feat (rootEnemies): create a slowdown area that slow the player

Assets/Code/Scripts/Enemies/LivingRoot/SlowdownArea.cs

@@ -2,15 +2,45 @@ using UnityEngine;
 
 public class SlowdownArea : MonoBehaviour
 {
-    // Start is called once before the first execution of Update after the MonoBehaviour is created
-    void Start()
+
+    [Header("References")]
+    public float maxSlow;
+    public float slowSpeed;
+    public float timer;
+    
+    private float baseSpeed;
+    private bool isInZone = false;
+    private PlayerMovement player;
+
+    private void OnTriggerEnter(Collider area)
     {
-        
+        if (area.CompareTag("Player")){
+            player = area.GetComponent<PlayerMovement>();
+            baseSpeed = player.WalkSpeed;
+            isInZone = true;
+        }
     }
 
+    private void OnTriggerExit(Collider area)
+    {
+       if (area.CompareTag("Player"))
+        {
+            isInZone = false;
+            timer = 0f;
+            player.WalkSpeed = baseSpeed;
+        }
+    }
+
+
     // Update is called once per frame
     void Update()
     {
-        
+        if (!isInZone || player == null)
+            return;
+        timer += Time.deltaTime;
+        float t = Mathf.Clamp(timer * slowSpeed, 0f, 1f);
+        float multiplicator = Mathf.Lerp(1f, maxSlow, t);
+        player.WalkSpeed = baseSpeed * multiplicator;
+
     }
 }