homedecor_modpack/homedecor/books.lua

local S = homedecor.gettext

local bookcolors = {
	"red",
	"green",
	"blue",
	"violet",
	"grey",
	"brown"
}

local BOOK_FORMNAME = "homedecor:book_form"

for c in ipairs(bookcolors) do
	local color = bookcolors[c]
	local color_d = S(bookcolors[c])

	local function book_dig(pos, node, digger)
		if minetest.is_protected(pos, digger:get_player_name()) then return end
		local meta = minetest.get_meta(pos)
		local stack = ItemStack({
			name = "homedecor:book_"..color,
			metadata = meta:get_string("text"),
		})
		stack = digger:get_inventory():add_item("main", stack)
		if not stack:is_empty() then
			minetest.item_drop(stack, digger, pos)
		end
		minetest.remove_node(pos)
	end

homedecor.register("book_"..color, {
	description = S("Book (%s)"):format(color_d),
	mesh = "homedecor_book.obj",
	tiles = { "homedecor_book_"..color..".png" },
	inventory_image = "homedecor_book_"..color.."_inv.png",
	wield_image = "homedecor_book_"..color.."_inv.png",
	groups = { snappy=3, oddly_breakable_by_hand=3, book=1 },
	stack_max = 1,
	on_rightclick = function(pos, node, clicker)
		local fdir = node.param2
		minetest.swap_node(pos, { name = "homedecor:book_open_"..color, param2 = fdir })
	end,
	on_place = function(itemstack, placer, pointed_thing)
		local plname = placer:get_player_name()
		local pos = pointed_thing.under
		local node = minetest.get_node(pos)
		local n = minetest.registered_nodes[node.name]
		if not n.buildable_to then
			pos = pointed_thing.above
			node = minetest.get_node(pos)
			n = minetest.registered_nodes[node.name]
			if not n.buildable_to then return end
		end
		if minetest.is_protected(pos, plname) then return end
		local fdir = minetest.dir_to_facedir(placer:get_look_dir())
		minetest.set_node(pos, {
			name = "homedecor:book_"..color,
			param2 = fdir,
		})
		local text = itemstack:get_metadata() or ""
		local meta = minetest.get_meta(pos)
		meta:set_string("text", text)
		local data = minetest.deserialize(text) or {}
		if data.title and data.title ~= "" then
			meta:set_string("infotext", data.title)
		end
		if not minetest.setting_getbool("creative_mode") then
			itemstack:take_item()
		end
		return itemstack
	end,
	on_dig = book_dig,
	on_use = function(itemstack, user, pointed_thing)
		local player_name = user:get_player_name()
		local data = minetest.deserialize(itemstack:get_metadata())
		local title, text, owner = "", "", player_name
		if data then
			title, text, owner = data.title, data.text, data.owner
		end
		local formspec
		if owner == player_name then
			formspec = "size[8,8]"..default.gui_bg..default.gui_bg_img..
				"field[0.5,1;7.5,0;title;Book title :;"..
					minetest.formspec_escape(title).."]"..
				"textarea[0.5,1.5;7.5,7;text;Book content :;"..
					minetest.formspec_escape(text).."]"..
				"button_exit[2.5,7.5;3,1;save;Save]"
		else
			formspec = "size[8,8]"..default.gui_bg..
			"button_exit[7,0.25;1,0.5;close;X]"..
			default.gui_bg_img..
				"label[0.5,0.5;by "..owner.."]"..
				"label[0.5,0;"..minetest.formspec_escape(title).."]"..
				"textarea[0.5,1.5;7.5,7;;"..minetest.formspec_escape(text)..";]"
		end
		minetest.show_formspec(user:get_player_name(), BOOK_FORMNAME, formspec)
	end,
	selection_box = {
            type = "fixed",
			fixed = {-0.2, -0.5, -0.25, 0.2, -0.35, 0.25}
	},
	collision_box = {
            type = "fixed",
			fixed = {-0.15, -0.5, -0.25, 0.15, -0.35, 0.25}
	},
})

homedecor.register("book_open_"..color, {
	mesh = "homedecor_book_open.obj",
	tiles = { "homedecor_book_open_"..color..".png" },
	groups = { snappy=3, oddly_breakable_by_hand=3, not_in_creative_inventory=1 },
	drop = "homedecor:book_"..color,
	on_dig = book_dig,
	on_rightclick = function(pos, node, clicker)
		local fdir = node.param2
		minetest.swap_node(pos, { name = "homedecor:book_"..color, param2 = fdir })
		minetest.sound_play("homedecor_book_close", {
			pos=pos,
			max_hear_distance = 3,
			gain = 2,
			})
	end,
	selection_box = {
            type = "fixed",
			fixed = {-0.35, -0.5, -0.25, 0.35, -0.4, 0.25}
	},
	collision_box = {
            type = "fixed",
			fixed = {-0.35, -0.5, -0.25, 0.35, -0.4, 0.25}
	},
})

end

minetest.register_on_player_receive_fields(function(player, form_name, fields)
	if form_name ~= BOOK_FORMNAME or not fields.save then
		return
	end
	local stack = player:get_wielded_item()
	if minetest.get_item_group(stack:get_name(), "book") == 0 then
		return
	end
	local data = minetest.deserialize(stack:get_metadata()) or {}
	data.title, data.text, data.owner =
		fields.title, fields.text, player:get_player_name()
	stack:set_metadata(minetest.serialize(data))
	player:set_wielded_item(stack)
	minetest.log("action", player:get_player_name().." has written in a book (title: \""..fields.title.."\"): \""..fields.text..
		"\" at location: "..minetest.pos_to_string(player:getpos()))
end)