feat(game): 新增3个角色、修复实习生攻击特效、加速开发子弹、每波结束自动进入下一波

game/towers/PMTower.ts

@@ -0,0 +1,76 @@
+import type Phaser from 'phaser'
+import { TowerBase } from './TowerBase'
+import type { EnemyBase } from '../enemies/EnemyBase'
+
+/**
+ * 产品经理 PM — 160 HC
+ * 攻击：射出原型图（需求变更弹幕），命中使怪物"需求混乱"（双重减速 + 持续伤害）
+ * 特殊技能"需求变更"：每 4 次攻击强制随机重置目标位置（怪物被打回 2 个路径节点）
+ */
+export class PMTower extends TowerBase {
+  private hitCount = 0
+
+  constructor(scene: Phaser.Scene, gridX: number, gridY: number) {
+    super(scene, gridX, gridY, 160, 4, 20, 0.8, 'tower-pm')
+  }
+
+  attack(target: EnemyBase): void {
+    this.firePRD(target)
+  }
+
+  private firePRD(target: EnemyBase): void {
+    // 原型图：白色矩形框符号
+    const bullet = this.scene.add.text(this.px, this.py, '📋', {
+      fontSize: '16px',
+    }).setOrigin(0.5, 0.5).setDepth(13)
+
+    const dx = target.x - this.px
+    const dy = target.y - this.py
+    const dist = Math.sqrt(dx * dx + dy * dy)
+
+    this.scene.tweens.add({
+      targets: bullet,
+      x: target.x, y: target.y,
+      duration: (dist / 900) * 1000,
+      ease: 'Linear',
+      onComplete: () => {
+        bullet.destroy()
+        if (target.isDead) return
+
+        target.takeDamage(this.attackDamage)
+        // 双重减速：60% 持续 3 秒
+        target.addSlow(0.6, 3000)
+        target.addDOT(5, 3000)
+
+        this.hitCount++
+        if (this.hitCount % 4 === 0) {
+          // 需求变更：打回 2 个路径节点
+          target.rewindPath(2)
+          this.showMessage('需求变更！打回重做！', '#06b6d4')
+        }
+
+        // 命中特效：蓝色震荡圈
+        const g = this.scene.add.graphics()
+        g.lineStyle(2, 0x06b6d4, 0.9)
+        g.strokeRect(target.x - 12, target.y - 10, 24, 20)
+        g.setDepth(15)
+        this.scene.tweens.add({
+          targets: g, scaleX: 1.8, scaleY: 1.8, alpha: 0,
+          duration: 350, onComplete: () => g.destroy(),
+        })
+      },
+    })
+  }
+
+  private showMessage(msg: string, color: string): void {
+    const txt = this.scene.add
+      .text(this.px, this.py - 30, msg, {
+        fontFamily: 'VT323, monospace', fontSize: '14px',
+        color, backgroundColor: '#0c4a6e', padding: { x: 4, y: 2 },
+      }).setOrigin(0.5, 1).setDepth(20)
+    this.scene.tweens.add({
+      targets: txt, y: this.py - 55, alpha: 0,
+      duration: 1200, onComplete: () => txt.destroy(),
+    })
+  }
+}