Merge branch 'MihailRis:main' into main

2025-01-27 16:35:11 +03:00
parent d2ceb991b9 dece2e25bc
commit bec7e59e33
69 changed files with 639 additions and 285 deletions
@@ -32,7 +32,7 @@ jobs:
          # install EnTT
          git clone https://github.com/skypjack/entt.git
          cd entt/build
-          cmake -DCMAKE_BUILD_TYPE=Release ..
+          cmake -DCMAKE_BUILD_TYPE=Release -DENTT_INSTALL=on ..
          sudo make install
          cd ../..
      - name: Configure
@@ -46,7 +46,7 @@ jobs:
          # install EnTT
          git clone https://github.com/skypjack/entt.git
          cd entt/build
-          cmake -DCMAKE_BUILD_TYPE=Release ..
+          cmake -DCMAKE_BUILD_TYPE=Release -DENTT_INSTALL=on ..
          sudo make install
          cd ../..

@@ -1,96 +1,153 @@
-# 0.25 - 2024.12.01
+# 0.26 - 2025.01.27

-[Documentation](https://github.com/MihailRis/VoxelEngine-Cpp/tree/release-0.25/doc/en/main-page.md) for 0.25
+[Documentation](https://github.com/MihailRis/VoxelEngine-Cpp/tree/release-0.26/doc/en/main-page.md) for 0.26

 Table of contents:

 - [Added](#added)
+    - [Changes](#changes)
    - [Functions](#functions)
 - [Fixes](#fixes)

 ## Added

- 3dtext
- blockwraps
- network (http requests and sockets)
+- headless mode `--headless`
+- script execution mode `--headless --script filename`
+- test execution mode `--headless --test filename`
+- vctest console application
 - libraries:
-	- base64
-	- gfx.text3d
-	- gfx.blockwraps
-    - network
+    - app
+    - byteutil
+- in-game chat
+- text markup: Markdown
+- syntax-highlighting: Lua
+- http post requests
+- `Scripts` menu page for app scripts
+- binding `hud.chat`
+- user-defined console.submit
 - events:
-    - on_replaced
-    - on_block_replaced
-    - on_player_tick
- structures 'lowering' property
- add 'hint' property to textbox
- add 'taking' and 'placing' properties to slot and slotsgrid
- add 'scroll-step' property to container
- add 'line-numbers' and 'text-color' to textbox
- modules:
-    - base:util
- uinode property 'id'
- block.materials table
- block.properties table
- item.properties table
- add version to world info table
- add 'sizeSpread' particles property
- add user properties
+    - on_chunk_present
+    - on_chunk_remove
+    - on_inventory_open
+    - on_inventory_closed
+- [canvas](https://github.com/MihailRis/VoxelEngine-Cpp/pull/444) ui node
+- settings:
+    - `graphics.dense-render`
+- block properties:
+    - `culling`
+- particles properties:
+    - `angle_spread`
+    - `min_angular_vel`, `max_angular_vel`
+- bytearray support in serializers
+- ui properties:
+    - uinode: `cursor`
+    - textbox: `markup`, `syntax`, `text-color`
+    - label: `markup`
+- base pack:
+    - add transparent leaves render mode
+    - add falling leaves particles
+    - 'states' parameter in base:falling_block
+    - added/updated sounds
+- nameless worlds
+- SIGTERM handler
+- project:
+    - clang Windows workflow
+    - engine tests
+
+### Changes
+
+- moved `devtools.console` binding handler to Lua
+- move `key:escape` binding handler to Lua
+- upgrade dead emitters garbage collection
+- reserved player entity ids: `0` - none (example: dead), `-1` - auto (spawns new one)
+- input.add_callback("key:name") support and add optional `owner` argument

 ### Functions

- player.is_infinite_items
- player.set_infinite_items
- player.is_instant_destruction
- player.set_instant_destruction
- player.get_name
- player.set_name
- hud.open
- base64.encode
- base64.decode
- utf8.escape
- string.escape
- textbox:lineAt
- textbox:linePos
- network.get
- network.get_binary
- network.tcp_connect
- network.tcp_open
- network.get_total_upload
- network.get_total_download
- gfx.text3d.show
- gfx.text3d.hide
- gfx.text3d.get_text
- gfx.text3d.set_text
- gfx.text3d.get_pos
- gfx.text3d.set_pos
- gfx.text3d.get_axis_x
- gfx.text3d.set_axis_x
- gfx.text3d.get_axis_y
- gfx.text3d.set_axis_y
- gfx.text3d.set_rotation
- gfx.text3d.update_settings
+- app.tick
+- app.sleep
+- app.sleep_until
+- app.new_world
+- app.open_world
+- app.save_world
+- app.close_world
+- app.reopen_world
+- app.delete_world
+- app.config_packs
+- app.reconfig_packs
+- app.get_setting
+- app.set_setting
+- app.get_version
+- app.get_setting_info
+- app.load_content
+- app.reset_content
+- app.is_content_loaded
+- app.quit
+- entity:get_player
+- start_coroutine
+- gui.clear_markup
+- gui.escape_markup
+- gui.alert
+- gui.confirm
+- gui.load_document
+- console.get
+- world.get_chunk_data
+- world.set_chunk_data
+- world.save_chunk_data
+- world.count_chunks
+- player.create
+- player.delete
+- player.is_suspended
+- player.set_suspended
+- player.is_loaded_chunks
+- player.set_loading_chunks
+- network.post
+- table.shuffle
+- table.deep_copy
+- math.normalize
+- math.round
+- byteutil.pack
+- byteutil.unpack
+- file.name
+- file.stem
+- file.ext
+- file.prefix
+- hud.set_allow_pause
+
+Methods:
+- uinode:reposition
+- socket:available
+
+New overloads:
+- block.get_X, block.get_Y, block.get_Z
+- player.get_rot
+- Bytearray:append

