Fedora 35 : Roblox Player and Roblox Studio with Grapejuice.

In today's tutorial, I will show you how to install and play Roblox on the Linux Fedora 35 distribution using Grapejuice software.

The Grapejuice software installs protocol handlers to open games from the Roblox website and file handlers to open place files. It also provides a management interface for installing and launching Roblox.

For this, you will need to have a computer with the necessary hardware requirements for this online game.

I tested it on the old HP Compaq 6710b laptop on which I installed Fedora version 35 and it worked very hard.

Here are the Linux commands I used to install.

[mythcat@fedora ~]$ git clone https://gitlab.com/brinkervii/grapejuice
Cloning into 'grapejuice'...
warning: redirecting to https://gitlab.com/brinkervii/grapejuice.git/
remote: Enumerating objects: 6632, done.
remote: Counting objects: 100% (1426/1426), done.
remote: Compressing objects: 100% (426/426), done.
remote: Total 6632 (delta 1019), reused 1375 (delta 983), pack-reused 5206
Receiving objects: 100% (6632/6632), 3.89 MiB | 3.20 MiB/s, done.
Resolving deltas: 100% (4388/4388), done.
[mythcat@fedora ~]$ cd grapejuice/
[mythcat@fedora grapejuice]$ ls
ci_scripts     pylintrc                   setup.cfg
documentation  README.md                  setup.py
install.py     requirements.dev.txt       src
LICENSE.md     requirements.optional.txt  tests
MANIFEST.in    requirements.txt           troubleshooter.py

[mythcat@fedora grapejuice]$ sudo su
[sudo] password for mythcat:
[root@fedora grapejuice]# dnf install wine
...
Total                                           6.0 MB/s | 634 MB     01:45 
...
Complete!
[root@fedora grapejuice]# exit
exit
[mythcat@fedora grapejuice]$ ./install.py
...

After installation, you can search and find the installation and Roblox Player and Roblox Studio.

Fedora 33 : Unity FPS Microgame.

Today I tested the FPS Microgame from learning area of Unity 3D with Fedora linux distro.

The project works great even my hardware is old.

This is an screenshot of the running process of the project.

Fedora 33 : Unity Platformer Microgame 2D.

This Microgame Template is a classic 2D platform game that you can mod and make your own. Check out the Creative Mods to tweak the project and add your own levels, while learning the basics of Unity. Viewing from the Learn tab in the Unity Hub? Click Download Project > Open Project to automatically open it in Unity. Viewing from the Unity Learn website? Simply go to the Learn tab in the Unity Hub and search for this Microgame, or manually import it via the Asset Store link below.

I download the Unity Editor and Unity Hub AppImage.

I run the UnityHub.AppImage and I set the path of Unity Editor into settings area.

I login with my Unity account and on learning area in UnityHub application I download the Platformer Microgame.

I select to follow the tutorial on Unity I.D.E. environment.

You can see in the next screenshot how this works:

Fedora 33 : Roblox and Wine.

Because I tried to install this platform, I will show you what works and what doesn't. 

At this moment Roblox Player cannot be run with Wine. 

I tested two ways to run it.

First is the roblox-linux-wrapper and the second is the direct way to install RobloxPlayerLauncher.exe.

The roblox-linux-wrapper works but you will get this error. 

The install process is simple:

[mythcat@desk ~]$ git clone https://github.com/roblox-linux-wrapper/roblox-linux-wrapper.git
Cloning into 'roblox-linux-wrapper'...
remote: Enumerating objects: 17, done.
remote: Counting objects: 100% (17/17), done.
remote: Compressing objects: 100% (16/16), done.
remote: Total 1471 (delta 7), reused 4 (delta 1), pack-reused 1454
Receiving objects: 100% (1471/1471), 380.74 KiB | 274.00 KiB/s, done.
Resolving deltas: 100% (901/901), done.

[mythcat@desk ~]$ whereis wine
wine: /usr/bin/wine /usr/lib/wine /usr/lib64/wine /usr/share/wine /usr/share/man/man1/wine.1.gz

[mythcat@desk ~]$ roblox-linux-wrapper/rlw
> main: Sourcing /home/mythcat/roblox-linux-wrapper/data/rlw-core.sh
> wineinitialize: sourcing /home/mythcat/.rlw/wine_choice

Another way is to download the EXE file and run it with Wine.

[mythcat@desk ~]$ wget http://setup.rbxcdn.com/RobloxPlayerLauncher.exe
wine RobloxPlayerLauncher.exe 
...

You can try to start a game on browser , select the Roblox Player and will get the same error. A good news is about Roblox Studio, this works very well:

[mythcat@desk ~]$ wget https://setup.rbxcdn.com/RobloxStudioLauncherBeta.exe
[mythcat@desk ~]$ wine RobloxStudioLauncherBeta.exe

My video card NVIDIA Corporation GT218 [GeForce 210] (rev a2) is not very good with this application , but works.

