Merge pull request 'Goodies' (#2) from new_stuff into master

.circleci/config.yml

@@ -1,46 +0,0 @@
-version: 2.1
-
-defaults: &defaults
-  working_directory: ~/repo
-  docker:
-    - image: mcr.microsoft.com/dotnet/core/sdk:3.0
-      environment:
-        DOTNET_SKIP_FIRST_TIME_EXPERIENCE: 1
-        DOTNET_CLI_TELEMETRY_OPTOUT: 1
-
-jobs:
-  test:
-    <<: *defaults
-    steps:
-      - checkout
-      - run: dotnet restore
-      - run: dotnet build -c Release
-      - run: dotnet test -c Release
-      - persist_to_workspace:
-          root: .
-          paths: ./encompass-cs/bin
-
-  deploy:
-    <<: *defaults
-    steps:
-      - checkout
-      - attach_workspace:
-          at: .
-      - run: dotnet nuget push ./encompass-cs/bin/Release/EncompassECS.Framework.*.nupkg -k $API_KEY -s $NUGET_SOURCE
-
-workflows:
-  version: 2
-  test_and_deploy:
-    jobs:
-      - test:
-          filters:
-            tags:
-              only: /.*/
-      - deploy:
-          requires:
-            - test
-          filters:
-            branches:
-              ignore: /.*/
-            tags:
-              only: /^\d+\.\d+\.\d+(-preview\d+)?$/

.drone.yml

@@ -0,0 +1,24 @@
+    kind: pipeline
+    type: docker
+    name: default
+
+    workspace:
+      path: /build
+
+    steps:
+    - name: test
+      image: mcr.microsoft.com/dotnet/core/sdk:3.1
+      commands:
+        - dotnet build -c Release
+        - dotnet test -c Release
+
+    - name: deploy
+      image: mcr.microsoft.com/dotnet/core/sdk:3.1
+      environment:
+        API_KEY:
+          from_secret: API_KEY
+      commands:
+        - dotnet nuget push /build/encompass-cs/bin/Release/EncompassECS.Framework.*.nupkg -s https://api.nuget.org/v3/index.json -k $API_KEY 
+      when:
+        ref:
+        - refs/tags/*.*.*

TODO

@@ -3,9 +3,5 @@
 - method to remove all components of a type without destroying Entities
 - method to remove a component of a type without destroying entity
 
-- auto destroy entities that no longer have components 
-
-- fast lookup for messages that contain entity references instead of `Where` loop?
-
 - look at test coverage
 - docs

encompass-cs/Collections/ComponentStore.cs

@@ -33,7 +33,6 @@ namespace Encompass
 
         private TypedComponentStore<TComponent> Lookup<TComponent>() where TComponent : struct, IComponent
         {
-            //RegisterComponentType<TComponent>();
             return Stores[typeof(TComponent)] as TypedComponentStore<TComponent>;
         }
 

encompass-cs/Collections/MessageStore.cs

@@ -53,6 +53,11 @@ namespace Encompass
             return Lookup<TMessage>().WithEntity(entityID);
         }
 
+        public bool SomeWithEntity<TMessage>(int entityID) where TMessage : struct, IMessage, IHasEntity
+        {
+            return Lookup<TMessage>().SomeWithEntity(entityID);
+        }
+
         public void ProcessDelayedMessages(double dilatedDelta, double realtimeDelta)
         {
             foreach (var store in Stores.Values)

encompass-cs/Collections/TypedMessageStore.cs

@@ -93,6 +93,11 @@ namespace Encompass
             return entityToMessage.ContainsKey(entityID) ? entityToMessage[entityID] : System.Linq.Enumerable.Empty<TMessage>();
         }
 
+        public bool SomeWithEntity(int entityID)
+        {
+            return entityToMessage.ContainsKey(entityID) && entityToMessage[entityID].Count > 0;
+        }
+
         public override void Clear()
         {
             store.Clear();

encompass-cs/ComponentManager.cs

@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using MoonTools.FastCollections;
 
 namespace Encompass
 {
@@ -73,7 +74,14 @@ namespace Encompass
             return false;
         }
 
