Added Enemy Variants for Wall and Ground Enemies

Added Todo to CollisionChecker

Assets/Scripts/AI/BasicPatrollingEnemyAI.cs

@@ -24,7 +24,7 @@ namespace AI
 
         protected virtual void Awake()
         {
-            movement = gameObject.AddComponent<EnemyMovement>();
+            movement = gameObject.GetComponent<EnemyMovement>();
             leftWallChecker = GetCollisionCheckerOnChild("Collision Checkers/Left Wall");
             rightWallChecker = GetCollisionCheckerOnChild("Collision Checkers/Right Wall");
             leftGroundChecker = GetCollisionCheckerOnChild("Collision Checkers/Left Ground");

Assets/Scripts/Movement/CollisionChecker.cs

@@ -4,9 +4,9 @@ namespace Movement
 {
     public class CollisionChecker : MonoBehaviour
     {
-        private Collider2D[] nonAllocColliderArray = new Collider2D[5];
+        private Collider2D[] nonAllocColliderArray = new Collider2D[5]; // TODO increase the size if it causes problems
 
-        public LayerMask LayerMask { get; set; } = ~((1 << 6) | (1 << 7)); // Everything except the "Player" and "Enemy" layer
+        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()

Assets/Scripts/Movement/EnemyMovement.cs

@@ -5,17 +5,17 @@ namespace Movement
     [RequireComponent(typeof(Rigidbody2D))]
     public class EnemyMovement : MonoBehaviour, IMovement
     {
-        private Rigidbody2D _rigidbody2D = null;
-        private bool _isPaused = false;
-        private float moveValue = 0f;
+        protected Rigidbody2D _rigidbody2D = null;
+        protected bool _isPaused = false;
+        protected float moveValue = 0f;
 
         public float BaseSpeed { get; set; } = 1f;
         public bool IsPaused => _isPaused;
 
-        private void Awake()
+        protected virtual void Awake()
             => _rigidbody2D = GetComponent<Rigidbody2D>();
 
-        private void FixedUpdate()
+        protected virtual void FixedUpdate()
         {
             if (IsPaused)
                 return;
@@ -40,7 +40,7 @@ namespace Movement
             UpdateRigidbody();
         }
 
-        private void UpdateRigidbody()
+        protected void UpdateRigidbody()
             => _rigidbody2D.simulated = !_isPaused;
     }
 }

Assets/Scripts/Movement/EnemyVerticalMovement.cs

@@ -0,0 +1,29 @@
+using UnityEngine;
+
+namespace Movement
+{
+    public class EnemyVerticalMovement : EnemyMovement
+    {
+        protected Vector2 gravityForce = Vector2.right;
+
+        protected override void Awake()
+        {
+            base.Awake();
+
+            _rigidbody2D.gravityScale = 0f;
+            gravityForce *= -Physics2D.gravity.y * _rigidbody2D.mass;
+        }
+
+        protected override void FixedUpdate()
+        {
+            _rigidbody2D.AddRelativeForce(gravityForce);
+
+            if (IsPaused)
+                return;
+
+            Vector2 velocity = _rigidbody2D.velocity;
+            velocity.y = moveValue;
+            _rigidbody2D.velocity = velocity;
+        }
+    }
+}

Assets/Scripts/Movement/EnemyVerticalMovement.cs.meta

@@ -0,0 +1,11 @@
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