Fedora 33 : Create a simple GUI Button on Unity 3D.

It is very useful to create applications in the Fedora 33 Linux distribution with the Unity 3D game engine.

In today's tutorial, I will show you how to build the simplest GUI with C# and a dynamic button.

To create a button dynamically you need to use GUI.Button.

Open Unity 3D new project in your Fedora 33 distro.

Add a new Game Object by right click and select Create Empty.

Select Game Object use Add Component to add a New script and name it create_button.

Open it and add this source code:

using UnityEngine;
using UnityEngine.UI;
using System.Collections;
 
public class create_button : MonoBehaviour {
   
    
    void OnGUI() 
        {    
            if (GUI.Button(new Rect(10, 10, 300, 20), "Test - Dynamically button")) 
            {    
                Debug.Log("Test button");
            }
            
        }
}

If you run the Unity project you will see a basic Unity 3D button, see the next image:

Fedora 33 : Create a simple AvaloniaUI window.

This tutorial is about Avalonia UI.

Avalonia is a cross-platform XAML-based UI framework providing a flexible styling system and supporting a wide range of Operating Systems such as Windows via .NET Framework and .NET Core, Linux via Xorg, macOS.

I install avalonia dotnet templates from here:

[mythcat@desk CSharpProjects]$ git clone https://github.com/AvaloniaUI/avalonia-dotnet-templates --recursive
Cloning into 'avalonia-dotnet-templates'...
remote: Enumerating objects: 37, done.
remote: Counting objects: 100% (37/37), done.
remote: Compressing objects: 100% (28/28), done.
remote: Total 379 (delta 14), reused 19 (delta 7), pack-reused 342
Receiving objects: 100% (379/379), 147.23 KiB | 881.00 KiB/s, done.
Resolving deltas: 100% (202/202), done.
[mythcat@desk CSharpProjects]$ ls
aspnetapp  avalonia-dotnet-templates  HelloWorld  myapp001  MyGame001  Todo
[mythcat@desk CSharpProjects]$ dotnet new --install avalonia-dotnet-templates 
...

Create a default window example with AvaloniaUI:

[mythcat@desk CSharpProjects]$ dotnet new avalonia.app -o MyAppAvalonia
The template "Avalonia .NET Core App" was created successfully.
[mythcat@desk CSharpProjects]$ cd MyAppAvalonia/
[mythcat@desk MyAppAvalonia]$ dotnet add package Avalonia
...
[mythcat@desk MyAppAvalonia]$ dotnet add package Avalonia.Desktop
...
[mythcat@desk MyAppAvalonia]$ ls
App.xaml  App.xaml.cs  MainWindow.xaml  MainWindow.xaml.cs  MyAppAvalonia.csproj  nuget.config  Program.cs

Publish this example:

[mythcat@desk MyAppAvalonia]$ dotnet publish --configuration Release --runtime fedora.33-x64 --self-contained false
Microsoft (R) Build Engine version 16.4.0+e901037fe for .NET Core
Copyright (C) Microsoft Corporation. All rights reserved.

Restore completed in 3.86 sec for /home/mythcat/CSharpProjects/MyAppAvalonia/MyAppAvalonia.csproj.
MyAppAvalonia -> /home/mythcat/CSharpProjects/MyAppAvalonia/bin/Release/netcoreapp3.0/fedora.33-x64/MyAppAvalonia.dll
MyAppAvalonia -> /home/mythcat/CSharpProjects/MyAppAvalonia/bin/Release/netcoreapp3.0/fedora.33-x64/publish/

The last step is the run:

[mythcat@desk MyAppAvalonia]$ dotnet /home/mythcat/CSharpProjects/MyAppAvalonia/bin/Release/netcoreapp3.0/
fedora.33-x64/publish/MyAppAvalonia.dll 

This will open a window build with AvaloniaUI.

Fedora 33 : Build and publish with .NET Core SDK .

In this tutorial I will show you how can use .NET Core SDK to build and run a simple MyGame001 application from the last tutorial.
Let's go to the project and get some infos:

[mythcat@desk ~]$ cd CSharpProjects/
[mythcat@desk CSharpProjects]$ cd MyGame001/
[mythcat@desk MyGame001]$ dotnet --info
.NET Core SDK (reflecting any global.json):
 Version:   3.1.109
 Commit:    32ced2d411

Runtime Environment:
 OS Name:     fedora
 OS Version:  33
 OS Platform: Linux
 RID:         fedora.33-x64
 Base Path:   /usr/lib64/dotnet/sdk/3.1.109/

Host (useful for support):
  Version: 3.1.9
  Commit:  774fc3d6a9

.NET Core SDKs installed:
  3.1.109 [/usr/lib64/dotnet/sdk]

.NET Core runtimes installed:
  Microsoft.AspNetCore.App 3.1.9 [/usr/lib64/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.NETCore.App 3.1.9 [/usr/lib64/dotnet/shared/Microsoft.NETCore.App]

To install additional .NET Core runtimes or SDKs:
  https://aka.ms/dotnet-download

The next command will create MyGame001.dll.

