Security News
pnpm 10.0.0 Blocks Lifecycle Scripts by Default
pnpm 10 blocks lifecycle scripts by default to improve security, addressing supply chain attack risks but sparking debate over compatibility and workflow changes.
@arancini/systems
Advanced tools
Systems helpers for arancini.
@arancini/systems can either be used via the umbrella package arancini
, or installed separately.
> npm install @arancini/systems
In arancini/systems
, systems are classes that extend System
. Systems are added to an Executor
, and are updated when calling executor.update()
.
import { World } from "arancini";
import { Executor, System } from "arancini/systems";
type Entity = {
position?: { x: number; y: number };
velocity?: { x: number; y: number };
};
// Create a World
const world = new World<Entity>();
// Create an Executor
const executor = new Executor(world);
// Define a System
class MovementSystem extends System<Entity> {
moving = this.query((e) => e.has("position", "velocity"));
onUpdate(delta: number, time: number) {
for (const entity of this.moving) {
const position = entity.get("position");
const velocity = entity.get("velocity");
position.x += velocity.x;
position.y += velocity.y;
}
}
onInit() {
// Called when the Executor is initialised, or when the system is added to an already initialised Executor
}
onDestroy() {
// Called when the Executor is destroyed, or the system is removed
}
}
// Add the system to the executor
executor.add(MovementSystem);
// Initialise the executor
executor.init();
// Update all systems, optionally passing a delta time
executor.update(1 / 60);
// Destroy the executor
executor.destroy();
Systems can be added with a priority. The order systems run in is first determined by priority, then by the order systems were added.
executor.add(MovementSystem, { priority: 10 });
If a system should only run when a query has results, you can mark the query as required. Then, onUpdate
will only be called if the query has at least one result.
Note:
onInit
andonDestroy
will be called regardless of whether required queries have results.
class ExampleSystem extends System<Entity> {
requiredQuery = this.query((e) => e.has("position"), { required: true });
onUpdate() {
// we can safely assume that the query has at least one result
const { x, y } = this.requiredQuery.first;
}
}
The this.singleton
utility method creates a query for a single component, and sets the property to the given component on the first matching entity.
class CameraRigSystem extends System<Entity> {
camera = this.singleton("camera", { required: true });
onUpdate() {
console.log(camera);
}
}
Note: Singleton components must be defined on a top-level property of the system. The property must not be a ES2022 private field (prefixed with
#
).
Systems can be attached to other systems with this.attach
. This is useful for sharing logic or system state that doesn't belong in a component.
class ExampleSystem extends System<Entity> {
otherSystem = this.attach(OtherSystem);
onInit() {
this.otherSystem.foo();
}
}
FAQs
Systems for arancini
We found that @arancini/systems demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 1 open source maintainer collaborating on the project.
Did you know?
Socket for GitHub automatically highlights issues in each pull request and monitors the health of all your open source dependencies. Discover the contents of your packages and block harmful activity before you install or update your dependencies.
Security News
pnpm 10 blocks lifecycle scripts by default to improve security, addressing supply chain attack risks but sparking debate over compatibility and workflow changes.
Product
Socket now supports uv.lock files to ensure consistent, secure dependency resolution for Python projects and enhance supply chain security.
Research
Security News
Socket researchers have discovered multiple malicious npm packages targeting Solana private keys, abusing Gmail to exfiltrate the data and drain Solana wallets.