feat(enemies): 实现怪物基类与4种怪物及波次管理器

game/enemies/OldEmployee.ts

@@ -0,0 +1,39 @@
+import type Phaser from 'phaser'
+import { EnemyBase, type PathPoint } from './EnemyBase'
+
+const QUOTES = ['我为公司立过功！', '我有10年经验！', '年龄不是问题！']
+
+export class OldEmployee extends EnemyBase {
+  constructor(scene: Phaser.Scene, pathPoints: PathPoint[]) {
+    super(scene, pathPoints, 150, 50, 8, 30)
+    this.shieldCount = 3
+    this.drawSprite()
+  }
+
+  drawSprite(): void {
+    if (!this.sprite) return
+    this.sprite.clear()
+    // 大蓝方块
+    this.sprite.fillStyle(0x93c5fd, 1)
+    this.sprite.fillRect(-10, -10, 20, 20)
+    // 护盾外框（金色）
+    this.sprite.lineStyle(2, 0xfbbf24, 0.8)
+    this.sprite.strokeRect(-12, -12, 24, 24)
+    this.sprite.setDepth(10)
+    this.sprite.setPosition(this.x, this.y)
+  }
+
+  override drawHealthBar(): void {
+    super.drawHealthBar()
+    // 绘制护盾数量标记
+    if (!this.healthBar) return
+    for (let i = 0; i < this.shieldCount; i++) {
+      this.healthBar.fillStyle(0xfbbf24, 1)
+      this.healthBar.fillRect(this.x - 15 + i * 11, this.y - 28, 8, 4)
+    }
+  }
+
+  getQuote(): string {
+    return QUOTES[Math.floor(Math.random() * QUOTES.length)]
+  }
+}