 ## Fixes
-
- [fix translucent blocks render](https://github.com/MihailRis/VoxelEngine-Cpp/pull/370)
- [fix blocks selection with semi-transparent blocks](https://github.com/MihailRis/VoxelEngine-Cpp/commit/171cbb48d099032d7e78c51a46c374104f96f0d1)
- [fix: commands repository not reset before world open](https://github.com/MihailRis/VoxelEngine-Cpp/commit/1a00a91b604399f3108aa995422d371e573e650b)
- [mip-mapping related fixes](https://github.com/MihailRis/VoxelEngine-Cpp/commit/d9277e1b31714632bd7f5f601b8362a9e7cb8819)
- [fix disabled slots display](https://github.com/MihailRis/VoxelEngine-Cpp/commit/e8ee3e04b1398a3ada8445591267525304410571)
- [fix attack](https://github.com/MihailRis/VoxelEngine-Cpp/commit/bc17abc8b3ee7ff9027f7e3c375ca0330bb8e7bc)
- [fix: commands repository not reset before world open](https://github.com/MihailRis/VoxelEngine-Cpp/commit/1a00a91b604399f3108aa995422d371e573e650b)
- [fix stdlib.lua](https://github.com/MihailRis/VoxelEngine-Cpp/commit/6ec33ab98c78523eaececf40f113f2323d25a33a)
- [fix file.write_bytes](https://github.com/MihailRis/VoxelEngine-Cpp/commit/0fec17a8b69ac81255b77022f3af5addf8fcc8f8)
- [fix World::nextInventoryId](https://github.com/MihailRis/VoxelEngine-Cpp/commit/371fdaedcef2c163edd226160f388068b2bf5e83)
- [fix block inventory unbinding](https://github.com/MihailRis/VoxelEngine-Cpp/commit/6f6c2a916afd6b9b79221111fc72b1a86109be13)
- [fix xml text escapes handling](https://github.com/MihailRis/VoxelEngine-Cpp/commit/53c54dc91d132c221ff5fea2f7e9fb4568db9a0f)
- [fix `\'` escape parsing](https://github.com/MihailRis/VoxelEngine-Cpp/commit/2bc6cbda2e809b14fa6cffe09161b53c1636675f)
- [fix crosshair look](https://github.com/MihailRis/VoxelEngine-Cpp/commit/e034bda477c35efe96548e78ecc722966a7a2197)
- [fix: actual block inventory size not updating on inventory-size property update](https://github.com/MihailRis/VoxelEngine-Cpp/commit/1ba5b0ce33103e539ccb199ee1cd52095e286a1f)
- [fix falling block hitbox](https://github.com/MihailRis/VoxelEngine-Cpp/commit/352ef6485a4b796d1cdc8dd0e00ab1a1d72a2c0a)
- [fix console position](https://github.com/MihailRis/VoxelEngine-Cpp/commit/3ea213e8d3cee7be55ec39ffb18dc557dec7557b)
- [fix: fatal error on pack removal when no world open](https://github.com/MihailRis/VoxelEngine-Cpp/commit/78d5ab02c2ba8a3d05cf5639eb10a49c9ca14ec3)
- [fix custom model lighting](https://github.com/MihailRis/VoxelEngine-Cpp/commit/a333cadfcaeb485a30833343d55faf01b28a5c5f)
- [fix: emitter does not skip particles](https://github.com/MihailRis/VoxelEngine-Cpp/commit/983e516fb4ebc1f2def592f2b7f3195d968deed2)
- [fix old custom models render](https://github.com/MihailRis/VoxelEngine-Cpp/commit/82733d38011b52a426cb74560521949c1cd43cc1)
+- [fix on_block_interact & fix segfault after engine finished](https://github.com/MihailRis/VoxelEngine-Cpp/commit/d1f92c21d0bbdf2df0eb3b31c5637bdf7110444c)
+- [fix item.properties](https://github.com/MihailRis/VoxelEngine-Cpp/commit/92fb19ba5e2307fdbcbf5d0e55f9c0712be45f72)
+- [fix base:bazalt durability](https://github.com/MihailRis/VoxelEngine-Cpp/commit/a036c5e383135dc0f9b086e244188d1ceb3f0bf2)
+- [fix camera-related bugs](https://github.com/MihailRis/VoxelEngine-Cpp/commit/0d071ab0141edbf087f3ec03505792740023c01e)
+- [fix: grabbed item is deleted on inventory close](https://github.com/MihailRis/VoxelEngine-Cpp/commit/2787f2fc5495004f6029644ed5221f3abfc0c68f)
+- [fix block overriding](https://github.com/MihailRis/VoxelEngine-Cpp/commit/cda34e3975a42696ea31a1b0018731e746cd13bb)
+- [fix faces culling when 'light-passing' is false](https://github.com/MihailRis/VoxelEngine-Cpp/commit/954724c8378da525fc7349c018e9351c5bdfdf8f)
+- [fix particles lighting](https://github.com/MihailRis/VoxelEngine-Cpp/commit/6be640458d6b4ae46866b342ca0f26e561ead125)
+- [fix non-skipping particles](https://github.com/MihailRis/VoxelEngine-Cpp/pull/421/commits/f1c7317c5ab2a148e5188e091cd1aa3490dc8b4d)
+- [fix content stats](https://github.com/MihailRis/VoxelEngine-Cpp/commit/97eef3ef1900157a9648bade8e06b203b99ee6f6)
+- [fix byte manipulation functions](https://github.com/MihailRis/VoxelEngine-Cpp/commit/9490d1f7eacb00f56112dfdd1ea12bb9c3ca528d)
+- [fix error handling in events and runnables](https://github.com/MihailRis/VoxelEngine-Cpp/commit/03a3062940ebfc4e8f0b3efc5930c71f8d07b604)
+- [fix small dumb legacy memory leak](https://github.com/MihailRis/VoxelEngine-Cpp/commit/4d0b9f049b79322959e4aefd95eedc665e87d087)
+- [fix grass lighting](https://github.com/MihailRis/VoxelEngine-Cpp/commit/9d7816a286fb3a7269b5220502354720e4d2726b)
+- [small fixes in translation.](https://github.com/MihailRis/VoxelEngine-Cpp/commit/d25452784d68be19821dc917ad15bc0a92d81bd9)
+- [fix errors handling in event handlers](https://github.com/MihailRis/VoxelEngine-Cpp/commit/f62fc5a039dca70219fb2b38f61fc53a2542adf7)
+- [fix lua stack manipulations](https://github.com/MihailRis/VoxelEngine-Cpp/commit/e7555448cf0df86995b40d67fa58de1ca78f8105)
+- [fix lua::create_lambda](https://github.com/MihailRis/VoxelEngine-Cpp/commit/40cdebb175014736e35bc31ecc93ae72fb00a6e9)
+- [fix some UB](https://github.com/MihailRis/VoxelEngine-Cpp/commit/b5999fe36420d116674abc353ed3dad739ac5f70)
+- [fix rigidbody:is_enabled](https://github.com/MihailRis/VoxelEngine-Cpp/commit/2adfbdb19226b2685848131073a56b354706433d)
+- [fix panel elements removal](https://github.com/MihailRis/VoxelEngine-Cpp/commit/c6951e09651149463528bdffbc2cba4ea41de4a4)
+- [fix infinite block fields conversion requests](https://github.com/MihailRis/VoxelEngine-Cpp/commit/0494db91872abff500cfc153a32035ee3f2745ae)
+- [fix data_buffer:put_number](https://github.com/MihailRis/VoxelEngine-Cpp/commit/e247902cc6ffdaa6beab391fcfdaea7f021ab063)
+- [fix textbox horizontal scroll & fix console log width](https://github.com/MihailRis/VoxelEngine-Cpp/commit/13fde2116d095b9393c4f5804ba23071e5f56ad6)
+- [fix is_array](https://github.com/MihailRis/VoxelEngine-Cpp/pull/420)
+- [fix neighbour chunk update](https://github.com/MihailRis/VoxelEngine-Cpp/pull/404)
+- [fix lamp material](https://github.com/MihailRis/VoxelEngine-Cpp/commit/57356e1d64d6d9d7e8d59b078543b290e998ad00)
@@ -63,7 +63,7 @@ else()
 endif()

 if(CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
-    set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -no-pie -lstdc++fs")
+    set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -no-pie")
 endif()

 if(WIN32)
@@ -3,7 +3,7 @@
 ## Latest release

 - [Download](https://github.com/MihailRis/VoxelEngine-Cpp/releases/latest) | [Скачать](https://github.com/MihailRis/VoxelEngine-Cpp/releases/latest)
- [Documentation](https://github.com/MihailRis/VoxelEngine-Cpp/blob/release-0.25/doc/en/main-page.md) | [Документация](https://github.com/MihailRis/VoxelEngine-Cpp/blob/release-0.25/doc/ru/main-page.md)
+- [Documentation](https://github.com/MihailRis/VoxelEngine-Cpp/blob/release-0.26/doc/en/main-page.md) | [Документация](https://github.com/MihailRis/VoxelEngine-Cpp/blob/release-0.26/doc/ru/main-page.md)

 ## Build project in Linux

@@ -14,7 +14,7 @@
 ```sh
 git clone https://github.com/skypjack/entt.git
 cd entt/build
-cmake -DCMAKE_BUILD_TYPE=Release ..
+cmake -DCMAKE_BUILD_TYPE=Release -DENTT_INSTALL=on ..
 sudo make install
 ```

@@ -2,6 +2,13 @@

 To work with the command interpreter, use the **console** library.

+When sending a command via the standard console (core:console layout):
+1. the `allow-cheats` rule is checked
+2. the `player`, `pos.x|y|z`, `entity.id`, `entity.selected` variables are automatically set.
+3. the command handler is called - console.submit or the default one.
+
+The default handler calls console.execute, passing the result to the console.log call.
+
 ## Commands creation

 To create a console command, use the following function:
@@ -1,8 +1,6 @@
 # Documentation

-Documentation for in-development version 0.26.
-
-[Documentation for stable release 0.25.x.](https://github.com/MihailRis/VoxelEngine-Cpp/blob/release-0.25/doc/en/main-page.md)
+Documentation for release 0.26.

 ## Sections

@@ -62,6 +62,17 @@ gui.escape_markup(

 Escapes markup in text.

+```lua
+gui.alert(
+    -- message (not automatically translated, use gui.str(...))
+    message: str,
+    -- function called on close
+    on_ok: function() -> nil
+)
+```
+
+Displays a message box. **Non-blocking**.
+
 ```lua
 gui.confirm(
    -- message (does not translate automatically, use gui.str(...))
@@ -78,7 +89,7 @@ gui.confirm(
 )
 ```

-Requests confirmation from the user for an action. **Does not** stop code execution.
+Requests confirmation from the user for an action. **Non-blocking**.

 ```lua
 gui.load_document(
@@ -96,6 +96,15 @@ player.get_spawnpoint(playerid: int) -> number, number, number

 Spawn point setter and getter

+```lua
+player.is_suspended(pid: int) -> bool
+player.set_suspended(pid: int, suspended: bool)
+```
+
+Setter and getter for the player's suspended status.
+
+When suspended, the entity is deleted and the player is disabled from the world simulation.
+
 ```lua
 player.set_name(playerid: int, name: str)
 player.get_name(playerid: int) -> str
@@ -18,7 +18,7 @@ Creates a rule. If a handler is specified, returns the id for deletion.
 > Rules that have not been created can be used, but resetting via rules.reset will result in setting the value to nil.

 ```lua
-    rules.listen(
+rules.listen(
    -- rule name
    name: str,
    -- value change handler function
@@ -49,10 +49,11 @@ world.is_night() -> bool
 world.count_chunks() -> int

 -- Returns the compressed chunk data to send.
+-- If the chunk is not loaded, returns the saved data.
 -- Currently includes:
 -- 1. Voxel data (id and state)
 -- 2. Voxel metadata (fields)
-world.get_chunk_data(x: int, z: int) -> Bytearray
+world.get_chunk_data(x: int, z: int) -> Bytearray or nil

 -- Modifies the chunk based on the compressed data.
 -- Returns true if the chunk exists.
@@ -61,4 +62,12 @@ world.set_chunk_data(
    -- compressed chunk data
    data: Bytearray
 ) -> bool
+
+-- Saves chunk data to region.
+-- Changes will be written to file only on world save.
+world.save_chunk_data(
+    x: int, z: int,
+    -- compressed chunk data
+    data: Bytearray
+)
 ```
@@ -26,6 +26,9 @@ entity:get_uid() -> int
 entity:get_component(name: str) -> component or nil
 -- Checks for the presence of a component by name
 entity:has_component(name: str) -> bool
+
+-- Enables/disables the component
+entity:set_enabled(name: str, enable: bool)
 ```

 ## Built-in components
@@ -2,6 +2,13 @@

 Для работы с командным интерпретатором предоставляется библиотека **console**.

+При отправке команды через стандартную консоль (макет core:console):
+1. проверяется правило `allow-cheats`
+2. автоматически устанавливаются переменные `player`, `pos.x|y|z`, `entity.id`, `entity.selected`.
+3. вызывается обработчик команд - console.submit или по-умолчанию.
+
+Обработчик по-умолчанию вызывает console.execute, передавая результат в вызов console.log.
+
 ## Создание команд

 Для создания команды консоли используется следующая функция:
@@ -1,8 +1,6 @@
 # Документация

-Документация разрабатываемой версии 0.26.
-
-[Документация стабильной версии 0.25.x.](https://github.com/MihailRis/VoxelEngine-Cpp/blob/release-0.25/doc/ru/main-page.md)
+Документация версии 0.26.

 ## Разделы

@@ -59,6 +59,17 @@ gui.escape_markup(

 Экранирует разметку в тексте.

+```lua
+gui.alert(
+    -- сообщение (не переводится автоматически, используйте gui.str(...))
+    message: str,
+    -- функция, вызываемая при закрытии
+    on_ok: function() -> nil
+)
+```
+
+Выводит окно с сообщением. **Не** останавливает выполнение кода.
+
 ```lua
 gui.confirm(
    -- сообщение (не переводится автоматически, используйте gui.str(...))
@@ -96,6 +96,15 @@ player.get_spawnpoint(playerid: int) -> number, number, number

