riversong code showcase

Source/Riversong/Game/WorldGen/Operations/CritterHerdsGeneratorOperation.cs

@@ -0,0 +1,36 @@
+using Cysharp.Threading.Tasks;
+using UnityEngine;
+
+namespace DanieleMarotta.RiversongCodeShowcase
+{
+    public class CritterHerdsGeneratorOperation : IWorldGeneratorOperation
+    {
+        [InjectService]
+        private IEntityCollection _entityCollection;
+
+        [InjectService]
+        private IGameDatabase _gameDatabase;
+
+        [InjectService]
+        private IAgentFactory _agentFactory;
+
+        public UniTask Execute(World world)
+        {
+            var critters = _gameDatabase.OfType<CritterDefinition>();
+
+            foreach (var eligibleCenter in world.CritterHerdsState.EligibleCenters)
+            {
+                var critter = critters[Random.Range(0, critters.Count)];
+
+                var herd = _entityCollection.CreateAndAdd<CritterHerd>();
+                herd.CritterDefinition = critter;
+                herd.Center = eligibleCenter;
+                herd.MaxCritterCount = Random.Range(critter.MinCritterCount, critter.MaxCritterCount + 1);
+
+                _agentFactory.InitializeAgentSource(herd);
+            }
+
+            return UniTask.CompletedTask;
+        }
+    }
+}