Object-Oriented Programming (OOP) in Godot: Master Classes and Implementation Guide

Learn the fundamentals of Object-Oriented Programming (OOP) and discover how to implement it effectively in Godot, the popular open-source game development engine. In this comprehensive tutorial series, we'll dive deep into OOP concepts, including classes, objects, inheritance, and polymorphism. Whether you're a beginner or an experienced Godot user, this step-by-step guide will empower you to leverage OOP principles to create robust and modular game projects. Join us on this educational journey and unlock the full potential of Godot's OOP capabilities!

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[Any_key]

Scientific classification is a great example of Classes and inheritance.
A Dog is a Mammal, so it inherits things like fur, while a mammal is a vertebrate so they inherit spinal cords, etc. As you work down a dog has a spine because mammals do because vertebrates do.

This is a “is a” class based inheritance example. I’m sure you’ll do composition based “has a” relationships.

[alexmcfly]

Thank you! No intro, informative and to-the-point. Theory first, practice second. Subbed!

[pros_]

This is the most useful tutorial I've seen on the subject, how is this not the first result?😊

[moxingames]

I am a beginner, your video was very helpful to me.

[hiiambarney]

On the topic of class_names though, I find them incredibly useful even if I don't inherit a class anywhere as it lets me reference or instantiate, say a Player Scene "as Player" like so: "var player: Player = player_scene.instantiate() as Player".
Whenever I now type player. in this script I get full autocomplete for the Player class. I also can globally reference static functions the (in this case) player might have.
Another nifty use case I found is that I could check in a signal like "on_body_entered(body)" if the "body is Player:" and then specify var player: Player = body as Player" for the same effect as above all the while completely skipping the need for a group check or similar things, so I have a sure fire, easy to read way of checking if the body (or whatever gets transmitted in the signal) is the thing I wanna do stuff with.
Pretty sure there are more use cases but these come up so often for me.

[i_know_truth_hurts]

thank you for this man. Do you have a website where you do tutorials via articles, or just youtube only.

[katerkarlodieprinzessin]

This is very helpful, thank you so much!

[galacticgon]

So when I try to remove the extends Node2D
It just gives me an error.
Not sure if it can be done and run the code from what I am testing. I am using Godot 4.2 currently.
OVERALL though great tutorial! and super helpful!

[LocdnessMomster]

Do classes have to be branched off of a scene? Or can they be their own scripts like singletons? I'm trying to make a deck class, but when I extend I don't have access to its variables

[tangerchef]

this is so fckng useful. I'm trying to make a moba, and I was using loaded scenes to cast abilities and it was too buggy, the properties os one ability was inflencing others, as it was all just one ability.

I think this would resolve

[ensarija]

Octopuses kicked out of animal world :D

[bradexoff]

I was trying to create a state machine, but I didn't even know about classes =V

[WizQuest]

bro it's great you show pokemon, but they don't really work with subclasses. if you make a subclass of moves, it won't load them in the battle. I also wanna implement randomness like in pokemon stadium 2, no idea how to assign a template to a class.new() and call it from the game (something like if pokemon1.type1 == water, pokerandlist.remove("water"))

[nubsdre]

And how I create a virtual function? I want o override a func in the MainClass

[labreynth]

Would be better if you just showed completed classes in use then showed how they interacted, rather than empty scripts

[ScumlordStudio]

How is an octupus not an animal os my question

[alexxgg]

can we consider an octopus as an animal ? 😂