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server-nalc/mods/markers/areas.lua

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initial commit subgame + mods
2014-10-28 18:01:32 +01:00
-- TODO: offer teleport button?
-- taken from mobf
local COLOR_RED = "#FF0000";
local COLOR_GREEN = "#00FF00";
local COLOR_WHITE = "#FFFFFF";
-- we need to store which list we present to which player
markers.menu_data_by_player = {}
markers.get_area_by_pos = function(pos)
local found_areas = {};
for id, area in pairs(areas.areas) do
if( pos.x >= area.pos1.x and pos.x <= area.pos2.x and
pos.y >= area.pos1.y and pos.y <= area.pos2.y and
pos.z >= area.pos1.z and pos.z <= area.pos2.z )then
area[ 'id' ] = id;
table.insert(found_areas, area );
end
end
return found_areas;
end
-- mode: can be pos, player, all, subarea, main_areas
-- mode_data: content depends on mode
-- selected: display information about the area the player single-clicked on
markers.get_area_list_formspec = function( player, mode, pos, mode_data, selected )
local id_list = {};
local title = '???';
local tlabel = '';
-- expects a position in mode_data
if( mode=='pos' ) then
-- title would be too long for a label
title = 'All areas which contain position..';
tlabel = '<'..minetest.pos_to_string( mode_data )..'>:';
for id, area in pairs(areas.areas) do
if( mode_data.x >= area.pos1.x and mode_data.x <= area.pos2.x and
mode_data.y >= area.pos1.y and mode_data.y <= area.pos2.y and
mode_data.z >= area.pos1.z and mode_data.z <= area.pos2.z )then
table.insert( id_list, id );
end
end
-- expects a playername in mode_data
elseif( mode=='player' ) then
title = 'All areas owned by player..';
tlabel = '<'..tostring( mode_data )..'>:';
for id, area in pairs(areas.areas) do
if( area.owner == mode_data ) then
table.insert( id_list, id );
end
end
-- expects an area_id in mode_data
elseif( mode=='subareas' ) then
title = 'All subareas of area..';
tlabel = '<'..tostring( areas.areas[ mode_data ].name )..'> ['..tostring( mode_data )..']:';
for id, area in pairs(areas.areas) do
if( area.parent and area.parent == mode_data ) then
table.insert( id_list, id );
end
end
-- show only areas that do not have parents
elseif( mode=='main_areas' ) then
title = 'All main areas:';
tlabel = '*all main areas*';
for id, area in pairs(areas.areas) do
if( not( area.parent )) then
table.insert( id_list, id );
end
end
elseif( mode=='all' ) then
title = 'All areas:';
tlabel = '*all areas*';
for id, area in pairs(areas.areas) do
table.insert( id_list, id );
end
end
local formspec = 'size[10,9]';
title = minetest.formspec_escape( title );
tlabel = minetest.formspec_escape( tlabel );
formspec = formspec..
"label[0.5,0;"..title.."]"..
"label[4.7,0;"..tlabel.."]"..
"label[0.5,8.5;Doubleclick to select area.]"..
"label[4.7,8.5;Areas found: "..tostring( #id_list )..".]"..
"textlist[0.5,0.5;7,8;markers_area_list_selection;";
local liste = '';
for i,v in ipairs( id_list ) do
if( liste ~= '' ) then
liste = liste..',';
end
liste = liste..minetest.formspec_escape( areas:toString( v ) );
end
-- highlight selected entry
if( selected ) then
formspec = formspec..liste..';'..selected..';false]';
else
formspec = formspec..liste..';]';
end
local pname = player:get_player_name();
if( not( markers.menu_data_by_player[ pname ] )) then
markers.menu_data_by_player[ pname ] = {};
end
-- display information about the location of the area the player clicked on
if( selected
and id_list[ selected ]
and areas.areas[ id_list[ selected ]] ) then
local this_area = areas.areas[ id_list[ selected ]];
local subareas = {};
for i,v in pairs( areas.areas ) do
if( v.parent and v.parent == id_list[ selected ]) then
table.insert( subareas, i );
end
end
formspec = formspec..
markers.show_compass_marker( 8.5, 3.0, false, pos, this_area.pos1, this_area.pos2 );
if( this_area.parent) then
formspec = formspec..
