style: format Lua files (cataclysmbnteam#3819)

* build: add dprint-stylua plugin

we choose to use dprint because:
- its plugin system is useful when unifying formatters
- deno uses dprint internally, thus less migration debt
- lua IDE formatter is hard to set up

* docs: lua style guide

* style: format lua files

---------

Co-authored-by: nocontribute <>

.github/workflows/autofix.yml

@@ -25,10 +25,13 @@ jobs:
       - name: format C++ files
         run: make astyle
 
-      - name: format markdown and typescript files
+      - name: format Markdown and TypeScript files
         run: deno fmt
 
-      - name: json formatting
+      - name: format Lua files
+        run: deno task dprint fmt
+
+      - name: format JSON
         run: make style-all-json-parallel RELEASE=1
 
       - uses: autofix-ci/action@bee19d72e71787c12ca0f29de72f2833e437e4c9

data/mods/saveload_lua_test/main.lua

@@ -1,13 +1,14 @@
 gdebug.log_info("SLT: main")
 
-local mod = game.mod_runtime[ game.current_mod ]
-local storage = game.mod_storage[ game.current_mod ]
+local mod = game.mod_runtime[game.current_mod]
+local storage = game.mod_storage[game.current_mod]
 
 --[[
     If we keep all our data simple and in mod.storage,
     we won't even have to register save/load hooks,
     it'll be saved/loaded automatically.
-]]--
+]]
+--
 mod.storage = storage
 
 --[[
@@ -19,33 +20,35 @@ storage.num = 12.3
 -- Usertype
 storage.tri = Tripoint.new(3, 4, 5)
 -- String
-storage.tri_as_str = tostring( Tripoint.new(3, 4, 5) )
+storage.tri_as_str = tostring(Tripoint.new(3, 4, 5))
 
 --[[
     If we want to build complex state out of loaded data
     we may create a hook that would read loaded data from mod_storage
     and create our complex state in the mod_runtime.
-]]--
+]]
+--
 mod.on_game_load_hook = function()
-    gdebug.log_info("SLT: on_load")
-    
-    if storage.num then
-        gdebug.log_info( "Data found! num = ", storage.num )
-    end
-    if storage.tri then
-        gdebug.log_info( "Data found! tri = ", storage.tri )
-    end
+  gdebug.log_info("SLT: on_load")
+
+  if storage.num then
+    gdebug.log_info("Data found! num = ", storage.num)
+  end
+  if storage.tri then
+    gdebug.log_info("Data found! tri = ", storage.tri)
+  end
 end
 
 --[[
     If we have complex enough state (e.g. recursive tables, or with custom metatables)
     we may create a hook that would write a simplified version into mod_storage,
     so the hardcoded JSON serializer would be able to handle it.
-]]--
+]]
+--
 mod.on_game_save_hook = function()
-    gdebug.log_info("SLT: on_save")
+  gdebug.log_info("SLT: on_save")
 
-    if storage.num then
-        gdebug.log_info("Saving NUM value = ", storage.num)
-    end
+  if storage.num then
+    gdebug.log_info("Saving NUM value = ", storage.num)
+  end
 end

data/mods/saveload_lua_test/preload.lua

@@ -1,11 +1,11 @@
 gdebug.log_info("SLT: preload")
 
-local mod = game.mod_runtime[ game.current_mod ]
+local mod = game.mod_runtime[game.current_mod]
 
-game.hooks.on_game_load[ #game.hooks.on_game_load + 1 ] = function( ... )
-    return mod.on_game_load_hook( ... )
+game.hooks.on_game_load[#game.hooks.on_game_load + 1] = function(...)
+  return mod.on_game_load_hook(...)
 end
 
-game.hooks.on_game_save[ #game.hooks.on_game_save + 1 ] = function( ... )
-    return mod.on_game_save_hook( ... )
+game.hooks.on_game_save[#game.hooks.on_game_save + 1] = function(...)
+  return mod.on_game_save_hook(...)
 end