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Assets/Scripts/Enemies/KnightController.cs

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+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+public class KnightController : MonoBehaviour, IPooledObject{
+
+    [Range(1, 5)] [SerializeField] int framesToMove = 1;
+    int currentFrame = 1;
+    bool moving;
+
+    [Space]
+    [Range(0, .3f)] [SerializeField] float movementSmoothingTime = .1f;
+    [SerializeField] Vector3[] possiblePositions;
+    [SerializeField] LayerMask whatIsEnemy;
+
+    Vector3[] availablePositions;
+    public Vector3 positionToGo;
+    Vector3 currentPosition;
+    Vector3 velocity;
+
+    Transform player;
+
+    void Awake(){
+        player = FindObjectOfType<PlayerController>().transform;
+        FindObjectOfType<PlayerController>().onMove.AddListener(() => Move());
+    }
+
+    // Start is called before the first frame update
+    public void OnObjectSpawn(){
+        moving = false;
+        positionToGo = currentPosition = transform.position;
+        currentFrame = 1;
+    }
+
+    // Update is called once per frame
+    void Update(){
+        if (Vector3.Distance(transform.position, positionToGo) > .1f){
+            transform.position = Vector3.SmoothDamp(transform.position, positionToGo, ref velocity, movementSmoothingTime);
+        }else if (Vector3.Distance(transform.position, positionToGo) < .1f){
+            transform.position = positionToGo;
+        }
+    }
+
+    void OnDrawGizmos(){
+        if (!Application.isPlaying){
+            Gizmos.color = Color.red;
+            Gizmos.DrawSphere(transform.position + possiblePositions[0], .15f);
+            Gizmos.DrawSphere(transform.position + possiblePositions[1], .15f);
+            Gizmos.DrawSphere(transform.position + possiblePositions[2], .15f);
+            Gizmos.DrawSphere(transform.position + possiblePositions[3], .15f);
+            Gizmos.DrawSphere(transform.position + possiblePositions[4], .15f);
+            Gizmos.DrawSphere(transform.position + possiblePositions[5], .15f);
+            Gizmos.DrawSphere(transform.position + possiblePositions[6], .15f);
+            Gizmos.DrawSphere(transform.position + possiblePositions[7], .15f);
+        }
+    }
+
+    void Move(){
+        if (currentFrame < framesToMove){
+            currentFrame++;
+            moving = false;
+            return;
+        }
+        currentFrame = 1;
+        moving = true;
+        if (gameObject.activeSelf){
+            StartCoroutine(ResetMoving());
+        }
+
+        currentPosition = positionToGo;
+
+        availablePositions = new Vector3[8];
+        for (int i = 0; i < availablePositions.Length - 1; i++){
+            if (!Physics.CheckSphere(currentPosition + possiblePositions[i], .3f, whatIsEnemy)){
+                availablePositions[i] = (currentPosition + possiblePositions[i]);
+            }
+        }
+
+        float nearestDist = float.MaxValue;
+        Vector3 nearestPos = new Vector3();
+        foreach (Vector3 v in availablePositions){
+            if (v != Vector3.zero){
+                float dist = Vector3.Distance(v, player.position);
+                if (dist < nearestDist){
+                    nearestDist = dist;
+                    nearestPos = v;
+                }
+            }
+        }
+
+        positionToGo = (nearestPos == Vector3.zero) ? currentPosition : nearestPos;
+    }
+
+    IEnumerator ResetMoving(){
+        yield return new WaitForSeconds(movementSmoothingTime * 3);
+        moving = false;
+    }
+
+    void OnTriggerEnter(Collider col){
+        if (col.CompareTag("Limits")){
+            positionToGo = currentPosition;
+        }
+    }
+
+    void OnCollisionEnter(Collision col){
+        if (col.gameObject.layer == Mathf.RoundToInt(Mathf.Log(whatIsEnemy.value, 2))){
+            BishopController bishop = col.gameObject.GetComponent<BishopController>();
+            KnightController knight = col.gameObject.GetComponent<KnightController>();
+            PawnController pawn = col.gameObject.GetComponent<PawnController>();
+            RookController rook = col.gameObject.GetComponent<RookController>();
+            if (bishop != null){
+                if (bishop.positionToGo == positionToGo){
+                    if (Vector3.Distance(transform.position, positionToGo) > Vector3.Distance(col.transform.position, bishop.positionToGo)){
+                        positionToGo = currentPosition;
+                    }
+                }
+            }else if (knight != null){
+                if (knight.positionToGo == positionToGo){
+                    if (Vector3.Distance(transform.position, positionToGo) > Vector3.Distance(col.transform.position, knight.positionToGo)){
+                        positionToGo = currentPosition;
+                    }
+                }
+            }else if (pawn != null){
+                if (pawn.positionToGo == positionToGo){
+                    if (Vector3.Distance(transform.position, positionToGo) > Vector3.Distance(col.transform.position, pawn.positionToGo)){
+                        positionToGo = currentPosition;
+                    }
+                }
+            }else if (rook != null){
+                if (rook.positionToGo == positionToGo){
+                    if (Vector3.Distance(transform.position, positionToGo) > Vector3.Distance(col.transform.position, rook.positionToGo)){
+                        positionToGo = currentPosition;
+                    }
+                }
+            }
+        }
+
+        if (col.gameObject.tag == "Player"){
+            PlayerController player = col.gameObject.GetComponent<PlayerController>();
+            if (player.positionToGo == positionToGo && moving){
+                player.Damage();
+                positionToGo = currentPosition;
+            }
+        }
+    }
+}