체력바 추가

플레이어는 상시 표시, 나머지는 체력 변경 시 표시

Assets/Scripts/EnemyUnit.cs

@@ -7,7 +7,7 @@ namespace Northbound
     /// 적대 유닛 (적대세력 또는 몬스터)
     /// </summary>
     [RequireComponent(typeof(Collider))]
-    public class EnemyUnit : NetworkBehaviour, IDamageable, ITeamMember
+    public class EnemyUnit : NetworkBehaviour, IDamageable, ITeamMember, IHealthProvider
     {
         [Header("Team Settings")]
         [Tooltip("이 유닛의 팀 (Hostile = 적대세력, Monster = 몬스터)")]
@@ -20,6 +20,10 @@ namespace Northbound
         public GameObject damageEffectPrefab;
         public GameObject destroyEffectPrefab;
 
+        [Header("Health Bar")]
+        public bool showHealthBar = true;
+        public GameObject healthBarPrefab;
+
         private NetworkVariable<int> _currentHealth = new NetworkVariable<int>(
             0,
             NetworkVariableReadPermission.Everyone,
@@ -37,6 +41,8 @@ namespace Northbound
         /// </summary>
         public event System.Action<ulong> OnDeath;
 
+        private UnitHealthBar _healthBar;
+
         public override void OnNetworkSpawn()
         {
             base.OnNetworkSpawn();
@@ -46,13 +52,48 @@ namespace Northbound
                 _currentHealth.Value = maxHealth;
                 _team.Value = enemyTeam;
             }
+
+            // 체력 변경 이벤트 구독
+            _currentHealth.OnValueChanged += OnHealthChanged;
+
+            // 체력바 생성
+            if (showHealthBar && healthBarPrefab != null)
+            {
+                CreateHealthBar();
+            }
         }
 
         public override void OnNetworkDespawn()
         {
+            _currentHealth.OnValueChanged -= OnHealthChanged;
             base.OnNetworkDespawn();
         }
 
+        private void OnHealthChanged(int previousValue, int newValue)
+        {
+            if (_healthBar != null)
+            {
+                _healthBar.UpdateHealth();
+            }
+        }
+
+        private void CreateHealthBar()
+        {
+            if (_healthBar != null)
+                return;
+
+            if (healthBarPrefab == null)
+                return;
+
+            GameObject healthBarObj = Instantiate(healthBarPrefab, transform);
+            _healthBar = healthBarObj.GetComponent<UnitHealthBar>();
+
+            if (_healthBar != null)
+            {
+                _healthBar.Initialize(this);
+            }
+        }
+
         #region IDamageable Implementation
 
         public void TakeDamage(int damage, ulong attackerId)
@@ -144,6 +185,20 @@ namespace Northbound
 
         #endregion
 
+        #region IHealthProvider Implementation
+
+        public int GetCurrentHealth() => _currentHealth.Value;
+
+        public int GetMaxHealth() => maxHealth;
+
+        public float GetHealthPercentage()
+        {
+            int max = GetMaxHealth();
+            return max > 0 ? (float)_currentHealth.Value / max : 0f;
+        }
+
+        #endregion
+
         private void OnDrawGizmosSelected()
         {
             #if UNITY_EDITOR