 Сеттер и геттер точки спавна игрока

+```lua
+player.is_suspended(pid: int) -> bool
+player.set_suspended(pid: int, suspended: bool)
+```
+
+Сеттер и геттер статуса "заморозки" игрока.
+
+При "заморозке" удаляется сущность, а игрок выключается из симуляции мира.
+
 ```lua
 player.set_name(playerid: int, name: str) 
 player.get_name(playerid: int) -> str
@@ -48,10 +48,11 @@ world.is_night() -> bool
 world.count_chunks() -> int

 -- Возвращает сжатые данные чанка для отправки.
+-- Если чанк не загружен, возвращает сохранённые данные.
 -- На данный момент включает:
 -- 1. Данные вокселей (id и состояние)
 -- 2. Метаданные (поля) вокселей
-world.get_chunk_data(x: int, z: int) -> Bytearray
+world.get_chunk_data(x: int, z: int) -> Bytearray или nil

 -- Изменяет чанк на основе сжатых данных.
 -- Возвращает true если чанк существует.
@@ -60,4 +61,12 @@ world.set_chunk_data(
    -- сжатые данные чанка
    data: Bytearray
 ) -> bool
+
+-- Сохраняет данные чанка в регион.
+-- Изменения будет записаны в файл только после сохранения мира.
+world.save_chunk_data(
+    x: int, z: int,
+    -- сжатые данные чанка
+    data: Bytearray
+)
 ```
@@ -26,6 +26,9 @@ entity:get_uid() -> int
 entity:get_component(name: str) -> компонент или nil
 -- Проверяет наличие компонента по имени
 entity:has_component(name: str) -> bool
+
+-- Включает/выключает компонент по имени
+entity:set_enabled(name: str, enable: bool)
 ```

 ## Встроенные компоненты
@@ -0,0 +1,5 @@
+{
+    "steps-sound": "steps/snow",
+    "place-sound": "blocks/snow_place",
+    "break-sound": "blocks/snow_break"
+}
@@ -2,5 +2,6 @@
    "texture": "lamp",
    "emission": [15, 14, 13],
    "shadeless": true,
+    "material": "base:glass",
    "base:durability": 0.3
 }
@@ -12,7 +12,7 @@
    </container>
    
    <container id="logContainer" pos="0,60"
-               size-func="unpack(vec2.add(gui.get_viewport(), {0,-100}))">
+               size-func="unpack(vec2.add(gui.get_viewport(), {-350,-100}))">
        <textbox 
            id='log' 
            color='0'
@@ -20,7 +20,7 @@
            margin='0'
            editable='false' 
            multiline='true' 
-            size-func="gui.get_viewport()[1],40"
+            size-func="gui.get_viewport()[1]-350,40"
            gravity="bottom-left"
            markup="md"
        ></textbox>
@@ -97,11 +97,12 @@ end)
 function setup_variables()
    local pid = hud.get_player()
    local x,y,z = player.get_pos(pid)
+    console.set("player", pid)
    console.set('pos.x', x)
    console.set('pos.y', y)
    console.set('pos.z', z)
    local pentity = player.get_entity(pid)
-    if pentity ~= 0 then
+    if pentity > 0 then
        console.set('entity.id', pentity)
    end
    local sentity = player.get_selected_entity(pid)
@@ -148,8 +149,6 @@ function submit(text)
            text = text:sub(2)
        end
    end
-
-    setup_variables()
    
    local name
    for s in text:gmatch("%S+") do
@@ -167,12 +166,19 @@ function submit(text)
    end
    
    document.log.caret = -1
-    local status, result = pcall(console.execute, text)
-    if result then
-        console.log(result)
-    end
    document.prompt.text = ""
    document.prompt.focused = true
+
+    setup_variables()
+
+    if console.submit then
+        console.submit(text)
+    else    
+        local status, result = pcall(console.execute, text)
+        if result then
+            console.log(result)
+        end
+    end
 end

 function set_mode(mode)
@@ -7,16 +7,11 @@ local initialized = false
 local max_lines = 15
 local animation_fps = 30

-local function remove_line(line)
-    document[line[1]]:destruct()
-    time.post_runnable(function() document.root:reposition() end)
-end
-
 local function update_line(line, uptime)
    local diff = uptime - line[2]
    if diff > timeout then
-        remove_line(line)
-        table.insert(dead_lines, i)
+        document[line[1]]:destruct()
+        table.insert(dead_lines, table.index(lines, line))
    elseif diff > timeout-fadeout then
        local opacity = (timeout - diff) / fadeout
        document[line[1]].color = {0, 0, 0, opacity * 80}
@@ -25,16 +20,16 @@ local function update_line(line, uptime)
 end

 events.on("core:chat", function(message)
+    while #lines >= max_lines do
+        document[lines[1][1]]:destruct()
+        table.remove(lines, 1)
+    end
    local current_time = time.uptime()
    local id = 'l'..tostring(nextid)
    document.root:add(gui.template("chat_line", {id=id}))
    document.root:reposition()
    document[id.."L"].text = message
    nextid = nextid + 1
-    if #lines == max_lines then
-        remove_line(lines[1])
-        table.remove(lines, 1)
-    end
    table.insert(lines, {id, current_time})
 end)

@@ -313,8 +313,8 @@ function bit_converter.bytes_to_uint16(bytes, order)

     return
     bit.bor(
-     bit.lshift(bytes[1], 8),
-     bytes[2], 0)
+     bit.lshift(bytes[2], 8),
+     bytes[1], 0)
 end

 function bit_converter.bytes_to_int64(bytes, order)
@@ -144,31 +144,31 @@ function data_buffer:put_number(num)

 	if math.floor(num) ~= num then
 		type = TYPE_FLOAT64
-		bytes = bit_converter.float64_to_bytes(num)
+		bytes = bit_converter.float64_to_bytes(num, self.order)
 	elseif num == 0 then
 		type = TYPE_ZERO
 		bytes = { }
 	elseif num > 0 then
 		if num <= MAX_UINT16 then
 			type = TYPE_UINT16
-			bytes = bit_converter.uint16_to_bytes(num)
+			bytes = bit_converter.uint16_to_bytes(num, self.order)
 		elseif num <= MAX_UINT32 then
 			type = TYPE_UINT32
-			bytes = bit_converter.uint32_to_bytes(num)
+			bytes = bit_converter.uint32_to_bytes(num, self.order)
 		elseif num <= MAX_INT64 then
 			type = TYPE_INT64
-			bytes = bit_converter.int64_to_bytes(num)
+			bytes = bit_converter.int64_to_bytes(num, self.order)
 		end
 	elseif num < 0 then
 		if num >= MIN_INT16 then
 			type = TYPE_SINT16
-			bytes = bit_converter.sint16_to_bytes(num)
+			bytes = bit_converter.sint16_to_bytes(num, self.order)
 		elseif num >= MIN_INT32 then
 			type = TYPE_SINT32
-			bytes = bit_converter.sint32_to_bytes(num)
+			bytes = bit_converter.sint32_to_bytes(num, self.order)
 		elseif num >= MIN_INT64 then
 			type = TYPE_INT64
-			bytes = bit_converter.int64_to_bytes(num)
+			bytes = bit_converter.int64_to_bytes(num, self.order)
 		end
 	end

@@ -47,7 +47,7 @@ function gui_util.add_page_dispatcher(dispatcher)
    table.insert(gui_util.local_dispatchers, dispatcher)
 end

-function gui_util.reset_local()
+function gui_util.__reset_local()
    gui_util.local_dispatchers = {}
 end

@@ -68,6 +68,22 @@ local Entity = {__index={
    def_index=function(self) return entities.get_def(self.eid) end,
    def_name=function(self) return entities.def_name(entities.get_def(self.eid)) end,
    get_player=function(self) return entities.get_player(self.eid) end,
+    set_enabled=function(self, name, flag)
+        local comp = self.components[name] 
+        if comp then
+            if flag then
+                if comp.__disabled and comp.on_enable then
+                    comp.on_enable()
+                end
+                comp.__disabled = nil
+            else
+                if not comp.__disabled and comp.on_disable then
+                    comp.on_disable()
+                end
+                comp.__disabled = true
+            end
+        end
+    end,
 }}

 local entities = {}
@@ -99,7 +115,7 @@ return {
            end
            for _, component in pairs(entity.components) do
                local callback = component.on_update
-                if callback then
+                if not component.__disabled and callback then
                    local result, err = pcall(callback, tps)
                    if err then
                        debug.error(err)
@@ -113,7 +129,7 @@ return {
        for _,entity in pairs(entities) do
            for _, component in pairs(entity.components) do
                local callback = component.on_render
-                if callback then
+                if not component.__disabled and callback then
                    local result, err = pcall(callback, delta)
                    if err then
                        debug.error(err)
@@ -132,5 +148,8 @@ return {
            end
            return values
        end
+    end,
+    __reset = function()
+        entities = {}
    end
 }
@@ -37,7 +37,10 @@ local function complete_app_lib(app)
    app.tick = coroutine.yield
    app.get_version = core.get_version
    app.get_setting_info = core.get_setting_info
-    app.load_content = core.load_content
+    app.load_content = function()