-        public bool UpdateComponent<TComponent>(int entityID, TComponent component, int priority) where TComponent : struct, IComponent
+        internal void AddImmediateComponent<TComponent>(int entityID, TComponent component) where TComponent : struct, IComponent
+        {
+            immediateComponentStore.Set(entityID, component);
+            replayStore.Set(entityID, component);
+            upToDateComponentStore.Set(entityID, component);
+        }
+
+        internal bool UpdateComponent<TComponent>(int entityID, TComponent component, int priority) where TComponent : struct, IComponent
         {
             var result = upToDateComponentStore.Set(entityID, component, priority);
             if (result)
@@ -83,6 +91,12 @@ namespace Encompass
             return result;
         }
 
+        internal void AddComponent<TComponent>(int entityID, TComponent component) where TComponent : struct, IComponent
+        {
+            upToDateComponentStore.Set(entityID, component);
+            replayStore.Set(entityID, component);
+        }
+
         // existing or immediate reads
 
         internal IEnumerable<(TComponent, int)> ReadExistingAndImmediateComponentsByType<TComponent>() where TComponent : struct, IComponent
@@ -249,5 +263,10 @@ namespace Encompass
                 drawLayerManager.UnRegisterComponentWithLayer<TComponent>(entityID);
             }
         }
+
+        public bool UpToDateEntityIsEmpty(int entityID)
+        {
+            return upToDateComponentStore.EntityBitArray(entityID).AllFalse();
+        }
     }
 }

encompass-cs/Engine.cs

@@ -53,6 +53,8 @@ namespace Encompass
             }
         }
 
+        private HashSet<int> _newlyCreatedEntities = new HashSet<int>();
+
         protected Engine()
         {
             ID = Guid.NewGuid();
@@ -158,6 +160,24 @@ namespace Encompass
             this.trackingManager = trackingManager;
         }
 
+        internal void CheckMessageRead<TMessage>() where TMessage : struct, IMessage
+        {
+            if (!receiveTypes.Contains(typeof(TMessage)))
+            {
+                throw new IllegalReadException("Engine {0} tried to read undeclared Message {1}", this.GetType().Name, typeof(TMessage).Name);
+            }
+        }
+
+        private bool EntityCreatedThisFrame(int entityID)
+        {
+            return _newlyCreatedEntities.Contains(entityID);
+        }
+
+        internal void ClearNewlyCreatedEntities()
+        {
+            _newlyCreatedEntities.Clear();
+        }
+
         /// <summary>
         /// Runs once per World update with the calculated delta-time.
         /// </summary>
@@ -169,7 +189,9 @@ namespace Encompass
         /// </summary>
         protected Entity CreateEntity()
         {
-            return entityManager.CreateEntity();
+            var entity = entityManager.CreateEntity();
+            _newlyCreatedEntities.Add(entity.ID);
+            return entity;
         }
 
         /// <summary>
@@ -180,6 +202,14 @@ namespace Encompass
             return entityManager.EntityExists(entity.ID);
         }
 
+        /// <summary>
+        /// Returns true if an Entity with the specified ID exists.
+        /// </summary>
+        protected bool EntityExists(int entityID)
+        {
+            return entityManager.EntityExists(entityID);
+        }
+
         /// <summary>
         /// Returns an Entity containing the specified Component type.
         /// </summary>
@@ -448,6 +478,37 @@ namespace Encompass
             }
         }
 
