Initial commit

.gitattributes

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+# Auto detect text files and perform LF normalization
+* text=auto

.gitignore

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+# Compiled Lua sources
+luac.out
+
+# luarocks build files
+*.src.rock
+*.zip
+*.tar.gz
+
+# Object files
+*.o
+*.os
+*.ko
+*.obj
+*.elf
+
+# Precompiled Headers
+*.gch
+*.pch
+
+# Libraries
+*.lib
+*.a
+*.la
+*.lo
+*.def
+*.exp
+
+# Shared objects (inc. Windows DLLs)
+*.dll
+*.so
+*.so.*
+*.dylib
+
+# Executables
+*.exe
+*.out
+*.app
+*.i*86
+*.x86_64
+*.hex
+

LICENSE

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+MIT License
+
+Copyright (c) 2020 FaceDeer
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

init.lua

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+-- TODO:
+-- local bulletin boards? May not care about this
+-- forward/back buttons to page through the bulletins on a board
+-- "Bulletin X/Y" indicator on bulletin page
+-- Charge a sheet of paper to post
+-- Timeout/teardown option for old posts. Also allow renewal of posts (costs paper)
+-- Admin override to tear down and edit bulletins
+-- Protection?
+
+local S = minetest.get_translator(minetest.get_current_modname())
+
+local bulletin_boards = {}
+bulletin_boards.player_state = {}
+
+local path = minetest.get_worldpath() .. "/bulletin_boards.lua"
+local f, e = loadfile(path);
+if f then
+	bulletin_boards.global_boards = f()
+else
+	bulletin_boards.global_boards = {}
+end
+
+local function save_boards()
+	file, e = io.open(path, "w");
+	if not file then
+		return error(e);
+	end
+	file:write(minetest.serialize(bulletin_boards.global_boards))
+	file:close()
+end
+
+local max_text_size = 5000 -- half a book
+local max_title_size = 80
+local short_title_size = 12
+
+local function get_board(name)
+	local board = bulletin_boards.global_boards[name]
+	if board then
+		return board
+	end
+	board = {}
+	bulletin_boards.global_boards[name] = board
+	return board
+end
+
+local function show_board(player_name, board_name)
+	local formspec = {}
+	local board = get_board(board_name)
+	local current_time = minetest.get_gametime()
+	
+	formspec[#formspec+1] = "size[8,8]"
+	.. "container[0,0]"
+	local i = 0
+	for y = 0, 6 do
+		for x = 0, 7 do
+			i = i + 1
+			local bulletin = board[i] or {}
+			local short_title = bulletin.title or ""
+			--Don't bother triming the title if the trailing dots would make it longer
+			if #short_title > short_title_size + 3 then
+				short_title = short_title:sub(1, short_title_size) .. "..."
+			end
+			local img = bulletin.icon or ""
+	
+			formspec[#formspec+1] =
+				"image_button["..x..",".. y*1.2 ..";1,1;"..img..";button_"..i..";]"
+				.."label["..x..","..y*1.2-0.35 ..";"..minetest.formspec_escape(short_title).."]"
+			if bulletin.title and bulletin.owner and bulletin.timestamp then
+				local days_ago = math.floor((current_time-bulletin.timestamp)/86400)
+				formspec[#formspec+1] = "tooltip[button_"..i..";"
+					..S("@1\nPosted by @2\n@3 days ago", minetest.formspec_escape(bulletin.title), bulletin.owner, days_ago).."]"
+			end
+		end
+	end
+	formspec[#formspec+1] = "container_end[]"
+
+	bulletin_boards.player_state[player_name] = {board=board_name}
+	minetest.show_formspec(player_name, "bulletin_boards:board", table.concat(formspec))
+end
+
+local icons = {
+	"bulletin_boards_document_comment_above.png",
+	"bulletin_boards_document_back.png",
+	"bulletin_boards_document_next.png",
+	"bulletin_boards_document_image.png",
+	"bulletin_boards_document_notes.png",
+	"bulletin_boards_document_quote.png",
+	"bulletin_boards_document_signature.png",
+	"bulletin_boards_to_do_list.png",
+	"bulletin_boards_documents_email.png",
+	"bulletin_boards_receipt_invoice.png",
+}
+
+
+local function show_bulletin(player, board_name, index)
+	local board = get_board(board_name)
+	local bulletin = board[index] or {}
+	local player_name = player:get_player_name()
+	bulletin_boards.player_state[player_name] = {board=board_name, index=index}
+	
+	local formspec
+	local esc = minetest.formspec_escape
+	if bulletin.owner == nil or bulletin.owner == player_name then
+		formspec = {"size[8,8]"
