unified_inventory/internal.lua

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local S = minetest.get_translator("unified_inventory")
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local F = minetest.formspec_escape
local ui = unified_inventory
-- This pair of encoding functions is used where variable text must go in
-- button names, where the text might contain formspec metacharacters.
-- We can escape button names for the formspec, to avoid screwing up
-- form structure overall, but they then don't get de-escaped, and so
-- the input we get back from the button contains the formspec escaping.
-- This is a game engine bug, and in the anticipation that it might be
-- fixed some day we don't want to rely on it. So for safety we apply
-- an encoding that avoids all formspec metacharacters.
function ui.mangle_for_formspec(str)
return string.gsub(str, "([^A-Za-z0-9])", function (c) return string.format("_%d_", string.byte(c)) end)
end
function ui.demangle_for_formspec(str)
return string.gsub(str, "_([0-9]+)_", function (v) return string.char(v) end)
end
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-- Get the player-specific unified_inventory style
function ui.get_per_player_formspec(player_name)
local draw_lite_mode = ui.lite_mode and not minetest.check_player_privs(player_name, {ui_full=true})
local style = table.copy(draw_lite_mode and ui.style_lite or ui.style_full)
style.is_lite_mode = draw_lite_mode
return style
end
-- Creates an item image or regular image button with a tooltip
local function formspec_button(ui_peruser, name, image, offset, pos, scale, label)
local element = 'image_button'
if minetest.registered_items[image] then
element = 'item_image_button'
elseif image:find(":", 1, true) then
image = "unknown_item.png"
end
local spc = (1-scale)*ui_peruser.btn_size/2
local size = ui_peruser.btn_size*scale
return string.format("%s[%f,%f;%f,%f;%s;%s;]", element,
(offset.x or offset[1]) + ( ui_peruser.btn_spc * (pos.x or pos[1]) ) + spc,
(offset.y or offset[2]) + ( ui_peruser.btn_spc * (pos.y or pos[2]) ) + spc,
size, size, image, name) ..
string.format("tooltip[%s;%s]", name, F(label or name))
end
-- Add registered buttons (tabs)
local function formspec_tab_buttons(player, formspec, style)
local n = #formspec + 1
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-- Main buttons
local filtered_inv_buttons = {}
for _, def in pairs(ui.buttons) do
if not (style.is_lite_mode and def.hide_lite) then
if def.condition == nil or def.condition(player) or not ui.hide_disabled_buttons then
table.insert(filtered_inv_buttons, def)
end
end
end
local needs_scrollbar = #filtered_inv_buttons > style.main_button_cols * style.main_button_rows
formspec[n] = ("scroll_container[%g,%g;%g,%g;tabbtnscroll;vertical]"):format(
style.main_button_x, style.main_button_y, -- position
style.main_button_cols * style.btn_spc, style.main_button_rows -- size
)
n = n + 1
for i, def in pairs(filtered_inv_buttons) do
local pos_x = ((i - 1) % style.main_button_cols) * style.btn_spc
local pos_y = math.floor((i - 1) / style.main_button_cols) * style.btn_spc
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if def.type == "image" then
if (def.condition == nil or def.condition(player)) then
formspec[n] = string.format("image_button[%g,%g;%g,%g;%s;%s;]",
pos_x, pos_y, style.btn_size, style.btn_size,
F(def.image),
F(def.name))
formspec[n+1] = "tooltip["..F(def.name)..";"..(def.tooltip or "").."]"