[mythcat@desk MyGame001]$ dotnet publish --configuration Release --runtime fedora.33-x64 --self-contained false
Microsoft (R) Build Engine version 16.4.0+e901037fe for .NET Core
Copyright (C) Microsoft Corporation. All rights reserved.

  Restore completed in 50.58 ms for /home/mythcat/CSharpProjects/MyGame001/MyGame001.csproj.
  MyGame001 -> /home/mythcat/CSharpProjects/MyGame001/bin/Release/netcoreapp3.1/fedora.33-x64/MyGame001.dll
  MyGame001 -> /home/mythcat/CSharpProjects/MyGame001/bin/Release/netcoreapp3.1/fedora.33-x64/publish/

Now you can run it with dotnet command:

[mythcat@desk MyGame001]$ dotnet /home/mythcat/CSharpProjects/MyGame001/bin/Release/netcoreapp3.1/fedora.33-x64/MyGame001.dll

You can simply run it like an Linux application:

[mythcat@desk MyGame001]$ /home/mythcat/CSharpProjects/MyGame001/bin/Release/netcoreapp3.1/fedora.33-x64/publish/MyGame001 

Fedora 33 : Install and test with MonoGame .NET library .

MonoGame is a simple and powerful .NET library for creating games for desktop PCs, video game consoles, and mobile devices.
Today I tested with Fedora 33.
First let's install this templates for .NET Core CLI and the Rider IDE.:

[mythcat@desk ~]$ dotnet new --install MonoGame.Templates.CSharp

Welcome to .NET Core 3.1!
---------------------
SDK Version: 3.1.109

----------------
Explore documentation: https://aka.ms/dotnet-docs
Report issues and find source on GitHub: https://github.com/dotnet/core
Find out what's new: https://aka.ms/dotnet-whats-new
Learn about the installed HTTPS developer cert: https://aka.ms/aspnet-core-https
Use 'dotnet --help' to see available commands or visit: https://aka.ms/dotnet-cli-docs
Write your first app: https://aka.ms/first-net-core-app
--------------------------------------------------------------------------------------
Getting ready...
  Restore completed in 2.76 sec for /home/mythcat/.templateengine/dotnetcli/v3.1.109/scratch/restore.csproj.
...

Install MGCB Editor is a tool for editing .mgcb files:

[mythcat@desk ~]$ dotnet tool install --global dotnet-mgcb-editor
You can invoke the tool using the following command: mgcb-editor
Tool 'dotnet-mgcb-editor' (version '3.8.0.1641') was successfully installed.
[mythcat@desk ~]$ mgcb-editor --register
Installing icon...
Installation complete!
Installing mimetype...
gtk-update-icon-cache: No theme index file.
Installation complete!
Installing application...
Installation complete!

Registered MGCB Editor!

Install C# extension for code editor:

[mythcat@desk ~]$ code --install-extension ms-dotnettools.csharp
Installing extensions...
Extension 'ms-dotnettools.csharp' is already installed.

The next step is to create new MonoGame projects:

[mythcat@desk ~]$ cd CSharpProjects/
[mythcat@desk CSharpProjects]$ dotnet new mgdesktopgl -o MyGame001
The template "MonoGame Cross-Platform Desktop Application (OpenGL)" was created successfully.

An update for template pack MonoGame.Templates.CSharp::3.8.0.1641 is available.
    install command: dotnet new -i MonoGame.Templates.CSharp::3.8.0.1641 

I run the default template and working well:

[mythcat@desk CSharpProjects]$ cd MyGame001
[mythcat@desk MyGame001]$ ls
app.manifest  Content  Game1.cs  Icon.bmp  Icon.ico  MyGame001.csproj  Program.cs
[mythcat@desk MyGame001]$ dotnet run Program.cs 

The default source code from Program.cs file is this:

using System;

namespace MyGame001
{
    public static class Program
    {
        [STAThread]
        static void Main()
        {
            using (var game = new Game1())
                game.Run();
        }
    }
} 

Fedora 32 : Can be better? part 016.

Today I tested the Unity 3D version 2020 on Linux Fedora 32.
Maybe it would be better to integrate Unity 3D or Unity Hub in Fedora repo just like other useful software like Blender 3D, GIMP.
It will improve the user experience and attract new users and developers for this distro.
I download the AppImage from Unity website and I run with these commands:

[mythcat@desk Downloads]$ chmod a+x UnityHub.AppImage 
[mythcat@desk Downloads]$ ./UnityHub.AppImage 
r: 0
License accepted
...

Fedora 32 : Create games with Phaser Editor 2D.

