diff --git a/src/assets/AssetsLoader.cpp b/src/assets/AssetsLoader.cpp
index 85dc5641..6f2e64fc 100644
--- a/src/assets/AssetsLoader.cpp
+++ b/src/assets/AssetsLoader.cpp
@@ -16,7 +16,6 @@
 #include "../content/Content.h"
 #include "../content/ContentPack.h"
 #include "../logic/scripting/scripting.h"
-#include "../logic/scripting/Environment.h"
 
 static debug::Logger logger("assets-loader");
 
@@ -69,7 +68,7 @@ bool AssetsLoader::loadNext() {
     }
 }
 
-void addLayouts(int env, const std::string& prefix, const fs::path& folder, AssetsLoader& loader) {
+void addLayouts(scriptenv env, const std::string& prefix, const fs::path& folder, AssetsLoader& loader) {
     if (!fs::is_directory(folder)) {
         return;
     }
@@ -197,7 +196,7 @@ void AssetsLoader::addDefaults(AssetsLoader& loader, const Content* content) {
             auto pack = entry.second.get();
             auto& info = pack->getInfo();
             fs::path folder = info.folder / fs::path("layouts");
-            addLayouts(pack->getEnvironment()->getId(), info.id, folder, loader);
+            addLayouts(pack->getEnvironment(), info.id, folder, loader);
         }
     }
     loader.add(AssetType::atlas, TEXTURES_FOLDER+"/blocks", "blocks");
diff --git a/src/assets/AssetsLoader.h b/src/assets/AssetsLoader.h
index e03b5871..a32e03bf 100644
--- a/src/assets/AssetsLoader.h
+++ b/src/assets/AssetsLoader.h
@@ -3,6 +3,7 @@
 
 #include "Assets.h"
 #include "../interfaces/Task.h"
+#include "../typedefs.h"
 #include "../delegates.h"
 
 #include <string>
@@ -35,9 +36,9 @@ struct AssetCfg {
 };
 
 struct LayoutCfg : AssetCfg {
-    int env;
+    scriptenv env;
 
-    LayoutCfg(int env) : env(env) {}
+    LayoutCfg(scriptenv env) : env(env) {}
 };
 
 struct SoundCfg : AssetCfg {
diff --git a/src/content/ContentLoader.cpp b/src/content/ContentLoader.cpp
index 60557ef0..20043c76 100644
--- a/src/content/ContentLoader.cpp
+++ b/src/content/ContentLoader.cpp
@@ -19,7 +19,6 @@
 
 #include "ContentPack.h"
 #include "../logic/scripting/scripting.h"
-#include "../logic/scripting/Environment.h"
 
 namespace fs = std::filesystem;
 
@@ -328,7 +327,7 @@ void ContentLoader::load(ContentBuilder& builder) {
 
     auto runtime = new ContentPackRuntime(*pack, scripting::create_pack_environment(*pack));
     builder.add(runtime);
-    env = runtime->getEnvironment()->getId();
+    env = runtime->getEnvironment();
     ContentPackStats& stats = runtime->getStatsWriteable();
 
     fixPackIndices();
diff --git a/src/content/ContentLoader.h b/src/content/ContentLoader.h
index b176b861..df968565 100644
--- a/src/content/ContentLoader.h
+++ b/src/content/ContentLoader.h
@@ -18,7 +18,7 @@ namespace dynamic {
 
 class ContentLoader {
     const ContentPack* pack;
-    int env = 0;
+    scriptenv env;
 
     void loadBlock(Block& def, std::string full, std::string name);
     void loadCustomBlockModel(Block& def, dynamic::Map* primitives);
diff --git a/src/content/ContentPack.cpp b/src/content/ContentPack.cpp
index 15509dee..2cd2fc72 100644
--- a/src/content/ContentPack.cpp
+++ b/src/content/ContentPack.cpp
@@ -7,7 +7,6 @@
 #include "../files/files.h"
 #include "../files/engine_paths.h"
 #include "../data/dynamic.h"
-#include "../logic/scripting/Environment.h"
 
 namespace fs = std::filesystem;
 
@@ -141,7 +140,7 @@ fs::path ContentPack::findPack(const EnginePaths* paths, fs::path worldDir, std:
 
 ContentPackRuntime::ContentPackRuntime(
     ContentPack info,
-    std::unique_ptr<scripting::Environment> env
+    scriptenv env
 ) : info(info), env(std::move(env))
 {
 }
diff --git a/src/content/ContentPack.h b/src/content/ContentPack.h
index a9cfd875..8571b34f 100644
--- a/src/content/ContentPack.h
+++ b/src/content/ContentPack.h
@@ -1,6 +1,8 @@
 #ifndef CONTENT_CONTENT_PACK_H_
 #define CONTENT_CONTENT_PACK_H_
 
