Enable shadows by default in devtest (#12157)

* Move all shadow control to util_commands
* Shadows are now controlled with /set_shadow

Co-authored-by: sfan5 <sfan5@live.de>

games/devtest/mods/experimental/lighting.lua

@@ -1,8 +0,0 @@
-core.register_chatcommand("set_lighting", {
-    params = "shadow_intensity",
-    description = "Set lighting parameters.",
-    func = function(player_name, param)
-        local shadow_intensity = tonumber(param)
-        minetest.get_player_by_name(player_name):set_lighting({shadows = { intensity = shadow_intensity} })
-    end
-})

games/devtest/mods/util_commands/init.lua

@@ -293,3 +293,17 @@ minetest.register_chatcommand("dump_item", {
 		return true, str
 	end,
 })
+
+-- shadow control
+minetest.register_on_joinplayer(function (player)
+	player:set_lighting({shadows={intensity = 0.33}})
+end)
+
+core.register_chatcommand("set_shadow", {
+    params = "<shadow_intensity>",
+    description = "Set shadow parameters of current player.",
+    func = function(player_name, param)
+        local shadow_intensity = tonumber(param)
+        minetest.get_player_by_name(player_name):set_lighting({shadows = { intensity = shadow_intensity} })
+    end
+})