- automated the SmallFont selection based on a filter string in the language table.

src/g_cvars.cpp

@@ -38,6 +38,8 @@
 #include "g_game.h"
 #include "gstrings.h"
 #include "i_system.h"
+#include "v_font.h"
+#include "utf8.h"
 
 CVAR (Bool, cl_spreaddecals, true, CVAR_ARCHIVE)
 CVAR(Bool, var_pushers, true, CVAR_SERVERINFO);
@@ -134,13 +136,54 @@ CUSTOM_CVAR(Float, teamdamage, 0.f, CVAR_SERVERINFO | CVAR_NOINITCALL)
 
 bool generic_ui;
 
+bool CheckFontComplete(FFont *font)
+{
+	// Also check if the SmallFont contains all characters this language needs.
+	// If not, switch back to the original one.
+	const uint8_t* checkstr = (const uint8_t*)GStrings["REQUIRED_CHARACTERS"];
+	bool incomplete = false;
+
+	if (!checkstr) return true;
+	while (int c = GetCharFromString(checkstr))
+	{
+		bool redirected;
+		int cc = font->GetCharCode(c, true);
+		if (c != cc && (c != 0x1e9e || cc != 0xdf))
+		{
+			return false;
+		}
+	}
+	return true;
+}
+
 void UpdateGenericUI(bool cvar)
 {
 	auto switchstr = GStrings["USE_GENERIC_FONT"];
 	generic_ui = (cvar || (switchstr && strtoll(switchstr, nullptr, 0)));
+	if (!generic_ui)
+	{
+		// Use the mod's SmallFont if it is complete.
+		// Otherwise use the stock Smallfont if it is complete.
+		// If none is complete, fall back to the VGA font.
+		// The font being set here will be used in 3 places: Notifications, centered messages and menu confirmations.
+		if (CheckFontComplete(SmallFont))
+		{
+			AlternativeSmallFont = SmallFont;
+		}
+		else if (OriginalSmallFont && CheckFontComplete(OriginalSmallFont))
+		{
+			AlternativeSmallFont = OriginalSmallFont;
+		}
+		else
+		{
+			AlternativeSmallFont = NewSmallFont;
+		}
+
+		// Todo: Do the same for the BigFont
+	}
 }
 
-CUSTOM_CVAR(Bool, ui_generic, false, 0) // This is for allowing to test the generic font system with all languages
+CUSTOM_CVAR(Bool, ui_generic, false, CVAR_NOINITCALL) // This is for allowing to test the generic font system with all languages
 {
 	UpdateGenericUI(self);
 }

src/gamedata/fonts/v_font.cpp

@@ -71,6 +71,7 @@
 // PRIVATE FUNCTION PROTOTYPES ---------------------------------------------
 
 static int TranslationMapCompare (const void *a, const void *b);
+void UpdateGenericUI(bool cvar);
 
 // EXTERNAL DATA DECLARATIONS ----------------------------------------------
 
@@ -1601,6 +1602,7 @@ void V_InitFonts()
 		BigFont = NewSmallFont;
 	}
 	AlternativeSmallFont = OriginalSmallFont;
+	UpdateGenericUI(false);
 }
 
 void V_ClearFonts()