Today I install Phaser Editor 2D on Fedora 32, you can download it from the official website. I create an account and I download the archive for Linux. After unarchive I used very simple:

[mythcat@desk ~]$ cd PhaserEditor2D/
[mythcat@desk PhaserEditor2D]$ ls
editor  PhaserEditor2D  README.TXT  templates
[mythcat@desk PhaserEditor2D]$ ./PhaserEditor2D 
Phaser Editor 2D - v3.7.1

=> Running in Free mode (only 70 files per project allowed)
=> Purchase a license: https://gum.co/phasereditor

2020/10/03 16:17:51 Loading workspace at /home/mythcat/PhaserEditor2D_Projects
2020/10/03 16:17:51 Listening at http://127.0.0.1:1959/editor

Play IDE online : https://play.phasereditor2d.com/
Documentation   : https://help.phasereditor2d.com/v3
File bugs/ideas : https://github.com/PhaserEditor2D/PhaserEditor2D-v3/
Keep in contact : https://twitter.com/PhaserEditor2D

=> Open the web browser at http://127.0.0.1:1959/editor

2020/10/03 16:17:52 No updates available.

Phaser Editor 2D is a commercial IDE to develop video-games. It is delivered as an offline product and users can run it for free (with certain limitations) or can purchase a license key to unlock all features. Phaser Editor 2D version 3, the latest, is a complete new software based on web technologies. So we created Play Phaser Editor 2D, a small service to allow Phaser Editor 2D license owners, to run the editor and create small projects in the cloud. However, in the future, we will provide a different cloud service with options for storage, collaboration, publishing, integration with other services and payment. These are the Play Phaser Editor 2D available plans: Free Plan and Premium Plan About Free Plan: Running the FREE PLAN 0B/50MB of storage is used 59 days before expiration date The Premium Plan comes with these options:

• One Year License - 30$ Valid for one year after the purchase. Phaser Editor 2D Team email support. Write to developers@phasereditor2d.com. The option to refund in the first month after the purchase.
• Two Years License - 45$ Valid for two years after the purchase. Phaser Editor 2D Team email support. Write to developers@phasereditor2d.com. The option to refund in the first month after the purchase.
• Lifetime License - 75$ Never expires. Phaser Editor 2D Team email support. Write to developers@phasereditor2d.com. The option to refund in the first month after the purchase.
• Two Years Team License - 125$ 5 developers allowed. Valid for two years. Phaser Editor 2D Team email support. Write to developers@phasereditor2d.com. The option to refund in the first month after the purchase.

This is a video tutorial from official youtube channel:

Fedora 31 : Install Unity 3D on Fedora Linux.

If you want to install the Unity 3D software on Fedora 31 Linux distro then you can read my tutorial from this webpage.
To run Unity software you need to have one good hardware.
This install require to upload the license file even you use a free or pro license.

The saga of build Librelancer over Mono, NuGET and Cake.

I wrote this article because it is a good way to understand beyond the errors encountered for Mono, NuGet and Cake.
I started the day with Fedora 29 installing the old Librelancer game:
Librelancer is a cross-platform, open source game engine re-implementing the 2003 space trading and combat game Freelancer. The engine comes with an editor for several of the game's file formats called LancerEdit.
See the official webpage.
Some errors are temporarily fixed, see:

TERM=xterm.

This error refers an issue open on Feb 13,2018,12:52 PM GMT+2, see here.
However, this is a great way to go through Fedora installations to avoid searching for GitHub issues and issues.
The default install of Cake with the version 0.30.0 will not solve the last error:

[root@desk Librelancer]# nuget  install Cake -Version 0.30.0 
Installing 'Cake 0.30.0'.
Successfully installed 'Cake 0.30.0'. 

Let's hope that problems will solve with time.
Below are the correct steps for going through the installation until the last error.

[mythcat@desk ~]$ git clone --depth=50 --branch=master https://github.com/Librelancer/Librelancer.git 
Cloning into 'Librelancer'...
remote: Enumerating objects: 3085, done.
remote: Counting objects: 100% (3085/3085), done.
remote: Compressing objects: 100% (1414/1414), done.
remote: Total 3085 (delta 2131), reused 2295 (delta 1639), pack-reused 0
Receiving objects: 100% (3085/3085), 7.97 MiB | 2.79 MiB/s, done.
Resolving deltas: 100% (2131/2131), done.
Checking out files: 100% (863/863), done.
[mythcat@desk ~]$ cd Librelancer/
[mythcat@desk Librelancer]$ ll
total 48
-rw-rw-r--.  1 mythcat mythcat 4912 Dec  3 11:23 build.cake
-rw-rw-r--.  1 mythcat mythcat 7439 Dec  3 11:23 build.ps1
-rwxrwxr-x.  1 mythcat mythcat 3210 Dec  3 11:23 build.sh
-rw-rw-r--.  1 mythcat mythcat   33 Dec  3 11:23 cake.config
-rw-rw-r--.  1 mythcat mythcat 1029 Dec  3 11:23 CMakeLists.txt
-rw-rw-r--.  1 mythcat mythcat 2768 Dec  3 11:23 Credits.txt
drwxrwxr-x.  4 mythcat mythcat   87 Dec  3 11:23 deps
drwxrwxr-x.  4 mythcat mythcat 4096 Dec  3 11:23 editoricons
drwxrwxr-x. 12 mythcat mythcat  208 Dec  3 11:23 extern
-rw-rw-r--.  1 mythcat mythcat 1166 Dec  3 11:23 LICENSE
-rw-rw-r--.  1 mythcat mythcat 1877 Dec  3 11:23 README.md
drwxrwxr-x.  2 mythcat mythcat   75 Dec  3 11:23 scripts
drwxrwxr-x. 15 mythcat mythcat 4096 Dec  3 11:23 src
drwxrwxr-x.  2 mythcat mythcat   29 Dec  3 11:23 tools

