Ecs Client

npm install @nanoforge-dev/ecs-client
yarn add @nanoforge-dev/ecs-client
pnpm add @nanoforge-dev/ecs-client
bun add @nanoforge-dev/ecs-client

import { type IRunOptions } from "@nanoforge-dev/common";
import { NanoforgeFactory } from "@nanoforge-dev/core";
import { ECSClientLibrary } from "@nanoforge-dev/ecs-client";

export async function main(options: IRunClientOptions) {
  const app = NanoforgeFactory.createClient();

  const ecs = new ECSClientLibrary();

  app.useComponentSystem(ecs);

  await app.init(options);

  const registry = ecs.registry;

  const entity = registry.spawnEntity();
  registry.addComponent(entity, new ExampleComponent("foo", 42));

  registry.addSystem(exampleSystem);

  await app.run();
}

export class ExampleComponent {
  name = this.constructor.name;

  constructor(
    public paramA: string,
    public paramB: number,
    public paramC: boolean = false,
  ) {}

  get foo() {
    return "bar";
  }

  get paramAOrDefault() {
    return this.paramC ? this.paramA : "default";
  }

  addOne() {
    this.paramB += 1;
  }
}

export const exampleSystem = (registry: Registry, ctx: Context) => {
  const entities = registry.getZipper([ExampleComponent]);

  entities.forEach((entity) => {
    if (entity.ExampleComponent.paramA === "end") {
      ctx.app.setIsRunning(false);
      return;
    }

    if (entity.ExampleComponent.paramB === 0) entity.ExampleComponent.paramA = "end";

    if (entity.ExampleComponent.paramB >= 0)
      entity.ExampleComponent.paramB = entity.ExampleComponent.paramB - 1;
  });
};