1 files changed, 69 insertions, 0 deletions
diff --git a/MorgSimulator/Framework/Simulator.cs b/MorgSimulator/Framework/Simulator.cs
new file mode 100644
index 0000000..6e8c694
--- /dev/null
+++ b/MorgSimulator/Framework/Simulator.cs
@@ -0,0 +1,69 @@
+using System.Collections.Generic;
+
+namespace MorgSimulator.Framework
+{
+    public abstract class Simulator<T> where T : Entity
+    {
+        protected readonly List<T> _entities = [];
+        protected const double FEEDING_DISTANCE = 1.0;
+
+        public void AddEntity(T entity)
+        {
+            _entities.Add(entity);
+        }
+
+        public IEnumerable<T> GetAllEntities()
+        {
+            return _entities;
+        }
+
+        public IEntityIterator<T> CreateIterator()
+        {
+            return new EntityIterator<T>(_entities);
+        }
+
+        public void Run(int runTime)
+        {
+            for (int timeStep = 0; timeStep < runTime; timeStep++)
+                ProcessTimeStep();
+        }
+
+        protected virtual void ProcessTimeStep()
+        {
+            foreach (var entity in _entities)
+                if (entity.IsAlive)
+                {
+                    FindPreyIfNeeded(entity);
+                    entity.Move();
+                    CheckAndFeed(entity);
+                }
+        }
+
+        protected virtual void FindPreyIfNeeded(T entity)
+        {
+            if (entity.Prey == null || !entity.Prey.IsAlive)
+            {
+                var nearestPrey = FindNearestPrey(entity);
+
+                if (nearestPrey != null)
+                {
+                    nearestPrey.Attach(entity);
+
+                    entity.Prey = nearestPrey as T;
+                    entity.Direction = entity.CalculateDirectionToTarget(nearestPrey.Location);
+                }
+            }
+        }
+
+        protected virtual void CheckAndFeed(T entity)
+        {
+            if (entity.Prey != null && entity.Prey.IsAlive &&
+                entity.DistanceTo(entity.Prey.Location) <= FEEDING_DISTANCE)
+                entity.Feed();
+        }
+
+#nullable enable
+        protected abstract Entity? FindNearestPrey(T predator);
+#nullable disable
+    }
+}