Disable teleports while falling.

[BONNe]

Is your feature request related to a problem? Please describe.
For hardcore SkyBlock, if you fall into the void, then you must lose all. Unfortunately, currently, users can just write /is or /is go, to teleport back on the island. And if they put water under teleport point, they even will not die.

Describe the solution you'd like
Disable teleport commands ./is and ./is go, while a user is falling.

Describe alternatives you've considered
Use other plugins that block teleport.

[Poslovitch]

That may be a setting in the config. Or it could also be a World Setting flag. What do you think about that?

[BONNe]

For me, it is enough with setting in the config, but for others, it could be useful as the world setting flag, or even permission based.

[Poslovitch]

I'll do this as a WORLD_SETTING flag then.

Might be doable using Player#getFallDistance().

Gonna have a look at this.

[Poslovitch]

There is also this method: Player#isOnGround()... I will have to do some tests to find out which one's the best.

[BONNe]

Just one thing:
Please, avoid disabling teleport, if a player is sneaking (shift) over block edge.

It is annoying when you cannot teleport if you are over the block edge and holding shift, as it was implemented in other plugins.

Teleport should not be allowed only if a player is falling. :)

[Poslovitch]

I think it is mostly due to the methods Spigot is providing us. Plugins may be using Player#isOnGround(), which may be causing this "bug". Player#getFallDistance() might then be a better choice.

[BONNe]

Now, if the flag is enabled, the players cannot use /is home (go) command when falling.

But how about going to a different world? Will going to a different world and then returning prevent a user from falling in the void?

[Poslovitch]

@BONNe Let's discuss of that in the PR instead.

[Poslovitch]

Just merged the PR