Applying certain velocities while sneaking freezes Nacho

Observed Behavior

Some plugins might occasionally set a players velocity to something like (x, y, NaN) due to invalid mathematic operations or to held a player mid air. If applying such a velocity vector while the player is sneaking, the server crashes.

     Current Thread: Server thread
            PID: 37 | Suspended: false | Native: false | State: RUNNABLE
            Stack:
                    app//net.minecraft.server.v1_8_R3.Chunk.a(Chunk.java:1108)
                    app//net.minecraft.server.v1_8_R3.Chunk.getEntitiesInAABB(Chunk.java:1097)
                    app//net.minecraft.server.v1_8_R3.World.a(World.java:2912)
                    app//net.minecraft.server.v1_8_R3.World.getEntities(World.java:2893)
                    app//net.minecraft.server.v1_8_R3.World.getCubes(World.java:1463)
                    app//net.minecraft.server.v1_8_R3.Entity.move(Entity.java:541)
                    app//net.minecraft.server.v1_8_R3.EntityLiving.g(EntityLiving.java:1431)
                    app//net.minecraft.server.v1_8_R3.EntityHuman.g(EntityHuman.java:1373)
                    app//net.minecraft.server.v1_8_R3.EntityLiving.m(EntityLiving.java:1685)
                    app//net.minecraft.server.v1_8_R3.EntityHuman.m(EntityHuman.java:396)
                    app//net.minecraft.server.v1_8_R3.EntityLiving.t_(EntityLiving.java:1525)
                    app//net.minecraft.server.v1_8_R3.EntityHuman.t_(EntityHuman.java:176)
                    app//net.minecraft.server.v1_8_R3.EntityPlayer.l(EntityPlayer.java:322)
                    app//net.minecraft.server.v1_8_R3.PlayerConnection.a(PlayerConnection.java:434)
                    app//net.minecraft.server.v1_8_R3.PacketPlayInFlying.a(SourceFile:126)
                    app//net.minecraft.server.v1_8_R3.PacketPlayInFlying$PacketPlayInPosition.a(SourceFile:57)
                    app//net.minecraft.server.v1_8_R3.PlayerConnectionUtils.lambda$ensureMainThread$0(PlayerConnectionUtils.java:6)
                    app//net.minecraft.server.v1_8_R3.PlayerConnectionUtils$$Lambda$1351/0x0000000801747cc8.run(Unknown Source)
                    java.base@17.0.1/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:539)
                    java.base@17.0.1/java.util.concurrent.FutureTask.run(FutureTask.java:264)
                    app//net.minecraft.server.v1_8_R3.SystemUtils.a(SourceFile:44)
                    app//net.minecraft.server.v1_8_R3.MinecraftServer.B(MinecraftServer.java:784)
                    app//net.minecraft.server.v1_8_R3.DedicatedServer.B(DedicatedServer.java:398)
                    app//net.minecraft.server.v1_8_R3.MinecraftServer.A(MinecraftServer.java:723)
                    app//net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:616)
                    java.base@17.0.1/java.lang.Thread.run(Thread.java:833)

Expected Behavior

Not to crash.

Steps To Reproduce

    @EventHandler
    public void onInteract(PlayerInteractEvent event) {
        final Player player = event.getPlayer();
        player.setSneaking(true);
        player.setVelocity(new Vector(Double.NaN, 0, 0));
    }

Plugin List

ViaVersion (might be important here)

Server Version

74ed0ea

Other

No response

Agreements

[X] You were able to find this issue on the latest version of NachoSpigot.
[X] You have confirmed that there aren’t any issues open regarding this bug.

CobbleSword / NachoSpigot

Applying certain velocities while sneaking freezes Nacho #409