[1.7] Event for all activated Components (C++)

As you named GetRequiredServices I guess you intend to know in a Component if all other required components are just ready to use.

It sound strange that GetRequiredServices doesn't make them Initialize in the right order(maybe order is only preserved for system entity components and normal entity have a simpler implementation?Source code need to be checked).

However a trivial trick is to defer the final initialization appling for the tick bus finalize the initialization during the tick and then disable the tick again.

If you just use tick for your component this trick is far from elegant as you need to branch by a new variable or init a variable you just have to a value that signals you didn't initialized yet.

This also works in lua where you may even tick in a different table where you will then change again the target for the next tick.