.

Assets/Scripts/Bullet.cs

@@ -0,0 +1,45 @@
+using UnityEngine;
+
+public class Bullet : MonoBehaviour
+{
+    public float speed = 10f;
+
+    void Update()
+    {
+        transform.position += transform.forward * speed * Time.deltaTime;
+    }
+
+    private void OnTriggerEnter(Collider other)
+    {
+        // Trúng khiên
+        if (other.CompareTag("Shield"))
+        {
+            Destroy(gameObject);
+            return;
+        }
+
+        // Trúng đầu
+        if (other.CompareTag("BluePlayer"))
+        {
+            HitBox hit = other.GetComponent<HitBox>();
+
+            if (hit != null)
+            {
+                hit.blueplayer.Die();
+            }
+
+            Destroy(gameObject);
+        }
+        if (other.CompareTag("RedPlayer"))
+        {
+            HitBox hit = other.GetComponent<HitBox>();
+
+            if (hit != null)
+            {
+                hit.redplayer.Die();
+            }
+
+            Destroy(gameObject);
+        }
+    }
+}