1
0
mirror of https://github.com/minetest/minetest_game.git synced 2024-11-11 04:30:19 +01:00
minetest_game/mods/default/craftitems.lua
red-001 26606b0520 Books: Limit the size of books
Really large books just waste hard drive space and the engine is not designed to
handle that much data in item metadata, this can cause strange things to happen.
2017-11-19 22:52:00 +01:00

336 lines
8.9 KiB
Lua

-- mods/default/craftitems.lua
minetest.register_craftitem("default:stick", {
description = "Stick",
inventory_image = "default_stick.png",
groups = {stick = 1, flammable = 2},
})
minetest.register_craftitem("default:paper", {
description = "Paper",
inventory_image = "default_paper.png",
groups = {flammable = 3},
})
local lpp = 14 -- Lines per book's page
local function book_on_use(itemstack, user)
local player_name = user:get_player_name()
local meta = itemstack:get_meta()
local title, text, owner = "", "", player_name
local page, page_max, lines, string = 1, 1, {}, ""
-- Backwards compatibility
local old_data = minetest.deserialize(itemstack:get_metadata())
if old_data then
meta:from_table({ fields = old_data })
end
local data = meta:to_table().fields
if data.owner then
title = data.title
text = data.text
owner = data.owner
for str in (text .. "\n"):gmatch("([^\n]*)[\n]") do
lines[#lines+1] = str
end
if data.page then
page = data.page
page_max = data.page_max
for i = ((lpp * page) - lpp) + 1, lpp * page do
if not lines[i] then break end
string = string .. lines[i] .. "\n"
end
end
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;Title:;" ..
minetest.formspec_escape(title) .. "]" ..
"textarea[0.5,1.5;7.5,7;text;Contents:;" ..
minetest.formspec_escape(text) .. "]" ..
"button_exit[2.5,7.5;3,1;save;Save]"
else
formspec = "size[8,8]" .. default.gui_bg ..
default.gui_bg_img ..
"label[0.5,0.5;by " .. owner .. "]" ..
"tablecolumns[color;text]" ..
"tableoptions[background=#00000000;highlight=#00000000;border=false]" ..
"table[0.4,0;7,0.5;title;#FFFF00," .. minetest.formspec_escape(title) .. "]" ..
"textarea[0.5,1.5;7.5,7;;" ..
minetest.formspec_escape(string ~= "" and string or text) .. ";]" ..
"button[2.4,7.6;0.8,0.8;book_prev;<]" ..
"label[3.2,7.7;Page " .. page .. " of " .. page_max .. "]" ..
"button[4.9,7.6;0.8,0.8;book_next;>]"
end
minetest.show_formspec(player_name, "default:book", formspec)
return itemstack
end
local max_text_size = 10000
minetest.register_on_player_receive_fields(function(player, formname, fields)
if formname ~= "default:book" then return end
local inv = player:get_inventory()
local stack = player:get_wielded_item()
if fields.save and fields.title and fields.text
and fields.title ~= "" and fields.text ~= "" then
local new_stack, data
if stack:get_name() ~= "default:book_written" then
local count = stack:get_count()
if count == 1 then
stack:set_name("default:book_written")
else
stack:set_count(count - 1)
new_stack = ItemStack("default:book_written")
end
else
data = stack:get_meta():to_table().fields
end
if data and data.owner and data.owner ~= player:get_player_name() then
return
end
if not data then data = {} end
data.title = fields.title
data.owner = player:get_player_name()
data.description = "\""..fields.title.."\" by "..data.owner
data.text = fields.text:sub(1, max_text_size)
data.page = 1
data.page_max = math.ceil((#data.text:gsub("[^\n]", "") + 1) / lpp)
if new_stack then
new_stack:get_meta():from_table({ fields = data })
if inv:room_for_item("main", new_stack) then
inv:add_item("main", new_stack)
else
minetest.add_item(player:getpos(), new_stack)
end
else
stack:get_meta():from_table({ fields = data })
end
elseif fields.book_next or fields.book_prev then
local data = stack:get_meta():to_table().fields
if not data or not data.page then
return
end
data.page = tonumber(data.page)
data.page_max = tonumber(data.page_max)
if fields.book_next then
data.page = data.page + 1
if data.page > data.page_max then
data.page = 1
end
else
data.page = data.page - 1
if data.page == 0 then
data.page = data.page_max
end
end
stack:get_meta():from_table({fields = data})
stack = book_on_use(stack, player)
end
-- Update stack
player:set_wielded_item(stack)
end)
minetest.register_craftitem("default:book", {
description = "Book",
inventory_image = "default_book.png",
groups = {book = 1, flammable = 3},
on_use = book_on_use,
})
minetest.register_craftitem("default:book_written", {
description = "Book With Text",
inventory_image = "default_book_written.png",
groups = {book = 1, not_in_creative_inventory = 1, flammable = 3},