+#include "../typedefs.h"
+
 #include <string>
 #include <vector>
 #include <stdexcept>
@@ -85,11 +87,11 @@ struct ContentPackStats {
 class ContentPackRuntime {
     ContentPack info;
     ContentPackStats stats {};
-    std::unique_ptr<scripting::Environment> env;
+    scriptenv env;
 public:
     ContentPackRuntime(
         ContentPack info,
-        std::unique_ptr<scripting::Environment> env
+        scriptenv env
     );
     ~ContentPackRuntime();
 
@@ -109,8 +111,8 @@ public:
         return info;
     }
 
-    inline scripting::Environment* getEnvironment() const {
-        return env.get();
+    inline scriptenv getEnvironment() const {
+        return env;
     }
 };
 
diff --git a/src/engine.cpp b/src/engine.cpp
index 052c3e90..3821fafa 100644
--- a/src/engine.cpp
+++ b/src/engine.cpp
@@ -185,6 +185,7 @@ Engine::~Engine() {
     }
     content.reset();
     assets.reset();
+    gui.reset();
     audio::close();
     scripting::close();
     Window::terminate();
diff --git a/src/frontend/InventoryView.cpp b/src/frontend/InventoryView.cpp
index 869a227e..9096e33a 100644
--- a/src/frontend/InventoryView.cpp
+++ b/src/frontend/InventoryView.cpp
@@ -15,7 +15,6 @@
 #include "../items/Inventory.h"
 #include "../items/ItemDef.h"
 #include "../logic/scripting/scripting.h"
-#include "../logic/scripting/Environment.h"
 #include "../maths/voxmaths.h"
 #include "../objects/Player.h"
 #include "../util/stringutil.h"
@@ -372,7 +371,7 @@ void InventoryView::setInventory(std::shared_ptr<Inventory> inventory) {
 
 static slotcallback readSlotFunc(InventoryView* view, gui::UiXmlReader& reader, xml::xmlelement& element, const std::string& attr) {
     auto consumer = scripting::create_int_array_consumer(
-        reader.getEnvironment().getId(), 
+        reader.getEnvironment(), 
         element->attr(attr).getText()
     );
     return [=](uint slot, ItemStack& stack) {
diff --git a/src/frontend/UiDocument.cpp b/src/frontend/UiDocument.cpp
index 217da699..e241ebcf 100644
--- a/src/frontend/UiDocument.cpp
+++ b/src/frontend/UiDocument.cpp
@@ -10,8 +10,8 @@ UiDocument::UiDocument(
     std::string id, 
     uidocscript script, 
     std::shared_ptr<gui::UINode> root,
-    std::unique_ptr<scripting::Environment> env
-) : id(id), script(script), root(root), env(std::move(env)) {
+    scriptenv env
+) : id(id), script(script), root(root), env(env) {
     gui::UINode::getIndices(root, map);
 }
 
@@ -47,19 +47,19 @@ const uidocscript& UiDocument::getScript() const {
     return script;
 }
 
-int UiDocument::getEnvironment() const {
-    return env->getId();
+scriptenv UiDocument::getEnvironment() const {
+    return env;
 }
 
-std::unique_ptr<UiDocument> UiDocument::read(int penv, std::string name, fs::path file) {
+std::unique_ptr<UiDocument> UiDocument::read(scriptenv penv, std::string name, fs::path file) {
     const std::string text = files::read_string(file);
     auto xmldoc = xml::parse(file.u8string(), text);
 
-    auto env = penv == -1 
-        ? std::make_unique<scripting::Environment>(0) 
+    auto env = penv == nullptr 
+        ? scripting::get_root_environment()
         : scripting::create_doc_environment(penv, name);
 
-    gui::UiXmlReader reader(*env);
+    gui::UiXmlReader reader(env);
     InventoryView::createReaders(reader);
     auto view = reader.readXML(
         file.u8string(), xmldoc->getRoot()
@@ -68,12 +68,12 @@ std::unique_ptr<UiDocument> UiDocument::read(int penv, std::string name, fs::pat
     uidocscript script {};
     auto scriptFile = fs::path(file.u8string()+".lua");
     if (fs::is_regular_file(scriptFile)) {
-        scripting::load_layout_script(env->getId(), name, scriptFile, script);
+        scripting::load_layout_script(env, name, scriptFile, script);
     }
-    return std::make_unique<UiDocument>(name, script, view, std::move(env));
+    return std::make_unique<UiDocument>(name, script, view, env);
 }
 
 std::shared_ptr<gui::UINode> UiDocument::readElement(fs::path file) {
-    auto document = read(-1, file.filename().u8string(), file);
+    auto document = read(nullptr, file.filename().u8string(), file);
     return document->getRoot();
 }
diff --git a/src/frontend/UiDocument.h b/src/frontend/UiDocument.h
index 8fa6dd6c..b71a1747 100644
--- a/src/frontend/UiDocument.h
+++ b/src/frontend/UiDocument.h
@@ -1,7 +1,7 @@
 #ifndef FRONTEND_UI_DOCUMENT_H_
 #define FRONTEND_UI_DOCUMENT_H_
 
-#include "../logic/scripting/Environment.h"
+#include "../typedefs.h"
 
