Sharpening the Battle Result with a Class

Hey @Farry7!

No worries! This stuff is hard! Let me see if I can help :).

Let's look at each part:

1) You're correct that $battleResult/code> is an "instance" of the BattleResult class, which means that when we call getWinningShip() we are calling the getWinningShip())` inside the BattleResult class.

2) Now, when we call $battleResult->getWinningShip(), what value does that return? It returns a Ship object.

3) So, when we call ->getName(), that is actually being called on the Ship object, not on BattleResult.

That still... may not be a good explanation, so let's walk through the whole flow :).

A) The battle() method in BattleManager is what's responsible for instantiating the BattleResult object - https://symfonycasts.com/screencast/oo-ep2/battle-result-model#codeblock-ea7db2497c - when it does this, it passes $winningShip as the 2nd argument, which is a Ship object.

B) Then, in Ship's __construct() method, that 2nd argument (which, remember, is a Ship object) is set onto the $winningShip property of BattleResult: https://symfonycasts.com/screencast/oo-ep2/battle-result-model#codeblock-ea7db2497c

C) Finally, when we use the BattleResult object: $battleResult->getWinningShip()->getName(). To be more clear, we could write this one line onto multiple lines:

// the getWinningShip() method returns BattleResult's $winningShip property
// this means that we know that $winningShip is a Ship object
$winningShip = $battleResult->getWinningShip();

// we call the getName() method on the Ship object
$winningShip->getName();

Really, $battleResult->getWinningShip()->getName() is just a longer version of what I wrote above.

Let me know if that helps!

Cheers!

Hey Travel,

We're sorry about that, and thank you for your feedback! I see you're on a 3rd chapter now, so may I think that you finally nailed the 1st chapter? What exactly was confusing in 1st chapter? Could you tell us a bit more? And also, do you need any help/clarification on some things you didn't get in the 1st chapter?

Cheers!

I am learning a ton from these videos, but I am a novice to programming. To answer your question, I do follow all steps, but sometimes I move on to next chapter even though I did not get everything on the previous chapter. As I mentioned I am new to programming lol. Thank you

Hey Travel,

Ah, ok, I see. Well, it's totally OK if you don't get *everything* from the video, especially when you're a newbie ;) Sometimes next chapters may answer most of your questions, or make things more obvious for you.

But don't hesitate to ask questions in comments below videos if you didn't get something from the video - we will try to explain it to you from a different side :)

Cheers!

Hey boykodev

That's just a way to reference to a method of a class, like in some sort of documentation file but that is not actual code.

Cheers!