n = n+2
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else
formspec[n] = string.format("image[%g,%g;%g,%g;%s^[colorize:#808080:alpha]",
pos_x, pos_y, style.btn_size, style.btn_size,
def.image)
n = n+1
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end
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end
end
formspec[n] = "scroll_container_end[]"
if needs_scrollbar then
local total_rows = math.ceil(#filtered_inv_buttons / style.main_button_cols)
formspec[n+1] = ("scrollbaroptions[max=%i;arrows=hide]"):format(
-- This calculation is not 100% accurate but "good enough"
(total_rows - style.main_button_rows) * style.btn_spc * 10
)
formspec[n+2] = ("scrollbar[%g,%g;0.4,%g;vertical;tabbtnscroll;0]"):format(
style.main_button_x + style.main_button_cols * style.btn_spc - 0.1, -- x pos
style.main_button_y, -- y pos
style.main_button_rows * style.btn_spc -- height
)
formspec[n+3] = "scrollbaroptions[max=1000;arrows=default]"
end
end
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-- Add category GUI elements (top right)
local function formspec_add_categories(player, formspec, ui_peruser)
local player_name = player:get_player_name()
local n = #formspec + 1
local categories_pos = {
ui_peruser.page_x,
ui_peruser.page_y-ui_peruser.btn_spc-0.5
}
local categories_scroll_pos = {
ui_peruser.page_x,
ui_peruser.form_header_y - (ui_peruser.is_lite_mode and 0 or 0.2)
}
formspec[n] = string.format("background9[%f,%f;%f,%f;%s;false;16]",
ui_peruser.page_x-0.15, categories_scroll_pos[2],
(ui_peruser.btn_spc * ui_peruser.pagecols) + 0.2, 1.4 + (ui_peruser.is_lite_mode and 0 or 0.2),
"ui_smallbg_9_sliced.png")
n = n + 1
formspec[n] = string.format("label[%f,%f;%s]",
ui_peruser.page_x,
ui_peruser.form_header_y + (ui_peruser.is_lite_mode and 0.3 or 0.2), F(S("Category:")))
n = n + 1
local scroll_offset = 0
local category_count = #ui.category_list
if category_count > ui_peruser.pagecols then
scroll_offset = ui.current_category_scroll[player_name]
end
for index, category in ipairs(ui.category_list) do
local column = index - scroll_offset
if column > 0 and column <= ui_peruser.pagecols then
local scale = 0.8
if ui.current_category[player_name] == category.name then
scale = 1
end
formspec[n] = formspec_button(ui_peruser, "category_"..category.name, category.symbol, categories_pos, {column-1, 0}, scale, category.label)
n = n + 1
end
end
if category_count > ui_peruser.pagecols and scroll_offset > 0 then
-- prev
formspec[n] = formspec_button(ui_peruser, "prev_category", "ui_left_icon.png", categories_scroll_pos, {ui_peruser.pagecols - 2, 0}, 0.8, S("Scroll categories left"))
n = n + 1
end
if category_count > ui_peruser.pagecols and category_count - scroll_offset > ui_peruser.pagecols then
-- next
formspec[n] = formspec_button(ui_peruser, "next_category", "ui_right_icon.png", categories_scroll_pos, {ui_peruser.pagecols - 1, 0}, 0.8, S("Scroll categories right"))
end
end
local function formspec_add_search_box(player, formspec, ui_peruser)
local player_name = player:get_player_name()
local n = #formspec + 1
formspec[n] = "field_close_on_enter[searchbox;false]"
formspec[n+1] = string.format("field[%f,%f;%f,%f;searchbox;;%s]",
ui_peruser.page_buttons_x, ui_peruser.page_buttons_y,
ui_peruser.searchwidth - 0.1, ui_peruser.btn_size,
F(ui.current_searchbox[player_name]))
formspec[n+2] = string.format("image_button[%f,%f;%f,%f;ui_search_icon.png;searchbutton;]",
ui_peruser.page_buttons_x + ui_peruser.searchwidth, ui_peruser.page_buttons_y,
ui_peruser.btn_size,ui_peruser.btn_size)
formspec[n+3] = "tooltip[searchbutton;" ..F(S("Search")) .. "]"
formspec[n+4] = string.format("image_button[%f,%f;%f,%f;ui_reset_icon.png;searchresetbutton;]",
ui_peruser.page_buttons_x + ui_peruser.searchwidth + ui_peruser.btn_spc,
ui_peruser.page_buttons_y,
ui_peruser.btn_size, ui_peruser.btn_size)
formspec[n+5] = "tooltip[searchresetbutton;"..F(S("Reset search and display everything")).."]"
