```markdown ## 实体类关系图（Mermaid - VS Code 可用） 在 VS Code 中预览此图，需安装 Mermaid 插件（如 "Mermaid Markdown Syntax Highlighting" 和 "Preview Mermaid Diagram"），然后复制以下代码至 `.md` 文件中： ```mermaid classDiagram class PlayerTank { +int HP +int Ammo +float x, y +Direction direction +Move() +Shoot() +TakeDamage() +Pickup(PowerUp) } class EnemyTank { +int HP +int Ammo +float x, y +AIMode mode +AI_Move() +AI_Shoot() +TakeDamage() } class Base { +int HP +DestroyOnHPZero() } class Wall { +float x, y +bool isDestructible +BlockMovement() +BlockBullet() } class PowerUp { +string type +float duration +ApplyEffect(PlayerTank) +Expire() } class GameLoop { +HandleInput() +Update() +Render() +CheckCollisions() } class CollisionDetection { +Detect(Tank, Bullet) +Detect(Bullet, Wall) +Detect(Tank, Tank) +Detect(Tank, PowerUp) } PlayerTank --> Base : protects PlayerTank --> EnemyTank : attacks PlayerTank --> PowerUp : picks up EnemyTank --> Base : targets EnemyTank --> PlayerTank : attacks Wall --> PlayerTank : blocks Wall --> EnemyTank : blocks Wall --> Bullet : blocks PowerUp --> PlayerTank : affects GameLoop --> CollisionDetection : uses GameLoop --> PlayerTank : updates GameLoop --> EnemyTank : updates GameLoop --> Base : monitors GameLoop --> Wall : manages GameLoop --> PowerUp : spawns ``` > 💡 提示：在 VS Code 中打开命令面板（Ctrl+Shift+P），输入 “Mermaid: Preview Diagram” 即可查看图表。 ```