アイテムドロップについて

敵を倒したらアイテムドロップするようにしたいんですけど、現状敵を倒してもドロップせず、無限生成されてる状態なので解決お願いします。

C＃
1using System.Collections;
2using System.Collections.Generic;
3using UnityEngine;
4
5public class EnemyManager : MonoBehaviour
6{
7    ItemManager itemManager;
8    Enemy enemy1;
9    [SerializeField]
10    private float waitTime = 3f;
11    private float elapsedTime;
12    Enemy m_enemy;
13    [SerializeField] GameObject enemyPrefab;
14    [SerializeField] float interval;
15    [SerializeField] float time = 0f;
16    int maxEnemys = 5;
17    int currentEnemys;
18    [SerializeField] Transform player;
19    [SerializeField] Transform enemy;
20    // Start is called before the first frame update
21    void Start()
22    {
23        Vector3 playerPos = player.position;
24        Vector3 enemyPos = enemy.position;
25        maxEnemys = currentEnemys;
26        elapsedTime = 0f;
27        itemManager = GetComponent<ItemManager>();
28    }
29
30    // Update is called once per frame
31    void Update()
32    {
33        Spawn();
34    }
35
36    public void Spawn()
37    {
38        itemManager.ItemDrop();
39        GameObject enemy = GameObject.Find(enemyPrefab.name);
40        if (enemy == null)
41        {
42            elapsedTime += Time.deltaTime;
43            if (elapsedTime > waitTime)
44            {
45                //enemy.transform.position = new Vector3(0, 0, 0);
46                GameObject newEnemy = Instantiate(enemyPrefab);
47                newEnemy.name = enemyPrefab.name;
48                elapsedTime = 0f;
49            }
50        }
51    }
52}