if ui.activefilter[player_name] ~= "" then
formspec[n+6] = string.format("label[%f,%f;%s: %s]",
ui_peruser.page_x, ui_peruser.page_y - 0.25,
F(S("Filter")), F(ui.activefilter[player_name]))
end
end
local function formspec_add_item_browser(player, formspec, ui_peruser)
local player_name = player:get_player_name()
local n = #formspec + 1
-- Controls to flip items pages
local btnlist = {
{ "ui_skip_backward_icon.png", "start_list", S("First page") },
{ "ui_doubleleft_icon.png", "rewind3", S("Back three pages") },
{ "ui_left_icon.png", "rewind1", S("Back one page") },
{ "ui_right_icon.png", "forward1", S("Forward one page") },
{ "ui_doubleright_icon.png", "forward3", S("Forward three pages") },
{ "ui_skip_forward_icon.png", "end_list", S("Last page") },
}
if ui_peruser.is_lite_mode then
btnlist[2] = nil
btnlist[5] = nil
end
local bn = 0
for _, b in pairs(btnlist) do
formspec[n] = string.format("image_button[%f,%f;%f,%f;%s;%s;]",
ui_peruser.page_buttons_x + ui_peruser.btn_spc*bn,
ui_peruser.page_buttons_y + ui_peruser.btn_spc,
ui_peruser.btn_size, ui_peruser.btn_size,
b[1],b[2])
formspec[n+1] = "tooltip["..b[2]..";"..F(b[3]).."]"
bn = bn + 1
n = n + 2
end
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-- Items list
if #ui.filtered_items_list[player_name] == 0 then
local no_matches = S("No matching items")
if ui_peruser.is_lite_mode then
no_matches = S("No matches.")
end
formspec[n] = "label["..ui_peruser.page_x..","..(ui_peruser.page_y+0.15)..";" .. F(no_matches) .. "]"
return
end
local dir = ui.active_search_direction[player_name]
local list_index = ui.current_index[player_name]
local page2 = math.floor(list_index / (ui_peruser.items_per_page) + 1)
local pagemax = math.floor(
(#ui.filtered_items_list[player_name] - 1)
/ (ui_peruser.items_per_page) + 1)
for y = 0, ui_peruser.pagerows - 1 do
for x = 0, ui_peruser.pagecols - 1 do
local name = ui.filtered_items_list[player_name][list_index]
local item = minetest.registered_items[name]
if item then
-- Clicked on current item: Flip crafting direction
if name == ui.current_item[player_name] then
local cdir = ui.current_craft_direction[player_name]
if cdir == "recipe" then
dir = "usage"
elseif cdir == "usage" then
dir = "recipe"
end
else
-- Default: use active search direction by default
dir = ui.active_search_direction[player_name]
end
local button_name = "item_button_" .. dir .. "_"
.. ui.mangle_for_formspec(name)
formspec[n] = ("item_image_button[%f,%f;%f,%f;%s;%s;]"):format(
ui_peruser.page_x + x * ui_peruser.btn_spc,
ui_peruser.page_y + y * ui_peruser.btn_spc,
ui_peruser.btn_size, ui_peruser.btn_size,
name, button_name
)
local tooltip = item.description
if item.mod_origin then
-- "mod_origin" may not be specified for items that were
-- registered in a callback (during or before ServerEnv init)
tooltip = tooltip .. " [" .. item.mod_origin .. "]"
end
formspec[n + 1] = ("tooltip[%s;%s]"):format(
button_name, minetest.formspec_escape(tooltip)
)
n = n + 2
end
list_index = list_index + 1
end
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end
formspec[n] = "style[page_number;content_offset=0]"
formspec[n + 1] = string.format("image_button[%f,%f;%f,0.4;;page_number;%s: %s;false;false;]",
ui_peruser.page_buttons_x,
ui_peruser.page_buttons_y + ui_peruser.btn_spc * 2 - 0.1,
ui_peruser.btn_spc * (bn - 1) + ui_peruser.btn_size,
F(S("Page")), S("@1 of @2",page2,pagemax))
end
function ui.get_formspec(player, page)
if not player then
return ""
end
local player_name = player:get_player_name()
local ui_peruser = ui.get_per_player_formspec(player_name)
ui.current_page[player_name] = page
local pagedef = ui.pages[page]
if not pagedef then
return "" -- Invalid page name
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end
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local fs = {
"formspec_version[4]",
"size["..ui_peruser.formw..","..ui_peruser.formh.."]",
pagedef.formspec_prepend and "" or "no_prepend[]",
ui.standard_background
}
local perplayer_formspec = ui.get_per_player_formspec(player_name)
local fsdata = pagedef.get_formspec(player, perplayer_formspec)
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fs[#fs + 1] = fsdata.formspec
formspec_tab_buttons(player, fs, ui_peruser)
if fsdata.draw_inventory ~= false then
-- Player inventory
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fs[#fs + 1] = "listcolors[#00000000;#00000000]"
fs[#fs + 1] = ui_peruser.standard_inv
end
if fsdata.draw_item_list == false then
