Notes on Unity

So I decided to try some game programming in Unity¹.

Since it's all new to me, I'd thought I'd write some notes here, to remember how I did some things.

Skybox

add here how to add a skybox

Movement

also navigation

References

[1] Wikipedia - Unity

https://en.wikipedia.org/wiki/Unity_(game_engine)

Payara and Jakarta 9

Interesting.

There's a tech preview in the latest Payara 5 application server¹, that allows deploying Jakarta EE 9 applications.

The Eclipse Transformer basically auto transforms the classes and resource files back to the old packages, upon deployment.

References

[1] Payara - Eclipse Transformer Configuration Option with Jakarta 9 Milestone Release

https://blog.payara.fish/eclipse-transformer-configuration

The Three options with Optional

There are basically three ways to deal with an optional, when receiving one.

1. throw an exception if the optional is empty, because it's a faulty situation. (.orElseThrow)
2. do not do anything, but proceed with the next step. (.ifPresent(dosomething))
3. provide a default value. (.orElse(default))

I'm writing it down here, because each of these three cases is highly dependent on context.

And I've noticed in my work that I have a tendency to take option 2, even though it might be considered an error.

Finding the index of an element in a List using Streams

So, I recently had a need to find out the index of an element in a List.

I could take the traditional approach, and use a for loop.

But I was wondering if I could use Streams, and if I could, would that be "better" (for some vague notion of "Better").

Any comments on what you would prefer, and why?

References

Baeldung - How to Iterate Over a Stream With Indices

https://www.baeldung.com/java-stream-indices