Genesys

Just a simple text format for declaring basic components and convert them to rust data types under build-time.

No more repetitive macro calls or extensive declarations for simple structures, just a blissfull list of components with simple control of use of crate/module/function and derive for all, modules or specific structs.

Empowered by pest

Todo

• [x] Use crates/mods in modules
• [x] Custom derive for modules
• [ ] Impl Default for tuple structs
• [ ] Generate enums
• [ ] Identify single tuple structs primitive type to generate relevant ops code

Usage

build.rs ```rust use std::env; use std::path::PathBuf;

fn main() { println!("cargo:rerun-if-changed=src/components"); let outpath = PathBuf::from(env::var("OUTDIR").unwrap()); genesys::generate("src/components", out_path.join("components.rs")).unwrap(); } ```

main.rs/lib.rs

Add this to the beginning of your file ```rust include!(concat!(env!("OUT_DIR"), "/components.rs"));

```

Cheat sheet, genesys format

```

Default use, applied to all modules

global_use { # Comma-separated modules/functions bevy::prelude::Entity, bevy::prelude::* }

Default derive, applied to all components

global_derive (Debug, Entity)

Components are either empty structs, tuple structs or named structs (enum comming soon)

One component declaration per line

MyComponent MyTupleComponent str # str gets translated to String MyNamedComponent name: String, weight: f32

Modules are declared with the modulus symbol "%"

%object { # Local use(overrides global use) use { entities::MySpecialEntity }

# Local derive(overrides global)
derive (MySpecialEntity)

Name str
Weight f32

%item {
    Item
    Food
    TradeGood
    Weapon
    Armor
}

} ```

Binary

cargo run -- example/components # Prints components as rust cargo run -- example/components components.rs # Writes output to components.rs