Add LuaCheck and GitHub workflow (#32)

.github/workflows/build.yml

@@ -0,0 +1,11 @@
+on: [push, pull_request]
+name: build
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - name: lint
+        uses: Roang-zero1/factorio-mod-luacheck@master
+        with:
+          luacheckrc_url: ""

.luacheckrc

@@ -0,0 +1,19 @@
+allow_defined_top = true
+unused_args = false
+max_line_length = false
+
+read_globals = {
+    string = {fields = {"split", "trim"}},
+    table = {fields = {"copy", "getn"}},
+
+    "player_monoids",
+    "playerphysics",
+    "hb",
+    "vector",
+    "hunger_ng",
+}
+
+globals = {
+    "minetest",
+    "hbhunger"
+}

init.lua

@@ -130,8 +130,8 @@ local function is_walkable(ground)
 end
 
 local function create_particles(player, name, ground)
-  local def = minetest.registered_nodes[ground.name]
-  local tile = def.tiles[1] or def.inventory_image
+  local def = minetest.registered_nodes[ground.name] or {}
+  local tile = def.tiles and def.tiles[1] or def.inventory_image
   if type(tile) == "table" then
     tile = tile.name
   end
@@ -237,7 +237,7 @@ local function sprint_step(player, dtime)
   if (player_stamina > 0 and hunger > starve_limit and ground) or fast then
     start_sprint(player)
     if stamina and not fast then drain_stamina(player) end
-    if starve then drain_hunger(player, name) end
+    if starve and not fast then drain_hunger(player, name) end
     if breath and not fast and breath_timer[name] >= 2 then
       drain_breath(player)
       breath_timer[name] = 0