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Sokomine 2012-10-21 20:00:34 +02:00
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README.md Normal file
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This is work in progress.
Aim: Create objects that can be locked and shared.
Comes with a chest and sign. Ought to work with xdoors2locked.
Who can open/use a locked object?
- the owner (always)
- anyone with the diglocks priv
- anyone with the openlocks priv (only use - not dig)
- anyone whose name has been added by the owner with the /add playername command
- anyone who knows and types in the password that the owner did set with /set thisisthepassword
TODO:
- check if players added via /add playername actually exist
- add groups of players for easier handling (i.e. a group :trusted for trusted users)
- add key and keychain as objects required to use locked objects
- add crafting receipes
- better handling of the name of the object

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locks = {};
minetest.register_privilege("openlocks", { description = "allows to open/use all locked objects", give_to_singleplayer = false});
minetest.register_privilege("diglocks", { description = "allows to open/use and dig up all locked objects", give_to_singleplayer = false});
-- initializes a lock (that is: prepare the metadata so that it can store data)
-- default_formspec is the formspec that will be used on right click; the input field for the commands will be added
-- Call this in on_construct in register_node. Excample:
-- on_construct = function(pos)
-- locks:lock_init( pos, "" );
-- end;
function locks:lock_init( pos, default_formspec )
if( pos == nil ) then
print( "Error: [locks] lock_init: pos is nil");
return;
end
local meta = minetest.env:get_meta(pos);
if( meta == nil ) then
print( "Error: [locks] lock_init: unable to get meta data");
return;
end
-- this will be changed after the node is placed
meta:set_string("infotext", "Locked object");
-- prepare the field for the owner
meta:set_string("owner", "");
-- this is the list of players/groups that may unlock the lock even if they are not the owner
meta:set_string("allowed_users","");
-- objects can be unlocked by passwords as well (if it is set)
meta:set_string("password","");
-- the last player who entered the right password (to save space this is not a list)
meta:set_string("pw_user","");
-- this formspec is presented on right-click when the user has access
meta:set_string("default_formspec",default_formspec);
-- just to be sure...
meta:set_string("formspec", default_formspec);
end
-- Set the owner of the locked object.
-- Call this in after_place_node in register_node. Example:
-- after_place_node = function(pos, placer)
-- locks:lock_set_owner( pos, placer );
-- end,
function locks:lock_set_owner( pos, player_or_name )
if( pos == nil or player_or_name == nil ) then
print( "Error: [locks] Missing/wrong parameters to lock_set_owner");
return false;
end
local meta = minetest.env:get_meta(pos);
if( meta == nil ) then
print( "Error: [locks] lock_set_owner: unable to get meta data");
return;
end
-- accepts a name or a player object
if( type( player_or_name )~="string") then
player_or_name = player_or_name:get_player_name();
end
meta:set_string("owner", player_or_name or "");
-- TODO: not very convincing...has to carry the name of the object
meta:set_string("infotext", "Locked object (owned by "..meta:get_string("owner")..")");
end
-- The locked object can only be digged by the owner OR by people with the diglocks priv
-- Call this in can_dig in register_node. Example:
-- can_dig = function(pos,player)
-- return locks:lock_allow_dig( pos, player );
-- end
function locks:lock_allow_dig( pos, player )
if( pos == nil or player == nil ) then
print( "Error: [locks] Missing/wrong parameters to lock_allow_dig");
return false;
end
local meta = minetest.env:get_meta(pos);
local lock_owner = meta:get_string("owner");
-- locks who lost their owner can be opened/digged by anyone
if( meta == nil or lock_owner == nil or lock_owner == "") then
return true;
end
-- the owner can dig up his own locked objects
if( player:get_player_name() == meta:get_string("owner")) then
