Collission Checker has been Added and Basic Patrolling Enemy Updated to use the Checkers

Assets/Prefabs/Basic Patrolling Enemy.prefab

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Assets/Prefabs/BasicPatrollingEnemy.prefab

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Assets/Scripts/AI/BasicPatrollingEnemyAI.cs

@@ -7,52 +7,39 @@ namespace AI
     {
         [SerializeField] protected bool isMovingRight = false;
 
-        [Space]
-        [Header("Left Detector")]
-        [SerializeField] protected Vector2 leftCliffDetectorOrigin = Vector2.left;
-        [SerializeField] protected Vector2 leftCliffDetectorSize = Vector2.one;
-
-        [Space]
-        [Header("Right Detector")]
-        [SerializeField] protected Vector2 rightCliffDetectorOrigin = Vector2.right;
-        [SerializeField] protected Vector2 rightCliffDetectorSize = Vector2.one;
-
-        [Space]
-        [Header("Right Detector")]
-        [SerializeField] protected LayerMask groundLayerMask = ~(1 << 6); // Everything except the "Player" layer
-
         protected IMovement movement = null;
-        protected Collider2D[] nonAllocColliderArray = new Collider2D[10];
 
-        protected Vector2 leftCliffPosition => GetCliffPositionInWorld(leftCliffDetectorOrigin);
+        protected CollissionChecker leftWallChecker = null;
-        protected Vector2 rightCliffPosition => GetCliffPositionInWorld(rightCliffDetectorOrigin);
+        protected CollissionChecker rightWallChecker = null;
+        protected CollissionChecker leftGroundChecker = null;
+        protected CollissionChecker rightGroundChecker = null;
 
-        protected bool IsLeftDetectorCollided => Physics2D.OverlapBoxNonAlloc(leftCliffPosition, leftCliffDetectorSize, 0, nonAllocColliderArray, groundLayerMask) != 0;
+
-        protected bool IsRightDetectorCollided => Physics2D.OverlapBoxNonAlloc(rightCliffPosition, rightCliffDetectorSize, 0, nonAllocColliderArray, groundLayerMask) != 0;
+        // If moving Right, and either there's no more ground to move into or there is a wall at the Right side of the enemy OR
+        // If moving Left, and either there's no more ground to move into or there is a wall at the Left side of the enemy
+        // We should change directions
+        private bool ShouldChangeDirection
+            => (isMovingRight && (rightWallChecker.IsCollided || !rightGroundChecker.IsCollided)) ||
+                (!isMovingRight && (leftWallChecker.IsCollided || !leftGroundChecker.IsCollided));
 
         protected virtual void Awake()
         {
             movement = gameObject.AddComponent<EnemyMovement>();
+            leftWallChecker = GetCollissionCheckerOnChild("Collission Checkers/Left Wall");
+            rightWallChecker = GetCollissionCheckerOnChild("Collission Checkers/Right Wall");
+            leftGroundChecker = GetCollissionCheckerOnChild("Collission Checkers/Left Ground");
+            rightGroundChecker = GetCollissionCheckerOnChild("Collission Checkers/Right Ground");
         }
 
         protected virtual void FixedUpdate()
         {
-            if ((isMovingRight && !IsRightDetectorCollided) || (!isMovingRight && !IsLeftDetectorCollided))
+            if (ShouldChangeDirection)
                 isMovingRight = !isMovingRight;
 
             movement.Move(isMovingRight ? 1f : -1f);
         }
 
-        protected Vector2 GetCliffPositionInWorld(Vector2 cliffPosition)
+        protected CollissionChecker GetCollissionCheckerOnChild(string childName)
-            => cliffPosition + (Vector2)transform.position;
+            => transform.Find(childName).GetComponent<CollissionChecker>();
-
-        protected virtual void OnDrawGizmosSelected()
-        {
-            Gizmos.color = IsLeftDetectorCollided ? Color.green : Color.red;
-            Gizmos.DrawWireCube(leftCliffPosition, leftCliffDetectorSize);
-
-            Gizmos.color = IsRightDetectorCollided ? Color.green : Color.red;
-            Gizmos.DrawWireCube(rightCliffPosition, rightCliffDetectorSize);
-        }
     }
 }

Assets/Scripts/Movement/CollissionChecker.cs

@@ -0,0 +1,18 @@
+using UnityEngine;
+
+namespace Movement
+{
+    public class CollissionChecker : MonoBehaviour
+    {
+        private Collider2D[] nonAllocColliderArray = new Collider2D[5];
+
+        public LayerMask LayerMask = ~((1 << 6) | (1 << 7)); // Everything except the "Player" and "Enemy" layer
+        public bool IsCollided => Physics2D.OverlapBoxNonAlloc(transform.position, transform.localScale, 0, nonAllocColliderArray, LayerMask) != 0;
+
+        public void OnDrawGizmosSelected()
+        {
+            Gizmos.color = IsCollided ? Color.green : Color.red;
+            Gizmos.DrawWireCube(transform.position, transform.localScale);
+        }
+    }
+}

Assets/Scripts/Movement/CollissionChecker.cs.meta

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