'button[8.0,0.5;2,0.5;show_parent;'..
minetest.formspec_escape( areas.areas[ this_area.parent ].name )..']';
end
if( #subareas > 0 ) then
formspec = formspec..
'button[8.0,1.0;2,0.5;list_subareas;'..
minetest.formspec_escape( 'List subareas ('..tostring( #subareas )..')')..']';
end
if( mode=='player' ) then
formspec = formspec..
'label[8.0,1.5;'..
minetest.formspec_escape( this_area.owner..'\'s areas')..']';
else
formspec = formspec..
'button[8.0,1.5;2,0.5;list_player_areas;'..
minetest.formspec_escape( this_area.owner..'\'s areas')..']';
end
end
formspec = formspec..
'button[8.0,8.5;2,0.5;list_main_areas;List all main areas]';
-- we need to remember especially the id_list - else it would be impossible to know what the
-- player selected
markers.menu_data_by_player[ pname ] = {
typ = 'area_list',
mode = mode,
pos = pos,
mode_data = mode_data,
list = id_list,
selected = id_list[ selected ],
};
return formspec;
end
-- shows a formspec with information about a particular area
-- pos is the position of the marker stone or place where the player clicked
-- with the land title register; it is used for relative display of coordinates
markers.get_area_desc_formspec = function( id, player, pos )
if( not( areas.areas ) or not( id ) or not( areas.areas[ id ] )) then
return 'field[info;Error:;Area not found.]';
end
local this_area = areas.areas[ id ];
local pname = player:get_player_name();
-- show some buttons only if area is owned by the player
local is_owner = false;
if( this_area.owner == pname ) then
is_owner = true;
end
local formspec = 'size[10,9]'..
'label[2.5,0.0;Area information and management]'..
'button_exit[4.7,7.0;1,0.5;abort;OK]';
-- general information about the area
formspec = formspec..
'label[0.5,1.0;This is area number ]'..
'label[4.7,1.0;'..tostring( id )..']'..
'label[0.5,1.5;The area is called ]'..
'label[4.7,1.5;'..minetest.formspec_escape( this_area.name or '-not set-')..']'..
'label[0.5,2.0;It is owned by ]'..
'label[4.7,2.0;'..minetest.formspec_escape( this_area.owner)..']';
-- these functions are only available to the owner of the area
if( is_owner ) then
formspec = formspec..
'button_exit[8.0,0.0;2,0.5;change_owner;Change owner]'..
'button_exit[8.0,1.0;2,0.5;delete;Delete]'..
'button_exit[8.0,1.5;2,0.5;rename;Rename]'..
'button_exit[8.0,2.0;2,0.5;list_player_areas;My areas]';
-- subareas of own areas can be deleted (but not renamed)
elseif( not( is_owner )
and this_area.parent
and areas.areas[ this_area.parent ]
and areas.areas[ this_area.parent ].owner == pname ) then
formspec = formspec..
'button_exit[8.0,1.0;2,0.5;delete;Delete subarea]'..
'button_exit[8.0,2.0;2,0.5;list_player_areas;Player\'s areas]';
else
formspec = formspec..
'button_exit[8.0,2.0;2,0.5;list_player_areas;Player\'s areas]';
end
-- players with the areas priv get an extra menu
if( minetest.check_player_privs(pname, {areas=true})) then
formspec = formspec..
'label[8.0,6.0;Admin commands:]'..
'button_exit[8.0,6.5;2,0.5;change_owner;Change owner]'..
'button_exit[8.0,7.0;2,0.5;delete;Delete]'..
