Optimize code and modernize API calls

* Remove is_connected() and use minetest counterpart

* Less calls to minetest.get_connected_players()

* Deprecated: get_player_velocity

* Luacheck: unused assignements

* Luacheck: unused variable

* Luacheck: already declared variable

---------

Co-authored-by: mazes 80 <>

ca_effects/damage.lua

@@ -43,7 +43,7 @@ local function check_hit(player, ray)
 		)
 		origin = vector.add(origin, windpos)
 	end
-	local ray = minetest.raycast(origin, ppos)
+	ray = minetest.raycast(origin, ppos)
 	local obj = ray:next()
 	-- found nothing
 	if obj == nil then return false end

ca_effects/particles.lua

@@ -165,7 +165,7 @@ local function parse_config(player, particles)
 
 		-- correct spawn coordinates to adjust for player movement
 		if config.adjust_for_velocity then
-			local velocity = player:get_player_velocity()
+			local velocity = player:get_velocity()
 			config.minpos = vector.add(config.minpos, velocity)
 			config.maxpos = vector.add(config.maxpos, velocity)
 		end

lib/api_utility.lua

@@ -1,7 +1,3 @@
-local mod_player_monoids = minetest.get_modpath("player_monoids") ~= nil
-local mod_playerphysics = minetest.get_modpath("playerphysics") ~= nil
-local mod_pova = minetest.get_modpath("pova") ~= nil
-
 local utility = {}
 
 function utility.rangelim(value, min, max)

lib/main.lua

@@ -1,15 +1,6 @@
 local GSCYCLE			=  0.03	* climate_mod.settings.tick_speed	-- only process event loop after this amount of time
 local WORLD_CYCLE = 30.00	* climate_mod.settings.tick_speed	-- only update global environment influences after this amount of time
 
-local function is_connected(playername)
-	local connected = minetest.get_connected_players()
-	for _, player in ipairs(connected) do
-		local name = player:get_player_name()
-		if playername == name then return true end
-	end
-	return false
-end
-
 local gs_timer = 0
 local world_timer = 0
 minetest.register_globalstep(function(dtime)
@@ -29,7 +20,7 @@ minetest.register_globalstep(function(dtime)
 	-- skip weather changes for offline players
 	for effect, data in pairs(previous_effects) do
 		for playername, _ in pairs(data) do
-			if not is_connected(playername) then
+			if not minetest.get_player_by_name(playername) then
 				previous_effects[effect][playername] = nil
 			end
 		end

lib/soundloop.lua

@@ -19,7 +19,6 @@ soundloop.play = function(player, sound, fade)
 	if sounds[player] == nil then sounds[player] = {} end
 	if sounds[player][sound.name] == nil then
 		step = sound.gain / fade
-		start_gain = 0
 	elseif sounds[player][sound.name] ~= sound.gain then
 		minetest.sound_stop(sounds[player][sound.name].handle)
 		start_gain = sounds[player][sound.name].gain

lib/trigger.lua

@@ -68,7 +68,7 @@ local function is_weather_active(player, weather, env)
 end
 
 local function get_weather_effects(player, weather_config, env)
-	local config = {}
+	local config
 	local effects = {}
 	if type(weather_config.effects) == "function" then
 		config = weather_config.effects(env)
@@ -85,22 +85,19 @@ end
 
 function trigger.get_active_effects()
 	local environments = {}
+	local effects = {}
+	climate_mod.current_weather = {}
+
 	for _, player in ipairs(minetest.get_connected_players()) do
-		local playername = player:get_player_name()
+		local pname = player:get_player_name()
 		local hp = player:get_hp()
 		-- skip weather presets for dead players
 		if hp ~= nil and hp > 0 then
-			environments[playername] = trigger.get_player_environment(player)
+			environments[pname] = trigger.get_player_environment(player)
 		end
-	end
-
-	local effects = {}
-	climate_mod.current_weather = {}
-	for wname, wconfig in pairs(climate_mod.weathers) do
-		for _, player in ipairs(minetest.get_connected_players()) do
-			local pname = player:get_player_name()
-			local env = environments[pname]
-			if env ~= nil then
+		local env = environments[pname]
+		if env ~= nil then
+			for wname, wconfig in pairs(climate_mod.weathers) do
 				if is_weather_active(player, wname, env) then
 					if climate_mod.current_weather[pname] == nil then
 						climate_mod.current_weather[pname] = {}