Moved from swarm to NavMesh - need to fix the enemy navigation! Review the animation controller to see if anything is being triggered.

Assets/Scripts/Fortification.cs

@@ -0,0 +1,68 @@
+using UnityEngine;
+using System.Collections.Generic;
+
+public class Fortification : MonoBehaviour
+{
+    // Global list so Siege enemies can easily find targets
+    public static List<Fortification> AllFortifications = new List<Fortification>();
+
+    [Header("Health Settings")]
+    public float maxHealth = 500f;
+    public float currentHealth;
+
+    [Header("Visual Stages (Assign GameObjects)")]
+    public GameObject fullyBuiltModel;
+    public GameObject damagedModel;
+    public GameObject ruinedModel;
+
+    private Collider barrierCollider;
+    public bool IsDestroyed => currentHealth <= 0;
+
+    void Awake()
+    {
+        barrierCollider = GetComponent<Collider>();
+    }
+
+    void OnEnable() 
+    { 
+        AllFortifications.Add(this); 
+        currentHealth = maxHealth; 
+        UpdateVisuals(); 
+    }
+
+    void OnDisable() 
+    { 
+        AllFortifications.Remove(this); 
+    }
+
+    public void TakeDamage(float amount)
+    {
+        if (IsDestroyed) return;
+        
+        currentHealth -= amount;
+        UpdateVisuals();
+    }
+
+    public void Repair(float amount)
+    {
+        if (currentHealth >= maxHealth) return;
+
+        currentHealth += amount;
+        currentHealth = Mathf.Min(currentHealth, maxHealth); // Cap at max
+        UpdateVisuals();
+    }
+
+    private void UpdateVisuals()
+    {
+        // Swap models based on health thresholds
+        fullyBuiltModel.SetActive(currentHealth > maxHealth * 0.5f);
+        damagedModel.SetActive(currentHealth > 0 && currentHealth <= maxHealth * 0.5f);
+        ruinedModel.SetActive(IsDestroyed);
+        
+        // When destroyed, turn the collider into a trigger so the horde can pour through the rubble
+        if (barrierCollider != null)
+        {
+            barrierCollider.isTrigger = IsDestroyed;
+        }
+    }
+}