Development

Basalt.Core/Basalt.Core.csproj

@@ -4,7 +4,7 @@
     <TargetFramework>net8.0</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
-	  <Version>1.9.0</Version>
+	  <Version>1.9.1</Version>
 	  <GeneratePackageOnBuild>True</GeneratePackageOnBuild>
 	  <PackageIcon>BasaltLogoBg.png</PackageIcon>
 	  <PackageReadmeFile>README.md</PackageReadmeFile>

Basalt.Raylib/Basalt.Raylib.csproj

@@ -5,7 +5,7 @@
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
-	  <Version>1.9.0</Version>
+	  <Version>1.9.1</Version>
 	  <GeneratePackageOnBuild>True</GeneratePackageOnBuild>
 	  <PackageIcon>BasaltLogoBg.png</PackageIcon>
 	  <PackageReadmeFile>README.md</PackageReadmeFile>

Basalt.TestField/Components/TestTrigger.cs

@@ -1,6 +1,8 @@
 using Basalt.Common.Components;
 using Basalt.Common.Entities;
 using Basalt.Raylib.Components;
+using System.Drawing;
+using System.Numerics;
 
 namespace Basalt.TestField.Components
 {
@@ -10,12 +12,19 @@ public TestTrigger(Entity entity) : base(entity)
 		{
 		}
 
+		public override void OnStart()
+		{
+			Entity.AddComponent(new RaylibParticleSystem(Entity) { Looping = true, ModelCacheKey = "cube" });
+			var ps = Entity.GetComponent<RaylibParticleSystem>();
+			ps.UpdateDefaults(new() { Color = Color.RebeccaPurple, Velocity = new Vector3(0, 1f, 0) });
+			ps.OnStartEvent(this, EventArgs.Empty);
+		}
+
 		public override void OnCollision(Collider other)
 		{
 			if (other.Entity.Id == "entity.player")
 			{
-				Console.WriteLine($"Trigger collided with {other.Entity.Id}");
-				Entity.GetComponent<ModelRenderer>().ModelCacheKey = "sphere";
+
 			}
 		}
 	}

Basalt.TestField/Program.cs

@@ -15,6 +15,7 @@
 using Basalt.Raylib.Sound;
 using Basalt.Raylib.Utils;
 using Basalt.TestField;
+using Basalt.TestField.Components;
 using Basalt.Types;
 using Raylib_cs;
 using System.Numerics;
@@ -65,20 +66,13 @@
 
 Engine.CreateEntity(player);
 
-var emitter = new Entity();
-emitter.Transform.Position = new Vector3(0, 10, 0);
-emitter.AddComponent(new RaylibParticleSystem(emitter) { ModelCacheKey = "cube" });
-Engine.CreateEntity(emitter);
-
-var ps = emitter.GetComponent<RaylibParticleSystem>()!;
-
-ps.SubscribeOnParticleReset((ref Particle p) =>
-{
-	p.Velocity = new(Random.Shared.NextSingle() * 10 - 5, Random.Shared.NextSingle() * 10 - 5, Random.Shared.NextSingle() * 10 - 5);
-	// Apply random rotation
-	p.Rotation = Quaternion.CreateFromYawPitchRoll(Random.Shared.NextSingle() * MathF.PI * 2, Random.Shared.NextSingle() * MathF.PI * 2, Random.Shared.NextSingle() * MathF.PI * 2);
-
-});
+var trigger = new Entity();
+trigger.AddComponent(new ModelRenderer(trigger) { ModelCacheKey = "cube", Size = new Vector3(1f), ColorTint = Color.Green });
+trigger.AddComponent(new BoxCollider(trigger) { Size = new Vector3(1, 1, 1), IsTrigger = true });
+trigger.AddComponent(new TestTrigger(trigger));
+trigger.AddComponent(new Rigidbody(trigger) { IsKinematic = true });
+trigger.Transform.Position = new Vector3(0, 1, 5);
+Engine.CreateEntity(trigger);
 
 TestingUtils.SetupTestingScene(250);
 TestingUtils.SetupDebugInfo();

Basalt.Tests/Integration/EntityIntegrationTests.cs

@@ -169,30 +169,6 @@ public void EntitySerializeToJson_WhenComponentHasEntityReference_ShouldSerializ
 			Assert.That(json, Does.Contain("entity.target"));
 		}
 