[mythcat@desk Librelancer]$ git submodule update --init --recursive
Submodule 'extern/BulletSharpPInvoke' (https://github.com/AndresTraks/BulletSharpPInvoke) registered for path 
'extern/BulletSharpPInvoke'
Submodule 'extern/Collada141' (https://github.com/Librelancer/Collada141) registered for path 
'extern/Collada141'
Submodule 'extern/FontConfigSharp' (https://github.com/CallumDev/FontConfigSharp.git) registered for path 
'extern/FontConfigSharp'
Submodule 'extern/ImGui.NET' (https://github.com/mellinoe/ImGui.NET) registered for path 'extern/ImGui.NET'
Submodule 'extern/SharpFont' (https://github.com/Robmaister/SharpFont.git) registered for path 'extern/SharpFont'
Submodule 'extern/StbSharp' (https://github.com/rds1983/StbSharp) registered for path 'extern/StbSharp'
Submodule 'extern/bullet3' (https://github.com/bulletphysics/bullet3) registered for path 'extern/bullet3'
Submodule 'extern/cimgui' (https://github.com/Extrawurst/cimgui) registered for path 'extern/cimgui'
Submodule 'extern/lidgren-network-gen3' (https://github.com/lidgren/lidgren-network-gen3) registered for path 
'extern/lidgren-network-gen3'
Submodule 'extern/nvidia-texture-tools' (https://github.com/castano/nvidia-texture-tools) registered for path 
'extern/nvidia-texture-tools'
Cloning into '/home/mythcat/Librelancer/extern/BulletSharpPInvoke'...
Cloning into '/home/mythcat/Librelancer/extern/Collada141'...
Cloning into '/home/mythcat/Librelancer/extern/FontConfigSharp'...
Cloning into '/home/mythcat/Librelancer/extern/ImGui.NET'...
Cloning into '/home/mythcat/Librelancer/extern/SharpFont'...
...
[mythcat@desk Librelancer]$ export GITHUB_TOKEN=[secure]
Check your mono version 
[mythcat@desk Librelancer]$ mono --version
Mono JIT compiler version 4.8.0 (Stable 4.8.0.520/8f6d0f6 Wed Sep 20 21:27:10 UTC 2017)
Copyright (C) 2002-2014 Novell, Inc, Xamarin Inc and Contributors. www.mono-project.com
    TLS:           __thread
    SIGSEGV:       normal
    Notifications: epoll
    Architecture:  amd64
    Disabled:      none
    Misc:          softdebug 
    LLVM:          supported, not enabled.
    GC:            sgen

[root@desk Librelancer]# rpm --import https://packages.microsoft.com/keys/microsoft.asc
[root@desk Librelancer]# wget -q https://packages.microsoft.com/config/fedora/27/prod.repo
[root@desk Librelancer]# ls
build.cake  cake.config     deps         LICENSE    scripts
build.ps1   CMakeLists.txt  editoricons  prod.repo  src
build.sh    Credits.txt     extern       README.md  tools
[root@desk Librelancer]# vim prod.repo 
[root@desk Librelancer]# mv prod.repo /etc/yum.repos.d/microsoft-prod.repo
[root@desk Librelancer]# chown root:root /etc/yum.repos.d/microsoft-prod.repo
[root@desk Librelancer]# dnf update
packages-microsoft-com-prod                      48 kB/s | 156 kB     00:03    
Last metadata expiration check: 0:00:01 ago on Mon 03 Dec 2018 11:52:11 AM EET.
Dependencies resolved.
Nothing to do.
Complete!