 #include <string>
 #include <memory>
@@ -14,12 +14,7 @@ namespace gui {
     class UINode;
 }
 
-namespace scripting {
-    class Environment;
-}
-
 struct uidocscript {
-    int environment;
     bool onopen : 1;
     bool onclose : 1;
 };
@@ -31,13 +26,13 @@ class UiDocument {
     uidocscript script;
     uinodes_map map;
     std::shared_ptr<gui::UINode> root;
-    std::unique_ptr<scripting::Environment> env;
+    scriptenv env;
 public:
     UiDocument(
         std::string id, 
         uidocscript script, 
         std::shared_ptr<gui::UINode> root, 
-        std::unique_ptr<scripting::Environment> env
+        scriptenv env
     );
 
     void rebuildIndices();
@@ -48,9 +43,9 @@ public:
     const std::shared_ptr<gui::UINode> getRoot() const;
     const std::shared_ptr<gui::UINode> get(const std::string& id) const;
     const uidocscript& getScript() const;
-    int getEnvironment() const;
+    scriptenv getEnvironment() const;
 
-    static std::unique_ptr<UiDocument> read(int env, std::string name, fs::path file);
+    static std::unique_ptr<UiDocument> read(scriptenv parent_env, std::string name, fs::path file);
     static std::shared_ptr<gui::UINode> readElement(fs::path file);
 };
 
diff --git a/src/frontend/menu.cpp b/src/frontend/menu.cpp
index 8797c56a..edd81a63 100644
--- a/src/frontend/menu.cpp
+++ b/src/frontend/menu.cpp
@@ -41,7 +41,7 @@ void menus::create_menus(Engine* engine) {
         auto file = engine->getResPaths()->find("layouts/pages/"+name+".xml");
         auto fullname = "core:pages/"+name;
 
-        auto document = UiDocument::read(0, fullname, file).release();
+        auto document = UiDocument::read(scripting::get_root_environment(), fullname, file).release();
         engine->getAssets()->store(document, fullname);
         scripting::on_ui_open(document, nullptr, glm::ivec3());
         return document->getRoot();
diff --git a/src/frontend/screens.cpp b/src/frontend/screens.cpp
index 9fd0ad4d..5e13a65e 100644
--- a/src/frontend/screens.cpp
+++ b/src/frontend/screens.cpp
@@ -16,7 +16,6 @@
 #include "../logic/LevelController.h"
 #include "../logic/scripting/scripting_hud.h"
 #include "../logic/scripting/scripting.h"
-#include "../logic/scripting/Environment.h"
 #include "../objects/Player.h"
 #include "../physics/Hitbox.h"
 #include "../util/stringutil.h"
@@ -113,7 +112,7 @@ LevelScreen::LevelScreen(Engine* engine, Level* level) : Screen(engine) {
         const ContentPack& info = pack->getInfo();
         fs::path scriptFile = info.folder/fs::path("scripts/hud.lua");
         if (fs::is_regular_file(scriptFile)) {
-            scripting::load_hud_script(pack->getEnvironment()->getId(), info.id, scriptFile);
+            scripting::load_hud_script(pack->getEnvironment(), info.id, scriptFile);
         }
     }
     scripting::on_frontend_init(hud.get());
diff --git a/src/graphics/ui/gui_util.cpp b/src/graphics/ui/gui_util.cpp
index abd63dd1..40a17e88 100644
--- a/src/graphics/ui/gui_util.cpp
+++ b/src/graphics/ui/gui_util.cpp
@@ -6,7 +6,7 @@
 
 #include <glm/glm.hpp>
 
-#include "../../logic/scripting/Environment.h"
+#include "../../logic/scripting/scripting.h"
 #include "../../frontend/locale/langs.h"
 #include "../../util/stringutil.h"
 #include "../../delegates.h"
@@ -32,12 +32,12 @@ std::shared_ptr<Button> guiutil::gotoButton(
     ));
 }
 
-std::shared_ptr<gui::UINode> guiutil::create(const std::string& source, int envid) {
-    scripting::Environment env(envid);
+std::shared_ptr<gui::UINode> guiutil::create(const std::string& source, scriptenv env) {
+    if (env == nullptr) {
+        env = scripting::get_root_environment();
+    }
     UiXmlReader reader(env);
-    auto node = reader.readXML("<string>", source);
-    env.release();
-    return node;
+    return reader.readXML("<string>", source);
 }
 
 void guiutil::alert(GUI* gui, const std::wstring& text, runnable on_hidden) {
diff --git a/src/graphics/ui/gui_util.h b/src/graphics/ui/gui_util.h
index 97ce97cf..6dfe75db 100644
--- a/src/graphics/ui/gui_util.h
+++ b/src/graphics/ui/gui_util.h
@@ -4,6 +4,7 @@
 #include <memory>
 #include <string>
 #include "GUI.h"
+#include "../../typedefs.h"
 #include "../../delegates.h"
 
 namespace gui {
@@ -23,7 +24,7 @@ namespace guiutil {
 
     /// @brief Create element from XML
     /// @param source XML
-    std::shared_ptr<gui::UINode> create(const std::string& source, int env=0);
+    std::shared_ptr<gui::UINode> create(const std::string& source, scriptenv env=0);
 
     void alert(
         gui::GUI* gui, 
diff --git a/src/graphics/ui/gui_xml.cpp b/src/graphics/ui/gui_xml.cpp
index a36175cd..3a985416 100644
--- a/src/graphics/ui/gui_xml.cpp
+++ b/src/graphics/ui/gui_xml.cpp
@@ -13,7 +13,6 @@
 
