Crate recs

Simple entity-component system. Pure Rust (macro-free)!

Example

extern crate recs;
use recs::{Ecs, EntityId};

#[derive(Clone, PartialEq)]
struct Age{years: u32}

#[derive(Clone, PartialEq)]
struct Brain{iq: i32}

fn main() {
    // Create an ECS instance
    let mut ecs: Ecs = Ecs::new();
    // Add entity to the system
    let me: EntityId = ecs.create_entity();
    // Attach component to the entity
    ecs.set(me, &Age{years: 22});
    // Get attached component data from entity
    let older = ecs.get::<Age>(me).unwrap().years + 1;
    // Modify an entity's component
    ecs.set(me, &Age{years: older});
    // It works!
    assert!(ecs.get::<Age>(me) == Some(Age{years: 23}));
    assert!(ecs.get::<Brain>(me) == None); // Aw man...
}

Structs

• ComponentIter
  Iterator that yields references to ECS components.
• ComponentIterMut
  Iterator that yields mutable references to ECS components.
• Ecs
  Primary data structure containing entity and component data.
• EntityIdIter
  Iterator for entity IDs.

Type Aliases

• EntityId
  Value type representing an entry in the entity-component system.