Added health, respawning and Bullet spawners

Assets/Scripts/Core/Pattern.cs

@@ -5,8 +5,9 @@ using UnityEngine;
 public class Pattern : MonoBehaviour
 {
     public string name = "Default Pattern";
-    public ParticleSystem particleSystem;
-    private Enemy enemy;
+    public float duration;
+    public bool notified = false;
+    public Enemy enemy;
 
     // Start is called before the first frame update
     void Start()
@@ -15,14 +16,47 @@ public class Pattern : MonoBehaviour
     }
 
     // Update is called once per frame
-    void Update()
+    private void Update()
     {
-        
+        OnPatternUpdate();
+        duration -= Time.deltaTime;
+        if (duration <= 0)
+        {
+            //find all particle systems in children and stop them
+            foreach (ParticleSystem ps in GetComponentsInChildren<ParticleSystem>())
+            {
+                ps.Stop();
+            }
+
+            //find all particle systems in children and sum their particle counts
+            int totalParticles = 0;
+            foreach (ParticleSystem ps in GetComponentsInChildren<ParticleSystem>())
+            {
+                totalParticles += ps.particleCount;
+            }
+
+            if (totalParticles == 0)
+            {
+                Destroy(gameObject);
+                return;
+            }
+
+            if (enemy && !notified)
+            {
+                enemy.OnPatternFinished();
+                notified = true;
+            }
+        }
+    }
+
+    public virtual void OnPatternUpdate()
+    {
+        //override this
     }
 
     public void StartPattern(Enemy enemy)
     {
         //Start pattern
     }
-
+    
 }