Sect - functional System API

ecs-functional-system.js

'use strict';

class System {
    constructor(name, next) {
        this.name = name;
        this.components = [];
        this.next = next;
    }

    getOtherComponents(component) {
        return this.components.filter(c => c !== component); // TODO: memoize à la LinearCollisionSystem
    }

    register(component) {
        this.components.push(component);
    }

    update(timestamp) {
        for (const component of this.components) {
            try {
                this.next(timestamp, component, this.getOtherComponents(component));
            } catch (e) {
                throw new Error(`Failed to update ${this.name}: ${error.message}`);
            }
        }
    }
}

const createSystem = (name, next) => new System(name, next);

const mySystem = createSystem('dummySystem', (timestamp, component, ...otherComponents) => {
    console.log('System logic here!');
});