 #include "../../frontend/locale/langs.h"
 #include "../../logic/scripting/scripting.h"
-#include "../../logic/scripting/Environment.h"
 #include "../../util/stringutil.h"
 #include "../../window/Events.h"
 
@@ -86,7 +85,7 @@ static void _readUINode(UiXmlReader& reader, xml::xmlelement element, UINode& no
     }
     if (element->has("position-func")) {
         auto supplier = scripting::create_vec2_supplier(
-            reader.getEnvironment().getId(),
+            reader.getEnvironment(),
             element->attr("position-func").getText(),
             reader.getFilename()+".lua"
         );
@@ -111,7 +110,7 @@ static void _readUINode(UiXmlReader& reader, xml::xmlelement element, UINode& no
         std::string text = element->attr("onclick").getText();
         if (!text.empty()) {
             auto callback = scripting::create_runnable(
-                reader.getEnvironment().getId(),
+                reader.getEnvironment(),
                 text,
                 reader.getFilename()
             );
@@ -210,7 +209,7 @@ static std::shared_ptr<UINode> readLabel(UiXmlReader& reader, xml::xmlelement el
     }
     if (element->has("supplier")) {
         auto supplier = scripting::create_wstring_supplier(
-            reader.getEnvironment().getId(),
+            reader.getEnvironment(),
             element->attr("supplier").getText(),
             reader.getFilename()
         );
@@ -264,7 +263,7 @@ static std::shared_ptr<UINode> readCheckBox(UiXmlReader& reader, xml::xmlelement
 
     if (element->has("consumer")) {
         auto consumer = scripting::create_bool_consumer(
-            reader.getEnvironment().getId(),
+            reader.getEnvironment(),
             element->attr("consumer").getText(),
             reader.getFilename()
         );
@@ -273,7 +272,7 @@ static std::shared_ptr<UINode> readCheckBox(UiXmlReader& reader, xml::xmlelement
 
     if (element->has("supplier")) {
         auto supplier = scripting::create_bool_supplier(
-            reader.getEnvironment().getId(),
+            reader.getEnvironment(),
             element->attr("supplier").getText(),
             reader.getFilename()
         );
@@ -299,7 +298,7 @@ static std::shared_ptr<UINode> readTextBox(UiXmlReader& reader, xml::xmlelement
     
     if (element->has("consumer")) {
         auto consumer = scripting::create_wstring_consumer(
-            reader.getEnvironment().getId(),
+            reader.getEnvironment(),
             element->attr("consumer").getText(),
             reader.getFilename()
         );
@@ -308,7 +307,7 @@ static std::shared_ptr<UINode> readTextBox(UiXmlReader& reader, xml::xmlelement
 
     if (element->has("supplier")) {
         auto supplier = scripting::create_wstring_supplier(
-            reader.getEnvironment().getId(),
+            reader.getEnvironment(),
             element->attr("supplier").getText(),
             reader.getFilename()
         );
@@ -322,7 +321,7 @@ static std::shared_ptr<UINode> readTextBox(UiXmlReader& reader, xml::xmlelement
     }
     if (element->has("validator")) {
         auto validator  = scripting::create_wstring_validator(
-            reader.getEnvironment().getId(),
+            reader.getEnvironment(),
             element->attr("validator").getText(),
             reader.getFilename()
         );
@@ -348,7 +347,7 @@ static std::shared_ptr<UINode> readTrackBar(UiXmlReader& reader, xml::xmlelement
     _readUINode(reader, element, *bar);
     if (element->has("consumer")) {
         auto consumer = scripting::create_number_consumer(
-            reader.getEnvironment().getId(),
+            reader.getEnvironment(),
             element->attr("consumer").getText(),
             reader.getFilename()
         );
@@ -356,7 +355,7 @@ static std::shared_ptr<UINode> readTrackBar(UiXmlReader& reader, xml::xmlelement
     }
     if (element->has("supplier")) {
         auto supplier = scripting::create_number_supplier(
-            reader.getEnvironment().getId(),
+            reader.getEnvironment(),
             element->attr("supplier").getText(),
             reader.getFilename()
         );
@@ -381,7 +380,7 @@ static std::shared_ptr<UINode> readInputBindBox(UiXmlReader& reader, xml::xmlele
     return bindbox;
 }
 