'button_exit[8.0,7.5;2,0.5;rename;Rename]';
end
-- show subowners and areas with the same coordinates
formspec = formspec..
'label[0.5,2.5;Further owners of the entire area:]';
local further_owners = {};
for i, area in pairs(areas.areas) do
if( i ~= id and
this_area.pos1.x == area.pos1.x and this_area.pos2.x == area.pos2.x and
this_area.pos1.y == area.pos1.y and this_area.pos2.y == area.pos2.y and
this_area.pos1.z == area.pos1.z and this_area.pos2.z == area.pos2.z )then
table.insert( further_owners, area.owner );
end
end
if( #further_owners > 0 ) then
formspec = formspec..
'label[4.7,2.5;'..minetest.formspec_escape( table.concat( further_owners, ', '))..'.]';
-- deleting subowners is done by deleting their areas
if( is_owner ) then
formspec = formspec..
'button_exit[8.0,2.5;2,0.5;add_owner;Add]';
end
else
formspec = formspec..
'label[4.7,2.5;-none-]';
if( is_owner ) then
formspec = formspec..
'button_exit[8.0,2.5;2,0.5;add_owner;Add]';
end
end
-- is the area a subarea?
if( this_area.parent ) then
formspec = formspec..
'label[0.5,3.0;This area is a sub-area of area]'..
'label[4.7,3.0;'..minetest.formspec_escape( areas.areas[ this_area.parent ].name..' ['..this_area.parent..']' )..']'..
'button_exit[8.0,3.0;2,0.5;show_parent;Show main area]';
end
-- does the area have subareas, i.e. is it a parent area for others?
local sub_areas = {};
for i, area in pairs(areas.areas) do
if( i ~= id and
area.parent == id ) then
table.insert( sub_areas, i );
end
end
if( #sub_areas > 0 ) then
formspec = formspec..
'label[0.5,4.0;Number of defined subareas:]'..
'label[4.7,4.0;'..tostring( #sub_areas )..']'..
'button_exit[8.0,4.0;2,0.5;list_subareas;List subareas]';
else
formspec = formspec..
'label[0.5,4.0;There are no subareas defined.]';
end
-- give information about the size of the area
local length_x = (math.abs( this_area.pos2.x - this_area.pos1.x )+1);
local length_y = (math.abs( this_area.pos2.y - this_area.pos1.y )+1);
local length_z = (math.abs( this_area.pos2.z - this_area.pos1.z )+1);
formspec = formspec..
'label[0.5,4.5;The area extends from]'..
'label[4.7,4.5;'..minetest.pos_to_string( this_area.pos1 )..' to '..minetest.pos_to_string( this_area.pos2 )..'.]'..
'label[4.7,4.75;It spans '..tostring( length_x )..
' x '..tostring( length_z )..
' = '..tostring( length_x * length_z )..
' m^2. Height: '..tostring( length_y )..' m.]';
formspec = formspec..
markers.show_compass_marker( 2.0, 7.0, true, pos, this_area.pos1, this_area.pos2 );
-- TODO: buy / sell button
local pname = player:get_player_name();
if( not( markers.menu_data_by_player[ pname ] )) then
markers.menu_data_by_player[ pname ] = {};
end
-- we need to remember especially the id_list - else it would be impossible to know what the
-- player selected
markers.menu_data_by_player[ pname ] =
{ typ = 'show_area',
mode = nil,
pos = pos,
mode_data = nil,
list = nil,
selected = id,
};
return formspec;
end
-- shows where the area (defined by pos1/pos2) is located relative to the given position pos
-- row_offset/col_offset are offsets for the formspec
markers.show_compass_marker = function( col_offset, row_offset, with_text, pos, pos1, pos2 )
local formspec = '';
-- TODO: show up/down information somehow
-- TODO: what if checked with a land claim register?