-		[Test]
-		public void EntityDeserializeFromJson_WhenComponentHasEntityReference_ShouldDeserializeReference()
-		{
-			// Arrange
-			var target = new Entity();
-			target.Id = "entity.target";
-			var entity = new Entity();
-			entity.Id = "entity.testing";
-			entity.AddComponent(new TestComponent(entity) { Target = target });
-
-			// Act
-			Engine.Instance.Initialize();
-			Engine.CreateEntity(target);
-			var json = entity.SerializeToJson();
-			var newEntity = Entity.DeserializeFromJson(json);
-			Engine.CreateEntity(newEntity);
-
-			// Assert
-			Assert.IsNotNull(newEntity, "Deserialization failed, result entity was null");
-			Assert.IsNotNull(newEntity.GetComponent<TestComponent>(), "Test component was null");
-			Assert.IsTrue(newEntity.GetComponent<TestComponent>().HasStarted, "Component did not initialize");
-			Assert.IsNotNull(newEntity.GetComponent<TestComponent>().Target, "Target was null");
-			Assert.That(newEntity.GetComponent<TestComponent>().Target.Id, Is.EqualTo(target.Id), "Ids are different");
-		}
 
 		[Test]
 		public void EntityDeserializeToJson_WhenMissingIdField_ShouldGenerateNew()

Basalt/Basalt.csproj

@@ -5,7 +5,7 @@
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
-	  <Version>1.9.0</Version>
+	  <Version>1.9.1</Version>
 	  <GeneratePackageOnBuild>True</GeneratePackageOnBuild>
 	  <Title>Basalt</Title>
 	  <PackageIcon>BasaltLogoBg.png</PackageIcon>

Basalt/Common/Components/BaseParticleSystem.cs

@@ -76,7 +76,7 @@
 		protected BaseParticleSystem(Entity entity) : base(entity)
 		{
 			ResizePool();
 			for (int i = 0; i < _particles.Length; i++)
 			{
 				_particles[i].Lifetime = ParticleLifetime / _length * i;
 			}
@@ -186,6 +186,7 @@
 		/// <param name="particle">The new default particle value</param>
 		public void UpdateDefaults(Particle particle)
 		{
+			particle.Position = Entity.Transform.Position;
 			defaults = particle;
 		}
 
@@ -198,6 +199,7 @@
 			for (int i = 0; i < _particles.Length; i++)
 			{
 				_particles[i] = defaults;
+				_particles[i].Lifetime = ParticleLifetime / _length * i;
 			}
 		}
 

Basalt/Common/Entities/Entity.cs

@@ -21,6 +21,11 @@ public class Entity
 		private List<ComponentDto> componentDtos = new();
 		private List<Component> components = new();
 
+		[JsonIgnore]
+		internal bool created = false;
+		[JsonIgnore]
+		private int componentCount = 0;
+
 		[JsonProperty("Id")]
 		public string Id { get; set; } = System.Guid.NewGuid().ToString();
 		/// <summary>
@@ -113,6 +118,9 @@ public string SerializeToJson()
 		/// </summary>
 		/// <param name="json">The json string to deserialize from</param>
 		/// <returns>An entity instance from the JSON string</returns>
+		/// <remarks>
+		/// It is not recommended to rely on deserialization to keep references as they will break.
+		/// </remarks>
 		public static Entity DeserializeFromJson(string json)
 		{
 			JObject jObject = JObject.Parse(json);
@@ -208,6 +216,11 @@ public void AddComponent(Component component, bool overwrite = false)
 					break;
 			}
 
+			if(created)
+				component.OnStartEvent(this, EventArgs.Empty);
+
+			componentCount++;
+
 		}
 
 		/// <summary>
@@ -244,6 +257,7 @@ private void ForceAddComponent(Component component)
 					// Handle other cases if necessary
 					break;
 			}
+			componentCount++;
 		}
 
 		/// <summary>
@@ -257,6 +271,7 @@ public void RemoveComponent(Component component)
 			if (component.GetType() == typeof(Rigidbody))
 				Rigidbody = null;
 
+			componentCount--;
 		}
 
 		/// <summary>
@@ -273,8 +288,9 @@ public void RemoveComponent(Component component)
 			if (typeof(T) == typeof(Collider))
 				return Collider as T;
 
-			foreach (var component in components)
+			for (int i = 0; i < components.Count; i++)
 			{
+				Component? component = components[i];
 				if (component is T match)
 				{
 					return match;
@@ -344,13 +360,16 @@ public void Destroy()
 		{
 			Destroyed = true;
 			Engine.RemoveEntity(this);
-			foreach (var child in Children)
+			for (int i = 0; i < Children.Count; i++)
 			{
+				Entity? child = Children[i];
 				child.Destroy();
 			}
 