-UiXmlReader::UiXmlReader(const scripting::Environment& env) : env(env) {
+UiXmlReader::UiXmlReader(const scriptenv& env) : env(env) {
     contextStack.push("");
     add("image", readImage);
     add("label", readLabel);
@@ -460,6 +459,6 @@ const std::string& UiXmlReader::getFilename() const {
     return filename;
 }
 
-const scripting::Environment& UiXmlReader::getEnvironment() const {
+const scriptenv& UiXmlReader::getEnvironment() const {
     return env;
 }
diff --git a/src/graphics/ui/gui_xml.h b/src/graphics/ui/gui_xml.h
index 9b422536..5d666f20 100644
--- a/src/graphics/ui/gui_xml.h
+++ b/src/graphics/ui/gui_xml.h
@@ -9,10 +9,6 @@
 #include "GUI.h"
 #include "../../coders/xml.h"
 
-namespace scripting {
-    class Environment;
-}
-
 namespace gui {
     class UiXmlReader;
 
@@ -23,9 +19,9 @@ namespace gui {
         std::unordered_set<std::string> ignored;
         std::stack<std::string> contextStack;
         std::string filename;
-        const scripting::Environment& env;
+        const scriptenv& env;
     public:
-        UiXmlReader(const scripting::Environment& env);
+        UiXmlReader(const scriptenv& env);
 
         void add(const std::string& tag, uinode_reader reader);
         bool hasReader(const std::string& tag) const;
@@ -56,7 +52,7 @@ namespace gui {
         );
 
         const std::string& getContext() const;
-        const scripting::Environment& getEnvironment() const;
+        const scriptenv& getEnvironment() const;
         const std::string& getFilename() const;
     };
 }
diff --git a/src/logic/scripting/Environment.h b/src/logic/scripting/Environment.h
deleted file mode 100644
index 17a052f8..00000000
--- a/src/logic/scripting/Environment.h
+++ /dev/null
@@ -1,19 +0,0 @@
-#ifndef LOGIC_SCRIPTING_ENVIRONMENT_H_
-#define LOGIC_SCRIPTING_ENVIRONMENT_H_
-
-namespace scripting {
-    /// @brief Lua environment wrapper for automatic deletion
-    class Environment {
-        int env;
-    public:
-        Environment(int env);
-        ~Environment();
-
-        int getId() const;
-
-        // @brief Release namespace control
-        void release();
-    };
-}
-
-#endif // LOGIC_SCRIPTING_ENVIRONMENT_H_
diff --git a/src/logic/scripting/lua/LuaState.cpp b/src/logic/scripting/lua/LuaState.cpp
index a0e478c7..75a58e2e 100644
--- a/src/logic/scripting/lua/LuaState.cpp
+++ b/src/logic/scripting/lua/LuaState.cpp
@@ -348,6 +348,9 @@ int lua::LuaState::createEnvironment(int parent) {
 
 
 void lua::LuaState::removeEnvironment(int id) {
+    if (id == 0) {
+        return;
+    }
     lua_pushnil(L);
     setglobal(envName(id));
 }
diff --git a/src/logic/scripting/lua/libgui.cpp b/src/logic/scripting/lua/libgui.cpp
index 5d00c092..9e3fd889 100644
--- a/src/logic/scripting/lua/libgui.cpp
+++ b/src/logic/scripting/lua/libgui.cpp
@@ -341,7 +341,7 @@ static int l_gui_get_env(lua_State* L) {
     if (doc == nullptr) {
         luaL_error(L, "document '%s' not found", name);
     }
-    lua_getglobal(L, lua::LuaState::envName(doc->getEnvironment()).c_str());
+    lua_getglobal(L, lua::LuaState::envName(*doc->getEnvironment()).c_str());
     return 1;
 }
 
diff --git a/src/logic/scripting/scripting.cpp b/src/logic/scripting/scripting.cpp
index ad8cfa3a..ee816ecf 100644
--- a/src/logic/scripting/scripting.cpp
+++ b/src/logic/scripting/scripting.cpp
@@ -17,7 +17,6 @@
 #include "../../logic/LevelController.h"
 #include "../../frontend/UiDocument.h"
 #include "../../engine.h"
-#include "Environment.h"
 #include "lua/LuaState.h"
 #include "../../util/stringutil.h"
 #include "../../util/timeutil.h"
@@ -38,23 +37,6 @@ const ContentIndices* scripting::indices = nullptr;
 BlocksController* scripting::blocks = nullptr;
 LevelController* scripting::controller = nullptr;
 
-Environment::Environment(int env) : env(env) {
-}
-
-Environment::~Environment() {
-    if (env) {
-        state->removeEnvironment(env);
-    }
-}
-
-int Environment::getId() const {
-    return env;
-}
-
-void Environment::release() {
-    env = 0;
-}
-
 void load_script(fs::path name) {
     auto paths = scripting::engine->getPaths();
     fs::path file = paths->getResources()/fs::path("scripts")/name;
@@ -71,11 +53,11 @@ void scripting::initialize(Engine* engine) {
     load_script(fs::path("stdlib.lua"));
 }
 