+        /// <summary>
+        /// An alternative to SetComponent that can be used for new Entities and does not require setting write priority.
+        /// </summary>
+        /// <exception cref="Encompass.Exceptions.IllegalWriteException">
+        /// Thrown when the Engine does not declare that it Writes the given Component Type.
+        /// </exception>
+        protected void AddComponent<TComponent>(Entity entity, TComponent component) where TComponent : struct, IComponent
+        {
+            if (!EntityCreatedThisFrame(entity.ID))
+            {
+                throw new IllegalWriteException("AddComponent used on Entity that was not created in this context. Use SetComponent instead.");
+            }
+
+            if (writeImmediateTypes.Contains(typeof(TComponent)))
+            {
+                componentManager.AddImmediateComponent(entity.ID, component);
+                trackingManager.ImmediateUpdateTracking(entity.ID, typeof(TComponent));
+            }
+            else
+            {
+                componentManager.AddComponent(entity.ID, component);
+            }
+
+            trackingManager.RegisterAddition(entity.ID, typeof(TComponent));
+
+            if (component is IDrawableComponent drawableComponent)
+            {
+                componentManager.RegisterDrawableComponent(entity.ID, component, drawableComponent.Layer);
+            }
+        }
+
         /// <summary>
         /// Sends a Message.
         /// </summary>
@@ -490,11 +551,7 @@ namespace Encompass
         /// </exception>
         protected IEnumerable<TMessage> ReadMessages<TMessage>() where TMessage : struct, IMessage
         {
-            if (!receiveTypes.Contains(typeof(TMessage)))
-            {
-                throw new IllegalReadException("Engine {0} tried to read undeclared Message {1}", this.GetType().Name, typeof(TMessage).Name);
-            }
-
+            CheckMessageRead<TMessage>();
             return messageManager.GetMessagesByType<TMessage>();
         }
 
@@ -506,6 +563,7 @@ namespace Encompass
         /// </exception>
         protected TMessage ReadMessage<TMessage>() where TMessage : struct, IMessage
         {
+            CheckMessageRead<TMessage>();
             return messageManager.First<TMessage>();
         }
 
@@ -517,11 +575,7 @@ namespace Encompass
         /// </exception>
         protected bool SomeMessage<TMessage>() where TMessage : struct, IMessage
         {
-            if (!receiveTypes.Contains(typeof(TMessage)))
-            {
-                throw new IllegalReadException("Engine {0} tried to read undeclared Message {1}", GetType().Name, typeof(TMessage).Name);
-            }
-
+            CheckMessageRead<TMessage>();
             return messageManager.Any<TMessage>();
         }
 
@@ -648,16 +702,36 @@ namespace Encompass
         }
 
         /// <summary>
-        /// Efficiently reads Messages of a given type that all reference the same Entity.
+        /// Efficiently reads Messages of a given type that all reference the given Entity.
         /// </summary>
         /// <typeparam name="TMessage">The Message subtype.</typeparam>
         /// <param name="entity">The entity that all messages in the IEnumerable refer to.</param>
         /// <returns></returns>
         protected IEnumerable<TMessage> ReadMessagesWithEntity<TMessage>(Entity entity) where TMessage : struct, IMessage, IHasEntity
         {
+            CheckMessageRead<TMessage>();
             return messageManager.WithEntity<TMessage>(entity.ID);
         }
 
+        /// <summary>
+        /// Efficiently reads a single Message of a given type that references a given Entity.
+        /// It is recommended to use this method in conjunction with SomeMessageWithEntity to prevent errors.
+        /// </summary>
+        protected TMessage ReadMessageWithEntity<TMessage>(Entity entity) where TMessage : struct, IMessage, IHasEntity
+        {
+            CheckMessageRead<TMessage>();
+            return messageManager.WithEntitySingular<TMessage>(entity.ID);
+        }
+
+        /// <summary>
+        /// Efficiently checks if any Message of a given type referencing a given Entity exists.
+        /// </summary>
+        protected bool SomeMessageWithEntity<TMessage>(Entity entity) where TMessage : struct, IMessage, IHasEntity
+        {
+            CheckMessageRead<TMessage>();
+            return messageManager.SomeWithEntity<TMessage>(entity.ID);
+        }
+
         internal void CheckAndUpdateTracking(int entityID)
         {
             if (_trackedEntities.Contains(entityID) && !entityQuery.CheckEntity(entityID, componentManager.ExistingBits))

encompass-cs/EntityManager.cs

@@ -8,7 +8,7 @@ namespace Encompass
         private readonly int entityCapacity;
         private readonly IDManager idManager = new IDManager();
         private readonly HashSet<int> IDs = new HashSet<int>();
-  
+
         private readonly HashSet<int> entitiesMarkedForDestroy = new HashSet<int>();
 