[root@desk Librelancer]# dnf search dotnet-sdk
Last metadata expiration check: 0:01:05 ago on Mon 03 Dec 2018 11:52:11 AM EET.
=========================== Name Matched: dotnet-sdk ===========================
dotnet-sdk-2.1.x86_64 : Microsoft .NET Core SDK 2.1.500 2.1.500
dotnet-sdk-2.1.200.x86_64 : Microsoft .NET Core SDK - 2.1.200 2.1.200
dotnet-sdk-2.1.201.x86_64 : Microsoft .NET Core SDK - 2.1.201 2.1.201
dotnet-sdk-2.1.202.x86_64 : Microsoft .NET Core SDK - 2.1.202 2.1.202
dotnet-sdk-2.1.300-rc1-008673.x86_64 : Microsoft .NET Core SDK 2.1.300 - rc1
                                     : 2.1.300-rc1-008673

[root@desk Librelancer]# dnf install dotnet-sdk-2.1.202.x86_64 
Last metadata expiration check: 0:02:18 ago on Mon 03 Dec 2018 11:52:11 AM EET.
Dependencies resolved.
================================================================================
 Package                 Arch    Version     Repository                    Size
================================================================================
Installing:
 dotnet-sdk-2.1.202      x86_64  2.1.202-1   packages-microsoft-com-prod   96 M
Installing dependencies:
 aspnetcore-store-2.0.0  x86_64  2.0.0-1     packages-microsoft-com-prod   24 M
 aspnetcore-store-2.0.3  x86_64  2.0.3-1     packages-microsoft-com-prod  7.9 M
 aspnetcore-store-2.0.5  x86_64  2.0.5-1     packages-microsoft-com-prod  1.6 M
 aspnetcore-store-2.0.6  x86_64  2.0.6-1     packages-microsoft-com-prod  9.3 M
 aspnetcore-store-2.0.7  x86_64  2.0.7-1     packages-microsoft-com-prod   24 k
 aspnetcore-store-2.0.8  x86_64  2.0.8-1     packages-microsoft-com-prod  8.5 M
 aspnetcore-store-2.0.9  x86_64  2.0.9-1     packages-microsoft-com-prod  956 k
 dotnet-host             x86_64  2.1.6-1     packages-microsoft-com-prod   45 k
 dotnet-hostfxr-2.0.9    x86_64  2.0.9-1     packages-microsoft-com-prod  182 k
 dotnet-runtime-2.0.9    x86_64  2.0.9-1     packages-microsoft-com-prod   24 M

Transaction Summary
================================================================================
Install  11 Packages

Total download size: 173 M
Installed size: 173 M
Is this ok [y/N]: y
...
Complete!

This will fix a bug : 
Unhandled Exception:
System.TypeInitializationException: The type initializer for 'System.Console' threw an exception.
[mythcat@desk Librelancer]$ TERM=xterm


[mythcat@desk Librelancer]$ ./build.sh 
Could not load file or assembly 'Microsoft.Build.Utilities.v4.0, Version=4.0.0.0, Culture=neutral, 
PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies.
Could not load file or assembly 'Microsoft.Build.Utilities.v4.0, Version=4.0.0.0, Culture=neutral, 
PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies.

[root@desk Librelancer]# dnf install nuget.x86_64 

The dotnet come with this:

[root@desk Librelancer]# dotnet --info
.NET Core SDK (reflecting any global.json):
 Version:   2.1.500
 Commit:    b68b931422

Runtime Environment:
 OS Name:     fedora
 OS Version:  29
 OS Platform: Linux
 RID:         fedora.29-x64
 Base Path:   /usr/share/dotnet/sdk/2.1.500/

Host (useful for support):
  Version: 2.1.6
  Commit:  3f4f8eebd8

.NET Core SDKs installed:
  2.1.202 [/usr/share/dotnet/sdk]
  2.1.500 [/usr/share/dotnet/sdk]

.NET Core runtimes installed:
  Microsoft.AspNetCore.All 2.1.6 [/usr/share/dotnet/shared/Microsoft.AspNetCore.All]
  Microsoft.AspNetCore.App 2.1.6 [/usr/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.NETCore.App 2.0.9 [/usr/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 2.1.6 [/usr/share/dotnet/shared/Microsoft.NETCore.App]

To install additional .NET Core runtimes or SDKs:
  https://aka.ms/dotnet-download

Let's test again:
[mythcat@desk Librelancer]$ ./build.sh 
Feeds used:
  https://api.nuget.org/v3/index.json

Restoring NuGet package Cake.0.30.0.
WARNING: Unable to find version '0.30.0' of package 'Cake'.
  https://api.nuget.org/v3/index.json: Unable to load the service index for source https://api.nuget.org/v3/index.json.
  An error occurred while sending the request
  Error: TrustFailure (Ssl error:1000007d:SSL routines:OPENSSL_internal:CERTIFICATE_VERIFY_FAILED)
  Ssl error:1000007d:SSL routines:OPENSSL_internal:CERTIFICATE_VERIFY_FAILED

Unable to find version '0.30.0' of package 'Cake'.
  https://api.nuget.org/v3/index.json: Unable to load the service index for source https://api.nuget.org/v3/index.json.
  An error occurred while sending the request
  Error: TrustFailure (Ssl error:1000007d:SSL routines:OPENSSL_internal:CERTIFICATE_VERIFY_FAILED)
  Ssl error:1000007d:SSL routines:OPENSSL_internal:CERTIFICATE_VERIFY_FAILED

Could not restore NuGet tools.

