Fixed Steam version not being able to show the used library licenses (R…

…evolutionary-Games#4437)

this is fixed by now including the top level LICENSE.txt file and also by adding an extra clarification file to say that the license file doesn't apply to the Steam version in its entirety

assets/README.txt

@@ -20,6 +20,9 @@ The following fonts are licensed under the SIL Open Font License
 
 SIL license text is included in "OFL.txt" file.
 
+In a packaged version of the game the assets may be included inside an
+archive file format instead of as separate plain files.
+
 
 Social License Info
 -------------------

doc/steam_license_notice.txt

@@ -0,0 +1,6 @@
+The Steam release of Thrive may contain LICENSE.txt file at the root
+of the game data archive(s) or the game's folder. This file is
+included as it includes licensing information of the libraries used by
+Thrive, which is used when the effective license text is shown by the
+game program. However, the licensing terms for Thrive contained in that
+file are overwritten by what is said in steam_license_readme.txt file.

export_presets.cfg

@@ -190,7 +190,7 @@ platform="Linux/X11"
 runnable=false
 custom_features="steam"
 export_filter="all_resources"
-include_filter="*.json, doc/*.txt, assets/*.txt, *.yml"
+include_filter="*.json, doc/*.txt, assets/*.txt, *.yml, LICENSE.txt"
 exclude_filter="test/*, builds/*, build/*, build-debug/*, *mono_crash*, fast_build_mode.json, docker/*, Scripts/*, RevolutionaryGamesCommon/*"
 export_path="builds/Thrive.x86_64"
 script_export_mode=1
@@ -215,7 +215,7 @@ platform="Windows Desktop"
 runnable=false
 custom_features="steam"
 export_filter="all_resources"
-include_filter="*.json, doc/*.txt, assets/*.txt, *.yml"
+include_filter="*.json, doc/*.txt, assets/*.txt, *.yml, LICENSE.txt"
 exclude_filter="test/*, builds/*, build/*, build-debug/*, *mono_crash*, fast_build_mode.json, docker/*, Scripts/*, RevolutionaryGamesCommon/*"
 export_path="builds/Thrive.exe"
 script_export_mode=1

src/gui_common/dialogs/LicensesDisplay.cs

@@ -27,7 +27,6 @@ public static string LoadSteamLicenseFile()
         var steam = LoadFile(Constants.STEAM_LICENSE_FILE);
         var normal = LoadFile(Constants.LICENSE_FILE);
 
-        // var regex = new Regex(".*(^In addition to Godot Engine, Thrive uses the following.+\\z)",
         var regex = new Regex(".*(In addition to Godot Engine, Thrive uses the following.+)$",
             RegexOptions.Singleline | RegexOptions.IgnoreCase);
 
@@ -39,6 +38,10 @@ public static string LoadSteamLicenseFile()
         {
             extraText = match.Groups[1].Value;
         }
+        else
+        {
+            GD.PrintErr("Failed to insert Steam version used library licenses list");
+        }
 
         return steam + extraText;
     }