add basic API to register player globalstep

mods/CORE/mcl_util/init.lua

@@ -1,3 +1,5 @@
+local modpath = minetest.get_modpath(minetest.get_current_modname())
+
 mcl_util = {}
 
 -- Based on minetest.rotate_and_place
@@ -418,3 +420,5 @@ function mcl_util.get_color(colorstr)
 		return colorstr, hex
 	end
 end
+
+dofile(modpath.."/playerstep.lua")

mods/CORE/mcl_util/playerstep.lua

@@ -0,0 +1,19 @@
+local get_connected_players = minetest.get_connected_players
+
+mcl_util.registered_player_globalstep = {}
+local registered_player_globalstep = mcl_util.registered_player_globalstep
+
+function mcl_util.register_player_globalstep(func)
+    table.insert(mcl_util.registered_player_globalstep, func)
+end
+
+minetest.register_on_mods_loaded(function()
+    minetest.register_globalstep(function(dtime)
+        local players = get_connected_players()
+        for _,func in pairs(registered_player_globalstep) do
+            for _,player in pairs(players) do
+                func(player, dtime)
+            end
+        end
+    end)
+end)

mods/HUD/show_wielded_item/init.lua

@@ -64,50 +64,43 @@ minetest.register_on_leaveplayer(function(player)
 	wieldindex[name] = nil
 end)
 
-minetest.register_globalstep(function(dtime)
-	for _, player in pairs(minetest.get_connected_players()) do
-		local player_name = player:get_player_name()
-		local wstack = player:get_wielded_item()
-		local wname = wstack:get_name()
-		local windex = player:get_wield_index()
-
-		if dtimes[player_name] and dtimes[player_name] < dlimit then
-			dtimes[player_name] = dtimes[player_name] + dtime
-			if dtimes[player_name] > dlimit and huds[player_name] then
-				player:hud_change(huds[player_name], 'text', "")
-			end
+mcl_util.register_player_globalstep(function(player, dtime)
+	local player_name = player:get_player_name()
+	local wstack = player:get_wielded_item()
+	local wname = wstack:get_name()
+	local windex = player:get_wield_index()
+	if dtimes[player_name] and dtimes[player_name] < dlimit then
+		dtimes[player_name] = dtimes[player_name] + dtime
+		if dtimes[player_name] > dlimit and huds[player_name] then
+			player:hud_change(huds[player_name], 'text', "")
 		end
+	end
 
-		-- Update HUD when wielded item or wielded index changed
-		if wname ~= wield[player_name] or windex ~= wieldindex[player_name] then
-			wieldindex[player_name] = windex
-			wield[player_name] = wname
-			dtimes[player_name] = 0
-
-			if huds[player_name] then 
-
-				local def = minetest.registered_items[wname]
-				local meta = wstack:get_meta()
-
-				--[[ Get description. Order of preference:
-				* description from metadata
-				* description from item definition
-				* itemstring ]]
-				local desc = meta:get_string("description")
-				if (desc == nil or desc == "") and def then
-					desc = def.description
-				end
-				if desc == nil or desc == "" then
-					desc = wname
-				end
-				-- Cut off item description after first newline
-				local firstnewline = string.find(desc, "\n")
-				if firstnewline then
-					desc = string.sub(desc, 1, firstnewline-1)
-				end
-				player:hud_change(huds[player_name], 'text', desc)
+	-- Update HUD when wielded item or wielded index changed
+	if wname ~= wield[player_name] or windex ~= wieldindex[player_name] then
+		wieldindex[player_name] = windex
+		wield[player_name] = wname
+		dtimes[player_name] = 0
+		if huds[player_name] then 
+			local def = minetest.registered_items[wname]
+			local meta = wstack:get_meta()
+			--[[ Get description. Order of preference:
+			* description from metadata
+			* description from item definition
+			* itemstring ]]
+			local desc = meta:get_string("description")
+			if (desc == nil or desc == "") and def then
+				desc = def.description
 			end
+			if desc == nil or desc == "" then
+				desc = wname
+			end
+			-- Cut off item description after first newline
+			local firstnewline = string.find(desc, "\n")
+			if firstnewline then
+				desc = string.sub(desc, 1, firstnewline-1)
+			end
+			player:hud_change(huds[player_name], 'text', desc)
 		end
 	end
 end)
-

mods/HUD/show_wielded_item/mod.conf

@@ -1,4 +1,5 @@
 name = show_wielded_item
 author = 4aiman
 description = Displays the name of the wielded item.
+depends = mcl_util
 optional_depends = hudbars