         private readonly ComponentManager componentManager;
@@ -76,5 +76,17 @@ namespace Encompass
 
             entitiesMarkedForDestroy.Clear();
         }
+
+        // NOTE: this is very suboptimal
+        public void PruneEmptyEntities()
+        {
+            foreach (var id in EntityIDs)
+            {
+                if (componentManager.UpToDateEntityIsEmpty(id))
+                {
+                    MarkForDestroy(id);
+                }
+            }
+        }
     }
 }

encompass-cs/MessageManager.cs

@@ -56,5 +56,17 @@ namespace Encompass
         {
             return messageStore.WithEntity<TMessage>(entityID);
         }
+
+        internal TMessage WithEntitySingular<TMessage>(int entityID) where TMessage : struct, IMessage, IHasEntity
+        {
+            var enumerator = messageStore.WithEntity<TMessage>(entityID).GetEnumerator();
+            enumerator.MoveNext();
+            return enumerator.Current;
+        }
+
+        internal bool SomeWithEntity<TMessage>(int entityID) where TMessage : struct, IMessage, IHasEntity
+        {
+            return messageStore.SomeWithEntity<TMessage>(entityID);
+        }
     }
 }

encompass-cs/World.cs

@@ -54,9 +54,12 @@ namespace Encompass
                 {
                     engine.Update(dt);
                 }
+
+                engine.ClearNewlyCreatedEntities();
             }
 
             messageManager.ClearMessages();
+            entityManager.PruneEmptyEntities();
             entityManager.DestroyMarkedEntities(enginesInOrder);
 
             componentManager.RemoveMarkedComponents();

encompass-cs/WorldBuilder.cs

@@ -36,7 +36,7 @@ namespace Encompass
 
         private readonly HashSet<Engine> senders = new HashSet<Engine>();
 
-        private readonly HashSet<Type> componentTypesToRegister = new HashSet<Type>();
+        private readonly HashSet<Type> componentTypesToPreload = new HashSet<Type>();
 
         private readonly HashSet<Type> messageTypes = new HashSet<Type>();
 
@@ -87,8 +87,6 @@ namespace Encompass
         public void SetComponent<TComponent>(Entity entity, TComponent component) where TComponent : struct, IComponent
         {
             RegisterComponentType<TComponent>();
-            componentTypesToRegister.Add(typeof(TComponent));
-
             startingExistingComponentStore.Set(entity.ID, component);
             startingUpToDateComponentStore.Set(entity.ID, component);
 
@@ -104,6 +102,7 @@ namespace Encompass
             if (!typeToIndex.ContainsKey(typeof(TComponent)))
             {
                 typeToIndex.Add(typeof(TComponent), typeToIndex.Count);
+                componentTypesToPreload.Add(typeof(TComponent));
                 componentManager.RegisterComponentType<TComponent>();
                 startingExistingComponentStore.RegisterComponentType<TComponent>();
                 startingUpToDateComponentStore.RegisterComponentType<TComponent>();
@@ -115,11 +114,6 @@ namespace Encompass
             messageTypes.UnionWith(types);
         }
 
-        internal void AddComponentTypeToRegister(Type componentType)
-        {
-            componentTypesToRegister.Add(componentType);
-        }
-
         /// <summary>
         /// Adds the specified Engine to the World.
         /// </summary>
@@ -164,11 +158,6 @@ namespace Encompass
                 }
             }
 
-            foreach (var componentType in engine.readTypes.Union(engine.writeTypes).Union(engine.readImmediateTypes))
-            {
-                AddComponentTypeToRegister(componentType);
-            }
-
             foreach (var receiveType in engine.receiveTypes.Union(engine.readImmediateTypes))
             {
                 if (!typeToReaders.ContainsKey(receiveType))
@@ -196,6 +185,7 @@ namespace Encompass
         /// </summary>
         public OrderedRenderer<TComponent> AddOrderedRenderer<TComponent>(OrderedRenderer<TComponent> renderer) where TComponent : struct, IComponent, IDrawableComponent
         {
+            RegisterComponentType<TComponent>();
             renderer.AssignEntityManager(entityManager);
             renderer.AssignComponentManager(componentManager);
             renderManager.RegisterOrderedRenderer<TComponent>(renderer.InternalRender);
@@ -364,16 +354,23 @@ namespace Encompass
                 throw new EngineWriteConflictException(errorString);
             }
 