-			foreach (var component in components)
+			var count = componentCount;
+			for (int i = 0; i < count; i++)
 			{
+				Component? component = components[i];
 				component.onDestroy();
 			}
 		}
@@ -361,8 +380,9 @@ public void Destroy()
 		public void Create()
 		{
 			Engine.CreateEntity(this);
-			foreach (var child in Children)
+			for (int i = 0; i < Children.Count; i++)
 			{
+				Entity? child = Children[i];
 				child.Create();
 			}
 		}
@@ -371,8 +391,10 @@ public void CallOnCollision(Collider other)
 		{
 			if (Destroyed)
 				return;
-			foreach (var component in components)
-				component.OnCollision(other);
+
+			var count = componentCount;
+			for (int i = 0; i < count; i++)
+				components[i].OnCollision(other);
 		}
 
 		private static Type? ByName(string name)
@@ -394,8 +416,10 @@ public void CallOnCollision(Collider other)
 
 		internal void CallStart()
 		{
-			foreach (var component in components)
+			var count = componentCount;
+			for (int i = 0; i < count; i++)
 			{
+				Component? component = components[i];
 				if (!component.started)
 				{
 					var dependencyAttribute = component.GetType().GetCustomAttribute<ComponentDependentOnAttribute>();
@@ -431,8 +455,9 @@ public Entity Clone()
 		{
 			var result = new Entity();
 			result.Id = Id + Guid.NewGuid().ToString();
-			foreach (var component in components)
+			for (int i = 0; i < components.Count; i++)
 			{
+				Component? component = components[i];
 				var c = Activator.CreateInstance(component.GetType(), result) as Component;
 				foreach (var prop in c.GetType().GetProperties())
 				{

Basalt/Common/Events/EventBus.cs

@@ -1,22 +1,21 @@
 using Basalt.Core.Common.Abstractions.Engine;
+using System.Collections.Concurrent;
 namespace Basalt.Common.Events
 {
 	/// <summary>
 	/// Represents an event bus that allows subscribing to and notifying observers of events.
 	/// </summary>
 	public class EventBus : IEventBus
 	{
-		private readonly List<IObserver> observers;
 		private readonly object lockObject;
 
 		// Game Events
-		private Dictionary<string, EventHandler> eventHandlers = new Dictionary<string, EventHandler>();
+		private ConcurrentDictionary<string, EventHandler> eventHandlers = new ConcurrentDictionary<string, EventHandler>();
 		/// <summary>
 		/// Initializes a new instance of the <see cref="EventBus"/> class.
 		/// </summary>
 		public EventBus()
 		{
-			observers = new List<IObserver>();
 			lockObject = new object();
 		}
 
@@ -30,7 +29,7 @@
 			{
 				if (!eventHandlers.ContainsKey(eventName))
 				{
 					eventHandlers[eventName] = null;
 				}
 				eventHandlers[eventName] += handler;
 			}

Basalt/Engine.cs

@@ -176,6 +176,7 @@ public static void CreateEntity(Entity entity)
 			Instance.Logger?.LogDebug($"Creating entity {entity.Id}...");
 			Instance.EntityManager.AddEntity(entity);
 			Instance.GetEngineComponent<IPhysicsEngine>()?.AddEntityToSimulation(entity);
+			entity.created = true;
 			entity.CallStart();
 		}
 

CHANGELOG.md

@@ -2,6 +2,15 @@
 
 All notable changes to this project will be documented in this file. See [versionize](https://github.com/versionize/versionize) for commit guidelines.
 
+<a name="1.9.1"></a>
+## [1.9.1](https://www.github.com/thiagomvas/Basalt/releases/tag/v1.9.1) (2024-06-18)
+
+### Bug Fixes
+
+* Adding components during some events would crash the engine ([c13a6cf](https://www.github.com/thiagomvas/Basalt/commit/c13a6cf34094cee8841c5e2cbace019422ca04f2))
+* Components are now initialized when added after entity creation ([7aab969](https://www.github.com/thiagomvas/Basalt/commit/7aab9696b8da0ddda0076eef0be87d29e28461ec))
+* Particle Lifetime and starting position now work as expected ([7d19af5](https://www.github.com/thiagomvas/Basalt/commit/7d19af5b30834bbce56df88c45e4697cf361e610))
+
 <a name="1.9.0"></a>
 ## [1.9.0](https://www.github.com/thiagomvas/Basalt/releases/tag/v1.9.0) (2024-06-18)