-- if possible, show how far the area streches into each direction relative to pos
if( pos.x >= pos1.x and pos.x <= pos2.x
and pos.y >= pos1.y and pos.y <= pos2.y
and pos.z >= pos1.z and pos.z <= pos2.z ) then
if( with_text ) then
formspec = formspec..
'label[0.5,5.5;Dimensions of the area in relation to..]'..
-- TODO: check if there is a marker; else write 'position you clicked on'
'label[4.7,5.5;the marker at '..minetest.pos_to_string( pos )..':]'..
'button_exit[8.0,5.5;2,0.5;list_areas_at;Local areas]';
end
formspec = formspec..
'image['..col_offset..','..row_offset..';1,1;markers_stone.png]'..
'label['..(col_offset-0.8)..','..(row_offset+0.05)..';'..tostring( pos.x - pos1.x )..' m W]'..
'label['..(col_offset+1.0)..','..(row_offset+0.05)..';'..tostring( pos2.x - pos.x )..' m E]'..
'label['..(col_offset+0.1)..','..(row_offset+0.80)..';'..tostring( pos.z - pos1.z )..' m S]'..
'label['..(col_offset+0.1)..','..(row_offset-0.80)..';'..tostring( pos2.z - pos.z )..' m N]';
-- else show how far the area is away
else
local starts_north = '';
local starts_south = '';
local starts_east = '';
local starts_west = '';
if( pos.z > pos2.z ) then
starts_north = '';
starts_south = tostring( pos.z - pos2.z )..' m S';
else
starts_north = tostring( pos1.z - pos.z )..' m N';
starts_south = '';
end
if( pos.x > pos2.x ) then
starts_east = '';
starts_west = tostring( pos.x - pos2.x )..' m W';
else
starts_east = tostring( pos1.x - pos.x )..' m E';
starts_west = '';
end
if( with_text ) then
formspec = formspec..
'label[0.5,5.5;Position of the area in relation to..]'..
-- TODO: check if there is a marker; else write 'position you clicked on'
'label[4.7,5.5;the marker at '..minetest.pos_to_string( pos )..':]'..
'button_exit[8.0,5.5;2,0.5;list_areas_at;Local areas]';
end
formspec = formspec..
'image['..col_offset..','..row_offset..';1,1;compass_side_top.png]'..
'label['..(col_offset-0.8)..','..(row_offset+0.05)..';'..starts_west..']'..
'label['..(col_offset+1.0)..','..(row_offset+0.05)..';'..starts_east..']'..
'label['..(col_offset+0.1)..','..(row_offset-0.80)..';'..starts_north..']'..
'label['..(col_offset+0.1)..','..(row_offset+0.80)..';'..starts_south..']';
end
return formspec;
end
-- formspec input needs to be handled diffrently
markers.form_input_handler_areas = function( player, formname, fields)
local pname = player:get_player_name();
if( formname ~= "markers:info"
or not( player )
or not( markers.menu_data_by_player[ pname ] )) then
return false;
end
local menu_data = markers.menu_data_by_player[ pname ];
local formspec = '';
-- rename an area
if( fields.rename
and menu_data.selected
and areas.areas[ menu_data.selected ]
and areas.areas[ menu_data.selected ].owner == pname ) then
local area = areas.areas[ menu_data.selected ];
if( not( area.name )) then
area.name = '-enter area name-';
end
formspec = 'field[rename_new_name;Enter new name for area:;'..minetest.formspec_escape( area.name )..']';
elseif( fields.rename_new_name
and menu_data.selected
and areas.areas[ menu_data.selected ]
and ((areas.areas[ menu_data.selected ].owner == pname )
or minetest.check_player_privs(pname, {areas=true}))) then
local area = areas.areas[ menu_data.selected ];
-- actually rename the area
areas.areas[ menu_data.selected ].name = fields.rename_new_name;
areas:save();
minetest.chat_send_player( pname, 'Area successfully renamed.');
-- shwo the renamed area
formspec = markers.get_area_desc_formspec( menu_data.selected, player, menu_data.pos );
-- change owner the area
elseif( fields.change_owner
and menu_data.selected
and areas.areas[ menu_data.selected ] ) then
-- there are no checks here - those happen when the area is transferred
local area = areas.areas[ menu_data.selected ];
