Remove language option from config file

d2app/app.go

@@ -66,6 +66,7 @@ type App struct {
 	captureFrames     []*image.RGBA
 	gitBranch         string
 	gitCommit         string
+	language          string
 	asset             *d2asset.AssetManager
 	inputManager      d2interface.InputManager
 	terminal          d2interface.Terminal
@@ -373,6 +374,8 @@ func (a *App) initialize() error {
 		return err
 	}
 
+	a.initLanguage()
+
 	if err := a.initDataDictionaries(); err != nil {
 		return err
 	}
@@ -454,6 +457,11 @@ func (a *App) initConfig(config *d2config.Configuration) error {
 	return nil
 }
 
+func (a *App) initLanguage() {
+	a.language = a.asset.LoadLanguage(d2resource.LocalLanguage)
+	a.asset.Loader.SetLanguage(&a.language)
+}
+
 func (a *App) initDataDictionaries() error {
 	dictPaths := []string{
 		d2resource.LevelType, d2resource.LevelPreset, d2resource.LevelWarp,

d2common/d2loader/loader.go

@@ -14,7 +14,6 @@ import (
 	"github.com/OpenDiablo2/OpenDiablo2/d2common/d2loader/mpq"
 	"github.com/OpenDiablo2/OpenDiablo2/d2common/d2resource"
 	"github.com/OpenDiablo2/OpenDiablo2/d2common/d2util"
-	"github.com/OpenDiablo2/OpenDiablo2/d2core/d2config"
 )
 
 const (
@@ -24,8 +23,7 @@ const (
 )
 
 const (
-	defaultLanguage = "ENG"
-	logPrefix       = "File Loader"
+	logPrefix = "File Loader"
 )
 
 const (
@@ -49,24 +47,27 @@ func NewLoader(l d2util.LogLevel) (*Loader, error) {
 // Loader represents the manager that handles loading and caching assets with the asset Sources
 // that have been added
 type Loader struct {
-	config *d2config.Configuration
+	language *string
 	d2interface.Cache
 	*d2util.Logger
 	Sources []asset.Source
 }
 
+// SetLanguage sets the language for loader
+func (l *Loader) SetLanguage(language *string) {
+	l.language = language
+}
+
 // Load attempts to load an asset with the given sub-path. The sub-path is relative to the root
 // of each asset source root (regardless of the type of asset source)
 func (l *Loader) Load(subPath string) (asset.Asset, error) {
-	lang := defaultLanguage
-
-	if l.config != nil {
-		lang = l.config.Language
-	}
-
 	subPath = filepath.Clean(subPath)
-	subPath = strings.ReplaceAll(subPath, fontToken, "latin")
-	subPath = strings.ReplaceAll(subPath, tableToken, lang)
+
+	if l.language != nil {
+		lang := l.language
+		subPath = strings.ReplaceAll(subPath, fontToken, "latin")
+		subPath = strings.ReplaceAll(subPath, tableToken, *lang)
+	}
 
 	// first, we check the cache for an existing entry
 	if cached, found := l.Retrieve(subPath); found {

d2common/d2resource/languages_map.go

@@ -0,0 +1,26 @@
+package d2resource
+
+func getLanguages() map[byte]string {
+	return map[byte]string{
+		0x00: "ENG", // (English)
+		0x01: "ESP", // (Spanish)
+		0x02: "DEU", // (German)
+		0x03: "FRA", // (French)
+		0x04: "POR", // (Portuguese)
+		0x05: "ITA", // (Italian)
+		0x06: "JPN", // (Japanese)
+		0x07: "KOR", // (Korean)
+		0x08: "SIN", //
+		0x09: "CHI", // (Chinese)
+		0x0A: "POL", // (Polish)
+		0x0B: "RUS", // (Russian)
+		0x0C: "ENG", // (English)
+	}
+}
+
+// GetLanguageLiteral returns string representation of language code
+func GetLanguageLiteral(code byte) string {
+	languages := getLanguages()
+
+	return languages[code]
+}

d2common/d2resource/resource_paths.go

@@ -2,19 +2,25 @@ package d2resource
 
 // Paths of the resources inside the mpq files.
 const (
+	// --- Language
+
+	LocalLanguage      = "/data/local/use"
+	LanguageFontToken  = "{LANG_FONT}" //nolint:gosec // this is just a format string
+	LanguageTableToken = "{LANG}"
+
 	// --- Screens ---
 
 	LoadingScreen = "/data/global/ui/Loading/loadingscreen.dc6"
 
