From 6f9f7a2cb976e2e8d67f7bee3d85747adb875892 Mon Sep 17 00:00:00 2001
From: Wuzzy <Wuzzy2@mail.ru>
Date: Fri, 4 Dec 2020 18:46:04 +0100
Subject: [PATCH] Disable XP by default

---
 mods/HUD/hudbars/init.lua                   |  2 +-
 mods/HUD/mcl_experience/init.lua            | 20 ++++++++++++++++++--
 mods/HUD/mcl_experience/locale/template.txt |  1 +
 settingtypes.txt                            |  5 +++++
 4 files changed, 25 insertions(+), 3 deletions(-)

diff --git a/mods/HUD/hudbars/init.lua b/mods/HUD/hudbars/init.lua
index 44c826656..59d8fc238 100644
--- a/mods/HUD/hudbars/init.lua
+++ b/mods/HUD/hudbars/init.lua
@@ -46,7 +46,7 @@ end
 
 -- Load default settings
 dofile(minetest.get_modpath("hudbars").."/default_settings.lua")
-if minetest.get_modpath("mcl_experience") then
+if minetest.get_modpath("mcl_experience") and minetest.settings:get_bool("mcl_experience", false) then
 	-- reserve some space for experience bar:
 	hb.settings.start_offset_left.y = hb.settings.start_offset_left.y - 20
 	hb.settings.start_offset_right.y = hb.settings.start_offset_right.y - 20
diff --git a/mods/HUD/mcl_experience/init.lua b/mods/HUD/mcl_experience/init.lua
index 0215e6d90..68e8e6dcb 100644
--- a/mods/HUD/mcl_experience/init.lua
+++ b/mods/HUD/mcl_experience/init.lua
@@ -1,4 +1,5 @@
 local S = minetest.get_translator("mcl_experience")
+local USE_XP = minetest.settings:get_bool("mcl_experience", false)
 mcl_experience = {}
 local pool = {}
 local registered_nodes
@@ -99,6 +100,9 @@ end
 
 -- change element of hud
 hud_manager.change_hud = function(data)
+    if not USE_XP then
+        return
+    end
     local name = data.player:get_player_name()
     if player_huds[name] and player_huds[name][data.hud_name] then
         data.player:hud_change(player_huds[name][data.hud_name], data.element, data.data)
@@ -149,7 +153,9 @@ function mcl_experience.set_player_xp_level(player,level)
 	end
 	pool[name].level = level
 	pool[name].xp, pool[name].bar_step, pool[name].next_level = mcl_experience.bar_to_xp(pool[name].bar, level)
-	hud_manager.change_hud({player = player, hud_name = "xp_level", element = "text", data = tostring(level)})
+	if USE_XP then
+		hud_manager.change_hud({player = player, hud_name = "xp_level", element = "text", data = tostring(level)})
+	end
 	-- we may don't update the bar
 end
 
@@ -162,6 +168,10 @@ minetest.register_on_joinplayer(function(player)
 	name = player:get_player_name()
 	temp_pool = pool[name]
 		
+	if not USE_XP then
+		return
+	end
+
 	hud_manager.add_hud(player,"experience_bar",
 	{
 	        hud_elem_type = "statbar", position = {x=0.5, y=1},
@@ -270,7 +280,7 @@ local name
 local temp_pool
 local xp_amount
 minetest.register_on_dieplayer(function(player)
-	if minetest.settings:get_bool("mcl_keepInventory", false) then
+	if minetest.settings:get_bool("mcl_keepInventory", false) or not USE_XP then
 		return
 	end
 
@@ -486,6 +496,9 @@ minetest.register_chatcommand("xp", {
 	description = S("Gives a player some XP"),
 	privs = {server=true},
 	func = function(name, params)
+		if not USE_XP then
+			return false, S("XP are disabled!")
+		end
 		local player, xp = nil, 1000
 		local P, i = {}, 0
 		for str in string.gmatch(params, "([^ ]+)") do
@@ -517,6 +530,9 @@ minetest.register_chatcommand("xp", {
 })
 
 function mcl_experience.throw_experience(pos, amount)
+	if not USE_XP then
+		return false
+	end
 	local i, j = 0, 0
 	local obj, xp
 	while i < amount and j < 100 do
diff --git a/mods/HUD/mcl_experience/locale/template.txt b/mods/HUD/mcl_experience/locale/template.txt
index 19eb6cc60..8494504e9 100644
--- a/mods/HUD/mcl_experience/locale/template.txt
+++ b/mods/HUD/mcl_experience/locale/template.txt
@@ -4,3 +4,4 @@ Error: Too many parameters!=
 Error: Incorrect value of XP=
 Error: Player not found=
 Added @1 XP to @2, total: @3, experience level: @4=
+XP are disabled!=
diff --git a/settingtypes.txt b/settingtypes.txt
index 18471d7bf..8d67e5f91 100644
--- a/settingtypes.txt
+++ b/settingtypes.txt
@@ -86,6 +86,11 @@ mobs_disable_blood (Disable mob damage particles) bool false
 flame_sound (Flame sound) bool true
 
 [Experimental]
+# Whether to use experience.
+# Note that experience points are currently useless.
+
+mcl_experience (Experience) bool false
+
 # Whether ice is translucent. If disabled, ice is fully opaque.
 #
 # Note: As of Minetest version 5.1.0, translucent ice above oceans