Add the RunOnce decorator node

[galou]

This adds a RunOnce decorator node that will call its child' executeTick() only once. After the first time, it'll return the return value of child's status().

Signed-off-by: Gaël Écorchard [email protected]

[facontidavide]

It is ok for me to merge this

[galou]

I changed according to your wish but the functionality was not affected.

[facontidavide]

I am still thinking about what the desired behavior is for Asynchronous children.

May be this make more sense?

auto status = child_node_->executeTick();
if(status == NosteStatus::SUCCESS || status == NosteStatus::FAILURE) {
   already_ticked_ = true;
}
return status;

Otherwise we don't complete RUNNING children

[galou]

I thought that the async child would change it's status without the need to be ticked. Am I right?

[facontidavide]

no, not necessarily. This is much safer, in my opinion

[facontidavide]

Merged with some important improvements

3efde1e

[galou]

Nice, sorry for not having reacted on this.