-std::unique_ptr<Environment> scripting::create_environment(int parent) {
-    return std::make_unique<Environment>(state->createEnvironment(parent));
+scriptenv scripting::get_root_environment() {
+    return std::make_shared<int>(0);
 }
 
-std::unique_ptr<Environment> scripting::create_pack_environment(const ContentPack& pack) {
+scriptenv scripting::create_pack_environment(const ContentPack& pack) {
     int id = state->createEnvironment(0);
     state->pushenv(id);
     state->pushvalue(-1);
@@ -83,11 +65,13 @@ std::unique_ptr<Environment> scripting::create_pack_environment(const ContentPac
     state->pushstring(pack.id);
     state->setfield("PACK_ID");
     state->pop();
-    return std::make_unique<Environment>(id);
+    return std::shared_ptr<int>(new int(id), [=](int* id) {
+        state->removeEnvironment(*id);
+    });
 }
 
-std::unique_ptr<Environment> scripting::create_doc_environment(int parent, const std::string& name) {
-    int id = state->createEnvironment(parent);
+scriptenv scripting::create_doc_environment(scriptenv parent, const std::string& name) {
+    int id = state->createEnvironment(*parent);
     state->pushenv(id);
     state->pushvalue(-1);
     state->setfield("DOC_ENV");
@@ -104,7 +88,9 @@ std::unique_ptr<Environment> scripting::create_doc_environment(int parent, const
         state->pop();
     }
     state->pop();
-    return std::make_unique<Environment>(id);
+    return std::shared_ptr<int>(new int(id), [=](int* id) {
+        state->removeEnvironment(*id);
+    });
 }
 
 void scripting::process_post_runnables() {
@@ -286,7 +272,8 @@ bool scripting::emit_event(const std::string &name, std::function<int(lua::LuaSt
     return result;
 }
 
-void scripting::load_block_script(int env, std::string prefix, fs::path file, block_funcs_set& funcsset) {
+void scripting::load_block_script(scriptenv senv, std::string prefix, fs::path file, block_funcs_set& funcsset) {
+    int env = *senv;
     std::string src = files::read_string(file);
     logger.info() << "script (block) " << file.u8string();
     state->execute(env, src, file.u8string());
@@ -299,7 +286,8 @@ void scripting::load_block_script(int env, std::string prefix, fs::path file, bl
     funcsset.onblockstick = register_event(env, "on_blocks_tick", prefix+".blockstick");
 }
 
-void scripting::load_item_script(int env, std::string prefix, fs::path file, item_funcs_set& funcsset) {
+void scripting::load_item_script(scriptenv senv, std::string prefix, fs::path file, item_funcs_set& funcsset) {
+    int env = *senv;
     std::string src = files::read_string(file);
     logger.info() << "script (item) " << file.u8string();
     state->execute(env, src, file.u8string());
@@ -310,7 +298,9 @@ void scripting::load_item_script(int env, std::string prefix, fs::path file, ite
     funcsset.on_block_break_by = register_event(env, "on_block_break_by", prefix+".blockbreakby");
 }
 
-void scripting::load_world_script(int env, std::string prefix, fs::path file) {
+void scripting::load_world_script(scriptenv senv, std::string prefix, fs::path file) {
+    int env = *senv;
+
     std::string src = files::read_string(file);
     logger.info() << "loading world script for " << prefix;
 
@@ -324,11 +314,12 @@ void scripting::load_world_script(int env, std::string prefix, fs::path file) {
     register_event(env, "on_world_quit", prefix+".worldquit");
 }
 
-void scripting::load_layout_script(int env, std::string prefix, fs::path file, uidocscript& script) {
+void scripting::load_layout_script(scriptenv senv, std::string prefix, fs::path file, uidocscript& script) {
+    int env = *senv;
+
     std::string src = files::read_string(file);
     logger.info() << "loading script " << file.u8string();
 
-    script.environment = env;
     state->loadbuffer(env, src, file.u8string());
     state->callNoThrow(0);
     script.onopen = register_event(env, "on_open", prefix+".open");
diff --git a/src/logic/scripting/scripting.h b/src/logic/scripting/scripting.h
index 2e7094b1..cc3e6e4d 100644
--- a/src/logic/scripting/scripting.h
+++ b/src/logic/scripting/scripting.h
@@ -2,6 +2,7 @@
 #include <filesystem>
 #include <glm/glm.hpp>
 
+#include "../../typedefs.h"
 #include "../../delegates.h"
 
 #include "lua/LuaState.h"
@@ -33,8 +34,6 @@ namespace scripting {
     extern BlocksController* blocks;
     extern LevelController* controller;
 
-    class Environment;
-
     void initialize(Engine* engine);
 
     extern bool register_event(int env, const std::string& name, const std::string& id);
@@ -42,9 +41,9 @@ namespace scripting {
     static inline int noargs(lua::LuaState *) { return 0; }
     extern bool emit_event(const std::string& name, std::function<int(lua::LuaState* state)> args = noargs);
 
