export default class LevelManager {
  constructor(scene, levelData) {
    this.scene = scene;
    this.levels = levelData;          // array of level objects
    this.currentLevel = 1;
    this.currentConfig = this.levels[0];
  }

  startLevel(num) {
    this.currentLevel = num;
    this.currentConfig = this.levels[num - 1];
    // could broadcast an event for UI if desired
  }

  levelUp() {
    const next = this.currentLevel + 1;
    if (next <= this.levels.length) {
      this.startLevel(next);
      this.scene.spawnManager.updateSpawnInterval(this.currentConfig.spawnInterval);
    }
  }
}