avoid duplicate in Nosmates

Author: Roxeez

TaleKit/Game/Entities/Entity.cs

@@ -10,12 +10,32 @@ public enum EntityType
     Drop = 9
 }
 
-public abstract class Entity
+public abstract class Entity : IEquatable<Entity>
 {
     public int Id { get; set; }
     public string Name { get; set; }
     public Position Position { get; set; }
     public Map Map { get; set; }
 
     public abstract EntityType EntityType { get; }
+
+    public bool Equals(Entity other)
+    {
+        if (other is null) return false;
+        if (ReferenceEquals(this, other)) return true;
+        return Id == other.Id && EntityType == other.EntityType;
+    }
+
+    public override bool Equals(object obj)
+    {
+        if (obj is null) return false;
+        if (ReferenceEquals(this, obj)) return true;
+        if (obj.GetType() != GetType()) return false;
+        return Equals((Entity)obj);
+    }
+
+    public override int GetHashCode()
+    {
+        return HashCode.Combine(Id, (int)EntityType);
+    }
 }

TaleKit/Game/Entities/Player.cs

@@ -7,5 +7,5 @@ public class Player : LivingEntity
     public int Level { get; set; }
     public int HeroLevel { get; set; }
 
-    public List<Nosmate> Nosmates { get; set; } = [];
+    public HashSet<Nosmate> Nosmates { get; set; } = [];
 }