Refactor compatibility patches

compatibility/enable_shadows.lua

@@ -0,0 +1,44 @@
+--[[
+    This code is mostly taken from the original enable_shadows mod
+    and tweaked to work with the new monoids.
+    enable_shadows is licensed under MIT, respective Copyright (c) 2022 ROllerozxa
+]]
+
+local S = minetest.get_translator("enable_shadows")
+local storage = minetest.get_mod_storage()
+
+local default_intensity = tonumber(minetest.settings:get("enable_shadows_default_intensity") or 0.33)
+local intensity = tonumber(storage:get("intensity") or default_intensity)
+
+minetest.register_on_joinplayer(function(player)
+    lighting_monoids.shadows:add_change(player, intensity, "enable_shadows:base_value")
+end)
+
+minetest.override_chatcommand("shadow_intensity", {
+	func = function(name, param)
+		local new_intensity
+		if param ~= "" then
+			new_intensity = tonumber(param) or nil
+		else
+			new_intensity = tonumber(default_intensity) or nil
+		end
+
+		if new_intensity < 0 or new_intensity > 1 or new_intensity == nil then
+			minetest.chat_send_player(name, minetest.colorize("#ff0000", S("Invalid intensity.")))
+			return true
+		end
+
+		if new_intensity ~= default_intensity then
+			minetest.chat_send_player(name, S("Set intensity to @1.", new_intensity))
+			storage:set_float("intensity", new_intensity)
+		else
+			minetest.chat_send_player(name, S("Set intensity to default value (@1).", default_intensity))
+			storage:set_string("intensity", "")
+		end
+
+		intensity = new_intensity
+		for _,player in pairs(minetest.get_connected_players()) do
+            lighting_monoids.shadows:add_change(player, new_intensity, "enable_shadows:base_value")
+		end
+	end
+})

compatibility/weather.lua

@@ -0,0 +1,14 @@
+-- Hook into MTG weather mod for compatibility (requires PR #3020)
+if weather ~= nil and weather.on_update ~= nil then
+    weather.on_update = function(player, overrides)
+        if overrides == nil then
+            return
+        end
+        if overrides.shadows and overrides.shadows.intensity then
+            local intensity = overrides.shadows.intensity
+            lighting_monoids.shadows:add_change(player, intensity, "weather:cloud_shadows")
+        end
+        overrides.lighting = nil
+        return overrides
+    end
+end