public abstract class WeaponMechanic : ScriptableObject {
    public abstract void OnProjectileSpawn(Projectile proj);
    public abstract void OnProjectileHit(Projectile proj, Enemy target);
}

// 示例：反弹机制
public class BounceMechanic : WeaponMechanic {
    public int maxBounces = 3;

    public override void OnProjectileHit(Projectile proj, Enemy target) {
        proj.bounceCount++;
        \text{if} (proj.bounceCount < maxBounces) {
            Enemy nextTarget = FindNearestEnemy(proj.transform.position);
            proj.Redirect(nextTarget.transform.position);
        } else {
            proj.Destroy();
        }
    }
}

// 示例:分裂机制
public class SplitMechanic : WeaponMechanic {
    public int splitCount = 3;

    public override void OnProjectileHit(Projectile proj, Enemy target) {
        for (int i = 0; i < splitCount; i++) {
            float angle = (360f / splitCount) * i;
            SpawnProjectile(proj.transform.position, angle);
        }
        proj.Destroy();
    }
}

public class ProjectilePool : MonoBehaviour {
    public GameObject projectilePrefab;
    public int poolSize = 1000;
    private Queue<Projectile> pool = new Queue<Projectile>();

    void Start() {
        for (int i = 0; i < poolSize; i++) {
            GameObject obj = Instantiate(projectilePrefab);
            obj.SetActive(false);
            pool.Enqueue(obj.GetComponent<Projectile>());
        }
    }

    public Projectile Get() {
        \text{if} (pool.Count > 0) {
            Projectile proj = pool.Dequeue();
            proj.gameObject.SetActive(true);
            return proj;
        }
        return null; // 池子用完了
    }

    public void Return(Projectile proj) {
        proj.gameObject.SetActive(false);
        pool.Enqueue(proj);
    }
}

public class RoomGenerator {
    public enum RoomType { Combat, Treasure, Shop, Boss }

    public class RoomNode {
        public RoomType type;
        public List<RoomNode> connections = new List<RoomNode>();
    }

    public RoomNode GenerateFloor() {
        // 1. 创建起始房间
        RoomNode start = new RoomNode { type = RoomType.Combat };

        // 2. 生成主路径（保证能到达 Boss）
        RoomNode current = start;
        for (int i = 0; i < 5; i++) {
            RoomNode next = new RoomNode { type = RoomType.Combat };
            current.connections.Add(next);
            current = next;
        }

        // 3. Boss 房间
        RoomNode boss = new RoomNode { type = RoomType.Boss };
        current.connections.Add(boss);

        // 4. 添加分支（宝箱/商店）
        AddBranches(start, 3);

        return start;
    }
}