+        core.load_content()
+        app.tick()
+    end
    app.reset_content = core.reset_content
    app.is_content_loaded = core.is_content_loaded
    
@@ -191,8 +194,8 @@ function gui.template(name, params)
    text = text:gsub("if%s*=%s*'%%{%w+}'", "if=''")
    text = text:gsub("if%s*=%s*\"%%{%w+}\"", "if=\"\"")
    -- remove unsolved properties: attr='%{var}'
-    text = text:gsub("%w+%s*=%s*'%%{%w+}'%s?", "")
-    text = text:gsub("%w+%s*=%s*\"%%{%w+}\"%s?", "")
+    text = text:gsub("%s*%S+='%%{[^}]+}'%s*", " ")
+    text = text:gsub('%s*%S+="%%{[^}]+}"%s*', " ")
    return text
 end

@@ -343,8 +346,8 @@ function __vc_on_hud_open()
        end)
    end)
    input.add_callback("key:escape", function()
-        if hud.is_paused() then
-            hud.resume()
+        if menu.page ~= "" then
+            menu:reset()
        elseif hud.is_inventory_open() then
            hud.close_inventory()
        else
@@ -375,7 +378,8 @@ end

 function __vc_on_world_quit()
    _rules.clear()
-    gui_util:reset_local()
+    gui_util:__reset_local()
+    stdcomp.__reset()
 end

 local __vc_coroutines = {}
@@ -415,7 +419,18 @@ end

 function start_coroutine(chunk, name)
    local co = coroutine.create(function()
-        local status, error = xpcall(chunk, __vc__error)
+        local status, error = xpcall(chunk, function(...)
+            gui.alert(debug.traceback(), function()
+                if world.is_open() then
+                    __vc_app.close_world()
+                else
+                    __vc_app.reset_content()
+                    menu:reset()
+                    menu.page = "main"
+                end
+            end)
+            return ...
+        end)
        if not status then
            debug.error(error)
        end
@@ -9,19 +9,21 @@
 #include "AL/ALAudio.hpp"
 #include "NoAudio.hpp"
 #include "debug/Logger.hpp"
+#include "util/ObjectsKeeper.hpp"

 static debug::Logger logger("audio");

-namespace audio {
+using namespace audio;
+
+namespace {
    static speakerid_t nextId = 1;
    static Backend* backend;
    static std::unordered_map<speakerid_t, std::unique_ptr<Speaker>> speakers;
    static std::unordered_map<speakerid_t, std::shared_ptr<Stream>> streams;
    static std::vector<std::unique_ptr<Channel>> channels;
+    static util::ObjectsKeeper objects_keeper {};
 }

-using namespace audio;
-
 Channel::Channel(std::string name) : name(std::move(name)) {
 }

@@ -148,7 +150,8 @@ public:
    }
 };

-void audio::initialize(bool enabled) {
+void audio::initialize(bool enabled, AudioSettings& settings) {
+    enabled = enabled && settings.enabled.get();
    if (enabled) {
        logger.info() << "initializing ALAudio backend";
        backend = ALAudio::create().release();
@@ -160,7 +163,22 @@ void audio::initialize(bool enabled) {
        logger.info() << "initializing NoAudio backend";
        backend = NoAudio::create().release();
    }
-    create_channel("master");
+    struct {
+        std::string name;
+        NumberSetting* setting;
+    } builtin_channels[] {
+        {"master", &settings.volumeMaster},
+        {"regular", &settings.volumeRegular},
+        {"music", &settings.volumeMusic},
+        {"ambient", &settings.volumeAmbient},
+        {"ui", &settings.volumeUI}
+    };
+    for (auto& channel : builtin_channels) {
+        create_channel(channel.name);
+        objects_keeper.keepAlive(channel.setting->observe([=](auto value) {
+            audio::get_channel(channel.name)->setVolume(value * value);
+        }, true));
+    }
 }

 std::unique_ptr<PCM> audio::load_PCM(const fs::path& file, bool headerOnly) {
@@ -442,4 +460,5 @@ void audio::close() {
    speakers.clear();
    delete backend;
    backend = nullptr;
+    objects_keeper.clearKeepedObjects();
 }
@@ -6,6 +6,7 @@
 #include <vector>

 #include "typedefs.hpp"
+#include "settings.hpp"

 namespace fs = std::filesystem;

@@ -357,7 +358,7 @@ namespace audio {

    /// @brief Initialize audio system or use no audio mode
    /// @param enabled try to initialize actual audio
-    void initialize(bool enabled);
+    void initialize(bool enabled, AudioSettings& settings);

    /// @brief Load audio file info and PCM data
    /// @param file audio file
@@ -27,6 +27,7 @@ inline constexpr blockid_t BLOCK_OBSTACLE = 1;
 inline constexpr blockid_t BLOCK_STRUCT_AIR = 2;
 inline constexpr itemid_t ITEM_EMPTY = 0;
 inline constexpr entityid_t ENTITY_NONE = 0;
+inline constexpr entityid_t ENTITY_AUTO = std::numeric_limits<entityid_t>::max();

 inline constexpr int CHUNK_W = 16;
 inline constexpr int CHUNK_H = 256;
@@ -104,6 +104,9 @@ namespace dv {
    }

    boolean_t value::asBoolean() const {
+        if (type == value_type::none) {
+            return false;
+        }
        check_type(type, value_type::boolean);
        return val.boolean;
    }
@@ -52,15 +52,6 @@ static debug::Logger logger("engine");

 namespace fs = std::filesystem;

-static void create_channel(Engine* engine, std::string name, NumberSetting& setting) {
-    if (name != "master") {
-        audio::create_channel(name);
-    }
-    engine->keepAlive(setting.observe([=](auto value) {
-        audio::get_channel(name)->setVolume(value*value);
-    }, true));
-}
-
 static std::unique_ptr<ImageData> load_icon(const fs::path& resdir) {
    try {
        auto file = resdir / fs::u8path("textures/misc/icon.png");
@@ -73,12 +64,23 @@ static std::unique_ptr<ImageData> load_icon(const fs::path& resdir) {
    return nullptr;
 }

-Engine::Engine(CoreParameters coreParameters)
-    : params(std::move(coreParameters)),
-      settings(),
-      settingsHandler({settings}),
-      interpreter(std::make_unique<cmd::CommandsInterpreter>()),
-      network(network::Network::create(settings.network)) {
+Engine::Engine() = default;
+
+static std::unique_ptr<Engine> engine;
+
+Engine& Engine::getInstance() {
+    if (!engine) {
+        engine = std::make_unique<Engine>();
+    }
+    return *engine;
+}
+
+void Engine::initialize(CoreParameters coreParameters) {
+    params = std::move(coreParameters);
+    settingsHandler = std::make_unique<SettingsHandler>(settings);
+    interpreter = std::make_unique<cmd::CommandsInterpreter>();
+    network = network::Network::create(settings.network);
+
    logger.info() << "engine version: " << ENGINE_VERSION_STRING;
    if (params.headless) {
        logger.info() << "headless mode is enabled";
@@ -110,12 +112,7 @@ Engine::Engine(CoreParameters coreParameters)
            menus::create_version_label(*this);
        }
    }
-    audio::initialize(settings.audio.enabled.get() && !params.headless);
-    create_channel(this, "master", settings.audio.volumeMaster);
-    create_channel(this, "regular", settings.audio.volumeRegular);
-    create_channel(this, "music", settings.audio.volumeMusic);
-    create_channel(this, "ambient", settings.audio.volumeAmbient);
-    create_channel(this, "ui", settings.audio.volumeUI);
+    audio::initialize(!params.headless, settings.audio);

    bool langNotSet = settings.ui.language.get() == "auto";
    if (langNotSet) {
@@ -140,7 +137,7 @@ void Engine::loadSettings() {
        logger.info() << "loading settings";
        std::string text = files::read_string(settings_file);
        try {
-            toml::parse(settingsHandler, settings_file.string(), text);
+            toml::parse(*settingsHandler, settings_file.string(), text);
        } catch (const parsing_error& err) {
            logger.error() << err.errorLog();
            throw;
@@ -199,6 +196,7 @@ void Engine::updateFrontend() {
    audio::update(delta);
    gui->act(delta, Viewport(Window::width, Window::height));
    screen->update(delta);
+    gui->postAct();
 }

 void Engine::nextFrame() {
@@ -217,12 +215,11 @@ void Engine::renderFrame() {
    Viewport viewport(Window::width, Window::height);
    DrawContext ctx(nullptr, viewport, nullptr);
    gui->draw(ctx, *assets);
-    gui->postAct();
 }

 void Engine::saveSettings() {
    logger.info() << "saving settings";
-    files::write_string(paths.getSettingsFile(), toml::stringify(settingsHandler));
+    files::write_string(paths.getSettingsFile(), toml::stringify(*settingsHandler));
    if (!params.headless) {
        logger.info() << "saving bindings";
        files::write_string(paths.getControlsFile(), Events::writeBindings());
@@ -255,6 +252,10 @@ Engine::~Engine() {
    logger.info() << "engine finished";
 }

+void Engine::terminate() {
+    engine.reset();
+}
+
 EngineController* Engine::getController() {