[root@desk Librelancer]# cat /etc/ssl/certs/* >ca-bundle.crt
[root@desk Librelancer]# TERM=xterm
[root@desk Librelancer]# cert-sync ca-bundle.crt
Mono Certificate Store Sync - version 4.8.0.0
Populate Mono certificate store from a concatenated list of certificates.
Copyright 2002, 2003 Motus Technologies. Copyright 2004-2008 Novell. BSD licensed.

Importing into legacy system store:
I already trust 0, your new list has 129
Certificate added: CN=ACCVRAIZ1, OU=PKIACCV, O=ACCV, C=ES
Certificate added: C=ES, O=FNMT-RCM, OU=AC RAIZ FNMT-RCM
Certificate added: C=IT, L=Milan, O=Actalis S.p.A./03358520967, CN=Actalis Authentication Root CA
Certificate added: C=SE, O=AddTrust AB, OU=AddTrust External TTP Network, CN=AddTrust External CA Root
...
129 new root certificates were added to your trust store.
Import process completed.
[root@desk Librelancer]# rm ca-bundle.crt
rm: remove regular file 'ca-bundle.crt'? y

[mythcat@desk Librelancer]$ ./build.sh 
Feeds used:
  https://api.nuget.org/v3/index.json

Restoring NuGet package Cake.0.30.0.
  GET https://api.nuget.org/v3-flatcontainer/cake/0.30.0/cake.0.30.0.nupkg
  OK https://api.nuget.org/v3-flatcontainer/cake/0.30.0/cake.0.30.0.nupkg 53ms
Installing Cake 0.30.0.
Adding package 'Cake.0.30.0' to folder '/home/mythcat/Librelancer/tools'
Added package 'Cake.0.30.0' to folder '/home/mythcat/Librelancer/tools'
Install failed. Rolling back...
Error: One or more errors occurred.
    Could not load type 'NuGet.Packaging.PackageArchiveReader' from assembly 'NuGet.Packaging, 
Version=4.7.0.5, Culture=neutral, PublicKeyToken=31bf3856ad364e35'.

Fedora 28 : Strife another golang game framework.

Today I tested this 2D game framework named Strife.
You can read more about this from the official website.
The development team tells us:
  "This a work in progress. It provides a very minimal toolset for rendering shapes, images, and text as well as capturing user input."
This game framework uses SDL2 libraries.
Strife is open source and available under the MIT license.
Let's start with installation into Fedora 28 distro.

[root@desk mythcat]# dnf install SDL2-devel.x86_64
[root@desk mythcat]# dnf install SDL2_ttf-devel.x86_64 
[root@desk mythcat]# dnf install SDL2_image-devel.x86_64 
[mythcat@desk ~]$ go get github.com/felixangell/strife
[mythcat@desk ~]$ cd $GOPATH/src/github.com/felixangell/strife

I test one example from installation folder with particles:

[mythcat@desk strife]$ cd example/particles
[mythcat@desk particles]$ go run particles.go
2018/10/04 22:13:18 initializing window  1280 x 720
2018/10/04 22:13:18 dpi, default_dpi =  0 72
2018/10/04 22:13:21 Loading font  /usr/share/fonts/DejaVuSans.ttf
2018/10/04 22:13:21 Failed to load font at '/usr/share/fonts/DejaVuSans.ttf'
 ' try setting a font yourself with strife.LoadFont
resize to  1280 x 960
resize to  1280 x 960
resize to  1280 x 720
resize to  1280 x 720
closing window!

This is result of the running example:

Fedora 28 : Godot example with linux .

Today I tested a simple example with the game engine named Godot version 3.0.6.
It was created on a Windows 8.1 operating system and exported as a linux application.
I moved the two files to the Fedora 28 operating system.

[mythcat@desk Godot_test_001]$ ll
total 41752
-rw-rw-r--. 1 mythcat mythcat    41092 Aug  2 18:34 Godot_test_001.pck
-rwxrwxr-x. 1 mythcat mythcat 42707653 Aug  2 18:34 Godot_test_001.x86_64
[mythcat@desk Godot_test_001]$ ./Godot_test_001.x86_64 
OpenGL ES 3.0 Renderer: Mesa DRI Intel(R) Ivybridge Desktop 
Mono: Initializing module...
The assembly mscorlib.dll was not found or could not be loaded.
It should have been installed in the `/usr/lib/mono/4.5/mscorlib.dll' directory.

The error occurred from the mono package and I fixed it with the installation using the dnf tool.

[root@desk mythcat]# dnf install mono-core.x86_64
Last metadata expiration check: 1:22:05 ago on Thu 02 Aug 2018 05:30:05 PM EEST.
Dependencies resolved.

