fix panic when using runtime HasComponent

encompass-cs/Collections/ComponentStore.cs

@@ -33,7 +33,7 @@ namespace Encompass
 
         public bool Has(Type type, Entity entity)
         {
-            return Stores[type].Has(entity);
+            return Stores.ContainsKey(type) && Stores[type].Has(entity);
         }
 
         public TComponent Get<TComponent>(Entity entity) where TComponent : struct, IComponent

test/ComponentTest.cs

@@ -308,6 +308,8 @@ namespace Tests
             world.Update(0.01);
         }
 
+        static bool hasComponentRuntimeTypeResult;
+
         [Receives(typeof(HasComponentTestMessage))]
         [Reads(typeof(MockComponent))]
         class HasComponentWithRuntimeTypeEngine : Engine
@@ -316,7 +318,7 @@ namespace Tests
             {
                 foreach (var hasComponentTestEngine in ReadMessages<HasComponentTestMessage>())
                 {
-                    Assert.IsTrue(HasComponent(hasComponentTestEngine.entity, typeof(MockComponent)));
+                    hasComponentRuntimeTypeResult = HasComponent(hasComponentTestEngine.entity, typeof(MockComponent));
                 }
             }
         }
@@ -342,6 +344,27 @@ namespace Tests
             var world = worldBuilder.Build();
 
             world.Update(0.01);
+
+            Assert.IsTrue(hasComponentRuntimeTypeResult);
+        }
+
+        [Test]
+        public void HasComponentWithRuntimeTypeFalseWhenNoneHaveBeenCreated()
+        {
+            var worldBuilder = new WorldBuilder();
+            worldBuilder.AddEngine(new HasComponentWithRuntimeTypeEngine());
+
+            var entity = worldBuilder.CreateEntity();
+
+            HasComponentTestMessage hasComponentTestMessage;
+            hasComponentTestMessage.entity = entity;
+            worldBuilder.SendMessage(hasComponentTestMessage);
+
+            var world = worldBuilder.Build();
+
+            world.Update(0.01);
+
+            Assert.IsFalse(hasComponentRuntimeTypeResult);
         }
 
         struct RemoveComponentTestMessage : IMessage