Add API to allow/disallow tick sleeping

[Abelkrijgtalles]

Hi,
I added a simple API to Server which allows or disallows the server sleeping, as requested in #11511.
This works with a simple boolean in MinecraftServer which is now one of the requirements to sleep.
CraftServer sets this boolean whenever Server#allowSleeping gets called.
That's all, and I wish you a wonderful rest of your day!

[Abelkrijgtalles]

I could also add a check which puts the server out of sleep when this gets called.

[Abelkrijgtalles]

I have implemented the changes. The original reason to make it static was a bit dumb, because I didn't know that MinecraftServer#getServer existed. The good thing is that you learn from your mistakes :)

[jpenilla]

plugins could easily step on each other like this, it might be best to have this be a list of plugins blocking sleep or something to that effect instead

[Abelkrijgtalles]

plugins could easily step on each other like this, it might be best to have this be a list of plugins blocking sleep or something to that effect instead

Something like that all plugins have to allow it, but when only one plugin disallows it (and the others allow it) that pausing still gets disabled?

[Abelkrijgtalles]

The new system adds a Map<JavaPlugin, Boolean> to CraftServer. When the hashmap contains the value false (a plugin not allowing pausing), the server will not pause.

[Abelkrijgtalles]

I don't know how to fix this test error. Could I maybe get a bit of help?

[Leguan16]

That should fix the test.

[Abelkrijgtalles]

The tests are fixed.

[jpenilla]

I don't think a map is needed - a list or set should be enough. If the collection is not empty then sleep would be blocked.

[Abelkrijgtalles]

I don't think a map is needed - a list or set should be enough. If the collection is not empty then sleep would be blocked.

I have made these changes, the only thing is that Intellij randomly imported a bunch of things, but hopefully this isn't a problem.

[Abelkrijgtalles]

I am now using FQN imports