 	// --- Video Paths ---
 
-	Act1Intro = "/data/local/video/eng/d2intro640x292.bik"
-	Act2Intro = "/data/local/video/eng/act02start640x292.bik"
-	Act3Intro = "/data/local/video/eng/act03start640x292.bik"
-	Act4Intro = "/data/local/video/eng/act04start640x292.bik"
-	Act4Outro = "/data/local/video/eng/act04end640x292.bik"
-	Act5Intro = "/data/local/video/eng/d2x_intro_640x292.bik"
-	Act5Outro = "/data/local/video/eng/d2x_out_640x292.bik"
+	Act1Intro = "/data/local/video/" + LanguageTableToken + "/d2intro640x292.bik"
+	Act2Intro = "/data/local/video/" + LanguageTableToken + "/act02start640x292.bik"
+	Act3Intro = "/data/local/video/" + LanguageTableToken + "/act03start640x292.bik"
+	Act4Intro = "/data/local/video/" + LanguageTableToken + "/act04start640x292.bik"
+	Act4Outro = "/data/local/video/" + LanguageTableToken + "/act04end640x292.bik"
+	Act5Intro = "/data/local/video/" + LanguageTableToken + "/d2x_intro_640x292.bik"
+	Act5Outro = "/data/local/video/" + LanguageTableToken + "/d2x_out_640x292.bik"
 
 	// --- Main Menu ---
 
@@ -128,9 +134,6 @@ const (
 	CursorDefault = "/data/global/ui/CURSOR/ohand.DC6"
 
 	// --- Fonts & Locale (strings) ---
-
-	LanguageFontToken    = "{LANG_FONT}" //nolint:gosec // this is just a format string
-	LanguageTableToken   = "{LANG}"
 	Font6                = "/data/local/FONT/" + LanguageFontToken + "/font6"
 	Font8                = "/data/local/FONT/" + LanguageFontToken + "/font8"
 	Font16               = "/data/local/FONT/" + LanguageFontToken + "/font16"

d2core/d2asset/asset_manager.go

@@ -4,6 +4,7 @@ import (
 	"fmt"
 	"image/color"
 
+	"github.com/OpenDiablo2/OpenDiablo2/d2common/d2resource"
 	"github.com/OpenDiablo2/OpenDiablo2/d2common/d2util"
 
 	"github.com/OpenDiablo2/OpenDiablo2/d2core/d2records"
@@ -34,6 +35,7 @@ const (
 )
 
 const (
+	defaultLanguage    = "ENG"
 	logPrefix          = "Asset Manager"
 	fmtLoadAsset       = "could not load file stream %s (%v)"
 	fmtLoadAnimation   = "loading animation %s with palette %s, draw effect %d"
@@ -108,6 +110,23 @@ func (am *AssetManager) FileExists(filePath string) (bool, error) {
 	return true, nil
 }
 
+// LoadLanguage loads language from resource path
+func (am *AssetManager) LoadLanguage(languagePath string) string {
+	languageByte, err := am.LoadFile(languagePath)
+	if err != nil {
+		am.Debugf("Unable to load language file: %s", err)
+		return defaultLanguage
+	}
+
+	languageCode := languageByte[0]
+	am.Debugf("Language code: %#02x", languageCode)
+
+	language := d2resource.GetLanguageLiteral(languageCode)
+	am.Infof("Language: %s", language)
+
+	return language
+}
+
 // LoadAnimation loads an Animation by its resource path and its palette path
 func (am *AssetManager) LoadAnimation(animationPath, palettePath string) (d2interface.Animation, error) {
 	return am.LoadAnimationWithEffect(animationPath, palettePath, d2enum.DrawEffectNone)

d2core/d2config/d2config.go

@@ -12,7 +12,6 @@ import (
 // Configuration defines the configuration for the engine, loaded from config.json
 type Configuration struct {
 	MpqLoadOrder    []string
-	Language        string
 	MpqPath         string
 	TicksPerSecond  int
 	FpsCap          int

d2core/d2config/defaults.go

@@ -16,7 +16,6 @@ func DefaultConfig() *Configuration {
 	)
 
 	config := &Configuration{
-		Language:        "ENG",
 		FullScreen:      false,
 		TicksPerSecond:  -1,
 		RunInBackground: true,

docs/index.html

@@ -62,14 +62,6 @@
 			</tr>
 			</thead>
 			<tbody>
-			<tr>
-				<td>Language</td>
-				<td>
-					Defines the locale the game is running in. For english this should be set to <code>ENG</code>. Other values include
-					(but are not limited to) <code>CHI</code>, <code>DEU</code>, <code>ESP</code>, <code>FRA</code>, <code>ITA</code>,
-					<code>JPN</code>, etc.
-				</td>
-			</tr>
 			<tr>
 				<td>FullScreen</td>
 				<td>Determines if the client is initially full screen or not. Do note that fullscreen mode can be toggled at any time