import { Core, Scene, Component, EntitySystem, ECSComponent, ECSSystem, Matcher, Time } from '@esengine/ecs-framework';

// 定义组件
@ECSComponent('Position')
class Position extends Component {
    constructor(public x = 0, public y = 0) {
        super();
    }
}

@ECSComponent('Velocity')
class Velocity extends Component {
    constructor(public dx = 0, public dy = 0) {
        super();
    }
}

// 创建系统
@ECSSystem('Movement')
class MovementSystem extends EntitySystem {
    constructor() {
        super(Matcher.all(Position, Velocity));
    }

    protected process(entities: readonly Entity[]): void {
        for (const entity of entities) {
            const position = entity.getComponent(Position)!;
            const velocity = entity.getComponent(Velocity)!;

            position.x += velocity.dx * Time.deltaTime;
            position.y += velocity.dy * Time.deltaTime;
        }
    }
}

// 创建场景并启动
class GameScene extends Scene {
    protected initialize(): void {
        this.addSystem(new MovementSystem());

        const player = this.createEntity("Player");
        player.addComponent(new Position(100, 100));
        player.addComponent(new Velocity(50, 0));
    }
}

// 启动游戏
Core.create();
Core.setScene(new GameScene());

// 游戏循环中更新
function gameLoop(deltaTime: number) {
    Core.update(deltaTime);
}