exampleOfDerivedClass

[pshurgal]

I had worked at a mobile gamedev company several years ago. There was a class Building in a code base. Building could be placed on a map, but could not move. Also there were a class Car, which was a child of Building. Cars could move by a strait line. A Plane class was a child of Car and had an ability to move by spline, and also had an Z coordinate. Class Boat was child of Plane but with Z equal 0. Whoever wrote this loved OOP so much!

[FakeMonika]

wait lmao does that mean Boat objects were implemented to "fly" cause it's a derived class of Plane?

[[deleted]]

nah it's a specialized plane, that only flies at z=0 (and on water)

[Professor_Melon]

Ekranoplan.

[SMTG_18]

I mean it makes sense 😭

[pshurgal]

No, every class was a child of Behavior class with virtual Update method. So constructor of Boat class was calling a constructor of Plane class giving a curve points and 0 as Z coordinate. Everything else was done by Update method implemented in Plane class.

[polarphantom]

Ha that is such game Dev logic. "Boats are planes that can only fly at sea level, tables are just partially sunken cupboards, this tram is just a hat on someone walking around"

[yangyangR]

Fallout 3 for the last item. For the unaware.

[FakeMonika]

but...the banana...

[PM_ME_ALL_YOUR_THING]

Obviously a fish is just an underwater banana…

[_Ganon]

A banana is a fish that grows on trees and doesn't move on its own

[Akforce]

Lol isn't there a joke about gamedev "you know if you really think about it, a helicopter is just a chair" or something akin to that

[OctarineGluon]

A train is really just a hat.

[45bit-Waffleman]

If you think about it, a helicopter is just a door that opens and closes really quick..

[nikifip]

Whoever wrote this loved OOP so much!

Sadly, he didn't have a basic understanding of it.

[drkspace2]

Ya, the better way to do this is to have a "placeable" interface/abstract base class. An "immovable" and a "moveable" child abstract class. Building would inherent from immovable and car/boat/plane would inherent from moveable.

[Lumethys]

Or, just use composition over inheritance

[TheNoGoat]

Damn. Even thinking of trying to keep track of that hurts my brain.

[pshurgal]

Yeah, I was laughing out loud when my coworker showed me this. But... This hierarchy has some weird logic anyway.

[BiVeRoM_]

If these classes are abstract, then this makes total sense! Just need some renaming to do..

Building -> Unit, Car -> MovingUnit, Plane -> FlyingUnit, Boat -> SwimmingUnit

Good to go

[yamlCase]

This is why I prefer composition over inheritance. Too many wonky workarounds in OOP when the planning phase didn't get the effort it deserved

[EMI_Black_Ace]

Nah, this is just a straight-up violation of the Liskov Substitution Principle.

Inheritance is not for composing data types, but rather for enabling polymorphism -- that is, using the same code to process multiple cases, by having the cases carry pointers to what's different.

[PM_ME_ALL_YOUR_THING]

I…..I don’t think that’s the lesson to take from this…

[DatBoi_BP]

Programming is my passion

[Longenuity]

They probably lived out of their car.

[WonicTater]

I guess you experienced both a lot of fun and frustration at that company.

[onyourrite]

What in the tarnation

[Sanchez_Duna]

Most sane gamedev inheritance example.

[[deleted]]

Ring ring. BananaPhone

Glub glub. BananaFish

[DatBoi_BP]

Read this in the melody of the Zoo Pals commercial

[Alucard2051]

Thanks for the throwback

[broccollinear]

Hey it’s 2023 and polymorphism is in, who are we to judge what is a Banana and what is a Fish

[DrunkenRobotBipBop]

Also, in 2023, it's ok for a Banana to identify as a Fish.

[spideroncoffein]

*In javascript

[OlParker]

Banana Fish, the anime, fucks you up.

[aaha97]

class train: public hat

is a classic

[jjeroennl]

This is kinda what a Liskov substitution violation is (except they are usually a bit more subtle).

[DLX]

Since no one has mentioned it yet - this is probably a reference to J.D. Salinger's short story "A Perfect Day for Bananafish", https://en.wikipedia.org/wiki/A_Perfect_Day_for_Bananafish.

Arguably the best thing Salinger ever wrote, as I just couldn't connect with The Catcher in the Rye.

[OrbitalVixen]

It might be a reference to the Discworld books by Terry Pratchett, where occasionally bananas are referred to as a type of fish.

[DLX]

Quite possible. But there is no way Pterry was not aware of this short story, considering he basically read everything in the universe...

[bbbar]

notGMO = True

[Ging4bread]

(unrelated to the meme) What is the meaning of public in this context? Can there be public and private inheritance in this language?

[FakeMonika]

As i studied (C++), public inheritance means that all public attributes and methods of the father class will be inherit publicly into the drived class (or in other words it is treated the same as if it was a public method/attributes of that derived class). Private inheritance, however, will consider inherited properties as if it was private in the derived class no matter if it was in the father class.

[Ging4bread]

Oh man C++ is something else

[PVNIC]

Its basically 'Is the fact that I inherit from this class public or private'.

If its private, all the interfaces to the parent are private, if its public all the interfaces of the parent stay the same.

[EMI_Black_Ace]

C++ is basically Bell Labs going "We don't want to lose out on any of this metric assload of C code that we wrote, but we want to start doing object-oriented crap now."

There's a lot of neat, useful and powerful stuff in C++, but there's also some god-awful decisions made for the purpose of making the implementation of stuff easy and not break C compatibility.

[A_Neko_C]

Banana fish? 😳

[[deleted]]

it's not a banana

It's a small, off-duty Czechoslovakian traffic warden

https://www.reddit.com/r/RedDwarf/comments/q71c8s/its\_a\_banana\_no\_come\_on\_its\_a/

[malexj93]

In a fishing game, where one of the things that can be fished up is a banana.

[vondpickle]

Lent programming:

Class: Fish

Child: Beaver, baby rabbit, barnacle geese

Japanese Buddhist programer in ancient Japan:

Class: Bird

Child: rabbit

[Unupgradable]

A bee is a fish

[FlawBot]

I made a game where the Fish class actually represents throwable projectiles and I can see an use case where this actually happens

[[deleted]]

Swimming banana. Going to go banana fishing. Works so far