    return controller.get();
 }
@@ -511,7 +512,7 @@ std::shared_ptr<Screen> Engine::getScreen() {
 }

 SettingsHandler& Engine::getSettingsHandler() {
-    return settingsHandler;
+    return *settingsHandler;
 }

 network::Network& Engine::getNetwork() {
@@ -58,9 +58,9 @@ using OnWorldOpen = std::function<void(std::unique_ptr<Level>, int64_t)>;
 class Engine : public util::ObjectsKeeper {
    CoreParameters params;
    EngineSettings settings;
-    SettingsHandler settingsHandler;
    EnginePaths paths;

+    std::unique_ptr<SettingsHandler> settingsHandler;
    std::unique_ptr<Assets> assets;
    std::shared_ptr<Screen> screen;
    std::vector<ContentPack> contentPacks;
@@ -82,9 +82,15 @@ class Engine : public util::ObjectsKeeper {
    void updateHotkeys();
    void loadAssets();
 public:
-    Engine(CoreParameters coreParameters);
+    Engine();
    ~Engine();

+    static Engine& getInstance();
+
+    void initialize(CoreParameters coreParameters);
+
+    static void terminate();
+
    /// @brief Start the engine
    void run();

@@ -117,7 +117,9 @@ void LevelScreen::initializePack(ContentPackRuntime* pack) {
 }

 LevelScreen::~LevelScreen() {
-    saveWorldPreview();
+    if (!controller->getLevel()->getWorld()->isNameless()) {
+        saveWorldPreview();
+    }
    scripting::on_frontend_close();
    // unblock all bindings
    Events::enableBindings();
@@ -9,7 +9,7 @@
 #include "lighting/Lightmap.hpp"
 #include "frontend/ContentGfxCache.hpp"

-const glm::vec3 BlocksRenderer::SUN_VECTOR (0.411934f, 0.863868f, -0.279161f);
+const glm::vec3 BlocksRenderer::SUN_VECTOR (0.2275f,0.9388f,-0.1005f);

 BlocksRenderer::BlocksRenderer(
    size_t capacity,
@@ -129,7 +129,7 @@ void BlocksRenderer::faceAO(
    float s = 0.5f;
    if (lights) {
        float d = glm::dot(glm::normalize(Z), SUN_VECTOR);
-        d = 0.8f + d * 0.2f;
+        d = 0.7f + d * 0.3f;

        auto axisX = glm::normalize(X);
        auto axisY = glm::normalize(Y);
@@ -167,7 +167,7 @@ void BlocksRenderer::face(
    float s = 0.5f;
    if (lights) {
        float d = glm::dot(glm::normalize(Z), SUN_VECTOR);
-        d = 0.8f + d * 0.2f;
+        d = 0.7f + d * 0.3f;
        tint *= d;
    }
    vertex(coord + (-X - Y + Z) * s, region.u1, region.v1, tint);
@@ -202,7 +202,7 @@ void GUI::act(float delta, const Viewport& vp) {

 void GUI::postAct() {
    while (!postRunnables.empty()) {
-        runnable callback = postRunnables.back();
+        runnable callback = postRunnables.front();
        postRunnables.pop();
        callback();
    }
@@ -53,6 +53,7 @@ void Panel::cropToContent() {
 void Panel::fullRefresh() {
    refresh();
    cropToContent();
+    reposition();
    Container::fullRefresh();
 }

@@ -826,7 +826,7 @@ void TextBox::setCaret(size_t position) {
        scrolled(-glm::ceil(offset/static_cast<double>(scrollStep)+0.5f));
    }
    uint lcaret = caret - label->getTextLineOffset(line);
-    int realoffset = font->calcWidth(input, lcaret)-int(textOffset)+2;
+    int realoffset = font->calcWidth(input, lcaret)-int(textOffset) - padding.x;
    if (realoffset-width > 0) {
        setTextOffset(textOffset + realoffset-width);
    } else if (realoffset < 0) {
@@ -34,13 +34,14 @@ void guiutil::alert(
    auto panel = std::make_shared<Panel>(glm::vec2(500, 300), glm::vec4(4.0f), 4.0f);
    panel->setColor(glm::vec4(0.0f, 0.0f, 0.0f, 0.5f));

-    auto menu = engine.getGUI()->getMenu();
-    runnable on_hidden_final = [on_hidden, menu, &engine]() {
-        menu->removePage("<alert>");
+    auto menuPtr = engine.getGUI()->getMenu();
+    auto& menu = *menuPtr;
+    runnable on_hidden_final = [on_hidden, &menu, &engine]() {
+        menu.removePage("<alert>");
        if (on_hidden) {
            on_hidden();
        } else {
-            menu->back();
+            menu.back();
        }
    };
    
@@ -50,21 +51,21 @@ void guiutil::alert(
    panel->add(label);
    panel->add(std::make_shared<Button>(
        langs::get(L"Ok"), glm::vec4(10.f), 
-        [=](GUI*) {
+        [on_hidden_final](GUI*) {
            on_hidden_final();
        }
    ));
    panel->refresh();
-    panel->keepAlive(Events::keyCallbacks[keycode::ENTER].add([=](){
+    panel->keepAlive(Events::keyCallbacks[keycode::ENTER].add([on_hidden_final](){
        on_hidden_final();
        return true;
    }));
-    panel->keepAlive(Events::keyCallbacks[keycode::ESCAPE].add([=](){
+    panel->keepAlive(Events::keyCallbacks[keycode::ESCAPE].add([on_hidden_final](){
        on_hidden_final();
        return true;
    }));
-    menu->addPage("<alert>", panel, true);
-    menu->setPage("<alert>");
+    menu.addPage("<alert>", panel, true);
+    menu.setPage("<alert>");
 }

 void guiutil::confirm(
@@ -82,8 +82,8 @@ static onaction create_action(
    return [callback](GUI*) {callback();};
 }

-/* Read basic UINode properties */
-static void _readUINode(
+/// @brief Read basic UINode properties
+static void read_uinode(
    const UiXmlReader& reader, const xml::xmlelement& element, UINode& node
 ) {
    if (element.has("id")) {
@@ -177,8 +177,8 @@ static void _readUINode(
    }
 }

-static void _readContainer(UiXmlReader& reader, const xml::xmlelement& element, Container& container) {
-    _readUINode(reader, element, container);
+static void read_container_impl(UiXmlReader& reader, const xml::xmlelement& element, Container& container) {
+    read_uinode(reader, element, container);

    if (element.has("scrollable")) {
        container.setScrollable(element.attr("scrollable").asBool());
@@ -197,17 +197,22 @@ static void _readContainer(UiXmlReader& reader, const xml::xmlelement& element,
 }

 void UiXmlReader::readUINode(UiXmlReader& reader, const xml::xmlelement& element, Container& container) {
-    _readContainer(reader, element, container);
+    read_container_impl(reader, element, container);
 }

 void UiXmlReader::readUINode(
    const UiXmlReader& reader, const xml::xmlelement& element, UINode& node
 ) {
-    _readUINode(reader, element, node);
+    read_uinode(reader, element, node);
 }

-static void _readPanel(UiXmlReader& reader, const xml::xmlelement& element, Panel& panel, bool subnodes=true) {
-    _readUINode(reader, element, panel);
+static void read_panel_impl(
+    UiXmlReader& reader,
+    const xml::xmlelement& element,
+    Panel& panel,
+    bool subnodes = true
+) {
+    read_uinode(reader, element, panel);

    if (element.has("padding")) {
        glm::vec4 padding = element.attr("padding").asVec4();
@@ -245,7 +250,9 @@ static void _readPanel(UiXmlReader& reader, const xml::xmlelement& element, Pane
    }
 }

-static std::wstring readAndProcessInnerText(const xml::xmlelement& element, const std::string& context) {
+static std::wstring parse_inner_text(
+    const xml::xmlelement& element, const std::string& context
+) {
    std::wstring text = L"";
    if (element.size() == 1) {
        std::string source = element.sub(0).attr("#").getText();
@@ -265,9 +272,9 @@ static std::wstring readAndProcessInnerText(const xml::xmlelement& element, cons
 static std::shared_ptr<UINode> readLabel(
    const UiXmlReader& reader, const xml::xmlelement& element
 ) {
-    std::wstring text = readAndProcessInnerText(element, reader.getContext());
+    std::wstring text = parse_inner_text(element, reader.getContext());
    auto label = std::make_shared<Label>(text);
-    _readUINode(reader, element, *label);
+    read_uinode(reader, element, *label);
    if (element.has("valign")) {
        label->setVerticalAlign(
            align_from_string(element.attr("valign").getText(), label->getVerticalAlign())
@@ -298,20 +305,26 @@ static std::shared_ptr<UINode> readLabel(
    return label;
 }

-static std::shared_ptr<UINode> readContainer(UiXmlReader& reader, const xml::xmlelement& element) {
+static std::shared_ptr<UINode> read_container(
+    UiXmlReader& reader, const xml::xmlelement& element
+) {
    auto container = std::make_shared<Container>(glm::vec2());
-    _readContainer(reader, element, *container);
+    read_container_impl(reader, element, *container);
    return container;
 }

-static std::shared_ptr<UINode> readPanel(UiXmlReader& reader, const xml::xmlelement& element) {
+static std::shared_ptr<UINode> read_panel(
+    UiXmlReader& reader, const xml::xmlelement& element
+) {
    float interval = element.attr("interval", "2").asFloat();
    auto panel = std::make_shared<Panel>(glm::vec2(), glm::vec4(), interval);
-    _readPanel(reader, element, *panel);
+    read_panel_impl(reader, element, *panel);
    return panel;
 }

