feat(towers): 实现防御塔基类与4种塔及塔管理器

game/towers/PPTMasterTower.ts

@@ -0,0 +1,60 @@
+import type Phaser from 'phaser'
+import { TowerBase } from './TowerBase'
+import type { EnemyBase } from '../enemies/EnemyBase'
+
+export class PPTMasterTower extends TowerBase {
+  constructor(scene: Phaser.Scene, gridX: number, gridY: number) {
+    super(scene, gridX, gridY, 100, 3, 5, 1.5)
+    this.drawSprite()
+  }
+
+  drawSprite(): void {
+    if (!this.sprite) return
+    this.sprite.clear()
+    // 橙色圆形
+    this.sprite.fillStyle(0xf59e0b, 1)
+    this.sprite.fillCircle(0, 0, 16)
+    // 圆心白点
+    this.sprite.fillStyle(0xffffff, 0.9)
+    this.sprite.fillCircle(0, 0, 5)
+    this.sprite.setPosition(this.px, this.py)
+    this.sprite.setDepth(10)
+  }
+
+  attack(target: EnemyBase): void {
+    // AOE 攻击：对射程内所有怪物造成伤害 + 减速
+    this.showAoeEffect()
+  }
+
+  /** 该方法由 TowerManager 调用，传入全体敌人 */
+  attackAoe(enemies: EnemyBase[]): void {
+    const rangePx = this.attackRange * 80 // TILE_SIZE
+    this.showAoeEffect()
+    for (const e of enemies) {
+      if (e.isDead) continue
+      const dx = e.sprite.x - this.px
+      const dy = e.sprite.y - this.py
+      const dist = Math.sqrt(dx * dx + dy * dy)
+      if (dist <= rangePx) {
+        e.takeDamage(this.attackDamage)
+        // 黑话领域：减速40%持续2秒
+        e.addSlow(0.4, 2000)
+      }
+    }
+  }
+
+  private showAoeEffect(): void {
+    const g = this.scene.add.graphics()
+    g.lineStyle(2, 0xf59e0b, 0.8)
+    g.strokeCircle(this.px, this.py, this.attackRange * 80)
+    g.setDepth(12)
+    this.scene.tweens.add({
+      targets: g,
+      alpha: 0,
+      scaleX: 1.2,
+      scaleY: 1.2,
+      duration: 400,
+      onComplete: () => g.destroy(),
+    })
+  }
+}