SpaceInvaders.NET

Space Invaders arcade emulator implemented using C# / .NET 6.

Core Intel 8080 CPU emulation has been built in NET8080 class libary.

Building

Requirements

• Git
• .NET 6 SDK
• .NET 7 SDK
• dotnet wasm-tools workload
• NET8080 (included as submodule)
• Space Invaders ROM files (not provided in repo):
  • invaders.h
  • invaders.g
  • invaders.f
  • invaders.e
• Space Invaders sound files (not provided in repo)

git clone https://github.com/sfitz42/SpaceInvaders.NET.git --recurse-submodules
dotnet workload install wasm-tools
cd SpaceInvaders.NET
dotnet build

Providing Game Files

ROM and sound files in the WASM port are selected by the user at runtime via upload dialog.

The following ROM files need to be placed inside SpaceInvaders.OpenTK/Roms:

• invaders.h
• invaders.g
• invaders.f
• invaders.e

The following sound files need to be placed inside SpaceInvaders.OpenTK/Sounds:

File name	Sound Type
0.wav	UFO (looping)
1.wav	Fire
2.wav	Death
3.wav	Hit
4.wav	Fleet Movement 1
5.wav	Fleet Movement 2
6.wav	Fleet Movement 3
7.wav	Fleet Movement 4
8.wav	UFO Hit

Running Emulator

OpenTK

The OpenTK frontend (OpenGL / OpenAL) can be ran on Windows / MacOS / Linux using the following commands:

cd SpaceInvaders.OpenTK
dotnet run

Change display scale (default 1x) by providing the scale argument:

dotnet run -s 2
dotnet run --displayScale 2

Users on Windows will also need to install OpenAL.

Web Browser (WASM)

The web assembly port has been deployed to Netlify. This can be accessed on the following URL:

https://space-invaders-net.netlify.app

The port can also be ran on a local server by executing the following commands:

cd SpaceInvaders.Web
dotnet run

Useful Links / Resources

• Computer Archeology - Space Invaders
• superzazu/invaders - Useful for colour mappings
• OpenTK (OpenGL Examples)
• OpenTK (OpenAL Example) - Useful WAV file method