https://github.com/taublast/appomobi.maui.drawnui.spaceshooter

Arcade Game Etude built with DrawnUI for .NET MAUI
https://github.com/taublast/appomobi.maui.drawnui.spaceshooter

csharp dotnet dotnetmaui drawnui engine game game-development game-engine maui skia skiasharp

Last synced: 1 day ago
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Arcade Game Etude built with DrawnUI for .NET MAUI

• Host: GitHub
• URL: https://github.com/taublast/appomobi.maui.drawnui.spaceshooter
• Owner: taublast
• License: mit
• Created: 2024-01-07T14:44:59.000Z (11 months ago)
• Default Branch: main
• Last Pushed: 2024-11-12T20:16:13.000Z (5 days ago)
• Last Synced: 2024-11-12T21:23:39.984Z (5 days ago)
• Topics: csharp, dotnet, dotnetmaui, drawnui, engine, game, game-development, game-engine, maui, skia, skiasharp
• Language: C#
• Homepage:
• Size: 9.25 MB
• Stars: 33
• Watchers: 4
• Forks: 6
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

README

        
# _.NET MAUI_ Space Shooter Game Etude

https://github.com/taublast/AppoMobi.Maui.DrawnUi.SpaceShooter/assets/25801194/30523e94-12d5-4740-8af3-bebf11ef317f

Built with [DrawnUI for .NET MAUI](https://github.com/taublast/DrawnUi.Maui)

## _The Challenge_

To create a simple yet heavily animated arcade cross-platform game, using .NET MAUI XAML with Skia drawn UI, showing all the advantages that [.NET MAUI](https://learn.microsoft.com/en-us/dotnet/maui) and [SkiaSharp](https://github.com/mono/SkiaSharp) provide. 

The game runs on Android, Windows, iOS, and Mac (Catalyst), all from a single code base. Desktop versions support both mouse and keyboard.

## _Implementation_

Driven by [one](https://github.com/mooict/WPF-Space-shooter-game) of the awesome [ICT MOO tutorials](https://www.youtube.com/@mooict/videos), much content to play with, knowing we can do it all with .NET MAUI.  

Free [Lottie animations](https://lottiefiles.com/) quickly fulfilled the need for animated content.

[DrawnUI](https://github.com/taublast/DrawnUi.Maui) was used to draw virtual controls on a Skia canvas.

## _Of Note_

* Android is hardware-accelerated with GL

* iOS is hardware-accelerated with Apple Metal

* Windows is using skia3-pre nuget for hardware acceleration with Angle.

* Mac Catalyst is using stable skia2 nuget, running CPU only until a new skia3 preview is released.

Hardware accelerated versions run with FPS capped at display refresh rate.

Desktop versions present non-resizable windows, capturing keyboard input. They can be dragged among different displays adapting to new scale. Disabling the maximize button still needs to be implemented.

After updating to NET8 app window is not centering on Catalyst until fix is found.

## _Final Words_

Attained FPS looks okay in Release builds and even on Debug. 

With an optimized design, especially in regards to control caching, we could imagine more games and fancy animations built with [#dotnetmaui](https://twitter.com/search?q=%23dotnetmaui).

[Lottie animations](https://lottiefiles.com/) have proven themselves to be very useful to quickly implement animations.

Tried to make the garbage collector trigger as little as possible using [Unity's suggested techniques](https://docs.unity3d.com/Manual/performance-garbage-collection-best-practices.html). It still might have its small impact but we can hope for .NET MAUI someday to adopt a custom [incremental GC-collector](https://docs.unity3d.com/Manual/performance-incremental-garbage-collection.html) that Unity is using.

There is also still room for improvement on some platforms to marry game canvas update with sharing the UI thread with MAUI bindings and the user input to make updating more smooth. Actually thinking towards a dedicated `GameCanvas` to exist along with `Canvas` to sacrifice MAUI bindings for a smooth game experience.

When i have spare time would add examples of playing frames from a sprite sheet and separate image files (would be anotehr game) along with playing game music/sounds.

## _What's New_

* Windows is using skia3-pre nuget for hardware acceleration, other platforms use stable skia2 nuget.

* Fixed loop bug that was randomly not removing inactive sprites.

## _Licencing_

This code and the DrawnUI nuget are provided under the [MIT license](https://github.com/taublast/AppoMobi.Maui.DrawnUi.SpaceShooter?tab=MIT-1-ov-file#readme). ICT MOO space ships sprites come under the [Apache 2.0 license](https://github.com/mooict/WPF-Space-shooter-game?tab=Apache-2.0-1-ov-file#readme).