Unityでスタックオーバーフローしてしまった

前提・実現したいこと

UnityでUIが変わったり、発砲できたりするようなシステムを作っています。
UIの変更機能を実装しテストに以下のエラーメッセージが発生しました。

発生している問題・エラーメッセージ

StackOverflowException: The requested operation caused a stack overflow.
FirstPersonGunController.set_SupplyValue (System.Int32 value) <0x1e3a228f5d0 + 0x00016> in <141fe023199f493885009e10446256d3>:0

該当のソースコード

C#
1using System.Collections;
2using System.Collections.Generic;
3using UnityEngine;
4using UnityEngine.UI;
5
6public class FirstPersonGunController : MonoBehaviour
7{
8    public enum ShootMode { AUTO, SEMIAUTO }
9
10    public bool shootEnabled = true;
11
12    public ShootMode shootMode = ShootMode.AUTO;
13    public int maxAmmo = 30;
14    public int damage = 1;
15    public float shootInterval = 0.1f;
16    public float shootRange = 50;
17    [SerializeField]
18    int maxSupplyValue = 30;
19    [SerializeField]
20    float supplyInterval = 0.1f;
21
22    public Vector3 muzzleFlashScale;
23    public GameObject muzzleFlashPrefab;
24    public GameObject hitEffectPrefab;
25    [SerializeField]
26    Image ammoGauge;
27    [SerializeField]
28    Text ammoText;
29    [SerializeField]
30    Image supplyGuage;
31
32    bool shooting = false;
33    bool supplying = false;
34    int ammo = 0;
35    int supplyValue = 0;
36
37    GameObject muzzleFlash;
38    GameObject hitEffect;
39
40    void Start()
41    {
42        InitGun();
43    }
44
45    void Update()
46    {
47        if (shootEnabled & ammo > 0 & GetInput())
48        {
49            StartCoroutine(ShootTimer());
50        }
51        if (shootEnabled)
52        {
53            StartCoroutine(SupplyTimer());
54        }
55    }
56
57    public int Ammo
58    {
59        set
60        {
61            ammo = Mathf.Clamp(value, 0, maxAmmo);
62
63            ammoText.text = ammo.ToString();
64
65            float scaleX = (float)ammo / maxAmmo;
66            ammoGauge.rectTransform.localScale = new Vector3(scaleX, 1, 1);
67        }
68        get
69        {
70            return ammo;
71        }
72    }
73
74    public int SupplyValue
75    {
76        set
77        {
78            SupplyValue = Mathf.Clamp(value, 0, maxSupplyValue);
79
80            if (SupplyValue >= maxSupplyValue)
81            {
82                Ammo = maxAmmo;
83                supplyValue = 0;
84            }
85
86            float scaleX = (float)supplyValue / maxSupplyValue;
87            supplyGuage.rectTransform.localScale = new Vector3(scaleX, 1, 1);
88        }
89        get
90        {
91            return supplyValue;
92        }
93    }
94    void InitGun()
95    {
96        Ammo = maxAmmo;
97    }
98
99    bool GetInput()
100    {
101        switch (shootMode)
102        {
103            case ShootMode.AUTO:
104                return Input.GetMouseButton(0);
105
106            case ShootMode.SEMIAUTO:
107                return Input.GetMouseButtonDown(0);
108        }
109        return false;
110    }
111
112    IEnumerator ShootTimer()
113    {
114        if (!shooting)
115        {
116            shooting = true;
117            //マズルフラッシュON
118            if (muzzleFlashPrefab != null)
119            {
120                if (muzzleFlash != null)
121                {
122                    muzzleFlash.SetActive(true);
123                }
124                else
125                {
126                    muzzleFlash = Instantiate(muzzleFlashPrefab, transform.position, transform.rotation);
127                    muzzleFlash.transform.SetParent(gameObject.transform);
128                    muzzleFlash.transform.localScale = muzzleFlashScale;
129                }
130            }
131
132            Shoot();
133
134            yield return new WaitForSeconds(shootInterval / 2);
135
136            //マズルフラッシュOFF
137            if (muzzleFlash != null)
138            {
139                muzzleFlash.SetActive(false);
140            }
141
142            //ヒットエフェクトOFF
143            if (hitEffect != null)
144            {
145                if (hitEffect.activeSelf)
146                {
147                    hitEffect.SetActive(false);
148                }
149            }
150            yield return new WaitForSeconds(shootInterval / 2);
151
152            shooting = false;
153        }
154        else
155        {
156            yield return null;
157        }
158    }
159
160    IEnumerator SupplyTimer()
161    {
162        if (!supplying)
163        {
164            supplying = true;
165            SupplyValue++;
166            yield return new WaitForSeconds(supplyInterval);
167            supplying = false;
168        }
169    }
170
171    void Shoot()
172    {
173        Ray ray = new Ray(transform.position, transform.forward);
174        RaycastHit hit;
175
176        //レイを飛ばして、ヒットしたオブジェクトの情報を得る
177        if (Physics.Raycast(ray, out hit, shootRange))
178        {
179            //ヒットエフェクトON
180            if (hitEffectPrefab != null)
181            {
182                if (hitEffect != null)
183                {
184                    hitEffect.transform.position = hit.point;
185                    hitEffect.transform.rotation = Quaternion.FromToRotation(Vector3.forward, hit.normal);
186                    hitEffect.SetActive(true);
187                }
188                else
189                {
190                    hitEffect = Instantiate(hitEffectPrefab, hit.point, Quaternion.identity);
191                }
192            }
193            //★ここに敵へのダメージ処理などを追加
194        }
195        Ammo--;
196    }
197}