Unjum

A simple puzzle game for Android, written in F# 5 (.NET 5). It serves as a proof-of-concept application for Bluebonnet and BNA.

Bluebonnet is a light-weight .NET platform for Android Java which translates compiled .NET assemblies into Java classes. BNA is an Android-compatible implementation of XNA 4, written in C# and translated to Android Java using Bluebonnet.

This game was developed on Windows against XNA, and the resulting binary (i.e., the .NET DLL which is executable on Windows) was translated through Bluebonnet, combined with BNA and packaged into an Android APK. Check out the build script buildapk.bat and the dependent MSBuild project MakeAPK.project (in BNA).

Building

• Install XNA 4 on Windows. See Installing XNA on Visual Studio 2019 and Visual Studio 2019 XNA Setup.

• In Visual Studio (version 16.8 or later, for .NET 5 support), open the Play.sln solution, and build the ContentBuilder and then the Play projects.

• Binaries for Bluebonnet and BNA binaries are availabe as part of Bluebonnet release 0.11.

• Fix the paths in the build batch file buildapk.bat to point to the downloaded binaries, as well as your Android directories.

• Create a keystore in Android\my.keystore using the Java signtool program:

    "%JAVA_HOME%\bin\keytool.exe" -genkey -v -keystore Android\my.keystore -alias MyAlias -keyalg RSA -keysize 2048 -validity 10000
  

• Write the keystore password into Android\my.keypass without a terminating newline.

• Build the APK by running Android\buildapk.bat. Note that after building, this batch script pushes the generated APK to an active instance of the Android emulator.

Additional links:

• Play store link

• Bluebonnet GitHub repository

• Bluebonnet home page

• BNA GitHub repository

• Home page for Unjum