basic HUD for announcements implemented + practical implementation for queues

api.lua

@@ -762,10 +762,13 @@ function arena_lib.remove_player_from_arena(p_name, is_eliminated)
   -- se l'arena era in coda e ora ci son troppi pochi giocatori, annullo la coda
   if arena.in_queue then
     local timer = minetest.get_node_timer(arena.sign)
+    local players_in_arena = arena_lib.get_arena_players_count(arena)
 
-    if arena_lib.get_arena_players_count(arena) < arena.min_players then
+    if players_in_arena < arena.min_players then
       timer:stop()
       arena.in_queue = false
+      arena_lib.HUD_send_msg_all("hotbar", arena, arena.name .. " | " .. players_in_arena .. "/" .. arena.max_players .. 
+        " | in attesa di più giocatori... (" .. arena.min_players - players_in_arena .. ")")
       arena_lib.send_message_players_in_arena(arena, mod_ref.prefix .. S("The queue has been cancelled due to not enough players"))
     end
 

hud.lua

@@ -0,0 +1,121 @@
+local player_huds = {}    -- KEY: p_name, INDEX: {HUD_BG_ID, HUD_TXT_ID}
+
+
+
+function arena_lib.HUD_add(player)
+  
+  local HUD_BROADCAST_IMG = player:hud_add({
+    hud_elem_type = "image",
+    position  = { x = 0.5, y = 0.2},
+    text      = "",
+    scale     = { x = 25, y = 2},
+    number    = 0xFFFFFF,
+  })
+  
+  local HUD_BROADCAST_TXT = player:hud_add({
+    hud_elem_type = "text",
+    position  = { x = 0.5, y = 0.2},
+    text      = "",
+    scale     = { x = 1, y = 1},
+    number    = 0xFFFFFF,
+  })
+  
+  local HUD_HOTBAR_IMG = player:hud_add({
+    hud_elem_type = "image",
+    position  = { x = 0.5, y = 0.89},
+    text      = "",
+    scale     = { x = 25, y = 1.5},
+    number    = 0xFFFFFF,
+  })
+  
+  local HUD_HOTBAR_TXT = player:hud_add({
+    hud_elem_type = "text",
+    position  = { x = 0.5, y = 0.89},
+    text      = "",
+    scale     = { x = 1, y = 1},
+    number    = 0xFFFFFF,
+  })
+  
+  player_huds[player:get_player_name()] = {HUD_BROADCAST_IMG, HUD_BROADCAST_TXT, HUD_HOTBAR_IMG, HUD_HOTBAR_TXT}
+end
+
+
+
+function arena_lib.HUD_send_msg(HUD_type, p_name, new_msg)
+  
+  local player = minetest.get_player_by_name(p_name)
+  local p_HUD = player_huds[p_name]
+  
+  if HUD_type == "broadcast" then
+    player:hud_change(p_HUD[1], "text", "arenalib_hud_bg.png")
+    player:hud_change(p_HUD[2], "text", new_msg)
+  elseif HUD_type == "hotbar" then
+    player:hud_change(p_HUD[3], "text", "arenalib_hud_bg2.png")
+    player:hud_change(p_HUD[4], "text", new_msg)
+  end
+  
+end
+
+
+
+function arena_lib.HUD_send_msg_all(HUD_type, arena, new_msg)
+  for pl_name, _ in pairs(arena.players) do
+    
+    local pl = minetest.get_player_by_name(pl_name)
+    local pl_HUD = player_huds[pl_name]
+    
+    if HUD_type == "broadcast" then
+      pl:hud_change(pl_HUD[1], "text", "arenalib_hud_bg.png")
+      pl:hud_change(pl_HUD[2], "text", new_msg)
+    elseif HUD_type == "hotbar" then
+      pl:hud_change(pl_HUD[3], "text", "arenalib_hud_bg2.png")
+      pl:hud_change(pl_HUD[4], "text", new_msg)
+    end
+  end
+end
+
+
+
+function arena_lib.HUD_hide(HUD_type, player_or_arena)
+  
+  if type(player_or_arena) == "string" then
+    
+    local player = minetest.get_player_by_name(player_or_arena)
+    local p_HUD = player_huds[player_or_arena]
+    
+    if HUD_type == "broadcast" then
+      player:hud_change(p_HUD[1], "text", "")
+      player:hud_change(p_HUD[2], "text", "")
+    elseif HUD_type == "hotbar" then
+      player:hud_change(p_HUD[3], "text", "")
+      player:hud_change(p_HUD[4], "text", "")
+    elseif HUD_type == "all" then
+      player:hud_change(p_HUD[1], "text", "")
+      player:hud_change(p_HUD[2], "text", "")
+      player:hud_change(p_HUD[3], "text", "")
+      player:hud_change(p_HUD[4], "text", "")
+    end
+    
+  elseif type(player_or_arena) == "table" then
+    
+    for pl_name, _ in pairs(player_or_arena.players) do
+      
+      local pl = minetest.get_player_by_name(pl_name)
+      local pl_HUD = player_huds[pl_name]
+      
+      if HUD_type == "broadcast" then
+        pl:hud_change(pl_HUD[1], "text", "")
+        pl:hud_change(pl_HUD[2], "text", "")
+      elseif HUD_type == "hotbar" then
+        pl:hud_change(pl_HUD[3], "text", "")
+        pl:hud_change(pl_HUD[4], "text", "")
+      elseif HUD_type == "all" then
+        pl:hud_change(pl_HUD[1], "text", "")
+        pl:hud_change(pl_HUD[2], "text", "")
+        pl:hud_change(pl_HUD[3], "text", "")
+        pl:hud_change(pl_HUD[4], "text", "")
+      end
+    end
+  end
+      
+end