formspec = 'field[change_owner_name;Give area \"'..minetest.formspec_escape( area.name )..'\" to player:;-enter name of NEW OWNER-]';
elseif( fields.change_owner_name
and menu_data.selected
and areas.areas[ menu_data.selected ] ) then
local area = areas.areas[ menu_data.selected ];
-- only own areas can be transfered to another player (or if the areas priv is there)
if( area.owner ~= pname
and not( minetest.check_player_privs(pname, {areas=true}))) then
minetest.chat_send_player( pname, 'Permission denied. You do not own the area.');
elseif( not( areas:player_exists( fields.change_owner_name ))) then
minetest.chat_send_player( pname, 'That player does not exist.');
else
-- actually change the owner
areas.areas[ menu_data.selected ].owner = fields.change_owner_name;
areas:save()
minetest.chat_send_player( pname, 'Your area '..tostring( area.name )..' has been transfered to '..tostring( fields.change_owner_name )..'.');
minetest.chat_send_player( fields.change_owner_name, pname..'" has given you control over an area.')
end
formspec = markers.get_area_desc_formspec( menu_data.selected, player, menu_data.pos );
-- add an owner to the entire area
elseif( fields.add_owner
and menu_data.selected
and areas.areas[ menu_data.selected ]
and areas.areas[ menu_data.selected ].owner == pname ) then
local area = areas.areas[ menu_data.selected ];
formspec = 'field[add_owner_name;Grant access to area \"'..minetest.formspec_escape( area.name )..'\" to player:;-enter player name-]';
elseif( fields.add_owner_name
-- the player has to own the area already; we need a diffrent name here
and fields.add_owner_name ~= pname
and menu_data.selected
and areas.areas[ menu_data.selected ]
and areas.areas[ menu_data.selected ].owner == pname ) then
local area = areas.areas[ menu_data.selected ];
-- does the player exist?
if( not( areas:player_exists( fields.add_owner_name ))) then
minetest.chat_send_player( pname, 'That player does not exist.');
-- show the formspec
formspec = markers.get_area_desc_formspec( menu_data.selected, player, menu_data.pos );
else
-- log the creation of the new area
minetest.log("action", pname.." runs /add_owner through the markers-mod. Owner = "..fields.add_owner_name..
" AreaName = "..area.name.." ParentID = "..menu_data.selected..
" StartPos = "..area.pos1.x..","..area.pos1.y..","..area.pos1.z..
" EndPos = " ..area.pos2.x..","..area.pos2.y..","..area.pos2.z)
-- take the name from the old/parent area
local new_id = areas:add( fields.add_owner_name, area.name, area.pos1, area.pos2, menu_data.selected );
areas:save()
minetest.chat_send_player( fields.add_owner_name,
"You have been granted control over area #"..
new_id..". Type /list_areas to show your areas.")
minetest.chat_send_player( pname, 'The player may now build and dig in your area.');
-- shwo the new area
markers.menu_data_by_player[ pname ].selected = new_id;
formspec = markers.get_area_desc_formspec( new_id, player, menu_data.pos );
end
-- delete area
elseif( fields.delete
and menu_data.selected
and areas.areas[ menu_data.selected ] ) then
local area = areas.areas[ menu_data.selected ];
-- a player can only delete own areas or subareas of own areas
if( area.owner ~= pname
and not( area.parent
and areas.areas[ area.parent ]
and areas.areas[ area.parent ].owner
and areas.areas[ area.parent ].owner == pname )
and not( minetest.check_player_privs(pname, {areas=true}))) then
minetest.chat_send_player( pname, 'Permission denied. You own neither the area itshelf nor its parent area.');
-- shwo the area where the renaming failed
formspec = markers.get_area_desc_formspec( menu_data.selected, player, menu_data.pos );
else
formspec = 'field[rename_new_name;Enter new name for area:;'..minetest.formspec_escape( area.name )..']';
formspec = 'field[delete_confirm;'..minetest.formspec_escape( 'Really delete area \"'..area.name..
