
take for example this ScoreScene class and how its created.
1)- approach one
class ScoreScene : public cocos2d::Layer
{
public:
static cocos2d::Scene* createScene(bool won, int score) {
auto scene = Scene::create();
auto layer = ScoreScene::create(won, score);
scene->addChild(layer);
return scene;
}
static ScoreScene* create(bool won, int score) {
ScoreScene *layer = new(std::nothrow) ScoreScene;
if (layer)
{
layer->isWinner = won;
layer->m_score = score;
if (layer->init())
{
layer->autorelease();
return layer;
}
}
CC_SAFE_DELETE(layer);
return nullptr;
}
bool init() override {
if(!layer->init()) return;
// initialization code here
return true;
}
private:
// your properties
int m_score;
bool isWinner;
};
1)- approach two (personally preferred)
make just one method which is createScene instead of two.
class ScoreScene : public cocos2d::Layer
{
public:
cocos2d::Scene* ScoreScene::createScene(bool won, int score)
{
ScoreScene *layer = new(std::nothrow) ScoreScene;
if (layer)
{
layer->isWinner = won;
layer->m_score = score;
if (layer->init())
{
auto scene = Scene::create();
layer->autorelease();
scene->addChild(layer);
return scene;
}
}
CC_SAFE_DELETE(layer);
return nullptr;
}
bool init() override {
if(!layer->init()) return;
// initialization code here
return true;
}
private:
// your properties
int m_score;
bool isWinner;
};

Answer 2

I used the same Approach But thanks for answering..
cocos2d::Scene* GameOverScene::createScene(unsigned int tempscoree)
{
GameOverScene *pRet = new(std::nothrow) GameOverScene();
if (pRet && pRet->init(tempscoree))
{
auto scene = Scene::create();
pRet->autorelease();
scene->addChild(pRet);
return scene;
}
else
{
delete pRet;
pRet = NULL;
return NULL;
}
}
bool GameOverScene::init(unsigned int tempScore)
{
if ( !Layer::init() )
{
return false;
}
//Now i can use tempScore any where in to this init() method.
}