Better readme, added why zig and sokol

readme.md

@@ -1,3 +1,29 @@
 A little learning playground of [sokol](https://github.com/floooh/sokol) in [zig](https://ziglang.org/). Started on the gamejam at Decentrala, 9th June 2024.
 
-To build, you need to have zig master. Then just `zig build run` and that should be it!
+The goal of this project is not fixed, and is just to try out some sokol features. But here's a few things I'd like to try out:
+- [x] Draw a circle
+- [ ] Load and render textures
+- [ ] Render a 3D object
+- [ ] Compile it for WebAssembly and run it in the browser
+
+## Build
+
+To build, you need to have zig master (you can use [zvm](https://www.zvm.app/) to help you with this). Then just `zig build run` and that should be it!
+
+Note that if you change shaders, you have to recompile them manually - run compile_shaders.bat.
+
+## Why zig?
+
+Zig is a low level language and toolchain that is designed as a "better C". Its main goal is to be simple, robust and fast. A few strong points:
+- It can cross-compile from any platform to any platform.
+- It can include C headers and you can use it in zig directly.
+- It has a built-in build system that is also written in zig, so no other build systems like cmake are needed.
+- Unlike C++, it's not OOP, there are no hidden constructor and destructor calls and overcomplicated copy/move rules.
+- Unlike C, it solves A LOT of problems of C, and is MUCH harder to shoot yourself in the foot.
+- There are no hidden allocations, everything that is heap-allocating has to be done explicitely.
+- It has a powerful metaprogramming facility "comptime", which provides full static reflection.
+- I can go on listing more cool features, but that is enough for now.. :)
+
+## Why sokol?
+
+Sokol is a cross platform graphics library with minimal footprint that can compile to any backend like DirectX, OpenGL, Vulcan, Metal or even WebAssembly.