return true;
end
-- players with diglocks priv can dig up locked objects as well
if( minetest.check_player_privs(player:get_player_name(), {diglocks=true})) then
return true;
end
return false; -- fallback
end
-- The locked object can only be used (i.e. opened, stuff taken out, changed, ... - depends on object) if this
-- function returns true. Call it wherever appropriate (usually in on_punch in register_node). Example:
-- on_punch = function(pos,player)
-- if( !locks:lock_allow_use( pos, player ) then
-- print( "Sorry, you have no access here.");
-- else
-- do_what_this_object_is_good_for( pos, puncher );
-- end
-- end
function locks:lock_allow_use( pos, player )
if( pos == nil or player == nil ) then
print( "Error: [locks] Missing/wrong parameters to lock_allow_use");
return false;
end
-- TODO: the player has to have a key (when allowed to dig) or else a keychain for this to be actually allowed
-- if the user would even be allowed to dig this node up, using the node is allowed as well
if( locks:lock_allow_dig( pos, player )) then
return true;
end
local name = player:get_player_name();
-- players with openlocks priv can open locked objects
if( minetest.check_player_privs(name, {openlocks=true})) then
return true;
end
-- the player might be specificly allowed to use this object through allowed_users
local liste = meta:get_string("allowed_users"):split( "," );
for i in ipairs( liste ) do
if( liste[i] == name ) then
return true;
end
end
-- TODO: the player might be in a group of players allowed to use this (also listed in allowed_users)
-- the player may have entered the right password
if( name == meta:get_string("pw_user")) then
return true;
end
-- the lock may have a password set. If this is the case then ask the user for it
if( meta:get_string( "password" ) and meta:get_sring( "password" ) ~= "" ) then
minetest.chat_send_player(name, "Access denied. Right-click and enter password first!");
return false;
end
return false; -- fallback
end
-- Method for the lock to get password and configuration data
-- Call in on_receive_fields in register_node. Example:
-- on_receive_fields = function(pos, formname, fields, sender)
-- locks:lock_handle_input( pos, formname, fields, sender );
-- end,
function locks:lock_handle_input( pos, formname, fields, player )
if( pos == nil or player == nil ) then
print( "Error: [locks] Missing/wrong parameters to lock_handle_input");
return false;
end
local meta = minetest.env:get_meta(pos);
if( meta == nil ) then
print( "Error: [locks] lock_handle_input: unable to get meta data");
return;
end
-- is this input the lock is supposed to handle?
if( not( fields.locks_sent_input )
or not( fields.locks_sent_lock_command )
or fields.locks_sent_lock_command == "" ) then
return;
end
name = player:get_player_name();
if( fields.locks_sent_lock_command == "/help" ) then
if( name == meta:get_string( "owner" )) then
minetest.chat_send_player(name, "The following commands are available to you, the owner of this object, only:\n"..
" /help Shows this help text.\n"..
" /add <name> Player <name> can now unlock this object with any key.\n"..
" /del <name> Player <name> can no longer use this object.\n"..
" /list Shows a list of players who can use this object.\n"..
" /set <password> Sets a password. Everyone who types that in can use the object.");
else if( locks:lock_allow_use( pos, player )) then
minetest.chat_send_player(name, "This locked object is owned by "..tostring( meta:get_string( "owner" ))..".\n"..
"You do have access to it.\n");
else if( meta:get_string( "password" ) ~= "" ) then
minetest.chat_send_player(name, "This locked object is owned by "..tostring( meta:get_string( "owner" ))..".\n"..
"Enter the correct password to gain access.\n");
else
minetest.chat_send_player(name, "This locked object is owned by "..tostring( meta:get_string( "owner" ))..".\n"..
"There is no password set. You can only gain access if the owner grants it to you.");
end end end -- lua is not the most intuitive language here....
return;
end -- of /help
-- other players can only try to input the correct password
if( name ~= meta:get_string( "owner" )) then
-- no need to bother with trying other PWs if none is set...
