diff --git a/.github/workflows/luacheck.yml b/.github/workflows/luacheck.yml
new file mode 100644
index 0000000..a03fe92
--- /dev/null
+++ b/.github/workflows/luacheck.yml
@@ -0,0 +1,17 @@
+name: luacheck
+
+on: [push]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v1
+    - name: apt
+      run: sudo apt-get install -y luarocks
+    - name: luacheck install
+      run: luarocks install --local luacheck
+    - name: luacheck run
+      run: $HOME/.luarocks/bin/luacheck ./
diff --git a/.luacheckrc b/.luacheckrc
index f512afd..8f5548a 100644
--- a/.luacheckrc
+++ b/.luacheckrc
@@ -2,7 +2,10 @@ unused_args = false
 allow_defined_top = true
 
 globals = {
-    "minetest","mesecons_stealthnode","mesecons_random"
+    "minetest",
+    "mesecons_stealthnode",
+    "mesecons_random",
+    "stealthnode"
 }
 
 read_globals = {
@@ -14,5 +17,6 @@ read_globals = {
     "dump", "DIR_DELIM", "VoxelArea", "Settings",
 
     -- MTG
-    "default"
+    "default",
+    "mesecon"
 }
diff --git a/mesecons_stealthnode/register.lua b/mesecons_stealthnode/register.lua
index 8a1fbb2..15d4ecc 100644
--- a/mesecons_stealthnode/register.lua
+++ b/mesecons_stealthnode/register.lua
@@ -14,9 +14,10 @@
 
 function stealthnode.register_stealthnode(modname, node)
 
+    local nodedef = minetest.registered_nodes[modname .. ":" .. node]
     local tile
 
-    if minetest.registered_nodes[modname .. ":" .. node] == nil then
+    if nodedef == nil then
         print("[MOD] " .. minetest.get_current_modname() .. ": "
               .. modname .. ":" .. node .. " not found to register a stealthnode.")
         minetest.log("warning", "[MOD] " .. minetest.get_current_modname() .. ": "
@@ -27,11 +28,14 @@ function stealthnode.register_stealthnode(modname, node)
 
     end
 
-    local newgroup = stealthnode.table_clone(minetest.registered_nodes[modname .. ":" .. node].groups)
+    local newgroup = stealthnode.table_clone(nodedef.groups)
 
     minetest.register_node(":mesecons_stealthnode:" .. modname .. "_" .. node, {
-        description="Stealthnode " .. minetest.registered_nodes[modname .. ":" .. node].description,
+        description="Stealthnode " .. nodedef.description,
         tiles = tile,
+        drawtype = nodedef.drawtype,
+        sunlight_propagates = nodedef.sunlight_propagates,
+        paramtype = nodedef.paramtype,
         is_ground_content = false,
         inventory_image = tile,
         groups = newgroup,
@@ -60,7 +64,7 @@ function stealthnode.register_stealthnode(modname, node)
         }},
         on_construct = function(pos)
             -- remove shadow
-            shadowpos = vector.add(pos, vector.new(0, 1, 0))
+            local shadowpos = vector.add(pos, vector.new(0, 1, 0))
             if (minetest.get_node(shadowpos).name == "air") then
                 minetest.dig_node(shadowpos)
             end
diff --git a/register_stealthnodes/init.lua b/register_stealthnodes/init.lua
index 79366d5..593b908 100644
--- a/register_stealthnodes/init.lua
+++ b/register_stealthnodes/init.lua
@@ -15,6 +15,9 @@ local snodes = {
                 {"default", "stonebrick"},
                 {"default", "stone_block"},
 
+                {"default", "glass"},
+                {"default", "obsidian_glass"},
+
                 {"default", "desert_cobble"},
                 {"default", "desert_stone"},
                 {"default", "desert_stonebrick"},