Anaxim (pronounced a-NAK-sim, named after the ancient Greek philosopher and cartographer Anaximander) is a civilization simulator made in Ebitengine Fyne giu, with the main goal of making a visually appealing and interactive timeline of the world using a cell-based simulation.

State

Currently the "game" only features a basic migration simulation on a map where you can see global statistics, inspect information of any cell by clicking and control the speed.

Building

To build you need Go (1.22.0), a GCC compiler (for cgo) and depending on platform, some dependencies. Info below is mostly from the giu readme, which you'll need if you want to build on different platforms than Windows and Linux and please refer to it if you have issues.

Warning! go build will seem to hang for a while the first time you try to compile as it needs to build the graphics drivers using GCC. Also a compilation warning might pop up from a demo file of github.com/AllenDang/imgui-go for some reason, just ignore it. "So much for fast Go compile times!" well, technically it's not Go. Feel free to fork giu to work without cgo.

Linux

1. Install Go

2. Install gcc

3. Install graphics library header files

   • Debian / Ubuntu: sudo apt install libx11-dev libxcursor-dev libxrandr-dev libxinerama-dev libxi-dev libglx-dev libgl1-mesa-dev libxxf86vm-dev
   • Red Hat based: sudo dnf install libX11-devel libXcursor-devel libXrandr-devel libXinerama-devel libXi-devel libGL-devel libXxf86vm-devel

4. Compile! (See warning above)

    go build
   

Windows

1. Install Go

2. Install gcc

   • Save yourself the trouble and get TDM-GCC. You want the 64+32-bit MinGW-w64 edition.

3. Compile! (See warning above)

    go build
   

Running

You need to have the Maps directory in the same folder as the executable, at least with oldworld.png, as ./Maps/oldworld.png is the default path to the map.

.
├── Anaxim
└── Maps
    └── oldworld.png

To change this run the program with a different mappath flag. This is explained below.

Flags

Optionally, you can set flags from the command-line when launching Anaxim. They can be checked ./Anaxim -h. For example:

-mappath string
    Path to the map PNG file. (default "./Maps/oldworld.png")
-prerun int
    Generations to simulate before launching, min 50

So ./Anaxim -mappath=./Maps/bigisland.png -prerun=20000 will prerun the simulation for 20,000 generations on a map generated from bigisland.png.

Map file

The PNG map file is converted to a map grid like this:

• All pixels with RGB = [0,0,255] become water cells.
• All other pixel become land cells.
• Their habitability level is determined by (255-R)/255, so more red is less habitable.

Planned features

• Underlying world map
• Tribes and countries
• Wars and diplomacy
• Speed/pause controls
• GPU acceleration with OpenCL (scary!)
• Interactivity
• Stats and graphs!
• Custom maps (and random maps?)
• Map modes

Contributing

Sadly as I am writing a thesis on this project, I cannot accept any contributions until that's done (probably will take a few months). As the project is under GPL-3.0, I cannot stop you from forking and making your own Anaxim, but for now I would kindly ask to only contribute by sharing ideas with me and sharing Anaxim with the world instead.