Initial Commit

.gitignore

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+.idea

api.lua

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+scoreboard_lib.scoreboards = {}
+
+Scoreboard = {
+    -- players to show the scoreboard to - key index value player
+    players = {},
+    -- table containing ids of the huds of all the players - key player value {bg_hud_id = 1, text_hud_id = 1}
+    hud_ids = {},
+    -- because the scoreboard is composed by a background and a text we need to
+    -- define the two HUD to use later
+    background_def = {
+        hud_elem_type = "image",
+        position = { x = 1, y = 0.5 },
+        scale = { x = 1, y = 1 },
+        alignment = { x = -1, y = 0 },
+        text = "scoreboard_bg.png",
+    },
+    text_def = {
+        hud_elem_type = "text",
+        position = {x = 1, y = 0.5},
+        alignment = {x = 1, y = 1},
+        offset = {x = -100, y = -70},
+        number = 0xFFFFFF,
+        text = "Default"
+    }
+}
+
+--[[
+{
+position = { x = 1, y = 0.5 },
+alignment = { x = -1, y = 0 },
+text = "Default",
+text_color = 0xFFFFFF,
+players = {}
+}
+--]]
+function Scoreboard:new(def)
+    local scoreboard = {}
+
+    setmetatable(scoreboard, self)
+    self.__index = self
+    if (def.position) then
+        scoreboard.background_def.position = def.position
+        scoreboard.text_def.position = def.position
+    end
+    if (def.alignment) then
+        scoreboard.background_def.alignment = def.alignment
+        scoreboard.text_def.alignment = def.alignment
+    end
+    if (def.text) then
+        scoreboard.text_def.text = def.text
+    end
+    if (def.text_color) then
+        scoreboard.text_def.number = def.text_color
+    end
+    if (def.players) then
+        for i, player in pairs(def.players) do
+            local player_name = player:get_player_name()
+            scoreboard.players[player_name] = player
+            scoreboard.hud_ids[player_name] = {bg_hud_id = nil, text_hud_id = nil}
+        end
+    end
+    table.insert(scoreboard_lib.scoreboards, scoreboard)
+    return scoreboard
+end
+
+function Scoreboard:show()
+    for player_name, player_hud_ids in pairs(self.hud_ids) do
+        local player = minetest.get_player_by_name(player_name)
+        if (player_hud_ids) then
+            if (player_hud_ids.bg_hud_id ~= nil) then
+                player:hud_remove(player_hud_ids.bg_hud_id)
+            end
+            if (player_hud_ids.text_hud_id ~= nil) then
+                player:hud_remove(player_hud_ids.text_hud_id)
+            end
+        end
+        player_hud_ids.bg_hud_id = player:hud_add(self.background_def)
+        player_hud_ids.text_hud_id = player:hud_add(self.text_def)
+    end
+end
+
+function Scoreboard:update_players(players)
+    for i, player in pairs(players) do
+        if (self.players[player:get_player_name()] == nil) then
+            self.players[player:get_player_name()] = player
+            self.hud_ids[player:get_player_name()] = {bg_hud_id = nil, text_hud_id = nil }
+        end
+    end
+end

init.lua

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+scoreboard_lib = {}
+
+scoreboard_lib.path = minetest.get_modpath(minetest.get_current_modname())
+
+dofile(scoreboard_lib.path.."/api.lua")
+dofile(scoreboard_lib.path.."/test.lua")

mod.conf

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+name = scoreboard_lib
+depends = default

test.lua

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+local scoreboard
+
+minetest.register_on_joinplayer(function(player)
+    if scoreboard == nil then
+        scoreboard = Scoreboard:new({
+            position = { x = 1, y = 0.5 },
+            alignment = { x = -1, y = 0 },
+            text = "NINOOO",
+            text_color = 0xFF0000,
+            players = {}
+        })
+    end
+    scoreboard:show()
+end)
+
+minetest.register_on_chat_message(function(name, message)
+    if string.match(message, "mettilacera") then
+        minetest.chat_send_player(name, "Ti aggiungo la sb "..name)
+        scoreboard:update_players({minetest.get_player_by_name(name)})
+        scoreboard:show()
+    end
+end)