-    std::unique_ptr<Environment> create_environment(int parent=0);
-    std::unique_ptr<Environment> create_pack_environment(const ContentPack& pack);
-    std::unique_ptr<Environment> create_doc_environment(int parent, const std::string& name);
+    scriptenv get_root_environment();
+    scriptenv create_pack_environment(const ContentPack& pack);
+    scriptenv create_doc_environment(scriptenv parent, const std::string& name);
 
     void process_post_runnables();
 
@@ -78,31 +77,31 @@ namespace scripting {
     void on_ui_close(UiDocument* layout, Inventory* inventory);
 
     /// @brief Load script associated with a Block
-    /// @param env environment id
+    /// @param env environment
     /// @param prefix pack id
     /// @param file item script file
     /// @param funcsset block callbacks set
-    void load_block_script(int env, std::string prefix, fs::path file, block_funcs_set& funcsset);
+    void load_block_script(scriptenv env, std::string prefix, fs::path file, block_funcs_set& funcsset);
 
     /// @brief Load script associated with an Item
-    /// @param env environment id
+    /// @param env environment
     /// @param prefix pack id
     /// @param file item script file
     /// @param funcsset item callbacks set
-    void load_item_script(int env, std::string prefix, fs::path file, item_funcs_set& funcsset);
+    void load_item_script(scriptenv env, std::string prefix, fs::path file, item_funcs_set& funcsset);
     
     /// @brief Load package-specific world script 
-    /// @param env environment id
+    /// @param env environment
     /// @param packid content-pack id
     /// @param file script file path
-    void load_world_script(int env, std::string packid, fs::path file);
+    void load_world_script(scriptenv env, std::string packid, fs::path file);
 
     /// @brief Load script associated with an UiDocument
-    /// @param env environment id
+    /// @param env environment
     /// @param prefix pack id
     /// @param file item script file
     /// @param script document script info
-    void load_layout_script(int env, std::string prefix, fs::path file, uidocscript& script);
+    void load_layout_script(scriptenv env, std::string prefix, fs::path file, uidocscript& script);
 
     /// @brief Finalize lua state. Using scripting after will lead to Lua panic
     void close();
diff --git a/src/logic/scripting/scripting_functional.cpp b/src/logic/scripting/scripting_functional.cpp
index 2a9bb81c..a68eab4d 100644
--- a/src/logic/scripting/scripting_functional.cpp
+++ b/src/logic/scripting/scripting_functional.cpp
@@ -12,13 +12,13 @@ namespace scripting {
 using namespace scripting;
 
 runnable scripting::create_runnable(
-    int env,
+    const scriptenv& env,
     const std::string& src,
     const std::string& file
 ) {
     return [=](){
         try {
-            state->execute(env, src, file);
+            state->execute(*env, src, file);
         } catch (const lua::luaerror& err) {
             std::cerr << err.what() << std::endl;
         }
@@ -26,12 +26,12 @@ runnable scripting::create_runnable(
 }
 
 static bool processCallback(
-    int env,
+    const scriptenv& env,
     const std::string& src,
     const std::string& file
 ) {
     try {
-        return state->eval(env, src, file) != 0;
+        return state->eval(*env, src, file) != 0;
     } catch (lua::luaerror& err) {
         std::cerr << err.what() << std::endl;
         return false;
@@ -39,7 +39,7 @@ static bool processCallback(
 }
 
 wstringconsumer scripting::create_wstring_consumer(
-    int env,
+    const scriptenv& env,
     const std::string& src,
     const std::string& file
 ) {
@@ -52,7 +52,7 @@ wstringconsumer scripting::create_wstring_consumer(
 }
 
 wstringsupplier scripting::create_wstring_supplier(
-    int env,
+    const scriptenv& env,
     const std::string& src,
     const std::string& file
 ) {
@@ -69,7 +69,7 @@ wstringsupplier scripting::create_wstring_supplier(
 }
 
 wstringchecker scripting::create_wstring_validator(
-    int env,
+    const scriptenv& env,
     const std::string& src,
     const std::string& file
 ) {
@@ -84,7 +84,7 @@ wstringchecker scripting::create_wstring_validator(
 }
 
 boolconsumer scripting::create_bool_consumer(
-    int env,
+    const scriptenv& env,
     const std::string& src,
     const std::string& file
 ) {
@@ -97,7 +97,7 @@ boolconsumer scripting::create_bool_consumer(
 }
 
 boolsupplier scripting::create_bool_supplier(
-    int env,
+    const scriptenv& env,
     const std::string& src,
     const std::string& file
 ) {
@@ -114,7 +114,7 @@ boolsupplier scripting::create_bool_supplier(
 }
 
 doubleconsumer scripting::create_number_consumer(
-    int env,
+    const scriptenv& env,
     const std::string& src,
     const std::string& file
 ) {
@@ -127,7 +127,7 @@ doubleconsumer scripting::create_number_consumer(
 }
 
 doublesupplier scripting::create_number_supplier(
-    int env,
+    const scriptenv& env,
     const std::string& src,
     const std::string& file
 ) {
@@ -144,7 +144,7 @@ doublesupplier scripting::create_number_supplier(
 }
 
