Add LuaCheck GitHub workflow (#16)

.github/workflows/luacheck.yml

@@ -0,0 +1,10 @@
+name: luacheck
+on: [push, pull_request]
+jobs:
+  luacheck:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: LuaCheck
+        uses: lunarmodules/luacheck@master

.luacheckrc

@@ -2,13 +2,13 @@ unused_args = false
 
 globals = {
 	"snow", "winterize",
-
-	"minetest", "throwable_snow", "default", "ctf_teams", "hud_events",
+	"minetest", "throwable_snow", "default",
+	"ctf_teams", "hud_events", "skybox"
 }
 
 read_globals = {
 	string = {fields = {"split", "trim"}},
-	table = {fields = {"copy", "getn"}},
+	table = {fields = {"copy", "getn", "shuffle"}},
 
 	"dump", "DIR_DELIM",
 	"sfinv", "creative",
@@ -21,7 +21,8 @@ read_globals = {
 	"VoxelArea",
 	"VoxelManip",
 	"PseudoRandom",
-
+	"ctf_map",
+	"ctf_api",
 
 	-- Testing
 	"describe",

santa_hat_event/init.lua

@@ -1,4 +1,5 @@
-if os.date("%m") ~= "12" or tonumber(os.date("%d")) < 11 or tonumber(os.date("%d")) > 25 or not minetest.get_modpath("server_cosmetics") then return end
+if os.date("%m") ~= "12" or tonumber(os.date("%d")) < 11 or tonumber(os.date("%d")) > 2
+	or not minetest.get_modpath("server_cosmetics") then return end
 
 local META_KEY = "server_cosmetics:snowballs:"..os.date("%Y")
 local COSMETIC_KEY = "server_cosmetics:entity:santa_hat:"..os.date("%Y")