if( meta.get_string("password")=="" ) then
minetest.chat_send_player(name, "There is no password set. Access denied.");
return;
end
-- the player may have entered the right password already
if( name == meta:get_string("pw_user")) then
-- nothing to do - the player entered the right pw alredy
minetest.chat_send_player(name, "You have entered the right password already. Access granted.");
return;
end
if( fields.locks_sent_lock_command ~= meta:get_string("password")) then
minetest.chat_send_player(name, "Wrong password. Access denied.");
return;
end
-- store the last user (this one) who entered the right pw
meta:set_string( "pw_user", name );
minetest.chat_send_player(name, "Password confirmed. Access granted.");
return;
end
local txt = "";
if( fields.locks_sent_lock_command == "/list" ) then
if( meta:get_string("allowed_users")=="" ) then
txt = "No other users are allowed to use this object (except those with global privs like moderators/admins).";
else
txt = "You granted the following users/groups of users access to this object:\n";
local liste = meta:get_string("allowed_users"):split( "," );
for i in ipairs( liste ) do
txt = txt.." "..tostring(liste[i]);
end
end
if( meta:get_string( "password" ) == "" ) then
txt = txt.."\nThere is no password set. That means no one can get access through a password.";
else
txt = txt.."\nThe password for this lock is: \""..tostring( meta:get_string( "password" ).."\"");
end
minetest.chat_send_player(name, txt );
return;
end -- of /list
-- -- all other commands take exactly one parameter
local help = fields.locks_sent_lock_command:split( " " );
print( tostring( help[1] ));
print( tostring( help[2] ));
-- set/change a password
if( help[1]=="/set" ) then
-- if empty password then delete it
if( help[2]==nil ) then
help[2] = "";
end
minetest.chat_send_player(name, "Old password: \""..tostring( meta:get_string( "password" ))..
"\"\n Changed to new password: \""..tostring( help[2]).."\".");
meta:set_string( "password", help[2]);
-- reset the list of users who typed the right password
meta:set_string("pw_users","");
if( help[2]=="") then
minetest.chat_send_player(name, "The password is empty and thus will be disabled.");
end
return;
end
if( help[2]==nil or help[2]=="") then
minetest.chat_send_player(name, "Error: Missing parameter (player name) for command \""..tostring( help[1] ).."\"." );
return;
end
-- for add and del: check if the player is already in the list
local found = false;
local anz = 0;
local liste = meta:get_string("allowed_users"):split( "," );
for i in ipairs( liste ) do
anz = anz + 1; -- count players
if( tostring( liste[i] ) == help[2] ) then
found = true;
end
end
if( help[1]=="/add" and found==true ) then
minetest.chat_send_player(name, "Player \""..tostring( help[2] ).."\" is already allowed to use this locked object. Nothing to do.");
return;
end
if( help[1]=="/del" and found==false) then
minetest.chat_send_player(name, "Player \""..tostring( help[2] ).."\" is not amongst the players allowed to use this locked object. Nothing to do.");
return;
end
-- TODO: check if the player exists....
if( help[1]=="/add" ) then
if( anz >= 6 ) then
minetest.chat_send_player(name, "Sorry, no more players can be added. To save space, only up to 6 players can be added. For more players please use groups!");
return;
end
meta:set_string( "allowed_users", meta:get_string("allowed_users")..","..help[2] );
minetest.chat_send_player(name, help[2].." may now use/access this locked object.");
return;
end
if( help[1]=="/del" ) then
userlist = meta:get_string("allowed_users"):split( ","..help[2] );
if( userlist[2]==nil ) then
userlist[2]="";
end
meta:set_string( "allowed_users", userlist[1]..userlist[2] );
minetest.chat_send_player(name, "Access for player \""..tostring(help[2]).."\" has been revoked.");
return;
end
minetest.chat_send_player(name, "Error: Command \""..tostring(help[1]).."\" not understood.");
end
-- a chest
minetest.register_node("locks:locked_shared_chest", {
description = "Locked shared chest",
tiles = {"default_chest_top.png", "default_chest_top.png", "default_chest_side.png",
"default_chest_side.png", "default_chest_side.png", "default_chest_front.png"},
paramtype2 = "facedir",
groups = {snappy=2,choppy=2,oddly_breakable_by_hand=2},
legacy_facedir_simple = true,
on_construct = function(pos)
local meta = minetest.env:get_meta(pos)
-- prepare the lock of the chest
locks:lock_init( pos,
"size[8,10]"..
-- "field[0.5,0.2;8,1.0;locks_sent_lock_command;Locked chest. Type password, command or /help for help:;]"..
-- "button_exit[3,0.8;2,1.0;locks_sent_input;Proceed]"..