-            var engineOrder = new List<Engine>();
-
-            foreach (var registeredComponentType in componentTypesToRegister)
+            // doing reflection to grab all component types, because not all writes need to be declared
+            foreach (var assembly in AppDomain.CurrentDomain.GetAssemblies())
             {
-                var method = typeof(WorldBuilder).GetMethod("RegisterComponentType", BindingFlags.NonPublic | BindingFlags.Instance);
-                var generic = method.MakeGenericMethod(registeredComponentType);
-                generic.Invoke(this, null);
+                foreach (var componentType in assembly.GetTypes())
+                {
+                    if (typeof(IComponent).IsAssignableFrom(componentType) && componentType.IsValueType && !componentType.IsEnum && !componentType.IsPrimitive)
+                    {
+                        var method = typeof(WorldBuilder).GetMethod("RegisterComponentType", BindingFlags.NonPublic | BindingFlags.Instance);
+                        var generic = method.MakeGenericMethod(componentType);
+                        generic.Invoke(this, null);
+                    }
+                }
             }
 
-            PreloadJIT(componentTypesToRegister, messageTypes);
+            PreloadJIT(componentTypesToPreload, messageTypes);
+
+            var engineOrder = new List<Engine>();
 
             foreach (var engine in engineGraph.TopologicalSort())
             {

encompass-cs/encompass-cs.csproj

@@ -3,7 +3,7 @@
     <TargetFramework>netstandard2.0</TargetFramework>
     <RootNamespace>Encompass</RootNamespace>
     <PackageId>EncompassECS.Framework</PackageId>
-    <Version>0.19.0</Version>
+    <Version>0.20.0</Version>
     <Authors>Evan Hemsley</Authors>
     <PackageRequireLicenseAcceptance>true</PackageRequireLicenseAcceptance>
     <Company>Moonside Games</Company>
@@ -27,4 +27,4 @@
     <PackageReference Include="MoonTools.FastCollections" Version="1.0.0" />
     <PackageReference Include="System.Collections.Immutable" Version="1.7.0" />
   </ItemGroup>
-</Project>
+</Project>

test/EngineTest.cs

@@ -415,8 +415,8 @@ namespace Tests
             Assert.Throws<IllegalReadException>(() => world.Update(0.01f));
         }
 
-        struct EntityMessage : IMessage, IHasEntity 
-        { 
+        struct EntityMessage : IMessage, IHasEntity
+        {
             public EntityMessage(Entity entity, int myInt)
             {
                 Entity = entity;
@@ -497,6 +497,58 @@ namespace Tests
             entityMessageResults.Should().BeEmpty();
         }
 
+        [Sends(typeof(EntityMessage), typeof(MockMessage))]
+        class EntityMessageSingularEmitterEngine : Engine
+        {
+            private Entity _entity;
+
+            public EntityMessageSingularEmitterEngine(Entity entity)
+            {
+                _entity = entity;
+            }
+
+            public override void Update(double dt)
+            {
+                SendMessage(new EntityMessage(_entity, 2));
+                SendMessage(new MockMessage());
+            }
+        }
+
+        static EntityMessage entityMessageResult;
+
+        [Receives(typeof(EntityMessage))]
+        class SingularMessageWithEntityEngine : Engine
+        {
+            private Entity _entity;
+
+            public SingularMessageWithEntityEngine(Entity entity)
+            {
+                _entity = entity;
+            }
+
+            public override void Update(double dt)
+            {
+                entityMessageResult = ReadMessageWithEntity<EntityMessage>(_entity);
+            }
+        }
+
+        [Test]
+        public void MessageWithEntity()
+        {
+            var worldBuilder = new WorldBuilder();
+
+            var entity = worldBuilder.CreateEntity();
+
+            worldBuilder.AddEngine(new EntityMessageSingularEmitterEngine(entity));
+            worldBuilder.AddEngine(new SingularMessageWithEntityEngine(entity));
+
+            var world = worldBuilder.Build();
+
+            world.Update(0.01);
+
+            entityMessageResult.Should().Be(new EntityMessage(entity, 2));
+        }
+
         class SomeComponentTestEngine : Engine
         {
             public override void Update(double dt)
@@ -1240,6 +1292,132 @@ namespace Tests
             undilatedDeltaTime.Should().Be(0.5);
         }
 