 int_array_consumer scripting::create_int_array_consumer(
-    int env,
+    const scriptenv& env,
     const std::string& src, 
     const std::string& file
 ) {
@@ -159,7 +159,7 @@ int_array_consumer scripting::create_int_array_consumer(
 }
 
 vec2supplier scripting::create_vec2_supplier(
-    int env,
+    const scriptenv& env,
     const std::string& src, 
     const std::string& file
 ) {
diff --git a/src/logic/scripting/scripting_functional.h b/src/logic/scripting/scripting_functional.h
index 57c3ab3a..add73822 100644
--- a/src/logic/scripting/scripting_functional.h
+++ b/src/logic/scripting/scripting_functional.h
@@ -3,65 +3,66 @@
 
 #include <glm/glm.hpp>
 #include <string>
+#include "../../typedefs.h"
 #include "../../delegates.h"
 
 namespace scripting {
     runnable create_runnable(
-        int env,
+        const scriptenv& env,
         const std::string& src,
         const std::string& file="<string>"
     );
     
     wstringconsumer create_wstring_consumer(
-        int env,
+        const scriptenv& env,
         const std::string& src,
         const std::string& file="<string>"
     );
 
     wstringsupplier create_wstring_supplier(
-        int env,
+        const scriptenv& env,
         const std::string& src,
         const std::string& file="<string>"
     );
 
     wstringchecker create_wstring_validator(
-        int env,
+        const scriptenv& env,
         const std::string& src,
         const std::string& file="<string>"
     );
 
     boolconsumer create_bool_consumer(
-        int env,
+        const scriptenv& env,
         const std::string& src,
         const std::string& file="<string>"
     );
 
     boolsupplier create_bool_supplier(
-        int env,
+        const scriptenv& env,
         const std::string& src,
         const std::string& file="<string>"
     );
 
     doubleconsumer create_number_consumer(
-        int env,
+        const scriptenv& env,
         const std::string& src,
         const std::string& file="<string>"
     );
 
     doublesupplier create_number_supplier(
-        int env,
+        const scriptenv& env,
         const std::string& src,
         const std::string& file="<string>"
     );
 
     int_array_consumer create_int_array_consumer(
-        int env,
+        const scriptenv& env,
         const std::string& src, 
         const std::string& file="<string>"
     );
     
     vec2supplier create_vec2_supplier(
-        int env,
+        const scriptenv& env,
         const std::string& src, 
         const std::string& file="<string>"
     );
diff --git a/src/logic/scripting/scripting_hud.cpp b/src/logic/scripting/scripting_hud.cpp
index e472a771..e583b00e 100644
--- a/src/logic/scripting/scripting_hud.cpp
+++ b/src/logic/scripting/scripting_hud.cpp
@@ -42,7 +42,8 @@ void scripting::on_frontend_close() {
     scripting::hud = nullptr;
 }
 
-void scripting::load_hud_script(int env, std::string packid, fs::path file) {
+void scripting::load_hud_script(scriptenv senv, std::string packid, fs::path file) {
+    int env = *senv;
     std::string src = files::read_string(file);
     logger.info() << "loading script " << file.u8string();
 
diff --git a/src/logic/scripting/scripting_hud.h b/src/logic/scripting/scripting_hud.h
index 2b64fdb1..0add6354 100644
--- a/src/logic/scripting/scripting_hud.h
+++ b/src/logic/scripting/scripting_hud.h
@@ -1,6 +1,8 @@
 #ifndef LOGIC_SCRIPTING_SCRIPTING_HUD_H_
 #define LOGIC_SCRIPTING_SCRIPTING_HUD_H_
 
+#include "../../typedefs.h"
+
 #include <string>
 #include <filesystem>
 
@@ -20,7 +22,7 @@ namespace scripting {
      * @param packid content-pack id
      * @param file script file path
      */
-    void load_hud_script(int env, std::string packid, fs::path file);
+    void load_hud_script(scriptenv env, std::string packid, fs::path file);
 }
 
 #endif // LOGIC_SCRIPTING_SCRIPTING_HUD_H_
diff --git a/src/typedefs.h b/src/typedefs.h
index 2e015666..3f17f60e 100644
--- a/src/typedefs.h
+++ b/src/typedefs.h
@@ -1,10 +1,12 @@
-#ifndef VOX_TYPEDEFS_H
-#define VOX_TYPEDEFS_H
+#ifndef TYPEDEFS_H_
+#define TYPEDEFS_H_
 
+#include <memory>
 #include <stdlib.h>
 #include <stdint.h>
 #include <variant>
 
+using scriptenv = std::shared_ptr<int>;
 
 /// @brief dynamic integer type (64 bit signed integer)
 using integer_t = int64_t;
@@ -26,4 +28,4 @@ using itemcount_t = uint32_t;
 using blockstate_t = uint16_t;
 using light_t = uint16_t;
 
-#endif
+#endif // TYPEDEFS_H_