Checks if the inventory is empty. @return true if this inventory has only empty stacks, false otherwise.

Returns the inventory size.

Replaces the current stack in an inventory slot with the provided stack. @param slot The inventory slot of which to replace the itemstack. @param sta

Retrieves the item in the slot.

Creates an inventory from the item list.

Clean up the image by setting pixels with opacity <= threshold to 0% opacity and pixels above the threshold to 100% visibility.

Clears the inventory.

Marks the state as dirty. Must be called after changes in the inventory, so that the game can properly save the inventory contents and notify neighbor

@return true if the player can use the inventory, false otherwise.

Creates a new inventory with the specified size.