inventory

getStackInSlot(int slot): ItemStack

Gives the ItemStack that is in the requested slot, if the slot is empty this method returns null.

currentSlot(): int

Returns the selected hotbar slot as int, the current slot will always be in between 0 and 8.

setCurrentSlot(int slot): void

Set the selected hotbar slot, please be aware that this does not send a packet to the server.

getPlacableBlockSlot(): int

Gives a hotbar slot with a placable block stack, if there is no usable slot it will return -1.