Animefan8888

Why not just install forge 1.15 and take the version.json from there?

Here is the forge documentation on Capabilities they are somewhat tricky to learn, but once you know what you need to do you'll be kicking yourself later.

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That will work if the Entity is guaranteed to have been given your equipment. However, that is not the case. What if another mod changes the equipment or your method determines that it doesn't get an item. You should instead attach a capability to the Entity to check if you have already tried to add your equipment.

Probably. Another problem with using EntityJoinWorldEvent is the equipment on an Entity loaded from disk will have it's equipment changed.

This is the best I can give you for I do not use IntelliJ.

Set a breakpoint in your event and see what is happening.

The equipment for entities is put on the Entity after LivingSpawnEvent.SpecialSpawn is called. Therefore it overrides yours. You should use EntityJoinWorldEvent instead.

You can't Item's are singletons. But there is something that stores Items which is not a singleton. It's called an ItemStack. You'll notice a lot of methods take ItemStack as a parameter you can use ItemStack::setTag and ItemStack::getTag to store stack based information.

It's hard to see what's wrong when one can't see the thing that is going wrong. Post your code.

Yes you can. However you fire the event and your event only sets the events new height. It doesn't actually set the eye height. When the event is normally fired you'll notice that after it has fired forge takes the new eye height from the event and uses that.

I'd love to see a list of these so i can share them with people who try to learn Java by learning how to mod.

Have you downloaded/played the vanilla version of Minecraft 1.15.2?

Make a computer that has infinite accuracy. Your problem lies with the precision of floating point notation.

Post your updated code.