타워 공격 기능 추가

각 타워 외형 변경 및 투사체 생성

Assets/Scripts/GameBase/Projectile.cs

@@ -0,0 +1,47 @@
+using UnityEngine;
+
+public class Projectile : MonoBehaviour
+{
+    private Transform _target;
+    public float speed = 20f;
+    public float damage = 20f;
+
+    public void Seek(Transform target)
+    {
+        _target = target;
+    }
+
+    void Update()
+    {
+        if (_target == null)
+        {
+            Destroy(gameObject);
+            return;
+        }
+
+        // 타겟 방향으로 이동
+        Vector3 dir = _target.position - transform.position;
+        float distanceThisFrame = speed * Time.deltaTime;
+
+        // 적에게 도달했는지 확인
+        if (dir.magnitude <= distanceThisFrame)
+        {
+            HitTarget();
+            return;
+        }
+
+        transform.Translate(dir.normalized * distanceThisFrame, Space.World);
+        transform.LookAt(_target); // 적을 바라보게 회전
+    }
+
+    void HitTarget()
+    {
+        IDamageable damageable = _target.GetComponentInParent<IDamageable>();
+        if (damageable != null)
+        {
+            damageable.TakeDamage(damage);
+        }
+
+        Destroy(gameObject); // 충돌 후 소멸
+    }
+}