added detection for afk players

README.md

@@ -6,6 +6,7 @@ To install, rename to "enhancements" and place in the mods/ directory.
 * scale and override different tools
 * clean-up server - unknown nodes and entities
 * [external_cmd]server chat messages from outside Minetest game
+* detect AFK player
 * areas - control privilages
 
 External Commands
@@ -26,4 +27,9 @@ Manage players privileges in 'areas' mod if using the mod only for admin purpose
 
 TODO:
 * create tables from where you can read/write the privileges
-* don't repeat grand/revoke on globalstep - only once when in/out of area - check within tables!
+* don't repeat grand/revoke on globalstep - only once when in/out of area - check within tables!
+
+Detect AFK player
+------------------
+
+AFK (away from keyboard) is detected when player doesn't move for certain time, player will sit down.

afk.lua

@@ -0,0 +1,85 @@
+-- Interval between movement checks (in seconds).
+local INTERVAL = 5
+
+-- Minimum distance to move to register as not AFK (in blocks).
+local MINDIST = 0.2
+
+-- If player does not move within this time, 'sit' player (in seconds).
+local TIMEOUT = 600 -- 10 minutes
+
+local time_afk = {}
+local last_pos = {}
+local chat_afk = {}
+local chat_noafk = {}
+
+local function check_moved()
+
+	for _, p in ipairs(minetest.get_connected_players()) do
+		local plname = p:get_player_name()
+		local pos = p:getpos()
+		local sit = false
+
+		if chat_noafk[plname] == nil then
+			chat_afk[plname] = false
+			chat_noafk[plname] = true
+		end
+
+		if last_pos[plname] then
+			local d = vector.distance(last_pos[plname], pos)
+			-- print("Player: "..plname..", Dist: "..d)
+
+			if d < MINDIST then
+				time_afk[plname] = (time_afk[plname] or 0) + INTERVAL
+
+				if time_afk[plname] >= TIMEOUT then
+
+					default.player_attached[plname] = true
+					default.player_set_animation(p, "sit")
+					sit = true
+	
+					chat_noafk[plname] = false
+
+					if chat_afk[plname] == false then
+						minetest.chat_send_all("* "..plname.." is AFK.")
+						chat_afk[plname] = true
+					end
+
+				end
+
+			else
+				time_afk[plname] = 0
+			end
+		end
+
+		if not sit then
+
+			last_pos[plname] = pos
+			default.player_attached[plname] = false
+			default.player_set_animation(p, "stand")
+	
+			chat_afk[plname] = false
+
+			if chat_noafk[plname] == false then
+				minetest.chat_send_all("* "..plname.." came back from AFK.")
+				chat_noafk[plname] = true
+			end
+		end
+
+		if p:get_hp() == 0 and sit then
+			default.player_set_animation(p, "lay")
+		end
+	end
+
+
+	minetest.after(INTERVAL, check_moved)
+end
+
+minetest.after(INTERVAL, check_moved)
+
+minetest.register_on_leaveplayer(function(player)
+	local plname = player:get_player_name()
+	time_afk[plname] = nil
+	last_pos[plname] = nil
+	chat_afk[plname] = nil
+	chat_noafk[plname] = nil
+end)

init.lua

@@ -1,4 +1,4 @@
--- main setings
+-- main settings
 dofile(minetest.get_modpath("enhancements").."/settings.txt")
 
 -- tools enhancements
@@ -24,6 +24,13 @@ if EXTERNAL_CMD then
 	print("[Mod][enhancements] EXTERNAL_CMD enabled")
 end
 
+-- detect AFK players
+if PLAYER_AFK then
+	dofile(minetest.get_modpath("enhancements").."/afk.lua")
+
+	print("[Mod][enhancements] PLAYER_AFK enabled")
+end
+
 -- manage privileges i areas mod - if using areas mod only for admin purposes
 -- WIP DONT ENABLE! 
 if AREAS_ENHANCE and minetest.get_modpath("areas") then

settings.txt

@@ -1,4 +1,5 @@
 TOOLS_ENHANCE = true
 CLEAN_UNKNOWN = true
 EXTERNAL_CMD = true
+PLAYER_AFK = true
 AREAS_ENHANCE = false