add zombie controller and implement damage system; update gun controller for raycasting; modify prefab and scene settings

Assets/Scripts/GunController.cs

@@ -9,6 +9,11 @@ public class GunController : MonoBehaviour
     [SerializeField] private AudioSource audioSource;
     [SerializeField] private AudioClip triggerSoundEffect;
 
+    [Header("Raycast")]
+    [SerializeField] private Transform muzzlePoint;
+    [SerializeField] private float maxRange = 100f;
+    [SerializeField] private float damage = 25f;
+
     private void OnEnable()
     {
         rightTriggerAction.action.Enable();
@@ -28,7 +33,22 @@ public class GunController : MonoBehaviour
 
     private void HandleShoot()
     {
-        Debug.Log("Shoot!");
         audioSource.PlayOneShot(triggerSoundEffect);
+
+        Vector3 origin = muzzlePoint != null ? muzzlePoint.position : transform.position;
+        Vector3 direction = muzzlePoint != null ? muzzlePoint.forward : transform.forward;
+
+        if (Physics.Raycast(origin, direction, out RaycastHit hit, maxRange))
+        {
+            if (hit.collider.CompareTag("Zombie"))
+            {
+                if (hit.collider.TryGetComponent(out ZombieController zombie))
+                {
+                    zombie.TakeDamage(damage);
+                }
+            }
+        }
+
+        Debug.DrawRay(origin, direction * maxRange, Color.red, 0.5f);
     }
-}
+}