Cocos2d restart current scene - cocos2d-iphone

Question

I've got an end of level layer added to game, each level has its own scene. I want to be able to restart the current scene. Obviously the scene will change but the layer will remain the same. How is this done. I've tried-
CCScene *currentScene = [[CCDirector sharedDirector]runningScene];
[[CCDirector sharedDirector]replaceScene:currentScene];
Thanks

Answer 1

This does not work because you can't replace the same scene object with itself:
CCScene *currentScene = [[CCDirector sharedDirector]runningScene];
[[CCDirector sharedDirector]replaceScene:currentScene];
Instead you have to create a new instance of your scene, like so:
[[CCDirector sharedDirector] replaceScene:[YourSceneClass scene]];
If you don't know what the current scene class is, then this ought to work:
CCScene *currentScene = [CCDirector sharedDirector].runningScene;
CCScene *newScene = [[[currentScene class] alloc] init];
[[CCDirector sharedDirector] replaceScene:newScene];
Assuming you're using ARC as everyone should these days. Otherwise add an autorelease.

Answer 2

I ran into the same problem. I tried this
CCScene *currentScene = [CCDirector sharedDirector].runningScene;
CCScene *newScene = [[[currentScene class] alloc] init];
[[CCDirector sharedDirector] replaceScene:newScene];
and it gave me a blank screen.
The problem is this line
CCScene *newScene = [[[currentScene class] alloc] init];
[currentScene class] actually returns CCScene..
Hence
[CCScene alloc] init] gives us a blank screen.
The way how I got around this problem was by setting tag for each of my scene class.
For example:
+(CCScene *) scene
{
// 'scene' is an autorelease object.
CCScene *scene = [CCScene node];
scene.tag = 1;
// 'layer' is an autorelease object.
GameOneLayer * layer = [[[GameOneLayer alloc] init];
// add layer as a child to scene
[scene addChild: layer];
// return the scene
return scene;
}
Hope this helps.