Fix shields oscilating between players

Assets/Scripts/ShieldScript.cs

@@ -13,6 +13,8 @@ public class ShieldScript : MonoBehaviour
   // used to store the position while the trap is deactivated
   private Vector2 spawnPosition;
 
+  public float relayDelay = 0.25f;
+  private bool canRelay = true;
 
   // Use this for initialization
   void Start()
@@ -23,7 +25,7 @@ public class ShieldScript : MonoBehaviour
   void OnTriggerEnter2D(Collider2D other)
   {
     PlayerHealth oldHealth = parentHealth;
-    if (other.tag == "Player")
+    if (canRelay && other.tag == "Player")
     {
       Invoke("stopShielding", shieldingTime);
       parentHealth = other.GetComponent<PlayerHealth>();
@@ -31,11 +33,18 @@ public class ShieldScript : MonoBehaviour
       transform.parent = other.transform;
       Debug.Log("Set shield from shield");
       parentHealth.setShield(true);
+      canRelay = false;
+      Invoke("enableRelay", relayDelay);
     }
     if (oldHealth != null && oldHealth != parentHealth) oldHealth.setShield(false);
 
   }
 
+  void enableRelay()
+  {
+    canRelay = true;
+  }
+
   void stopShielding()
   {
     CancelInvoke("stopShielding");