add: fully functional melee enemy

Assets/Scripts/Enemies/MeleeEnemy.cs

@@ -3,7 +3,6 @@ using UnityEngine.AI;
 
 public class MeleeEnemy : Enemy
 {
-    public float speed = 1f;
     public float detectionRadius = 5f;
     public float patrollRadius = 3f;
     public float damage = 5f;
@@ -14,6 +13,7 @@ public class MeleeEnemy : Enemy
     [SerializeField] MeleeEnemyState currentState = MeleeEnemyState.Patrolling;
     Vector3 patrollingTarget;
     NavMeshAgent navMeshAgent;
+    float currentDelay = 0;
 
     void Start() {
         target = FindFirstObjectByType<Player>();
@@ -24,22 +24,52 @@ public class MeleeEnemy : Enemy
     void Update() {
         switch (currentState) {
             case MeleeEnemyState.Patrolling:
-                Vector3 vectorToTarget = (target.transform.position - transform.position).normalized;
-                bool canSee = false;
-                if (Physics.Raycast(transform.position, vectorToTarget, out RaycastHit hit, detectionRadius)) {
-                    if (hit.transform.CompareTag("Player")) canSee = true;
-                }
-                if (canSee) currentState = MeleeEnemyState.Pursuing;
+                if (CanSeeTarget()) currentState = MeleeEnemyState.Pursuing;
                 else {
-                    if (Vector3.Distance(transform.position, patrollingTarget) <= 0.1f) patrollingTarget = GetPatrollingTarget();
+                    if (Vector3.Distance(transform.position - new Vector3(0, navMeshAgent.baseOffset * transform.localScale.y), navMeshAgent.destination) <= 0.1f) patrollingTarget = GetPatrollingTarget();
                     navMeshAgent.destination = patrollingTarget;
                 }
                 break;
+            case MeleeEnemyState.Pursuing:
+                if (!CanSeeTarget()) currentState = MeleeEnemyState.Patrolling;
+                navMeshAgent.destination = target.transform.position;
+                if (Vector3.Distance(transform.position, target.transform.position) <= attackRadius) currentState = MeleeEnemyState.Attacking;
+                break;
+            case MeleeEnemyState.Attacking:
+                navMeshAgent.ResetPath();
+                if (Vector3.Distance(transform.position, target.transform.position) >= attackRadius) currentState = CanSeeTarget() ? MeleeEnemyState.Pursuing : MeleeEnemyState.Patrolling;
+                else if (currentDelay >= 1 / attackRate) {
+                    target.DealDamage(damage);
+                    currentDelay = 0;
+                }
+                break;
+        }
+        if (attackRate != 0) {
+            if (currentState == MeleeEnemyState.Attacking) currentDelay = Mathf.Clamp(currentDelay += Time.deltaTime, 0, 1 / attackRate);
+            else currentDelay = 0;
         }
     }
 
     Vector3 GetPatrollingTarget() {
-        return Vector3.zero;
+        NavMeshPath path = new();
+        while (true) {
+            Vector2 circle = Random.insideUnitCircle * patrollRadius;
+            Vector3 maybeDestination = transform.position + new Vector3(circle.x, 0, circle.y);
+            NavMesh.CalculatePath(transform.position, maybeDestination, NavMesh.AllAreas, path);
+            if (path.status == NavMeshPathStatus.PathComplete) return maybeDestination;
+            if (path.status != NavMeshPathStatus.PathInvalid) break;
+        }
+        Vector3 destination = path.corners[^1];
+        destination.y = transform.position.y;
+        return destination;
+    }
+
+    bool CanSeeTarget() {Vector3 vectorToTarget = (target.transform.position - transform.position).normalized;
+        bool canSee = false;
+        if (Physics.Raycast(transform.position, vectorToTarget, out RaycastHit hit, detectionRadius)) {
+            if (hit.transform.CompareTag("Player")) canSee = true;
+        }
+        return canSee;
     }
 }
 

Assets/Scripts/Game/GameController.cs

@@ -11,6 +11,7 @@ public class GameController : MonoBehaviour
     public string deploySceneName;
     public List<LevelInfo> levels;
     public List<EnemyInfo> enemies;
+    public int startEnemiesNumber = 1;
     public Dictionary<BulletType, int> inventory = new();
 
     public void Awake() {
@@ -23,7 +24,7 @@ public class GameController : MonoBehaviour
             return li;
         }).ToList();
         levels.ForEach(li => {
-            AddEnemyInLevel(SelectEnemyWeighted().prefab, li.sceneName);
+            for (int i = 0; i < startEnemiesNumber; ++i) AddEnemyInLevel(SelectEnemyWeighted().prefab, li.sceneName);
         });
         foreach (BulletType i in Enum.GetValues(typeof(BulletType))) {
             if (i == BulletType.None) continue;