import * as I from 'immutable';

import {Trait} from '@avocado/entity';

export class Damaging extends Trait {

  static defaultParams() {
    return {
      damageSpecs: [],
    };
  }

  initialize() {
    this._collidingWith = [];
    const damageSpecsJSON = this.params.get('damageSpecs').toJS();
    this._damageSpecs = damageSpecsJSON.map((damageSpec) => {
      return {
        affinity: 'physical',
        lock: 0.1,
        power: 0,
        variance: 0.2,
        ...damageSpec,
      };
    });
  }

  get damageSpecs() {
    return this._damageSpecs;
  }

  tick(elapsed) {
    const isCollidingWith = this.entity.isCollidingWith;
    for (let i = 0; i < isCollidingWith.length; ++i) {
      const entity = isCollidingWith[i];
      if (entity.is('vulnerable') && !entity.isInvulnerable) {
        entity.takeDamageFrom(this.entity);
      }
    }
  }

}