...
Installed:
  mono-core.x86_64 4.8.0-14.fc28                 libgdiplus.x86_64 5.6-1.fc28                     
  mono-data.x86_64 4.8.0-14.fc28                 mono-data-sqlite.x86_64 4.8.0-14.fc28            
  mono-extras.x86_64 4.8.0-14.fc28               mono-mvc.x86_64 4.8.0-14.fc28                    
  mono-wcf.x86_64 4.8.0-14.fc28                  mono-web.x86_64 4.8.0-14.fc28                    
  mono-winforms.x86_64 4.8.0-14.fc28            

Complete!

Here's the final result:

[mythcat@desk Godot_test_001]$ ./Godot_test_001.x86_64 
OpenGL ES 3.0 Renderer: Mesa DRI Intel(R) Ivybridge Desktop 
Mono: Initializing module...
Mono: Runtime initialized
Mono: INITIALIZED

Fedora 28 : Godot game engine.

Today I tested the new version of Godot game engine - version 3.0.3 .
You can download it from official webpage.
I used the 64 bit version.
After download and unzip you can run the binary file in your user terminal.
The Godot game engine start with a GUI.
Into the right area of screen into Scene tab two objects: Spatial and Camera.
You need to select or add a WoldEnvironment node.
Take a look to the Inspector and use with New Environment .
Run this with the play icon.
If is all right you can see something like this:

Create e new folder into your project and name it Export.
Copy the mscorelib.dll into this folder.
Go to main menu and select Project - Export and you will see this GUI for export your game.
Press Add button to select Linux/X11 output:
Select Linux and press Export Project button.
Go to Export folder and run from your linux terminal your game.
This game engine working well with Fedora 28 and the export running without errors.

Fedora and childish ideas .

The marketing, design and promotion of any product is a key element of success.
I have to admit that although I am not an active member of Fedora distribution teams and I am glad to be able to help where it is needed.
Over the last time, I spend my online time with my son playing Roblox ( because he is away from me) and trying to show him what the computer can do for people.
This game allows development with the LUA programming language and object creation for users.
The idea that programs and games are essential factors in our lives.
Also the fact that I have been using Fedora for a long time, I have allowed myself to implement an intention to promote the Fedora distribution.
This is a shirt created with the Fedora logo and can be worn in the Roblox game. He found it here.

Fedora 27 : load81 simple lua game engine .

Today I tested something simple with Fedora 27 and scheduling in.
This is a SDL based Lua programming environment for children called load81.

The author teel us:

The name Load81 originates from the fact that in popular Commodore home computers the command LOAD "*",8,1 would load the first program on the disk starting from the file-specified memory location.

Load81 is written in ANSI C and uses SDL and SDL_gfx and SDL_image libraries.
I installed all these libraries and everything worked very well.
Once taken from github with clones I tested the examples in the examples folder and worked well from the first time.
The examples folder come with simple examples and some simple games.
Create your lua script and use this command to run it:

./load81 example.lua

All running scripts require a graphical display account.
They worked very well on my normal account and I got a run-time error on my root account.
From examples, I took the triangles.lua script to illustrate how this game engine looks and works.

function setup()
    background(0,0,0);
end

function draw()
    fill(math.random(255),math.random(255),math.random(255),math.random())
    triangle(math.random(WIDTH),math.random(HEIGHT),
             math.random(WIDTH),math.random(HEIGHT),
             math.random(WIDTH),math.random(HEIGHT))
end

This is screenshot of triangles.lua script:

Fedora 27 : lua programming with torch and love 2d.

The Lua programming language is a good programming tool to start and test your programming skills.
Lately, the capabilities of computers and computer networks have increased exponentially.
The programming language allows the user simple programming possibilities with essential advantages.
I will illustrate some programs and frameworks that may be of special interest to you:

• Wireshark has an embedded Lua interpreter and you can be used to write dissectors (to decode packet data), post-dissectors and taps;
• Torch is a scientific computing framework with wide support for machine learning algorithms;
• Love 2D is a framework for making 2D games for windows, linux and android;

Today I start with install lua , torch and love 2D.
This work very well. If you use root accont then love command will work only with display SDL. This means you have to use a normal user, not a root user.
I used dnf install tool for lua and love 2d and github for torch.
The result can be seen in the following screenshots:

Linux old game.

Released in 1989 for a bunch of platforms this game named Rick Dangerous is a story about exploring the catacombs in the world.
I've played in the past with an old PC with tape and I was super exciting by story and complexity. Now you can play with infinite lives.
Also you can try some development because you can get the source code.

The game can be found here.

News: Google Play Store increasing file size .

To help developers build apps , Google Play Store increasing file size limit from 50 MB to 100 MB.
Seam Google wants to encourage developers to create richer apps and games.
Also, users will see a warning only when the app exceeds the 100MB quota and makes use of Expansion Files.
You can read more at support googleplay apk