silphius/app/ecs-systems/calculate-aabbs.js

import {System} from '@/ecs/index.js';

export default class CalculateAabbs extends System {

  tick() {
    for (const {Position: {x, y}, VisibleAabb} of this.ecs.changed(['Position'])) {
      if (VisibleAabb) {
        VisibleAabb.x0 = x - 32;
        VisibleAabb.x1 = x + 32;
        VisibleAabb.y0 = y - 32;
        VisibleAabb.y1 = y + 32;
      }
    }
  }

}