-static std::shared_ptr<UINode> readButton(UiXmlReader& reader, const xml::xmlelement& element) {
+static std::shared_ptr<UINode> read_button(
+    UiXmlReader& reader, const xml::xmlelement& element
+) {
    glm::vec4 padding = element.attr("padding", "10").asVec4();

    std::shared_ptr<Button> button;
@@ -323,11 +336,11 @@ static std::shared_ptr<UINode> readButton(UiXmlReader& reader, const xml::xmlele
        } else {
            button = std::make_shared<Button>(L"", padding, nullptr);
        }
-        _readPanel(reader, element, *button, false);
+        read_panel_impl(reader, element, *button, false);
    } else {
-        std::wstring text = readAndProcessInnerText(element, reader.getContext());
+        std::wstring text = parse_inner_text(element, reader.getContext());
        button = std::make_shared<Button>(text, padding, nullptr);
-        _readPanel(reader, element, *button, true);
+        read_panel_impl(reader, element, *button, true);
    }
    if (element.has("text-align")) {
        button->setTextAlign(align_from_string(
@@ -337,11 +350,13 @@ static std::shared_ptr<UINode> readButton(UiXmlReader& reader, const xml::xmlele
    return button;
 }

-static std::shared_ptr<UINode> readCheckBox(UiXmlReader& reader, const xml::xmlelement& element) {
-    auto text = readAndProcessInnerText(element, reader.getContext());
+static std::shared_ptr<UINode> read_check_box(
+    UiXmlReader& reader, const xml::xmlelement& element
+) {
+    auto text = parse_inner_text(element, reader.getContext());
    bool checked = element.attr("checked", "false").asBool();
    auto checkbox = std::make_shared<FullCheckBox>(text, glm::vec2(32), checked);
-    _readPanel(reader, element, *checkbox);
+    read_panel_impl(reader, element, *checkbox);

    if (element.has("consumer")) {
        checkbox->setConsumer(scripting::create_bool_consumer(
@@ -361,14 +376,16 @@ static std::shared_ptr<UINode> readCheckBox(UiXmlReader& reader, const xml::xmle
    return checkbox;
 }

-static std::shared_ptr<UINode> readTextBox(UiXmlReader& reader, const xml::xmlelement& element) {
+static std::shared_ptr<UINode> read_text_box(
+    UiXmlReader& reader, const xml::xmlelement& element
+) {
    auto placeholder = util::str2wstr_utf8(element.attr("placeholder", "").getText());
    auto hint = util::str2wstr_utf8(element.attr("hint", "").getText());
-    auto text = readAndProcessInnerText(element, reader.getContext());
+    auto text = parse_inner_text(element, reader.getContext());
    auto textbox = std::make_shared<TextBox>(placeholder, glm::vec4(0.0f));
    textbox->setHint(hint);
    
-    _readContainer(reader, element, *textbox);
+    read_container_impl(reader, element, *textbox);
    if (element.has("padding")) {
        glm::vec4 padding = element.attr("padding").asVec4();
        textbox->setPadding(padding);
@@ -447,16 +464,16 @@ static std::shared_ptr<UINode> readTextBox(UiXmlReader& reader, const xml::xmlel
    return textbox;
 }

-static std::shared_ptr<UINode> readImage(
+static std::shared_ptr<UINode> read_image(
    const UiXmlReader& reader, const xml::xmlelement& element
 ) {
    std::string src = element.attr("src", "").getText();
    auto image = std::make_shared<Image>(src);
-    _readUINode(reader, element, *image);
+    read_uinode(reader, element, *image);
    return image;
 }

-static std::shared_ptr<UINode> readCanvas(
+static std::shared_ptr<UINode> read_canvas(
    const UiXmlReader& reader, const xml::xmlelement& element
 ) {
    auto size = glm::uvec2{32, 32};
@@ -464,11 +481,11 @@ static std::shared_ptr<UINode> readCanvas(
        size = element.attr("size").asVec2();
    }
    auto image = std::make_shared<Canvas>(ImageFormat::rgba8888, size);
-    _readUINode(reader, element, *image);
+    read_uinode(reader, element, *image);
    return image;
 }

-static std::shared_ptr<UINode> readTrackBar(
+static std::shared_ptr<UINode> read_track_bar(
    const UiXmlReader& reader, const xml::xmlelement& element
 ) {
    const auto& env = reader.getEnvironment();
@@ -479,7 +496,7 @@ static std::shared_ptr<UINode> readTrackBar(
    float step = element.attr("step", "1.0").asFloat();
    int trackWidth = element.attr("track-width", "12").asInt();
    auto bar = std::make_shared<TrackBar>(minv, maxv, def, step, trackWidth);
-    _readUINode(reader, element, *bar);
+    read_uinode(reader, element, *bar);
    if (element.has("consumer")) {
        bar->setConsumer(scripting::create_number_consumer(
            env, element.attr("consumer").getText(), file));
@@ -501,7 +518,9 @@ static std::shared_ptr<UINode> readTrackBar(
    return bar;
 }

-static std::shared_ptr<UINode> readInputBindBox(UiXmlReader& reader, const xml::xmlelement& element) {
+static std::shared_ptr<UINode> read_input_bind_box(
+    UiXmlReader& reader, const xml::xmlelement& element
+) {
    auto bindname = element.attr("binding").getText();
    auto found = Events::bindings.find(bindname);
    if (found == Events::bindings.end()) {
@@ -509,12 +528,12 @@ static std::shared_ptr<UINode> readInputBindBox(UiXmlReader& reader, const xml::
    }
    glm::vec4 padding = element.attr("padding", "6").asVec4();
    auto bindbox = std::make_shared<InputBindBox>(found->second, padding);
-    _readPanel(reader, element, *bindbox);
+    read_panel_impl(reader, element, *bindbox);

    return bindbox;
 }

-static slotcallback readSlotFunc(
+static slotcallback read_slot_func(
    InventoryView* view,
    const UiXmlReader& reader,
    const xml::xmlelement& element,
@@ -542,13 +561,13 @@ static void readSlot(
        layout.position = element.attr("pos").asVec2();
    }
    if (element.has("updatefunc")) {
-        layout.updateFunc = readSlotFunc(view, reader, element, "updatefunc");
+        layout.updateFunc = read_slot_func(view, reader, element, "updatefunc");
    }
    if (element.has("sharefunc")) {
-        layout.shareFunc = readSlotFunc(view, reader, element, "sharefunc");
+        layout.shareFunc = read_slot_func(view, reader, element, "sharefunc");
    }
    if (element.has("onrightclick")) {
-        layout.rightClick = readSlotFunc(view, reader, element, "onrightclick");
+        layout.rightClick = read_slot_func(view, reader, element, "onrightclick");
    }
    layout.taking = taking;
    layout.placing = placing;
@@ -588,13 +607,13 @@ static void readSlotsGrid(
        layout.position = element.attr("pos").asVec2();
    }
    if (element.has("updatefunc")) {
-        layout.updateFunc = readSlotFunc(view, reader, element, "updatefunc");
+        layout.updateFunc = read_slot_func(view, reader, element, "updatefunc");
    }
    if (element.has("sharefunc")) {
-        layout.shareFunc = readSlotFunc(view, reader, element, "sharefunc");
+        layout.shareFunc = read_slot_func(view, reader, element, "sharefunc");
    }
    if (element.has("onrightclick")) {
-        layout.rightClick = readSlotFunc(view, reader, element, "onrightclick");
+        layout.rightClick = read_slot_func(view, reader, element, "onrightclick");
    }
    layout.padding = padding;
    layout.taking = taking;
@@ -618,7 +637,9 @@ static void readSlotsGrid(
    }
 }

-static std::shared_ptr<UINode> readInventory(UiXmlReader& reader, const xml::xmlelement& element) {
+static std::shared_ptr<UINode> read_inventory(
+    UiXmlReader& reader, const xml::xmlelement& element
+) {
    auto view = std::make_shared<InventoryView>();
    view->setColor(glm::vec4(0.122f, 0.122f, 0.122f, 0.878f)); // todo: fixme
    reader.addIgnore("slot");
@@ -633,31 +654,34 @@ static std::shared_ptr<UINode> readInventory(UiXmlReader& reader, const xml::xml
        }
    }
    return view;
-} 
+}

-static std::shared_ptr<UINode> readPageBox(UiXmlReader& reader, const xml::xmlelement& element) {
+static std::shared_ptr<UINode> read_page_box(
+    UiXmlReader& reader, const xml::xmlelement& element
+) {
    auto menu = std::make_shared<Menu>();
-    // FIXME
-    menu->setPageLoader(scripting::engine->getGUI()->getMenu()->getPageLoader());
-    _readContainer(reader, element, *menu);
+    menu->setPageLoader(
+        Engine::getInstance().getGUI()->getMenu()->getPageLoader()
+    );
+    read_container_impl(reader, element, *menu);

    return menu;
 }

 UiXmlReader::UiXmlReader(const scriptenv& env) : env(env) {
    contextStack.emplace("");
-    add("image", readImage);
-    add("canvas", readCanvas);
+    add("image", read_image);
+    add("canvas", read_canvas);
    add("label", readLabel);
-    add("panel", readPanel);
-    add("button", readButton);