+        class AddComponentWithoutPriorityEngine : Engine
+        {
+            public override void Update(double dt)
+            {
+                var entity = CreateEntity();
+                AddComponent(entity, new MockComponent());
+
+                var entityB = CreateEntity();
+                AddComponent(entityB, new MockComponent());
+            }
+        }
+
+        [Test]
+        public void AddComponent()
+        {
+            var worldBuilder = new WorldBuilder();
+
+            worldBuilder.AddEngine(new AddComponentWithoutPriorityEngine());
+            worldBuilder.AddEngine(new ReadComponentsTestEngine());
+
+            var world = worldBuilder.Build();
+
+            world.Update(0.01);
+            world.Update(0.01);
+
+            resultComponents.Should().HaveCount(2);
+
+            world.Update(0.01);
+
+            resultComponents.Should().HaveCount(4);
+        }
+
+        [Reads(typeof(MockComponent))]
+        class AddComponentToPreviouslyExistingEntityEngine : Engine
+        {
+            public override void Update(double dt)
+            {
+                var (component, entity) = ReadComponentIncludingEntity<MockComponent>();
+
+                AddComponent(entity, new MockComponent());
+            }
+        }
+
+        [Test]
+        public void AddComponentToPreviouslyExistingEntityTest()
+        {
+            var worldBuilder = new WorldBuilder();
+            worldBuilder.AddEngine(new AddComponentToPreviouslyExistingEntityEngine());
+
+            var entity = worldBuilder.CreateEntity();
+            worldBuilder.SetComponent(entity, new MockComponent());
+
+            var world = worldBuilder.Build();
+
+            Assert.Throws<IllegalWriteException>(() => world.Update(0.01));
+        }
+
+        [WritesImmediate(typeof(MockComponentB))]
+        class AddImmediateComponentEngine : Engine
+        {
+            public override void Update(double dt)
+            {
+                var entity = CreateEntity();
+                AddComponent(entity, new MockComponentB(5));
+            }
+        }
+
+        [ReadsImmediate(typeof(MockComponentB))]
+        class ReadImmediateComponentEngine : Engine
+        {
+            public override void Update(double dt)
+            {
+                var (component, entity) = ReadComponentIncludingEntity<MockComponentB>();
+
+                getComponentResult = component;
+            }
+        }
+
+        [Test]
+        public void AddImmediateComponentTest()
+        {
+            getComponentResult = default(MockComponentB);
+
+            var worldBuilder = new WorldBuilder();
+
+            worldBuilder.AddEngine(new AddImmediateComponentEngine());
+            worldBuilder.AddEngine(new ReadImmediateComponentEngine());
+
+            var world = worldBuilder.Build();
+
+            world.Update(0.01);
+
+            getComponentResult.Should().Be(new MockComponentB(5));
+        }
+
+        static bool entityExistsResult;
+
+        class EntityExistsEngine : Engine
+        {
+            private int _id;
+
+            public EntityExistsEngine(int id)
+            {
+                _id = id;
+            }
+
+            public override void Update(double dt)
+            {
+                entityExistsResult = EntityExists(_id);
+            }
+        }
+
+        [Test]
+        public void PruneEmptyEntities()
+        {
+            var worldBuilder = new WorldBuilder();
+            var entity = worldBuilder.CreateEntity();
+            var id = entity.ID;
+
+            var world = worldBuilder.Build();
+
+            world.Update(0.01);
+
+            entityExistsResult.Should().BeFalse();
+        }
+
         public class QueryTests
         {
             struct MockComponentB : IComponent { }