UpdateInGroupのサンプル

ASystem.cs

using Unity.Entities;

[UpdateInGroup(typeof(MyGroup))]
[AlwaysUpdateSystem]
public class ASystem : ComponentSystem
{
    protected override void OnUpdate(){}
}

BSystem.cs

using Unity.Entities;

[UpdateInGroup(typeof(MyGroup))]
[UpdateAfter(typeof(ASystem))]
[AlwaysUpdateSystem]
public class BSystem : ComponentSystem
{
    protected override void OnUpdate(){}
}

CSystem.cs

using Unity.Entities;

[UpdateInGroup(typeof(MyGroup))]
[UpdateAfter(typeof(BSystem))]
[AlwaysUpdateSystem]
public class CSystem : ComponentSystem
{
    protected override void OnUpdate(){}
}

X1System.cs

using Unity.Entities;

[UpdateBefore(typeof(MyGroup))]
[AlwaysUpdateSystem]
public class X1System : ComponentSystem
{
    protected override void OnUpdate(){}
}

X2System.cs

using Unity.Entities;

[UpdateAfter(typeof(MyGroup))]
[AlwaysUpdateSystem]
public class X2System : ComponentSystem
{
    protected override void OnUpdate(){}
}