Different systems of the same entity get different LocalToWorld.Position

Unity Engine
, ,
1

First System

[BurstCompile]
public partial struct XXXXSystem : ISystem
{
    private EntityQuery _entityQuery;

    [BurstCompile]
    public void OnCreate(ref SystemState state)
    {
        _entityQuery = SystemAPI.QueryBuilder()
            .WithAll<LocalToWorld>().Build();
    }

    [BurstCompile]
    public void OnUpdate(ref SystemState state)
    {
        var physicsWorld = SystemAPI.GetSingleton<PhysicsWorldSingleton>();

        state.Dependency = new XXXXJob
        {
            PhysicsWorld = physicsWorld,
        }.Schedule(_entityQuery, state.Dependency);
    }

    [BurstCompile]
    private partial struct XXXXJob : IJobEntity
    {
        public PhysicsWorldSingleton PhysicsWorld;

        [BurstCompile]
        public void Execute(in LocalToWorld localToWorld, in Entity entity)
        {
            UnityEngine.Debug.Log($"{entity.Index} version {entity.Version} #######{localToWorld.Position}");
        }
    }
}

Second System

[BurstCompile]
public partial struct ZZZZSystem : ISystem
{
    private EntityQuery _entityQuery;
    [BurstCompile]
    public void OnCreate(ref SystemState state)
    {
        _entityQuery = SystemAPI.QueryBuilder().WithAllRW<LocalToWorld>()
            .Build();
    }

    //[BurstCompile]
    public void OnUpdate(ref SystemState state)
    {
        var dt = SystemAPI.Time.DeltaTime;
        state.Dependency = new ZZZZJob()
            .ScheduleParallel(_entityQuery, state.Dependency);
    }

    [BurstCompile]
    public partial struct ZZZZJob : IJobEntity
    {

        public void Execute(ref LocalToWorld localToWorld, in Entity entity)
        {
            UnityEngine.Debug.Log($"{entity.Index} version {entity.Version} ************{localToWorld.Position}");
        }
    }
}

Result

309 version 2 #######float3(5.27f, 1.682025f, -10.24f)

309 version 2 ************float3(5.27f, 1.57575f, -10.24f)

309 version 2 #######float3(5.27f, 1.57575f, -10.24f)

309 version 2 ************float3(5.27f, 1.518525f, -10.24f)

309 version 2 ************float3(5.270084f, 0.7530007f, -3.565054f)

309 version 2 #######float3(-1.003042f, 0.7530007f, -7.958806f)

309 version 2 ************float3(5.270084f, 0.7530007f, -3.565054f)

309 version 2 #######float3(-1.003042f, 0.7530007f, -7.958806f)

I will ask the entity to move for A while and then stop moving for a while. After the movement is stopped, LocalToWorld.position is still different, so it should not be the problem caused by the system order

2

Interesting.
So only difference between systems is the physics world property?
Is the position different at game start?
What is the result, if you don’t move entity?

3

I’m sorry I just got a reply

  • yes the only difference is physics world property.
  • The position at the beginning of the game is the same
  • The position is still the same if you don’t move it