// systems/CommandSystem.js
import { activeUnit, selectedUnits } from './ControlMode.js';

export class CommandSystem {
  constructor(scene) {
    this.scene = scene;

    scene.events.on('move-relative', this.onMoveRelative, this);
    scene.events.on('move-to-point', this.onMoveToPoint, this);
    scene.events.on('select-unit', this.onSelectUnit, this);
  }

  onMoveRelative(dir) {
    const targets = selectedUnits.length > 0 ? selectedUnits : (activeUnit ? [activeUnit] : []);
    
    targets.forEach(unit => {
      unit.moveRelative(dir.x, dir.y);
    });
  }

  onMoveToPoint(x, y) {
    const targets = selectedUnits.length > 0 ? selectedUnits : (activeUnit ? [activeUnit] : []);
    

    targets.forEach(unit => {
      unit.setTarget(x, y); // ← 使用新接口
    });
  }

  onSelectUnit(unit) {
    // 切换单位
    import('./ControlMode.js').then(mod => {
      mod.setActiveUnit(unit);
      this.scene.events.emit('unit-activated', unit);
    });
  }
}