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[![License: MIT](https://img.shields.io/badge/License-MIT-blue.svg?style=for-the-badge)](LICENSE) [![Wally](https://img.shields.io/github/v/tag/ukendio/jecs?&style=for-the-badge)](https://wally.run/package/ukendio/jecs)
# Jecs - Just a Stupidly Fast ECS
A high-performance Entity Component System (ECS) for Roblox games.
A high-performance Entity Component System (ECS) for Roblox games, supporting both Luau and TypeScript.
## Features
- 🚀 **Blazing Fast**: Iterate over 800,000 entities at 60 frames per second
- 🔗 **Entity Relationships**: First-class support for [entity relationships](docs/learn/concepts/relationships.md)
- 🔒 **Type Safety**: Fully typed API for both [Luau](https://luau-lang.org/) and TypeScript
- 📦 **Zero Dependencies**: No external dependencies required
- ⚡ **Optimized Storage**: Cache-friendly [archetype/SoA](https://ajmmertens.medium.com/building-an-ecs-2-archetypes-and-vectorization-fe21690805f9) storage
- ✅ **Battle-tested**: Rigorously [unit tested](https://github.com/Ukendio/jecs/actions/workflows/ci.yaml) for stability
* **Blazing Fast:** Iterate over hundreds of thousands of entities at 60 frames per second. Benchmark results are available in the documentation.
* **Entity Relationships:** First-class support for defining and querying relationships between entities.
* **Type Safety:** Fully typed API for both Luau and TypeScript, enhancing code maintainability and reducing errors.
* **Zero Dependencies:** No external dependencies required, simplifying integration into your project.
* **Optimized Storage:** Cache-friendly archetype/SoA (Structure of Arrays) storage for optimal performance.
* **Battle-tested:** Rigorously unit tested for stability and reliability.
* **Comprehensive Documentation:** Detailed documentation guides you through installation, usage, and advanced concepts.
## Documentation
- [Getting Started](docs/learn/overview/get-started.md)
- [API Reference](docs/api/jecs.md)
- [Concepts](docs/learn/concepts/)
- [Examples](examples/)
- [FAQ](docs/learn/faq/common-issues.md)
* [Getting Started](docs/learn/overview/get-started.md)
* [API Reference](docs/api/jecs.md) (Note: This link may need updating to reflect the actual location of the API docs if they are generated separately)
* [Concepts](docs/learn/concepts/)
* Entities and Components
* Queries
* Relationships
* Component Traits
* Addons
* [Examples](examples/)
* [FAQ](docs/learn/faq/common-issues.md)
* [Contributing](docs/contributing/)
## Quick Example
## Quick Example (Luau)
```lua
local world = jecs.World.new()
local pair = jecs.pair
-- Define components
local Position = world:component() :: jecs.Entity<Vector3>
local Velocity = world:component() :: jecs.Entity<Vector3>
-- Create an entity
local entity = world:entity()
world:set(entity, Position, Vector3.new(0, 0, 0))
world:set(entity, Velocity, Vector3.new(1, 0, 0))
-- Update system
-- Update system (example)
for id, position, velocity in world:query(Position, Velocity) do
world:set(id, Position, position + velocity)
end
```
## Quick Example (TypeScript)
```typescript
import { World } from "@rbxts/jecs";
const world = new World();
const Position = world.component<Vector3>();
const Velocity = world.component<Vector3>();
const entity = world.entity();
world.set(entity, Position, new Vector3(0, 0, 0));
world.set(entity, Velocity, new Vector3(1, 0, 0));
// Update system (example)
for (const [id, position, velocity] of world.query(Position, Velocity)) {
world.set(id, Position, position.add(velocity));
}
```
## Performance
### Query Performance
21,000 entities, 125 archetypes, 4 random components queried:
![Queries](assets/image-3.png)
### Insertion Performance
Inserting 8 components to an entity and updating them over 50 times:
![Insertions](assets/image-4.png)
Benchmark results demonstrating Jecs' performance are available in the documentation. These include query and insertion performance tests.
## Installation
### Using Wally
### Using Wally (Luau)
Add Jecs to your `wally.toml`:
```toml
[dependencies]
jecs = "ukendio/jecs@0.2.3"
```
### Using npm (roblox-ts)
Then run:
```bash
npm i @rbxts/jecs
wally install
```
### Standalone
Download `jecs.rbxm` from our [releases page](https://github.com/Ukendio/jecs/releases).
### Using npm (Roblox-ts)
```bash
npm install @rbxts/jecs
```
### Standalone Installation
1. Download `jecs.rbxm` from the [releases page](https://github.com/ukendio/jecs/releases).
2. Import it into your Roblox project.
## Contributing
@ -78,10 +110,11 @@ We welcome contributions! Please see our [contribution guidelines](docs/contribu
## Community & Support
- [Discord Community](https://discord.gg/h2NV8PqhAD)
- [GitHub Issues](https://github.com/ukendio/jecs/issues)
- [API Documentation](https://ukendio.github.io/jecs/)
* [Discord Community](https://discord.gg/h2NV8PqhAD)
* [GitHub Issues](https://github.com/ukendio/jecs/issues)
* [API Documentation](https://ukendio.github.io/jecs/) (Note: This link may need updating)
## License
Jecs is [MIT licensed](LICENSE).