Shard

Shard is an Archetype-based Entity Component System implemented in Rust.

Features

• Systems are (currently) implicit.
• Supports #![no_std] environments. (Requires alloc however)
• Up to 14 components per entity.
• Up to 65K archetypes.
• Up to 16.7 million entities.
• Dependency free.
• (Mostly) unit tested.

Usage

See the examples directory for details, but in short:

1. Implement Component trait for types which you wish to use as components.
2. Create a Registry.
3. Use the Registry to construct entities.
4. Add or remove components from entities.
5. Iterate over entities matching certain subsets of components.

TODO:

• Query support
• Filter iterators => done as of 0.2.3.
• Procedural derive macro for Components. => done as of 0.2.6.
• Allow replacing components.
• Allow adding/removing multiple components at once.
• Faster archetype lookups (using a graph).
• Component dependencies/exclusions.