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return table.concat(fs, "")
end
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formspec_add_categories(player, fs, ui_peruser)
formspec_add_search_box(player, fs, ui_peruser)
formspec_add_item_browser(player, fs, ui_peruser)
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return table.concat(fs)
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end
function ui.set_inventory_formspec(player, page)
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if player then
player:set_inventory_formspec(ui.get_formspec(player, page))
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end
end
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function ui.is_itemdef_listable(def)
return (not def.groups.not_in_creative_inventory
or def.groups.not_in_creative_inventory == 0)
and def.description
and def.description ~= ""
end
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--apply filter to the inventory list (create filtered copy of full one)
function ui.apply_filter(player, filter, search_dir)
if not player then
return false
end
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local player_name = player:get_player_name()
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-- Whether to show uncraftable items
local fprefilter = function(_)
return true
end
if ui.hide_uncraftable_items and not ui.is_creative(player_name) then
fprefilter = function(name)
return ui.get_recipe_list(name)
end
end
local registered_items = minetest.registered_items
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local lfilter = string.lower(filter)
local ffilter
if lfilter:sub(1, 6) == "group:" then
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-- Group filter: all groups of the item must match
local groups = lfilter:sub(7):split(",")
ffilter = function(name)
local def = registered_items[name]
for _, group in ipairs(groups) do
if not def.groups[group]
or def.groups[group] <= 0 then
return false
end
end
return true
end
else
-- Name filter: fuzzy match item names and descriptions
local player_info = minetest.get_player_information(player_name)
local lang = player_info and player_info.lang_code or ""
ffilter = function(name)
local def = registered_items[name]
local lname = string.lower(name)
local ldesc = string.lower(def.description)
local llocaldesc = minetest.get_translated_string
and string.lower(minetest.get_translated_string(lang, def.description))
return string.find(lname, lfilter, 1, true) or string.find(ldesc, lfilter, 1, true)
or llocaldesc and string.find(llocaldesc, lfilter, 1, true)
end
end
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local filtered_items = {}
local category = ui.current_category[player_name] or 'all'
if category == 'all' then
for _, name in ipairs(ui.items_list) do
if fprefilter(name) and ffilter(name) then
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table.insert(filtered_items, name)
end
end
elseif category == 'uncategorized' then
for _, name in ipairs(ui.items_list) do
if not ui.find_category(name)
and fprefilter(name)
and ffilter(name) then
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table.insert(filtered_items, name)
end
end
else
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-- Any other category is selected
for name, exists in pairs(ui.registered_category_items[category]) do
if exists
and fprefilter(name)
and ffilter(name) then
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table.insert(filtered_items, name)
end
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end
end
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table.sort(filtered_items)
ui.filtered_items_list_size[player_name] = #filtered_items
ui.filtered_items_list[player_name] = filtered_items
ui.current_index[player_name] = 1
ui.activefilter[player_name] = filter
ui.active_search_direction[player_name] = search_dir
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ui.set_inventory_formspec(player, ui.current_page[player_name])
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end
-- Inform players about potential visual issues
minetest.register_on_joinplayer(function(player)
local player_name = player:get_player_name()
local info = minetest.get_player_information(player_name)
if info and (info.formspec_version or 0) < 4 then
minetest.chat_send_player(player_name, S("Unified Inventory: Your game version is too old"
.. " and does not support the GUI requirements. You might experience visual issues."))
end
end)