C#
1using System.Collections;
2using System.Collections.Generic;
3using UnityEngine;
4
5public class Enemy : MonoBehaviour
6{
7    public enum EnemyState
8    {
9        Walk,
10        Wait,
11        Chase,
12        Attack,
13        Freeze
14    };
15
16    private CharacterController enemyController;
17    private Animator animator;
18    //　目的地
19    private Vector3 destination;
20    //　歩くスピード
21    [SerializeField]
22    private float walkSpeed = 1.0f;
23    //　速度
24    private Vector3 velocity;
25    //　移動方向
26    private Vector3 direction;
27    //　到着フラグ
28    private bool arrived;
29    //　SetPositionスクリプト
30    private SetPosition setPosition;
31    //　待ち時間
32    [SerializeField]
33    private float waitTime = 5f;
34    //　経過時間
35    private float elapsedTime;
36    // 敵の状態
37    private EnemyState state;
38    //　プレイヤーTransform
39    private Transform playerTransform;
40
41    [SerializeField] int m_enemyHp = 3;
42    //　攻撃した後のフリーズ時間
43    [SerializeField]
44    private float freezeTime = 0.5f;
45
46    // Use this for initialization
47    void Start()
48    {
49        enemyController = GetComponent<CharacterController>();
50        animator = GetComponent<Animator>();
51        setPosition = GetComponent<SetPosition>();
52        setPosition.CreateRandomPosition();
53        velocity = Vector3.zero;
54        arrived = false;
55        elapsedTime = 0f;
56        SetState(EnemyState.Walk);
57    }
58
59    // Update is called once per frame
60    void Update()
61    {
62        //　見回りまたはキャラクターを追いかける状態
63        if (state == EnemyState.Walk || state == EnemyState.Chase)
64        {
65            //　キャラクターを追いかける状態であればキャラクターの目的地を再設定
66            if (state == EnemyState.Chase)
67            {
68                setPosition.SetDestination(playerTransform.position);
69            }
70            if (enemyController.isGrounded)
71            {
72                velocity = Vector3.zero;
73                animator.SetFloat("Speed", 2.0f);
74                direction = (setPosition.GetDestination() - transform.position).normalized;
75                transform.LookAt(new Vector3(setPosition.GetDestination().x, transform.position.y, setPosition.GetDestination().z));
76                velocity = direction * walkSpeed;
77            }
78
79            if (state == EnemyState.Walk)
80            {
81                //　目的地に到着したかどうかの判定
82                if (Vector3.Distance(transform.position, setPosition.GetDestination()) < 0.7f)
83                {
84                    SetState(EnemyState.Wait);
85                    animator.SetFloat("Speed", 0.0f);
86                }
87            }
88            else if (state == EnemyState.Chase)
89            {
90                //　攻撃する距離だったら攻撃
91                if (Vector3.Distance(transform.position, setPosition.GetDestination()) < 2f)
92                {
93                    SetState(EnemyState.Attack);
94                }
95            }
96            //　到着していたら一定時間待つ
97        }
98        else if (state == EnemyState.Wait)
99        {
100            elapsedTime += Time.deltaTime;
101
102            //　待ち時間を越えたら次の目的地を設定
103            if (elapsedTime > waitTime)
104            {
105                SetState(EnemyState.Walk);
106            }
107            //　攻撃後のフリーズ状態
108        }
109        else if (state == EnemyState.Freeze)
110        {
111            elapsedTime += Time.deltaTime;
112
113            if (elapsedTime > freezeTime)
114            {
115                SetState(EnemyState.Walk);
116            }
117        }
118        velocity.y += Physics.gravity.y * Time.deltaTime;
119        enemyController.Move(velocity * Time.deltaTime);
120    }
121
122
123    //　敵キャラクターの状態変更メソッド
124    public void SetState(EnemyState tempState, Transform targetObj = null)
125    {
126        state = tempState;
127        if (tempState == EnemyState.Walk)
128        {
129            arrived = false;
130            elapsedTime = 0f;
131            setPosition.CreateRandomPosition();
132        }
133        else if (tempState == EnemyState.Chase)
134        {
135            //　待機状態から追いかける場合もあるのでOff
136            arrived = false;
137            //　追いかける対象をセット
138            playerTransform = targetObj;
139        }
140        else if (tempState == EnemyState.Wait)
141        {
142            elapsedTime = 0f;
143            arrived = true;
144            velocity = Vector3.zero;
145            animator.SetFloat("Speed", 0f);
146        }
147        else if (tempState == EnemyState.Attack)
148        {
149            velocity = Vector3.zero;
150            animator.SetFloat("Speed", 0f);
151            animator.SetBool("Attack", true);
152        }
153        else if (tempState == EnemyState.Freeze)
154        {
155            elapsedTime = 0f;
156            velocity = Vector3.zero;
157            animator.SetFloat("Speed", 0f);
158            animator.SetBool("Attack", false);
159        }
160    }
161
162    //　敵キャラクターの状態取得メソッド
163    public EnemyState GetState()
164    {
165        return state;
166    }
167
168    public void OnTriggerEnter(Collider other)
169    {
170        if (other.gameObject.CompareTag("Sword"))
171        {
172            m_enemyHp -= 1;
173            if (m_enemyHp == 0)
174            {
175                Dead();
176            }
177        }
178    }
179    public void Dead() 
180    {
181        Destroy(transform.root.gameObject);
182    }
183}

C#
1using System.Collections;
2using System.Collections.Generic;
3using UnityEngine;
4
5public class ItemManager : MonoBehaviour
6{
7    public GameObject ItemObject;
8    [SerializeField]
9    private Item item;
10
11
12    // Start is called before the first frame update
13    void Start()
14    {
15
16    }
17
18    // Update is called once per frame
19    void Update()
20    {
21
22    }
23    public void ItemDrop()
24    {
25        if (item.GetItemName() == "回復薬")
26        {
27            for (int count = 0; count < 1; count++)
28            {
29                Instantiate(ItemObject, transform.position, Quaternion.identity);
30            }
31        }
32    }
33}