init.lua

@@ -1,6 +1,7 @@
 dofile(minetest.get_modpath("arena_lib") .. "/api.lua")
 dofile(minetest.get_modpath("arena_lib") .. "/callbacks.lua")
 dofile(minetest.get_modpath("arena_lib") .. "/debug_utilities.lua")
+dofile(minetest.get_modpath("arena_lib") .. "/hud.lua")
 dofile(minetest.get_modpath("arena_lib") .. "/items.lua")
 dofile(minetest.get_modpath("arena_lib") .. "/player_manager.lua")
 dofile(minetest.get_modpath("arena_lib") .. "/signs.lua")

player_manager.lua

@@ -1,6 +1,7 @@
 minetest.register_on_joinplayer(function(player)
 
   player:set_pos(arena_lib.get_hub_spawn_point())
+  arena_lib.HUD_add(player)
 
 end)
 

signs.lua

@@ -4,6 +4,8 @@
 local S = minetest.get_translator("arena_lib")
 
 local function in_game_txt(arena) end
+local function HUD_countdown(arena, seconds) end
+local function arena_display_format(arena, players_in_arena, msg) end
 
 
 
@@ -52,14 +54,23 @@ minetest.override_item("default:sign_wall", {
           sign_arena.players[p_name] = nil
           arena_lib.update_sign(pos, sign_arena)
           arena_lib.remove_from_queue(p_name)
+          arena_lib.HUD_hide("all", p_name)
           minetest.chat_send_player(p_name, mod_ref.prefix .. S("You have left the queue"))
           arena_lib.send_message_players_in_arena(sign_arena, mod_ref.prefix .. S("@1 has left the queue", p_name))
           
+          local players_in_arena = arena_lib.get_arena_players_count(sign_arena)
+          
           -- ...e la annullo se non ci sono più abbastanza persone
-          if arena_lib.get_arena_players_count(sign_arena) < sign_arena.min_players and sign_arena.in_queue then
+          if players_in_arena < sign_arena.min_players and sign_arena.in_queue then
             minetest.get_node_timer(pos):stop()
+            arena_lib.HUD_hide("broadcast", sign_arena)
+            arena_lib.HUD_send_msg_all("hotbar", sign_arena, arena_display_format(sign_arena, players_in_arena, "in attesa di più giocatori... ") .. 
+              "(" .. sign_arena.min_players - players_in_arena .. ")")
             arena_lib.send_message_players_in_arena(sign_arena, mod_ref.prefix .. S("The queue has been cancelled due to not enough players"))
             sign_arena.in_queue = false
+          else
+            -- (il numero giocatori è cambiato, per questo aggiorno)
+            arena_lib.HUD_send_msg_all("hotbar", sign_arena, arena_display_format(sign_arena, players_in_arena,"Preparati!"))
           end
           
           return 
@@ -74,9 +85,14 @@ minetest.override_item("default:sign_wall", {
         arena_lib.update_sign(old_arena.sign, old_arena)
         arena_lib.send_message_players_in_arena(old_arena, old_mod_ref.prefix .. S("@1 has left the queue", p_name))
         