"list[current_name;main;0,0;8,4;]"..
"list[current_player;main;0,5;8,4;]"..
"field[0.3,9.6;6,0.7;locks_sent_lock_command;Locked chest. Type /help for help:;]"..
"button_exit[6.3,9.2;1.7,0.7;locks_sent_input;Proceed]" );
-- "size[8,9]"..
-- "list[current_name;main;0,0;8,4;]"..
-- "list[current_player;main;0,5;8,4;]");
local inv = meta:get_inventory()
inv:set_size("main", 8*4)
end,
after_place_node = function(pos, placer)
locks:lock_set_owner( pos, placer );
end,
can_dig = function(pos,player)
if( not(locks:lock_allow_dig( pos, player ))) then
return false;
end
local meta = minetest.env:get_meta(pos);
local inv = meta:get_inventory()
return inv:is_empty("main")
end,
on_receive_fields = function(pos, formname, fields, sender)
locks:lock_handle_input( pos, formname, fields, sender );
end,
allow_metadata_inventory_move = function(pos, from_list, from_index, to_list, to_index, count, player)
if( not( locks:lock_allow_use( pos, player ))) then
return 0;
end
return count;
end,
allow_metadata_inventory_put = function(pos, listname, index, stack, player)
if( not( locks:lock_allow_use( pos, player ))) then
return 0;
end
return stack:get_count()
end,
allow_metadata_inventory_take = function(pos, listname, index, stack, player)
if( not( locks:lock_allow_use( pos, player ))) then
return 0;
end
return stack:get_count()
end,
on_metadata_inventory_move = function(pos, from_list, from_index, to_list, to_index, count, player)
minetest.log("action", player:get_player_name()..
" moves stuff in locked shared chest at "..minetest.pos_to_string(pos))
end,
on_metadata_inventory_put = function(pos, listname, index, stack, player)
minetest.log("action", player:get_player_name()..
" moves stuff to locked shared chest at "..minetest.pos_to_string(pos))
end,
on_metadata_inventory_take = function(pos, listname, index, stack, player)
minetest.log("action", player:get_player_name()..
" takes stuff from locked shared chest at "..minetest.pos_to_string(pos))
end,
})
-- a sign
minetest.register_node("locks:locked_shared_sign_wall", {
description = "Locked shared sign",
drawtype = "signlike",
tiles = {"default_sign_wall.png"},
inventory_image = "default_sign_wall.png",
wield_image = "default_sign_wall.png",
paramtype = "light",
paramtype2 = "wallmounted",
sunlight_propagates = true,
walkable = false,
selection_box = {
type = "wallmounted",
--wall_top = <default>
--wall_bottom = <default>
--wall_side = <default>
},
groups = {choppy=2,dig_immediate=2},
legacy_wallmounted = true,
on_construct = function(pos)
local meta = minetest.env:get_meta(pos)
-- prepare the lock of the sign
locks:lock_init( pos,
"size[8,4]"..
"field[0.3,0.6;6,0.7;text;Text:;]"..
"field[0.3,3.6;6,0.7;locks_sent_lock_command;Locked sign. Type /help for help:;]"..
"button_exit[6.3,3.2;1.7,0.7;locks_sent_input;Proceed]" );
end,
after_place_node = function(pos, placer)
locks:lock_set_owner( pos, placer );
end,
can_dig = function(pos,player)
return locks:lock_allow_dig( pos, player );
end,
on_receive_fields = function(pos, formname, fields, sender)
-- if the user already has the right to use this and did input text
if( fields.text and locks:lock_allow_use( pos, sender )) then
--print("Sign at "..minetest.pos_to_string(pos).." got "..dump(fields))
local meta = minetest.env:get_meta(pos)
fields.text = fields.text or "";
print((sender:get_player_name() or "").." wrote \""..fields.text..
"\" to sign at "..minetest.pos_to_string(pos));
meta:set_string("text", fields.text.." ["..sender:get_player_name().."]");
meta:set_string("infotext", '"'..fields.text..'"'.." ["..sender:get_player_name().."]");
-- a command for the lock?
else
locks:lock_handle_input( pos, formname, fields, sender );
end
end,
});