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Voxel Space in C

Description

Comanche's Voxel Space rendering algorithm written in C using SDL. You can try it here (browser demo).

Code_2022-02-02_14-48-09

Bindings

Keyboard + Mouse

  • G - Toggle gravitation
  • LMB (hold) - Free look
  • LMB (double click) - Enable persist free look
  • ESC - Close application
  • W/S - Move camera forward/backward
  • A/D - Rotate camera or strafe (if LMB pressed)
  • E/Q - Adjust camera height (Jump if gravtitation enabled)
  • R/F - Adjust camera pitch
  • J/K - Adjust details level
  • LShift - Increase camera movement speed
  • C - Reset camera pitch
  • Space - Increase render distance
  • Shift + Space - Decrease render distance
  • LCTRL + Space - Reset render distance to default value
  • Alt + Enter - Toggle fullscreen

Game Controller

  • BACK - Toggle gravitation
  • LS - Move camera
  • RS - Rotate camera
  • RSB - Reset camera pitch
  • LT - Increase camera movement speed
  • RT - Increase camera rotation speed
  • LB - Decrease render distance
  • RB - Increase render distance
  • A - Jump (if gravitation enabled)
  • B - Close application
  • Y - Reset render distance to default value
  • D-Pad Up/Down - Adjust camera height
  • Touchpad - Free look

Building

Arguments supported by build scripts

  • dbg - Build with debug symbols;
  • wall - Enable all compiler warnings;
  • winf - Increase warning level;
  • woff - Disable all compiler warnings;
  • threaded - Build with multithreaded renderer;
  • sdlimage - Build with png/jpg/... images support;
  • overlay - Build with onscreen information module;
  • web - Build for browsers using emscripten;
  • run - Run compiled app if build successful.

Build scripts usage

  • On Windows you need to run the build.bat batch script in Visual Studio Developer Environment. Or... just open Visual Studio Code and press F5 button. If you need png image support, run build.bat sdlimage.
  • On Linux you need to run the build.sh bash script. If you need png image support, run build.sh sdlimage;
  • Almost all build agrguments can be combined.

Notes

  • You can change map by dropping two images (height map and diffuse map) on the Voxel Space window;
  • The first letter in file name tells to the VoxelSpace how to use dropped file. D - use as a height map, and C - use as a diffuse map;
  • Also you can change default map by passing commandline arguments to VoxelSpace: vs.exe -dm "path/to/diffuse.png" -hm "path/to/height.png" or vs.exe /diffuse "path/to/image.png" /height "path/to/image.png";
  • So far there are no VoxelSpace commandline arguments list, see src/argparse.c for more information.

Thanks

Thanks to s-macke for the inspiration and excellent technology explanation :)

License

The software part of the repository is under the MIT license. Please read the license file for more information. Please keep in mind, that the Voxel Space technology might be still patented in some countries. The color and height maps are reverse engineered from the game Comanche and are therefore excluded from the license.