Running a RepeatForever action immediately after another Action

cocos2d-x C++
1

I want to run a RepeatForever action on a sprite, but I want to run an initial Action on it first.

I’ve tried putting the initial Action inside a Sequence, followed by a CallFunc that assigns the RepeatForever action.

Sprite *sprite;

...

sprite = Sprite::create(...);

RepeatForever *repeatingAction = RepeatForever::create(...);

FiniteTimeAction *startAction = ...
CallFunc *switchToRepatingAction = CallFunc::create([&]()
{
    sprite->runAction(repeatingAction);
});
Sequence *startSequence = Sequence::create(startAction, switchToRepatingAction, nullptr);

sprite->runAction(startSequence);

I get a EXC_BAD_ACCESS error though when I get to sprite->runAction(repeatingAction) inside switchToRepatingAction’s lambda.

I’ll note that this is happening inside the init method of a Node subclass of which sprite is a member variable.

Is it also true that I can’t put a RepeatForever action directly inside a Sequence, even if I put it at the very end? I just tried doing this and my game locked up after the sprite ran startAction.

2

you need to retain the repeatingAction and release it inside of the lamda (after the runAction) to keep it alive until the lambda executes.

3

I added the retain and release. I still got an EXC_BAD_ACCESS error though, which was only fixed when I also changed the lambda from an & capture to an = capture.

4

try CallFunc::create([&, sprite]()
instead of CallFunc::create([&]()