-    add("textbox", readTextBox);
-    add("pagebox", readPageBox);
-    add("checkbox", readCheckBox);
-    add("trackbar", readTrackBar);
-    add("container", readContainer);
-    add("bindbox", readInputBindBox);
-    add("inventory", readInventory);
+    add("panel", read_panel);
+    add("button", read_button);
+    add("textbox", read_text_box);
+    add("pagebox", read_page_box);
+    add("checkbox", read_check_box);
+    add("trackbar", read_track_bar);
+    add("container", read_container);
+    add("bindbox", read_input_bind_box);
+    add("inventory", read_inventory);
 }

 void UiXmlReader::add(const std::string& tag, uinode_reader reader) {
@@ -46,9 +46,10 @@ static glm::vec4 parse_color(const std::basic_string_view<CharT>& color_code) {

 template <typename CharT>
 static inline void apply_color(
-    const std::basic_string_view<CharT>& color_code, FontStylesScheme& styles
+    const std::basic_string_view<CharT>& color_code, 
+    FontStylesScheme& styles,
+    FontStyle& style
 ) {
-    FontStyle style = styles.palette.back();
    style.color = parse_color(color_code);
    styles.palette.push_back(style);
 }
@@ -116,7 +117,7 @@ Result<CharT> process_markdown(
            }
        } else if (first == '[' && pos + 9 <= source.size() && source[pos + 1] == '#' && source[pos + 8] == ']') {
            std::basic_string_view<CharT> color_code = source.substr(pos + 1, 8);
-            apply_color(color_code, styles);
+            apply_color(color_code, styles, style);
            if (!eraseMarkdown) {
                for (int i = 0; i < 9; ++i) {
                    emit_md(source[pos + i], styles, ss);
@@ -4,6 +4,7 @@
 #include "typedefs.hpp"

 #include <memory>
+#include <cstring>

 inline constexpr int LIGHTMAP_DATA_LEN = CHUNK_VOL/2;

@@ -17,6 +18,10 @@ public:

    void set(const light_t* map);

+    void clear() {
+        std::memset(map, 0, sizeof(map));
+    }
+
    inline unsigned short get(int x, int y, int z) const {
        return (map[y*CHUNK_D*CHUNK_W+z*CHUNK_W+x]);
    }
@@ -43,6 +43,11 @@ static int l_execute(lua::State* L) {
    }
 }

+static int l_get(lua::State* L) {
+    auto name = lua::require_string(L, 1);
+    return lua::pushvalue(L, (*engine->getCommandsInterpreter())[name]);
+}
+
 static int l_set(lua::State* L) {
    auto name = lua::require_string(L, 1);
    auto value = lua::tovalue(L, 2);
@@ -119,6 +124,7 @@ static int l_get_command_info(lua::State* L) {
 const luaL_Reg consolelib[] = {
    {"add_command", lua::wrap<l_add_command>},
    {"execute", lua::wrap<l_execute>},
+    {"get", lua::wrap<l_get>},
    {"set", lua::wrap<l_set>},
    {"get_commands_list", lua::wrap<l_get_commands_list>},
    {"get_command_info", lua::wrap<l_get_command_info>},
@@ -148,7 +148,13 @@ static int l_reconfig_packs(lua::State* L) {
        lua::pop(L);
    }
    auto engineController = engine->getController();
-    engineController->reconfigPacks(controller, addPacks, remPacks);
+    try {
+        engineController->reconfigPacks(controller, addPacks, remPacks);
+    } catch (const contentpack_error& err) {
+        throw std::runtime_error(
+            std::string(err.what()) + " [" + err.getPackId() + " ]"
+        );
+    }
    return 0;
 }

@@ -231,7 +231,13 @@ static int l_pack_assemble(lua::State* L) {
    }
    auto manager = engine->createPacksManager(worldFolder);
    manager.scan();
-    ids = std::move(manager.assemble(ids));
+    try {
+        ids = std::move(manager.assemble(ids));
+    } catch (const contentpack_error& err) {
+        throw std::runtime_error(
+            std::string(err.what()) + " [" + err.getPackId() + "]"
+        );
+    }

    lua::createtable(L, ids.size(), 0);
    for (size_t i = 0; i < ids.size(); i++) {
@@ -229,7 +229,9 @@ static int l_set_entity(lua::State* L) {
    if (player == nullptr) {
        return 0;
    }
-    if (auto entity = get_entity(L, 2)) {
+    if (lua::isnumber(L, 2)) {
+        player->setEntity(lua::tointeger(L, 2));
+    } else if (auto entity = get_entity(L, 2)) {
        player->setEntity(entity->getUID());
    }
    return 0;
@@ -6,6 +6,7 @@
 #include "assets/AssetsLoader.hpp"
 #include "coders/json.hpp"
 #include "engine/Engine.hpp"
+#include "files/WorldFiles.hpp"
 #include "files/engine_paths.hpp"
 #include "files/files.hpp"
 #include "lighting/Lighting.hpp"
@@ -54,7 +55,7 @@ static int l_get_list(lua::State* L) {

        auto assets = engine->getAssets();
        std::string icon = "world#" + name + ".icon";
-        if (!AssetsLoader::loadExternalTexture(
+        if (!engine->isHeadless() && !AssetsLoader::loadExternalTexture(
                assets,
                icon,
                {worlds[i] / fs::path("icon.png"),
@@ -125,11 +126,21 @@ static int l_get_chunk_data(lua::State* L) {
    int x = static_cast<int>(lua::tointeger(L, 1));
    int z = static_cast<int>(lua::tointeger(L, 2));
    const auto& chunk = level->chunks->getChunk(x, z);
+
+    std::vector<ubyte> chunkData;
    if (chunk == nullptr) {
-        lua::pushnil(L);
-        return 0;
+        auto& regions = level->getWorld()->wfile->getRegions();
+        auto voxelData = regions.getVoxels(x, z);
+        if (voxelData == nullptr) {
+            return 0;
+        }
+        static util::Buffer<ubyte> rleBuffer(CHUNK_DATA_LEN * 2);
+        auto metadata = regions.getBlocksData(x, z);
+        chunkData =
+            compressed_chunks::encode(voxelData.get(), metadata, rleBuffer);
+    } else {
+        chunkData = compressed_chunks::encode(*chunk);
    }
-    auto chunkData = compressed_chunks::encode(*chunk);
    return lua::newuserdata<lua::LuaBytearray>(L, std::move(chunkData));
 }

@@ -137,12 +148,12 @@ static void integrate_chunk_client(Chunk& chunk) {
    int x = chunk.x;
    int z = chunk.z;
    auto chunksController = controller->getChunksController();
+    
    Lighting& lighting = *chunksController->lighting;
    chunk.flags.loadedLights = false;
    chunk.flags.lighted = false;
-
+    chunk.lightmap.clear();
    Lighting::prebuildSkyLight(chunk, *indices);
-    lighting.onChunkLoaded(x, z, true);

    for (int lz = -1; lz <= 1; lz++) {
        for (int lx = -1; lx <= 1; lx++) {
@@ -151,16 +162,20 @@ static void integrate_chunk_client(Chunk& chunk) {
            }
            if (auto other = level->chunks->getChunk(x + lx, z + lz)) {
                other->flags.modified = true;
-                lighting.onChunkLoaded(x - 1, z, true);
            }
        }
    }
 }

 static int l_set_chunk_data(lua::State* L) {
+    if (level == nullptr) {
+        throw std::runtime_error("no open world");
+    }
+
    int x = static_cast<int>(lua::tointeger(L, 1));
    int z = static_cast<int>(lua::tointeger(L, 2));
    auto buffer = lua::require_bytearray(L, 3);
+
    auto chunk = level->chunks->getChunk(x, z);
    if (chunk == nullptr) {
        return lua::pushboolean(L, false);
@@ -175,6 +190,21 @@ static int l_set_chunk_data(lua::State* L) {
    return lua::pushboolean(L, true);
 }

+static int l_save_chunk_data(lua::State* L) {
+    if (level == nullptr) {
+        throw std::runtime_error("no open world");
+    }
+
+    int x = static_cast<int>(lua::tointeger(L, 1));
+    int z = static_cast<int>(lua::tointeger(L, 2));
+    auto buffer = lua::require_bytearray(L, 3);
+
+    compressed_chunks::save(
+        x, z, std::move(buffer), level->getWorld()->wfile->getRegions()
+    );
+    return 0;
+}
+
 static int l_count_chunks(lua::State* L) {
    if (level == nullptr) {
        return 0;
@@ -197,6 +227,7 @@ const luaL_Reg worldlib[] = {
    {"exists", lua::wrap<l_exists>},
    {"get_chunk_data", lua::wrap<l_get_chunk_data>},
    {"set_chunk_data", lua::wrap<l_set_chunk_data>},
+    {"save_chunk_data", lua::wrap<l_save_chunk_data>},
    {"count_chunks", lua::wrap<l_count_chunks>},
    {NULL, NULL}
 };
@@ -22,6 +22,9 @@ namespace lua {

    inline void pop(lua::State* L, int n = 1) {
 #ifndef NDEBUG
+        if (n < 0) {
+            abort();
+        }
        if (lua_gettop(L) < n) {
            abort();
        }
@@ -86,7 +86,10 @@ public:
    }
    
    void update() override {
-        if (lua::getglobal(L, "__vc_resume_coroutine")) {
+        if (id == 0) {
+            return;
+        }
+        if (lua::requireglobal(L, "__vc_resume_coroutine")) {
            lua::pushinteger(L, id);
            if (lua::call(L, 1)) {
                alive = lua::toboolean(L, -1);
@@ -102,10 +105,10 @@ public:
    }
    
    void terminate() override {
-        if (lua::getglobal(L, "__vc_stop_coroutine")) {
