Zig 3D

A repository where I'm playing with Zig, raylib and OpenGL.

Build and run from source

Install Zig (tested with Zig 0.12.0)

$ git clone "https://github.com/ngrilly/zig3d.git"
$ cd zig3d
$ zig build run

Learnings

Steps I followed to use raylib

1. Add raylib as a dependency:

   zig fetch --save=raylib https://github.com/raysan5/raylib/archive/9d628d1d499f8ad9c0e6fbed69914cecb611d6cd.tar.gz
   

2. Add the following in build.zig:

   const raylib_dep = b.dependency("raylib", .{});
   exe.linkLibrary(raylib_dep.artifact("raylib"));
   

3. Import it in main.zig:

   const raylib = @cImport({
       @cInclude("raylib.h");
   });
   

How does the above compare to using an external Go module?

Glossary

LOD: Level Of Detail VBO: Vertex Buffer Object

References

Game physis

• https://www.youtube.com/watch?v=3lBYVSplAuo
• https://gafferongames.com/post/physics_in_3d/
• https://www.toptal.com/game/video-game-physics-part-i-an-introduction-to-rigid-body-dynamics
• https://gamemath.com/

Problems

• How to transition from space to planet surface: https://gamedev.stackexchange.com/questions/108667/how-to-load-a-spherical-planet-and-its-regions
• Meshing in voxel engines:
  • https://0fps.net/2012/06/30/meshing-in-a-minecraft-game/
  • https://blackflux.wordpress.com/2014/02/23/meshing-in-voxel-engines-part-1/
  • https://nickmcd.me/2021/04/04/high-performance-voxel-engine/
  • Approaching Zero Driver Overhead in OpenGL

Todo

• Fly using newtonian physics
• Check lighting is right
• Structure the code
• Sound (engine, collisions, etc.)
• Collisions

Credits

• Engine sound: https://freesound.org/people/Nexotron/sounds/371282/