-onAdd/onRemove called when components are changed

tests/tests.d

@@ -94,6 +94,63 @@ static struct TestComp4
 	}
 }
 
+struct ChangeTestSystem
+{
+	mixin ECS.System!16;//__gshared ushort system_id;
+
+	void onCreate()
+	{
+		writeln("On Change Test System create.");
+	}
+
+	void onDestroy()
+	{
+		writeln("On Change Test System destroy.");
+	}
+
+	void onAdd(EntitiesData data)
+	{
+		foreach(i;0..data.length)
+		writeln("Entity added ID: ",data.entites[i].id.id);
+	}
+
+	void onRemove(EntitiesData data)
+	{
+		writeln("Entity removed ID: ",data.entites[0].id);
+	}
+
+	bool onBegin()
+	{
+		//writeln("On Test System begin.");
+		return true;
+	}
+
+	void onEnd()
+	{
+		//writeln("On Test System end.");
+	}
+
+	void initialize(ref Entity entity, ref TestComp comp)
+	{
+
+	}
+
+	static struct EntitiesData
+	{
+		size_t length;
+		const(Entity)[] entites;
+		TestComp4[] test4;
+	}
+
+	void update(EntitiesData data)
+	{
+		foreach(i;0..data.length)
+		{
+			
+		}
+	}
+}
+
 struct TestSystem
 {
 	mixin ECS.System!16;//__gshared ushort system_id;
@@ -344,6 +401,7 @@ int main()
 
 	gEM.registerSystem!TestSystemWithHighPriority(100,"fixed");
 	gEM.registerSystem!TestSystem(0);
+	gEM.registerSystem!ChangeTestSystem(0);
 	//gEM.registerSystem!TestSystemWithHighPriority(100);
 	//gEM.registerSystem!TestSystem2(0);
 	gEM.endRegister();
@@ -491,6 +549,7 @@ int main()
 
 	gEM.removeComponents!(TestComp)(entity.id);
 	gEM.addComponents(entity.id, TestComp());
+	gEM.removeComponents!(TestComp4)(entity.id);
 
 	gEM.begin();
 	gEM.update();
@@ -498,7 +557,6 @@ int main()
 	gEM.end();
 
 	writeEntityComponents(gEM.getEntity(entity.id));
-
 	//import std.stdio;
 	//writeln((cast(uint*)tmpl.info.first_block)[0..48]);
 	gEM.freeTemplate(tmpl);