'\" (owned by '..area.owner..')? Confirm with YES:')..';-type yes in capitals to confirm-]';
end
elseif( fields.delete_confirm
and menu_data.selected
and areas.areas[ menu_data.selected ] ) then
local area = areas.areas[ menu_data.selected ];
local old_owner = area.owner;
local subareas = {};
for i,v in pairs( areas.areas ) do
if( v.parent and v.parent == menu_data.selected ) then
table.insert( subareas, i );
end
end
-- a player can only delete own areas or subareas of own areas
if( area.owner ~= pname
and not( area.parent
and areas.areas[ area.parent ]
and areas.areas[ area.parent ].owner
and areas.areas[ area.parent ].owner == pname )
and not( minetest.check_player_privs(pname, {areas=true}))) then
minetest.chat_send_player( pname, 'Permission denied. You own neither the area itshelf nor its parent area.');
-- shwo the renamed area
formspec = markers.get_area_desc_formspec( menu_data.selected, player, menu_data.pos );
-- avoid accidents
elseif( fields.delete_confirm ~= 'YES' ) then
minetest.chat_send_player( pname, 'Delition of area \"'..tostring( area.name )..'\" (owned by '..old_owner..') aborted.');
formspec = markers.get_area_desc_formspec( menu_data.selected, player, menu_data.pos );
-- only areas without subareas can be deleted
elseif( #subareas > 0 ) then
minetest.chat_send_player( pname, 'The area has '..tostring( #subareas )..' subarea(s). Please delete those first!');
formspec = markers.get_area_desc_formspec( menu_data.selected, player, menu_data.pos );
else
minetest.chat_send_player( pname, 'Area \"'..tostring( area.name )..'\" (owned by '..old_owner..') deleted.');
-- really delete
areas:remove( menu_data.selected, false ); -- no recursive delete
areas:save();
-- show the list of areas owned by the previous owner
formspec = markers.get_area_list_formspec( player, 'player', menu_data.pos, old_owner, nil );
end
elseif( fields.show_parent
and menu_data.selected
and areas.areas[ menu_data.selected ]
and areas.areas[ menu_data.selected ].parent ) then
formspec = markers.get_area_desc_formspec( areas.areas[ menu_data.selected ].parent, player, menu_data.pos );
elseif( fields.list_player_areas
and menu_data.selected
and areas.areas[ menu_data.selected ] ) then
formspec = markers.get_area_list_formspec( player, 'player', menu_data.pos, areas.areas[ menu_data.selected ].owner, nil );
elseif( fields.list_subareas
and menu_data.selected
and areas.areas[ menu_data.selected ] ) then
formspec = markers.get_area_list_formspec( player, 'subareas', menu_data.pos, menu_data.selected, nil );
elseif( fields.list_main_areas ) then
formspec = markers.get_area_list_formspec( player, 'main_areas', menu_data.pos, nil, nil );
elseif( fields.list_areas_at
and menu_data.pos ) then
formspec = markers.get_area_list_formspec( player, 'pos', menu_data.pos, menu_data.pos, nil );
elseif( fields.markers_area_list_selection
and menu_data.typ
and menu_data.typ == 'area_list'
and menu_data.list
and #menu_data.list > 0 ) then
local field_data = fields.markers_area_list_selection:split( ':' );
if( not( field_data ) or #field_data < 2 ) then
field_data = { '', '' };
end
local selected = tonumber( field_data[ 2 ] );
if( field_data[1]=='DCL' ) then
-- on doubleclick, show detailed area information
formspec = markers.get_area_desc_formspec( tonumber( menu_data.list[ selected ] ), player, menu_data.pos );
else
-- on single click, just show the position of that particular area
formspec = markers.get_area_list_formspec( player, menu_data.mode, menu_data.pos, menu_data.mode_data, selected );
end
else
return false;