-            lua::pushinteger(L, id);
-            lua::pop(L, lua::call(L, 1));
-        }
+        lua::requireglobal(L, "__vc_stop_coroutine");
+        lua::pushinteger(L, id);
+        lua::pop(L, lua::call(L, 1));
+        id = 0;
    }
 };

@@ -614,6 +617,10 @@ static void process_entity_callback(
 ) {
    auto L = lua::get_main_state();
    lua::pushenv(L, *env);
+    if (lua::hasfield(L, "__disabled")) {
+        lua::pop(L);
+        return;
+    }
    if (lua::getfield(L, name)) {
        if (args) {
            lua::call_nothrow(L, args(L), 0);
@@ -3,11 +3,16 @@
 #include "util/command_line.hpp"
 #include "debug/Logger.hpp"

+#include <csignal>
 #include <iostream>
 #include <stdexcept>

 static debug::Logger logger("main");

+static void sigterm_handler(int signum) {
+    Engine::getInstance().quit();
+}
+
 int main(int argc, char** argv) {
    CoreParameters coreParameters;
    try {
@@ -18,11 +23,15 @@ int main(int argc, char** argv) {
        std::cerr << err.what() << std::endl;
        return EXIT_FAILURE;
    }
-
+    std::signal(SIGTERM, sigterm_handler);
+    
    debug::Logger::init(coreParameters.userFolder.string()+"/latest.log");
    platform::configure_encoding();
+
+    auto& engine = Engine::getInstance();
    try {
-        Engine(std::move(coreParameters)).run();
+        engine.initialize(std::move(coreParameters));
+        engine.run();
    } catch (const initialize_error& err) {
        logger.error() << "could not to initialize engine\n" << err.what();
    }
@@ -33,5 +42,6 @@ int main(int argc, char** argv) {
        throw;
    }
 #endif
+    Engine::terminate();
    return EXIT_SUCCESS;
 }
@@ -62,7 +62,7 @@ Player::Player(
 Player::~Player() = default;

 void Player::updateEntity() {
-    if (eid == 0) {
+    if (eid == ENTITY_AUTO) {
        auto& def = level.content.entities.require("base:player");
        eid = level.entities->spawn(def, getPosition());
        if (auto entity = level.entities->get(eid)) {
@@ -73,10 +73,10 @@ void Player::updateEntity() {
        if (auto entity = level.entities->get(eid)) {
            entity->setPlayer(id);
        }
-    } else if (chunks->getChunkByVoxel(position)) {
+    } else if (chunks->getChunkByVoxel(position) && eid != ENTITY_NONE) {
        logger.error() << "player entity despawned or deleted; "
                          "will be respawned";
-        eid = 0;
+        eid = ENTITY_AUTO;
    }
 }

@@ -54,7 +54,7 @@ class Player : public Serializable {
    bool infiniteItems = true;
    bool instantDestruction = true;
    bool loadingChunks = true;
-    entityid_t eid;
+    entityid_t eid = ENTITY_AUTO;
    entityid_t selectedEid = 0;

    glm::vec3 rotation {};
@@ -37,7 +37,7 @@ Player* Players::create(int64_t id) {
        glm::vec3(0, DEF_PLAYER_Y, 0),
        DEF_PLAYER_SPEED,
        level.inventories->create(DEF_PLAYER_INVENTORY_SIZE),
-        0
+        ENTITY_AUTO
    );
    auto player = playerPtr.get();
    add(std::move(playerPtr));
@@ -92,7 +92,7 @@ void Players::deserialize(const dv::value& src) {
            glm::vec3(0, DEF_PLAYER_Y, 0),
            DEF_PLAYER_SPEED,
            level.inventories->create(DEF_PLAYER_INVENTORY_SIZE),
-            0
+            ENTITY_AUTO
        );
        auto player = playerPtr.get();
        player->deserialize(playerMap);
@@ -14,6 +14,7 @@
 #include "maths/voxmaths.hpp"

 #include <set>
+#include <algorithm>
 #include <stdint.h>
 #include <stdexcept>
 #include <glm/glm.hpp>
@@ -2,27 +2,24 @@

 #include "coders/rle.hpp"
 #include "coders/gzip.hpp"
-#include "coders/byte_utils.hpp"
-#include "voxels/Chunk.hpp"
+
+#include "files/WorldFiles.hpp"

 inline constexpr int HAS_VOXELS = 0x1;
 inline constexpr int HAS_METADATA = 0x2;

-std::vector<ubyte> compressed_chunks::encode(const Chunk& chunk) {
-    auto data = chunk.encode();
-
-    /// world.get_chunk_data is only available in the main Lua state
-    static util::Buffer<ubyte> rleBuffer;
-    if (rleBuffer.size() < CHUNK_DATA_LEN * 2) {
-        rleBuffer = util::Buffer<ubyte>(CHUNK_DATA_LEN * 2);
-    }
+std::vector<ubyte> compressed_chunks::encode(
+    const ubyte* data,
+    const BlocksMetadata& metadata,
+    util::Buffer<ubyte>& rleBuffer
+) {
    size_t rleCompressedSize =
-        extrle::encode16(data.get(), CHUNK_DATA_LEN, rleBuffer.data());
+        extrle::encode16(data, CHUNK_DATA_LEN, rleBuffer.data());

    const auto gzipCompressedData = gzip::compress(
        rleBuffer.data(), rleCompressedSize
    );
-    auto metadataBytes = chunk.blocksMetadata.serialize();
+    auto metadataBytes = metadata.serialize();

    ByteBuilder builder(2 + 8 + gzipCompressedData.size() + metadataBytes.size());
    builder.put(HAS_VOXELS | HAS_METADATA); // flags
@@ -34,6 +31,23 @@ std::vector<ubyte> compressed_chunks::encode(const Chunk& chunk) {
    return builder.build();
 }

+std::vector<ubyte> compressed_chunks::encode(const Chunk& chunk) {
+    auto data = chunk.encode();
+
+    /// world.get_chunk_data is only available in the main Lua state
+    static util::Buffer<ubyte> rleBuffer(CHUNK_DATA_LEN * 2);
+    return encode(data.get(), chunk.blocksMetadata, rleBuffer);
+}
+
+static void read_voxel_data(ByteReader& reader, util::Buffer<ubyte>& dst) {
+    size_t gzipCompressedSize = reader.getInt32();
+        
+    auto rleData = gzip::decompress(reader.pointer(), gzipCompressedSize);
+    reader.skip(gzipCompressedSize);
+
+    extrle::decode16(rleData.data(), rleData.size(), dst.data());
+}
+
 void compressed_chunks::decode(Chunk& chunk, const ubyte* src, size_t size) {
    ByteReader reader(src, size);

@@ -41,14 +55,9 @@ void compressed_chunks::decode(Chunk& chunk, const ubyte* src, size_t size) {
    reader.skip(1); // reserved byte

    if (flags & HAS_VOXELS) {
-        size_t gzipCompressedSize = reader.getInt32();
-        
-        auto rleData = gzip::decompress(reader.pointer(), gzipCompressedSize);
-        reader.skip(gzipCompressedSize);
-
        /// world.get_chunk_data is only available in the main Lua state
        static util::Buffer<ubyte> voxelData (CHUNK_DATA_LEN);
-        extrle::decode16(rleData.data(), rleData.size(), voxelData.data());
+        read_voxel_data(reader, voxelData);
        chunk.decode(voxelData.data());
        chunk.updateHeights();
    }
@@ -59,3 +68,30 @@ void compressed_chunks::decode(Chunk& chunk, const ubyte* src, size_t size) {
    }
    chunk.setModifiedAndUnsaved();
 }
+
+void compressed_chunks::save(
+    int x, int z, std::vector<ubyte> bytes, WorldRegions& regions
+) {
+    ByteReader reader(bytes.data(), bytes.size());
+
+    ubyte flags = reader.get();
+    reader.skip(1); // reserved byte
+    if (flags & HAS_VOXELS) {
+        util::Buffer<ubyte> voxelData (CHUNK_DATA_LEN);
+        read_voxel_data(reader, voxelData);
+        regions.put(
+            x, z, REGION_LAYER_VOXELS, voxelData.release(), CHUNK_DATA_LEN
+        );
+    }
+    if (flags & HAS_METADATA) {
+        size_t metadataSize = reader.getInt32();
+        regions.put(
+            x,
+            z,
+            REGION_LAYER_BLOCKS_DATA,
+            util::Buffer<ubyte>(reader.pointer(), metadataSize).release(),
+            metadataSize
+        );
+        reader.skip(metadataSize);
+    }
+}
@@ -1,12 +1,20 @@
 #pragma once

 #include "typedefs.hpp"
+#include "Chunk.hpp"
+#include "coders/byte_utils.hpp"

 #include <vector>

-class Chunk;
+class WorldRegions;

 namespace compressed_chunks {
+    std::vector<ubyte> encode(
+        const ubyte* voxelData,
+        const BlocksMetadata& metadata,
+        util::Buffer<ubyte>& rleBuffer
+    );
    std::vector<ubyte> encode(const Chunk& chunk);
    void decode(Chunk& chunk, const ubyte* src, size_t size);
+    void save(int x, int z, std::vector<ubyte> bytes, WorldRegions& regions);
 }
@@ -133,11 +133,12 @@ static inline const Biome* choose_biome(
            score += glm::abs((params[i] - biome.parameters[i].value) / 
                              biome.parameters[i].weight);
        }
-        if (score < chosenScore) {
+        if (score < chosenScore || std::isinf(chosenScore)) {
            chosenScore = score;
            chosenBiome = &biome;
        }
    }
+    assert(chosenBiome != nullptr);
    return chosenBiome;
 }

@@ -35,7 +35,7 @@ else()
 endif()

 if(CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
-    set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -no-pie -lstdc++fs")
+    set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -no-pie")
 endif()

 target_include_directories(