Mirrorlandia_minetest/display_modpack
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Code simplification and securisation

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This commit is contained in:
Pierre-Yves Rollo 2018-11-18 15:29:59 +01:00
parent 4a57d08f2b
commit 81fa9f60cf
1 changed files with 69 additions and 86 deletions
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155
fontform.lua
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@ -19,67 +19,37 @@
local modname = minetest.get_current_modname()
-- Context management functions (surely many improvements to do)
local contexts = {}
local function get_player_name(player)
if type(player) == 'string' then return player end
if type(player) == 'userdata' and player.get_player_name then
return player:get_player_name()
end
minetest.log('warning', '['..modname..'] get_player_name could not identify player.')
end
minetest.register_on_leaveplayer(function(player)
local playername = get_player_name(player)
if playername then contexts[playername] = nil end
if minetest.is_player(player) then
contexts[player:get_player_name()] = nil
end
end)
local function new_context(player, context)
local playername = get_player_name(player)
if playername then
contexts[playername] = context
contexts[playername].playername = playername
return contexts[playername]
end
end
local function get_context(player)
local playername = get_player_name(player)
if playername then
if contexts[playername] then
return contexts[playername]
else
minetest.log('warning', '['..modname..'] Context not found for player "'..playername..'"')
end
end
end
local function update_context(player, changes)
local playername = get_player_name(player)
if playername then
if not contexts[playername] then
contexts[playername] = { playername = playername }
end
for key, value in pairs(changes) do
contexts[playername][key] = value
end
local function get_context(playername)
if not contexts[playername] then
contexts[playername] = { playername = playername }
end
return contexts[playername]
end
-- Show node formspec functions
local function show_node_formspec(player, pos)
local function show_node_formspec(playername, pos)
local meta = minetest.get_meta(pos)
local playername = get_player_name(player)
-- Decontextualize formspec
local fs = meta:get_string('formspec')
if not fs then
return
end
-- Change context and currrent_name references to nodemeta references
fs = fs:gsub("current_name", "nodemeta:"..pos.x..","..pos.y..","..pos.z)
fs = fs:gsub("context", "nodemeta:"..pos.x..","..pos.y..","..pos.z)
-- Change context and currrent_name references to nodemeta references
local nodemeta = string.format("nodemeta:%i,%i,%i", pos.x, pos.y ,pos.z)
fs = fs:gsub("current_name", nodemeta)
fs = fs:gsub("context", nodemeta)
-- Change all ${} to their corresponding metadata values
local s, e
@ -92,44 +62,44 @@ local function show_node_formspec(player, pos)
end
until s == nil
local context = get_context(playername)
context.node_pos = pos
-- Find node on_receive_fields
local ndef = minetest.registered_nodes[minetest.get_node(pos).name]
if ndef and ndef.on_receive_fields then
update_context(player, { on_receive_fields = ndef.on_receive_fields } )
context.on_receive_fields = ndef.on_receive_fields
end
update_context(player, { node_pos = pos } )
-- Show formspec
minetest.show_formspec(playername, modname..':context_formspec', fs)
end
minetest.register_on_player_receive_fields(function(player, formname, fields)
if formname == modname..':context_formspec' then
local context = get_context(player)
if context == nil then return end
if context.on_receive_fields then
context.on_receive_fields(context.pos, '', fields, player)
end
if formname ~= modname..':context_formspec' then
return
end
if not minetest.is_player(player) then
return true
end
local context = get_context(player:get_player_name())
if context.on_receive_fields then
context.on_receive_fields(context.pos, '', fields, player)
end
return true
end)
-- Specific functions
local function font_list_prepare()
local list = {}
local function show_font_formspec(playername)
local context = get_context(playername)
local fonts = {}
for name, _ in pairs(font_api.registered_fonts) do
list[#list+1] = name
fonts[#fonts+1] = name
end
table.sort(list)
return list
end
local function show_fs(player)
local context = get_context(player)
if context == nil then return end
local fonts = font_list_prepare()
table.sort(fonts)
local fs = 'size[4,'..(#fonts + 0.8)..']'
..default.gui_bg..default.gui_bg_img..default.gui_slots
@ -146,26 +116,39 @@ local function show_fs(player)
end
minetest.register_on_player_receive_fields(function(player, formname, fields)
if formname == modname..':font_list' then
local context = get_context(player)
if context == nil then return end
if fields.quit == 'true' then
for name, _ in pairs(font_api.registered_fonts) do
if fields['font_'..name] then
local meta = minetest.get_meta(context.pos)
meta:set_string("font", name)
display_api.update_entities(context.pos)
end
end
-- Using after to avoid the "double close" bug
minetest.after(0, show_node_formspec, player, context.pos)
end
if formname ~= modname..':font_list' then
return
end
if not minetest.is_player(player) then
return true
end
local playername = player:get_player_name()
local context = get_context(playername)
if minetest.is_protected(context.pos, playername) then
return true
end
if fields.quit == 'true' then
for name, _ in pairs(font_api.registered_fonts) do
if fields['font_'..name] then
local meta = minetest.get_meta(context.pos)
meta:set_string("font", name)
display_api.update_entities(context.pos)
end
end
-- Using after to avoid the "double close" bug
minetest.after(0, show_node_formspec, playername, context.pos)
end
return true
end)
function font_api.show_font_list(player, pos)
new_context(player, { pos = pos })
show_fs(player)
function font_api.show_font_list_from_pos(player, pos)
if minetest.is_player(player) then
local context = get_context(player:get_player_name())
context.pos = pos
show_font_formspec(player:get_player_name())
end
end