+			.."field[0.5,0.75;7.5,0;title;"..S("Title:")..";"..esc(bulletin.title or "").."]"
+			.."textarea[0.5,1.15;7.5,7;text;"..S("Contents:")..";"..esc(bulletin.text or "").."]"
+			.."label[-0.2,7.25;"..S("Post:").."]"}
+		for i, icon in ipairs(icons) do
+			formspec[#formspec+1] = "image_button[".. i*0.75-0.5 ..",7.25;1,1;"..icon..";save_"..i..";]"
+		end
+		formspec = table.concat(formspec)
+	else
+		formspec = "size[8,8]"
+			.."label[0.5,0.5;"..S("by @1", bulletin.owner).."]"
+			.."tablecolumns[color;text]"
+			.."tableoptions[background=#00000000;highlight=#00000000;border=false]"
+			.."table[0.4,0;7,0.5;title;#FFFF00,"..esc(bulletin.title or "").."]"
+			.."textarea[0.5,1.5;7.5,7;;"..esc(bulletin.text or "")..";]"
+			.."button[2.5,7.5;3,1;back;" .. esc(S("Back")) .. "]"
+	end
+
+	minetest.show_formspec(player_name, "bulletin_boards:bulletin", formspec)
+end
+
+
+minetest.register_on_player_receive_fields(function(player, formname, fields)
+	if formname ~= "bulletin_boards:board" then return end
+	local player_name = player:get_player_name()
+	for field, state in pairs(fields) do
+		if field:sub(1, #"button_") == "button_" then
+			local i = tonumber(field:sub(#"button_"+1))
+			local state = bulletin_boards.player_state[player_name]
+			if state then
+				show_bulletin(player, state.board, i)
+			end
+			return
+		end		
+	end	
+end)
+
+minetest.register_on_player_receive_fields(function(player, formname, fields)
+	if formname ~= "bulletin_boards:bulletin" then return end
+	local player_name = player:get_player_name()
+	local state = bulletin_boards.player_state[player_name]
+	if not state then return end	
+	local board = get_board(state.board)
+	if not board then return end
+	
+	if fields.back then
+		bulletin_boards.player_state[player_name] = nil
+		show_board(player_name, state.board)
+	end
+	
+	if fields.title ~= "" and fields.text ~= "" then
+		for field, _ in pairs(fields) do
+			if field:sub(1, #"save_") == "save_" then
+				local i = tonumber(field:sub(#"save_"+1))
+				local bulletin = {}
+				bulletin.owner = player_name
+				bulletin.title = fields.title:sub(1, max_title_size)
+				bulletin.text = fields.text:sub(1, max_text_size)
+				bulletin.icon = icons[i]
+				bulletin.timestamp = minetest.get_gametime()
+				board[state.index] = bulletin
+				save_boards()
+				break
+			end
+		end
+	end
+	
+	bulletin_boards.player_state[player_name] = nil
+	show_board(player_name, state.board)
+end)
+
+
+local function generate_random_board(rez, count)
+	local tex = {"([combine:"..rez.."x"..rez}
+	for i = 1, count do
+		tex[#tex+1] = ":"..math.random(1,rez-32)..","..math.random(1,rez-32)
+			.."="..icons[math.random(1,#icons)]
+	end
+	tex[#tex+1] = "^[resize:16x16)"
+	return table.concat(tex)
+end
+
+local function register_board(board_name, board_desc)
+	local bulletin_board_def = {
+		description = board_desc,
+		groups = {choppy=1},
+		tiles = {"bulletin_boards_corkboard.png^"..generate_random_board(98, 7).."^bulletin_boards_frame.png"},
+		paramtype = "light",
+		paramtype2 = "wallmounted",
+		sunlight_propagates = true,
+		drawtype = "nodebox",
+		node_box = {
+			type = "wallmounted",
+			wall_top    = {-0.5, 0.4375, -0.5, 0.5, 0.5, 0.5},
+			wall_bottom = {-0.5, -0.5, -0.5, 0.5, -0.4375, 0.5},
+			wall_side   = {-0.5, -0.5, -0.5, -0.4375, 0.5, 0.5},
+		},
+
+		on_rightclick = function(pos, node, clicker, itemstack, pointed_thing)
+			local player_name = clicker:get_player_name()
+			show_board(player_name, board_name)
+		end,
+		
+		on_construct = function(pos)
+			local meta = minetest.get_meta(pos)
+			meta:set_string("infotext", board_desc)
+		end,
+	}
+
+	minetest.register_node("bulletin_boards:bulletin_board_"..board_name, bulletin_board_def)
+end
+
+
+register_board("test1", S("Test Board 1"))
+register_board("test2", S("Test Board 2"))
+register_board("test3", S("Test Board 3"))

mod.conf

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+name=bulletin_boards
+description = Allows creation of global bulletin boards where players can post public messages

textures/license.txt

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+https://commons.wikimedia.org/wiki/Category:Document_icons