end
minetest.show_formspec( pname, "markers:info", formspec )
return true;
end
-- search the area at the given position pos that might be of most intrest to the player
markers.show_marker_stone_formspec = function( player, pos )
local pname = player:get_player_name();
-- this table stores the list the player may have selected from; at the beginning, there is no list
if( not( markers.menu_data_by_player[ pname ] )) then
markers.menu_data_by_player[ pname ] = {
typ = 'area_list',
mode = 'main_areas',
pos = pos,
mode_data = pos,
list = {},
selected = nil,
};
end
local formspec = '';
local found_areas = {};
local min_area_size = 100000000000;
for id, area in pairs(areas.areas) do
if( pos.x >= area.pos1.x and pos.x <= area.pos2.x and
pos.y >= area.pos1.y and pos.y <= area.pos2.y and
pos.z >= area.pos1.z and pos.z <= area.pos2.z )then
-- ignore y (height) value because some areas may go from bottom to top
local area_size = math.abs( area.pos2.x - area.pos1.x )
* math.abs( area.pos2.z - area.pos1.z );
-- collect subareas that have the same size
if( area_size == min_area_size ) then
table.insert(found_areas, id );
-- we have found a smaller area - that is more intresting here
elseif( area_size <= min_area_size ) then
found_areas = {};
min_area_size = area_size;
table.insert(found_areas, id );
end
end
end
-- no areas found; display error message and selection menu
if( #found_areas < 1 ) then
formspec = 'size[4,3]'..
'label[0.5,0.5;This position is not protected.]'..
'button[1.0,1.5;2,0.5;list_main_areas;List all main areas]'..
'button_exit[3.0,1.5;1,0.5;abort;OK]';
-- found exactly one areaa - display it
elseif( #found_areas == 1 ) then
formspec = markers.get_area_desc_formspec( found_areas[ 1 ], player, pos );
-- found more than one area; we have saved only those with the smallest size
else
local own_area = 0;
local parent_area = 0;
local upper_area = 0;
for i,v in ipairs( found_areas ) do
local area = areas.areas[ v ];
-- owned by player?
if( area.owner == pname ) then
own_area = v;
-- parentless area?
elseif( not( area.parent )) then
parent_area = v;
-- the parent has diffrent coordinates?
elseif( areas.areas[ area.parent ].pos1.x ~= area.pos1.x
or areas.areas[ area.parent ].pos1.y ~= area.pos1.y
or areas.areas[ area.parent ].pos1.z ~= area.pos1.z
or areas.areas[ area.parent ].pos2.x ~= area.pos2.x
or areas.areas[ area.parent ].pos2.y ~= area.pos2.y
or areas.areas[ area.parent ].pos2.z ~= area.pos2.z ) then
upper_area = v;
end
end
-- the area owned by the player is most intresting
if( own_area > 0 ) then
formspec = markers.get_area_desc_formspec( own_area, player, pos );
-- if the player owns none of these areas, show the topmost (parentless) area
elseif( parent_area > 0 ) then
formspec = markers.get_area_desc_formspec( parent_area, player, pos );
-- an area which has a parent with diffrent coordinates from its child may (or may not) be the
-- parent of all these subareas we've found here; there is no guarantee, but it's a best guess.
-- If it is not good enough, then the player can still search for himshelf.
elseif( upper_area > 0 ) then
formspec = markers.get_area_desc_formspec( upper_area, player, pos );
-- our superficial analysis of the structure of the areas failed; it is up to the player to
-- find out which of the candidates he is intrested in; we list them all
else
formspec = markers.get_area_list_formspec( player, 'pos', pos, pos, nil );
end
end
minetest.show_formspec( player:get_player_name(), "markers:info", formspec );
end
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