Vdkuipb-ecs NPM

ecs

Ecs is a simple Typescript library of a bare ecs implementation.

Installation

Use the package manager npm to install ecs.

npm install vdkuipb-ecs

Usage

import { Entity, System } from "vdkuipb-ecs"

export class RotationComponent {
    angle = 0;
}


class RotatorSystem extends System {

    protected getRequiredComponents() {
        return [ RotationComponent ]
    }

    protected entityInstantiated(entity: Entity): void {
        let rotation: RotationComponent = entity.getComponent(RotationComponent);
        rotation.angle = 50;
    }

    protected entityUpdate(entity: Entity, delta?: number): void {
        let rotation: RotationComponent = entity.getComponent(RotationComponent);
        rotation.angle += 1;

        console.log(rotation.angle);

        if (rotation.angle >= 100) {
            this.remove(entity);
        }
    }

    protected entityDestroyed(entity: Entity): void {
        console.log("removed: " + entity.id);
    }
}

var entity = new Entity();
entity.addComponent(PositionComponent);
entity.addComponent(RotationComponent);

var system = new RotatorSystem();
system.add(entity);

let prev = Date.now();
setInterval(() => {
    system.update(prev - Date.now());
    prev = Date.now();
}, 1000 / 10);

A better example can be found in the example folder.