How to transfer SceneA->SceneB->SceneA ? Impossible?

GaddMaster · February 24, 2018, 1:26am

I cannot do this due to circular dependencies ?

How do you people do this ?

Can you please give basic examples as it seems impossible from my viewpoint

This solution isn’t working for me

Thanks

slackmoehrle · February 24, 2018, 1:51pm

Of course it is possible. Without insulting you how much c++ do you know? Lately you are asking questions that are generic to c++ and not Cocos2d-x. If you have circular dependencies fix them!

Post your files so we can help. By post I mean attached so I can drop them into a new project to work with.

GaddMaster · February 24, 2018, 2:49pm

Hi Slack. Sorry for been a nuisance…

Problem is simple help me with.

All I need is as standard HelloWorld1Scene to swap to a HelloWorld2Scene and then back again. Simple

Very short example. Just to show how it would be done would be great. i tied many things. Tried solutions shared in last post#

Driving me mad

slackmoehrle · February 24, 2018, 7:49pm

Our programmers guide repo has this in many places.

github.com

chukong/programmers-guide-samples/blob/v3.10/cpp/src/MainScene.cpp

#include "MainScene.h"

#include "Chapter2.h"
#include "Chapter3.h"
#include "Chapter4.h"
#include "Chapter5.h"
#include "Chapter6.h"
#include "Chapter7.h"
#include "Chapter9.h"
#include "Chapter12.h"
#include "Chapter13.h"

USING_NS_CC;

Scene* MainScene::createScene()
{
    // 'scene' is an autorelease object
    auto scene = Scene::create();
    
    // 'layer' is an autorelease object

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GaddMaster · February 24, 2018, 9:36pm

YES . There we go . This is how it is done… Thanks very much Slack

GaddMaster · March 8, 2018, 9:17pm

Hi Slack

I went through this example. I looked at main scene class and checked chapter 2 and 3.

Main scene -> chapter 2 or 3

But no scene goes back to man scene

So there is no solution here

Still need example of SceneA->SceneB and then SceneB->SceneA

slackmoehrle · March 9, 2018, 12:58am

Just replace back replaceScene(scene) handles this. If it is crashing you probably have a scope issue. If you are really struggling I can make a simple example for you. cpp-tests also has examples of this I am sure.

GaddMaster · March 9, 2018, 12:00pm

Please slack make example.
Really mega simple example. On touch begin swaps to A, on touch begin swaps to B, on touch begin swaps to A… Etc…

Mega simple

Would love see it … I have looked through loads cpp test to try find it

kevinwu1024 · March 9, 2018, 1:38pm

SpeedCC can help you out.

github.com

kevinwu1024/SpeedCC-Doc/blob/master/scene-navigation.md

# Scene Navigation
---

SpeedCC provides **Scene Navigation** to keep track scene switch, and the code looks like below.

```c++
SCSceneNavigator::getInstance()->gotoScene<MySceneController>(SCSceneNavigator::kSceneReplace);
```

## 1. Scene Switch Type
There are 3 types of scene switch: 
* **Replace**
* **Push**
* **Modal**

**Replace** and **Push** type corresponding to `cocos2d::replaceScene()` and `cocos2d::pushScene()`, they has unique `cocos2d::Scene` instance, but **Modal** has no new `cocos2d::Scene` instance, it just a modal layer of current `cocos2d::Scene`, so it will return the same cocos2d::Scene instance as previous scene controller by `SCSceneController::getScene()`, but bed node is unique instance for each type of scene switch by `SCSceneController::getBedNode()`. 

## 2. Back to Previous Scene
In many games, has case likes **Scene A => Scene B => Scene A**. Using `SCSceneNavigator::back()` to handle this case very easy, it not only back to previous scene but also will apply **opposite transition effect** if has.

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