Add luacheck and fix warnings

.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@master
+      - name: Luacheck
+        uses: lunarmodules/luacheck@master

.luacheckrc

@@ -0,0 +1,12 @@
+unused_args = false
+max_line_length = 150
+
+read_globals = {
+	"minetest",
+	"vector",
+	"ItemStack",
+	"default",
+	"tnt",
+	"mcl_sounds",
+	"mcl_explosions"
+}

init.lua

@@ -56,12 +56,6 @@ local crossbow_range = tonumber(minetest.settings:get("torch_bomb_base_crossbow_
 local enable_crossbows = minetest.settings:get_bool("torch_bomb_enable_crossbows", true)
 local torch_bow_uses = tonumber(minetest.settings:get("torch_bomb_base_crossbow_uses")) or 30
 
--- Detect creative mod
-local creative_mod = minetest.get_modpath("creative")
--- Cache creative mode setting as fallback if creative mod not present
-local creative_mode_cache = minetest.settings:get_bool("creative_mode")
-
-
 -- 12 torches grenade
 local ico1 = {
 	vector.new(0.000000,	-1.000000,	0.000000),
@@ -336,7 +330,6 @@ local function embed_torch(target, placer, pos)
 	torch_def_on_place(ItemStack(torch_item), placer, target)
 	local target_pos = target.above
 	local dir_back = vector.normalize(vector.subtract(pos, target_pos))
-	local vel_back = vector.multiply(dir_back, 10)
 	minetest.add_particlespawner({
 		amount = math.random(1,6),
 		time = 0.1,
@@ -706,17 +699,13 @@ if enable_grenade then
 			local lua_entity = obj:get_luaentity()
 			lua_entity.player_name = user:get_player_name()
 
-			minetest.sound_play({name="tnt_ignite"},
-			{
-				pos=player_pos,
-				object = object,
+			minetest.sound_play({name="tnt_ignite"}, {
+				pos = player_pos,
 				gain = 1.0,
 				max_hear_distance = 32,
-			},
-			true)
+			}, true)
 
-			if not ((creative_mod and creative.is_enabled_for(user:get_player_name())) or
-						creative_mode_cache) then
+			if not minetest.is_creative_enabled(user:get_player_name()) then
 				itemstack:set_count(itemstack:get_count() - 1)
 			end
 
@@ -773,7 +762,7 @@ end
 ----------------------------------------------------------------------
 -- Torch crossbows
 
-local function register_torch_bow(name, desc, material, image, torch_bow_range, torch_bow_uses)
+local function register_torch_bow(name, desc, material, image, torch_bow_range, local_torch_bow_uses)
     minetest.register_tool("torch_bomb:torch_crossbow_" .. name, {
         description = S("@1 Torch Crossbow", desc),
         inventory_image = image,
@@ -794,10 +783,9 @@ local function register_torch_bow(name, desc, material, image, torch_bow_range,
                 return
             end
 
-			if not ((creative_mod and creative.is_enabled_for(user:get_player_name())) or
-				creative_mode_cache) then
+			if not minetest.is_creative_enabled(user:get_player_name()) then
 				inv:remove_item("main", {name=torch_item, count=1})
-				itemstack:add_wear(65535/(torch_bow_uses-1))
+				itemstack:add_wear(65535/(local_torch_bow_uses-1))
 			end
 
             local dir = user:get_look_dir()

mod.conf

@@ -1,4 +1,4 @@
 name = torch_bomb
 description = Place torches throughout your entire surroundings with a torch bomb
-depends =
 optional_depends = mcl_core, mcl_sounds, mcl_explosions, mcl_tnt, default, tnt, creative, farming
+min_minetest_version = 5.3.0