stack_max = 1,
on_use = book_on_use,
})
minetest.register_craft({
type = "shapeless",
output = "default:book_written",
recipe = {"default:book", "default:book_written"}
})
minetest.register_on_craft(function(itemstack, player, old_craft_grid, craft_inv)
if itemstack:get_name() ~= "default:book_written" then
return
end
local original
local index
for i = 1, player:get_inventory():get_size("craft") do
if old_craft_grid[i]:get_name() == "default:book_written" then
original = old_craft_grid[i]
index = i
end
end
if not original then
return
end
local copymeta = original:get_meta():to_table()
-- copy of the book held by player's mouse cursor
itemstack:get_meta():from_table(copymeta)
-- put the book with metadata back in the craft grid
craft_inv:set_stack("craft", index, original)
end)
minetest.register_craftitem("default:skeleton_key", {
description = "Skeleton Key",
inventory_image = "default_key_skeleton.png",
groups = {key = 1},
on_use = function(itemstack, user, pointed_thing)
if pointed_thing.type ~= "node" then
return itemstack
end
local pos = pointed_thing.under
local node = minetest.get_node(pos)
if not node then
return itemstack
end
local on_skeleton_key_use = minetest.registered_nodes[node.name].on_skeleton_key_use
if not on_skeleton_key_use then
return itemstack
end
-- make a new key secret in case the node callback needs it
local random = math.random
local newsecret = string.format(
"%04x%04x%04x%04x",
random(2^16) - 1, random(2^16) - 1,
random(2^16) - 1, random(2^16) - 1)
local secret, _, _ = on_skeleton_key_use(pos, user, newsecret)
if secret then
local inv = minetest.get_inventory({type="player", name=user:get_player_name()})
-- update original itemstack
itemstack:take_item()
-- finish and return the new key
local new_stack = ItemStack("default:key")
local meta = new_stack:get_meta()
meta:set_string("secret", secret)
meta:set_string("description", "Key to "..user:get_player_name().."'s "
..minetest.registered_nodes[node.name].description)
if itemstack:get_count() == 0 then
itemstack = new_stack
else
if inv:add_item("main", new_stack):get_count() > 0 then
minetest.add_item(user:getpos(), new_stack)
end -- else: added to inventory successfully
end
return itemstack
end
end
})
minetest.register_craftitem("default:coal_lump", {
description = "Coal Lump",
inventory_image = "default_coal_lump.png",
groups = {coal = 1, flammable = 1}
})
minetest.register_craftitem("default:iron_lump", {
description = "Iron Lump",
inventory_image = "default_iron_lump.png",
})
minetest.register_craftitem("default:copper_lump", {
description = "Copper Lump",
inventory_image = "default_copper_lump.png",
})
minetest.register_craftitem("default:tin_lump", {
description = "Tin Lump",
inventory_image = "default_tin_lump.png",
})
minetest.register_craftitem("default:mese_crystal", {
description = "Mese Crystal",
inventory_image = "default_mese_crystal.png",
})
minetest.register_craftitem("default:gold_lump", {
description = "Gold Lump",
inventory_image = "default_gold_lump.png",
})
minetest.register_craftitem("default:diamond", {
description = "Diamond",
inventory_image = "default_diamond.png",
})
minetest.register_craftitem("default:clay_lump", {
description = "Clay Lump",
inventory_image = "default_clay_lump.png",
})
minetest.register_craftitem("default:steel_ingot", {
description = "Steel Ingot",
inventory_image = "default_steel_ingot.png",
})
minetest.register_craftitem("default:copper_ingot", {
description = "Copper Ingot",
inventory_image = "default_copper_ingot.png",
})
minetest.register_craftitem("default:tin_ingot", {
description = "Tin Ingot",
inventory_image = "default_tin_ingot.png",
})
minetest.register_craftitem("default:bronze_ingot", {
description = "Bronze Ingot",
inventory_image = "default_bronze_ingot.png",
})
minetest.register_craftitem("default:gold_ingot", {
description = "Gold Ingot",
inventory_image = "default_gold_ingot.png"
})
minetest.register_craftitem("default:mese_crystal_fragment", {
description = "Mese Crystal Fragment",
inventory_image = "default_mese_crystal_fragment.png",
})
minetest.register_craftitem("default:clay_brick", {
description = "Clay Brick",
inventory_image = "default_clay_brick.png",
})
minetest.register_craftitem("default:obsidian_shard", {
description = "Obsidian Shard",
inventory_image = "default_obsidian_shard.png",
})
minetest.register_craftitem("default:flint", {
description = "Flint",
inventory_image = "default_flint.png"
})