display_item.lua

local tmp = {}

core.register_entity("fancy_vend:display_item", {
	hp_max = 1,
	visual = "wielditem",
	visual_size = {x = 0.33, y = 0.33},
	collisionbox = {0, 0, 0, 0, 0, 0},
	physical = false,
	textures = {"air"},
	on_activate = function(self, staticdata)
		if tmp.nodename ~= nil and tmp.texture ~= nil then
			self.nodename = tmp.nodename
			tmp.nodename = nil
			self.texture = tmp.texture
			tmp.texture = nil
		else
			if staticdata ~= nil and staticdata ~= "" then
				local data = staticdata:split(";")
				if data and data[1] and data[2] then
					self.nodename = data[1]
					self.texture = data[2]
				end
			end
		end
		if self.texture ~= nil then
			self.object:set_properties({textures = {self.texture}})
		end
		self.object:set_properties({automatic_rotate = fancy_vend.autorotate_speed})
	end,
	get_staticdata = function(self)
		if self.nodename ~= nil and self.texture ~= nil then
			return self.nodename..";"..self.texture
		end
		return ""
	end,
})

function fancy_vend.remove_item(pos)
	local objs = core.get_objects_inside_radius(pos, .5)
	if objs then
		for _, obj in ipairs(objs) do
			if obj and obj:get_luaentity() and obj:get_luaentity().name == "fancy_vend:display_item" then
				obj:remove()
			end
		end
	end
end

function fancy_vend.update_item(pos, node)
	pos.y = pos.y + 1
	fancy_vend.remove_item(pos)
	if core.get_node(pos).name ~= "fancy_vend:display_node" then
		core.log("warning",
			"[fancy_vend]: Placing display item inside "..
			core.get_node(pos).name.." at "..core.pos_to_string(pos)..
			" is not permitted, aborting"
		)
		pos.y = pos.y - 1
		return
	end
	pos.y = pos.y - 1
	local meta = core.get_meta(pos)
	if meta:get_string("item") ~= "" then
		pos.y = pos.y + (12 / 16 + 0.11)
		tmp.nodename = node.name
		tmp.texture = ItemStack(meta:get_string("item")):get_name()
		core.add_entity(pos, "fancy_vend:display_item")
		pos.y = pos.y - (12 / 16 + 0.11)
	end
end