+        local players_in_arena = arena_lib.get_arena_players_count(old_arena)
+        
         -- annullando la coda della precedente se non ci sono più abbastanza giocatori
-        if arena_lib.get_arena_players_count(old_arena) < old_arena.min_players and old_arena.in_queue then
+        if players_in_arena < old_arena.min_players and old_arena.in_queue then
           minetest.get_node_timer(old_arena.sign):stop()
+          arena_lib.HUD_hide("broadcast", old_arena)
+          arena_lib.HUD_send_msg_all("hotbar", old_arena, arena_display_format(old_arena, players_in_arena, "in attesa di più giocatori... ") .. 
+            "(" .. old_arena.min_players - players_in_arena .. ")")
           arena_lib.send_message_players_in_arena(old_arena, old_mod_ref.prefix .. S("The queue has been cancelled due to not enough players"))
           old_arena.in_queue = false
         end
@@ -107,14 +123,23 @@ minetest.override_item("default:sign_wall", {
       local timer = minetest.get_node_timer(pos)
 
       -- se ci sono abbastanza giocatori, parte il timer di attesa
-      if arena_lib.get_arena_players_count(sign_arena) == sign_arena.min_players and not sign_arena.in_queue and not sign_arena.in_game then
-        arena_lib.send_message_players_in_arena(sign_arena, mod_ref.prefix .. S("The game begins in @1 seconds!", mod_ref.queue_waiting_time))
-        sign_arena.in_queue = true
-        timer:start(mod_ref.queue_waiting_time)
+      if not sign_arena.in_queue and not sign_arena.in_game then
+        
+        local players_in_arena = arena_lib.get_arena_players_count(sign_arena)
+        
+        if players_in_arena == sign_arena.min_players then
+          sign_arena.in_queue = true
+          timer:start(mod_ref.queue_waiting_time)
+          HUD_countdown(sign_arena, players_in_arena, mod_ref.queue_waiting_time)
+        elseif players_in_arena < sign_arena.min_players then
+          arena_lib.HUD_send_msg("hotbar", p_name, arena_display_format(sign_arena, players_in_arena, " in attesa di più giocatori... ") .. 
+            "(" .. sign_arena.min_players - players_in_arena .. ")")
+        end
       end
+        
 
       -- se raggiungo i giocatori massimi e la partita non è iniziata, parte subito
-      if arena_lib.get_arena_players_count(sign_arena) == sign_arena.max_players and sign_arena.in_queue then
+      if players_in_arena == sign_arena.max_players and sign_arena.in_queue then
         timer:stop()
         timer:start(0.01)
       end
@@ -134,6 +159,7 @@ minetest.override_item("default:sign_wall", {
       sign_arena.in_game = true
       arena_lib.update_sign(pos, sign_arena)
 
+      arena_lib.HUD_hide("all", sign_arena)
       arena_lib.load_arena(mod, arena_ID)
 
       return false
@@ -187,6 +213,30 @@ end
 ---------------FUNZIONI LOCALI----------------
 ----------------------------------------------
 
+function HUD_countdown(arena, players_in_arena, seconds)
+  if not arena.in_queue or seconds == 0 then return end
+  
+  -- dai 3 secondi in giù il messaggio è stampato su broadcast
+  if seconds <= 3 then
+    arena_lib.HUD_send_msg_all("broadcast", arena, S("The game begins in @1 seconds!", seconds))
+    arena_lib.HUD_send_msg_all("hotbar", arena, arena_display_format(arena, players_in_arena, "Preparati!"))
+  else
+    arena_lib.HUD_send_msg_all("hotbar", arena, arena_display_format(arena, players_in_arena, "" .. seconds .. " secondi all'inzio"))
+  end
+  
+  minetest.after(1, function()
+    HUD_countdown(arena, players_in_arena, seconds-1)
+  end)
+end
+
+
+-- es. Foresta | 3/4 | Il match inizierà a breve
+function arena_display_format(arena, players_in_arena, msg)
+  return arena.name .. " | " .. players_in_arena .. "/" .. arena.max_players .. " | " .. msg
+end
+
+
+
 function in_game_txt(arena)
   local txt